Abstract
The purpose of the invention is to provide a method and an applicator for the continuous sequential separate application of two or more viscous materials or fluids, whereby two or more adhesives can be applied continuously in one operation in a track or line in turn or alternately or sequentially and thus different adhesives can be applied in turn without intervals as a continuous track or line or as a ring thereof.
A method for the continuous sequential application of two or more viscous materials or fluids, whereby control of the respective volume flows of the viscous materials or fluids is carried out so that the respective viscous materials or fluids are applied in turn.
Applicator for the continuous sequential application of two or more viscous materials or fluids, whereby two or more feed channels arranged adjacently in the longitudinal direction as a feed unit extending in a longitudinal direction are provided for separately guiding the viscous materials or fluids, wherein the feed channels each comprise a material outlet or fluid outlet at one axial end and the feed channels comprise a material inlet or fluid inlet in the area of the end opposite to the material outlet or fluid outlet in the longitudinal direction.
Claims
1. A method for the continuous sequential application of two or more viscous materials or fluids, whereby control of the respective volume flows of the viscous materials or fluids is carried out so that the respective viscous materials or fluids are applied in turn.
2. Procedure according to claim 1, characterized in that the application is carried out in a continuous or spaced manner without intervals.
3. Procedure according to claim 1, characterized in that an overlapping or superimposition of the respective previous material or fluid and the respective subsequent material or fluid takes place.
4. Procedure according to claim 1, characterized in that the application of the two or more viscous materials or fluids is carried out by means of an applicator, a valve (16) at the respective material inlet (4) or fluid inlet (4) and/or a valve (16) at the respective material outlet (3) or fluid outlet (3) being controlled for the respective volume flow.
5. Procedure according to claim 1, characterized in that the control of the respective volume flows takes place abruptly or with overlaps or proportionally.
6. Applicator for the continuous sequential application of two or more viscous materials or fluids, whereby two or more feed channels (2) arranged adjacently in the longitudinal direction as a feed unit (1) extending in a longitudinal direction are provided for separately guiding the viscous materials or fluids, wherein the feed channels (2) each comprise a material outlet (3) or fluid outlet (3) at one axial end and the feed channels (2) comprise a material inlet (4) or fluid inlet (4) in the area of the end opposite to the material outlet (3) or fluid outlet (3) in the longitudinal direction.
7. The applicator according to claim 6, characterized in that the material outlets (3) or fluid outlets (3) open into or are guided to a nozzle (15) or into a junction (5) with a nozzle (15) or merge into the junction (5).
8. The applicator according to claim 6, characterized in that the feed channels (2) have a circular ring-shaped, circular cut-out-shaped or circular segment-shaped cross-section or a round and/or angular cross-section.
9. The applicator according to claim 6, characterized in that the feed unit (1) comprises concentrically arranged needles (6), pipes (6), or tubes (6), profiles (6) or hollow profiles (6) which are radially spaced apart from one another, and the inner spaces of and/or the spaces between the spaced needles (6), pipes (6) or tubes (6), profiles (6), or hollow profiles (6) form the feed channels (2).
10. The applicator according to claim 6, characterized in that the feed unit (1) is a needle (6), a pipe (6), a tube (6), or a hollow profile (6), whereby two or more feed channels (2) are formed by at least one longitudinally extending partition (10) lying inside the needle (6), the pipe (6), the tube (6), or the hollow profile (6).
11. The applicator according to claim 6, characterized in that the feed unit (1) comprises individual pipes (6), tubes (6), or hoses (6) lying next to one another, the respective pipes (6), tubes (6), or hoses (6) forming the feed channels (2).
12. The applicator according to claim 6, characterized in that the feed unit (1) and/or the feed channels (2) are longitudinally movable and/or that the respective material outlet (3) is longitudinally displaceable.
13. The applicator according to claim 6, characterized in that at least one of the concentrically arranged needles (6) or tubes (6), profiles (6) or hollow profiles (6) radially spaced apart from each other is movable in the longitudinal direction.
14. The applicator according to claim 6, characterized in that the material outlet (3) of the respective feed channel (2) comprises or forms a valve (16) and/or comprises a cross-sectional taper.
15. The applicator according to claim 6, characterized in that the respective material outlet (3) forms a valve (16) between two needles (6) or tubes (6), profiles (6) or hollow profiles (6), which are arranged concentrically in a movable manner in the longitudinal direction and are radially spaced apart from one another.
16. The applicator according to claim 6, characterized in that the respective material outlets (3) of the respective feed channels (2) lie in one plane or in different planes in relation to one another with respect to the longitudinal direction, whereby the respective plane are oriented orthogonally or obliquely or at an angle to the longitudinal direction.
17. The applicator according to claim 6, characterized in that the ends of the needles (6) or tubes (6), profiles (6) or hollow profiles (6) arranged concentrically in each case on the inside and radially spaced apart from one another and pointing towards the material outlet (3) project axially beyond the ends of the needles (6) or tubes (6), profiles (6) or hollow profiles (6) arranged concentrically therewith in each case on the outside and radially spaced apart from one another.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
[0062] Several examples of the invention are shown in the drawings and are described in more detail below. The following is shown:
[0063] FIGS. 1 to 4 a sectional view of an applicator with three nested tubes or needles in different positions,
[0064] FIG. 5 a sectional view of an applicator with an inner tube or needle arranged in a tubular shaft as an outer tube, the respective material outlet of which is arranged in one plane,
[0065] FIG. 6 a sectional view of an applicator with an inner tube or needle arranged in a tubular shaft as an outer tube, the respective material outlet of which is arranged in a plane inclined to the longitudinal extension of the needles or tubes,
[0066] FIG. 7 a sectional view of an applicator according to FIG. 5, wherein the inner tube or needle is longer and protrudes from the outer needle or tube and the respective outlets are located in different planes,
[0067] FIG. 8 a sectional view of an applicator according to FIG. 6, wherein the inner tube or needle is longer and protrudes from the outer needle or tube and the respective outlets are located in different planes,
[0068] FIG. 9 a sectional view of an applicator according to FIG. 5, wherein the inner tube or needle is beveled and is longer and protrudes from the outer needle or tube and the inner tube or needle protrudes into a junction with a nozzle,
[0069] FIG. 10 a sectional view of an applicator according to FIG. 5, wherein the inner tube or needle is longer and protrudes from the outer needle or tube, and the respective outlets lie in different planes, and the inner tube or needle is guided into a junction with a nozzle up to its axial end,
[0070] FIG. 11 a sectional view of an applicator with a feed unit extending in a longitudinal direction with two tubes or needles as the middle and inner tubes or needles nested or arranged in a tubular shaft as the outer tube, whereby valves are formed in the area of the material outlet between the inner and middle tubes or needles or between the middle and outer tubes or needles and the material outlets are arranged in different planes.
[0071] FIG. 12 a sectional view of an applicator according to FIG. 11, whereby the outer tube or needle is extended through a junction with a nozzle and the inner and middle tubes or needles are guided to the end of the junction,
[0072] FIG. 13 a sectional view of an applicator with two tubes or needles as the middle and inner tubes or needles nested or arranged in a tubular shaft as the outer tube, the material outlet of which at the lower axial end respectively forms a valve and in the upper axial end of the tubes or needles opposite the material outlet or in the upper area thereof the material feed and the connections for a drive are provided,
[0073] FIG. 14 two sectional views in the longitudinal and cross-sectional view of an applicator, wherein the feed channels are formed by four pipes or hoses lying next to each other as a feed unit extending in a longitudinal direction,
[0074] FIG. 15 a schematic representation of an applicator, wherein the feed channels are formed by three pipes or hoses lying next to one another as the feed unit extending in a longitudinal direction,
[0075] FIG. 16 a schematic representation of an applicator, wherein the feed channels are formed by two pipes or hoses lying next to one another as the feed unit extending in a longitudinal direction,
[0076] FIGS. 17 to 19 a schematic representation of an applicator, wherein the feed channels are formed by dividing walls within a pipe or a tube as a feed unit extending in a longitudinal direction, and
[0077] FIG. 20 a schematic representation of an applicator, wherein the material inlet to a concentric arrangement of the feed channels via feed grooved disc, feed grooves and feed disc is realized.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0078] The applicator according to the invention for continuous sequential application of two or more viscous materials or fluids comprises a feed unit 1 extending in a longitudinal direction with two or more feed channels 2 arranged adjacently in the longitudinal direction for separate guidance of the viscous materials or fluids. The feed channels 2 each comprise a material outlet 3 or fluid outlet 3 at one axial end. In the area of the end opposite to the material outlet 3 or fluid outlet 3 in the longitudinal direction, the feed channels 2 comprise a material inlet 4 or fluid inlet 4.
[0079] FIGS. 1 to 4 show a sectional view of an applicator with three round tubes 6 or needles 6 concentrically nested within each other, at the lower end of which the material outlet 3 is present. Between the inner tube 6, 7 or needle 6, 7 and the middle tube 6, 8 or needle 6, 8 or between the middle tube 6, 8 or needle 6, 8, and the outer tube 6, 9 or needle 6, 9 there is a space which forms the respective feed channel 2. The tubes 6 or needles 6 are shaped in the area of the material outlet 3 in such a way that valves 16 are formed in the area of the material outlet 3 between the inner tube 6, 7 or needle 6, 7 and middle tube 6, 8 or needle 6, 8 or between the middle tube 6, 8 or needle 6, 8 and outer tube 6, 9 or needle 6, 9.
[0080] The middle tube 6, 8 or needle 6, 8 and outer tube 6, 9 or needle 6, 9 each have a flange-shaped or stepped-shaped cross-sectional taper directed towards the axis of symmetry at the material outlet 3. The inner tube 6, 7 or needle 6, 7 as a full tube or needle has a stepped or stepped cross-sectional taper. The outer area or the outer end of the middle tube 6, 8 or needle 6, 8 can be moved against the respective inner area or the inner end at the material outlet 3 of the outer tube 6, 9 or needle 6, 9 and the stepped cross-sectional taper on the inner tube 6, 7 or needle 6, 7 can be moved to the respective inner area or the inner end at the material outlet 3 of the middle tube 6, 8 or needle 6, 8 and can stop or abut there, thus forming a valve 16 with which the respective material outlet 3 can be closed or opened and thus the material feed is controlled.
[0081] Accordingly, in FIG. 1 the valve 16 formed between the inner tube 6, 7 or needle 6, 7 and the middle tube 6, 8 or needle 6, 8 is closed, and the valve 16 between the middle tube 6, 8 or needle 6, 8, and the outer tube 6, 9 or needle 6, 9 is open, since, for example, the inner tube 6, 7 or needle 6, 7 and the middle tube 6, 8 or needle 6, 8 have been moved upwards together and equally.
[0082] FIG. 2 represents the valves 16 formed being open between the inner tube 6, 7 or needle 6, 7 and the middle tube 6, 8 or needle 6, 8 or between the middle tube 6, 8 or needle 6, 8, and the outer tube 6, 9 or needle 6, 9 as, for example, the inner tube 6, 7 or needle 6, 7 and the middle tube 6, 8 or needle 6, 8 having been moved upwards together independently, whereby the inner tube 6, 7 or needle 6, 7 have traveled a longer distance.
[0083] FIG. 3 represents the valves 16 formed being closed between the inner tube 6, 7 or needle 6, 7 and the middle tube 6, 8 or needle 6, 8 resp. between the middle tube 6, 8 or needle 6, 8, and the outer tube 6, 9 or needle 6, 9 as, for example, the stepped cross-sectional taper on the inner tube 6, 7 or needle 6, 7 is adjacent to the respective inner area or inner end at the material outlet 3 of the middle tube 6, 8 or needle 6, 8 and the outer area or end of the middle tube 6, 8 or needle 6, 8 having been moved to and is in contact with the respective inner area or end at the material outlet 3 of the outer tube 6, 9 or needle 6, 9.
[0084] FIG. 4 represents the valve 16 formed between the inner tube 6, 7 or needle 6, 7 and the middle tube 6, 8 or needle 6, 8 being open and the valve 16 between the middle tube 6, 8 or needle 6, 8, and the outer tube 6, 9 or needle 6, 9 being closed as, for example, the inner tube 6, 7 or needle 6, 7 has been moved upwards.
[0085] Thus, for example, by means of an applicator, exemplarily shown in FIGS. 1 to 4, the method according to the invention can be carried out, whereby control of the respective volume flows of the viscous materials or fluids takes place, so that the respective viscous materials or fluids are applied in turn and thus the application can take place continuously or spaced apart and also an overlapping or superimposition of the respective preceding material or fluid and the respective following material or fluid is possible, wherein a valve 16 at the respective material inlet 4 or fluid inlet 4 and/or a valve 16 at the respective material outlet 3 or fluid outlet 3 is controlled for the respective volume flow. The control of the respective volume flows can be carried out abruptly or with overlapping or proportionally.
[0086] A further applicator according to the invention is shown in FIG. 5 as a sectional view. A feed unit 1 extending in a longitudinal direction has a tubular shaft as an outer tube 6, 9 with an inner tube 6, 7 or needle 6, 7 arranged therein. The material outlet 3 is present at the respective lower axial end of the inner tube 6, 7 or needle 6, 7 and the outer tube 6, 9 or needle 6, 9. In the inner tube 6, 7 or needle 6, 7, there is an inner space, and between the inner tube 6, 7 or needle 6, 7 and the outer tube 6, 9 or needle 6, 9 there is a space forming the respective feed channel 2. The material outlets 3 of the inner tube 6, 7 or needle 6, 7 and the outer tube 6, 9 or needle 6, 9 lie in a plane which is designed at right angles to the longitudinal extension of the feed unit. In the upper axial end of the inner tube 6, 7 or needle 6, 7 and the outer tube 6, 9 or needle 6, 9 opposite to the material outlet 3 or in the upper area thereof, the material feed 4 and the connections for a drive are provided.
[0087] The design of a further applicator according to the invention in FIG. 6 corresponds essentially to the applicator in FIG. 5, whereby, in deviation from FIG. 5, the material outlets 3 of the inner tube 6, 7 or needle 6, 7 and the outer tube 6, 9 or needle 6, 9 lie in one plane, but the plane is designed or aligned obliquely or at an angle to the longitudinal extension of the feed unit 1.
[0088] The models shown in FIGS. 5 and 6 allow the inner tube 6, 7 or needle 6, 7 to be moved axially upwards so that the material outlet 3 of the inner tube 6, 7 or needle 6, 7 can be moved into a deviating plane in the outer tube 6, 9 or needle 6, 9.
[0089] The design of a further applicator according to the invention in FIG. 7 corresponds essentially to the applicator in FIG. 5, whereby, in contrast to FIG. 5, the inner tube 6, 7 or needle 6, 7 is longer and projects from the outer needle 6, 9 or tube 6, 9 and thus the respective material outlets 3 lie in different planes.
[0090] The variants of a further applicator according to the invention in FIG. 8 corresponds essentially to the applicator in FIG. 6, whereby, in deviation from FIG. 5, the material outlets 3 of the inner tube 6, 7 or needle 6, 7 and of the outer tube 6, 9 or needle 6, 9 do not lie in one plane and the respective planes of the material outlets 3 are, however, constructed or aligned obliquely or at an angle to the longitudinal extension of the feed unit 1.
[0091] The variants shown in FIGS. 7 and 8 allow an axial movement of the inner tube 6, 7 or needle 6, 7 upwards so that the material outlet 3 of the inner tube 6, 7 or needle 6, 7 can be moved into a further deviating or the same plane of the material outlet 3 of the outer tube 6, 9 or needle 6, 9.
[0092] The design of a further applicator according to the invention in FIG. 9 corresponds essentially to the applicator in FIG. 5, whereby, in contrast to FIG. 5, the inner tube 6, 7 or needle 6, 7 is longer and projects from the outer needle 6, 9 or tube 6, 9 and thus the respective material outlets 3 lie in different planes. In addition, the material outlet 3 of the inner tube 6, 7 or needle 6, 7 is beveled. There is junction 5 with a nozzle 15 at the feed unit 1 or at the material outlet 3 of the outer tube 6, 9 or needle 6, 9. The inner tube 6, 7 or needle 6, 7 projects into junction 5 with nozzle 15 without reaching nozzle 15.
[0093] The design of a further applicator according to the invention in FIG. 10 corresponds essentially to the applicator in FIG. 5, whereby, in contrast to FIG. 5, the inner tube 6, 7 or needle 6, 7 is longer and projects from the outer needle 6, 9 or tube 6, 9 and thus the respective material outlets 3 lie in different planes. There is junction 5 with a nozzle 15 at the feed unit 1 or at the material outlet 3 of the outer tube 6, 9 or needle 6, 9. The inner tube 6, 7 or needle 6, 7 projects into junction 5 with nozzle 15 and extends to nozzle 15. The nozzle 25 and the material outlet 3 lie approximately in one plane.
[0094] A variant of a further applicator according to the invention is shown in FIG. 11. A sectional view shows the applicator with a feed unit 1 extending in a longitudinal direction with two tubes 6 or needles 6 coaxially nested or arranged in a tubular shaft as outer tube 6, 9 as middle tube 6, 8 or needle 6, 8 and inner tube 6, 7 or needle 6, 7, wherein the inner tube 6, 7 or needle 6, 7 is designed as a full material, at the lower axial end of which the material outlet 3 is present. Between the inner tube 6, 7 or needle 6, 7 and the middle tube 6, 8 or needle 6, 8 or between the middle tube 6, 8 or needle 6, 8 and outer tube 6, 9 or needle 6, 9 there is in each case a space forming the respective feed channel 2. The respective tubes 6 or needles 6 are shaped in the area of the material outlet 3, as compared to FIGS. 1 to 4, in such a way that in the area of the material outlet 3 between the inner tube 6, 7 or needle 6, 7 and the middle tube 6, 8 or needle 6, 8 or between the middle tube 6, 8 or needle 6, 8 and [0095] the outer tube 6, 8 or needle 6, 9 there is an area forming the respective feed channel 2. The inner tube 6, 7 or needle 6, 7 and the middle tube 6, 8 or needle 6, 8 are longer than the outer tube 6, 9 or needle 6, 9 and project axially from it. The inner tube 6, 7 or needle 6, 7 is movable within the middle tube 6, 8 or needle 6, 8 and the middle tube 6, 8 or needle 6, 8 is movable within the outer tube 6, 9 or needle 6, 9 and form respective valves 16 at the material outlets 3 of the respective feed channels 2. The area of the middle tube 6, 8 or needle 6, 8 being inside the outer tube 6, 9 or needle 6, 9 has a larger outer diameter than the area outside the outer tube 6, 9 or needle 6, 9 to form the valve 16. The outer diameter decreases abruptly in the area of the material outlet 3 of the feed channel 2 between the outer tube 6, 9 or needle 6, 9 and the middle tube 6, 8 or needle 6, 8 to form the valve 16 as a stepped or tiered cross-sectional taper. In the upper axial end of the tubes 6 or needles 6 opposite to the material outlet 3, or in the upper area thereof, the material feed 4 and the connections for a drive are provided.
[0096] The variant of a further applicator according to the invention in FIG. 12 corresponds essentially to the applicator in FIG. 11, whereby, deviating from FIG. 11, junction 5 with a nozzle 15 is present in the area of or at the material outlet 3 of the feed channel 2 between the outer tube 6, 9 or needle 6, 9 and the middle tube 6, 8 or needle 6, 8, whereby the inner tube 6, 7 or needle 6, 7 and the middle tube 6, 8 or needle 6, 8 are guided through junction 5 with nozzle 15 or extend to nozzle 15. The material outlet 3 of the feed channel 2 between the inner tube 6, 7 or needle 6, 7 and the middle tube 6, 8 or needle 6, 8 lies approximately in the plane of nozzle 15.
[0097] The variant of a further applicator according to the invention in FIG. 13 shows a sectional view of an applicator with a feed unit 1 extending in a longitudinal direction with two tubes 6 or needles 6, 9 coaxially nested or arranged in a tubular shaft as the outer tube 6, 9 arranged coaxially in a tubular shaft as outer tube 6, 9 as a middle tube 6, 8 or needle 6, 8 and inner tube 6, 7 or needle 6, 7, whereby the inner tube 6, 7 or needle 6, 7 is designed as a full material, at the lower axial end of which the material outlet 3 is present. Between the inner tube 6, 7 or needle 6, 7 and the middle tube 6, 8 or needle 6, 8 or between the middle tube 6, 8 or needle 6, 8 and outer tube 6, 9 or needle 6, 9 there is in each case a space forming the respective feed channel 2. The respective tubes 6 or needles 6 are shaped in the area of the material outlet 3, as compared to FIGS. 1 to 4, in such a way that valves 16 are formed in the area of the material outlet 3 between the inner tube 6, 7 or needle 6, 7 and the middle tube 6, 8 or needle 6, 8 or between the middle tube 6, 8 or needle 6, 8 and outer tube 6, 9 or needle 6, 9. Axially aside from the material outlet 3, the feed unit 1 is axially extended at the outer tube 6, 9 or the needle 6, 9. At this extension, junction 5 with a nozzle 15 is arranged. In the upper axial end of the tubes 6 or needles 6 opposite to the material outlet, or in their upper area, the material feed 4 and the connections for a drive are provided. In the upper axial end of the tubes 6 or needles 6 opposite to the material outlet 3, or in the upper area thereof, the material feed 4 and the connections for a drive are provided.
[0098] The variant of a further applicator according to the invention in FIG. 14 shows two longitudinal and cross-sectional views of an applicator, wherein the feed channels 2 as a feed unit 1 extending in a longitudinal direction are formed by four pipes 6 or hoses 6 lying next to one another, which are additionally surrounded by a pipe section 11, wherein the axial ends of the feed channels 2 for the material outlets 3 lie within the pipe section 33 and the lower end of the pipe section forms a further or common material outlet 12.
[0099] The variant of a further applicator according to the invention in FIG. 15 shows a schematic representation of an applicator, wherein the feed channels 2 as a feed unit 1 extending in a longitudinal direction are formed by three pipes 6 or hoses 6 lying next to one another, which are additionally surrounded by a pipe section 11.
[0100] The variant of a further applicator according to the invention in FIG. 16 shows a schematic representation of an applicator, wherein the feed channels 2 as a feed unit 1 extending in a longitudinal direction are formed by two pipes 6 or hoses 6 lying next to one another, which are surrounded in areas by a fixing 11.
[0101] The variant of a further applicator according to the invention in FIGS. 17 to 19 shows a schematic representation or a sectional view of an applicator, wherein the feed channels 2 as a feed unit 1 extending in a longitudinal direction are formed by partition walls 10 within a pipe 6 or a tube 6. Accordingly, for example, the pipe 6 or the tube 6 can be divided into two, three or four feed channels 2, whereby the partition walls 10 are suitably provided and arranged. At this, distribution or arrangement of the partition walls and the feed channels 2 deviating from the distribution or arrangement of the partition walls 10, which are uniform in cross-section, are also possible.
[0102] The variant of a further applicator according to the invention in FIG. 20 shows a schematic representation of an applicator, in which the material inlet 4 to a concentric arrangement of the feed channels 2 of the feed unit 1 is realized via a feed grooved disk 13 with feed grooves 17 with feed-through channels 18 and feed disk 14 distributed therein and axially penetrating the feed groove disk 13. The advantage here is that in the event of a rotational movement or change in the direction of the feed unit 1, which may occur during an application, in particular, in the case of radii to be applied, the material inlet 4 does not have to perform this rotational movement as well, since the material inlet 4 is arranged on a feed disc 14 which is not necessarily rotatable and a feed groove disc 13 with rotationally symmetrical feed grooves 17 and the feed-through channels 18 distributed therein and axially penetrated the feed grooved disc 13 is rotatably arranged on the feed disc 14. The respective material inlets 4 are arranged on different radii starting from the center of the rotationally symmetrical feed disc 14. Corresponding to these radii, the rotationally symmetrical feed grooves 17 are arranged on or in the rotationally symmetrical feed grooved disk 13. The feed-through channels 18 distributed in the feed grooves 17 and axially penetrated the feed grooved disk 13, open into the concentrically arranged feed channels 2 of the feed unit 1, which can thus be rotated independently of the material inlets 4.
LIST OF REFERENCE NUMERALS
[0103] 1—feed unit
[0104] 2—feed channel
[0105] 3—material outlet, fluid outlet, outlet
[0106] 4—material inlet, fluid inlet
[0107] 5—junction
[0108] 6—needle, pipe, tube, profile, hollow profile, hose
[0109] 7—inner needle, inner tube
[0110] 8—middle needle, middle tube
[0111] 9—outer needle, outer tube
[0112] 10—partition wall
[0113] 11—pipe section, fixing
[0114] 12—further, common material outlet
[0115] 13—feed grooved disc, feed groove
[0116] 14—feed disc
[0117] 15—nozzle
[0118] 16—valve
[0119] 17—feed groove
[0120] 18—feed-through channel
