Apparatus and method for treating plastic preforms with integrated preform feed

Abstract

Apparatus (1) for treating plastic preforms (10) with a preform sorting device (2) comprising a sorting device (3) and a damming device (5) which transports the plastic preforms (10) along a first rectilinear transport path (T1), wherein the sorting device (3) is suitable and intended to bring the plastic preforms (10) into a predetermined orientation and the damming device (5) is suitable and intended to feed the plastic preforms (10) in an ordered manner to a heating device (12) arranged downstream of the preform sorting device (2), which heats the plastic preforms (10) to a temperature necessary for blow moulding, wherein the heating device (12) transports the plastic preforms (10) along a substantially second rectilinear transport path (T2) and a plurality of stationary arranged heating elements (14) are arranged along the second rectilinear transport path (T2). According to the invention, the preforms sorting device (2) and the heating device (12) are arranged on a common carrier (9).

Claims

1. Apparatus (1) for treating plastic preforms (10) with a preform sorting device (2) comprising a sorting device (3) and a damming device (5) which transports the plastic preforms (10) along a first rectilinear transport path (T1), wherein the sorting device (3) is suitable and intended to bring the plastic preforms (10) into a predetermined orientation and the damming device (5) is suitable and intended to feed the plastic preforms (10) in an ordered manner to a heating device (12) arranged downstream of the preform sorting device (2), which heats the plastic preforms (10) to a temperature necessary for blow moulding, wherein the heating device (12) transports the plastic preforms (10) along a substantially second rectilinear transport path (T2) and a plurality of heating elements (14) arranged in a stationary manner are arranged along the second rectilinear transport path (T2), characterised in that the preform sorting device (2) and the heating device (12) are arranged on a common carrier (9).

2. Apparatus (1) according to claim 1, characterised in that the plastic preforms (10) are fed from the preform sorting device (2) to the heating device (12) and in particular to a transport star (16) arranged between the preform sorting device (2) and the heating device (12) in a horizontal direction (h).

3. Apparatus (1) according to claim 1, characterised in that in the sorting device (3) and/or the damming device (5) at least one air stressing device is provided, which is suitable and intended to transport the plastic preforms (10) by means of an air flow.

4. Apparatus (1) according to claim 1, characterised in that the damming device (5) has two driven circumferential conveyor belts (30) which are arranged parallel to each other and which are suitable and intended for transporting the plastic preforms (10).

5. Apparatus (1) according to claim 1, characterised in that the damming device (5) has two rotatable rollers (7) arranged parallel to each other, which are suitable and intended for transporting the plastic preforms (10).

6. Apparatus (1) according to claim 1, characterised in that both the damming device (5) and the sorting device (3) have two rotatable rollers (6, 7) arranged parallel to one another, which are suitable and intended for transporting the plastic preforms (10), the rollers (6) of the sorting device (3) and the rollers (7) of the damming device (5) being directly adjacent to one another.

7. Apparatus (1) according to claim 1, characterised in that the preform sorting device (2) and the heating device (12) are arranged in a common housing (8).

8. Apparatus (1) according to claim 1, characterised in that downstream of the heating device (12), a blow moulding machine (20) is arranged which converts the plastic preforms (10) into plastic containers after heating in the heating device (12).

9. Apparatus (1) for treating plastic preforms (10) with a preform sorting device (2) comprising a sorting device (3) and a damming device (5) which transport the plastic preforms (10) along a first rectilinear transport path (T1), wherein the sorting device (3) is suitable and intended to bring the plastic preforms (10) into a predetermined orientation and the damming device (5) is suitable and intended to feed the plastic preforms (10) in an ordered manner to a heating device (12) arranged downstream of the preform sorting device (2), which heats the plastic preforms (10) to a temperature necessary for blow moulding, wherein the heating device (12) transports the plastic preforms (10) along a substantially rectilinear straight transport path (T2) and a plurality of heating elements (14) arranged in a stationary manner are arranged along the second rectilinear transport path (T2), characterised in that the preform sorting device (2) and the heating device (12) are arranged parallel to each other.

10. Apparatus (1) according to claim 9, characterised in that the plastic preforms (10) are fed from the preform sorting device (2) to the heating device (12) and in particular to a transport star (16) arranged between the preform sorting device (2) and the heating device (12) in a horizontal direction (h).

11. Apparatus (1) according to claim 9, characterised in that in the sorting device (3) and/or the damming device (5) at least one air stressing device is provided, which is suitable and intended to transport the plastic preforms (10) by means of an air flow.

12. Apparatus (1) according to claim 9, characterised in that the damming device (5) has two driven circumferential conveyor belts (30) which are arranged parallel to each other and which are suitable and intended for transporting the plastic preforms (10).

13. Apparatus (1) according to claim 9, characterised in that the damming device (5) has two rotatable rollers (7) arranged parallel to each other, which are suitable and intended for transporting the plastic preforms (10).

14. Apparatus (1) according to claim 9, characterised in that both the damming device (5) and the sorting device (3) have two rotatable rollers (6, 7) arranged parallel to one another, which are suitable and intended for transporting the plastic preforms (10), the rollers (6) of the sorting device (3) and the rollers (7) of the damming device (5) being directly adjacent to one another.

15. Apparatus (1) according to claim 9, characterised in that the preform sorting device (2) and the heating device (12) are arranged in a common housing (8).

16. Apparatus (1) according to claim 9, characterised in that downstream of the heating device (12), a blow moulding machine (20) is arranged which converts the plastic preforms (10) into plastic containers after heating in the heating device (12).

17. A method for treating plastic preforms (10) with a preform sorting device (2) comprising a sorting device (3) and a damming device (5) which transport the plastic preforms (10) in each case along a first rectilinear transport path (T1), wherein the sorting device (3) is suitable and intended to bring the plastic preforms (10) into a predetermined orientation and the damming device (5) is suitable and intended to feed the plastic preforms (10) in an ordered manner to a heating device (12) arranged downstream of the preform sorting device (2), which heats the plastic preforms (10) to a temperature necessary for blow moulding, wherein the heating device (12) transports the plastic preforms (10) along a substantially second rectilinear transport path (T2) and a plurality of heating elements (14) arranged in a stationary manner are arranged along the second rectilinear transport path (T2), characterised in that the preform sorting device (2) and the heating device (12) are arranged on a common carrier (9).

Description

(1) Further advantages and embodiments are shown in the attached drawings.

(2) In the drawings:

(3) FIG. 1 shows a representation according to the invention of a device for treating plastic preforms;

(4) FIG. 2 shows a plan view of a damming device according to the invention; and

(5) FIG. 3 a side view of a damming device according to the invention.

(6) FIG. 1 shows a representation according to the invention of a device 1 for treating plastic preforms 10. The plastic preforms 10 are fed to the preform sorting device 2 via an insertion star 17 and here first brought into a predetermined orientation in the sorting device 3 and then brought into a predetermined pitch in the damming section 5 and fed to the following heating device 12 via the transport star 16. In this exemplary embodiment, both the sorting device 3 and the damming device 5 each have two parallel rollers 6, 7 between which the plastic preforms are transported.

(7) It can be seen that the first transport section T1 of the preform sorting device 2 and the second transport section T2 of heating device 12 are arranged parallel to each other and run along a horizontal direction h. The heating device 12 has a circumferential transport means 13 which is guided over at least two deflection points 15. A plurality of heating elements 14 for heating the plastic preforms 10 are arranged along the transport section T2 of the heating device 12. The reference signs 8 and 9 schematically identify the common housing (reference signs 8) within which the preform sorting device 2 and the heating device 12 are arranged or the common carrier (reference sign 9) on which the preform sorting device 2 and the heating device 12 are arranged.

(8) The reference sign 18 indicates an infeed stop, which is located at the end of the transport section of the damming device 5 and can block the infeed or the transfer of the plastic preforms to the transport star 16 if required or if necessary.

(9) The reference sign 20 indicates a blow moulding machine in which the plastic preforms 10 are formed into plastic containers after heating. The blow moulding machine 20 has a plurality of blow moulding devices 25 (only two shown here), which are arranged along a rotating carrier. The plastic preforms 10 are fed to the blow moulding machine 20 via a feeding starwheel 21 and discharged from the blow moulding machine 20 as moulded containers via a discharge starwheel 22. The blow-moulding machine 20 is preferably arranged inside a housing 28, wherein this housing 28 preferably forms a clean room. The housing 28 is therefore preferably designed to separate the blow moulding machine 20 from a non-sterile environment.

(10) FIGS. 2 and 3 show a top view and a side view of the damming device 5. In contrast to the embodiment according to FIG. 1, the damming device 5 here has two parallel and spaced conveyor belts 30, between which the plastic preforms 10 are transported and guided. The conveyor belts 30 are guided by a deflection roller 32 and a drive roller 33. The reference sign D in FIG. 2 indicates the direction of rotation of the deflection roller 32 and the drive roller 33.

(11) In particular in the illustration according to FIG. 3 it can be seen that the conveyor belts 30 are arranged in such a way that a basic body 10a of the plastic preforms 10 can pass between the belts, but not the mouth area 10c or the support ring 10b of the plastic preform. The reference sign h again indicates the horizontal direction along which the plastic preforms 10 are transported.

(12) The applicant reserves the right to claim all features disclosed in the application documents as being essentially inventive, provided that they are, individually or in combination, new compared to the prior art. It is further pointed out that the individual figures also describe features which may be advantageous in themselves. The skilled person recognises immediately that a certain feature described in a figure can be advantageous even without adopting further features from this figure. Furthermore, the skilled person recognises that advantages may also result from a combination of several features shown in individual or different figures.

LIST OF REFERENCE SIGNS

(13) 1 device 2 preform sorting device 3 sorting device 5 damming device 6 roller 7 roller 8 housing 9 carrier 10 plastic preforms 10a basic body 10b support ring 10c mouth area 12 heating device 13 transport means 14 heating elements 15 deflection point 16 transport star 17 insertion star 18 inlet stop 20 blow moulding machine 21 feeding starwheel 22 discharge starwheel 25 blow moulding device 28 housing 30 conveyor belt 32 deflection roller 33 drive roller T1 first rectilinear transport path T2 second rectilinear transport path h horizontal direction D direction of rotation