Apparatus for applying studs

Abstract

An apparatus for applying studs on strips of material includes a lower plate having a plurality of upward-protruding pins, an intermediate plate intended to be disposed on the lower plate and having a plurality of through housings suitable for receiving the body of the studs and letting the pins of the lower plate pass through, and an upper plate with housings to cooperate with the attaching means of the studs. The pins of the lower plate have a head made of a soft material intended to stop against the body of the studs, in such manner not to damage the body of the studs, when the studs are pressed between the pins of the lower plate and the housings of the upper plate.

Claims

1. An apparatus for applying studs on a strip of material, each of the studs having a body and an attachment element adapted to perforating the strip and attaching to the strip, the apparatus comprising: a lower plate having a plurality of upwardly-protruding pins, each pin of said plurality of upwardly-protruding pins being a steel body; an intermediate plate disposed on said lower plate, said intermediate plate having a plurality of housings adapted to receive the body of the studs such that the attachment element are directed upwardly, the plurality of housings being through-holes for passage of the plurality of upwardly-protruding pins of said lower plate; an upper plate having housings disposed in registration with the plurality of housings of said intermediate plate and adapted to cooperate with the attachment element of the studs so as to attach the studs on the strip when the studs are compressed between the plurality of upwardly-protruding pins of said lower plate and the housings of said upper plate, wherein the plurality of upwardly-protruding pins of said lower plate comprises a head formed of a plastic material and adapted to touch the body of the studs, said upper plate and said lower plate being attached together via a bracket and a hinge in which said upper plate is fixed to a lid and said intermediate plate is disposed on a top of said lower plate, the lid being closeable so as to compress said lower plate and said intermediate plate and said upper plate together; and a plurality of springs in spaced relationship and interposed between said lower plate and said intermediate plate, said plurality of springs affixed to at least one of said lower plate and said intermediate plate, said plurality of springs bearing against at least one of said lower plate and intermediate plate, wherein the shank has at least one collar that protrudes radially from the shank so as to define undercut portions to which the head is attached.

2. The apparatus of claim 1, where the plastic material is injection molded plastic material.

3. The apparatus of claim 1, wherein the body of each pin of said plurality of upwardly-protruding pins of said lower plate is a shank that protrudes axially upwardly.

4. The apparatus of claim 1, wherein the head has a recessed seat adapted to be coupled to the body of the stud.

5. The apparatus of claim 4, wherein the recessed seat has a shape selected from the group consisting of a sphere, a cone, and a pyramid.

6. The apparatus of claim 1, further comprising: a base receiving said lower plate and said upper plate.

7. An apparatus for applying studs on a strip of material, each of the studs having a body and an attachment element suitable for perforating the strip and attaching to the strip, the apparatus comprising: a lower plate having a plurality of upwardly-protruding pins; an intermediate plate disposed on said lower plate, said intermediate plate having a plurality of housings adapted to receive the body of the studs such that the attachment element are directed upwardly, the plurality of housings being through-holes for passage of the plurality of upwardly-protruding pins of said lower plate; and an upper plate having housings disposed in registration with the plurality of housings of said intermediate plate and adapted to cooperate with the attachment element of the studs so as to attach the studs on the strip when the studs are compressed between the plurality of upwardly-protruding pins of said lower plate and the housings of said upper plate, wherein the plurality of upwardly-protruding pins of said lower plate comprises a head formed of an injection molded plastic material and adapted to touch the body of the studs, said upper plate and said lower plate being attached together via a bracket and a hinge in which said upper plate is fixed to a lid and said intermediate plate is disposed on a top of said lower plate, the lid being closeable so as to compress said lower plate and said intermediate plate and said upper plate together; and a plurality of springs in spaced relationship and interposed between said lower plate and said intermediate plate, said plurality of springs affixed to at least one of said lower plate and said intermediate plate, said plurality of springs bearing against at least one of said lower plate and intermediate plate, wherein the body of each pin of said plurality of upwardly-protruding pins of said lower plate is a shank that protrudes axially upwardly, the shank have at least one collar that protrudes radially from the shank so as to define undercut portions to which the head is attached.

8. The apparatus of claim 7, wherein each pin of said plurality of upwardly-protruding pins of said lower plate is a steel body.

9. The apparatus of claim 7, wherein the head has a recessed seat adapted to be coupled to the body of the stud, the recessed seat having a shape selected from the group consisting of a sphere, a cone, and a pyramid.

10. The apparatus of claim 7, further comprising: a spring interposed between said lower plate and said intermediate plate.

11. The apparatus of claim 7, further comprising: a base receiving said lower plate and said upper plate.

12. An apparatus for applying studs on a strip of material, each of the studs having a body and an attachment element suitable for perforating the strip and attaching to the strip, the apparatus comprising: a lower plate having a plurality of upwardly-protruding pins, wherein a body of each pin of said plurality of upwardly-protruding pins is a shank that protrudes axially upwardly; an intermediate plate disposed on said lower plate, said intermediate plate having a plurality of housings adapted to receive the body of the studs such that the attachment element are directed upwardly, the plurality of housings being through-holes for passage of the plurality of upwardly-protruding pins of said lower plate; an upper plate having housings disposed in registration with the plurality of housings of said intermediate plate and adapted to cooperate with the attachment element of the studs so as to attach the studs on the strip when the studs are compressed between the plurality of upwardly-protruding pins of said lower plate and the housings of said upper plate, wherein the plurality of upwardly-protruding pins of said lower plate comprises a head formed of a plastic material and adapted to touch the body of the studs, said upper plate and said lower plate being attached together via a bracket and a hinge in which said upper plate is fixed to a lid and said intermediate plate is disposed on a top of said lower plate, the lid being closeable sous to compress said lower plate and said intermediate plate and said upper plate together; and a plurality of springs in spaced relationship and interposed between said lower plate and said intermediate plate, said plurality of springs affixed to at least one of said lower plate and said intermediate plate, said plurality of springs bearing against at least one of said lower plate and intermediate plate, wherein the shank has at least one collar that protrudes radially from the shank so as to define undercut portions to which the head is attached.

13. The apparatus of claim 12, wherein each pin of said plurality of upwardly-protruding pins of said lower plate is a steel body.

14. The apparatus of claim 12, wherein the head has a recessed seat adapted to be coupled to the body of the stud, the recessed seat having a shape selected from the group consisting of a sphere, a cone, and a pyramid.

15. The apparatus of claim 12, further comprising: a base receiving said lower plate and said upper plate.

Description

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

(1) Further characteristics of the invention will appear from the following description with reference to a merely illustrative, not limiting embodiment, illustrated by way of example in the attached figures, wherein:

(2) FIG. 1 is an exploded perspective view of the apparatus for applying studs according to the invention;

(3) FIG. 2 is an axial sectional view of a pin of the apparatus of FIG. 1;

(4) FIG. 3 is a perspective view of a stud;

(5) FIG. 4 is a view of the stud of FIG. 3 in overturned position;

(6) FIG. 5 is a sectional view taken along the vertical sectional plane of the apparatus of FIG. 1 when the mold is closed;

(7) FIG. 6 is the same view as FIG. 5, after closing the mold and applying the stud on a strip.

DETAILED DESCRIPTION OF THE INVENTION

(8) With reference to the Figures, the apparatus according to the invention is disclosed, which is generally indicated with reference numeral (1). The apparatus (1) is used to apply studs (9) (see FIGS. 3 and 4) on a strip (S) (see FIGS. 5 and 6) of different types of materials.

(9) With reference to FIG. 1, the apparatus comprises a base (2) and a lid (3) intended to be pressed onto the base (2). The base and the lid (2, 3) act as die holder plates to receive different types of dies according to the shape and the arrangement of the studs (9) to be applied.

(10) The lid (3) comprises at least one bracket (30) revolvingly connected to the base (2) by means of a hinge (4). In view of the above, by revolving around the axis of the hinge (4), the lid (3) can be pressed under pressure against the base (2).

(11) The lid (3) has a handle (31) in distal position with respect to the hinge (4) in order to be grabbed by a user to actuate the apparatus (1).

(12) Although the attached figures show a manually actuated apparatus wherein base and lid (2, 3) are mutually hinged in order to be opened and closed, the apparatus (1) can be actuated mechanically by means of any type of electric, magnetic, pneumatic or hydraulic actuator. Moreover, instead of being hinged to the base, the lid (3) can be mounted in a traditional vertical or horizontal press.

(13) The apparatus (1) comprises a lower plate (5) intended to be disposed on the base (2). The lower plate (5) comprises a plurality of upward-protruding pins (6). Each pin (60) comprises a head (64) intended to come in contact with the stud (9). The head (64) of the pin is made of a soft material, such as for example plastics, in order not to damage the stud (9) when the head (64) of the pin comes in contact with the stud.

(14) The term “soft material” indicates a material with lower hardness and higher deformability than steel, that is to say a material suitable for adjusting to any surface defects of the coating of the stud (9) that comes in contact with the head (64) of the pin of the lower plate.

(15) The head (64) of the pin of the lower plate is preferably made of plastic material, such as ABS (ACRYLONITRILE BUTADIENE STYRENE). Although it is not shown in the figures, the entire pin (6) of the lower plate can be made of a soft, yet sufficiently rigid material, for example hard plastics, such as ABS.

(16) With reference to FIG. 2, the pin (6) comprises a substantially cylindrical body (60) made of steel and fixed to the lower plate (5). The body (60) of the pin has a shank (61) that protrudes upwards axially. The shank (61) has a lower diameter than the body. The shank (61) is provided with a plurality of collars (62) that protrude radially from the shank in such manner to define undercut portions (63) that act as attachment for the head (64) of the pin.

(17) The head (64) of the pin has a cylindrical shape, with the same diameter as the body (60). The head (64) of the pin has a recessed seat (65) shaped according to the shape of the stud (9), which can be hemispherical, conical, pyramidal and the like.

(18) The head (64) of the pin is fixed to the body (60) of the pin by means of injection molding. The pin (6) is inserted in a cavity of a mold wherein plastic material that forms the head (64) is injected. Evidently, the head (64) can be made as a separate piece from the body (60) of the pin and can be fixed to the body (60) of the pin with other systems, such as for example fit-in coupling, welding, gluing and the like.

(19) The apparatus (1) comprises an intermediate plate (7) intended to be disposed on the lower plate (5). The intermediate plate (70) has a plurality of housings (70) intended to receive the studs (9). The housings (70) of the intermediate plate are through holes. The housings (70) of the intermediate plate are in register with the pins (6) of the lower plate in such manner that the pins (6) can pass through the housings (70). The housings (70) are disposed according to specific patterns that can have different shapes and sizes.

(20) With reference to FIGS. 3 and 4, the studs (9) have a body (90) that can have different shapes, such as hemispherical, conical, pyramidal with square or triangular base, etc. The body (90) of the studs can be coated with surface painting.

(21) The housings (70) of the intermediate plate can have an upper portion with complementary shape and size with the respect to the body (90) of the stud. Therefore the housings (70) of the intermediate plate can have different shapes and sizes to receive studs with different shapes and sizes. For example, the housings (70) of the intermediate plate can have a tapered shape with decreasing dimensions going downwards, in such manner to simplify the insertion of the body (90) of the studs.

(22) The stud (9) has attaching means (91), defined as claws. The attaching means (91) comprise a plurality of bendable feet (92) provided with a tip (93) intended to perforate the strip (S) (see FIGS. 5 and 6) whereon the studs (6) are to be applied. Alternatively, the attaching means (91) of the studs can be fit-in couplings, such as riveting systems.

(23) Going back to FIG. 1, spring means (50) are disposed between the lower plate (5) and the intermediate plate (7), in such way to keep the intermediate plate spaced from the lower plate. When the spring means (50) are unloaded, the head (64) of the pins of the lower plate is situated under the housings (70) of the intermediate plate.

(24) The apparatus (1) comprises an upper plate (8) intended to be fixed to the lid (3). The upper plate (8) comprises a plurality of recessed housings (80) disposed in register with the housings (70) of the intermediate plate. The recessed housings (80) of the upper plate have a perfectly rounded concave shape, like a segment of a sphere, to cooperate with the bendable feet (92) of the studs.

(25) If the attaching means (61) of the studs are riveting systems, the upper plate (8) is provided with housings (80) intended to receive rivets that are coupled with the pins of the studs.

(26) This description continues by illustrating the operation of the apparatus (1).

(27) With reference to FIGS. 1 and 5, a plurality of studs (9) is disposed and distributed on the intermediate plate (7) in such manner that the body (90) of the studs is housed in the housings (70) of the intermediate plate (7) and the attaching means (91) of the studs are directed upwards. If the housings (70) are larger than the studs, the body (90) of the studs is stopped against the head (64) of the pins of the lower plate, in such manner that the studs cannot come out of the intermediate plate.

(28) A strip (S) is disposed on the intermediate plate, above the attaching means (91) of the studs.

(29) As shown in FIG. 6, the apparatus is closed, i.e. the lid (3) pushes the upper plate (8) on the intermediate plate (7), in such a way to lower the intermediate plate (7) towards the lower plate (5), compressing the spring means (50). Consequently, the pins (6) pass through the housings (70) of the intermediate plate and the head (64) of the pins (6) holds the body (90) of the studs, holding the studs in position and preventing the studs from being lowered together to the intermediate plate (7).

(30) Considering that the strip (S) is pushed downwards by the upper plate (8), the tips (93) of the feet of the attaching means of the studs perforate the strip (S). Therefore the recessed housings (80) of the upper plate push the feet (92) of the studs downwards, which are bent behind the strip (S) in order to fix the strip (6) firmly.

(31) Considering that the head (64) of the pins of the lower plate is made of a soft material, when the head (64) of the pins of the lower plate is stopped against the body (90) of the studs, the body of the studs is not damaged and in particular the coating is not scratched if the studs are painted.

(32) Numerous variations and modifications can be made to the present embodiment of the invention, within the reach of experts of the field, while still falling within the scope of the invention as claimed in the attached claims.