TWI684419B - Zipper chain tooth row forming device - Google Patents

Abstract

The invention provides a fastener element row forming device, which can reduce the deviation of the shape of the upper leg of the coil element and improve the formability of the coil element. The upper leg forming part (60) of the fastener element forming device (10) has a rotating shaft (61) which is arranged approximately orthogonal to the mandrel (42); and a disc-shaped rotating hammer (62) , Which is arranged concentrically with the rotating shaft (61), and presses the monofilament (M) wound around the mandrel (42) to form a stepped portion (D), and the outer peripheral surface (63) of the rotating hammer (62) has: The first inclined peripheral surface (64), which is formed on one side in the axial direction, and necks toward one side in the axial direction; and the second inclined peripheral surface (65), which is formed on the other side in the axial direction, and faces The other side in the axial direction is constricted, and the stepped portion (D) is formed by the first inclined peripheral surface (64) of the rotary hammer (62).

Description

Zipper chain tooth row forming device

The present invention relates to a fastener element forming apparatus for forming fastener element rows of a slide fastener.

As a conventional fastener element row forming device, a device for continuously forming a coil element by winding a monofilament in a coil shape on a core rope via a rod-shaped mandrel extending in the front-rear direction is known. The element row forming device includes: a pair of screws arranged oppositely with the mandrel on both sides; an engaging head forming part arranged with the base end of the mandrel in the up-down direction; and arranged in the transfer direction This fastener element row forming device is used for forming a racket-type coil element at the upper leg forming part behind the engaging head forming part (for example, refer to Patent Document 1).

In addition, the upper leg portion forming part described in Patent Document 1 has a rotating shaft and a rotating weight provided at an end of the rotating shaft, and the rotating shaft is arranged substantially orthogonal to the mandrel. The rotary hammer is formed in a truncated cone shape, and the inclined peripheral surface presses the upper leg portion of the coil element to form a stepped portion on the upper leg portion. In addition, on the inclined peripheral surface of the rotary hammer, flat portions and circular arc surface portions bulging in an arc shape are alternately formed in the circumferential direction.

In addition, as other conventional fastener element forming apparatuses, an apparatus is known in which a part of the screw portion is cut at the end of one of a pair of screws and an upper leg is formed at the cut portion Part, forming a bean-type coil element (for example, refer to Comparative Document 2).

The upper leg portion forming portion described in Patent Document 2 has an eccentric convex portion integrally provided with the shaft portion of the screw, and the eccentric convex portion rotates in synchronization with the rotation of the screw, whereby the tip of the eccentric convex portion presses the upper portion of the coil element The legs are recessed in the upper legs. Prior Art Literature Patent Literature

[Patent Document 1] Japanese Patent Laid-Open No. 2000-94535 [Patent Document 2] Chinese Utility Model Registration No. 2637159

Problem to be Solved by the Invention However, in the fastener element row forming device described in Patent Document 1, the shape of the stepped portion formed on the upper leg portion of the coil element has a slight deviation, so the formability of the coil element There is room for improvement.

In addition, in the fastener element row forming apparatus described in the above Patent Document 2, the coil element is intermittently pressed by the eccentric convex portion. Therefore, if the pressing timing is missed, molding failure of the coil element may occur.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a fastener element row forming device capable of reducing the variation in the shape of the upper leg of a coil element and improving the formability of the coil element.

Solution to Problem The above object of the present invention is achieved by the following structure. (1) A fastener chain element forming apparatus that continuously shapes a coil-shaped fastener element line from a continuous synthetic resin monofilament, characterized by comprising: a mandrel extending in a rod shape; a pair of screws, It is arranged relative to each other via a mandrel, and maintains the monofilament wound around the mandrel in a coil shape and transfers it; the engaging head forming part forms the engaging head of the coil element on the monofilament wound around the mandrel And an upper leg forming portion, which forms the upper leg portion of the coil element on the monofilament wound around the mandrel, the upper leg forming portion has: a rotating shaft, which is arranged approximately orthogonal to the mandrel; and A disc-shaped rotating hammer is provided concentrically with the rotating shaft, and presses the monofilament wound around the mandrel to form a stepped portion or a depression. The outer peripheral surface of the rotating hammer has: a first inclined peripheral surface formed on the shaft One side, necking toward one side in the axial direction; and a second inclined peripheral surface, which is formed on the other side in the axial direction, and necking toward the other side in the axial direction, by the first inclination of the rotary hammer Steps or depressions are formed around the circumference. (2) The fastener element forming apparatus according to (1), wherein a plurality of recesses are formed at substantially equal intervals along the circumferential direction on the outer circumferential surface of the rotary hammer. (3) The fastener element forming apparatus according to (2), wherein the concave portion is formed in an arc shape. (4) The fastener element forming apparatus according to any one of (1) to (3), wherein the outer circumferential surface of the rotary hammer further has one of the first inclined circumferential surface and the second inclined circumferential surface A flat peripheral surface formed between and parallel to the axial direction of the rotating shaft.

Effect of the Invention According to the element row forming apparatus of the continuous element row forming apparatus for a slide fastener of the present invention, the upper leg forming section has: a rotating shaft that is arranged approximately orthogonal to the mandrel; and a disc-shaped rotating hammer, It is arranged concentrically with the rotating shaft and presses the monofilament wound around the mandrel to form a stepped portion or depression. The outer peripheral surface of the rotating hammer has: a first inclined peripheral surface formed on one side in the axial direction and facing One side in the axial direction is constricted; and the second inclined peripheral surface is formed on the other side in the axial direction and constricts toward the other side in the axial direction, and the stepped portion is formed by rotating the first inclined peripheral surface of the hammer Or, the shape of the upper leg portion of the coil element can be reduced, and the moldability of the coil element can be improved.

Hereinafter, each embodiment of the fastener element forming apparatus of the present invention will be described in detail based on the drawings. In addition, in the following description, the front side refers to the left side relative to the paper surface of FIG. 1, the rear side refers to the right side relative to the paper surface of FIG. 1, the upper side refers to the upper side relative to the paper surface of FIG. 1, and the lower side refers to the opposite side On the lower side of the paper surface in FIG. 1, the left side refers to the front side relative to the paper surface in FIG. 1, and the right side refers to the back side relative to the paper surface in FIG. 1. In addition, the rear side is the direction in which the formed fastener element row is discharged. In addition, the front-back direction is parallel to the axial direction when the monofilament is wound around the core rope in a coil shape. In addition, the front-rear, left-right directions are parallel to the horizontal plane, and the vertical directions are parallel to the vertical direction (gravity direction) orthogonal to the horizontal plane.

(First Embodiment) First, a first embodiment of a fastener element molding device of the present invention will be described with reference to FIGS. 1 to 7.

The fastener element forming apparatus 10 of this embodiment conveys both the continuous core rope S and the continuous synthetic resin monofilament M in a synchronized state, and winds the monofilament on the core rope S by using the mandrel 42 described later. M to continuously form a coil-shaped fastener element row.

In addition, the monofilament M is continuously wound around a spool 21 of the monofilament supply unit 20 described later that constitutes a part of the fastener element forming apparatus 10. The spool 21 is arranged on the front side of the fastener element forming apparatus 10, and the monofilament M is conveyed from the front side of the fastener element forming apparatus 10 toward the rear side. Moreover, the monofilament M and the core cord S of the winding part 30 which will be described later as a part of the fastener element forming apparatus 10 are introduced into the parts after the pair of screws 43 in a synchronized state, thereby forming a coil-like winding The coil element E wound on the core rope S is continuously discharged from the fastener element row forming device 10. In addition, the fastener element row is also called a continuous element row.

As shown in FIG. 1, the fastener element forming apparatus 10 includes a monofilament supply part 20 for supplying monofilaments M, and a monofilament M wound in a coil shape on a mandrel 42 while introducing the core cord S to the center of the device The winding part 30; and the element forming part 40 which forms the engagement head H and the upper leg La of the monofilament M wound on the mandrel 42 to form the coil element E.

The monofilament supply unit 20 includes: a cylindrical bobbin 21 in which the monofilament M is continuously wound and the axis is placed vertically on the table; and a flyer 22 is provided with the axis of the bobbin 21 The center of rotation is supported by the upper end of the spool 21 so that the rotation center rotates in the horizontal direction, and the monofilament M led from the spool 21 is guided to an extension of the axis of the spool 21; and a guide roller 23, which is disposed above the spool 21 , The direction of the monofilament M led out in the up-down direction is converted to the front-rear direction, and guided to the winding unit 30.

The winding unit 30 includes a square base 31 placed on the table, a hollow square frame 32 placed on and fixed to the base 31, and a pair of front and rear rotating bodies 33, each The monofilament guide holes 33a through which the wires M are inserted are respectively arranged at the front and rear wall portions of the frame 32; the pair of monofilament guide bodies 34 at the front and rear, which rotates integrally with the front and rear rotating bodies 33; the core rope tube 35, which is installed At the axis of the monofilament guide body 34 on the front side, the core rope S is continuously wound; the core rope lead-out body 36, which leads the core rope S led out from the core rope bobbin 35 to the rotating body 33 and the monofilament on the rear side The guide body 34 guides; and a guide post 37, which stands between the guide roller 23 of the monofilament supply part 20 and the frame 32 of the take-up part 30, and guides the monofilament M to the front rotating body 33.

The pair of rotating bodies 33 are rotationally driven in synchronization with each other by a driving source not shown. The upper end of the guide post 37 is provided with a monofilament guide hole 37a for guiding the monofilament M. In addition, on the facing outer peripheral edge portions of the individual filament guides 34, unillustrated filament guide holes communicating with the filament guide holes 33a of the rotating body 33 are respectively provided. Thereby, by rotating each of the rotating bodies 33 individually, the monofilament M is continuously wound around the element forming part 40 in a coil shape on the rear side of the device while being drawn out through the bobbin 21 of the monofilament supply part 20 on the front side of the device. Around the mandrel 42. In addition, the monofilament guide hole 37 a of the guide post 37 is formed substantially concentrically with the axis of the mandrel 42.

As shown in FIGS. 1 to 5, the element forming portion 40 includes: a conical mandrel holder 41 that is connected to and attached to the axis of the rotating body 33 on the rear side of the winding portion 30; and the mandrel 42 that It is held by the mandrel holder 41 and extends in a rod shape from the front end of the mandrel holder 41 toward the rear side; a pair of left and right screws 43, which are oppositely arranged in the left-right direction across the mandrel 42, are wound around The monofilament M of the mandrel 42 is maintained in a coil shape and transferred; it engages the head forming portion 50, which is disposed on the base end side of the mandrel 42 and forms the coil element E on the monofilament M wound around the mandrel 42 And the upper leg portion forming portion 60, which is disposed on the rear side of the engaging head portion forming portion 50, and forms the upper leg portion La of the coil element E on the monofilament M wound around the mandrel 42. In addition, the reference symbol Lb shown in FIG. 4 is a lower leg part. In addition, the rotating body 33 of the winding part 30, the pair of left and right screws 43, the meshing head forming part 50, and the upper leg forming part 60 are configured as the same drive source, and are rotationally driven in synchronization with each other.

As shown in FIG. 4, the mandrel 42 is formed with a rectangular cross-sectional core rope guide groove 42 a for guiding the core rope S along the longitudinal direction (front-rear direction) on one side of the mandrel 42. The mandrel 42 is formed to have a substantially U-shaped cross section shape. The core rope guide groove 42 a is formed along the longitudinal direction of the mandrel 42 from the base end portion thereof to the vicinity of the upper leg portion forming portion 60. In addition, the portion of the mandrel 42 after the upper leg portion 60 is formed into a substantially L-shaped cross section as shown in FIG. 5.

As shown in FIGS. 2 to 5, the screw 43 includes: a screw shaft 44 which is rotationally driven by a rotation drive source (not shown); and a cylindrical screw portion 45 which is provided concentrically with the screw shaft 44 integrally with The screw shaft 44 rotates synchronously. A screw groove 45 a is formed in a spiral shape on the outer peripheral surface of the screw portion 45.

In addition, as shown in FIG. 3, the right screw 43 extends forward in the front-rear direction compared to the left screw 43, and the left and right screws 43 are arranged offset in the front-rear direction. With this offset configuration, the entry space of the monofilament M is ensured. In addition, the right screw 43 is the upper screw in FIG. 3 and the left screw in FIG. 4, and the left screw 43 is the lower screw in FIG. 3 and the right screw in FIG. 4.

In addition, as shown in FIG. 2, a part of the screw portion 45 of the right screw 43 is notched in the front-rear direction so that the screw shaft 44 is left, and an upper leg portion forming portion 60 is arranged on the notched portion. As a result, the upper leg forming portion 60 is arranged without interference with the screw 43.

As shown in FIGS. 2 and 4, the engaging head forming portion 50 includes a die 51 disposed above the mandrel 42, an engaging head forming hammer 52 disposed below the mandrel 42, and forming the engaging head The drive shaft 58 of the hammer 52 is rotationally driven. In addition, the die 51 and the meshing head forming hammer 52 are arranged to have a holding space of the connecting portion J of the coil element E and a forming space of the meshing head H between the mandrel 42 and the mandrel 42.

The die 51 is supported by a support frame (not shown), and a portion of the monofilament M wound around the mandrel 42 that becomes the connecting portion J of the coil element E is sandwiched between the die 51 and the mandrel 42. In addition, the die 51 is configured to have sufficient rigidity to withstand the pressing force from the meshing head forming hammer 52 when the meshing head H of the coil element E is formed.

As shown in FIG. 4, the meshing head forming hammer 52 has a cylindrical rotating shaft 53 whose axis is parallel to the left-right direction and arranged approximately orthogonal to the mandrel 42 and a disc-shaped pressing roller 54 which It is provided concentrically with the rotating shaft 53 and presses the monofilament M wound around the mandrel 42. In addition, the meshing head forming hammer 52 is arranged to face the die 51 via the mandrel 42.

As shown in FIGS. 2 and 5, the upper leg forming portion 60 has a rotating shaft 61 that is arranged approximately orthogonal to the mandrel 42, and a disc-shaped rotating hammer 62 that is connected to the front end of the rotating shaft 61 They are provided concentrically and integrally, and the monofilament M wound around the mandrel 42 is pressed to form a stepped portion D on the upper leg La of the coil element E. In addition, the upper leg forming portion 60 is arranged on the right side of the mandrel 42.

As shown in FIG. 5, the rotation axis 61 of the upper leg forming portion 60 is inclined with respect to the horizontal plane and is arranged approximately orthogonal to the mandrel 42. In other words, the rotation axis 61 of the upper leg portion forming portion 60 is parallel to the plane defined by the up-down direction and the left-right direction, and is arranged to cross the up-down direction and the left-right direction. In addition, the upper leg forming portion 60 of this embodiment is suitable for forming a racket-type coil element. In addition, the racket-type coil element is a coil element in which a step portion D is formed on the upper leg La.

As shown in FIGS. 5 and 6, the outer circumferential surface 63 of the rotary hammer 62 has a first inclined circumferential surface 64 formed on the axial front end side (one side) of the rotary shaft 61 and necking toward the axial front end side; The second inclined circumferential surface 65 is formed on the axial base end side (the other side) of the rotating shaft 61 and is necked toward the axial base end side; and the flat circumferential surface 66 is disposed on the first inclined circumferential surface 64 The second inclined peripheral surface 65 is formed parallel to the axial direction of the rotating shaft 61. In addition, the flat peripheral surface 66 may not be provided.

In addition, as shown in FIG. 5, the axial dimension (thickness) of the first inclined peripheral surface 64 is set larger than the axial dimension of the second inclined peripheral surface 65, and the area of the first inclined peripheral surface 64 is larger than the second inclined peripheral surface 65. .

In addition, as shown in FIGS. 5 to 7, on the outer peripheral surface 63 of the rotary weight 62, a plurality of recesses 67 are formed at substantially equal intervals along the circumferential direction. The concave portion 67 is formed across both the first and second inclined peripheral surfaces 64 and 65 with the flat peripheral surface 66 of the outer peripheral surface 63 as the center. In addition, the concave portion 67 is formed in an arc shape when viewed in the axial direction. In addition, a plurality of recesses 67 may not be formed.

In the fastener element forming apparatus 10 configured in this manner, the pair of left and right screws 43 are rotationally driven by a drive source (not shown), whereby the rotating body 33 of the winding unit 30 and the engaging head forming unit 50 are engaged The head shaping hammer 52 and the rotary hammer 62 of the upper leg shaping portion 60 are synchronously driven to rotate at high speed. With these rotations, the filament M led upward from the bobbin 21 of the filament supplying unit 20 changes its direction to the rear side via the guide roller 23. Then, the monofilament M is inserted into the monofilament guide holes 33a of the pair of front and rear rotating bodies 33 and wound around the mandrel 42 extending rearward.

Then, the monofilament M wound around the mandrel 42 is formed into a coil shape at predetermined pitch intervals by the rotation of the pair of left and right screws 43 and is transferred to the rear side. During this transfer process, the monofilament M is restricted to a spiral shape in the screw groove 45a, the pitch of the coil is gradually increased, and the coil elements E are arranged at a predetermined pitch between the predetermined transfer distances.

After that, the monofilament M formed into a coil shape first reaches the engaging head forming portion 50, is pressed by the outer peripheral surface of the pressing roller 54 of the engaging head forming hammer 52 of the engaging head forming portion 50, and is formed for each coil element E Out of engagement head H.

Next, the coil-shaped monofilament M in which the head H is formed is further transported to the rear side by the pair of left and right screws 43 and reaches the upper leg forming portion 60. At this time, the upper leg portion La of each coil element E is pressed by the rotary hammer 62 of the upper leg portion forming portion 60 to form a stepped portion D in the upper leg portion La. The step D of the upper leg La is formed by the first inclined peripheral surface 64 of the rotary weight 62. Therefore, the variation in the shape of the upper leg La of the coil element E can be reduced, and the formability of the coil element E can be improved.

As described above, according to the fastener element forming apparatus 10 of the present embodiment, the outer peripheral surface 63 of the rotary hammer 62 of the upper leg forming portion 60 has the first inclined peripheral surface 64 and the second inclined peripheral surface 65, and is rotated by Since the first inclined peripheral surface 64 of the weight 62 forms the stepped portion D in the upper leg La, the variation in the shape of the upper leg La of the coil element E can be reduced, and the formability of the coil element E can be improved. Therefore, since the shape of each coil element E can be uniformly formed, the slidability of the slider of the finally produced slide fastener can be improved.

Further, according to the fastener element forming apparatus 10 of the present embodiment, the outer peripheral surface 63 of the rotary hammer 62 is formed with a plurality of recesses 67 at substantially equal intervals along the circumferential direction, so that the upper side of the coil element E can be further reduced The deviation of the shape of the leg La.

In addition, according to the fastener element forming apparatus 10 of the present embodiment, since the concave portion 67 formed on the outer peripheral surface 63 of the rotary hammer 62 is formed in an arc shape, the variation in the shape of the upper leg La of the coil element E can be further reduced .

(Second Embodiment) Next, a second embodiment of the fastener element forming apparatus of the present invention will be described with reference to FIGS. 8 to 10. In addition, for the same or equivalent parts as those in the first embodiment described above, the same or equivalent reference signs are attached to the drawings, and the description thereof is omitted or simplified.

In this embodiment, instead of the upper leg forming portion 60 of the first embodiment described above, the upper leg forming portion 70 shown in FIGS. 8 and 9 is used. As shown in FIGS. 8 and 9, the upper leg forming portion 70 has a rotating shaft 71 and a disc-shaped rotating weight 72 like the upper leg forming portion 60 of the first embodiment described above. In addition, the upper leg molding portion 70 of the present embodiment is suitable for molding a bean-shaped coil element. In addition, the bean-shaped coil element is a coil element with a recess R formed in the upper leg La.

As shown in FIGS. 9 and 10, the outer circumferential surface 73 of the rotary hammer 72 has a first inclined circumferential surface 74 which is formed on the axial front end side (one side) of the rotary shaft 71 and narrows toward the axial front end side; The second inclined circumferential surface 75 is formed on the axial base end side (the other side) of the rotating shaft 71 and is necked toward the axial base end side; and the flat circumferential surface 76 is disposed on the first inclined circumferential surface 74 Between the second inclined peripheral surface 75, it is formed parallel to the axial direction of the rotating shaft 71. In addition, the flat peripheral surface 76 may not be provided.

In addition, as shown in FIG. 9, the axial dimension (thickness) of the first inclined peripheral surface 74 is set to be substantially the same as the axial dimension of the second inclined peripheral surface 65, and the first inclined peripheral surface 64 and the second inclined peripheral surface 65 The area is about the same. In addition, the outer peripheral surface 73 of the rotary hammer 72 may be provided with a plurality of recesses similar to the first embodiment described above.

Furthermore, in the present embodiment, the upper leg La of each coil element E is pressed by the rotary hammer 72 of the upper leg shaping portion 70 to form a recess R in the upper leg La. Furthermore, the recess R of the upper leg La is formed by the first inclined peripheral surface 74 of the rotary weight 72. Therefore, the variation in the shape of the upper leg La of the coil element E can be reduced, and the formability of the coil element E can be improved.

As described above, according to the fastener element forming apparatus 10 of the present embodiment, the outer peripheral surface 73 of the rotary hammer 72 of the upper leg forming portion 70 has the first inclined peripheral surface 74 and the second inclined peripheral surface 75, and is rotated by Since the first inclined peripheral surface 74 of the hammer 72 forms a recess R in the upper leg La, it is possible to reduce the variation in the shape of the upper leg La of the coil element E and improve the formability of the coil element E. Therefore, since the shape of each coil element E can be uniformly formed, the slidability of the slider of the finally produced slide fastener can be improved. The other structure, function, and effect are the same as in the first embodiment described above.

In addition, the present invention is not limited to the structures exemplified in the above-mentioned embodiments, and can be appropriately changed without departing from the gist of the present invention. For example, in the above-mentioned embodiments, the driving source of the rotating body of the winding part, the pair of left and right screws, the meshing head forming part, and the upper leg forming part are the same, but it is not limited to this, and may be independent Set the drive source.

10‧‧‧ Zipper chain element forming device 20‧‧‧ Monofilament supply part 21‧‧‧ Bobbin 22‧‧‧spindle wings 23‧‧‧Guide roller 30‧‧‧Thread winding part 31‧‧‧‧Abutment 32‧ ‧‧Frame 33‧‧‧Rotary body 33a‧‧‧Single wire guide hole 34‧‧‧Single wire guide body 35‧‧‧Core rope tube 36‧‧‧Core rope lead body 37‧‧‧Guide pillar 37a‧‧ ‧Single thread guide hole 40‧‧‧Element forming part 41‧‧‧Spindle holder 42‧‧‧Spindle 42a‧‧‧Core rope guide groove 43‧‧‧Screw 44‧‧‧Screw shaft 45‧‧‧ Screw part 45a ‧‧‧ Screw groove 50 ‧‧‧ Engagement head forming part 51 ‧ ‧ ‧ Die 52 ‧ ‧ ‧ Engagement head forming hammer 53 ‧ ‧ ‧ Rotary shaft 54 ‧ ‧ ‧ Roller 58 ‧ ‧ ‧ Drive shaft 60 ‧‧‧Upper leg forming part 61‧‧‧Rotating shaft 62‧‧‧Rotating hammer 63‧‧‧‧Peripheral surface 64‧‧‧‧1st inclined circumferential surface 65‧‧‧2nd inclined circumferential surface 66‧‧‧flat circumference Face 67‧‧‧Concave part 70‧‧‧ Upper leg forming part 71‧‧‧Rotating shaft 72‧‧‧Rotating hammer 73‧‧‧Outer peripheral surface 74‧‧‧First inclined peripheral surface 75‧‧‧ Second inclined periphery Surface 76‧‧‧ Flat peripheral surface D‧‧‧ Step difference E‧‧‧ Coil element H‧‧‧ Engagement head J‧‧‧ Connection part La‧‧‧Upper leg Lb‧‧‧Lower leg M ‧‧‧Single wire R‧‧‧Sag S‧‧‧Core rope

FIG. 1 is a schematic configuration diagram illustrating a first embodiment of a fastener element forming apparatus of the present invention. Fig. 2 is a schematic side view illustrating the element forming portion shown in Fig. 1. Fig. 3 is a plan view illustrating the operation of the pair of screws shown in Fig. 1. 4 is a cross-sectional view illustrating the operation of the meshing head forming portion shown in FIG. 1. FIG. 5 is a cross-sectional view illustrating the operation of the rotary hammer of the upper leg forming portion shown in FIG. 1. 6 is a perspective view illustrating the rotary hammer shown in FIG. 5. 7 is an enlarged perspective view of a main part illustrating the outer peripheral surface of the rotary hammer shown in FIG. 6. 8 is a perspective view of a rotary hammer that describes a second embodiment of the fastener element forming apparatus of the present invention. 9 is an enlarged side view illustrating the main part of the rotary hammer shown in FIG. 8. FIG. 10 is a cross-sectional view illustrating the operation of the rotary hammer of the upper leg forming portion shown in FIG. 8.

10‧‧‧Zipper chain forming device

20‧‧‧Monofilament supply department

21‧‧‧spool

22‧‧‧Ingot wings

23‧‧‧Guide roller

30‧‧‧Reeling Department

31‧‧‧Abutment

32‧‧‧Frame

33‧‧‧rotating body

33a‧‧‧Monofilament guide hole

34‧‧‧Monofilament guide

35‧‧‧core rope bobbin

36‧‧‧Core rope lead-out

37‧‧‧Guiding pillar

37a‧‧‧Monofilament guide hole

40‧‧‧Chain forming section

41‧‧‧Spindle holder

42‧‧‧mandrel

43‧‧‧screw

50‧‧‧ Engagement head forming part

60‧‧‧Upper leg shaping section

M‧‧‧monofilament

Claims (6)

A fastener element row forming device (10) for continuously forming a coil-shaped fastener element row from a continuous monofilament (M) made of synthetic resin, characterized by comprising: a mandrel (42), which is rod-shaped Extended; a pair of screws (43), which are arranged opposite each other across the mandrel (42), maintain the monofilament (M) wound on the mandrel (42) in a coil shape and transfer; mesh A head forming part (50) which forms the engaging head (H) of the coil element (E) on the monofilament (M) wound around the mandrel (42); and an upper leg forming part (60) forming the upper leg (La) of the coil element (E) on the monofilament (M) wound around the mandrel (42), the upper leg forming part (La) 60) It has a rotating shaft (61) which is arranged approximately orthogonal to the mandrel (42); and a stepped portion (La) is formed on the upper leg (La) of the coil element (E) D); and a disc-shaped rotating hammer (62), which is arranged concentrically with the rotating shaft (61), and presses the monofilament (M) wound around the mandrel (42) to form The stepped portion (D), the outer peripheral surface (63) of the rotary hammer (62) has: a first inclined peripheral surface (64) formed on one side in the axial direction and constricted toward one side in the axial direction ; And a second inclined circumferential surface (65), which is formed on the other side of the axial direction, and necks toward the other side of the axial direction; the circumferential surface (66), is disposed on the first inclined circumferential surface (64) Between the second inclined peripheral surface (65), the stepped portion (D) is formed by the first inclined peripheral surface (64) of the rotary hammer (62). 66) A plurality of recesses (67) are formed at intervals along the circumferential direction, The concave portion (67) is formed from the peripheral surface (66) across both the first inclined peripheral surface (64) and the second inclined peripheral surface (65). The fastener chain element forming device (10) according to item 1 of the patent application range, wherein the outer peripheral surface (63) of the rotary hammer (62) is formed at substantially equal intervals along the circumferential direction Said multiple recesses (67). The fastener element forming apparatus (10) according to item 2 of the patent application scope, wherein the concave portion (67) is formed in an arc shape. The fastener chain element forming device (10) according to any one of the first to third patent application ranges, wherein the peripheral surface (66) is formed parallel to the axial direction of the rotating shaft (61) And flat. A fastener element row forming device (10) for continuously forming a coil-shaped fastener element row from a continuous monofilament (M) made of synthetic resin, characterized by comprising: a mandrel (42), which is rod-shaped Extended; a pair of screws (43), which are arranged opposite each other across the mandrel (42), maintain the monofilament (M) wound on the mandrel (42) in a coil shape and transfer; mesh A head forming part (50) which forms the engaging head (H) of the coil element (E) on the monofilament (M) wound around the mandrel (42); and an upper leg forming part (70) forming the upper leg portion (La) of the coil element (E) on the monofilament (M) wound around the mandrel (42), the upper leg portion forming portion (La) 70) having: a rotating shaft (71) that is arranged approximately orthogonal to the mandrel (42); and the upper leg portion of the coil element (E) (La) a depression (R) is formed; and a disc-shaped rotary hammer (72), which is provided concentrically with the rotary shaft (71), and presses the single piece wound around the mandrel (42) Wire (M) to form the recess (R), the outer peripheral surface (73) of the rotary hammer (72) has: a first inclined peripheral surface (74), which is formed on one side of the axial direction and faces the axial direction One side of the neck is constricted; and a second inclined peripheral surface (75) formed on the other side in the axial direction and necked toward the other side in the axial direction; the peripheral surface (76) is disposed on the first inclined Between the peripheral surface (74) and the second inclined peripheral surface (75), the recess (R) is formed by the first inclined peripheral surface (74) of the rotary hammer (72). The fastener element row forming device (10) according to item 5 of the patent application range, wherein the peripheral surface (76) is formed parallel to the axial direction of the rotating shaft (71) and flat.

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