JPH08280419A - Apparatus for production of curved slide fastener - Google Patents

Abstract

PURPOSE: To make it possible to continuously and efficiently produce curved slide fasteners and to improve accuracy at the time of producing the curved slide fasteners from a continuous fastener chain. CONSTITUTION: This apparatus has a curvilinearly working section 2 in a traveling path 1 which linearly feeds the continuous fastener chain F. The apparatus is provided with a feeding-in means 3 for inserting the continuous fastener chain F from upstream into this curvilinear working section 2 and a transverse feeding means 4 for guiding the continuous fastener chain F in the moving direction as the continuous fastener chain F is curved in the curvilinearly working section 2 and moves transversely from the traveling path 1 on the downstream side of the curvilinearly working section 2. The apparatus is equipped with a positioning means 5 for setting the curvilinear working position of the continuous fastener chain F and a push feeding means 6 for delivering the curvilinearly worked part to downstream along the traveling path 1 from the curvilinearly working section 2 on the upstream side of the curvilinearly working section 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a curved slide fastener manufacturing apparatus for manufacturing a curved slide fastener to be attached to, for example, an upright or curved bag of pants from a long continuous fastener chain.

[0002]

2. Description of the Related Art In order to manufacture a curved slide fastener, as described in JP-A-59-103607, the pitch of the left and right meshing element rows of the curved portion is changed, or the actual method is used. As described in Japanese Patent Laid-Open No. 53-28572, there is a case where a linear continuous fastener chain cut into a predetermined length is sandwiched between upper and lower molds, and when the upper and lower molds are manufactured, the lower mold is continuously connected. A curved holding groove into which the meshing element of the fastener chain fits is provided, and the meshing element of the continuous fastener chain cut to a prescribed length is fitted into the holding groove, and the upper mold is placed over it to hold the pressed state. The hot air is applied from a small through-hole provided in the lower mold to heat it, and then cold air is injected to set it in a bent state.

[0003]

The operation of fitting the meshing element in the holding groove in the above-mentioned manufacturing means using the upper and lower dies is manual, and it takes time and effort to fit the meshing element into the curved portion of the holding groove, resulting in a high manufacturing efficiency. Is limited,
There was a problem that it could not meet a large amount of demand. On the other hand, in the case of manufacturing by changing the pitch of the left and right element rows described above, it is necessary to change the pitch depending on the degree of bending, but it is also different depending on the material of the fastener tape and the weaving structure, and the pitch is calculated. Since it depends on experience value, it required a skilled technique to finish it into a predetermined curve.

In view of the above problems, according to the present invention, it is possible to easily and surely finish an existing straight continuous fastener chain into a curved slide fastener having a required degree of curvature, and to reliably hold the curved state. It is to provide a manufacturing apparatus capable of

[0005]

The solution of the present invention is a curved groove in which a meshing element of a continuous fastener chain is provided in either a lower die or an upper die in a traveling path for linearly feeding the continuous fastener chain. A bending portion for fitting the upper die to the lower die is provided therein, and a feeding means for inserting the continuous fastener chain from the upstream side to the bending portion on the downstream side of the bending portion, and the bending portion. The continuous fastener chain is bent at the section and lateral feed means for guiding the continuous fastener chain in the moving direction as it moves laterally from the traveling path is provided, and the bending position of the continuous fastener chain is set on the upstream side of the bending section. And a pushing means for feeding the curved portion from the curved portion to the downstream side along the traveling path.

The pushing means is characterized in that a pair of needles for piercing the left and right fastener tapes of the continuous fastener chain are provided so as to be able to move up and down and reciprocate along the traveling path.

[0007]

The continuous fastener chain is installed so that it passes through the bending means through the positioning means and the pushing means, and further passes through the feeding means and the lateral feeding means, and the processed portion of the continuous fastener chain is provided by the feeding means provided downstream. While pulling into the bending part, the processing part surely opposes the bending part by the positioning means, stops the feed in that state to perform the bending process, and during that process, continuously moves in the lateral direction. The fastener chain is guided in the moving direction by the lateral feeding means. After the bending process is completed in this way, the processed part is sent to the downstream side of the traveling path by the push-feeding device provided upstream from the bending part, and the lateral-feeding device is returned to the original position according to the feed. It is the one to move back.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS To explain the present invention in detail, a continuous fastener chain F (hereinafter simply referred to as a chain) to be processed is a fastener tape T as shown in FIGS.
With a meshing element E protruding from the surface side of
Space portions S, that is, portions lacking the meshing elements E are provided at equal intervals in the longitudinal direction, and a lower stopper D is attached to one end of the space portion S before the bending process. The chain F is processed linearly with the meshing element E on the back side and is linearly moved so that the lower stopper D precedes.

As shown in FIG. 1, a bending portion 2 is provided in the traveling path 1 to which the chain F is fed, and the following means is provided on the traveling path 1 downstream of the bending portion 2 (on the left side in the drawing). The feeding means 3, this means supplies the chain F to the bending portion 2 before bending. As the lateral feed means 4 bends the chain F during bending, the chain F extending downstream from the bending portion 2 moves laterally, but this movement is surely guided.
Further, the following means is provided on the upstream side (right side in the drawing) of the bending portion 2. The positioning means 5 and the length of the chain F to be supplied to the bending portion 2 are set. Pushing means 6, this means sends the chain F from the bending portion 2 after the bending processing.

As shown in FIGS. 1 and 2, the curved portion 2 is provided with a lower die 7 and an upper die 8 which are vertically movable together, and the upper die 8 is slidable along the lower die 7. It is configured to be provided. Moreover, both molds 7 and 8 are installed so as to be inclined in a plane with respect to the longitudinal direction of the traveling path 1.

The lower die 7 is vertically movably fitted into a frame body 9, and the upper surface of the lower die 7 is pressed by a pressurizing cylinder 10 into the frame body 9.
Is raised so as to be flush with the upper surface of, and is raised slightly, that is, raised in two steps. As shown in FIG. 1, a curved groove 11 into which the meshing element E is fitted is provided on the upper surface of the lower die 7, and the curved groove 11 is formed by connecting a pair of front and rear straight portions 11a and 11b through a curved portion 11c. The linear portion 11a on the insertion side is provided along the traveling path 1 of the chain F. The curved curvature of the curved portion 11c is formed according to the desired curved slide fastener f (see FIG. 11). Further, a heater 12 is embedded in the lower mold 7. The curved groove 11 may be provided in the upper mold 8.

The upper die 8 is similar to the lower die 7 in the heater 1.
Scraper 1 with 2 buried and not heated at the beginning
3 is detachably provided so as to move from the start end side of the lower mold 7 to the end side and move upward to return to the original position in a box motion.
By cylinder 14 and Z cylinder 15.

As shown in FIGS. 2 to 4, the X-cylinder 14 reciprocates on a table 18, which is a cylinder tube, along a pair of piston rods 17, 17 installed between a pair of left and right columns 16, 16. The table 18 is moved forward and backward by inflowing and exhausting air pressure from one end of each piston rod 17, 17.

As shown in FIGS. 2 to 4, the Z cylinder 15 is fixed to the table 18, and the upper mold 2 is fixed to a pair of piston rods 19 of the Z cylinder 15, and the upper mold 8 is lowered. The fastener tape T of the chain F is lowered to a height such that the fastener tape T of the chain F is lightly pressed onto the upper surface of the mold 7 and then moved.

Therefore, in the bending process, after the chain F is set as shown in FIG. 1, the lower die 7 is moved up and the upper die 8 is moved down to slide as it is, whereby the meshing element E of the chain F is moved. Are sequentially accommodated in the curved groove 11, the linear chain F is curved, and as the curved chain F is curved, the downstream portion of the curved portion of the chain F moves laterally. Further, since the upper and lower molds 7 and 8 are heated, the upper and lower molds 7 and 8 are heat-set in a curved state to maintain the curved state.

As shown in FIGS. 1, 2 and 5, the feeding means 3 for feeding the chain F to the curved portion 2 has a motor 21 for driving the driving roller 20 which is orthogonal to the traveling path 1 in plan view. The length of the driving roller 20 is a section where the chain F moves laterally (2 in FIG. 1).
A longer one (shown by a dotted chain line) is attached, and an annular groove 22 with which the meshing element E engages is formed at a portion of the driving roller 20 that intersects with the traveling path 1, and an upper portion opposed to the annular groove 22 is formed. The driven roller 23 moves up and down the cylinder 2
It is provided to be movable up and down by 4. It is preferable that the surface of the driving roller 20 is engraved with knurls and the surface of the driven roller 23 is rubber-lined to ensure the feeding of the chain F.

Accordingly, by pressing the driven roller 23 on the driving roller 20 which is rotationally driven, the chain F
Is sent toward the downstream side with the engaging element E engaged with the annular groove 22, and the portion to be processed next is sent onto the bending portion 2. Further, the feeding is stopped by raising the driven roller 23.

As shown in FIGS. 1 and 2, the lateral feeding means 4 is provided with a lateral cylinder 25 which is downstream of the driving roller 20 of the feeding means 3 and which is parallel to the driving roller 20.
A guide 28, which is U-shaped and through which the chain F is inserted, is provided on a horizontal table 27 that slides along the piston rod 26 of the horizontal cylinder 25.

Next, the positioning means 5 provided on the upstream side is
The above-mentioned feeding means 3 controls to make the length supplied to the bending portion 2 constant, and as shown in FIGS. 1, 2 and 6, a frame body 9 having a lower mold 7. A substrate 29 connected to the chain F is provided in parallel with the traveling path 1, and a linear guide groove 30 continuous with the curved groove 11 of the lower mold 7 is provided on the surface thereof.
Although the meshing element E is fitted into the guide groove 30 to run, the base plate 29 is designed to prevent the chain F from floating during running.
Guide plates 31, 31 are provided on both sides of the guide groove 30 in the above so as to float above the substrate 29 so as to maintain a space in which the fastener tape T runs.

Further, one of the guide plates 31, 31 is provided with a standing wall 32, and a support shaft 33 is provided substantially at the center of the support wall 32 so as to be orthogonal to the guide groove 30.
A lever 34 formed long in the direction parallel to the guide groove 30.
Is supported so that it can swing up and down at its center,
The hole through which the support shaft 33 of the lever 34 passes is formed so that the lever 34 can move in the front-back direction, that is, in the upstream and downstream directions.
Is formed in a long hole 35 extending along the longitudinal direction of the lever 34, and the lever 34 is pulled toward the upstream side by a tension spring 36.

The lever 34 is provided with a claw portion 37 projecting downward at the tip of the lower mold 7 side, and the claw portion 37 is pushed downward to project into the guide groove 30. By the elevating means 38 provided at the upstream end of 34. The elevating means 38 is provided with a protrusion 39 made of a round bar protruding laterally from the lever 34, and a dock 41 facing the second sensor 40 protruding from the tip of the protrusion 39, while standing upright. The piston rod 43 of the positioning cylinder 42 is provided with an engagement body 44 for supporting the projection 39. The engagement body 44 has a substantially U-shape with the downstream side opened, and the projection 39 is formed in the recess 45. The cam surface 46 is formed so as to be inserted, and the inclined cam surface 46 is provided on the end surface of the lower protruding piece.

When the positioning cylinder 42 is at the bottom dead center, the lever 34 is pulled toward the downstream side by the spring 36 and the protrusion 39 is present on the cam surface 46, as shown by the chain double-dashed line in FIG. . Positioning cylinder 4 from this state
When 2 is driven upward, the protrusion 39 ascends while existing on the cam surface 46, and the claw portion 37 presses between both fastener tapes T of the chain F.

On the other hand, since the chain F is being transferred from the upstream side to the downstream side of the traveling path 1 by the feeding means 3, the first chain is provided below the guide groove 30 as shown in FIG. The sensor 47 detects the lower stopper D, the detection signal is used to slow down the feed speed by the feeding means 3, and the positioning cylinder 42 is further instructed to rise, and the claw portion 37 is detected.
Is inserted into the space portion S following the lower stopper D and thrusts.

Even after that, the chain F is still transferred, and the engagement element E following the space S to the claw 37 is formed.
Is hit, and the claw portion 37 is moved slightly forward together with the lever 34 as the chain F is transferred, where the dock 41 contacts the second sensor 40, and the driving of the feeding means 3 is stopped by the output signal from the second sensor 40. It is to order.

As shown by the solid line in FIG. 6, the state of the lever 34 at this time is such that the protrusion 39 of the lever 34 engages in the recess 45 from the cam surface 46 of the engaging body 44, and the claw portion 37 is tilted deeply. It holds the state. Further, when stopped in this manner, the lower stopper D is positioned at the entrance of the curved groove 11 and before reaching the curved portion 11c, as shown in FIG.

Next, as shown in FIGS. 1, 2 and 6 to 9, the pushing means 6 is provided with a pair of left and right needles 48,
48 at the front of the lever 34 of the positioning means 5,
The fastener tape T, T of the chain F is pierced and the needles 48, 48 are sent as they are along the traveling path 1
It is to be transferred to the front.

The concrete structure is that a vertical cylinder 49 is provided with a horizontal cylinder 50 parallel to the lateral side of the traveling path 1, and a piston rod 51 of the horizontal cylinder 50 is provided with an arm 52 extending upward from the traveling path 1. The arm 52 is provided with the pair of needles 48, 48 protruding from the arm 52.

Therefore, after the chain F is bent as shown by the chain double-dashed line in FIG. 1, the vertical cylinder 49 is driven downward to cause the needles 48 to pierce the fastener tape T and keep that state. Horizontal cylinder 50
When the chain F is driven forward, the curved portion of the chain F is kept in the curved state, and is sent downstream from the feeding means 3 so as to move in parallel.

After being sent out as described above, the vertical cylinder 49 is driven upward to pull up the needle 48, and the horizontal cylinder 50 is driven backward to return to the original position, but the needle 48 is pulled out. At this time, since the chain F is not tensioned, even if the vertical cylinder 49 is driven upward, the needle 48 may not be pulled out from the fastener tape T, which is unstable.

Therefore, in addition to the above structure, the bending portion 2
The pressing means 53 is provided between the feeding means 3 and the feeding means 3. The pressing means 53 is a pressing cylinder 5 that is driven up and down.
4 is configured to move the pressing piece 55 up and down.
By lowering the pressing piece 55 like
A tension force is applied to the needle 48 so that the needle 48 can be reliably pulled out.

As described above, the previously processed portion is sent out by the pushing means 6 and then the next portion is continuously processed. In this case, the needle 48 is extracted as described above and then the needle is removed. Although the drive roller 20 may be driven to rotate at all times by moving the driven roller 20 by moving the driven roller 20 backward while moving the driven roller 23 backward, the chain F is lowered by lowering the driven roller 23. 1
After being sent along with and stopped by the positioning means 5,
The upper and lower molds 7 and 8 are used for bending. In the processing step, the straight part 1 on the inlet side of the curved groove 11 is formed by raising the lower mold 7.
By engaging the meshing element E in the la 1a, descending the upper die 8 there, and then advancing along the lower die 7, the meshing element E is moved from the curved portion 11c to the straight portion 11b on the outlet side.
Then, the fastener die T is pressed against the upper die 8 to heat-set by lowering the lower die 7 slightly further. After the above processing is completed, the portion processed by the pushing means 6 is extruded, and these respective steps are repeated.

[0032]

According to the bending slide fastener manufacturing apparatus of the present invention, the feeding means and the lateral feeding means are provided on the downstream side of the bending portion, the positioning means and the pushing feeding means are provided on the upstream side, and the bending means is provided. After bending the chain at the processing part, the curved part is not pushed out on the downstream side but sent out by pushing it from the upstream side.That is, the above-mentioned curved part was pulled down on the downstream side. in case of,
Since tension is applied to the curved part, even if it is heat set, it is not completely restored by the tension, but it becomes larger than the predetermined curvature, and in order to suppress this, after heat setting, It needs to be cooled,
Since it is pushed out from the upstream side as in the present invention and is sent out without being deformed without being applied with tension to the chain, cooling after heat setting becomes unnecessary and it is possible to improve processing efficiency. Become.

If the needle is pierced into the fastener tape and sent out as the pushing-out means, the structure is simple, and even if it is pushed out, it can be sent out smoothly without stagnation.

[Brief description of drawings]

FIG. 1 is a plan view of an apparatus for manufacturing a curved slide fastener according to the present invention.

FIG. 2 is a perspective view of the same.

FIG. 3 is a side view of a bending portion.

FIG. 4 is a sectional view of the same.

FIG. 5 is a front view showing a main part of a feeding unit.

FIG. 6 is a cross-sectional view of positioning means.

FIG. 7 is a cross-sectional view of a push-feed unit.

FIG. 8 is a plan view showing a state in which the chain after bending is sent out.

FIG. 9 is a sectional view of the same.

FIG. 10 is a front view of a continuous fastener chain.

FIG. 11 is a front view of the processed curved slide fastener.

[Explanation of symbols]

 F Continuous fastener chain T Fastener tape E Engaging element D Lower stopper S Space part 1 Traveling path 2 Curved part 3 Feeding means 4 Lateral feeding means 5 Positioning means 6 Pushing means 7 Lower die 8 Upper die 11 Bending groove 48 Needles

Claims (2)

[Claims] 1. A meshing element (E) of a continuous fastener chain is provided in either a lower die (7) or an upper die (8) in a running path (1) for linearly feeding the continuous fastener chain (F). The curved groove (11) is provided with a curved portion (2) for fitting the upper die (8) to the lower die (7) by means of sliding the upper die (8), and on the downstream side of the curved portion (2). The feeding means (3) for inserting the continuous fastener chain from the upstream into the bending portion (2) and its movement as the continuous fastener chain is bent in the bending portion (2) and moves laterally from the traveling path (1). A transverse feeding means (4) for guiding the continuous fastener chain in the direction, and a positioning means (5) for setting the bending position of the continuous fastener chain upstream of the bending portion (2); Curved part (2) An apparatus for manufacturing a curved slide fastener, comprising: a push-out means (6) for sending the material further downstream along the traveling path (1). 2. The pushing means (6) reciprocates a pair of needles (48) that pierce the left and right fastener tapes (T) of the continuous fastener chain (F) up and down and along the traveling path (1). It is provided so that it is possible.
An apparatus for manufacturing the curved slide fastener described in.