JPS6012144B2 - Manufacturing method and device for coiled elements for slide fasteners - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for continuously manufacturing coiled fastener elements by winding metal or plastic filaments supplied from a filament storage body around a core pole. Specifically, the present invention provides a method and apparatus for manufacturing coiled fastener elements at high speed using a large filament storage body and without twisting.

Various methods and devices for manufacturing coiled fastener elements of this type are known, but none yet exist that use a large longitudinal storage body and are capable of manufacturing untwisted fastener elements at high speed.

Increasing the size of the filament storage body (bobbin, etc.) is very desirable from the quality of the element and workability, as it allows the production of seamless long elements with one filament storage body and reduces the number of bobbin changes. However,
With conventional devices, it has been impossible to prevent twisting of the coil element and to increase the size of the filament storage body. In other words, the conventional methods include, for example, a method to an apparatus for forming a coiled fastener element by using a filament storage body installed in a stereotactic layer and winding bran strips drawn from the filament storage body around a core rod. It has been known.

This conventional method has the advantage of increasing the size of the filament storage body, but each time the supply filament turns, the filament twists, and this twist enters the coiled fastener element, which leads to the engaging head of the element. It has been difficult to obtain high-quality elements because of the influence on the form of the elements and the dimensions and shapes of the elements. As a device that eliminates the influence of such twisting of the filaments, there is a known one in which the filament storage body is rotatably installed.

For example, as shown in FIG. 3, it is known that the filament is wound around the core rod by rotating the filament storage body 5' around the center of the core rod 42'. Since the centrifugal force generated by the rotation around the t-axis is large, only a small filament storage body can be used. In addition, in order to perform twist-free coiling using a large filament storage device, it is also considered to manufacture a fastener element by winding the filament pulled out from a fixed filament storage device around a rotating core. However, since the fastener elements coiled by this method are long and continuous, and are discharged while rotating, it is impossible to store them in a container. , it is impossible to employ it in connection with the process of assembling fastener elements, etc.The present invention uses a large twill storage body and is designed to prevent twisting that would adversely affect the formed elements. A novel method and apparatus for manufacturing a coiled fastener element, which has an excellent effect that cannot be achieved with conventional technology, and which enables fastener elements with stable quality to be manufactured at high speed. The purpose is to provide

Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 shows a first embodiment of a coiled element manufacturing apparatus according to the present invention. 3 and a coiling device 4, these devices are arranged side by side in the horizontal direction. It is provided with a non-rotating filament guide 6 located in the outer circumferential direction of the green filament storage body 5 and a rotor m7 which rotates around the outer circumference of the twill filament storage body 5.

This rotor 7 is supported by a drive shaft 9 and a frame 81.
These are connected and rotated by the drive koji 9. In the illustrated example, the rotor T is approximately bowl-shaped, and has a supporting amount Q projecting horizontally from the center of its inner surface. This support shaft Q' is formed with a threaded hole through which it passes through the back of the rotor 7. Furthermore, a linear guide piece 2 is provided on the back of the rotor 7. The filament guide 6 includes a sleeve 13, a guide arm neck 4 fixed to the sleeve turtle 3 and extending to a position above the filament storage body 5, and a weight arm 15 extending to a position below the filament storage body 5. The sleeve mechanism 3 is mounted on the support shaft 181 of the rotor 7 so as to be rotatable.

The weight arm cap 5 is used to hold the guide arm 14 on the stereotaxic layer, and in the illustrated example, a weight turtle 6 is provided on the weight arm, and a means for holding the guide arm turtle 4 on the stereotaxic layer by its gravity is used. Alternatively, in addition to using gravity, a permanent magnet may be attached to the twill guide 6, and an electromagnet facing the twill may be placed outside the rotor 7 to apply braking by electromagnetic force. Storage body 5
is rotatably attached to the sleeve 13 of the filament guide 6.

The front end of the filament storage body 5 has a filament through hole 1 for the support shaft 10.
1 and a linear guide sleeve 17 having a guide hole that overlaps with 1.
is installed. The filament W wound around the filament storage body 5 passes through the guide hole 18 of the guide arm 14 to reach the tip of the filament guide sleeve 17, and passes from the guide hole of the filament guide sleeve 17 to the filament passing hole of the support shaft 10. 11 to the back of the rotor 7, and then passes through the filament guide piece 12 to the filament feeding device 2 in front. When the filament guide 6 is stopped as in the illustrated embodiment, the filament storage body 5 rotates at a low speed depending on the amount of filament drawn out.

As another embodiment, the filament storage body 5 may be stopped and the filament guide 6 may be rotated in accordance with the amount of the filament drawn out. In that case, of course, stopping means such as the weight 16 of the filament guide 6 is not necessary, and the bran filament storage body 5 is provided with a stopping means. As described above, this stopping means may also be provided with a weight on the filament storage body 5, or may use an eccentric filament storage body. In this case, the filaments will be twisted in response to each drawer, but since this degree of twisting has little effect on the quality of the element, the structure of this other embodiment may be adopted. The filament feeding device is supported by a drive shaft 20 on a fixed frame 19 in order to actively pull out the filament W from the filament storage device 1 and to transfer the twist imparted by the filament storage device 1 as it is. , a rotating frame 21 that rotates in the same direction as the rotor 7 at twice the speed.
A drive roller 22 and a pinch roller 23 are attached to this rotating frame 21.

A pair of bevel gears 25 and 26 are attached to the shaft 24 of the drive roller 22, and a bevel gear 27 supported by a shaft 28 meshes with these bevel gears 25 and 26. A gear 25 ) rotates the drive roller 22 . The rotating frame 21 is rotated by a motor (not shown) via a belt 30 that is hung around a belt pulley 29 fixed to the drive frame 201. Also, bevel gear 2
7 is rotated by a motor (not shown) via a belt 32 that is passed around a belt pulley 311 fixed to the shaft 28. This causes the drive roller 22 to rotate via the bevel gear 25. A hole is formed in the drive shaft 20 and the shaft 28 for passing the filament W therethrough. The filament coming from the filament storage device 1 enters the hole of the drive shaft 20 and passes through the pinch roller 2.
It passes through one side (the front part in the drawing) of 3 and is held between the drive roller 22, is further wound around the drive roller 22 once, is pulled out from the hole of the shaft 28, and is directed to the next constant tension device 3. The constant tension device 3 is used to always apply a constant tension to the filament, and it creates slack in the filament between a pair of guide rollers 34 and 35 attached to the frame 33, and removes this slack. A tension roller 37 with a weight 36 is suspended from the portion.

By appropriately adjusting the weight 36, the tension imparted to the filament is adjusted. Detection switches 38 and 39 are mounted on the frame 33 above and below the tension roller 37 to detect the degree of slack in the filament. The detection switches 38 and 39 are, for example, limit switches, photoelectric elements, or the like, and detect the upper limit and lower limit of the tension roller 37. If the speed of the filament sent out from the filament supply device 2 is faster than the speed of the filament drawn into the coil isog device 4, the slack of the filament gradually increases, and the tension roller 37 descends to detect the lower part. Switch 39 detects the lower limit. This detection switch 39
Based on the detection signal, the amount of wire feed by the wire supply device 2 is controlled to be smaller than the amount of retraction of the coiling device 4. Conversely, if the speed of the filament sent out from the filament supply device 2 is slower than the retracting speed of the coiling device 4, the slack of the filament will be reduced, the tension roller 37 will rise, and the upper detection switch 38 will set the upper limit. Detect. Based on the detection signal from the detection switch 38, the amount of wire feed by the wire supply device 2 is controlled to be greater than the amount of draw by the coiling device 4. These control means may be any known speed control means, such as directly controlling the speed of the motor of the filament feeding device 2 or changing the speed ratio using a clutch. Further, the coiling device 4 may be controlled by a similar control means. The coiling device 4 is not particularly different from conventional devices, and includes a thin core bobbin 41 around which a core string 40 is wound, a core holder 43 that holds a core rod 42, a winding rotor 44, etc., and is the same as the rotating frame 21. The filament W is attached to the core rod 42 by the rotation of the winding rotor 44 which rotates at the same speed in the direction
Turn it around.

The wound coil element is transported by a desired molding and transporting device (not shown) and molded by heating or the like. The apparatus of the present invention has the above-mentioned configuration, and the overall operation will be explained next.

The filament is continuously coiled in the coiling device 4, and the filament is drawn out from the filament storage device 1 accordingly. The rotor 7 of the filament storage device 1 rotates in the same direction as the winding rotor 44 of the coiling device 4 rotates. At this time, since the filament guide 6 is stopped in the illustrated embodiment, only the filament storage body 5 rotates at a low speed in accordance with the amount of filament drawn out. Each rotation of the rotor 7 gives the filament two twists, and each rotation of the winding rotor 44 of the coiling device 4 twists the filament once, so in order to completely cancel out this twist, The rotor 7 only needs to rotate 1/2 per rotation of the winding rotor 44. In this case, when the filament storage body 5 rotates according to the amount of filament supplied as in the illustrated embodiment, the filament storage body 5 moves from the guide arm turtle 4 to the filament storage body 5.
! There is no twist at all in the filaments between the ends. The filament W twisted in the filament storage device 1 is further actively pulled out by the filament supply device 2 and fed while maintaining its twist.

That is, the rotating frame 21 rotates in the same direction as the rotor 7 through the belt 3Q, the belt wheel 29, and the drive shaft 20, and the driving roller 22 rotates in the same direction as the rotor 7 through the belt 32 and bevel gears 25 and 27. By actively rotating and pulling out the filament between the filament storage device turtle and the coiling device 4 in this way, the filament can be coiled without any kinks. FIG. 2 shows a second embodiment of the device of the present invention, and is an example in which each device is arranged three-dimensionally.

That is, the filament storage device 1 and the filament supply device 2 are placed at the bottom, and the constant tension device 3 and the coiling device 4 are placed at the top. By arranging it in this way, the occupied area can be reduced and workability can be improved. As described above, according to the method and apparatus of the present invention, ``Since the filament storage body is installed vertically and does not apply rotational or turning power to itself, it is possible to use a large filament storage body. High-precision elements can be obtained and high-speed molding is possible.Also, since the twist imparted to the filament in the filament storage device is transferred directly to the coiling device, it is possible to forcibly pull out the filament. Despite this, ``There is no twist in the twill during coiling.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway front view showing a first embodiment of the device of the present invention, FIG. 2 is a partially cutaway front view showing the second embodiment, and FIG. 3 is a front view of a conventional device. Tortoise...Striae storage device, 2...Striae supply device, 4
... coiling device, 5 ... filament storage body, 7 ...
... Rotor, 21 ... Rotating frame, 22 ... Drive roller, 23 ... Pinch roller, W ... Line. Figure 1 Figure 2 Figure 3

Claims (1)

[Claims] 1. A method for manufacturing a continuous spiral coiled slide fastener element from filaments, the method comprising: a first step of supplying filaments W from a filament storage device 1; It includes a second step of forcibly drawing out the filament W from the filament storage device 1, and a third step of winding the filament W around the core rod 42 to manufacture a spiral slide fastener element, In step 1, while supplying the filament W from the filament storage body 5 supported so as to freely rotate in a fixed position, the filament W is wound around the filament W in the third step. The second step further includes the step of rotating the filament W in accordance with the rotation and in the same direction so as to cause the filament W to twist in the same direction as the filament, the second step being a twist of the filament twisted in the first step. further comprising the step of transferring the same to the next step,
The process is characterized in that it further includes the step of coiling the filament onto the core rod 42 in an untwisted state by canceling out the twist caused by winding the filament W around the core rod 42 by the previously applied twist. A method for manufacturing a coiled element for a slide fastener. 2. A filament storage body 5 rotatably supported on a drive shaft 9 in a fixed position, and a filament W led from one side of the filament storage body 5 to the other side in order to give twist A filament storage device 1 comprising a rotor 7 connected to a filament storage body 9 and rotating around the filament storage body 5; a rotating frame rotatably driven in the twisting direction of the filament W in order to feed the filament W while maintaining its twist; 21, and a drive roller 22 that is mounted on the rotary frame 21 and rotates in the feeding direction of the filament W; a filament winding core rod 42 held in a core rod holder 43; and the core rod 4 in order to wrap the wire around the core rod 42.
2, the rotor 7 of the filament storage device 1, the rotating frame 21 of the filament supply device 2, and the winding rotor 44 of the coiling device 4 are connected to the filament storage device 1. 1. An apparatus for manufacturing a coiled element for a slide fastener, characterized in that the coiled element is rotated in the same direction as the rotor 7 of No. 1 and in synchronization with the rotation of the filament so as to cause twisting in the filament itself at the same rate.