TWI526172B - Positioning apparatus for space forming apparatus of a slide fastener - Google Patents

Description

Positioning device for space forming device of zipper chain

The present invention relates to a positioning device for a space forming device of a slide fastener chain, which is formed by removing a sprocket of a section of a predetermined length on a long zipper chain to form a space in which no sprocket exists. In this case, the fastener elements that are adjacent to the upstream side end and the downstream side end of the space are not damaged or are not positioned so as to remain in a half-naked state.

In the past, in the manufacturing process of a zipper, a space forming device was used to form a space of a predetermined length in which a fastener element does not exist on a long zipper chain.

A conventional space forming apparatus includes a device for transporting a fastener chain, a device for removing a fastener element from a fastener tape, and the like, and removing a fastener element at a space forming portion of the fastener chain to form a space.

When a space is formed on the zipper chain, various factors such as the error of the space forming device itself, the expansion and contraction of the fastener tape, the difference in the size of the sprocket pitch itself, and the inertia at the time of stopping the transfer of the zipper chain may occur. The correct positioning cannot be performed, so that the fastener element adjacent to the upstream side end and the downstream side end of the space is damaged during the space processing, or remains in a half-defective state.

In order to prevent the above, Patent Document 1, Patent Document 2, Patent Document 3, and Patent Document 4 disclose a space forming device in which a positioning device is provided to correct a chain adjacent to an upstream end and a downstream end of a space. Position the teeth and position them correctly.

In the space forming apparatus disclosed in Patent Document 1, the positioning device is provided on the upstream side or the downstream side of the space forming portion to correct the position of the fastener element.

In the space forming apparatus disclosed in Patent Document 3 and Patent Document 4, positioning means are provided at two locations on the upstream side and the downstream side of the space forming portion to correct the position of the fastener element.

In the space forming apparatus disclosed in Patent Document 3, the claws of the positioning device provided on the upstream side and the downstream side of the space forming portion are protruded into the gap between the fastener teeth adjacent to the upstream end and the downstream end of the space forming portion. After that, the claw is moved toward the center of the space forming portion, whereby the gap of the fastener element is temporarily pressed to be compressed to correct the position of the fastener element.

In the space forming apparatus disclosed in Patent Document 4, the pins of the positioning device provided on the upstream side and the downstream side of the space forming portion are supported to swing forward and backward, and after being inserted into the element gap in a free state, The pin is in a vertical state, whereby the sprocket adjacent to the upstream end and the downstream end of the space forming portion is moved forward and backward to correct the position of the sprocket.

[Prior Art Literature]

[Patent Literature]

[Patent Document 1] Japanese Patent Publication No. Sho 56-33362

[Patent Document 2] Japanese Patent Publication No. 63-1041

[Patent Document 3] Japanese Patent Publication No. 53-16713

[Patent Document 4] Japanese Patent Publication No. Sho 53-31611

As disclosed in Patent Document 1 and Patent Document 2, when a positioning device is provided at one of the upstream side or the downstream side of the space forming portion, since the position of the fastener element on the side where the positioning device is not provided is not corrected, Sometimes the sprocket on one side is damaged or becomes a half-naked state.

In order to prevent this, as disclosed in Patent Document 3 and Patent Document 4, a positioning device may be provided on the upstream side and the downstream side of the space forming portion.

However, the positioning device disclosed in Patent Document 3 and Patent Document 4 does not have a means for detecting that the claw or the pin of the positioning device protrudes into the element gap, and therefore sometimes stays in the element gap. In the state of the outer surface of the fastener element, the element removing device operates, and as a result, the fastener element may be damaged or may remain in a half-defective state.

The present invention has been made in view of the above problems, and it is an object of the invention to provide a positioning device for a space forming device for a fastener chain that does not damage the fastener elements of the upstream side end and the downstream side end adjacent to the space of the fastener chain, or does not It remains in a semi-deficient state, so that a good-looking element can be formed to form a space.

The present invention is a positioning device for a space forming device for a zipper chain, which is characterized in that it includes a first positioning device 40 that performs a chain of the upstream side of the chain transfer direction of the fastener chain 10 adjacent to the space forming portion 15. Positioning The second positioning device 50 positions the fastener element row on the downstream side of the chain transfer direction of the fastener chain 10 adjacent to the space forming portion 15; the first detecting unit 43 detects that the first positioning device 40 has been attached to the fastener chain 10 Positioning the element line on the upstream side of the chain transfer direction adjacent to the space forming portion 15; the second detecting unit 53 detects that the second positioning device 50 has transferred the chain adjacent to the space forming portion 15 of the fastener chain 10 The fastener element row on the downstream side of the direction is positioned; and the control device 63 performs the detecting operation by the first detecting unit 43 and the second detecting unit 53, thereby removing the element of the space forming portion 15 of the fastener chain 10 The sprocket removing device 30 of the row operates.

The present invention can be set as a positioning device for a space forming device of a zipper chain, the first positioning device 40 including a first positioning member 41 that projects the claw 45 into the space forming portion 15 of the zipper chain 10. Positioning in the sprocket gap 14 of the sprocket row on the upstream side of the adjacent chain transfer direction, the first detecting unit 43 detects that the claw 45 of the first positioning member 41 has protruded into the sprocket gap 14 The second positioning device 50 includes a second positioning member 51 that projects the claw 55 into the element gap of the element row on the downstream side of the chain transfer direction of the fastener chain 10 adjacent to the space forming portion 15. Positioning is performed in 14 and the second detecting unit 53 detects that the claw 55 of the second positioning member 51 has protruded into the element gap 14.

The present invention can be set as a positioning device for the space forming device of the zipper chain, the first locating member 41 projecting into the first position in the sprocket gap 14 across the claw 45 and The pawl 45 moves in a second position spaced apart from the sprocket 13 , the second locating member 51 projecting across the pawl 55 into a first position in the sprocket gap 14 and a second position in which the pawl 55 is spaced from the sprocket 13 Moving, and providing a restriction device that restricts movement of the second positioning member 51 to the first position, and after the first positioning member 41 moves to the first position, moves the second positioning member 51 to the first position a location.

According to the positioning device, the claw 55 of the second positioning member 51 does not protrude into the element gap 14 before the claw 45 of the first positioning member 40, but the downstream side of the fastener chain 10 adjacent to the space forming portion 15 In the case where the sprocket rows are positioned, the claws 45 of the first positioning member 41 are necessarily protruded into the sprocket gap 14, so that the sprocket rows of the upstream side of the zipper chain 10 adjacent to the space forming portion 15 are first positioned. When the tension is applied to the fastener tape 12 of the fastener chain 10, the fastener element row of the downstream side of the fastener chain 10 adjacent to the space formation part 15 can be positioned.

Therefore, the fastener element row on the upstream side and the fastener element row on the downstream side adjacent to the space forming portion 15 of the fastener chain 10 can be reliably and accurately positioned.

The restriction device of the present invention may include a first action bar 42 mounted on the first positioning member 41, and a second action bar 52 mounted on the second positioning member 51, and When the first positioning member 41 is not in the first position, the second action bar 52 abuts against the first action bar 42 , thereby restricting the second positioning member 51 from moving to the first position, when the first positioning member 41 is located at the first position In the position, the second positioning member 51 can be moved to the first position.

According to this, since the movement of the second positioning member 51 to the first position is mechanically restricted, the operation reliability of the restriction device is excellent.

The present invention can be used as a positioning device for a space forming device of a zipper chain, and is provided with an energizing unit 46 for moving the first positioning member 41 toward the first position; and a holding unit 47, Actuating between the state in which the first positioning member 41 is moved to the second position and held in contact with the biasing force of the biasing unit 46, and the state in which the holding is performed, and the biasing unit 56 is provided to position the second positioning The member 51 is moved and biased toward the first position; and the holding unit 57 is moved between the state in which the second positioning member 51 is moved to the second position against the urging force of the urging unit 56 and is held, and the state in which the holding is released. action.

According to this, if the holding unit 47 and the holding unit 57 are operated between the holding state and the holding release state, positioning can be performed, and the operation control can be easily performed.

The present invention can be used as a positioning device for a space forming device of a zipper chain, and the first positioning member 41 and the second positioning member 51 have a plurality of claws 45 and claws 55 at intervals in the direction in which the fastener chain 10 is transferred. The claws 45 and 55 protrude into the element gap 14, and the adjacent two claws 45 and 55 hold one element 13 .

According to this, it is possible to suppress the displacement, the movement, the inclination, and the like of the positioned element row, and it is possible to position the element line with high precision.

In the present invention, the fastener element row of the upstream side of the fastener chain 10 adjacent to the space forming portion 15 and the fastener element row on the downstream side are positioned, and the fastener element row of the space forming portion 15 is removed, and thus the fastener chain 10 is removed. The sprocket 13b on the upstream side end adjacent to the space forming portion 15 and the sprocket 13c on the downstream side end are not damaged or remain in a half-naked state, so that a good-looking element can be formed to form a space. 16.

10‧‧‧ zipper chain

12‧‧‧ zipper tape

13‧‧‧ sprocket

14‧‧‧ sprocket clearance

15‧‧‧ Space forming parts

16‧‧‧ Space

20‧‧‧Chain transfer device

30‧‧‧ sprocket removal device

40‧‧‧First positioning device

41‧‧‧First positioning member

41a‧‧‧One side of the chain transfer direction

41b‧‧‧Chapter transfer direction to the other side of the other side

42‧‧‧First action bar

43‧‧‧First detection unit

43a‧‧‧First proximity switch

44‧‧‧Guide Department

44a‧‧‧One side guide

44b‧‧‧Other side guide

45‧‧‧ claw

46‧‧‧ force unit

46a‧‧‧Spring Receiver

46b‧‧‧Compressed coil spring

47‧‧‧keeping unit

47a‧‧‧ cylinder

47b‧‧‧Piston

50‧‧‧Second positioning device

51‧‧‧First positioning member

52‧‧‧Second action stick

53‧‧‧Second detection unit

53a‧‧‧Second proximity switch

54‧‧‧Guidance Department

54a‧‧‧One side guide

54b‧‧‧Other side guide

55‧‧‧ claws

56‧‧‧Power unit

56a‧‧‧Spring Receiver

56b‧‧‧Compressed coil spring

57‧‧‧Holding unit

57a‧‧‧ cylinder

57b‧‧‧Piston

63‧‧‧Control device

Fig. 1 is a schematic front view of a space forming apparatus of the present invention.

Figure 2 is a top plan view of the zipper chain.

Fig. 3 is a plan view of a fastener chain formed with a space.

4 is a top plan view of the positioning device.

Fig. 5 is an explanatory view of the positioning action.

Fig. 6 is an explanatory diagram of the positioning action.

Fig. 7 is an explanatory diagram of the positioning action.

A space forming device that forms a space on a fastener chain will be described with reference to Fig. 1 .

As shown in FIG. 1, the space forming apparatus 1 includes: a chain transfer device 20 that transfers a fastener chain 10 (hereinafter, simply referred to as a chain 10) along a chain transfer path; and a fastener removing device 30 that removes the fastener elements of the chain 10; The positioning device 40 is disposed on the upstream side of the element removing device 30; the second positioning device 50 is disposed on the downstream side of the element removing device 30; and the detecting device 60 is disposed on the upstream side of the first positioning device 40 and on the chain The amount of transfer of 10 is detected.

The upstream side is the upstream side in the transfer direction of the chain 10 of the chain transfer path, and the downstream side is the downstream side in the transfer direction of the chain 10 of the chain transfer path.

As shown in FIG. 2, the chain 10 has two fastener strings. 11.

The chain belt 11 includes a zipper tape 12 and a chain of teeth, which are formed by attaching the sprocket 13 across the length direction at a fixed pitch on one side edge of the zipper tape 12, and the adjacent sprocket of the sprocket row 13 is spaced apart and has a sprocket gap 14. For example, the sprocket 13 of the synthetic resin is injected and attached to one side edge of the fastener tape 12.

As shown in FIG. 1, the chain transfer device 20 has a drive roller 21 and a pinch roller 22. The chain 10 is held by the driving roller 21 and the pinch roller 22, and the chain 10 is transferred in the downstream direction indicated by the arrow a by rotating the driving roller 21 in the direction of the arrow.

The chain 10 is transferred in the upstream direction indicated by the arrow b by rotating the drive roller 21 in the opposite direction to the arrow.

The element removing device 30 has a mold 31 and a punch 32. By moving the mold 31 or the punch 32 toward the chain 10, the plurality of fastener elements 13, that is, the element rows of the space forming portion 15 of the chain 10, are removed from the fastener tape 12. Thereby, a space 16 in which the sprocket 13 is not present is formed on the chain 10 as shown in FIG.

The detecting device 60 has a gear 61 and an encoder 62. The gear 61 meshes with the sprocket 13 of the chain 10, and the gear 61 rotates by the transfer of the chain 10.

The encoder 62 outputs a signal in units of a predetermined rotation angle of the gear 61, for example, every time one of the fastener elements 13 passes. The signal output from the encoder 62 is sent to the control device 63.

The control device 63 detects the amount of transfer of the chain 10 by the signal of the encoder 62.

The first positioning device 40 positions the element row of the upstream side of the chain 10 adjacent to the space forming portion 15.

As shown in FIG. 4, the first positioning device 40 includes a first positioning member 41, a first action bar 42, and a first detecting unit 43.

The first positioning member 41 positions the element row of the upstream side of the chain 10 adjacent to the space forming portion 15 in the chain transfer direction.

The first positioning member 41 is disposed in parallel with the surface of the fastener tape 12 on the side of the chain 10 at a right angle to the chain transfer direction. The first positioning member 41 is supported by a guide portion 44 fixed to a frame (not shown), and the first positioning member 41 advances and retreats with respect to the fastener element 13.

When the first positioning member 41 is advanced, the first positioning member 41 approaches the sprocket 13 .

When the first positioning member 41 retreats, the first positioning member 41 is spaced apart from the fastener elements 13.

The guide portion 44 has a one side guide 44a and the other side guide 44b, and the one side guide 44a is in contact with one side surface 41a of the first positioning member 41 on the side in the chain transfer direction. The other side guide 44b is in contact with the other side surface 41b of the other side of the first positioning member 41 in the chain transfer direction.

A plurality of claws 45 are provided at equal intervals in the chain transfer direction at the front end of the first positioning member 41 facing the sprocket 13 . In the embodiment, the three claws 45 are provided at equal intervals in the chain transfer direction.

The claws 45 project into the element gaps 14 of the element rows of the upstream side of the chain 10 adjacent to the space forming portion 15, and position the element rows of the chain 10 on the upstream side adjacent to the space forming portion 15.

The interval between the adjacent claws 45 in the chain transfer direction is the same as the size of the fastener elements 13 in the chain transfer direction, that is, the width of the fastener elements 13.

Thereby, the claws 45 protrude into the element gap 14, whereby the adjacent claws 45 come into contact with both side faces in the width direction of the fastener elements 13, and the first positioning member 41 holds the fastener elements 13.

The first positioning member 41 is advanced to the first position by the biasing unit 46.

When the first positioning member 41 is in the first position, the claw 45 protrudes into the element gap 14.

The first positioning member 41 is held by the holding unit 47 against the biasing force of the biasing unit 46 and retracted to the second position, and the first positioning member 41 is held by the holding unit 47 in the second position. The first positioning member 41 is moved to the first position by the force applying unit 46 when the holding unit 47 is released from the holding.

That is, the holding unit 47 operates between the hold state and the hold release state.

In the embodiment, the first actuating bar 42 is attached to the rear end of the first positioning member 41 opposite to the sprocket 13 .

The compression coil spring 46b is attached between the spring receiving portion 46a of the bracket (not shown) and the first operating rod 42, and the first positioning member 41 is biased in the direction of the sprocket 13, that is, in the forward direction by the compression coil spring 46b. Thereby, the biasing unit 46 is formed.

The one side guide 44a of the guide portion 44 is attached to the front-rear direction of the cylinder 47a, and the piston 47b of the cylinder 47a is brought into contact with the first operating rod 42 to form the holding unit 47.

Thus, when the piston 47b of the cylinder 47a is extended, the piston 47b presses the first actuating bar 42 rearward, and the first actuating bar 42 contracts the compression spring 46b, so that the first positioning member 41 retreats and the first positioning member 41 is located. A second position in which the pawl 45 is spaced from the sprocket 13.

When the piston 47b of the cylinder 47a is contracted, the piston 47b is separated from the first actuating bar 42, the compression spring 46b is extended, and the first actuating bar 42 is moved toward the sprocket 13, so that the first positioning member 41 advances.

The first detecting unit 43 detects that the first positioning member 41 has moved to the first position.

In the embodiment, the first proximity switch 43a is attached to the other side guide 44b of the guide portion 44. The first proximity switch 43a faces the first actuating bar 42 and detects that the first actuating bar 42 that has advanced by the extension of the compression spring 46b approaches the first proximity switch 43a by a predetermined distance, so that the first proximity switch 43a operates. output signal.

When the first action bar 42 approaches the first proximity switch 43 by a predetermined distance, the claw 45 of the first positioning member 41 is caused to protrude into the inter-slit 14 . That is, the first positioning member 41 is moved to the first position.

Thereby, the first proximity switch 43 confirms that the first positioning member 41 is moved to the first position, and the claw 45 protrudes into the element gap 14, thereby outputting a signal.

The signal output from the first proximity switch 43a is sent to the control device 63, and the control device 63 associates the signal with the signal of the second proximity switch 53a, which will be described later, of the second positioning device 50 to control the operation of each device.

For example, the signal of the first proximity switch 43a and the signal of the second proximity switch 53a are sent to the control device 63, and the control device 63 controls the operations of the chain transfer device 20, the element removing device 30, the cylinder 47a, and the cylinder 57a.

The second positioning device 50 positions the chain line of the chain 10 on the downstream side adjacent to the space forming portion 15.

The second positioning device 50 has the same configuration as the first positioning device 40, and includes a second positioning member 51, a second action bar 52, and a second detecting unit 53 having a second proximity switch 53a.

The second positioning member 51 is disposed in parallel with the surface of the fastener tape 12 on the side in the direction perpendicular to the chain transfer direction with respect to the chain 10 . Second positioning member 51 It is supported by the guide portion 54 to advance and retreat.

The second positioning member 51 is configured to be advanced by the second positioning member 51 to be in the first position, and to cause the three claws 55 provided at the front end thereof to protrude into the fastener row on the downstream side of the chain 10 adjacent to the space forming portion 15. In the sprocket gap 14, the positioning of the sprocket line on the downstream side adjacent to the space forming portion 15 is performed.

The urging unit 56 that biases the second positioning member 51 toward the first position includes a compression spring 56b that is crimped to the second action bar 52 and supported by the spring receiving portion 56a.

The holding unit 57 that holds the second positioning member 51 in the second position is assumed to be the cylinder 57a attached to the other side guide 54b of the guide portion 54.

The compression spring 56b is contracted by the extension of the piston 57b of the cylinder 57a to press the second action bar 52 rearward, the second positioning member 51 is moved to the second position, and the second positioning member 51 is held in the second position. .

The second proximity switch 53a as the second detecting unit 53 is attached to the one side guide 54a of the guiding portion 54 in the front-rear direction, and the second proximity switch 53a faces the second operating rod 52.

Similarly to the first proximity switch 43a, the second proximity switch 53a detects that the second operating bar 52 approaches the second proximity switch 53a by a predetermined distance, and confirms that the claw 55 of the front end of the second positioning member 51 protrudes into the element gap 14. And output the signal. Thereby, the second detecting means 53 can be used to detect that the second positioning member 51 has moved to the first position.

The signal output from the second proximity switch 53a is sent to the control device 63, which associates the signal with the signal of the first proximity switch 43a to control the operation of each device.

In the second positioning device 50, a restriction device is provided which always causes the claw 55 of the second positioning member 51 to protrude after the claw 45 of the first positioning member 41 protrudes into the element gap 14 on the upstream side. In the sprocket gap 14 on the downstream side, there is no obstacle to the positioning of the upstream side by the first positioning device 40.

In the embodiment, the second actuating bar 52 of the second positioning device 50 is disposed behind the first actuating bar 42 of the first positioning device 40 as shown in FIG. The second actuating bar 52 of the second positioning device 50 is always restrained by the first actuating bar 42 of the first positioning device 40 without advancing to the front.

Further, the restriction device shown in FIG. 4 is mechanically restricted in the front-rear direction of the first operation bar 42 and the second operation bar 52, but may be electrically limited by using an operation switch or the like.

Then, the positioning action of the first positioning device 40 and the second positioning device 50 will be described.

The chain transfer device 20 is driven to transfer the chain 10 in the downstream direction along the chain transfer path. At this time, the piston 47b and the piston 57b of each of the cylinders 47a and 57a are extended, and the first positioning member 41 and the second positioning member 51 are held at the second position.

The amount of transfer of the chain 10 is detected by the detecting device 60, and the driving of the chain transfer device 20 is stopped when the amount of transfer of the chain 10 is a predetermined value. Thereby, the chain 10 is stopped such that the space forming portion 15 is located below the punch 32 of the element removing device 30.

That is, in the embodiment, the length of the punch 32 of the element removing device 30 in the chain conveying direction is the same as the length of the space 16 of the chain 10.

When the chain 10 is stopped, the cylinders 47a of the first positioning device 40 and the second positioning device 50, the piston 47b of the cylinder 57a, and the piston 57b are contracted. Therefore, the piston 47b is spaced apart from the first actuating bar 42 and the second actuating bar 52. Thereby, the first positioning member 41 and the second positioning member 51 advance by the respective compression springs 46b and the compression springs 56b.

At this time, as long as the element rows of the chain 10 are in the correct position, the claws 45 of the first positioning member 41 and the claws 55 of the second positioning member 51 respectively protrude to the upstream side and the downstream side of the chain 10 adjacent to the space forming portion 15. The side of the sprocket gap 14 is in the side.

Thereby, the first operating bar 42 of the first positioning device 40 approaches the first proximity switch 42a by a predetermined distance, and the second actuating bar 52 of the second positioning device 50 approaches the second proximity switch 52a by a predetermined distance. The first proximity switch 42a And the second proximity switch 52a outputs a signal, so that the chain line of the chain 10 is located at the correct position.

That is, when the first positioning member 41 of the first positioning device 40 advances to the first position and the claw 45 protrudes into the element gap 14, the first proximity switch 42a outputs a signal. When the second positioning member 51 of the second positioning device 50 is advanced to the first position and the claw 55 protrudes into the element gap 14, the second proximity switch 52 outputs a signal.

When the first positioning member 41 and the second positioning member 51 are advanced by the compression spring 46b and the compression spring 56b, the claw of the first positioning member 41 is located as long as the position of the chain line of the chain 10 is displaced to be in an incorrect position. 45. As shown in FIG. 5, the claws 55 of the second positioning member 51 abut against the rear end portion 13a of the fastener element 13, and do not move to the first position, so that the claws 45 and the claws 55 do not protrude into the fastener elements. In the gap 14.

Even if the element row of the downstream side of the chain 10 adjacent to the space forming portion 15 is at the correct position, the position of the element line of the upstream side of the chain 10 adjacent to the space forming portion 15 is shifted and is located at an incorrect position. , the first positioning member 41 does not move to the first position, and thus the second action bar 52 and the first action bar 42 is contacted so that the second positioning member 51 cannot move to the first position.

That is, when the first positioning member 41 is not in the first position, the second positioning member 51 is restricted from moving to the first position by the first action bar 42 and the second action bar 52.

Therefore, the first actuating bar 42 of the first positioning device 40 and the second actuating bar 52 of the second positioning device 50 do not approach the first proximity switch 43a and the second proximity switch 53a by a predetermined distance, and thus the first proximity switch 43a and The second proximity switch 53a does not output a signal.

When the state continues for a fixed period of time, a timer (not shown) of the control device 63 functions, the control device 63 drives the chain transfer device 20 for a short time, and the chain transfer device 20 transfers the chain 10 slightly in the downstream direction.

Thereby, as shown in FIG. 6, the claw 45 of the first positioning member 41 protrudes into the element gap 14 to position the element row on the upstream side of the space forming portion 15.

When the first actuating bar 42 approaches the first proximity switch 43a by a predetermined distance and the first proximity switch 43a operates, and outputs a signal, it is confirmed that the positioning of the element row on the upstream side adjacent to the space forming portion 15 has been performed.

When the first positioning member 41 is in the first position, the second positioning member 51 is not restricted by the first action bar 42 and the second action bar 52, so as to be movable to the first position.

However, as shown in FIG. 6, in the case where the position of the element row on the downstream side adjacent to the space forming portion 15 of the chain 10 is shifted, the claw 55 of the second positioning member 51 of the second positioning device 50 abuts. In the rear end portion 13a of the fastener element 13 on the downstream side of the chain 10 adjacent to the space forming portion 15, the claw 55 does not protrude into the element gap 14, and thus the second proximity switch 53a of the second positioning device 50 does not operate. Never output a signal.

Since the second proximity switch 53a does not output a signal after the first proximity switch 43a outputs a signal, that is, the undetected state continues for a fixed time, the timer (not shown) of the control device 63 functions, and the control device 63 operates for a short time. The chain transfer device 20 is driven, and the chain transfer device 20 transfers the chain 10 slightly in the downstream direction.

The element row of the upstream side of the chain 10 adjacent to the space forming portion 15 is held by the claws 45 of the first positioning member 41, and the element rows are not transferred in the downstream direction.

Therefore, as shown in Fig. 7, the fastener tape 12 on the downstream side of the fastener element row held by the first positioning member 41 is elongated in the fastener tape 12, and the downstream side of the chain 10 adjacent to the space forming portion 15 is formed. The chain line moves slightly in the downstream direction with respect to the claw 55 of the second positioning member 51, and the claw 55 projects into the element gap 14.

Thereby, the chain line of the downstream side of the chain 10 adjacent to the space forming portion 15 is positioned.

At the same time, the second proximity member 51 moves to the first position, and the second action bar 52 approaches the second proximity switch 53a by a predetermined distance, and the second proximity switch 53a operates to output a signal.

As shown in FIG. 7, if the element row of the upstream side adjacent to the space forming portion 15 of the chain 10 and the element line of the downstream side are respectively positioned, the first proximity switch 43a and the second proximity switch 53a respectively operate to output Signals are sent to control unit 63.

After stopping the chain transfer device 20, the control device 63 drives the chain transfer device 20 in the reverse direction for a short period of time, and transfers the chain 10 slightly in the upstream direction to relax the tension of the chain 10.

The control device 63 operates the element removing device 30 to remove the element row of the space forming portion 15 of the chain 10, thereby forming the space 16 as shown in FIG.

In this way, the element row of the upstream side of the chain 10 adjacent to the space forming portion 15 and the element row of the downstream side are positioned, and in this state, the element removing device 30 is operated to form the space 16, the space of the chain 10 and the space. The sprocket 13b and the sprocket 13c at the downstream end of the adjacent upstream end are not damaged, and do not remain in a half-defective state, so that the sprocket 13 in a good state can be retained to form the space 16.

In the embodiment, the first positioning device 40 and the second positioning device 50 are such that the claws 45 of the first positioning member 41 and the claws 55 of the second positioning member 51 protrude into the element gap 14 to position the chain rows, but The positioning method of the chain line is not limited to this.

For example, the chain of teeth is positioned by clamping the row of fasteners from above and below by means of a gripper.

In the embodiment, the biasing unit 46 and the biasing unit 56 are the compression coil spring 46b and the compression coil spring 56b, but are not limited thereto.

For example, the first positioning member 41 and the second positioning member 51 are pressed in the advancing direction by elongating the cylinder, and the first positioning member 41 and the second positioning member 51 are biased by the external force in the backward direction.

Moreover, the cylinder is combined with a compression coil spring.

Moreover, it is set as a tension coil spring.

In the embodiment, the holding unit 47 and the holding unit 57 are the cylinder 47a and the cylinder 57a, but are not limited thereto.

For example, the rack is attached to the first positioning member 41 and the second positioning member 51 using a pinion and a rack that are rotated by a motor.

Further, the nut is attached to the first positioning member 41 and the second positioning member 51 by using a feed screw and a nut that are rotated by a motor.

Moreover, using the cam and the cam follower, the cam follower is mounted on the first set The position member 41 and the second positioning member 51.

In the embodiment, the first detecting unit 43 and the second detecting unit 53 are the first proximity switch 43a and the second proximity switch 53a, but are not limited thereto.

For example, it is set as a contact switch such as a limit switch.

The positioning device of the present invention is not limited to the chain 10 in which the fastener elements 13 are attached to the fastener tape 12 by injection molding, and may be a chain that can be positioned by a gap between the adjacent fastener elements and a claw of the positioning member. For example, a chain including a fastener element formed of a monofilament into a coil shape or a zigzag shape can be applied to any type of chain.

10‧‧‧ zipper chain

12‧‧‧ zipper tape

13‧‧‧ sprocket

14‧‧‧ sprocket clearance

15‧‧‧ Space forming parts

40‧‧‧First positioning device

41‧‧‧First positioning member

41a‧‧‧One side of the chain transfer direction

41b‧‧‧Chapter transfer direction to the other side of the other side

42‧‧‧First action bar

43‧‧‧First detection unit

43a‧‧‧First proximity switch

44‧‧‧Guide Department

44a‧‧‧One side guide

44b‧‧‧Other side guide

45‧‧‧ claw

46‧‧‧ force unit

46a‧‧‧Spring Receiver

46b‧‧‧Compressed coil spring

47‧‧‧keeping unit

47a‧‧‧ cylinder

47b‧‧‧Piston

50‧‧‧Second positioning device

51‧‧‧First positioning member

52‧‧‧Second action stick

53‧‧‧Second detection unit

53a‧‧‧Second proximity switch

54‧‧‧Guidance Department

54a‧‧‧One side guide

54b‧‧‧Other side guide

55‧‧‧ claws

56‧‧‧Power unit

56a‧‧‧Spring Receiver

56b‧‧‧Compressed coil spring

57‧‧‧Holding unit

57a‧‧‧ cylinder

57b‧‧‧Piston

Claims (6)

A positioning device for a space forming device for a zipper chain, comprising: a first positioning device (40) for a chain of teeth on an upstream side of a chain transfer direction of a zipper chain (10) adjacent to a space forming portion (15) Positioning, the first positioning device (40) includes a first positioning member (41) that protrudes into the element gap (14) from a side of a direction at right angles to the chain transfer direction with respect to the chain (10) and Positioning; the second positioning device (50) positions the chain line of the downstream side of the chain transfer direction of the fastener chain (10) adjacent to the space forming portion (15), and the second positioning device (50) includes The second positioning member (51) protrudes into the element gap (14) from a side of a direction perpendicular to the chain conveying direction with respect to the chain (10), and is positioned; the first detecting unit (43), the detecting station The first positioning device (40) has positioned the fastener element row on the upstream side of the chain transfer direction of the fastener chain (10) adjacent to the space forming portion (15); the second detecting unit (53) detects the first The second positioning device (50) has been adjacent to the space forming portion (15) of the zipper chain (10) Positioning the chain line on the downstream side of the chain transfer direction; and controlling means (63) for detecting the movement by the first detecting unit (43) and the second detecting unit (53), thereby removing the zipper The element removing device (30) of the element row of the space forming portion (15) of the chain (10) operates. A positioning device for a space forming device for a zipper chain according to claim 1, wherein the first positioning member (41) has a claw (45), and the first positioning member (41) is by a claw (45) locating to the fastener element gap (14) of the fastener element row on the upstream side of the chain transfer direction adjacent to the space forming portion (15) of the fastener chain (10) for positioning, the first detecting unit (43) Detecting that the claw (45) of the first positioning member (41) has protruded into the element gap (14), The second positioning member (51) has a claw (55) which is a chain adjacent to the space forming portion (15) by projecting the claw (55) into the fastener chain (10). Positioning is performed in a sprocket gap (14) of the sprocket row on the downstream side of the transfer direction, and the second detecting unit (53) detects that the claw (55) of the second positioning member (51) has protruded into the sprocket In the gap (14). The positioning device of the space forming device of the zipper chain of claim 2, wherein the first positioning member (41) protrudes into the first position and the claw in the sprocket gap (14) across the claw (45) (45) moving in a second position spaced apart from the sprocket (13), the second locating member (51) projecting into the first position and the claw (55) in the sprocket gap (14) across the claw (55) Moving in a second position spaced apart from the sprocket (13), and providing a restriction device that limits movement of the second positioning member (51) to the first position, and at the first positioning member (41) After moving to the first position, the second positioning member (51) is moved to the first position. The positioning device of the space forming device of the zipper chain of claim 3, wherein the limiting device comprises a first action bar (42) mounted on the first positioning member (41) and mounted in the second positioning a second action bar (52) of the member (51), and when the first positioning member (41) is not in the first position, the second action bar (52) abuts against the first action bar (42), thereby limiting The second positioning member (51) is moved to the first position, and when the first positioning member (41) is in the first position, the second positioning member (51) is movable to the first position. A positioning device for a space forming device for a fastener chain according to claim 4, wherein a first force applying unit (46) is disposed, and the first positioning member (41) is provided Moving the force toward the first position; and the first holding unit (47) moves to the second position and holds the first positioning member (41) against the urging force of the first urging unit (46) Acting with the state of releasing the hold, and providing a second force applying unit (56) for moving the second positioning member (51) toward the first position; and a second holding unit (57), The second positioning member (51) is operated between a state in which the second positioning member (51) is moved to the second position against the urging force of the second urging unit (56) and is held and released. The positioning device of the space forming device of the zipper chain according to any one of claims 1 to 5, wherein the first positioning member (41) and the second positioning member (51) are in a zipper chain ( 10) has a plurality of claws (45, 55) spaced apart in the direction of the transfer, and protrudes into the element gap (14) through the plurality of claws (45, 55), and the adjacent two claws (45, 55) Hold one chain tooth (13).