JPS588107A - Direction setter in button attaching machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a direction setting device for setting a button in a predetermined direction in a button attaching machine for attaching a directional button to clothing fabric.

Normally, a button attaching machine supplies buttons and rivets sent from a shade to a crimping die and a crimping punch by a reciprocating button mechanism, and the buttons and rivets are interposed between the crimping die and the crimping bunch. It is designed to be crimped onto worn clothing fabric.

If the button has no directionality, you can simply push the button along the guide*; however, if the surface has directional characters, symbols, patterns, etc., push the button in the specified direction. must be set towards. Conventionally, as a direction setting mechanism that can determine the direction of the button in this way, the button is rotated in the guide groove while pushing it with a button, and the tab formed on the back side of the button head is attached to the button. Japanese Patent Application Laid-Open No. 52-6 discloses a device that supplies a button to a positioning head in a fixed direction by stopping the button, and orients the button in a predetermined direction by rotating the positioning column of this head by a fixed angle.
The orienting means of this prior art device, shown in No. 0740 KIll, connects a pinion through a coupling element such as a positioning post, and drives this pinion by a rack reciprocated by an air cylinder. That's what I do. Since the above position setting pillar has the role of a crimping die, a large impact is applied during the crimping operation.
Displaced in the vertical direction or rotational direction. The above-mentioned coupling is indispensable in order to absorb the displacement of the position setting column when the button is crimped and prevent it from being transmitted to the pinion. However, when using a coupling like this,
There is a drawback that it is difficult to achieve accuracy in the rotation angle of the position setting column because of the backlash of the coupling itself. Also, since rotational force, bonding force, and impact force are frequently applied to the coupling elements, backlash becomes even greater. Furthermore, if a shock is frequently applied to the position setting column, the bearing portion may be deformed and rotation may become impossible. Furthermore, since a rack and pinion mechanism is used, the stroke of the rack to rotate the pinion by a predetermined angle is relatively large, which not only requires a cylinder with a correspondingly large stroke, but also requires positioning. The time required will also be longer.

The present invention eliminates the above-mentioned drawbacks, and aims to provide a direction setting device for a button mounting machine that can obtain a stable and accurate rotation angle and can set the direction at high speed with a small cylinder.

The present invention will be described below based on embodiments shown in the drawings.

1 is a guide member provided on the frame 2; 3 is a caulking portion provided at the front end of the cough frame 2; 4 is the guide member 1;
5 is a groove 6 of the guide member 1.
It is a button that is fitted into the. The button B supplied from the shade 4 to the groove 6 of the guide member 1 is pushed by the button 5 and supplied onto the caulking part 3. While moving to the caulking part 3, the peripheral edge of the button B appears on the inner surface of the friction part IIt7 and the button is rotated, and the tab 8 on the button head is locked to the button 5, and the button B is rotated at that position. is determined and supplied onto the caulking section 3 as is. Various means for feeding the button in a certain direction are known, and these well-known means may be used in the present invention. Details of the crimping WA3 are shown in FIGS. It is shown in

Reference numeral 9 is a daiho-ruda with a frame length of 2 km, and has a hollow part 10 inside.

The lower end of the caulking die 11 is attached to this die holder 9 with a screw 12.
is fixed by. A finger holder 3 is slidably and rotatably fitted into the caulking die 11. A gear portion 14 is formed on the outer periphery of this finger holder 3.

As shown in FIG. 3, seven rack parts 13' are integrally formed at the upper end of the finger holder 3.
A pair of grooves IS formed in the 15 fingers 6.1
6 is fitted and pivotally supported on the 7 rack portion 13 by a pin 17. An inwardly directed protrusion 16' is formed on the upper part of the cough finger 6.16 (on the lower surface of this protrusion 16').
1 taper surface 18, and an engagement groove 1 facing in the direction of lateral force on the front surface.
s is formed.

A coil spring 20 is wound around the fourth finger 16.16 and the seventh rack portion 13, and the cough spring 20 biases the finger 16.11i in the closing direction. The finger holder 13 is urged upward by a spring 42.

A driving mechanism 21 is provided on the die holder 90 side. The drive mechanism 21 has screws 22 on the frame 2.
The adjustment sleeve 24 is rotatably fitted into a cylindrical holder 23 fixed to the cylindrical holder 23. Wrinkle adjustment sleeve 24
A clamp 25 is formed at the upper end, and a ring 2 is formed at the lower end.
6 is fixed, and the holder 23 is sandwiched between the 7 langes 25 and the ring 26, thereby regulating vertical movement.

The outer part of the adjustment sleeve 24 has locking holes 27a, 27b, 27c at predetermined intervals as shown in FIG.
, 27d are formed, and a recessed hole 28a is formed at a position shifted upward or downward with respect to the scissor locking hole at the same interval as this locking hole.
, 28b, 211c, and 28d are formed. The pin 31, which is slidably inserted into the case body 29 fixed to the holder 23 and is biased in the direction of the adjustment sleeve 24 by a spring 30, is inserted into the locking holes 2Ta to 27dK so that the pin 31 locks into the locking holes 2Ta to 27d. A knob 32 is fixed to the rear end of this pin 31, and the lock can be released by holding this knob 32 and pulling out the pin 31.Furthermore, the holder 23 is biased with a spring. A pawl plunger 34 equipped with a pawl 33 is attached, and the adjustment sleeve 24 is positioned by engagement between the tool #33 and the recessed holes 28a to 28d. A stopper 35 extending from the center is fixed.

A rotary shaft 37 is arranged inside the adjustment sleeve 24 via a bearing 36 . A layered gear 38 is fixed to the upper end of the rotating shaft 31 and meshes with the finger holder 13 and the gear portion 14. A swing lever 43 is fixed to the lower end of the rotating shaft 37, and the swing lever 43Km is fixed to the lower end of the rotating shaft 37.
The four pistons 39- of the air cylinder 39 attached to the frame 2 are connected. Further, a cam 40 is fixed to the rotating shaft 31 by a key 41, and this cam 40 is adapted to engage with the stopper 35.

Next, the effect will be explained. The peripheral edge of the button B, which has been positioned in one direction and supplied to the caulking part 3 by the pusher 5 as described above, fits into the engagement groove 1s of the finger 16°16 and is cylinderized by the finger 16°16. Ru. If there is no need to change the direction of button B, continue the tightening operation.

The crimping operation is performed by omniscient means, that is, by lowering the holder holding the chain and the punch, and by pressing down the finger holder 13 with the holder. To! ! &, the finger 1116 is released, the clamp on the button B is released, the button is lowered onto the crimping die 11, and the button B and the stud are swaged together on the crimping die 11.

If you need to change the direction of the button, use knob 32 (4th
The position of the stopper 35 is adjusted by pulling out the pin 31 from the locking hole 27a, holding the ring 26 in your hand, and rotating the adjustment sleeve 24 to lock the pin 31 in the next locking hole 27b. Move 90°. After the button B is supplied to the crimping part 3 and the button 5 retreats from the crimping part 3, the cylinder 39
When the piston barrel 39a is moved in the retracting direction, the cam 40 rotates together with the rotating shaft 37 in the counterclockwise direction in FIG. That is, the rotating shaft 31 is rotated to the left by a predetermined angle from the state shown in FIG. 4, this rotation is transmitted to the finger holder ISK via the gear 38 and the gear portion 14, and the button B is rotated 90 degrees to change the direction.

Similarly, when the bottle 31 is locked in the locking hole 270, the button B
When the bottle 31 and the locking hole 27d are engaged, the button B is rotated 270@, respectively. The number and spacing of the locking holes are arbitrary and are not limited to those shown. 1Il
The larger the radius of the fan-shaped gear 38 is compared to the radius of the finger holder 130, the smaller the rotation angle of the rotating shaft 37 will cause the finger holder 13 to rotate. The ball plunger 34 and the recessed holes 28a to 28d are for automatically determining the locking position of the locking holes 27a to 27d and the bottle 31.
Rotate 4 and set the "C?C rule" to the concave holes 28a to 28dKI.
The depressed position is the locking position between the locking holes 27a to 27d and the bottle 31.

In the above embodiment, the fan-shaped gear 38 may be a circular gear. Further, instead of the cam 4OK, a simple protrusion may be provided integrally with the rotating shaft 37 or separately.

As described above, according to the present invention, the gear part 14 is formed on the outer periphery of the finger holder 13, and the gear 38 meshing with this gear part 14 is driven by a constant angle, thereby rotating the finger holder 13 by a constant angle. Accurate power transmission is achieved through the meshing of the gears, and accurate direction setting is possible.If an impact is applied to the crimping die IIK due to the crimping operation, the gear part 14 and the gear 38wJK [slipping in the vertical direction will occur, resulting in an impact. Therefore, the impact is not transmitted to the drive mechanism, and since the caulking die 11 to which the impact is applied is fixed, the rotation of the finger holder 13 is not adversely affected and smooth rotation is always possible. Also, since the button is held by a pair of fingers (16°16) and rotates, the button does not shift during rotation, allowing for stable direction setting.

Furthermore, the larger the number of teeth of the fan-shaped gear 38 relative to the gear portion 14, the smaller the length of the lever 43. Since the finger holder 13 can be rotated with a smaller twist and a smaller stroke, a smaller cylinder is used. There is an effect that it can be done.

[Brief explanation of drawings]

Fig. 1 is a side view showing an embodiment of the present invention, Fig. 2 is a plan view of the same as above, Fig. 3 is a sectional view taken along the line i-l in Fig. 1, and Fig. 4 is a sectional view taken along the line W-IV in Fig. 5. 5 is a bottom view of FIG. 3. 11... crimping die, 13... finger holder, 14
...Gear portion, 16...Finger, 21...Drive mechanism, St4...Bin, 35...Stopper, 38...
Gear, 3.9...Air cylinder, B90. Button patent applicant Yoshida Kogyo Co., Ltd.

Claims (1)

[Claims] In a button attaching machine which positions a button in a certain direction and feeds it onto a fixed crimping die and sews it onto the fabric, the crimping die IIK
It is slidable and rotatably inserted and has fingers 11i and 1g at the upper end for clamping the button B on the caulking die 11, and the outer circumference #/
C* Button attachment consisting of a drive mechanism including a finger holder 13 in which a wheel portion 14 is formed, a gear that meshes with the KIE gear portion, a means for regulating the rotation angle of the gear, and a cylinder 311 that drives a pin gear 38. A direction setting device on a machine.