KR20040042419A - Clutch device for snap machine - Google Patents

Abstract

PURPOSE: A clutch apparatus of a snap is provided to safely and precisely cut off a power after a single work of a punch regardless of the operation timing of a clutch pedal, promote the convenience of work, reduce the defective proportion of the product and protect a worker from the danger of a safety accident. CONSTITUTION: The clutch apparatus includes a clutch body(10), a clutch pin(12) mounted within a groove(11) of the clutch body(10), a clutch lever(13) arranged in a hinge structure using a pin(14) at one side of the clutch body(10), a spring, a clutch rod(17) and a clutch pedal(16). The lower end is connected to the clutch rod(17) through a link pin(19) and a return spring(21) is connected to an extended part at one side of the lower end to be elastically supported in a downward direction. The upper end is concatenated to the peripheral surface of the clutch body(10) and interlocked with the clutch pin(12) to thereby be turned over in one side or returned to the original position. A clutch safety lever(23) is provided halfway in length with a ridge to push up an actuating part(18) of the clutch lever(13).

Description

Clutch device for snap machine

The present invention relates to a clutch device of a snapper, and more particularly, to include a clutch device in which a power is automatically cut off after a single operation of a punch, regardless of the timing of operation of the clutch pedal, to safely and accurately perform an intermittent action. The present invention relates to a clutch device of a snapper, which improves the convenience of work, eliminates the risk of safety accidents, and lowers the defective rate at the time of work.

In general, snaps are machines used to mount snap buttons on products such as clothing, tents, shoes, watches, and the like.

Such a conventional snap device has been registered as a registered Utility Model Publication No. 20-0270976. Looking at its configuration briefly, as shown in Figure 8, the main body 100 is fixedly installed on the work object, the drive shaft 110 is rotatably assembled to the main body 100, and a pedal operation means including a drive shaft ( The clutch device 120 is assembled at one end of the 110 to transmit or block power, and the pulley 130 is rotated by a drive motor (not shown) and intermittently connected to the drive shaft 110 by the clutch device 120. And a crank device 150 which is assembled at the other end of the drive shaft 110 and transmits power up and down using the eccentric cam 140, and a punch 160 connected to the crank device 150 to vertically reciprocate. ) And an anti-rotation device 170 for holding the drive shaft 110 when the clutch device 120 is separated from the pulley 130.

Therefore, the pulley receiving the power from the driving motor side is continuously rotated, the rotational force of the pulley is intermittently transmitted to the drive shaft by the operation of the clutch device, the rotational force of the drive shaft is switched to the vertical reciprocating motion of the punch through the crank device The snap operation is performed by the operation of the punch.

As shown in Figs. 9 and 10, it shows here an operating state in which power is transmitted or cut off to the drive shaft by an intermittent action of the clutch device.

The clutch pin 12 is mounted in the groove 11 of the clutch body 10 to be elastically slidable along the axial direction, and the clutch lever 13 is disposed at one side of the clutch body 10 to clutch the clutch. It is to restrain the withdrawal of the pin 12, the clutch lever 13 has a lower end hinged to the pin 14, while one side is elastically supported by the spring 15, the restrained state of the clutch pin 12 The clutch pedal 16 and the clutch rod 17 which are interlockable with each other are disposed below the main body 100 so as to push the operation piece 18 of the clutch lever 13 upward. It is.

Therefore, in a state where the clutch pedal 16 is not operated, the clutch lever 13 pulled by the spring 13 is in close contact with the circumferential surface of the clutch body 10 to prevent the axial pull-out of the clutch pin 12. As a result, the clutch body 10 and the pulley 130 which are integrally rotated with the drive shaft 110 are not connected to each other, and the pulley 130 at this time continues to idle.

Stepping on the clutch pedal 16 for work, the clutch rod 17 is raised to push the operating piece 18 of the clutch lever 13, at this time the clutch lever 13 of the spring 13 When the force is pulled outward and at the same time the clutch pin 12 is pulled out in the axial direction and connected to the pulley 130, the rotational force of the pulley 130, the clutch pin 12 and the clutch body 10 It is transmitted to the drive shaft 110 through it can be performed a snap operation.

After the snap operation is performed as described above, when the worker releases the clutch pedal 16, the clutch lever 13 is returned to its original position and the clutch pin 12, which has been returned once, is pushed back to the clutch body 10 Since it is accommodated in the groove 11 of the, it is possible to cut off the power from the pulley (130).

However, such a conventional snap device has a problem of high risk of worker safety accidents or product defects associated with operation of the clutch device.

For example, the operator should operate the clutch pedal once and cut off the power from the continuously rotating pulley once to perform a snap operation, since the pulley rotates quickly even if you release the foot a little later after pressing the clutch pedal once. Since the punches are hit in succession, the risk of safety accident is very high, and in the case of inexperienced people, it is insufficient to meet the timing of stepping on the clutch pedal and performing one snap operation. There is a problem.

Accordingly, the present invention has been made in view of the above, and provides a clutch device capable of automatically turning off the clutch lever and turning off the power while operating in association with each rotation of the drive shaft, thereby operating the clutch pedal. Irrespective of the punch, the power can be cut off safely and accurately after one time of work, thereby improving the convenience of the work and reducing the defective rate of the product, especially to protect the workers from the risk of safety accidents. Its purpose is to.

The present invention for achieving the above object is a clutch body arranged on the drive shaft and rotatable together, a clutch pin mounted in the groove of the clutch body and elastically slides along the axial direction, the hinge structure through the pin on one side of the clutch body A clutch lever disposed to be configured to restrain the extraction of the clutch pin and a spring for elastically supporting the clutch pin in one direction, a clutch rod which is in contact with the clutch lever and pushes it upwards, and a clutch pedal for operating the clutch rod. In the clutch device, the lower end is connected to the clutch rod through a link pin, and a return spring is connected to the extension piece on one side of the lower end thereof to be elastically supported downward, and the upper end is connected to the circumferential surface of the clutch body to slide with the clutch pin. Can be flipped to one side or returned, , The jaw is formed characterized in that it further comprises the clutch safety lever which can be pushed over the operating part of the clutch lever.

In addition, the upper end of the clutch safety lever is characterized in that the roller which enables the rolling contact along the circumferential surface of the clutch body is mounted.

In addition, the vertical side of the protrusion forming the jaw is characterized in that the inclined surface for smooth contact interference with the operating piece.

1 is a front view showing a clutch device of a snap according to the present invention

Figure 2 is a side view showing the power off state in the clutch device of the snap according to the invention

3 is an enlarged view illustrating main parts of FIG. 2;

Figure 4 is a side view showing a power transmission state in the clutch device of the snap according to the invention

5 is an enlarged view illustrating main parts of FIG. 4;

6 is a front sectional view showing an arrangement relationship between a clutch pin, a clutch lever, and a clutch safety lever in a clutch device of a snap according to the present invention;

Figure 7 is a side cross-sectional view showing the operating state of the clutch lever and the clutch safety lever in the clutch device of the snap according to the invention

8 is a perspective view showing the overall structure of a conventional snapper

9 is a side view showing a state before operation of the clutch device in the snap of FIG.

10 is a side view showing a state after the operation of the clutch device in the snap of FIG.

<Explanation of symbols for main parts of drawing>

10: Clutch Body 11: Home

12: clutch pin 13: clutch lever

14: pin 15: spring

16: clutch pedal 17: clutch rod

18: Operation Part 19: Link Pin

20: extension 21: return spring

22: jaw 23: clutch safety lever

24: roller 25: inclined surface

26: pin spring

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a front view showing the clutch device of a snap according to the present invention.

As shown in FIG. 1, a main body 100 including a clutch device and the like is fixedly installed on a work table (not shown), and a driving shaft 110 for power transmission of a snap work is rotatable to the main body 100. It is assembled so as to be rotated by a clutch device 120 and a drive motor (not shown) for transmitting or blocking power to one side with respect to the drive shaft 110 and the drive shaft 110 and the clutch device 120 A pulley 130 that is intermittently connected is disposed, and on the other side, the punch is connected to the crank device 150 that transmits power up and down using the eccentric cam 140 and the crank device 150 to reciprocate up and down. 160 is disposed.

In addition, the snap of the present invention also includes a rotation preventing device 170 for holding the drive shaft 110 when the clutch device 120 is separated from the pulley 130.

Accordingly, the rotational force of the pulley 130 is intermittently transmitted to the drive shaft 110 by the intermittent action of the clutch device 120 in a state in which the pulley 130 is continuously rotating by receiving power from the driving motor side. At this time, the rotational force of the drive shaft 110 is switched to the vertical reciprocating motion of the punch 160 through the cam motion of the crank device 150, and thus one snap operation is performed by the operation of the punch 160.

Next, looking at the configuration and the operating state of the clutch device of the snap device provided in the present invention as follows.

2 and 3 show the power cut-off state in the clutch device of the snap according to the invention, Figures 4 and 5 show the power transmission state in the clutch device of the snap according to the present invention.

2 to 5, a clutch pin 12 that is elastically slidable along the axial direction is mounted in the groove 11 of the clutch body 10 which is arranged on the drive shaft 110 and rotates therewith. The clutch lever 10 is disposed on the circumferential surface of the clutch body 10 to restrain the tip of the clutch pin 12 while being in close contact with the radial direction perpendicular to the axial direction to restrain the pull out of the clutch pin 12. do.

Accordingly, the clutch pin 12, which is elastically supported to the outside by the inner pin spring 26 to be pulled out in the axial direction, is kept in the clutch body 10 without being released by the clutch lever 13. Since the binding with the pulley 130 is not made, the drive shaft 110 does not receive power from the pulley 130.

The clutch lever 13 has a lower end hinged to the pin 14 to be rotated around the shaft, and on one side the spring 15 is connected so that it is always subjected to the pulling force by the spring 15, It is possible to maintain the restraint state of the clutch pin 12 while being in close contact with the clutch body 10 side naturally.

In addition, a lower portion of the main body 100 is equipped with a clutch pedal 16 that can be operated by the operator foot, the clutch rod 17 is connected to the front end of the clutch pedal 16 at this time, the operator's operating force is clutch It can be transmitted to the lever 13 side.

In particular, in the present invention, a clutch interlocking action is prevented from being inaccurately caused by the misoperation of the clutch pedal 13, and thus a safety device, for example, clutch safety, that can facilitate work and pursue safety of the operator. The lever 23 is provided.

To this end, the clutch safety lever 23 is disposed in a position facing the clutch lever 13, the lower end is connected to the clutch rod 17 through the link pin 19 to be interlocked together, the lower end At one side of the extension piece 20 is integrally formed at the same time the end of the return spring 21 which is disposed at the bottom is connected to receive the elastic support in the downward direction.

In addition, the upper end of the clutch safety lever 23 is connected to the circumferential surface of the clutch body 10 so that it can be flipped or returned to one side while sliding with the clutch pin 12 at each rotation of the clutch body 10. The jaw 22 is formed in the middle of the length so that the operation piece 18 of the clutch lever 13 can be supported from below.

In addition, the upper end of the clutch safety lever 23 in contact with the circumferential surface of the clutch body 10 is equipped with a roller 24, thereby maintaining a smooth contact with the clutch body 10 and at the same time clutch pin The clutch safety lever 23 can be easily flipped back through the rolling motion of the roller 24 even in the case of interference by the contact with 12.

In addition, the vertical side of the protruding portion of the jaw 22 formed on the clutch safety lever 23 is an inclined surface 25, so that the operating piece 18 is folded back to the clutch safety lever 23 and then returned. It is possible to return to the original state while eliminating contact interference with).

Therefore, the operating state of the clutch device of the snap device according to the present invention configured as described above, in particular the operating state of the clutch safety lever in detail as follows.

First, as shown in FIG. 3, when the clutch pedal 16 is not operated, the clutch pin 13 pulled by the spring 15 is in close contact with the circumferential surface of the clutch body 10 while the clutch pin 16 is engaged. By preventing the axial pull-out of the (12), the clutch body 10 and the pulley 130 which rotates integrally with the drive shaft 110 is not connected to each other, so that the pulley 130 continues to idle do.

Next, as shown in FIG. 5, when the clutch pedal 16 is pressed down for work, the clutch rod 17 is pushed up while pushing the clutch safety lever 23 upward, and thus the clutch safety lever ( Since the 23 moves upward to push the operating piece 18 of the clutch lever 13 by using the jaw 22, the clutch lever 13 at this time is turned outward while winning the force of the spring 15. do.

As shown in FIG. 6, the clutch pin 12 in which the restrained state by the clutch lever 13 is released is connected to the pulley 130 while being axially drawn out, and at the same time, the rotational force of the pulley 130 is coupled to the clutch pin. Since it is transmitted to the drive shaft 110 through the 12 and the clutch body 10, it is possible to perform a one-time snap operation through the operation of the crank device 150 and the vertical movement of the punch 160.

After the snap operation is performed as described above, when the operator releases the clutch pedal 16, the clutch lever 13 and the clutch safety lever 23 are returned to their original positions by the restoring force of the respective springs 15 and 21. Returning to the clutch lever 13, the distal end portion of the clutch lever 13 is again in close contact with the circumferential surface of the clutch body 10, and thus the clutch pin 12, which has been returned once, is pushed inward by the clutch lever 13 again and the clutch body 10 Since it is accommodated in the groove 11 of the), it is separated from the pulley 130 with this, and thus it is possible to cut off the power from the pulley 130.

On the other hand, when the timing of releasing the foot from the clutch pedal 16 is not matched with the timing at which the one snap operation is completed, that is, the worker releases the paw late from the clutch pedal 16 held down even though the one-time snap work is finished. In this case, the clutch lever 13 can be automatically returned by the operation of the clutch safety lever 23.

To this end, as shown in FIG. 7, when the clutch lever 13 is not folded back to its original position at the time when the one-time snapping operation is completed, the clutch pin 12 of the clutch body 10 is turned over. ) Continues to rotate past the end of the first revolution, and proceeds continuously and pushes the upper roller 24 of the clutch safety lever 23 which is in close contact with or close to the peripheral surface of the clutch body 10 in the rotational direction. When the clutch safety lever 23 is flipped off by the clutch pin 12, the operation piece 18 of the clutch lever 13 supported by the jaw 22 of the clutch safety lever 23 becomes the jaw. At the same time, the clutch lever 13 is brought into close contact with the circumferential surface of the clutch body 10 by the force of the spring 15, so that the clutch pin 12, which is returned to the wheel once again, is the clutch lever (at this time). 13) of the clutch body 10 while pushing inward It is stored in the groove 11, and thus can be disconnected from the pulley 130 to cut off the power from the pulley 130.

The automatic return of the clutch lever 13 by the clutch safety lever 23 as described above is performed when the operator misoperates the clutch pedal 16, that is, when the user presses the pedal pedal 16 hard or releases the clutch pedal 16. When the foot is released from the clutch pedal 16, the clutch rod 17 and the clutch safety lever 23 descend to return to the initial operation state. Here, the clutch safety lever 23 is easily returned due to the low interference because the inclined surface 25 of the jaw 22 touches the working piece 18 during the lowering process.

Therefore, it is possible to perform normal snap operations again through the above process.

As described above, in the present invention, even when the clutch pedal is mishandled due to the carelessness or lack of concentration of the operator, the interlocking action of the clutch device is automatically performed, so that the snap operation can be performed accurately and safely.

As described above, the present invention provides a clutch device capable of automatically turning off the clutch lever by operating in conjunction with the rotation of the drive shaft to cut off the power, thereby reducing power after one operation of the punch regardless of the operation timing of the clutch pedal. There is an effect that can be cut safely and accurately, and thus even the inexperienced person has the advantage of improving the convenience of work and lowering the defective rate of the product, and above all, to protect the worker from the risk of safety accident There is an advantage to this.

Claims (3)

Clutch body 10 arranged on the drive shaft and rotatable together, clutch pin 12 mounted in the groove 11 of the clutch body 10 and slidably elastically along the axial direction, one side of the clutch body 10 In the hinge structure through the pin 14 in the clutch lever 13 to restrain the pull out of the clutch pin 12 and the spring 15 to support it elastically in one direction, the clutch lever 13 in contact with the upper In the clutch device of the snapper comprising a clutch rod 17 for pushing the clutch and a clutch pedal 16 for the operation of the clutch rod 17, The lower end is connected to the clutch rod 17 through the link pin 19, and at the same time, the return spring 21 is connected to the extension piece 20 on one side of the lower end so as to be elastically supported downward, and the upper end is the clutch body 10. It is connected to the circumferential surface of the clutch pin 12 and can be folded or returned to one side, and a jaw 22 is formed in the middle to push the operating piece 18 of the clutch lever 13 upward. Clutch device of the snap characterized in that it further comprises a clutch safety lever (23). 2. The clutch device according to claim 1, wherein a roller (24) is provided at the upper end of the clutch safety lever (23) to enable rolling contact along the circumferential surface of the clutch body (10). 2. The clutch device of a snap according to claim 1, wherein the vertical side of the protrusion forming the jaw (22) is an inclined surface (25) for smooth release of contact interference with the operating piece (18).