KR200200906Y1 - A crank shaft of power press - Google Patents

Abstract

The present invention relates to a power transmission device for a semiconductor component processing machine, and more particularly, to an eccentric cam formed in front of a crankshaft so that the lifting operation of the slide can be performed quickly and accurately.

In the conventional crankshaft, the connecting rod is coupled to the crank pin of the arm that is bent at the center of the rotating shaft, and the rotary motion of the arm is converted into linear motion by the connecting rod, thereby elevating the slide, so that the upper side of the connecting rod also rotates. As a result, problems such as significant flow are generated in the connecting rod and the slide.

Therefore, the present invention smoothly elevates the connecting rod 30 coupled to the bearing 31 by the eccentric rotation of the drive cam 22 formed eccentrically in front of the crankshaft 20, so that the semiconductor component processing machine 1 is operated. By minimizing the generated flow or vibration, it is possible to minimize the defective rate generated during the processing of semiconductor parts requiring precision, and at the same time, to significantly increase the rotation speed of the crankshaft 20 which receives the power of the eccentric drive cam 22. Since it can be maximized its productivity can maximize the external competitiveness of the semiconductor component processing machine (1).

Description

Power transmission device for semiconductor component processing machine {a crank shaft of power press}

The present invention relates to a power transmission device for a semiconductor component processing machine, and more particularly, to an eccentric cam formed in front of the crankshaft so that the lifting operation of the slide can be performed quickly and accurately.

In general, the power press for processing semiconductor parts is configured such that the slide is lifted by the connecting rod when the flywheel receiving the power of the motor rotates the electric wheel and the rotational force of the electric wheel rotates the crankshaft through the clutch. .

The crankshaft described above has a connecting rod coupled to the crank pin of the arm bent at the center of the rotating shaft, so that the rotational movement of the arm is converted into a linear movement by the connecting rod, thereby elevating the slide, so that the upper side of the connecting rod also rotates. As a result, problems such as significant flow are generated in the connecting rod and the slide.

Such a flow has been a major cause of increasing the defective rate during machining of semiconductor components requiring precision, and the rotational speed of the crankshaft cannot be increased by converting the rotational motion into a linear motion. Remarkably Degraded.

In addition, since the crankshaft is mainly manufactured by cutting a metal rod, in order to form an arm bent at the center of the rotating shaft as in the conventional crankshaft, a metal rod or a forging product having a large diameter must be used, so the purchase cost of raw materials increases and a considerable amount of cutting work is required. It took time, such as the closing.

The present invention was devised in view of the above problems, and its purpose is to prevent the flow of the connecting rod during the rotation of the crankshaft, and to increase the rotation speed to reduce the defective rate and increase the productivity of the semiconductor component processing machine. It is to provide a power transmission device.

Features of the present invention for achieving the above object, the flywheel 12 receiving the power of the motor 11 rotates the electric wheel 13 and the rotational force of the electric wheel 13 is the crankshaft 20 In the semiconductor component processing machine 1 in which the slide 40 is elevated by the connecting rod 30 when rotated, the crankshaft 20 in which the drive cam 22 is eccentrically formed in front of the rotating shaft 21 is processed. It is mounted in the front and rear directions from the upper side of the frame 10 of the machine 1, the rear of the rotary shaft 21 is coupled to the shaft hole (13a) of the electric wheel 13 is rotated, the drive cam in front of the rotary shaft 21 22 is inserted into the coupling hole of the bearing 31 mounted above the connecting rod 30 so that the eccentric rotational force of the drive cam 22 is connected to the connecting rod 30 and the link 41 to the slide 40. It can be achieved by a power transmission device of a semiconductor component processing machine characterized by lifting.

1 is a front view of a semiconductor component processing machine according to the present invention,

2 is a side cross-sectional view of a semiconductor component processing machine according to the present invention,

Figure 3 is an exploded perspective view illustrating an embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

1: semiconductor parts processing machine

10: frame

11: motor

12: flywheel

13: electric wheel

13a: shaft ball

20: crankshaft

21: rotating shaft

22: drive cam

30: connecting rod

31: Bearing

40: slide

41: link

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention for achieving the above object in detail as follows.

As shown in FIGS. 1 to 3, when the motor 11 mounted behind the frame 10 of the semiconductor component processing machine 1 rotates the flywheel 12, an electric wheel 13 connected by gears is rotated. As the rotational force of the transmission wheel 13 rotates the crankshaft 20, the connecting rod 30 and the slide 40 connected thereto are lifted.

Of course, the technical configuration of the semiconductor component processing machine 1 in which the slide 40 is elevated by the aforementioned power transmission system is a known technical idea. However, the most important feature in the configuration of the present invention is to prevent the flow of the connecting rod 30 and the slide 40 and stable by the crankshaft 20 in which the drive cam 22 is eccentrically formed in front of the rotating shaft 21 It is to be able to elevate.

That is, the crankshaft 20 is mounted on the upper side of the frame 10 of the semiconductor component processing machine 1 in the front and rear directions, and the crankshaft 20 is easily supported in a stable state by bearings. It can be rotated.

The rear of the rotating shaft 21 of the crankshaft 20 is coupled through the shaft hole (13a) which is drilled in the center of the electric wheel (13). Thus, the crankshaft 20 It is a system that is integrally coupled with the electric wheel 13 and rotated together.

A cylindrical drive cam 22 is eccentrically formed in front of the rotating shaft 21, and the drive cam 22 is inserted through a coupling hole of a bearing 31 mounted on an upper side of the connecting rod 30. have.

Therefore, when the driving cam 22 is eccentrically rotated, as the connecting rod 30 is elevated, the slide 40 connected to the link 41 is elevated.

The link 41 has a structure in which a bolt is integrally formed on the upper side of the sphere, the sphere is jointly coupled to the upper portion of the slide 40, and the bolt is screwed to the connecting rod 30 and slides. 40 and the connecting rod 30 is configured to be connected.

According to the present invention having the above-described configuration, when the driving cam 22 formed eccentrically in front of the crankshaft 20 rotates, the connecting rod 30 coupled thereto is smoothly slid by the eccentric rotation of the driving cam 22. Therefore, the flow of the connecting rod 30 and the slide 40 coupled thereto is prevented, thereby minimizing the defective rate generated during the processing of semiconductor components requiring precision, and at the same time, power is transmitted by the eccentric drive cam 22. Since the speed of rotation of the crankshaft 20 can be considerably faster, the productivity can be maximized.

In addition, since it is not necessary to form an arm or a crank pin bent at the center of the rotation shaft as in the conventional crankshaft, the production of the crankshaft 20 is very simple, which can significantly reduce labor cost and at the same time use a small diameter rod. Since the shaft 20 can be molded, a considerable material cost can be saved. There is this.

According to the present invention as described above, since the connecting rod 30 coupled to the bearing 31 is smoothly lifted and lifted by the eccentric rotation of the drive cam 22 formed eccentrically in front of the crankshaft 20, the semiconductor component processing machine ( Rotation of the crankshaft 20 receiving the power of the eccentric drive cam 22 while minimizing the defective rate generated during the processing of semiconductor components requiring precision by minimizing the flow or vibration generated during the operation of 1). Since the speed can be significantly faster, the productivity is maximized to maximize the external competitiveness of the semiconductor component processing machine (1).

Claims (1)

When the flywheel 12 receiving the power of the motor 11 rotates the electric wheel 13 and the rotational force of the electric wheel 13 rotates the crankshaft 20, the slide rod 40 is connected by the connecting rod 30. In the semiconductor component processing machine 1 in which the lifting and lowering is performed, the crankshaft 20 in which the drive cam 22 is eccentric in front of the rotating shaft 21 is moved from the upper side of the frame 10 of the semiconductor component processing machine 1. It is mounted in the rear direction, the rear of the rotating shaft 21 is coupled to the shaft hole (13a) of the electric wheel 13 is rotated, the drive cam 22 in front of the rotating shaft 21 is mounted on the connecting rod 30 above Power transmission of the semiconductor component processing machine, characterized in that the eccentric rotational force of the drive cam 22 is inserted into the coupling hole of the bearing 31 lifts the slide 40 connected by the connecting rod 30 and the link 41. Device.