TWM643755U - Lower portion material ejection device of punch press - Google Patents

Abstract

The present invention relates to a lower part jacking device of a punching machine, comprising: a machine table; a table set on the machine table, and having a table top and an ejection channel passing through the table top; a swing arm, which is arranged on the machine table so as to be swingable between the upper dead point position and the lower dead point position; On the machine table, there is a clamping portion corresponding to the second ejector rod, and the clamping portion can move between a clamping position and a release position; thereby, when the swing arm is at the top dead center position, the first ejector rod pushes against the second upper rod portion of the second ejector rod and protrudes from the table surface of the table, and the clamping portion of the clamping unit clamps the second ejector rod at the clamping position.

Description

The lower jacking device of the punch press

The present invention relates to a punching machine, in particular to a lower part jacking device of a punching machine.

The punching machine applies pressure to the metal material to make it plastically deform to obtain the required shape and precision, so as to complete the processing of parts in the automobile industry, machinery industry and light industry.

Referring to Fig. 1, it shows the sectional state of the lower part of the punch press. It is provided with a plate 12 at the lower end 111 of the machine platform 11. The plate 12 is used to bear a workpiece (not shown in the figure). By this, when the machine platform 11 is executing the stamping process, it will drive a swing arm 13 to swing between a top dead center and a bottom dead center through a linkage mechanism (not shown in the figure). When the swing arm 13 swings to the top dead point, it will drive the ejector rod 14 through Go out this platform 12, and push away this workpiece and break away from this platform 12, take this workpiece conveniently by this, when this swing arm 13 swings to bottom dead point, can drive ejector rod 14 to descend and retract into this platform 12 inside.

However, because the ejector rod 14 must keep passing through the table plate 12, the workpiece can be conveniently taken. Therefore, the linkage mechanism must stop when driving the swing arm 13 to the top dead point, and start the linkage mechanism after taking the workpiece. Accordingly, the linkage mechanism must be repeatedly stopped and started, which will cause short service life and high maintenance costs.

The purpose of the present invention is to provide a lower material jacking device of a punching machine, which mainly improves the service life and reduces the maintenance cost.

In order to achieve the above-mentioned purpose, the present invention is a lower part jacking device of a punching machine, comprising: a machine platform; a disc, which is arranged on the machine platform, and has a top and an ejection channel passing through the top; a swing arm, which can be arranged on the machine platform so as to swing between an upper dead center position and a lower dead center position; a material ejector unit, which includes a first ejector rod and a second ejector rod. The first upper rod part, the second ejector rod passes through the ejection tunnel, and has a second lower rod part against the first upper rod part, and a second upper rod part opposite to the second lower rod part; and a clamping unit, which is arranged on the machine table and has a pair of clamping parts corresponding to the second ejector rod, and the clamping part can move between a clamping position and a release position; thereby, when the swing arm is at the top dead center position, the first ejector rod pushes against the second upper rod of the second ejector rod part protrudes from the table top of the platform, and the clamping part of the clamping unit clamps the second ejector rod at the clamping position.

The effect of the new model is that: when the swing arm is driven by a linkage mechanism at the top dead center position, the swing arm drives the second ejector rod to protrude from the table top. At this time, the clamping unit is controlled to move so that the clamping part is at the clamping position to clamp the second ejector rod, so that the second upper rod part of the second ejector rod remains protruding from the table surface, so as to push the workpiece on the table away from the table surface, so as to facilitate taking the workpiece. The keeping of the second upper rod protruding from the table is achieved by controlling the clamping unit rather than stopping the linkage mechanism. Therefore, the linkage mechanism can avoid repeated stop and start, effectively increase the service life and reduce maintenance costs.

Preferably, the machine table has a pair of guide passages corresponding to the ejection channel, and the first ejector rod of the ejector unit can displaceably pass through the guide passages.

Preferably, the swing arm has a pivot portion pivotally arranged on the machine table and a swing portion connected to the pivot portion, and the first lower rod portion of the first ejector rod is pivotally connected to the swing portion.

Preferably, the machine table has two positioning side parts and a guide side hole located below the table, and the clamping unit includes two clamping cylinders respectively located on both sides of the second ejector rod. Each clamping cylinder has a cylinder body fixed on the positioning side part and a piston rod that can be telescopically arranged on the cylinder body.

Preferably, the lower ejecting device of the punch press further includes a linkage mechanism, which is arranged on the machine table and drives the swing arm to swing between the upper dead center position and the lower dead center position.

2 to 6, the embodiment of the present invention provides a lower punching device, which is mainly composed of a machine 20, a plate 30, a swing arm 40, a jacking unit 50, and a clamping unit 60, wherein:

This machine table 20 has two positioning side parts 21, two guiding side holes 22 positioned between the two positioning side parts 21, and a guiding channel 23 positioned below the guiding side hole 22; A second connecting rod 73 connected to one end of the first connecting rod 72 , a third connecting rod 74 connected to one end of the second connecting rod 73 , and a rotating shaft 75 pivotally arranged on the machine table 20 and connected to one end of the third connecting rod 74 .

The platform 30 is disposed on the machine platform 20 and has a top 31 and an ejecting tunnel 32 passing through the top 31 .

The swing arm 40 can swing between a top dead center position (as shown in FIG. 8 ) and a bottom dead center position (as shown in FIG. 5 ).

The ejector unit 50 includes a first ejector rod 51 and a second ejector rod 52. The first ejector rod 51 can be displaced up and down on the guide channel 23 of the machine table 20, and has a first lower rod portion 511 pivotally arranged on the swing portion 42 of the swing arm 40, and a first upper rod portion 512 opposite to the first lower rod portion 511 and exposed to the guide channel 23. The second ejector rod 52 is passed through the ejection of the platform 30 The tunnel 32 has a second lower rod portion 521 abutting against the first upper rod portion 512 , and a second upper rod portion 522 opposite to the second lower rod portion 521 and exposed to the platform 31 by being pushed against.

The clamping unit 60 is located on the machine platform 20 and has a pair of clamping parts corresponding to the second ejector rod 52. The clamping part can move between a clamping position (as shown in Figure 9) and a release position (as shown in Figure 6); The piston rod 612 of the body 611 has the clamping portion 6121 at one end, and the clamping portion 6121 is displaceably disposed in the guide side hole 22 .

The above is the structure and configuration description of the main components of this creation embodiment. As for the use and function of this creation, the description is as follows.

As shown in Figure 2 and Figure 7, the eccentric wheel 71 of the linkage mechanism 70 is controlled to rotate an angle, so that the first connecting rod 72, the second connecting rod 73, the third connecting rod 74, and the rotating shaft 75 are linked. 8), and then drive the first ejector rod 51 to move upwards, and the first ejector rod 51 displaced upwards then pushes against the second ejector rod 52 to move upwards synchronously, so that the second upper rod portion 522 of the second ejector rod 52 protrudes from the table surface 31 of the table 30. At this time, the clamping unit 60 is controlled to move, so that the two piston rods 612 are displaced in the direction of the second ejector rod 52, so that the clamping portion 6121 of the piston rod 612 is moved from the release position (as shown in Figure 6). Move to the clamping position (as shown in Figure 9), and then clamp the second ejector rod 52 so that the second upper rod portion 522 of the second ejector rod 52 remains protruding from the table top 31 of the table 30, so that the workpiece 91 on the table 30 is pushed away from the table 31, so as to facilitate taking the workpiece 91.

In addition, referring to FIG. 9 and FIG. 10 , when the second upper rod portion 522 of the second ejector rod 52 protrudes from the table top 31 of the table 30 and is clamped by the clamping portion 6121 of the clamping unit 60 at the same time, the linkage mechanism can still keep actuating and will not drive the second ejector rod 52 to descend and retract into the interior of the table 30. Accordingly, the second upper rod portion 522 of the second ejector rod 52 remains protruding from the table top 31 through the The control of the clamping unit 60 is not achieved by controlling the linkage mechanism to stop. Therefore, the linkage mechanism can avoid repeated stop and start, effectively improve the service life and reduce the maintenance cost.

It is worth mentioning that after the workpiece 91 on the table 30 is taken, the clamping unit 60 is controlled to move so that the clamping portion 6121 moves from the clamping position (as shown in FIG. 8 ) to the release position (as shown in FIG. 6 ), so that the second ejector rod 52 is no longer clamped by the clamping unit 60, and the second ejector rod 52 can be displaced downward and lean against the first ejector rod 51 to wait for the next linkage.

11: machine 111: lower end 12: table plate 13: arm swing 14: ejector rod 20: machine 21: Locating the side 22: Guide side hole 23: Guidance channel 30: table plate 31: Mesa 32: ejection channel 40: arm swing 41: Pivot 42: swing part 50: Topping unit 51: The first ejector rod 511: The first lower shaft 512: The first backswing 52: Second ejector rod 521: The second lower part 522: Second upper pole 60: clamping unit 61: clamping cylinder 611: Cylinder 612: piston rod 6121: clamping part 70: linkage mechanism 71: Eccentric wheel 72: The first connecting rod 73: Second connecting rod 74: The third connecting rod 75: Shaft 91: Processing parts

Figure 1 is a partial sectional view showing the current sectional state of the lower part of the punch press; Fig. 2 is a perspective view of an embodiment of the present invention, showing the state of the relative positions of the machine table, the plate and the linkage mechanism; Fig. 3 is a partial left side view of Fig. 2; Fig. 4 is a partial right side view of Fig. 2; Fig. 5 is the sectional view of Fig. 3 line segment 5-5; Figure 6 is a partial enlarged view of Figure 5; Fig. 7 is an actuation schematic diagram of the embodiment of the present invention, showing the actuation state of the linkage mechanism; Fig. 8 is the actuation intention of the embodiment of the present invention, showing the state of the swing arm at the top dead center position; Fig. 9 is a partially enlarged view of Fig. 8; Fig. 10 is a schematic diagram of the operation of the embodiment of the present invention, showing the state where the clamping unit clamps the second ejector rod and the swing arm is at the bottom dead center.

20: machine

21: Locating the side

23: Guidance channel

30: table plate

31: Mesa

32: ejection channel

40: arm swing

41: Pivot

42: swing part

50: Topping unit

51: The first ejector rod

511: The first lower shaft

512: The first backswing

52: Second ejector rod

521: The second lower part

522: Second upper pole

60: clamping unit

Claims (5)

A lower jacking device for a punch press, comprising: one machine; A disc, which is set on the machine table, has a top and an ejection channel running through the top; A swing arm, which can swing between a top dead center position and a bottom dead point position, is arranged on the machine table; A material ejector unit, including a first material ejector rod and a second material ejector rod, the first material ejector rod has a first lower rod part arranged on the swing arm, and a first upper rod part opposite to the first lower rod part, the second material ejector rod is passed through the ejection tunnel, and has a second lower rod part against the first upper rod part, and a second upper rod part opposite to the second lower rod part; and A clamping unit is arranged on the machine table and has a clamping part corresponding to the second ejector rod, and the clamping part can move between a clamping position and a release position; Thereby, when the swing arm is at the top dead center position, the second upper rod portion of the first ejector rod that pushes against the second ejector rod protrudes from the table surface of the table, and the clamping portion of the clamping unit clamps the second ejector rod at the clamping position. The lower ejecting device of the punch press according to claim 1, wherein the machine table has a pair of guide passages corresponding to the ejection channel, and the first ejector rod of the ejector unit can displaceably pass through the guide passage. The lower ejecting device of the press according to claim 1, wherein the swing arm has a pivot mounted on the machine table and a swing connected to the pivot, and the first lower rod of the first ejector rod is pivotally connected to the swing. The lower ejecting device of a punch press according to claim 1, wherein the machine table has two positioning side parts and a guide side hole located below the table, and the clamping unit includes two clamping cylinders respectively located on both sides of the second ejector rod. Each clamping cylinder has a cylinder body fixed on the positioning side part and a piston rod that can be telescopically arranged on the cylinder body. The lower material jacking device of the punch press according to claim 1, wherein the lower material jacking device of the punch press further includes a linkage mechanism, the linkage mechanism is arranged on the machine table, and drives the swing arm to swing between the upper dead center position and the lower dead center position.

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