JPH0239697Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a shearing machine equipped with a right-angled L-shaped blade, and more specifically, it has a function to adjust the clearance between the punch (upper blade) and die (lower blade). The present invention relates to a shearing machine equipped with a shearing machine. Generally, in a shearing machine that cuts a plate by moving a punch up and down relative to a die, the clearance between the die and the punch must be adjusted depending on the thickness and material of the plate. Particularly in the case of a shearing machine having a right-angled L-shaped blade as described above, the clearance between the punch and the die must be adjusted in each of the two right-angled directions. Conventionally, this type of shearing machine has a configuration in which the above-mentioned clearance is adjusted by appropriately moving a table equipped with a die, or as shown in, for example, Japanese Patent Application Laid-Open No. 49-92687. Although the configuration is to adjust the wedge member of the vertical guide portion, the configuration is complicated and unsatisfactory.

This idea was made in view of the problems of conventional shearing machines as described above. An embodiment of this invention will be described in detail below with reference to the drawings. In the following description, "front and rear" refers to the direction corresponding to the left side in FIGS. 1 and 2 as front, and the direction corresponding to the right side as rear, and "left and right".
means the direction corresponding to the upper side in Figure 1 is the right direction,
The direction corresponding to the lower side will be referred to as the left.

In the frames 1 and 1' of the shearing machine,
A table is provided with a first lower blade 17 in the left-right direction and a second lower blade 19 in the front-rear direction perpendicular to the first lower blade 17, and the frame 1, 1'
A ram 3 is mounted on the frame 1 so as to be swingable in the vertical direction, and the frames 1 and 1' are provided with a longitudinal adjustment device 5 for adjusting the position of the ram 3 in the longitudinal direction, and a longitudinal adjustment device 5 for adjusting the position in the horizontal direction. A left and right adjustment device 7 is installed. The fore-and-aft adjustment device 5 includes an eccentric shaft 9;
It consists of a sector gear 11, a pinion gear 13, a handle 15, etc., and as is clear from the figure, the eccentric shaft 9 rotates to the rear of the frames 1, 1' at approximately the same height as the lower blades 17, 19. It is freely supported. This eccentric shaft 9 rotatably supports a ram 3 having a first upper blade 21 and a second upper blade 23 mounted orthogonally to each other, and one end of the ram 3 is connected to the frame 3 via a bearing member 25. The other end is rotatably supported by a frame 1', and a sector gear 11 is attached to the other end.

The sector gear 11 meshes with a pinion gear 13 that is integrally attached to the handle 15.

Therefore, when the handle 15 is rotated in an appropriate direction, the sector gear 11 and the eccentric shaft 9 are rotated in an appropriate direction. Therefore, the ram 3 will move in the front-back direction. The left and right adjustment device 7 also includes an elastic member 27, a slide pad 29, and a screw member 3.
1. Arm 33, connecting rod 59, drive arm 35, sector gear 37, pinion gear 39, handle 4
The elastic member 27 is attached to the ram 3 at one end via a support member 43 provided with a pin, and at the other end via a support member 45 similarly provided with a pin. It is attached to frame 1' with a nut. The elastic member 27 is an example of a biasing device that biases the ram 3 in one direction, and is provided so as to be elastically loaded in the left-right direction. That is, the ram 3 is always urged leftward by the elastic member 27. Blocks 47 are attached to a plurality of locations in the front-rear direction of the frame 1', and a screw member 31 is screwed into each block 47 in the left-right direction. The tip of each screw member 31 appropriately contacts a slide pad retainer 49 that is slidably fitted into a hole formed in the frame 1'. Each slide pad presser 49 holds a slide pad 29 that is in sliding contact with a plate 51 fixed to the ram 3. Further, the screw member 31
A shaft portion 53 is formed on the shaft portion 53, and the arm 33 is integrally attached to this shaft portion 53. Therefore, when the arm 33 is rotated in an appropriate direction, the screw member 31
moves forward and backward in the left and right directions. Therefore, Ram 3 is
The position is adjusted in the left-right direction via the slide pad presser 49 and the slide pad 29.

A shaft 55 to which a sector gear 37 and a drive arm 35 are integrally attached is rotatably supported by the frame 1'. The drive arm 35 and each arm 33 are interlocked and connected via a pin 57 and a connecting rod 59, respectively. Further, the sector gear 37 meshes with a pinion gear 39 that is integrally attached to a handle 41 that is rotatably supported on the frame 1'. Therefore, the handle 41
When rotated in an appropriate direction, the sector gear 37,
The arm 33 is rotated in an appropriate direction via the drive arm 35 and the connecting rod 59.

In the above configuration, the position of the ram 3 can be adjusted in the front-rear direction by rotating the handle 15 in an appropriate direction, and the position of the ram 3 can be adjusted in the left-right direction by rotating the handle 41 in an appropriate direction. . Therefore, the clearance can be easily adjusted by simply rotating the handles 15, 41.

As can be understood from the above description of the embodiments, the gist of the invention is as stated in the claims for utility model registration. , second
A ram 3 equipped with first and second upper blades 21 and 23 orthogonal to a table equipped with lower blades 17 and 19
The rear part of the ram 3 has an eccentric shaft rotatably supported at both ends by the left and right frames 1, 1' at almost the same height as the first lower blade 17. It is rotatably supported on the eccentric part 9.

Therefore, according to the present invention, the vertical movement of the ram 3 is a rotational movement about the eccentric shaft 9, and the distance between the first lower blade 17 and the first upper blade 21 is such that the first upper blade 21 is When the plate material is sheared closest to the first lower blade 17 and at approximately the same height as the eccentric shaft 9, it is at its minimum. Therefore, the shearing accuracy is good, and the distance between the first lower blade 17 and the first upper blade 21 can be easily adjusted by simply rotating the eccentric shaft 9. It's extremely simple.

In addition, in the present invention, the ram 3 includes the second lower blade 1
The second upper blade 23 is always urged by the urging device 27 so as to move in the direction away from the ram 3, and one side of the ram 3 is
It is in sliding contact with a slide pad 29 that is provided so as to be able to adjust its position in the left and right direction against the urging force of the slide pad 29.

Therefore, the distance between the second lower blade 19 and the second upper blade 23 can be easily adjusted by simply adjusting the position of the slide pad 29 and the operation, and the distance between the second lower blade 19 and the second upper blade 23 can be easily adjusted. The component force is received by the slide pad 29, so that the distance between the second lower blade 19 and the second upper blade 23 does not increase.

[Brief explanation of the drawing]

Figure 1 is a plan cross-sectional view of this invention. Figure 2 is a side view of this invention. Explanation of symbols representing the main parts of the drawings, 1,
1'...Frame, 3...Ram, 7...Right and left adjustment device, 9...Eccentric shaft, 17...First lower blade, 19...
...Second lower blade, 21...First upper blade, 23...Second upper blade.

Claims (1)

[Scope of utility model registration request] For a table equipped with a first lower blade 17 in the left-right direction and a second lower blade 19 in the front-back direction perpendicular to the first lower blade 17, a second lower blade 19 corresponding to the first lower blade 17 and second lower blade 19 is provided. A shearing machine is provided with a ram 3 equipped with a first upper blade 21 and a second upper blade 23 that can be raised and lowered, and the rear part of the ram 3 is installed between the left and right frames 1 and 1' of the shearing machine.
The second lower blade 17 is provided rotatably supported on an eccentric portion of an eccentric shaft 9 whose both ends are rotatably supported on the left and right frames 1, 1' at approximately the same height as the first lower blade 17. A biasing device 27 is provided that constantly acts to move the ram 3 in the direction in which the second upper blade 23 separates from the ram 3, and a slide pad 29 that is in sliding contact with one side of the ram 3 is applied to the biasing force of the biasing device 27. A shearing machine characterized in that one frame 1' is equipped with an adjustment device that can freely adjust its position in the left and right directions.