JPH0321838Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a frame structure for a press machine such as a press brake, and more particularly to a frame structure that allows fine adjustment to be easily made during assembly.

Conventionally, the frame of a press machine was generally assembled at a manufacturing factory and then shipped with the centering adjusted by welding or bolting. There was nothing to consider.

This resulted in inconveniences such as the need for large vehicles for transportation and the large amount of man-hours required for centering adjustment at the user's site.

The present invention was devised for the purpose of solving the above-mentioned disadvantages of conventional press machines, and preferred embodiments thereof will be described in detail below with reference to the drawings.

The hydraulic press 1 illustrated in FIGS. 1 and 2 is a press brake, and is equipped with C-shaped side frames 5, 5 on both sides of a machine base 3. (left side) At the upper part, fluid pressure cylinders 7, 7, are attached.

A ram 13 is connected to the lower ends of the piston rods 9, 9 of the above-mentioned fluid pressure cylinders 7, 7 via ram coupling mechanisms 11, 11, and a movable tool 15 attached to the lower surface of the ram 13 is connected to the machine base 3. The bending operation is performed by approaching and leaving the attached fixed tool 17.

As is clear from FIG. 1, the ram 13 is narrow in the height direction at both left and right ends, wide in the middle in the height direction, and has four locations: on the left and right near the top end, and on the left and right near the bottom end. , front-back direction (left-right direction in Figure 2)
A pair of free rollers 19 are provided.

The free roller 19 near the top end is
It is rotatable by pinching an upper guide block 21 provided protruding from the side frame 5 to the inside of both side frames 5, and the one near the lower end is provided protruding from the front of the side frame 5 (to the left in FIG. 2). Lower guide block 2 provided perpendicular to the bracket 23
5, it can be rotated freely by holding the front and back.

Therefore, the vertical movement of the ram 13 is as described in 12 above.
The free rollers 19 are connected to the upper guide block 2.
1 and the lower guide block 25, it moves up and down while maintaining a vertical posture relative to the machine stand 3 and fixed tool 17.

As is clear from FIG. 2, the machine base 3 described above has a pair of tapered members 31 and a tightening bolt on the upper and lower arcuate portions 29 of the front end of the bracket 27 provided at the lower front (left side in FIG. 2) of the side frame 5. 33 so that the position can be freely adjusted.

Furthermore, the frame structure consists of left and right side frames 5.
The inner frame plate 35 and the outer frame plate 37 are appropriately joined by a suitable number of connecting members 39 to form a box shape, and the above-mentioned fluid pressure cylinder 7 is provided in a part of the box shape.

As is clear from FIGS. 2, 3, and 4, above the side frame 5, there is a front positioning pin 41 passing through the front connecting member 39, and a rear positioning pin 41 passing through the rear connecting member 39. 43 is provided.

Front positioning pin 41 and rear positioning pin 43
The connecting member 39 is connected to the flange portions 45 and 47.
The rotating position is regulated by positioning keys 49, 49.

There is a circular protrusion 51 inside the front positioning pin 41.
In this embodiment, holes 57 provided in the left and right side walls 55, 55 of the tank unit 53 are inserted into the circular protrusions 51 instead of the connecting members, and the holding plate 59 is inserted into the circular protrusion 51.
It is fixed at

A truncated conical projection 61 forming a part of the fine adjustment coupling device is provided inside the rear positioning pin 43, and is loosely fitted into a rather large hole 63 provided in the left and right side walls 55, 55 of the tank unit 53. 5th
A plurality of tapered members 65 forming a part of the fine adjustment coupling device shown in the figure are connected to the hole 63 and the truncated conical protrusion 6.
It is inserted between 1 and 1.

The rear positioning pin 43 is also pressed against the inside of the side wall 55 by the pressing plate 67.

The taper member 65 described above is inserted separately by a bolt 69 between the hole 63 provided in the side wall 55 and the truncated conical protrusion 61 to perform a wedge function.

Thus, the front and rear holes 57 and 63 provided in the side wall 55 of the tank unit 53 and the front and rear positioning pins 41
Even if there is a machining error between and 43, by adjusting the engagement between the truncated conical protrusion 61 provided on the rear positioning pin 43 and the tapered member 65, alignment without causing deviation can be achieved.

After the alignment described above, the side wall 5 is
5 is fixed to the inner frame plate 35.

In addition, as shown in FIG. 2, the side frame 5
There is also a connecting beam 73 at the bottom of the rear (right side in Figure 2).
is provided.

As shown in FIG. 6, this connecting beam member 73 is provided with a flange portion 77 having circular projections 75 at both ends, and is inserted into a hole provided in the inner frame plate 35 and bolted with bolts 79 to the inner frame plate. It is fixed to 35.

As can be understood from the above description of the embodiments, the present invention has a frame structure of a press machine in which the left and right side frames 5, 5 are connected by a connecting beam material, and each side frame 5, 5
A front positioning pin 41 is provided at the front part of the holder, and a rear positioning pin 43 is provided at the rear part, and the front positioning pin 41 or the rear positioning pin 43 is
A conical projection 6 formed on the rear positioning pin 43 or the front positioning pin 41 and fitted into a hole 57 provided at the front or rear part of the connecting beam material.
1 is inserted into a hole 63 provided at the rear or front part of the connecting beam material, and between this hole 63 and the projection 61, a plurality of tapered members 65 for fine adjustment up and down and front and back can be freely adjusted in position. It is something that occurs through the intervention of

With the above configuration, according to the present invention, one of the front and rear sides of the connecting beams of the side frames 5, 5 is fitted and supported by the positioning pin 41, and the other side is supported by the conical projection 61 of the positioning pin 43. Since the position can be finely adjusted up and down and forward and backward by a plurality of tapered members 65 interposed between the connecting beam and the hole 63, the relationship between the connecting beam and the left and right side frames 5, 5 can be adjusted at the time of assembly. can be finely adjusted, and the frame can be assembled with high precision.

[Brief explanation of the drawing]

Figure 1 is a front view of a press machine implementing the present invention, Figure 2 is a side view of the same, Figure 3 is a plan view of the same,
FIG. 4 is an enlarged plan view of the left side frame, FIG. 5 is a front view of the fine adjustment device, and FIG. 6 is an explanatory diagram of the connecting portion of the connecting beam. (Explanation of symbols representing main parts of drawings) 1...Press machine, 5...Side frame, 3
5... Inner frame plate, 37... Outer frame plate, 41... Front positioning pin, 43... Rear positioning pin, 61... truncated conical projection, 65... Taper member, 73... Connecting beam material.

Claims (1)

[Scope of utility model registration request] The frame structure of the press machine is made by connecting the left and right side frames 5, 5 by a connecting beam,
A front positioning pin 41 is provided at the front of each side frame 5, 5, and a rear positioning pin 4 is provided at the rear.
3, and the front positioning pin 41 or the rear positioning pin 43 is provided by fitting into a hole 57 provided in the front or rear part of the connecting beam material, and the rear positioning pin 43 or the front positioning pin 41
A conical protrusion 61 formed in the above-mentioned shape is inserted into a hole 63 provided at the rear or front part of the connecting beam, and between this hole 63 and the protrusion 61, there are a plurality of holes for fine adjustment up and down and back and forth. A frame structure for a press machine, characterized in that a tapered member 65 is interposed in a position adjustable manner.