JPH0224575Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a plate holding device, and more specifically, for example, the lower surface of an indenter of a plate holding device such as a shearing machine is connected with a single plate member, and the space between the indenter and the plate member is This relates to a plate holding device in which a bullet such as a urethane resin block is interposed, and its purpose is to disperse and reduce the surface pressure of the plate pressing force, and to prevent pressure marks on the workpiece plate material to be fixed. The purpose of this invention is to provide a plate holding device that does not cause this problem.

Conventionally, shearing machines have used a plate holding device that positions the workpiece plate at the processing position and pressurizes and fixes the workpiece plate to a table surface with a stationary tool attached below. In the case of soft materials such as non-metals or ferrous metals, or in the case of painted plates or polished steel plates, impressions remain on the product, resulting in a significant reduction in commercial value.

The present invention has been made to solve the above-mentioned disadvantages of the conventional device, and preferred embodiments will be described in detail below based on the drawings.

The example shown in FIG. 1 is a hydraulic type shearing machine 1, in which a workpiece is placed on a table 5 provided in a lower machine frame 3 beyond the lower blade 7 (see FIG. 4), and the upper machine A plurality of plate holding devices 11 provided downward from the frame 9
The plate material to be processed is fixed under pressure by the indenter 13, and the upper blade (not shown) is lowered toward the lower blade 7 to shear the plate material to be processed.

The plate holding device 11 includes an indenter 13 that is vertically movable, and each indenter 13 in each plate holding device 11
is the plate member 1 via the flanged bracket 15.
7 is supported. The plate member 17 extends over its entire length in the area where the plurality of plate holding devices 11 are arranged, and a band-shaped soft material 19 such as felt is attached to the lower surface of the plate member 17 by an appropriate means such as adhesive. be. Furthermore, the above flange bracket 1
In the center of 5, a bullet 21 made of urethane rubber, for example
is interposed between the indenter 13 and the plate member 17 to prevent abnormal curving of the plate member 17 when the indenters 13 of a large number of plate holding devices 11 do not move up and down synchronously, and fatigue failure due to repeated abnormal curving. 17 is protecting himself.

In the above configuration, pressure oil is supplied to the numerous plate holding devices 11 through the hydraulic piping 23 (see FIG. 2) provided in the upper machine frame 9, and the hydraulic cylinders 25
When the piston 27 is lowered against the return spring 29, the indenter 13 also lowers, and the strip-shaped soft material 19 on the lower surface of the plate member 17 presses and fixes the plate material to be processed on the table 5. At this time, the pressurizing area by the plate member 17 is larger than the pressurizing area by only the indenters 13 of the many plate pressers 11, and the pressure is applied via the belt-shaped soft material 19, and furthermore, Since the pressurized area is continuous and there are no seams, no impressions are created on the surface of the workpiece.

On top of that, as described above, a bullet 2 made of urethane rubber, for example, is mounted at the center of the flanged bracket 15.
1 is interposed between the indenter 13 and the plate member 17, even if one of the many plate holding devices 11 has a large sliding resistance and there is a difference in whether the vertical movement is faster or slower, the plate The member 17 will not break due to bending fatigue.

As can be understood from the above description of the embodiments, the gist of the present invention is as stated in the claims for utility model registration. A single plate member provided extending in the longitudinal direction of the lower blade over the entire length of the placement area of the holding device moves up and down relative to each indenter that is movably provided in the plurality of plate holding devices. It is supported as possible. A soft material is provided on the lower surface of the plate member, and an elastic machine is interposed between the plate member and each indenter.

Therefore, according to the present invention, when each plate holding device is operated and each indenter is lowered to press and fix the plate material to be processed on the table, the plate member is lowered to press and fix the plate material to be processed. This is the result. When each plate holding device is operated as described above,
All the indenters do not descend at the same time at the same speed, but with some height difference due to sliding resistance, but due to compression of the bullet, each indenter This means that some differences in height will be absorbed. In other words, although each indenter is connected via a plate member, when the indenters are lowered, they are not constrained to each other via the plate member, and each indenter can descend smoothly. It is. Also, when pressing and fixing the workpiece plate material, the pressure of each indenter is dispersed over a long plate member,
In addition, since the plate member is one piece and has no seams, impressions will not be formed even when the plate member is an aluminum plate or a painted plate.

[Brief explanation of drawings]

Fig. 1 is a front view of the shearing machine, Fig. 2 is a central sectional view of an embodiment of the plate holding device, Fig. 3 is an explanatory diagram of a plate member provided by connecting a number of plate holding devices, and Fig. 4 is It is an explanatory view of a side same as the above. DESCRIPTION OF SYMBOLS 11... Plate pressing device, 13... Indenter, 17... Plate member, 21... Bullet machine.

Claims (1)

[Scope of utility model registration request] A plurality of plate holding devices 11 mounted on the upper machine frame 9 located above the table 5 provided with the lower blade 7 are arranged in the longitudinal direction of the lower blade 7, and the arrangement area of the plurality of plate holding devices 11 is provided. The lower blade 7
One plate member 1 extending in the longitudinal direction of
A soft material 19 is provided on the lower surface of the plate member 17, and a soft material 19 is provided on the lower surface of the plate member 17. 17 and each of the indenters 13.