JPS6239863Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a mold support device in a press machine such as a press brake that bends a workpiece (metal plate, etc.) between an upper mold and a lower mold. A mold support device for a press machine, in which a block member interposed between the mold support member and the upper surface of the mold support member is moved in and out using an adjustment screw to finely adjust the amount of deflection of the upper mold with respect to the lower mold. It is related to.

Generally, in a bending device such as a press brake,
It is known that the longitudinal center portion of the upper mold bends upward relative to the support portions at both ends thereof during bending of the workpiece.

The causes of the deflection of the upper mold include, for example,
This is thought to be due to the fact that the upper mold is suspended by supporting molds at both ends, and that during bending, it receives a uniform reaction force from the lower mold and the work to be bent.

As mentioned above, if the center part of the upper mold bends during the bending process, the bending angle at the center part of the workpiece becomes larger than the bending angle at both ends, resulting in the so-called sagging phenomenon, which causes the product to fail to meet product standards. The problem arises that the product cannot be manufactured. For this reason, conventionally, a wedge-shaped block member is driven in advance between the mold support and the upper mold according to the amount of deflection of the upper mold, so that the center part of the upper mold is lower than both ends thereof. Adjustment means are provided to deflect it downward.

Conventionally, the adjustment means described above moves a wedge-shaped block member interposed between the apron and the mold support in the front-rear direction or the left-right direction. In the case of a configuration in which a wedge-shaped block member is moved in the front-rear direction, it is difficult to move the block member significantly due to the wall thickness of the apron, so the angle of the slope formed on the block member is made relatively large. This requires a large acting force when moving the block member, and fine adjustment is quite difficult. Furthermore, due to the large angle of the inclined surface, a relatively large component of force acts during the bending process of the plate material, making it difficult to make precise adjustments when considering the backlash of the threaded portion.

Furthermore, in a configuration in which a wedge-shaped block member is moved in the left-right direction, the block member is moved by hitting it with a hammer or the like, so the block member is easily deformed and damaged, and fine adjustment is difficult.
Moreover, it is difficult to arrange the block members closely.

This device was devised to solve these conventional problems, and its purpose is to allow mold supports (mold support members) to be closely arranged and finely adjusted. It is an object of the present invention to provide a new mold support device that can be easily implemented even in conventional press machines.

Hereinafter, a preferred embodiment of this invention will be described based on the accompanying drawings.

FIG. 1 shows a schematic front view of a press machine 1,
This press machine 1 includes a lower mold 7 provided on a lower apron 3 via a mold support member 5, and above the lower mold 7 a plurality of mold supports attached to an upper apron 9. An upper mold 13 extending in the left-right direction is suspended via a member 11.

As shown in FIGS. 2 and 3, the upper mold 13 has a tapered surface 1 on the horizontal lower surface of the upper apron 9.
The mold support member 11 having a mold support member 11 is suspended via a fastener 17 and a fastening bolt 19, and between the lower surface of the upper apron 9 and the tapered surface 15 of the mold support member 11, A block member 21 for adjusting the amount of deflection of the upper mold 13 is interposed so as to be slidable in the left-right direction.

As shown in FIG. 1, the block members 21 are provided in a plurality of mold support members 11 arranged at predetermined intervals in the longitudinal direction (horizontal direction) of the upper mold 13. Each block member 21
An arbitrary position in the longitudinal direction of the upper mold 13 can be bent downward depending on the amount of insertion.

As shown in FIG. 3, the block member 21 has a lower surface 23 formed at the same inclination angle α as the tapered surface 15 of the mold support member 11, and an upper surface 23.
5 is formed horizontally so as to be parallel to the lower surface of the upper apron 9.

Further, the base end portion of the block member 21, that is, the third
In the figure, a flange portion 27 is integrally formed on the lower surface 23 side of the block member 21 at the left end portion thereof, and is bent in a direction perpendicular to the slope of the lower surface. A dimension scale 29 indicating the amount of insertion (intrusion amount) into the mold support member 11 is engraved on the side edge. Therefore, when the block member 21 is pushed in in accordance with the amount of deflection of the upper mold 13, the amount by which the block member 21 is pushed can be read.

The flange portion 27 of the block member 21 has
An adjustment screw 31 is provided for sliding the block member 21 along the tapered surface 15 of the mold support member 11.

The threaded portion 31a of the adjustment screw 31 is provided parallel to the tapered surface 15 of the mold support member 11 and the lower surface 23 of the block member 21, and is screwed into a screw hole formed in the mold support member 11. There is. An adjustment knob 33 is provided at the base of the adjustment screw 31. Therefore, when the adjustment knob 33 is rotated, the threaded portion 31a of the adjustment screw 31 moves in and out of the mold support member 11, and at the same time, the block member 21 also moves between the lower surface of the upper apron 9 and the mold support member. It slides along the tapered surface 15 of the member 11.

In this way, when bending a predetermined position of the upper mold 13, it can be easily and quickly done by operating the block member 21 provided at the position to be bent in the same manner as described above. .

Further, a tapered groove 35 is formed in the side wall of the mold support member 11 to accommodate the flange portion 27 of the block member 21.

Furthermore, a stopper bolt 39 is provided on the central side surface of the block member 21 and on the guide plate 37 adjacent to the mold support member 11 for fixing the block member 21 in a predetermined position. This stopper bolt 39 is slidably engaged along a long hole 41 formed in the guide plate 37.
By tightening the stopper bolt 39,
The block member 21 can be fixed at any position.

In the above embodiment, the structure of the block member 21 used to bend the upper mold 13 has been described in detail, but it goes without saying that it may also be used to bend the lower mold 7.

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 mold that has been stretched is attached to the apron of a press machine via multiple mold support members,
A block member that is long in the left-right direction is interposed between each mold support member and the apron. The lower surface of the block member is inclined with respect to the horizontal upper surface, and the block member is provided with a dimensional scale indicating the amount of penetration of the block member into the mold support member. Therefore, when the block member is moved in the left-right direction, it is possible to know the amount of intrusion into the mold support member, and also to know the vertical displacement of the mold support member with respect to the apron.

Further, an L formed at the base end of the block member
The letter-shaped flange is perpendicular to the lower surface, and the adjustment screw rotatably supported by the flange is provided parallel to the inclined lower surface of the block member and is screwed into the screw hole of the mold support member. Therefore, by rotating the adjustment screw, the block member can be slightly moved in the left and right directions with respect to the mold support member. Furthermore, this configuration allows it to be handled as a unit and is easy to assemble.

In the above structure, since the block member is moved in the left-right direction, unlike the front-back direction which is the thickness direction of the apron 9, the block member can be moved relatively large in the left-right direction, and the mold Even if the vertical adjustment amount of the member is relatively large, the angle of inclination of the lower surface of the block member can be made small. As a result, the vertical position of the mold support member can be finely adjusted.

In addition, since the adjustment screw is provided parallel to the bottom surface of the block member, when the block member is moved in the left-right direction by the adjustment screw, the bottom surface of the block member is always kept in contact with the top surface of the mold support member. Monkey. Therefore, no problems arise when finely adjusting the mold support member up and down with respect to the apron.

Furthermore, since the lower surface of the block member is inclined and the upper surface is horizontal, it can be easily brought into contact with the lower surface of the apron without any modification, and can be easily applied to conventional press machines. It is something.

Furthermore, since there is no need to hit the block members,
Block members and the like can be arranged more densely than before, and the accuracy of bending the plate material can be further improved.

Note that the present invention is not limited to the above-described embodiments, but can be implemented in other embodiments by making appropriate changes.

[Brief explanation of the drawing]

Figure 1 is a schematic front view of the press machine of this invention.
FIG. 2 is a partially enlarged cross-sectional view showing the attached state of the upper mold, and FIG. 3 is a vertical cross-sectional view taken along the line - in FIG. 2. Explanation of main symbols shown in the drawings, 3...
Lower apron, 5...Mold support member, 7...Lower mold, 9...Upper apron, 11...Mold support member, 13...Upper mold, 21...Block member,
23...Bottom surface, 27...Flange portion, 29...Dimension scale, 31...Adjustment screw.

Claims (1)

[Scope of utility model registration request] A mold 1 extends in the left-right direction on an apron 9 in a press machine via a plurality of mold support members 11.
A block member 21 long in the left-right direction is interposed between the apron 9 and each mold support member 11, and each block member 21
is provided so as to be slidable in the left-right direction, the lower surface 23 of the block member 21 is formed to be inclined with respect to the horizontal upper surface 25, and the block member 21 is provided with a dimensional scale indicating the amount of penetration into the mold support member 11. 29
At the same time, an L-shaped flange portion 27 formed at the base end of the block member 21 is attached to the lower surface 2.
3, and is rotatably provided on the flange portion 27. An adjustment screw 31 is provided parallel to the lower surface of the block member 21, and is screwed into a screw hole formed in the mold support member 11. A mold supporting device for a press machine, characterized in that the blocking member 21 is moved in and out between the apron 9 and the mold supporting member 11 by rotating the adjusting screw 31.