Movable positioning and material supporting structure in bending die

Abstract

The utility model discloses a movable positioning and material supporting structure in a bending die, which relates to the field of metal plate bending, comprises a material supporting and positioning block with an irregular polygonal longitudinal section, a rotating shaft in the middle of the material supporting and positioning block, a limiting pin below the material supporting and positioning block and a material supporting block bracket, and is positioned on the opposite side of a bending female die at the position of a lower die of the bending die. The material supporting block bracket is fixed on the lower template; the material supporting and positioning block comprises a material supporting block main body and a horizontal extending part, the front end of the horizontal extending part is a material supporting end with a notch, and the material supporting and positioning block is connected to the material supporting block support through a rotating shaft; and during mold opening, the material supporting positioning block is limited by the limiting pin. One side of the metal profile is placed on the upper surface of the bending female die, and the other side of the metal profile abuts against a material supporting end notch of the material supporting positioning block. According to the structure, interference between the bending punch and the material supporting structure is avoided through the limiting pin and the rotating shaft structure, the placing stability of a metal plate is improved through the shape design of the material supporting positioning block, and the size precision of the metal plate is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of metal plate bending, in particular to a movable positioning and supporting structure in a bending die. Background Art

[0002] The stamping and bending of metal sheets is one of the important processes in metal profile processing, which directly affects the production efficiency and quality of the products. Under the existing working conditions, sometimes due to the requirements of the bending position, after the workpiece raw material is placed in the work station, the center of gravity is biased toward the outside of the bending die, which can easily cause the workpiece raw material to be unstable and tilt to one side. The existing solution is to set a fixed support structure or positioning block on the opposite side of the bending die. However, this structure often interferes with the falling bending punch, affects the stamping effect, and easily damages the support mechanism. This mold structure is designed to solve this problem and provides a movable support and positioning structure. Utility Model Content

[0003] The utility model aims to provide a movable positioning and supporting structure in a bending die, so as to solve the problem mentioned in the background technology that the supporting structure provided interferes with the stamping punch.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted is as follows: a movable positioning and supporting structure in the bending mold, which is composed of a supporting positioning block with an irregular polygonal longitudinal section, a rotating shaft in the middle of the supporting positioning block, a limiting pin below the supporting positioning block and a supporting block bracket, and the supporting block bracket is fixed on the lower template. The movable positioning and stripping structure is located on the opposite side of the bending die of the lower mold position of the bending mold; the supporting positioning block includes a supporting block body and a horizontal extension part, and the front end of the horizontal extension part is a supporting end with a notch, which can accurately position the raw material of the workpiece to be bent; the supporting positioning block is connected to the supporting block bracket through a rotating shaft, and the supporting positioning block can rotate around the rotating shaft when the mold is closed, and the shape of the supporting positioning block is fixed by the limiting pin when the mold is opened. Before closing the mold, one end of the workpiece raw material is placed on the upper surface of the bending die, and the other end is pressed against the notch of the supporting end of the supporting positioning block.

[0005] Specifically, the height of the support end is the same as the bending die on the other side of the mold.

[0006] Preferably, in order to ensure the shape of the support and positioning block when the mold is opened, the mass of the support and positioning block body exceeds 1.5 times the mass of the horizontal extension part.

[0007] Preferably, the limiting pin is outer-mounted with a protective sleeve, and the material of the protective sleeve is hard plastic or synthetic rubber.

[0008] As a further improvement, the limit pin can be replaced by a fixed block fixedly connected to the support block bracket.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] This positioning and movable supporting structure avoids the interference between the bending punch and the supporting structure by setting the limit pin and the rotating shaft. The shape design of the supporting positioning block increases the stability of the placement of the workpiece raw material, so that the bending part of the workpiece is accurately positioned and the precision is controllable, which effectively improves the dimensional accuracy of the processed product. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Attached Figure 1 This is a simplified structural diagram of the embodiment of the utility model in the mold opening state;

[0012] Attached Figure 2 This is a simplified structural diagram of the embodiment of the utility model in the mold closing state;

[0013] Attached Figure 3 The top and side views of the bent product.

[0014] In the figure, 1-support positioning block, 2-rotating shaft, 3-support block bracket, 4-limit pin, 5-lower template, 6-metal sheet, 7-bending die, 8-upper template, 9-compression spring, 10-pressing plate, 11-bending punch, 12-support end. DETAILED DESCRIPTION

[0015] The present invention will be further explained and illustrated below in conjunction with the accompanying drawings and embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0016] Example 1: Please refer to Figure 1 and Figure 2 , a movable positioning and material support structure in a bending mold, which is composed of a material support positioning block 1, a rotating shaft 2 in the middle of the material support positioning block, a limiting pin 4 under the material support positioning block and a material support block bracket 3, and the material support block bracket 3 is fixed on the lower mold plate 5. The movable positioning and material removal structure is located on the opposite side of the bending die 7 at the lower mold position of the bending mold; the longitudinal section of the material support positioning block 1 is an irregular polygon, which includes a material support block body and a horizontal extension part extending from the front end, and the front end of the horizontal extension part is a material support end 12 with a notch, and the notch supports one end of the workpiece raw material. The mass of the material support positioning block body is 1.8 times the mass of the horizontal extension part; the material support positioning block 1 is connected to the material support block bracket 3 through the rotating shaft 2, and can rotate around the rotating shaft 2 when the mold is closed, and the shape of the material support positioning block 1 is fixed by the limiting pin 4 when the mold is opened. Before closing the mold, one side of the metal sheet 6 is placed flat on the bending die 7, and the other side is pressed against the notch of the material support end 12 of the material support positioning block 1.

[0017] The shape of the product after bending is as follows Figure 3 shown.

[0018] Embodiment 2: In order to ensure the positioning accuracy and reduce the replacement frequency of the positioning pin 4, a protective sleeve is connected to the outer surface of the limiting pin 4 in this embodiment, and the material of the protective sleeve is hard plastic; in addition, the position of the limiting pin 4 can also be replaced by a fixed block fixedly connected to the support block bracket 3, and its shape and size are similar to the limiting pin. The other settings of the positioning and stripping structure are the same as those in the embodiment.

[0019] The working steps of installing the bending die of this structure are:

[0020] (1) Figure 1 As shown, in the mold open state, the metal sheet 6 to be bent is placed on the bending die 7, and the other end of the metal sheet 6 is against the stripping end of the support positioning block 1. The weight of the right side of the rotating shaft 2 of the support positioning block is greater than the protruding part, so the metal sheet 6 is lifted to a horizontal state.

[0021] (2) Figure 2 As shown, the upper die of the bending die moves downward, and the pressure plate 10 tightly presses the metal sheet 6 under the action of the compression spring 9, and the bending punch 11 continues to move downward to complete the bending action. At the same time, the bending edge of the metal sheet 6 rotates downward to drive the support positioning block 1 to rotate around the rotating shaft 2, so that the support positioning block 1 is in a left-tilted state, and the main body of the support positioning block is separated from the limit pin 4.

[0022] (3) After the bending operation is completed, the upper die of the mold rises, the pressure plate 10 is reset under the action of the compression spring 9, and the upper die returns to the open state. The main body of the support positioning block returns to its original position under the action of the right counterweight and contacts the limit pin 4 again.

[0023] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary, but not restrictive, and the scope of the present invention is defined by the appended claims rather than the above explanations and descriptions, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. At the same time, any figure mark in the claims should not be regarded as limiting the claims involved.

[0024] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A movable positioning and supporting structure in a bending mold, comprising a supporting positioning block (1) having an irregular polygonal longitudinal section, a rotating shaft (2) in the middle of the supporting positioning block, a limiting pin (4) below the supporting positioning block and a supporting block bracket (3), wherein the supporting block bracket (3) is fixedly connected to a lower mold plate (5), characterized in that: The movable positioning and stripping structure is located on the opposite side of the bending die (7) at the lower die position of the bending die; the support positioning block (1) comprises a support block body and a horizontal extension portion, the front end of the horizontal extension portion is a support end with a notch, and the notch is used to support one end of the workpiece raw material; the support positioning block (1) is connected to the support block bracket (3) through a rotating shaft (2), and it can rotate around the rotating shaft (2); when the mold is opened, the shape of the support positioning block (1) is fixed by a limit pin (4), and before the mold is closed, one end of the workpiece raw material is placed on the upper surface of the bending die (7), and the other end is supported at the notch of the support end of the support positioning block (1).

2. A movable positioning and supporting structure in a bending die according to claim 1, characterized in that: The height of the support end is the same as that of the bending concave die (7) on the other side of the mold.

3. A movable positioning and supporting structure in a bending die according to claim 1, characterized in that: The mass of the support block body exceeds 1.5 times the mass of the extension portion.

4. A movable positioning and supporting structure in a bending die according to claim 1, characterized in that: The limiting pin (4) is outer-mounted with a protective sleeve, and the material of the protective sleeve is hard plastic or synthetic rubber.

5. A movable positioning and supporting structure in a bending die according to claim 1 or 4, characterized in that: The limiting pin (4) can be replaced by a fixed block fixedly connected to the support block bracket (3).

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