Self-adaptive compensation pressing die device of plate bending machine

Abstract

The utility model discloses a self-adaptive compensation pressing die device of a plate bending machine, and relates to the field of metal plate machining. The self-adaptive compensation die pressing device of the plate bending machine comprises an upper die unit and a lower die unit, the two sides of the middle of the upper die unit are sunken inwards, the lower die unit comprises a positioning sliding rail and a movable die plate, and the upper end of the movable die plate protrudes towards the middle and is matched with a sunken area of the upper die unit; an expansion joint is arranged between the two movable formworks, and the overturning amplitude of the two movable formworks towards the middle is adjusted in a self-adaptive mode through the expansion joint. According to the self-adaptive compensation die pressing device of the plate bending machine, different upper die units are replaced according to the to-be-bent concave amplitude, in the downward pressing process of the upper die units, the two sets of movable die plates are folded towards the middle under the action of the expansion joint to be matched with the concave area of the upper die units, and therefore the plate bending efficiency is improved. Therefore, the movable mold plate has the effect of self-adapting to the upper mold units with different sunken degrees, the mold cost is reduced, and meanwhile, the assembly procedure is reduced.

Description

Technical Field

[0001] This utility model relates to the field of metal sheet processing technology, specifically to an adaptive compensation die device for sheet bending machines. Background Technology

[0002] When bending metal sheets, bending machines are usually used. Traditional simple bending operations can be completed by directly using a flat-angle punch and a die to squeeze and press. However, for some sheets with special bending shape requirements, more complex dies are required.

[0003] However, in the traditional pressing process, different punches and dies need to be changed at the same time when the bending angle is different, which makes the overall bending operation more complicated and requires more mold costs. To solve the above problems, an adaptive compensation pressing device for sheet metal bending machine is provided. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an adaptive compensation die device for sheet metal bending machines. This solves the problem that in traditional die-pressing processes, different punches and dies need to be changed simultaneously when the bending angle is different, which makes the overall bending process more complicated and requires more die costs.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: an adaptive compensation die device for a sheet metal bending machine, comprising an upper die unit and a lower die unit, wherein the upper die unit has inwardly recessed sides in the middle, and the lower die unit includes a positioning slide rail and a movable template slidably disposed on the outer walls of both sides of the positioning slide rail, wherein the upper end of the movable template protrudes towards the middle to match the recessed area of ​​the upper die unit;

[0006] An expansion joint is provided between the two sets of movable templates. The two sets of movable templates adaptively adjust the flipping range towards the center through the expansion joint. An elastic reset member is provided below the expansion joint. The elastic reset member abuts against the bottom of the opposite side of the movable template and is used to push the two sets of movable templates to flip and open to both sides.

[0007] Preferably, an installation plate is provided below the movable template, and the positioning slide rail is fixedly installed on the top of the installation plate.

[0008] Preferably, both ends of the movable template are provided with sliding guide grooves, and the movable template is movably installed on the outer surface of the positioning slide rail through the sliding guide grooves.

[0009] Preferably, the elastic reset member includes a top strip and an elastic element disposed at the bottom of the top strip, the top strip abutting against the bottom of the movable template.

[0010] Preferably, the elastic element is a memory spring, a sliding shaft is fixedly welded to the bottom of the top bar, the memory spring is movably sleeved on the outer surface of the sliding shaft, and the bottom end of the sliding shaft movably passes through the mounting plate.

[0011] Preferably, the upper mold unit includes an inner mold and demolding components disposed at the bottom of both sides of the inner mold, and the lower surfaces of the inner mold and the demolding components are adapted to two sets of movable templates.

[0012] Preferably, positioning shafts are fixedly installed at both ends of the inner mold, and a drive mounting seat is fixedly welded to the middle of the inner mold.

[0013] Preferably, a demolding hydraulic cylinder is fixedly installed on the top of the demolding component, and the output end of the demolding hydraulic cylinder is fixedly connected to the inner mold.

[0014] This utility model discloses an adaptive compensation die device for a sheet metal bending machine, which has the following beneficial effects: During the bending process, different upper die units are replaced according to the required concavity. During the downward pressing of the upper die unit, the two sets of movable templates are passively closed towards the center under the action of the expansion joint, so that the upper end of the movable template protrudes towards the center to match the concave area of ​​the upper die unit. Thus, the movable template has the effect of adapting to upper die units with different concavity, thereby reducing die costs and simplifying the assembly process. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall outer surface structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the overall front-end structure of this utility model;

[0018] Figure 3 This is an exploded view of the internal structure of the lower mold unit of this utility model;

[0019] Figure 4 This is a schematic diagram of the outer surface structure of the upper mold unit of this utility model.

[0020] In the diagram: 1. Upper mold unit; 11. Inner mold; 12. Demolding component; 13. Positioning shaft; 14. Drive mounting base; 15. Demolding hydraulic cylinder; 2. Lower mold unit; 21. Mounting plate; 22. Movable template; 23. Positioning slide rail; 24. Elastic reset component; 241. Top bar; 242. Sliding shaft; 243. Memory spring; 25. Sliding guide groove; 26. Expansion joint. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model are described clearly and completely. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] This application provides an adaptive compensation die device for a sheet metal bending machine, which solves the problem that in the traditional die-pressing process, different punches and dies need to be changed simultaneously when the bending angle is different. This makes the overall bending process more complicated and requires more die costs.

[0023] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0024] This utility model discloses an adaptive compensation die device for a sheet metal bending machine.

[0025] Example 1

[0026] According to the appendix Figure 1-4 As shown, it includes an upper mold unit 1 and a lower mold unit 2. The middle part of the upper mold unit 1 is recessed on both sides. The lower mold unit 2 includes a positioning slide rail 23 and a movable template 22 that is slidably disposed on the outer wall of both sides of the positioning slide rail 23. The upper end of the movable template 22 protrudes towards the middle to match the recessed area of ​​the upper mold unit 1.

[0027] An expansion joint 26 is provided between the two sets of movable templates 22. The two sets of movable templates 22 adaptively adjust the flipping range towards the center through the expansion joint 26. An elastic reset member 24 is provided below the expansion joint 26. The elastic reset member 24 abuts against the bottom of the opposite side of the movable template 22 and is used to push the two sets of movable templates 22 to flip and open to both sides.

[0028] An installation plate 21 is provided below the movable template 22, and a positioning slide rail 23 is fixedly installed on the top of the installation plate 21. Sliding guide grooves 25 are provided at both ends of the movable template 22, and the movable template 22 is movably installed on the outer surface of the positioning slide rail 23 through the sliding guide grooves 25.

[0029] The elastic reset component 24 includes a top bar 241 and an elastic element disposed at the bottom of the top bar 241. The top bar 241 abuts against the bottom of the movable template 22. The elastic element is a memory spring 243. A sliding shaft 242 is fixedly welded to the bottom of the top bar 241. The memory spring 243 is movably sleeved on the outer surface of the sliding shaft 242. The bottom end of the sliding shaft 242 movably passes through the mounting plate 21. Under the action of the memory spring 243, the middle part of the bottom end of the two sets of movable templates 22 is pushed upward, so that the two sets of movable templates 22 slide naturally open to both sides along the positioning slide rail 23. This enables the two sets of movable templates 22 to automatically reset and open after each bending process, avoiding the situation where the movable templates 22 fail to open when the upper mold unit 1 is pressed down, resulting in bending failure.

[0030] Working principle: When using this device, the mounting plate 21 is fixed to the bending base of the bending machine, and then the upper die unit 1 is installed with the hydraulic cylinder on the upper part of the bending machine. At this time, under the action of the memory spring 243, the bottom middle of the two sets of movable templates 22 is pushed upward, so that the two sets of movable templates 22 slide and spread out to both sides along the positioning slide rail 23. At this time, the plate is moved at the top of the movable templates 22 and stops at the designated bending position. Then, the upper die unit 1 moves down, squeezing the plate into the space between the two sets of movable templates 22. As the bottom of the upper die unit 1 aligns with the bottom of the movable template 22, the plate is then pressed into the space between the two sets of movable templates 22. The two sets of movable templates 22 are pushed against each other, causing them to flip and fit together on the outer surface of the sheet metal. At this time, the memory spring 243 is compressed, thus completing the bending of the sheet metal. During the bending process, different upper mold units 1 are replaced according to the required bending depth. During the downward pressing of the upper mold unit 1, the two sets of movable templates 22 are passively closed towards the center under the action of the expansion joint 26, so that the upper end of the movable template 22 protrudes towards the center to match the concave area of ​​the upper mold unit 1. Thus, the movable template 22 has the effect of adapting to the upper mold unit 1 with different concavity, thereby reducing mold costs and simplifying the assembly process.

[0031] Example 2

[0032] According to the appendix Figure 1-4 As shown, based on Embodiment 1, more specifically, the upper mold unit 1 includes an inner mold 11 and demolding parts 12 disposed at the bottom of both sides of the inner mold 11. The lower surfaces of the inner mold 11 and the demolding parts 12 are adapted to two sets of movable templates 22.

[0033] Positioning shafts 13 are fixedly installed at both ends of the inner mold 11, and a drive mounting seat 14 is fixedly welded to the middle of the inner mold 11.

[0034] A demolding hydraulic cylinder 15 is fixedly installed on the top of the demolding component 12, and the output end of the demolding hydraulic cylinder 15 is fixedly connected to the inner mold 11.

[0035] Working principle: During the use of this device, when the upper mold unit 1 is pressed down, the output shaft of the demolding hydraulic cylinder 15 remains extended. At this time, the lower surfaces of the inner mold 11 and the demolding component 12 are adapted to the two sets of movable templates 22. After the workpiece is bent and formed, since the upper end of the workpiece is concave inward, the demolding hydraulic cylinder 15 is activated to retract its output end. This causes the demolding component 12 to move downward, squeezing the two sides of the workpiece downward, so that the workpiece is separated from the surface of the inner mold 11. Later, the workpiece is squeezed from the two sides to the center by the shaping mold to make the shape of the workpiece meet the usage requirements, which facilitates quick demolding during use.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A bending machine for sheet metal with self-adapting compensation of the die, comprising an upper die unit (1) and a lower die unit (2), characterized in that, The upper mold unit (1) has inward recesses on both sides of the middle part. The lower mold unit (2) includes a positioning slide rail (23) and a movable template (22) that is slidably disposed on the outer wall of both sides of the positioning slide rail (23). The upper end of the movable template (22) protrudes towards the middle and is adapted to the recessed area of ​​the upper mold unit (1). An expansion joint (26) is provided between the two sets of movable templates (22). The two sets of movable templates (22) adaptively adjust the flipping range towards the center through the expansion joint (26). An elastic reset member (24) is provided below the expansion joint (26). The elastic reset member (24) abuts against the bottom of the opposite side of the movable template (22) to push the two sets of movable templates (22) to flip and open to both sides.

2. The plate bending machine adaptive compensation die set of claim 1, wherein: An installation plate (21) is provided below the movable template (22), and the positioning slide rail (23) is fixedly installed on the top of the installation plate (21).

3. The plate bending machine adaptive compensation die set of claim 2, wherein: Both ends of the movable template (22) are provided with sliding guide grooves (25), and the movable template (22) is movably installed on the outer surface of the positioning slide rail (23) through the sliding guide grooves (25).

4. The plate bending machine adaptive compensation die set of claim 2, wherein: The elastic reset member (24) includes a top strip (241) and an elastic member disposed at the bottom of the top strip (241), wherein the top strip (241) abuts against the bottom of the movable template (22).

5. The plate bending machine adaptive compensation die set of claim 4, wherein: The elastic element is a memory spring (243), and a sliding shaft (242) is fixedly welded to the bottom of the top bar (241). The memory spring (243) is movably sleeved on the outer surface of the sliding shaft (242), and the bottom end of the sliding shaft (242) movably passes through the mounting plate (21).

6. The plate bending machine adaptive compensation die set of claim 1 wherein: The upper mold unit (1) includes an inner mold (11) and demolding parts (12) disposed at the bottom of both sides of the inner mold (11). The lower surfaces of the inner mold (11) and the demolding parts (12) are adapted to two sets of movable templates (22).

7. The plate bending machine adaptive compensation die set of claim 6, wherein: The inner mold (11) is fixedly installed with positioning shafts (13) at both ends, and a drive mounting seat (14) is fixedly welded to the middle of the inner mold (11).

8. The plate bending machine adaptive compensation die set of claim 6, wherein: The demolding component (12) is fixedly mounted with a demolding hydraulic cylinder (15) on its top, and the output end of the demolding hydraulic cylinder (15) is fixedly connected to the inner mold (11).

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