Bending device capable of adjusting spacing

Abstract

The bending device comprises a base, a first sliding block, a second sliding block, a limiting block, a supporting column, a fixing plate and a lifting assembly, a first sliding groove and a second sliding groove are formed in the top of the base, and the first sliding block and the second sliding block are slidably connected into the corresponding sliding grooves correspondingly; inclined limiting holes which are distributed in a staggered manner are formed in the middle parts of the upper part and the lower part; limiting blocks are arranged at the top of the base, the bottom is connected with a fixing plate through supporting columns, and a lifting assembly is arranged on the fixing plate. The lifting assembly drives the fixing columns to ascend and descend, vertical movement is converted into horizontal reverse synchronous movement of the two sliding blocks in cooperation with the obliquely-staggered limiting holes, accurate adjustment of the bending supporting distance is achieved, and the problems that a traditional bending tool is tedious in operation and low in efficiency, and symmetry is difficult to guarantee are solved; and meanwhile, the device has the advantages of workpiece surface protection, stable and reliable structure and the like and is suitable for batch bending of metal plates.

Description

Technical Field

[0001] This invention belongs to the technical field of bending fixtures, specifically relating to a bending device with adjustable spacing. Background Technology

[0002] In the field of sheet metal processing, bending is a core plastic forming process. Bending fixtures, as key equipment supporting the sheet metal and working with bending machines to complete the bending process, have their support point spacing directly determining the bending line position, which in turn affects the final forming angle of the workpiece. Traditional bending fixtures have significant drawbacks: either they use a fixed spacing design, which cannot adapt to the processing requirements of workpieces of different specifications; or they require manual adjustment of two support points separately, which is cumbersome, slow, and difficult to achieve synchronous symmetrical movement based on the pressure center, easily leading to bending axis deviation, seriously affecting processing accuracy, product consistency, and batch operation efficiency. Summary of the Invention

[0003] To address the aforementioned problems, the present invention aims to provide an adjustable-spacing bending device that is easy to operate, quick to adjust, can move synchronously and symmetrically, and ensures no offset during bending. This invention is achieved through the following technical solution: An adjustable-spacing bending device includes a base, support columns, a first slider, a limiting block, a second slider, a fixing plate, a pressure applying mechanism, and a lifting assembly. The base has a first and a second sliding groove on its top. The first slider is slidably connected to the top of the first sliding groove. The second slider is slidably connected to the top of the second sliding groove. The lower parts of the first and second sliders are staggered, and both have a limiting hole with an angle in the middle, with the limiting holes of the first and second sliders being staggered. Limiting blocks are symmetrically fixed on both sides of the top of the base. Several support columns are fixedly connected to the bottom of the base in a rectangular array. A fixing plate is fixedly connected between all the support columns. A lifting assembly for providing power to the first and second sliders is provided on the top of the fixing plate. The pressure applying mechanism includes a hydraulic cylinder and a pressing block. The hydraulic cylinder is bolted to the top of the base. The working end of the hydraulic cylinder is connected to the pressing block. The pressing block is located directly above the staggered position of the first and second sliders.

[0004] Furthermore, the lifting assembly includes an electric push rod, a support rod, a fixed column, and a guide rod; the electric push rod is fixedly connected to the middle of the fixed plate; the working end of the electric push rod is fixedly connected to the support rod; the top of the support rod is provided with a fixed column; the limiting holes on the first slider and the second slider are both in contact with the fixed column; guide rods are symmetrically fixedly connected between the top of the fixed plate and the bottom of the base; the guide rods are all slidably connected to the support rod.

[0005] Furthermore, the inclination angle of the limiting hole is 15°-60°, and the inclination direction of the limiting hole on the first slider and the second slider is opposite.

[0006] Furthermore, the support rod is U-shaped.

[0007] Furthermore, it also includes a connecting rod; the tops of the first slider and the second slider are rotatably connected to the connecting rod via bearings on their respective sides; the axis of the connecting rod is perpendicular to the sliding direction of the first slider and the second slider, and the outer surface of the connecting rod is fitted with a wear-resistant rubber sleeve.

[0008] Furthermore, the lower end face of the pressing block is an arc-shaped transition surface.

[0009] Furthermore, all the support columns are made of 304 stainless steel; the outer diameter of the support column is 30-50mm, and the connection between the support column and the base and the fixing plate is provided with reinforcing ribs.

[0010] Furthermore, the lower pressure block is made of high-strength alloy steel, and the lower end surface of the lower pressure block is coated with a titanium nitride wear-resistant coating with a coating thickness of 5-15μm.

[0011] Furthermore, the outer surface of the guide rod is provided with a chrome-plated layer; the support rod is provided with a guide hole adapted to the guide rod; a linear bearing is installed in the guide hole; the linear bearing is slidably engaged with the guide rod.

[0012] Furthermore, the limiting block is U-shaped; the fixing post is disposed inside the limiting block and can slide along the limiting block.

[0013] The beneficial effects of this invention are: 1. Precise and efficient adjustment: The fixed column is raised and lowered by an electric push rod, and the vertical motion is converted into the horizontal reverse synchronous movement of the two sliders by the inclined and staggered limit holes. This achieves precise adjustment of the bending support spacing without the need for manual operation. It overcomes the problems of cumbersome adjustment and poor symmetry of traditional tooling, and significantly improves the efficiency of batch processing.

[0014] 2. Protect the workpiece surface: The rotating connecting rod at the top of the slider can rotate adaptively with the deformation of the workpiece, converting the sliding friction between the workpiece and the support surface into rolling friction, effectively reducing scratches or wear on the workpiece surface and improving the surface quality of the product.

[0015] 3. Stable and reliable structure: The rigid support rod structure guided by the guide rod, combined with stainless steel support columns, high-strength alloy pressure blocks and wear-resistant limit blocks, ensures that the device can maintain reliable positioning and stable support when repeatedly adjusted and subjected to large bending forces, thus extending its service life.

[0016] 4. High adaptability: The spacing adjustment range is flexible. With replaceable pressure blocks and limit hole design that adapts to different tilt angles, it can meet the bending processing needs of metal sheets of various specifications and has strong versatility. Attached Figure Description

[0017] The present invention will now be described in further detail with reference to the accompanying drawings.

[0018] Figure 1 This is a schematic diagram of the structure of the present invention.

[0019] Figure 2 This is a schematic diagram of the structure and fit of the first slider in this invention.

[0020] Figure 3 This is a schematic diagram of the structural assembly of the lifting component described in this invention.

[0021] As shown in the figure: 1-base; 2-support column; 201-first slide groove; 202-second slide groove; 3-first slider; 4-limiting block; 5-second slider; 6-limiting hole; 7-fixing plate; 8-electric push rod; 9-support rod; 10-fixing column; 11-guide rod; 12-connecting rod; 13-hydraulic cylinder; 14-pressing block. Detailed Implementation

[0022] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0023] It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings of this specification are merely for illustrative purposes to aid those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which the invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to the size, without affecting the effects and objectives achieved by the invention, should still fall within the scope of the technical content disclosed herein. Furthermore, the terms such as "upper," "lower," "left," "right," and "middle" used in this specification are merely for clarity and are not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention's implementation.

[0024] In the description of this invention, it should be noted that, unless otherwise expressly specified and limited, the terms "connected" or "linked" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. It should be noted that the terms "comprising," "including," or any other variations are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0025] like Figures 1-3 The adjustable spacing bending device shown includes a base 1, a support column 2, a first slider 3, a limiting block 4, a second slider 5, a fixing plate 7, a connecting rod 12, a pressure applying mechanism, and a lifting assembly. The base 1 has a first sliding groove 201 and a second sliding groove 202 on its top; a first slider 3 is slidably connected to the top of the first sliding groove 201; a second slider 5 is slidably connected to the top of the second sliding groove 202; the lower parts of the first slider 3 and the second slider 5 are staggered, and both have a limiting hole 6 with an inclination angle in their middle, and the limiting holes 6 of the first slider 3 and the second slider 5 are staggered; the inclination angle of the limiting hole 6 is 15°-60°, and the inclination direction of the limiting hole 6 on the first slider 3 and the second slider 5 is opposite.

[0026] Limiting blocks 4 are symmetrically fixed on both sides of the top of the base 1; the limiting blocks 4 are U-shaped; the fixing posts 10 are set inside the limiting blocks 4 and can slide along the limiting blocks 4.

[0027] The base 1 has several support columns 2 fixedly connected to its bottom in a rectangular array; all the support columns 2 are fixedly connected to a fixing plate 7; the support columns 2 are all made of 304 stainless steel; the outer diameter of the support column 2 is 30-50mm, and the connection between the support column 2 and the base 1 and the fixing plate 7 is provided with a reinforcing rib plate.

[0028] The top of the fixed plate 7 is provided with a lifting assembly for providing power to the first slider 3 and the second slider 5; the lifting assembly includes an electric push rod 8, a support rod 9, a fixed column 10, and a guide rod 11; the electric push rod 8 is fixedly connected to the middle of the fixed plate 7; the working end of the electric push rod 8 is fixedly connected to the support rod 9; the top of the support rod 9 is provided with the fixed column 10; the limiting holes 6 on the first slider 3 and the second slider 5 are both in abutment with the fixed column 10; the top of the fixed plate 7 and the bottom of the base 1 are symmetrically fixedly connected with guide rods 11; the guide rods 11 are all slidably connected to the support rods 9; the support rods 9 are U-shaped; the outer surface of the guide rods 11 is provided with a chrome-plated layer; the support rods 9 are provided with guide holes adapted to the guide rods 11; a linear bearing is installed in the guide hole; the linear bearing is slidably engaged with the guide rods 11.

[0029] The pressure-applying mechanism includes a hydraulic cylinder 13 and a lower pressure block 14; the hydraulic cylinder 13 is bolted to the top of the base 1; the working end of the hydraulic cylinder 13 is connected to the lower pressure block 14; the lower pressure block 14 is located directly above the staggered position of the first slider 3 and the second slider 5; the lower end surface of the lower pressure block 14 is an arc-shaped transition surface; the lower pressure block 14 is made of high-strength alloy steel, and the lower end surface of the lower pressure block 14 is coated with a titanium nitride wear-resistant coating with a coating thickness of 5-15μm.

[0030] The first slider 3 and the second slider 5 are rotatably connected to a connecting rod 12 via bearings on the sides of their tops that are close to each other; the axis of the connecting rod 12 is perpendicular to the sliding direction of the first slider 3 and the second slider 5, and the outer surface of the connecting rod 12 is fitted with a wear-resistant rubber sleeve.

[0031] Working principle of this invention: In use, place the workpiece to be bent in the intersecting area above the two sliders. Initially, the electric push rod 8 retracts, and the fixed column 10 locks the slider position, determining the initial support spacing. When the spacing needs to be adjusted, start the electric push rod 8. The extension rod pushes the support rod 9, which in turn drives the fixed column 10 to rise along the guide rod 11. The fixed column 10, through the inclined plane of the inclined limiting hole 6, drives the first slider 3 to move to the right and the second slider 5 to move to the left, achieving reverse synchronous adjustment. After adjustment, the electric push rod 8 locks in position. Start the hydraulic cylinder 13, and the lower pressure block 14 moves down to apply pressure to the workpiece. During bending, the connecting rod 12 rotates with the workpiece deformation, reducing friction and scratches. After bending is completed, the hydraulic cylinder 13 resets. If the spacing needs to be changed, repeat the above adjustment process.

[0032] The scope of protection of this invention is not limited to the technical solutions disclosed in the specific embodiments. Any modifications, equivalent substitutions, improvements, etc., made to the above embodiments based on the technical essence of this invention shall fall within the scope of protection of this invention.

Claims

1. A bending device with adjustable spacing, characterized in that... The system includes a base (1), a support column (2), a first slider (3), a limiting block (4), a second slider (5), a fixing plate (7), a pressure applying mechanism, and a lifting assembly. The base (1) has a first sliding groove (201) and a second sliding groove (202) at its top. The first slider (3) is slidably connected to the top of the first sliding groove (201). The second slider (5) is slidably connected to the top of the second sliding groove (202). The lower parts of the first slider (3) and the second slider (5) are staggered, and both have a limiting hole (6) with an inclination angle in their middle sections. The limiting holes (6) of the first slider (3) and the second slider (5) are staggered. Limiting blocks (4) are symmetrically fixed on both sides of the top of the base (1); several support columns (2) are fixedly connected to the bottom of the base (1) in a rectangular array; a fixing plate (7) is fixedly connected between all the support columns (2); a lifting component for providing power to the first slider (3) and the second slider (5) is provided on the top of the fixing plate (7); the pressure mechanism includes a hydraulic cylinder (13) and a pressing block (14); the hydraulic cylinder (13) is bolted to the top of the base (1); the working end of the hydraulic cylinder (13) is connected to the pressing block (14); the pressing block (14) is located directly above the staggered position of the first slider (3) and the second slider (5).

2. The adjustable-spacing bending device according to claim 1, characterized in that... The lifting assembly includes an electric push rod (8), a support rod (9), a fixed column (10), and a guide rod (11); the electric push rod (8) is fixedly connected to the middle of the fixed plate (7); the working end of the electric push rod (8) is fixedly connected to the support rod (9); the top of the support rod (9) is provided with a fixed column (10); the limiting holes (6) on the first slider (3) and the second slider (5) are both in contact with the fixed column (10); the top of the fixed plate (7) and the bottom of the base (1) are symmetrically fixedly connected with guide rods (11); the guide rods (11) are all slidably connected to the support rods (9).

3. The adjustable-spacing bending device according to claim 2, characterized in that... The inclination angle of the limiting hole (6) is 15°-60°, and the inclination direction of the limiting hole (6) on the first slider (3) and the second slider (5) is opposite.

4. The adjustable spacing bending device according to claim 2, characterized in that... The support rod (9) is U-shaped.

5. The adjustable-spacing bending device according to claim 1, characterized in that... It also includes a connecting rod (12); the tops of the first slider (3) and the second slider (5) are rotatably connected to the connecting rod (12) by bearings on the side that are close to each other; the axis of the connecting rod (12) is perpendicular to the sliding direction of the first slider (3) and the second slider (5), and the outer surface of the connecting rod (12) is covered with a wear-resistant rubber sleeve.

6. The adjustable-spacing bending device according to claim 1, characterized in that... The lower end face of the pressing block (14) is an arc-shaped transition surface.

7. The adjustable-spacing bending device according to claim 1, characterized in that... The support columns (2) are all made of 304 stainless steel; the outer diameter of the support columns (2) is 30-50mm, and the connection between the support columns (2) and the base (1) and the fixing plate (7) is provided with reinforcing ribs.

8. The adjustable-spacing bending device according to claim 6, characterized in that... The lower pressure block (14) is made of high-strength alloy steel, and the lower end surface of the lower pressure block (14) is coated with a titanium nitride wear-resistant coating with a coating thickness of 5-15μm.

9. The adjustable-spacing bending device according to claim 2, characterized in that... The outer surface of the guide rod (11) is provided with a chrome plating layer; the support rod (9) is provided with a guide hole adapted to the guide rod (11); a linear bearing is installed in the guide hole; the linear bearing is in sliding fit with the guide rod (11).

10. The adjustable-spacing bending device according to claim 2, characterized in that... The limiting block (4) is U-shaped; the fixing column (10) is set inside the limiting block (4) and can slide along the limiting block (4).

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