A metal piece flanging apparatus

Abstract

The application relates to the technical field of metal processing, and discloses a metal piece flanging equipment which comprises a machining table, a flanging die assembly, a positioning assembly and a driving assembly. The metal piece flanging equipment is innovatively designed through the positioning assembly, wherein the first set of blocks symmetrically arranged by the first bidirectional screw rod drive linearly move along the first guide column, drive the lateral positioning plate to accurately clamp the outer wall of the lower die, meanwhile, the second bidirectional screw rod controls the second set of blocks to drive the cylinder and the downward positioning plate to vertically press down the lower die, the smooth bottom surface of the pressure distribution block uniformly transmits pressure to the surface of the machining table, a double locking mechanism of lateral constraint + vertical pressing is formed, accumulated deviation in die operation is completely eliminated, the precise gap cooperation of the guide block and the guide hole guarantees the coaxiality of the flanging track of the upper die, finally, the flanging angle precision is stably kept within a certain range, the die positioning adjustment efficiency is effectively improved, the product rejection rate caused by die deviation is greatly reduced, and the metal piece flanging equipment is more practical.

Description

Technical Field

[0001] This application relates to the field of metal processing technology, specifically to a metal parts bending device. Background Technology

[0002] Metalworking is a process that uses mechanical means or heat treatment to cut, shape, join, and finish metal raw materials to obtain parts or products with desired geometry, dimensions, properties, or surface quality. It is one of the fundamental processes in manufacturing and is widely used in machinery, automotive, aerospace, electronics, electrical appliances, mold making, and other fields.

[0003] Folding metal parts during processing, also known as edge bending or flanging, is an important process step in sheet metal forming.

[0004] Existing devices typically press down on both sides of the lower mold for positioning. However, after a period of use, the lower mold inevitably shifts. To address this issue, a metal part bending device is proposed. Summary of the Invention

[0005] Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this application provides a metal part bending device that combines pressing and clamping positioning methods, thereby improving the accuracy of mold installation and positioning and solving the problems mentioned in the background technology.

[0007] To achieve the above objectives, this application provides the following technical solution: a metal part bending device, comprising a processing table, a bending die assembly, a positioning assembly, and a driving assembly. The bending die assembly includes a lower die and an upper die, the lower die being adapted to the upper die. Guide blocks are fixedly connected to the four corners of the upper surface of the lower die. The bottom surface of the upper die has four guide holes, and the guide blocks correspond to the guide holes. The positioning assembly includes a first reserved groove and a second reserved groove formed inside the processing table. A first bidirectional lead screw is rotatably sleeved on the inner wall of the first reserved groove. Two symmetrical first sleeve blocks are threadedly connected to the outer surface of the first bidirectional lead screw. A lateral positioning plate is fixedly connected to the upper surface of each first sleeve block. A second bidirectional lead screw is rotatably sleeved on the inner wall of the second reserved groove. Two symmetrical second sleeve blocks are threadedly connected to the outer surface of the second bidirectional lead screw.

[0008] The above solution employs an innovative design for the positioning components. A first bidirectional lead screw drives symmetrically arranged first blocks to move linearly along the first guide post, causing the lateral positioning plate to precisely clamp the outer wall of the lower mold. Simultaneously, a second bidirectional lead screw controls the second block to drive the cylinder and the lower positioning plate to vertically press down on the upper surface of the lower mold, forming a dual locking mechanism of lateral constraint and vertical clamping. This completely eliminates accumulated offset during mold operation. Combined with the precise clearance fit between the guide block and the guide hole, the coaxiality of the upper mold's folding trajectory is ensured, ultimately stabilizing the folding angle accuracy within a certain range. This effectively improves mold positioning and adjustment efficiency, significantly reducing product scrap rates caused by mold offset, making the solution more practical.

[0009] Furthermore, each of the guide holes has an embedded bolt installed on its inner wall, and the drive assembly includes a connecting module, with the upper mold fixedly connected to the connecting module via the embedded bolt.

[0010] With the above solution, the embedded bolt is set inside the guide hole, which achieves the effect of making reasonable use of space. In addition, the embedded bolt is made of high-strength internal hexagon screw, which rigidly connects the upper mold to the hydraulic connection module, ensuring that there is no risk of loosening under impact load.

[0011] Furthermore, an L-shaped bracket is fixedly connected to the upper surface of the processing table, and a hydraulic cylinder is installed at one end of the L-shaped bracket. The output end of the hydraulic cylinder is fixedly connected to the upper surface of the connecting module.

[0012] The above solution allows the L-shaped bracket to be welded to the processing table, and the hydraulic cylinder output force to be adjustable, meeting the bending requirements of metal parts of different thicknesses.

[0013] Furthermore, two first guide posts are installed on the inner wall of the first reserved groove, and the two sides of the two first sleeve blocks are respectively slidably sleeved on the outer surface of the two first guide posts.

[0014] Through the above scheme, the first guide post and the first sleeve block form a sliding pair, which constrains the circumferential displacement when the first bidirectional lead screw rotates, ensuring that the deviation of the linear movement trajectory of the lateral positioning plate is low.

[0015] Furthermore, the shaft end of the first bidirectional lead screw passes through the processing table and is fixedly connected to a first knob, and the outer surface of the first knob is provided with uniformly distributed anti-slip grooves.

[0016] The above solution increases the contact area at the shaft end of the first bidirectional lead screw by setting a lateral positioning plate, thus facilitating the rotation of the first bidirectional lead screw. The anti-slip groove increases friction, making it more convenient to use.

[0017] Furthermore, a cylinder is fixedly connected to the upper surface of each of the second sets of blocks, a pressure positioning plate is fixedly connected to the output end of each cylinder, and a pressure dividing block is fixedly connected to the top of each of the second sets of blocks. The bottom surface of the pressure dividing block is a smooth surface, and the bottom surface of the pressure dividing block is in contact with the upper surface of the processing table.

[0018] The above solution, with the combination of the downward positioning plate and the side positioning plate, can achieve a more stable positioning effect and is more practical.

[0019] Furthermore, two second guide posts are installed on the inner wall of the second reserved groove, and the two sides of the two second sleeve blocks are respectively slidably sleeved on the outer surface of the two second guide posts.

[0020] The above scheme allows the two second blocks to move closer or further apart by using the second guide post, thus facilitating the pressing and positioning of lower molds of different sizes.

[0021] Furthermore, the shaft end of the second bidirectional lead screw passes through the processing table and is fixedly connected to a second knob, and the outer surface of the second knob is provided with evenly distributed anti-slip grooves.

[0022] The above scheme increases the contact area at the shaft end of the second bidirectional lead screw by setting a second knob, and the anti-slip groove increases the friction on the surface of the second knob, thus facilitating the rotation of the second bidirectional lead screw.

[0023] Beneficial effects

[0024] This metal part bending equipment employs an innovative design of positioning components. A first bidirectional lead screw drives symmetrically arranged first set of blocks to move linearly along the first guide post, causing a lateral positioning plate to precisely clamp the outer wall of the lower mold. Simultaneously, a second bidirectional lead screw controls a second set of blocks to drive a cylinder and a downward positioning plate to vertically press down on the lower mold. Combined with the smooth bottom surface of the pressure distribution block, pressure is evenly transmitted to the processing table surface, forming a dual locking mechanism of lateral constraint and vertical clamping. This completely eliminates accumulated offset during mold operation. The precise clearance between the guide block and the guide hole ensures the coaxiality of the upper mold bending trajectory, ultimately stabilizing the bending angle accuracy within a certain range. This effectively improves mold positioning and adjustment efficiency, significantly reducing product scrap rates caused by mold offset, making it more practical. Attached Figure Description

[0025] Figure 1 This is a top view of the overall structure of this application.

[0026] Figure 2 This is a schematic diagram of the overall bottom view of the structure of this application;

[0027] Figure 3This is a partial planar structural diagram of the structure of this application;

[0028] Figure 4 This is a partial bottom view of the structure of this application;

[0029] Figure 5 This is a partial top view of the structure of this application.

[0030] In the picture:

[0031] 1. Processing table; 2. Folding mold assembly; 201. Lower mold; 202. Upper mold; 203. Guide block; 204. Guide hole; 205. Embedded bolt; 3. Positioning assembly; 301. First reserved slot; 302. First double-acting lead screw; 303. First sleeve block; 304. First guide post; 305. First knob; 306. Side positioning plate; 307. Second reserved slot; 308. Second double-acting lead screw; 309. Second sleeve block; 310. Cylinder; 311. Lowering positioning plate; 312. Pressure dividing block; 313. Second guide post; 314. Second knob; 4. Drive assembly; 401. L-shaped bracket; 402. Hydraulic cylinder; 403. Connecting module. Detailed Implementation

[0032] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0033] Please see Figure 1 , Figure 2 and Figure 4This embodiment of a metal part bending device includes a processing table 1, a bending die assembly 2, a positioning assembly 3, and a driving assembly 4. The bending die assembly 2 includes a lower die 201 and an upper die 202. Guide blocks 203 are fixedly connected to the four corners of the upper surface of the lower die 201. The bottom surface of the upper die 202 has four guide holes 204. The guide blocks 203 correspond to the guide holes 204, and the guide blocks 203 and guide holes 204 form a precision clearance fit to achieve vertical guidance of the upper die 202, reduce coaxiality error, and effectively prevent lateral load during the bending process. An embedded bolt 205 is installed on the inner wall of each guide hole 204. The driving assembly 4 includes a connecting module 403. The upper mold 202 is fixedly connected to the connecting module 403 by embedded bolts 205. The embedded bolts 205 are set inside the guide hole 204, which realizes the effect of making reasonable use of space. The embedded bolts 205 are high-strength internal hexagon screws, which rigidly connect the upper mold 202 to the hydraulic connecting module 403, ensuring that there is no risk of loosening under impact load. An L-shaped bracket 401 is fixedly connected to the upper surface of the processing table 1. A hydraulic cylinder 402 is installed at one end of the L-shaped bracket 401. The output end of the hydraulic cylinder 402 is fixedly connected to the upper surface of the connecting module 403. The L-shaped bracket 401 is welded to the processing table 1. The output force of the hydraulic cylinder 402 is adjustable to meet the bending requirements of metal parts of different thicknesses.

[0034] Please see Figure 1 , Figure 3 and Figure 5 The positioning component 3 includes a first reserved groove 301 and a second reserved groove 307 formed inside the processing table 1. A first bidirectional lead screw 302 is rotatably sleeved on the inner wall of the first reserved groove 301. Two symmetrical first sleeve blocks 303 are threadedly connected to the outer surface of the first bidirectional lead screw 302. A lateral positioning plate 306 is fixedly connected to the upper surface of each first sleeve block 303. Two first guide posts 304 are installed on the inner wall of the first reserved groove 301. The two sides of the two first sleeve blocks 303 are slidably sleeved on the outer surfaces of the two first guide posts 304 respectively. The first set of blocks 303 forms a sliding pair, which constrains the circumferential displacement of the first bidirectional lead screw 302 when it rotates, and ensures that the deviation of the linear movement trajectory of the lateral positioning plate 306 is low. The rotating shaft end of the first bidirectional lead screw 302 passes through the processing table 1 and is fixedly connected to the first knob 305. The outer surface of the first knob 305 is provided with uniformly distributed anti-slip grooves. The lateral positioning plate 306 can increase the contact area of ​​the rotating shaft end of the first bidirectional lead screw 302, thereby facilitating the rotation of the first bidirectional lead screw 302. The anti-slip grooves can increase the friction and make it more convenient to use.

[0035] Please see Figure 1 , Figure 3 and Figure 5The inner wall of the second reserved groove 307 is rotatably fitted with a second bidirectional lead screw 308. Two symmetrical second sleeve blocks 309 are threadedly connected to the outer surface of the second bidirectional lead screw 308. Two second guide posts 313 are installed on the inner wall of the second reserved groove 307. The two sides of the two second sleeve blocks 309 are slidably fitted onto the outer surfaces of the two second guide posts 313. The second guide posts 313 allow the two second sleeve blocks 309 to move closer or further apart, facilitating the pressing and positioning of lower molds 201 of different sizes. A cylinder 310 is fixedly connected to the upper surface of each second sleeve block 309. Each output end of the 0 is fixedly connected to a pressure positioning plate 311. Each second set of blocks 309 is fixedly connected to a pressure dividing block 312 on its top. The bottom surface of the pressure dividing block 312 is a smooth surface and is in contact with the upper surface of the processing table 1. The rotating shaft end of the second bidirectional lead screw 308 passes through the processing table 1 and is fixedly connected to a second knob 314. The outer surface of the second knob 314 is provided with uniformly distributed anti-slip grooves. The second knob 314 can increase the contact area of ​​the rotating shaft end of the second bidirectional lead screw 308, and the anti-slip grooves can increase the friction of the surface of the second knob 314, thereby facilitating the rotation of the second bidirectional lead screw 308.

[0036] The core innovation of this embodiment lies in its positioning component 3. The first bidirectional lead screw 302 drives the symmetrically arranged first slider 303 to move linearly along the first guide post 304, causing the lateral positioning plate 306 to precisely clamp the outer wall of the lower mold 201. At the same time, the second bidirectional lead screw 308 controls the second slider 309 to drive the cylinder 310 and the lower positioning plate 311 to vertically press the top of the lower mold 201. The pressure distribution block 312 at the bottom of the lower positioning plate 311 evenly transmits the pressure to the surface of the processing table 1 through its smooth bottom surface. This dual locking mechanism, which combines lateral constraint and vertical pressing, completely eliminates the cumulative offset of the mold during operation. The precise clearance fit between the guide block 203 and the guide hole 204 ensures the strict coaxiality of the folding trajectory of the upper mold 202 and the lower mold 201.

[0037] The working principle of the above embodiment is as follows: The operator first rotates the first knob 305 to drive the first bidirectional lead screw 302 to rotate, which drives the symmetrical first sleeve block 303 to slide towards each other along the first guide post 304, so that the lateral positioning plate 306 fixed on the sleeve block tightly clamps the two sides of the lower mold 201. Simultaneously, the operator rotates the second knob 314 to control the rotation of the second bidirectional lead screw 308, which pushes the second sleeve block 309 to move along the second guide post 313 to the position directly above the installation position of the lower mold 201. After the cylinder 310 is turned off, its output end drives the lower positioning plate 311 to move vertically downward, and the pressure is evenly transmitted to the surface of the processing table 1 through the smooth bottom surface of the pressure dividing block 312. A vertical clamping force is formed. At this time, the lower mold 201 is three-dimensionally locked by the clamping force of the lateral positioning plate 306 and the downward pressure of the downward positioning plate 311. The displacement tolerance is controlled within a certain range. During the bending operation, the hydraulic cylinder 402 applies the punching force through the L-shaped bracket 401, pushing the connecting module 403 to drive the upper mold 202 to press down precisely along the guide block 203. When the bending edge of the upper mold 202 contacts the metal sheet, it maintains a vertical movement trajectory under the constraint of the guide hole 204 and the guide block 203, forcing the metal part to be bent precisely along the groove of the lower mold 201. After the stamping is completed, the hydraulic cylinder 402 returns, and the whole system resets and stands by.

[0038] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A metal part bending device, comprising a processing table (1), a bending die assembly (2), a positioning assembly (3), and a driving assembly (4), characterized in that: The folding die assembly (2) includes a lower die (201) and an upper die (202). The lower die (201) is adapted to the upper die (202). Guide blocks (203) are fixedly connected to the four corners of the upper surface of the lower die (201). The bottom surface of the upper die (202) has four guide holes (204). The guide blocks (203) correspond to the guide holes (204). The positioning assembly (3) includes a first reserved groove (301) and a second reserved groove (304) opened inside the processing table (1). 307), the inner wall of the first reserved groove (301) is rotatably sleeved with a first bidirectional lead screw (302), the outer surface of the first bidirectional lead screw (302) is threaded with two symmetrical first sleeve blocks (303), the upper surface of each first sleeve block (303) is fixedly connected with a lateral positioning plate (306), the inner wall of the second reserved groove (307) is rotatably sleeved with a second bidirectional lead screw (308), the outer surface of the second bidirectional lead screw (308) is threaded with two symmetrical second sleeve blocks (309).

2. The metal part bending device according to claim 1, characterized in that: Each of the guide holes (204) has an embedded bolt (205) installed on its inner wall. The drive assembly (4) includes a connecting module (403). The upper mold (202) is fixedly connected to the connecting module (403) by the embedded bolt (205).

3. The metal part bending device according to claim 2, characterized in that: An L-shaped bracket (401) is fixedly connected to the upper surface of the processing table (1). A hydraulic cylinder (402) is installed at one end of the L-shaped bracket (401). The output end of the hydraulic cylinder (402) is fixedly connected to the upper surface of the connecting module (403).

4. A metal part bending device according to claim 1, characterized in that: Two first guide posts (304) are installed on the inner wall of the first reserved groove (301), and the two sides of the two first sleeve blocks (303) are respectively slidably sleeved on the outer surface of the two first guide posts (304).

5. A metal part bending device according to claim 1, characterized in that: The first bidirectional lead screw (302) has a shaft end that passes through the processing table (1) and is fixedly connected to a first knob (305). The outer surface of the first knob (305) is provided with uniformly distributed anti-slip grooves.

6. A metal part bending device according to claim 1, characterized in that: Each of the second sets of blocks (309) has a cylinder (310) fixedly connected to its upper surface. Each cylinder (310) has a pressure positioning plate (311) fixedly connected to its output end. Each of the second sets of blocks (309) has a pressure dividing block (312) fixedly connected to its top. The bottom surface of the pressure dividing block (312) is a smooth surface, and the bottom surface of the pressure dividing block (312) is in contact with the upper surface of the processing table (1).

7. A metal part bending device according to claim 6, characterized in that: The inner wall of the second reserved groove (307) is equipped with two second guide posts (313), and the two sides of the two second sleeve blocks (309) are respectively slidably sleeved on the outer surface of the two second guide posts (313).

8. A metal part bending device according to claim 1, characterized in that: The shaft end of the second bidirectional lead screw (308) passes through the processing table (1) and is fixedly connected to a second knob (314). The outer surface of the second knob (314) is provided with uniformly distributed anti-slip grooves.

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