Metal piece bending and forming die

Abstract

The application relates to the technical field of metal piece processing, and discloses a metal piece bending and plastic forming die, which comprises a bending and plastic forming die assembly, a limiting platform assembly and a driving assembly, and the bending and plastic forming die assembly comprises an upper die and a lower die. The metal piece bending and plastic forming die provides effective buffering in the bending and stamping process through the synergistic effect of the four-rod connecting piece, the middle bending plate, the main telescopic rod assembly and the telescopic spring, significantly absorbs impact force, protects die components, prolongs die life, improves the forming effect of tough materials or large-angle bending, the gasket cooperates with the positioning block and the sliding groove, the lower die is quickly and prepositioned on the workbench, the miniature telescopic rod assembly enables the lower pressing plate to move up and down, the locking effect of the screw rod and the nut is combined, the lower die is efficiently and stably pressed and fixed on the upper surface of the workbench, the installation efficiency and the positioning firmness are greatly improved, and the four guide columns are precisely matched with the corresponding guide holes.

Description

Technical Field

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

[0002] Metal parts are widely used in many fields such as machinery manufacturing, automobiles, aerospace, and home appliances, and often require bending and shaping processes to meet specific shape and functional requirements. Bending and shaping equipment is a key process equipment for achieving precise and efficient bending of metal parts.

[0003] Currently, common metal bending equipment, especially molds used for bending complex shapes or at multiple angles, typically employs a fixed upper mold (punch) and lower mold (die) structure for stamping.

[0004] However, during the bending process, especially when bending tough materials or at large angles, the mold components may be subjected to impact or require a certain stroke buffer. Traditional mold structures do not adequately consider this, which may affect the mold life or molding effect. In order to solve the above problems, a metal part bending molding mold 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 and shaping mold. Through the cooperation of a central bending plate, a main telescopic rod assembly, and a telescopic spring, it can provide a certain buffer during the bending and shaping process of the metal part, thus solving the problems mentioned in the background art.

[0007] To achieve the above objectives, this application provides the following technical solution: a metal part bending and shaping mold, including a bending and shaping mold assembly, the bending and shaping mold assembly including an upper mold and a lower mold, the limiting platform assembly including a worktable and sliding grooves opened on both sides of the worktable, a bending punch head fixedly connected to the bottom surface of the upper mold, and pads fixedly connected to the four corners of the bottom surface of the upper mold, and a guide post fixedly connected to the bottom end of each pad.

[0008] The upper surface of the lower mold is fixedly connected to two symmetrical arc-shaped bending platforms. A four-bar connector is slidably fitted inside the lower mold. A middle bending plate is fixedly connected to the top of the four-bar connector. A U-shaped frame is fixedly connected to the bottom surface of the lower mold. A main telescopic rod assembly is installed on the inner wall of the U-shaped frame. The top of the main telescopic rod assembly is fixedly connected to the bottom of the four-bar connector. A telescopic spring is provided between the four-bar connector and the main telescopic rod assembly. The two ends of the telescopic spring are fixedly connected to the surfaces of the four-bar connector and the U-shaped frame, respectively. Fixing blocks are fixedly connected to the four corners of the upper surface of the lower mold. Each fixing block has a guide hole inside.

[0009] The above solution, through the synergistic action of the four-bar connector, the central bending plate, the main telescopic rod assembly, and the telescopic spring, provides effective buffering during the bending and stamping process, significantly absorbing impact force. The precise fit between the four guide pillars and the corresponding guide holes ensures accurate alignment between the upper die driving the bending stamping head and the arc-shaped bending table and the central bending plate, greatly improving the bending accuracy and shaping quality of metal parts. The overall structure is reasonably designed and easy to operate, solving the problem of insufficient buffering in traditional dies.

[0010] Furthermore, a pad is fixedly connected to both sides of the bottom surface of the lower mold, and a positioning block is fixedly connected to the bottom surface of each pad. The two positioning blocks are slidably sleeved in the inner walls of the two slide grooves.

[0011] The above solution allows the lower mold to be pre-installed on the surface of the workbench using the provided pads and positioning blocks, facilitating subsequent locking of the lower mold.

[0012] Furthermore, the four guide pillars are respectively adapted to the four guide holes, and two miniature protective frames are fixedly connected to the upper surface of the lower mold, with the middle bending plate located between the two miniature protective frames.

[0013] The above scheme, through the combination of guide posts and guide holes, enables precise matching between the bending punch head, the arc bending table, and the central bending plate, thereby improving the bending and shaping effect on metal parts.

[0014] Furthermore, the bending molding die assembly is provided with a limiting platform assembly on its exterior. The limiting platform assembly includes a worktable and slide grooves on both sides of the worktable. L-shaped sliders are slidably connected to the inner walls of the two slide grooves. A support plate is fixedly connected to the top of each L-shaped slider. The bottom surface of the support plate is in contact with the upper surface of the worktable.

[0015] The above solution utilizes a support plate to distribute pressure, thereby enabling stable positioning of the lower mold.

[0016] Furthermore, a miniature telescopic rod assembly is fixedly connected to the upper surface of each of the support plates, and a pressure plate is installed at the top of each of the miniature telescopic rod assemblies.

[0017] The above solution allows the lower pressure plate to move up and down by using a miniature telescopic rod assembly, which facilitates the positioning of the lower mold.

[0018] Furthermore, both L-shaped sliders are fixedly connected to lead screws on their outer surfaces, and the top ends of the two lead screws pass through the interior of the two lower pressure plates and are threaded with nuts.

[0019] With the above solution, when the nut is turned, the lower pressure plate will move downwards, which, together with the lower mold under the pad, can achieve the effect of limiting the lower mold.

[0020] Furthermore, the two lower pressure plates are located on both sides of the lower mold, and the bottom surfaces of the two lower pressure plates are in close contact with the upper surface of the lower mold.

[0021] The above scheme defines the position of the lower pressure plate. When the lower pressure plate moves downward, it can press down and position the two sides of the lower mold onto the upper surface of the worktable, thus facilitating the subsequent bending and shaping of the metal parts.

[0022] Furthermore, a drive assembly is provided above the workbench. The drive assembly includes a fixed plate fixedly connected to the upper surface of the workbench. A hydraulic cylinder is installed on the top of the fixed plate. A connecting assembly is fixedly connected to the output end of the hydraulic cylinder. The upper mold is installed at the bottom of the connecting assembly.

[0023] The above solution allows for easy driving of the upper mold and corresponding components to perform stamping and bending of metal parts, making it convenient to use.

[0024] Beneficial effects

[0025] This metal part bending and shaping mold, through the synergistic action of a four-bar connector, a central bending plate, a main telescopic rod assembly, and a telescopic spring, provides effective buffering during the bending and stamping process, significantly absorbing impact force, protecting mold components, extending mold life, and improving the forming effect of tough materials or large-angle bending. The pad plate and positioning block cooperate with the slide groove to achieve rapid pre-positioning of the lower mold on the worktable. The micro telescopic rod assembly enables the lower pressure plate to move up and down. Combined with the locking action of the screw and nut, the lower mold is efficiently and stably pressed and fixed on both sides of the worktable surface, greatly improving installation efficiency and positioning firmness. The precise fit of the four guide pillars and corresponding guide holes ensures that the upper mold drives the bending stamping head to accurately align with the arc bending table and the central bending plate, greatly improving the bending accuracy and shaping quality of metal parts. The overall structure is reasonably designed and easy to operate, solving the problems of insufficient buffering, cumbersome positioning, and poor stability of traditional molds. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall front view of the structure of this application;

[0027] Figure 2 This is a schematic diagram of the overall side view of the structure of this application;

[0028] Figure 3 This is a first partial top view of the structure of this application;

[0029] Figure 4 This is a partial top view of the structure of this application;

[0030] Figure 5 This is a partial planar structural diagram of the structure of this application.

[0031] In the picture:

[0032] 1. Bending and shaping mold assembly; 101. Upper mold; 102. Bending punch head; 103. Pad block; 104. Guide column; 105. Lower mold; 106. Pad plate; 107. Positioning block; 108. Arc-shaped bending table; 109. Four-bar connector; 110. Middle bending plate; 111. U-shaped frame; 112. Main telescopic rod assembly; 113. Telescopic spring; 114. Miniature protective frame; 115. Fixing block; 116. Guide hole; 2. Limiting platform assembly; 201. Workbench; 202. Slide groove; 203. L-shaped slider; 204. Support plate; 205. Miniature telescopic rod assembly; 206. Lower pressure plate; 207. Lead screw; 208. Nut; 3. Drive assembly; 301. Fixing plate; 302. Hydraulic cylinder; 303. Connecting assembly. Detailed Implementation

[0033] 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.

[0034] Please see Figure 1 , Figure 2 and Figure 3 This embodiment of a metal part bending and shaping mold includes a bending and shaping mold assembly 1, which includes an upper mold 101 and a lower mold 105. A bending punch head 102 is fixedly connected to the bottom surface of the upper mold 101. Pads 103 are fixedly connected to the four corners of the bottom surface of the upper mold 101. A guide post 104 is fixedly connected to the bottom end of each pad 103. Pads 106 are fixedly connected to both sides of the bottom surface of the lower mold 105. A positioning block 107 is fixedly connected to the bottom surface of each pad 106. The two positioning blocks 107 are slidably sleeved in the inner walls of the two slide grooves 202, which facilitates the subsequent locking of the lower mold 105.

[0035] Please see Figure 3 , Figure 4 and Figure 5The upper surface of the lower mold 105 is fixedly connected to two symmetrical arc-shaped bending tables 108. A four-bar connector 109 is slidably fitted inside the lower mold 105. A middle bending plate 110 is fixedly connected to the top of the four-bar connector 109. A U-shaped frame 111 is fixedly connected to the bottom surface of the lower mold 105. A main telescopic rod assembly 112 is installed on the inner wall of the U-shaped frame 111. The top of the main telescopic rod assembly 112 is fixedly connected to the bottom of the four-bar connector 109. A telescopic spring 113 is provided between the four-bar connector 109 and the main telescopic rod assembly 112. The two ends of the telescopic spring 113 are respectively fixedly connected to the four-bar connector 109 and the main telescopic rod assembly 112. On the surface of the U-shaped frame 111, fixed blocks 115 are fixedly connected to the four corners of the upper surface of the lower mold 105. Each fixed block 115 has a guide hole 116 inside. The four guide posts 104 are respectively matched with the four guide holes 116. Two miniature protective frames 114 are fixedly connected to the upper surface of the lower mold 105. The middle bending plate 110 is located between the two miniature protective frames 114. Through the cooperation of the guide posts 104 and the guide holes 116, the precise cooperation between the bending punch head 102, the arc bending table 108 and the middle bending plate 110 can be achieved, which improves the bending and shaping effect of metal parts.

[0036] Please see Figure 1 , Figure 2 and Figure 4 The bending molding die assembly 1 is externally provided with a limiting platform assembly 2. The limiting platform assembly 2 includes a worktable 201 and slide grooves 202 opened on both sides of the worktable 201. L-shaped sliders 203 are slidably connected to the inner walls of the two slide grooves 202. A support plate 204 is fixedly connected to the top of each L-shaped slider 203. The bottom surface of the support plate 204 is in contact with the upper surface of the worktable 201. The support plate 204 can achieve the effect of dispersing pressure, thereby achieving stable limiting of the lower die 105. A micro telescopic rod assembly 205 is fixedly connected to the upper surface of each support plate 204. A lower pressure plate 206 is installed at the top of each micro telescopic rod assembly 205. The micro telescopic rod assembly 205 can make the lower pressure plate 206 move up and down, thereby facilitating the positioning of the lower die 105.

[0037] Please see Figure 3 , Figure 4 and Figure 5Two L-shaped sliders 203 are fixedly connected to lead screws 207 on their outer surfaces. The top ends of the two lead screws 207 pass through the interior of the two lower pressure plates 206 and are threaded with nuts 208. When the nuts 208 are turned, the lower pressure plates 206 will move downward. In conjunction with the lower mold 105 below the pad 106, the lower mold 105 can be limited. The two lower pressure plates 206 are located on both sides of the lower mold 105, and the bottom surfaces of the two lower pressure plates 206 are in close contact with the upper surface of the lower mold 105, which limits the position of the lower pressure plates 206. When the lower pressure plates 206 move downward, the two sides of the lower mold 105 can be pressed down and positioned on the upper surface of the worktable 201, which facilitates the subsequent bending and shaping of the metal parts.

[0038] Please see Figure 1 and Figure 2 A drive assembly 3 is provided above the workbench 201. The drive assembly 3 includes a fixing plate 301 fixedly connected to the upper surface of the workbench 201. A hydraulic cylinder 302 is mounted on the top of the fixing plate 301. A connecting assembly 303 is fixedly connected to the output end of the hydraulic cylinder 302. The upper die 101 is mounted on the bottom of the connecting assembly 303. The drive assembly 3 allows for convenient driving of the upper die 101 and corresponding components to perform stamping and bending operations on metal parts, making it convenient to use.

[0039] In this embodiment, the synergistic effect of the four-bar connector 109, the central bending plate 110, the main telescopic rod assembly 112, and the telescopic spring 113 provides effective buffering during the bending stamping process, significantly absorbing impact force, protecting mold components, and extending mold life, while improving the forming effect of tough materials or large-angle bending. The pad 106 and the positioning block 107 cooperate with the slide groove 202 to achieve rapid pre-positioning of the lower mold 105 on the worktable 201. The micro telescopic rod assembly 205 gives the lower pressure plate 206 the ability to move up and down, and combined with the locking mechanism of the lead screw 207 and the nut 208, it efficiently completes the pressing and fixing of both sides of the lower mold 105 on the upper surface of the worktable 201, taking into account both efficiency and stability. The four guide pillars 104 are precisely matched with the corresponding guide holes 116 to ensure that the upper mold 101 drives the bending stamping head 102 to accurately align with the arc bending table 108 and the central bending plate 110, which greatly improves the bending accuracy and shaping quality of the metal parts. The overall structure is reasonably designed and easy to operate, systematically solving the problems of insufficient buffering, cumbersome positioning and poor stability of traditional molds.

[0040] The working principle of the above embodiment is as follows: In use, the metal part to be bent is first placed on the upper surface of the lower mold 105, located between the two arc-shaped bending tables 108, and in contact with the middle bending plate 110. The lower mold 105 is initially positioned in the groove 202 on the upper surface of the workbench 201 by the pad plate 106 and the positioning block 107. Then, the limiting platform assembly 2 is operated, and the nuts 208 on both sides are turned, which drives the lower pressure plate 206 to move downward along the lead screw 207. Part 205 provides initial downward pressure or stroke assistance, causing the lower pressure plate 206 to tightly press against the upper surfaces of both sides of the lower die 105. Combined with the support plate 204 and the L-shaped slider 203 within the slide groove 202, the lower die 105 is securely locked onto the worktable 201. The drive assembly 3 is activated, and the piston rod of the hydraulic cylinder 302 pushes the upper die 101 downwards via the connecting assembly 303. The bent punch head 102, fixed to the bottom surface of the upper die 101, descends accordingly. Simultaneously, the upper... The guide posts 104 at the four corners of the mold 101 are precisely inserted into the guide holes 116 on the corresponding fixing blocks 115 to ensure mold closing accuracy. The bending punch head 102 first contacts the metal part and applies pressure, forcing it to bend downwards. The middle part of the metal part contacts the upper surface of the middle bending plate 110. After the middle bending plate 110 is subjected to downward pressure, it slides downwards inside the lower mold 105 through the four-bar connector 109 at its bottom, while compressing the main telescopic rod assembly 112 and the telescopic spring 113. This process absorbs the impact force of the punching, provides a buffer space for the plastic deformation of the metal part, reduces the rigid impact of the mold, and protects the moving parts such as the four-bar connector 109 and the middle bending plate 110. The miniature protective frame 114 protects the moving areas on both sides of the middle bending plate 110. As the upper mold 101 continues to descend, the metal part is precisely shaped into the required bending shape under the combined action of the bending punch head 102, the two arc-shaped bending tables 108, and the middle bending plate 110 with buffer function.

[0041] 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 piece bending and forming die comprising a bending and forming die assembly (1), characterized in that: The curved plastic mold assembly (1) comprises an upper mold (101) and a lower mold (105), the bottom surface of the upper mold (101) is fixedly connected with a curved stamping head (102), four corners of the bottom surface of the upper mold (101) are fixedly connected with pads (103), and the bottom end of each pad (103) is fixedly connected with a guide column (104); The upper surface of the lower mold (105) is fixedly connected with two symmetrical arc-shaped bending tables (108), the inside of the lower mold (105) is slidably sleeved with a four-bar connecting piece (109), the top end of the four-bar connecting piece (109) is fixedly connected with a middle bending plate (110), the bottom surface of the lower mold (105) is fixedly connected with a U-shaped frame (111), the inner wall of the U-shaped frame (111) is installed with a main telescopic rod assembly (112), the top end of the main telescopic rod assembly (112) is fixedly connected with the bottom end of the four-bar connecting piece (109), a telescopic spring (113) is arranged between the four-bar connecting piece (109) and the main telescopic rod assembly (112), and the two ends of the telescopic spring (113) are fixedly connected to the surfaces of the four-bar connecting piece (109) and the U-shaped frame (111) respectively.

2. A metal part bending and forming die according to claim 1, characterized in that: The bottom surface of the lower mold (105) is fixedly connected with pads (106), and the bottom surface of each pad (106) is fixedly connected with a positioning block (107).

3. The metal part bending and forming die according to claim 1, characterized in that: The bottom surface of the lower mold (105) is fixedly connected with pads (106), and the bottom surface of each pad (106) is fixedly connected with a positioning block (107).

4. The metal part bending and forming die of claim 1, wherein: The top end of each L-shaped sliding block (203) is fixedly connected with a supporting plate (204), and the bottom surface of the supporting plate (204) is in contact with the upper surface of the workbench (201).

5. A metal part bending and forming die according to claim 4, characterized in that: The top end of each L-shaped sliding block (203) is fixedly connected with a supporting plate (204), and the bottom surface of the supporting plate (204) is in contact with the upper surface of the workbench (201).

6. A metal part bending and forming die according to claim 5, characterized in that: The top end of each L-shaped sliding block (203) is fixedly connected with a supporting plate (204), and the bottom surface of the supporting plate (204) is in contact with the upper surface of the workbench (201).

7. A metal part bending and forming die according to claim 5, characterized in that: The top end of each L-shaped sliding block (203) is fixedly connected with a supporting plate (204), and the bottom surface of the supporting plate (204) is in contact with the upper surface of the workbench (201). The top end of each L-shaped sliding block (203) is fixedly connected with a supporting plate (204), and the bottom surface of the supporting plate (204) is in contact with the upper surface of the workbench (201).

8. The metal part bending and forming die of claim 4, wherein: The top of the workbench (201) is provided with a driving assembly (3), the driving assembly (3) includes a fixed plate (301) fixedly connected to the upper surface of the workbench (201), the top of the fixed plate (301) is provided with a hydraulic cylinder (302), and the output end of the hydraulic cylinder (302) is fixedly connected with a connecting assembly (303); the upper mold (101) is installed at the bottom of the connecting assembly (303).

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