Cold stamping drawing die

Abstract

The utility model relates to die technical field especially relates to a kind of cold stamping drawing die, it includes stamping drawing die, the stamping drawing die includes fixed block and cushion block;Fixed block inside plug-in installation has punch fixed column, the punch fixed column lower side port place fixed mounting has punch, the product inner diameter guide block is fixedly installed in the punch lower end, the cushion block upper side upper side port circle fixed mounting has matrix, the matrix inside slide is provided with knockout ejector rod, knockout ejector rod lower end slide passes to cushion block bottom and knockout ejector rod bottom fixed mounting has knockout ejector rod fixed block.The stamping drawing die of utility model setting, can satisfy the production requirement of customer product, and product has no opening uneven state, need not increase rotary cutting structure, namely satisfy the requirement and demand of customer again satisfy the cost control of pipe control, strengthen practicality.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to a cold stamping and stretching mold. Background Technology

[0002] In the field of cold stamping and stretch forming, stretching dies are used in the bending structure of semi-finished products. There are technical problems that need to be solved. When the product is bent, excess material is prone to occur at the angle formed by the two walls. The radius (R) at this angle needs to be designed to be as small as possible to ensure smooth assembly with other components. This results in the excess material at the angle not being able to extend and diffuse to other areas, which in turn causes the product opening to bulge and become uneven due to material accumulation.

[0003] This problem has led to a significant increase in costs in actual production. Specifically, in the continuous die high-tonnage drawing process, although the uneven protrusions at the opening can be smoothed out by the subsequent workstations of the high-tonnage equipment, this method has obvious limitations—a large number of workpieces for the corresponding workstations are required to complete the smoothing process, which undoubtedly results in a significant waste of resources. For drawing precision dies, conventional drawing processes also cannot avoid the problem of uneven openings, usually requiring a rotary cutting process in subsequent steps to smooth out the protrusions. However, this approach not only increases production costs but also increases the number of machine tool workstations, making it ultimately counterproductive.

[0004] In summary, the existing technology for bending semi-finished products using stretching dies suffers from uneven openings due to excess material. The solutions to these problems are either too costly or involve complicated procedures, failing to meet the demands for cost control and production efficiency during the production process. Therefore, we propose a cold stamping stretching die. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a cold stamping and stretching die.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A cold stamping and drawing die includes a stamping and drawing die, which includes a fixed block and a pad block; a punch fixing post is inserted and installed inside the fixed block, a punch is fixedly installed at the lower port of the punch fixing post, a product inner diameter guide block is fixedly installed at the lower end of the punch, a die cavity is fixedly installed around the upper port of the pad block, and an ejector rod is slidably arranged inside the die cavity.

[0008] Furthermore, the inner side of the concave mold is provided with folded points.

[0009] Furthermore, the lower end of the ejector rod slides through to the bottom of the pad block, and an ejector rod fixing block is fixedly installed at the bottom of the ejector rod.

[0010] Furthermore, a snap-fit ​​assembly is provided on the side wall of the fixing block. The snap-fit ​​assembly includes a structural frame, which is fixedly installed on the side wall of the fixing block. A plug rod is slidably inserted into the structural frame, and a locking rod is fixedly connected to the inner end of the plug rod. An insertion hole is opened on the side wall of the fixing block, and the locking rod is slidably inserted into the inner side of the insertion hole. A locking hole adapted to the locking rod is opened on the side wall of the punch fixing column.

[0011] Furthermore, a compression spring is fixedly connected between the bottom of the structural frame and the locking rod, and a pull cap is fixedly installed on the outer end of the insertion rod.

[0012] Furthermore, a bearing seat is fixedly installed on the inner wall of the structural frame, a rotating seat is rotatably installed on the bearing seat, a torsion spring is sleeved between the rotating seat and the bearing seat, a limit plate is fixedly connected to the side of the rotating seat, and the limit plate abuts against the upper end of the locking rod.

[0013] Compared with related technologies, the cold stamping and stretching die proposed in this utility model has the following beneficial effects:

[0014] In this utility model, a cold stamping and stretching die is provided. The product is conveyed to this process by the conveyor fingers of the previous station. During operation, the upper die and the product are driven downward by the machine tool (fixed block, punch fixing column, punch, product inner diameter guide), and then the product is driven into the die cavity. When the punch and the die cavity come into contact and close, a concave fold point (i.e., fold point) is formed. Finally, the ejector pin ejects the product. This process can meet the production requirements of the customer's product, and the product has no opening or unevenness. There is no need to add a rotary cutting structure, which satisfies the customer's requirements and needs while also meeting cost control, thus enhancing practicality.

[0015] The additional snap-fit ​​assembly makes the installation and removal of the punch fixing post very convenient, which in turn facilitates the stamping production of products with different wall thicknesses by changing different punches, thus improving the flexibility and convenience of use. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of Example 1;

[0017] Figure 2 This is a schematic diagram of the three-dimensional cross-sectional structure of Example 1;

[0018] Figure 3 This is a three-dimensional structural diagram of Example 2;

[0019] Figure 4 This is a partial three-dimensional disassembled structural diagram of Example 2;

[0020] Figure 5 This is a three-dimensional structural diagram of the snap-fit ​​component in Embodiment 2.

[0021] In the diagram: 1. Fixing block; 2. Punch fixing post; 3. Punch; 4. Product inner diameter guide block; 5. Pad block; 6. Die; 7. Ejector pin; 8. Folded point product; 9. Ejector pin fixing block; 10. Snap-fit ​​assembly; 101. Structural frame; 102. Insert rod; 103. Pull cap; 104. Locking rod; 105. Compression spring; 106. Shaft seat; 107. Rotary seat; 108. Torsion spring; 109. Limiting plate; 11. Insertion hole. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Example 1:

[0024] Reference Figures 1-2 A cold stamping and stretching die includes a stamping and stretching die, which includes a fixed block 1 and a pad block 5. A punch fixing post 2 is inserted and installed inside the fixed block 1. A punch 3 is fixedly installed at the lower end of the punch fixing post 2. A product inner diameter guide block 4 is fixedly installed at the lower end of the punch 3. A die 6 is fixedly installed around the upper end of the pad block 5. An ejector pin 7 is slidably arranged inside the die 6. The lower end of the ejector pin 7 slides through to the bottom of the pad block 5, and an ejector pin fixing block 9 is fixedly installed at the bottom of the ejector pin 7. A folding point product 8 is provided inside the die 6.

[0025] The working principle of the cold stamping and drawing die provided by this utility model is as follows:

[0026] During operation, the conveyor fingers from the previous station deliver the product to be processed into the die 6 of this process. Subsequently, the machine tool drives the upper die (including the fixing block 1, punch fixing post 2, punch 3, and product inner diameter guide block 4) downward. The product inner diameter guide block 4 first contacts the inner diameter of the product to be processed, playing a precise positioning and guiding role for the product, ensuring the accuracy of subsequent processing. As the upper die continues to move downward, the punch 3 gradually enters the die 6 and cooperates with the die 6 to perform stamping and stretching processing on the product. When the punch 3 and the die 6 come into contact and close, their contour structures interact to form a recessed fold point (i.e., fold point) at a specific position on the product, thus obtaining the fold point product 8. The formation of this fold point can effectively disperse excess material at the bending point of the product, avoiding the problem of product opening protrusion and unevenness caused by material accumulation in traditional processing.

[0027] After processing, the machine tool drives the upper mold to reset upward. At this time, the ejector pin 7, which is slidably set inside the die 6, moves upward under the action of external power. The ejector pin fixing block 9 at the bottom ensures the stability and synchronicity of the movement of the ejector pin 7. The ejector pin 7 ejects the processed pleated product 8 from inside the die 6, completing the entire stamping and stretching process.

[0028] Through the synergistic effect of the above components (fixed block 1, punch fixing column 2, punch 3, product inner diameter guide block 4, pad block 5, die 6, ejector pin 7, ejector pin fixing block 9), efficient and precise processing of the product is achieved, and the processed product has no unevenness at the opening, eliminating the need for subsequent rotary cutting and other processes.

[0029] Example 2:

[0030] Reference Figures 3-5 A snap-fit ​​assembly 10 is provided on the side wall of the fixing block 1. The snap-fit ​​assembly 10 includes a structural frame 101, which is fixedly installed on the side wall of the fixing block 1. A plug rod 102 is slidably inserted into the structural frame 101. A locking rod 104 is fixedly connected to the inner end of the plug rod 102. An insertion hole 11 is opened on the side wall of the fixing block 1. The locking rod 104 is slidably inserted into the inner side of the insertion hole 11. A locking hole that matches the locking rod 104 is opened on the side wall of the punch fixing column 2. A compression spring 105 is fixedly connected between the bottom of the structural frame 101 and the locking rod 104. A pull cap 103 is fixedly installed on the outer end of the plug rod 102.

[0031] With the above-described configuration, under the restoring force of the compression spring 105, the locking rod 104 is inserted into the inner side of the locking hole of the punch fixing post 2, thereby completing the fixing and locking function of the punch fixing post 2 inserted into the inner side of the fixing block 1. When it is necessary to unlock the inserted punch fixing post 2, the limiting plate 109 needs to be rotated to one side to avoid the limiting plate 109 forming an abutment and limiting effect on the end of the locking rod 104. Then, pull the pull cap 103 to overcome the restoring force of the compression spring 105 and drive the locking rod 104 to slide outward, so that the inner end of the locking rod 104 slides out of the locking hole of the punch fixing post 2. When installing a new punch fixing post 2, the operation is reversed.

[0032] In this method, a bearing seat 106 is fixedly installed on the inner wall of the structural frame 101, a rotating seat 107 is rotatably installed on the bearing seat 106, a torsion spring 108 is sleeved between the rotating seat 107 and the bearing seat 106, a limit plate 109 is fixedly connected to the side of the rotating seat 107, and the limit plate 109 abuts against the upper end of the locking rod 104.

[0033] With the above-mentioned setup, the torsion spring 108 provides torque, causing the rotary seat 107 to drive the limiting plate 109 to rotate to the upper end of the locking rod 104, thereby forming a contacting action on the locking rod 104 and preventing the locking of the inner end of the locking rod 104 from being unstable due to insufficient rebound force of the compression spring 105.

[0034] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A cold stamping and drawing die, characterized in that, It includes a stamping and drawing die, which includes a fixing block (1) and a pad block (5); A punch fixing post (2) is inserted into the inner side of the fixing block (1), a punch (3) is fixedly installed at the lower port of the punch fixing post (2), a product inner diameter guide block (4) is fixedly installed at the lower end of the punch (3), a die (6) is fixedly installed around the upper port of the pad block (5), and an ejector rod (7) is slidably provided inside the die (6).

2. The cold stamping and drawing die according to claim 1, characterized in that, The inner side of the concave mold (6) is provided with pleated product (8).

3. A cold stamping and drawing die according to claim 1, characterized in that, The lower end of the ejector rod (7) slides through to the bottom of the pad (5), and an ejector rod fixing block (9) is fixedly installed at the bottom of the ejector rod (7).

4. A cold stamping and drawing die according to claim 1, characterized in that, A snap-fit ​​assembly (10) is provided on the side wall of the fixing block (1). The snap-fit ​​assembly (10) includes a structural frame (101). The structural frame (101) is fixedly installed on the side wall of the fixing block (1). A plug rod (102) is slidably inserted into the structural frame (101). A locking rod (104) is fixedly connected to the inner end of the plug rod (102). An insertion hole (11) is provided on the side wall of the fixing block (1). The locking rod (104) is slidably inserted into the inner side of the insertion hole (11). A locking hole adapted to the locking rod (104) is provided on the side wall of the punch fixing column (2).

5. A cold stamping and drawing die according to claim 4, characterized in that, A compression spring (105) is fixedly connected between the bottom of the structural frame (101) and the locking rod (104), and a pull cap (103) is fixedly installed on the outer end of the insertion rod (102).

6. A cold stamping and drawing die according to claim 4, characterized in that, A bearing seat (106) is fixedly installed on the inner wall of the structural frame (101). A rotating seat (107) is rotatably installed on the bearing seat (106). A torsion spring (108) is sleeved between the rotating seat (107) and the bearing seat (106). A limiting plate (109) is fixedly connected to the side of the rotating seat (107). The limiting plate (109) abuts against the upper end of the locking rod (104).

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