A punch-bending die

Abstract

The utility model relates to a punch bending die, including upper die and lower die, the lower die includes: swing insert, one side of the upper end surface of swing insert is equipped with punch platform, the other side is equipped with the two upward bulging convex part of interval arrangement, and the installation cavity has between two convex parts, swing block is connected with swing insert locking through installation cavity, fixed block, with the side of swing insert away from punch platform abuts, the fixed block has the installation groove that opens to swing insert, the installation groove is configured with the side of swing, swing block abuts, the top rod, a plurality of top rod supports the bottom of swing insert.

Description

Technical Field

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

[0002] Existing bending dies are generally one-time forming dies. During continuous stamping, the material thickness is too great and the friction between the formed part and the material is too large. This can easily cause excessive material marks, deep marks, and pits on the back of the product at the bending point, which cannot meet the customer's product quality requirements. Utility Model Content

[0003] In view of the above situation, it is necessary to propose a stamping bending die to improve the quality of bent products.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a stamping and bending die, comprising an upper die and a lower die.

[0005] The lower mold includes:

[0006] The rocking insert has a stamping platform on one side of its upper end face and two upwardly protruding parts spaced apart on the other side, with a mounting cavity between the two protrusions.

[0007] The rocking block is locked to the rocking insert through the mounting cavity;

[0008] A fixed block abuts against the side of the rocking insert away from the stamping platform. The fixed block has a mounting groove facing the opening of the rocking insert. A moving shaft is disposed in the mounting groove, and the moving shaft abuts against the rocking block.

[0009] A push rod, a plurality of the push rods supporting the bottom of the rocking insert;

[0010] The upper die includes a first upper die and a second upper die; the rocking insert includes a first rocking insert and a second rocking insert; the rocking block includes a first rocking block and a second rocking block; and the fixing block includes a first fixing block and a second fixing block. The first upper die, the first rocking insert, the first rocking block, and the first fixing block are fitted together as a set; the second upper die, the second rocking insert, the second rocking block, and the second fixing block are fitted together as a set; the angle between the first rocking block and the stamping platform is preset to a first angle, and the angle between the second rocking block and the stamping platform is preset to a second angle. Two angles, the first angle being greater than 90 degrees and the second angle being 90 degrees; the mounting cavity of the first rocking insert has a gap with the side of the protrusion near the stamping platform, the side end face of the second rocking insert is flush with or extends beyond the side end face of the protrusion; the bottom corner of the first upper die facing the fixed block is configured as a chamfered bevel adapted to the first angle; the bottom corner of the second upper die facing the fixed block is configured as an arc chamfer, a portion of the first upper die extends into the protrusion of the first rocking block, and the second upper die is located outside the protrusion of the second rocking block.

[0011] Furthermore, the mounting cavity is provided with a limiting groove that matches the bottom of the swing block to limit the angle between the swing block and the stamping platform.

[0012] Furthermore, the stamping platform has at least one through hole on each side corresponding to the upper die.

[0013] Furthermore, the protrusion of the first rocking insert protrudes laterally away from the stamping platform and is connected to the side of the first rocking insert in a concave arc shape. The side of the first fixing block facing the rocking insert is provided with a convex arc shape that matches the concave arc shape.

[0014] Furthermore, the protrusion of the second rocking insert protrudes laterally away from the stamping platform and is obliquely connected to the side of the second rocking insert, and the side of the second fixing block facing the rocking insert is provided with a matching slope.

[0015] Furthermore, the first rocking insert has a first concave arc portion between its protrusion and the stamping platform, and the second rocking insert has a second concave arc portion between its protrusion and the stamping platform, wherein the radius of the first concave arc portion is smaller than the radius of the second concave arc portion.

[0016] Furthermore, the first angle is 135 degrees.

[0017] Furthermore, the inner side of the mounting cavity of the second rocking insert is located between the side end face of the protrusion near the stamping platform and the bottom of the protrusion connected to the stamping platform.

[0018] Furthermore, the side of the rocking insert also has a clearance hole that communicates with the mounting cavity in the vertical direction. The width of the clearance hole is smaller than the width of the mounting cavity, and a pin is provided at the clearance hole.

[0019] Furthermore, the width of the moving shaft is greater than the width of the rocking block.

[0020] The beneficial effects of this utility model are as follows: It employs at least two sets of molds. The first set of molds consists of a first upper mold, a first rocking insert, a first rocking block, and a first fixed block, all fitted together. The second set of molds consists of a second upper mold, the rocking insert, the second rocking block, and the second fixed block. In the first set of molds, the first angle between the first rocking block and the stamping platform of the first rocking insert is greater than 90 degrees, and a portion of the first upper mold extends into the protrusion, allowing the tool to be stamped into an obtuse angle first, protecting the bent portion of the product. In the second set of molds, the second angle between the second rocking block and the stamping platform of the second rocking insert is equal to 90 degrees, allowing the product to be stamped into a perpendicular angle. This secondary stamping process avoids excessive material marks, deep imprints, and pits on the back of the bent area. A fixed block is provided, containing a moving shaft that abuts against the rocking block to ensure the stamping angle. The moving shaft can be replaced as needed, making maintenance convenient and cost-effective. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a stamping and bending die according to an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of the first set of stamping and bending dies according to an embodiment of this utility model;

[0023] Figure 3 This is a schematic diagram of the structure of a stamping and bending die at a first angle according to an embodiment of the present invention;

[0024] Figure 4 This is an exploded structural diagram of the first set of molds for a stamping and bending die according to an embodiment of this utility model;

[0025] Figure 5 This is a schematic diagram of the structure of the second set of molds for a stamping and bending die according to an embodiment of this utility model;

[0026] Figure 6 This is a schematic diagram of the second angle of a stamping and bending die according to an embodiment of the present invention;

[0027] Figure 7This is an exploded structural diagram of the second set of molds for a stamping and bending die according to an embodiment of this utility model.

[0028] Label Explanation:

[0029] 100. Upper mold; 110. First upper mold; 111. Beveled edge; 112. Clearance groove;

[0030] 120. Second upper mold; 121. Curved chamfer; 200. Rocking insert; 210. First rocking insert;

[0031] 211. First angle; 212. First concave arc portion; 220. Second rocking insert; 221. Second angle;

[0032] 222. Second concave arc portion; 230. Stamping platform; 231. Perforation; 240. Protrusion; 250. Mounting cavity;

[0033] 251. Limiting groove; 260. Alternating hole; 261. Pin; 300. Swing block;

[0034] 310. First pendulum block; 320. Second pendulum block; 400. Fixed block;

[0035] 410. First fixing block; 411. Convex arc portion; 420. Second fixing block; 421. Slope;

[0036] 430, mounting slot; 440, moving shaft; 500, push rod; 600, product. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description of a stamping and bending die, in conjunction with the accompanying drawings and embodiments, is provided. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the scope of the utility model.

[0038] Please refer to Figures 1-7 A stamping and bending die, comprising an upper die 100 and a lower die.

[0039] The lower mold includes:

[0040] Shaking the insert 200, one side of the upper end face of the insert 200 is provided with a stamping platform 230 and the other side is provided with two upwardly protruding protrusions 240 spaced apart, and there is an installation cavity 250 between the two protrusions 240.

[0041] The rocker block 300 is locked to the rocker insert 200 through the mounting cavity 250;

[0042] The fixed block 400 abuts against the side of the rocking insert 200 away from the stamping platform 230. The fixed block 400 has a mounting groove 430 that faces the opening of the rocking insert 200. A moving shaft 440 is disposed in the mounting groove 430, and the moving shaft 440 abuts against the rocking block 300.

[0043] Top rod 500, several top rods 500 support the bottom of rocking insert 200;

[0044] The upper die 100 includes a first upper die 110 and a second upper die 120; the rocking insert 200 includes a first rocking insert 210 and a second rocking insert 220; the rocking block 300 includes a first rocking block 310 and a second rocking block 320; and the fixing block 400 includes a first fixing block 410 and a second fixing block 420. The first upper die 110, the first rocking insert 210, the first rocking block 310, and the first fixing block 410 are fitted together as a set; the second upper die 120, the second rocking insert 220, the second rocking block 320, and the second fixing block 420 are fitted together as a set. The angle between the first rocking block 310 and the stamping platform 230 is preset to a first angle 211; the angle between the second rocking block 320 and the stamping platform 230 is... The angle between them is preset to a second angle 221, the first angle 211 is greater than 90 degrees, and the second angle 221 is 90 degrees; the mounting cavity 250 of the first rocking insert 210 and the side of the protrusion 240 near the stamping platform 230 have a gap, and the side end face of the second rocking insert is flush with or extends beyond the side end face of the protrusion 240; the bottom corner of the first upper die 110 facing the fixed block 400 is configured as a chamfer 111 that matches the first angle 211; the bottom corner of the second upper die 120 facing the fixed block 400 is configured as an arc chamfer 121, a part of the first upper die 110 extends into the protrusion 240 of the first rocking block, and the second upper die 120 is located outside the protrusion 240 of the second rocking block.

[0045] At least two sets of molds are used in combination. The first set of molds consists of a first upper mold 110, a first rocking insert 210, a first rocking block 310, and a first fixing block 410. The second set of molds consists of a second upper mold 120, a rocking insert 200, a second rocking block 320, and a second fixing block 420. The first angle 211 between the first rocking block 310 and the stamping platform 230 of the first rocking insert 210 of the first set of molds is greater than 90 degrees, which allows the tool to be stamped into an obtuse angle and protect the bent part of the product 600. The second angle 221 between the second rocking block 320 and the stamping platform 230 of the second rocking insert 220 of the second set of molds is equal to 90 degrees, which allows the product 600 to be stamped into a vertical angle. Through secondary stamping, the phenomenon of excessive material marks, deep marks, and pits on the back of the bent part can be avoided. A fixed block 400 is provided, and a moving shaft 440 is provided inside the fixed block 400. It can abut against the swing block 300 to ensure the stamping angle. The moving shaft 440 can be replaced as needed, which is convenient and has low maintenance cost.

[0046] Please refer to Figure 4 and Figure 7 The mounting cavity 250 is provided with a limiting groove 251 that matches the bottom of the rocker block 300 to limit the angle between the rocker block 300 and the stamping platform 230. Simultaneously, the support and limiting of the rocker block 300 are strengthened by the connection of the protrusion 240, the abutment of the moving shaft 440, and the portion of the rocker insert 200 that matches the semi-circular portion, thereby improving service life and ensuring the preset angle.

[0047] Please refer to Figures 1-7 The stamping platform 230 has at least one through hole 231 on each side corresponding to the upper die 100. The through hole 231 can be used for positioning with the product 600, that is, positioning holes corresponding to the through hole 231 are provided on the product 600, and the product 600 is positioned by positioning pins.

[0048] Please refer to Figures 1-4 The protrusion 240 of the first rocking insert 210 protrudes laterally away from the stamping platform 230 and is connected to the side of the first rocking insert 210 in a concave arc shape. The first fixing block 410 has a convex arc portion 411 that matches the concave arc shape on the side facing the rocking insert 200. This allows the moving shaft 440 to stably abut against the rocking insert.

[0049] Please refer to Figure 1 and Figures 5-7 The protrusion 240 of the second rocking insert 220 protrudes laterally away from the stamping platform 230 and is obliquely connected to the side of the second rocking insert 220. The second fixing block 420 has a matching ramp 421 on the side facing the rocking insert 200. This allows the moving shaft 440 to stably abut against the rocking insert.

[0050] Please refer to Figures 1-4 The first rocking insert 210 has a first concave arc portion 212 between its protrusion 240 and the stamping platform 230, and the second rocking insert 220 has a second concave arc portion 222 between its protrusion 240 and the stamping platform 230. The radius of the first concave arc portion 212 is smaller than the radius of the second concave arc portion 222. In particular, the length of the protrusion 240 of the first rocking insert 210 is greater than the length of the protrusion 240 of the second rocking insert 220.

[0051] Please refer to Figure 4 Since a portion of the first upper mold 110 extends between the two protrusions 240, in particular, the first upper mold 110 is provided with clearance grooves 112 on both sides to avoid contact with the protrusions 240.

[0052] Preferably, the first angle 211 is 135 degrees. This angle is the preferred angle, but it can also be adjusted as needed, generally between 100 and 150 degrees.

[0053] Please refer to Figure 1 and Figures 5-7 The inner side of the mounting cavity 250 of the second rocking insert 220 is located between the side end face of the protrusion 240 near the stamping platform 230 and the bottom of the protrusion 240 connected to the stamping platform 230. This ensures that the product 600 can be bent at 90 degrees.

[0054] Please refer to Figures 1-7 The side of the rocking insert 200 also has a clearance hole 260 that connects to the mounting cavity 250 in the vertical direction. The width of the clearance hole 260 is smaller than the width of the mounting cavity 250. A pin 261 is provided at the clearance hole 260.

[0055] Preferably, the width of the movable shaft 440 is greater than the width of the rocker block 300. This ensures stable support for the rocker block 300.

[0056] Preferably, the height of the first fixing block 410 is higher than the protrusion 240 of the first swing block 310, and the height of the second fixing block 420 is lower than the protrusion 240 of the second swing block 320.

[0057] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0058] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0059] In summary, the stamping and bending die provided by this utility model employs at least two sets of dies. The first set of dies consists of a first upper die, a first rocking insert, a first rocking block, and a first fixed block, all fitted together. The second set of dies consists of a second upper die, the rocking insert, a second rocking block, and a second fixed block, all fitted together. In the first set of dies, the first angle between the first rocking block and the stamping platform of the first rocking insert is greater than 90 degrees, allowing the tool to be stamped into an obtuse angle and protecting the bent portion of the product. In the second set of dies, the second angle between the second rocking block and the stamping platform of the second rocking insert is equal to 90 degrees, allowing the product to be stamped into a perpendicular angle. This secondary stamping process avoids excessive material marks, deep indentations, or pits on the back of the bent area. A fixed block with a movable shaft inside provides support against the rocking block, ensuring the stamping angle. The movable shaft can be replaced as needed, making maintenance convenient and cost-effective.

[0060] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A stamping and bending die, comprising an upper die and a lower die, characterized in that, The lower mold includes: The rocking insert has a stamping platform on one side of its upper end face and two upwardly protruding parts spaced apart on the other side, with a mounting cavity between the two protrusions. The rocking block is locked to the rocking insert through the mounting cavity; A fixed block abuts against the side of the rocking insert away from the stamping platform. The fixed block has a mounting groove facing the opening of the rocking insert. A moving shaft is disposed in the mounting groove, and the moving shaft abuts against the rocking block. A push rod, a plurality of the push rods supporting the bottom of the rocking insert; The upper die includes a first upper die and a second upper die; the rocking insert includes a first rocking insert and a second rocking insert; the rocking block includes a first rocking block and a second rocking block; and the fixing block includes a first fixing block and a second fixing block. The first upper die, the first rocking insert, the first rocking block, and the first fixing block are fitted together as a set; the second upper die, the second rocking insert, the second rocking block, and the second fixing block are fitted together as a set; the angle between the first rocking block and the stamping platform is preset to a first angle, and the angle between the second rocking block and the stamping platform is preset to a second angle. Two angles, the first angle being greater than 90 degrees and the second angle being 90 degrees; the mounting cavity of the first rocking insert has a gap with the side of the protrusion near the stamping platform, the side end face of the second rocking insert is flush with or extends beyond the side end face of the protrusion; the bottom corner of the first upper die facing the fixed block is configured as a chamfered bevel adapted to the first angle; the bottom corner of the second upper die facing the fixed block is configured as an arc chamfer, a portion of the first upper die extends into the protrusion of the first rocking block, and the second upper die is located outside the protrusion of the second rocking block.

2. The stamping and bending die according to claim 1, characterized in that, The mounting cavity is provided with a limiting groove that matches the bottom of the swing block to limit the angle between the swing block and the stamping platform.

3. The stamping and bending die according to claim 1, characterized in that, The stamping platform has at least one through hole on each side corresponding to the upper die.

4. A stamping and bending die according to claim 1, characterized in that, The protrusion of the first rocking insert protrudes laterally away from the stamping platform and is connected to the side of the first rocking insert in a concave arc shape. The side of the first fixing block facing the rocking insert is provided with a convex arc shape that matches the concave arc shape.

5. A stamping and bending die according to claim 1, characterized in that, The protrusion of the second rocking insert protrudes laterally away from the stamping platform and is obliquely connected to the side of the second rocking insert. The side of the second fixing block facing the rocking insert is provided with a matching slope.

6. A stamping and bending die according to claim 1, characterized in that, The first rocking insert has a first concave arc between its protrusion and the stamping platform, and the second rocking insert has a second concave arc between its protrusion and the stamping platform. The radius of the first concave arc is smaller than the radius of the second concave arc.

7. A stamping and bending die according to claim 1, characterized in that, The first angle is 135 degrees.

8. A stamping and bending die according to claim 1, characterized in that, The inner side of the mounting cavity of the second rocking insert is located between the side end face of the protrusion near the stamping platform and the bottom of the protrusion connected to the stamping platform.

9. A stamping and bending die according to claim 1, characterized in that, The side of the rocking insert also has a clearance hole that communicates with the mounting cavity in the vertical direction. The width of the clearance hole is smaller than the width of the mounting cavity, and a pin is provided at the clearance hole.

10. A stamping and bending die according to claim 1, characterized in that, The width of the moving shaft is greater than the width of the swing block.

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