Cutting, bending and riveting integrated forming die
By designing the cutting, bending and riveting integral molding die, the cutting and bending punch and riveting punch are used to achieve strip cutting, piece bending and PIN foot riveting in a set of molds, which solves the problem of the existing technology. The problem of multiple sets of molds and high labor costs has improved production efficiency.
Patent Information
- Application Number
- CN202421112187.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-21
- Publication Date
- 2025-01-10
- Estimated Expiration
- 2034-05-21
AI Technical Summary
The existing box-shaped product stamping technology requires the use of multiple sets of molds and fixtures in conjunction, resulting in high manufacturing costs, labor-consuming, long molding cycles and low generation efficiency.
Design a cutting, bending and riveting integrated mold, including upper and lower molds, to achieve cutting tape, bending of material sheets and riveting of PIN foot by cutting and bending punches and riveting punches, and use cutting The height difference between the cutting knife and the bending punch structure of the bending punch realizes multifunctional molding in the continuous mold, avoiding the use of multiple sets of molds.
The molding and riveting fixation of the box product in a continuous mold is realized, which reduces mold and labor costs and improves production efficiency.
Smart Images
Figure CN222326328U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of stamping and forming, in particular to a cutting, bending and riveting integrated forming die. Background Art
[0002] The characteristic of the continuous die is that the material is continuously fed and punched according to the set punching step. Each time the punch press punches once, after the material strip enters the continuous die, a product is completed after multiple punching. At present, when the box-shaped product is bent and formed by sheet metal, a long strip riveting hole is first punched on the material strip, and then a sheet structure before bending is formed on the material strip through the material blanking step, and a long strip riveting PIN foot is formed on the sheet, and then the sheet with the long strip riveting hole is bent 90 degrees, and then the sheet with the riveting PIN foot is cut off from the material strip by cutting. After the product is cut off from the material strip, due to the lack of material strip for forward feeding, the continuous die will discharge the semi-finished product from the discharge port, and then the worker will send it into the process die for bending. The riveting PIN foot on the bent product is inserted into the long strip riveting holes of the other two bending edges, and then the worker uses a riveting fixture to extrude and deform the riveting PIN foot so that the adjacent side walls of the box body are riveted together.
[0003] At present, this box body stamping and riveting method requires the coordinated use of multiple sets of molds and fixtures, which has high manufacturing costs, labor consumption, long molding cycle and low production efficiency. Utility Model Content
[0004] In order to overcome the above defects, the utility model provides a cutting, bending and riveting integrated forming die, which realizes the functions of multiple sets of molds and has a simple structure, reduces product production costs and has high production efficiency.
[0005] The utility model adopts a technical solution to solve the technical problem: a cutting, bending and riveting integrated forming die, comprising an upper die and a lower die, the upper die can be lifted and moved and is arranged directly above the lower die, a bending forming block and a cutting blade are fixedly arranged on the lower die, the bending forming block is arranged between the two cutting blades, a cutting and bending punch and a riveting punch are fixedly installed on the lower side of the upper die, the two cutting and bending punches are respectively located directly above the gap between the bending forming block of the lower die and the two cutting blades, and one side of the lower end of the cutting and bending punch is formed to match the cutting blade in the lower die to cut the material strip and A cutting knife structure is formed at the connection point of the edge to be bent of the product, and a bending punch structure is formed on the other side of the lower end of the cutting and bending punch to match the bending forming block and bend the edge to be bent of the product downward, and the height of the cutting knife structure is lower than the height of at least one material thickness of the bending punch structure. An avoidance notch structure is formed on the side of the lower end of the cutting and bending punch close to the bending forming block, and two riveting punches are embedded in the two cutting and bending punches, and the lower end of the riveting punch is directly connected to the avoidance notch structure, and the riveting punch can squeeze the PIN foot extending outward from the outside of the bending edge of the product downward to deform it and press it tightly against the outside of the bending edge of the product.
[0006] As a further improvement of the utility model, the cutter structure at the lower end of the cutting and bending punch is connected with the bending punch structure through an inclined surface.
[0007] As a further improvement of the utility model, the lower edge of the cutting and bending punch and the riveting punch on one side of the bending forming block close to the lower die are arc surfaces, which can tightly contact the surface of the product sheet to be bent and the PIN foot extending outward from the bending edge of the product.
[0008] As a further improvement of the utility model, two cutting blocks are fixedly installed on the lower die, and the two cutting edges are the upper edges of the opposite side walls of the two cutting blocks. A notch groove structure is formed on the side of the cutting edge of the cutting and bending punch close to the lower die, which is opposite to the connection point of the material strip and the edge to be bent of the product. The cutting block can be slidably inserted in the notch groove structure of the cutting and bending punch, and the lower edge of the bottom surface of the notch groove structure forms a cutting knife structure.
[0009] As a further improvement of the present invention, the notch groove structure on the cutting and bending punch is a top-to-bottom penetrating structure, and its cross-section is a trapezoidal structure with an opening size larger than the bottom size. The cutting entry block forms a trapezoidal structure matching the notch groove structure on the cutting and bending punch on the side close to the bending forming block. The trapezoidal structure of the cutting entry block close to the side of the bending forming block can be relatively slidably inserted into the notch groove structure on the cutting and bending punch.
[0010] As a further improvement of the utility model, the upper die comprises an upper die base, an upper clamping plate, a deep fixing plate, a stripping plate and a stripping spring, the upper clamping plate is fixedly installed on the lower side of the upper die base, the stripping plate is fixedly installed on the lower side of the deep fixing plate, the deep fixing plate can be slidably installed on the lower side of the upper clamping plate in the up and down directions, and the stripping spring provides a downward elastic force to the deep fixing plate. A stripping plate pressing block is fixedly embedded on the stripping plate, and the stripping plate pressing block can press the product sheet directly above the bending forming block, and the upper ends of the cutting and bending punch and the riveting punch are fixedly installed on the upper clamping plate, and guide avoidance holes for the cutting and bending punch and the riveting punch to slide and insert are formed on the deep fixing plate and the stripping plate, and the cutting and bending punch and the riveting punch can extend out of the lower side of the stripping plate when the deep fixing plate moves upward relative to the upper clamping plate.
[0011] As a further improvement of the utility model, the lower die includes a lower die plate, a lower pad and a lower die base, the lower pad and the lower die plate are fixedly installed on the upper side of the lower die base in sequence, the bending forming block and the cutting blade are both arranged in the lower die plate, and the lower pad is also provided with a plurality of stripping pins that can slide a set distance in the vertical direction, the bending forming block is provided with stripping holes corresponding to the stripping pins one by one, and a plurality of stripping upper ends can be slidably inserted into the stripping holes, and a stripping spring is also provided in the lower pad, and the stripping spring provides an upward elastic force to the stripping pin so that the stripping pin extends to a set height at the upper end of the bending forming block in the mold opening state.
[0012] As a further improvement of the utility model, a bent sheet positioning structure is further provided in the lower die, and the bent sheet positioning structure can stop and position the bent sheet where the PIN pin is located.
[0013] The beneficial effect of the utility model is as follows: the utility model forms a cutting knife structure for cutting off the connection point between the material strip and the sheet and a bending punch structure for bending the sheet separated from the material strip on both sides of the lower end of the cutting and bending punch respectively, and the two are designed so that the height of the cutting knife structure is lower than the bending punch structure, and the height difference between the two is utilized to achieve the effect that the material strip first cuts off and separates the sheet from the connection point of the material strip, and then bends it. The cutting and bending can be performed successively without affecting each other. At the same time, the application also embeds a riveting punch in the cutting and bending punch, and forms an avoidance notch structure for avoiding the riveting PIN foot on the cutting and bending punch. When bending, it will not interfere with the protruding riveting PIN foot, and after bending in place, the mold continues to descend and the riveting punch squeezes the PIN foot protruding from the long strip hole on the sheet to realize riveting and fixing adjacent bent sheets together. The utility model realizes that the square box product is formed in a set of continuous molds and riveted and fixed to form an integrated structure, avoids the molding of multiple sets of molds, reduces the mold cost and labor cost, and has high production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1This is the main view of the square box product;
[0015] Figure 2 This is the left view of the square box product;
[0016] Figure 3 This is a top view of the square box product;
[0017] Figure 4 Produce drawings for square box products;
[0018] Figure 5 It is a schematic diagram of a continuous die for forming a square box using the structure of the utility model;
[0019] Figure 6 This is the main view of the structural principle of the utility model;
[0020] Figure 7 It is a top view of the material strip before the connection point between the material strip and the edge to be bent of the product is cut off in the utility model;
[0021] Figure 8 It is a top view of the state after the material sheet and the material belt are separated and bent in the utility model;
[0022] Fig. 9 It is a right view of the state after the material sheet and the material belt are separated and bent in the utility model;
[0023] Fig.10 It is a top view of the PIN foot riveting completion state in the utility model;
[0024] Fig.11 This is a right view of the PIN foot riveting completion state in the utility model;
[0025] Fig.12 This is a schematic diagram of the utility model in a mold opening state;
[0026] Fig.13 This is a schematic diagram of the state where the stripping plate and the lower die begin to contact with each other in the utility model;
[0027] Fig.14 This is a schematic diagram of the utility model in a state where the sheet to be bent and the strip are cut off;
[0028] Fig.15 This is a schematic diagram of the utility model in a state where the sheet is bent into place;
[0029] Fig.16 This is a schematic diagram of the utility model in a fully molded state;
[0030] Fig.17 This is the front view of the cutting and bending punch of the utility model;
[0031] Fig.18 It is a left view of the cutting and bending punch of the utility model;
[0032] Fig.19 This is a front view of the riveting punch of the utility model;
[0033] Fig. 20 It is a left side view of the riveting punch of the utility model;
[0034] Fig.21 It is the left view of the cutting block of the utility model. DETAILED DESCRIPTION
[0035] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.
[0036] Embodiment: A cutting, bending, and riveting integrated forming die, comprising an upper die and a lower die, wherein the upper die can be lifted and lowered and is arranged directly above the lower die, a bending forming block 1 and a cutting blade are fixedly arranged on the lower die, the bending forming block 1 is arranged between the two cutting blades, a cutting and bending punch 2 and a riveting punch 3 are fixedly installed on the lower side of the upper die, the two cutting and bending punches 2 are respectively located directly above the gap between the bending forming block 1 and the two cutting blades of the lower die, and a cutting structure is formed on one side of the lower end of the cutting and bending punch 2 to match the cutting blade in the lower die to cut the connection point between the material strip and the edge to be bent of the product 21. A bending punch structure 22 is formed on the other side of the lower end of the cutting and bending punch 2, which matches the bending forming block 1 and bends the edge of the product to be bent downward, and the height of the cutter structure 21 is lower than the bending punch structure 22 by at least one material thickness. An avoidance notch structure is formed on the side of the lower end of the cutting and bending punch 2 close to the bending forming block 1. Two riveting punches 3 are embedded in the two cutting and bending punches 2, and the lower end of the riveting punch 3 is directly connected to the avoidance notch structure. The riveting punch 3 can squeeze the PIN foot 4 extending outward from the bending edge of the product downward to deform it and press it tightly against the outer side of the bending edge of the product.
[0037] In the continuous mold, the first step of the material strip 12 is to punch the guide hole 5 on the material strip, the second step is to punch the long strip rivet hole 6, the third step is to strip the shape, the fourth step is to bend the material piece 7 with the PIN foot 4 90 degrees, and the fifth step is to cut and separate the material piece 8 with the long strip rivet hole from the material strip, bend it, and extrude and rivet the PIN foot 4. In the fifth working step, as the upper die is pressed down, the cutting knife structure 21 of the cutting and bending punch 2 first contacts the cutting point of the material strip. When the die moves downward, the cutting knife structure 21 cooperates with the cutting blade of the lower die to cut the connection point between the material strip and the product to be bent. As the upper die continues to move downward, the bending punch structure 22 of the cutting and bending punch 2 begins to contact and press down the product to be bent piece separated from the material strip until the product to be bent piece is bent 90 degrees. At this time, the PIN foot 4 on the material bent in the lower four working steps just passes through the long riveting hole on the material bent in the fifth working step. The upper die continues to move downward, and the riveting punch 3 fixedly embedded in the cutting and bending punch 2 begins to contact and extend to the fifth working step. The PIN foot 4 on the outside of the material sheet bent in the first step causes it to deform downward by a certain angle. At this time, it is stopped at the outside of the material strip bent in the fifth step and cannot escape from the long strip riveting hole, thereby realizing the riveting positioning of the materials on the adjacent two sides of the square box. When the PIN foot 4 is riveted to a certain deformation amount, the upper mold and the lower mold are completely closed, realizing the square box forming and riveting positioning into an integrated structure. The utility model utilizes the height difference between the cutting part, the bending part and the riveting part on the cutting and bending punch 2 in one working step to realize the three tasks of material strip cutting and material sheet bending and PIN foot 4 riveting, avoiding the molding of multiple sets of molds and jigs, greatly reducing the mold cost, reducing labor, and improving product production efficiency.
[0038] The cutter structure 21 at the lower end of the cutting and bending punch 2 is connected with the bending punch structure 22 through the inclined surface 23. The cutter structure 21 and the bending punch structure 22 are connected through the inclined surface 23 to meet the height difference between the two, and the inclined surface 23 structure contacts the material to be bent during the bending process of the product material to be bent, and will not damage the material.
[0039] The lower edge of the cutting and bending punch 2 and the riveting punch 3 on one side of the bending forming block 1 close to the lower die is an arc surface, which can be tightly against the surface of the material to be bent of the product and the PIN foot 4 extending outside the bending edge of the product. The cutting and bending punch 2 and the riveting punch 3 contact the material to be bent and the PIN foot 4 through the arc surface, so that the material and the PIN foot 4 can be bent without damaging the material and the PIN foot 4. Rollers can also be set on the cutting and bending punch 2 and the riveting punch 3 to contact the material and the PIN foot 4 through the rollers to improve the smoothness of bending.
[0040] Two cutting blocks 9 are fixedly mounted on the lower die, and the two cutting edges are the upper edges of the opposite side walls of the two cutting blocks 9. A notch groove structure 24 is formed on the cutting edge of the cutting and bending punch 2 close to the lower die, which is directly opposite to the connection point between the material strip and the edge of the product to be bent. The cutting block 9 can be slidably inserted into the notch groove structure 24 of the cutting and bending punch 2, and the lower edge of the bottom surface of the notch groove structure 24 forms a cutting knife structure 21. After the connection point between the material to be bent and the material strip is cut, as the upper die continues to descend, the notch groove structure 24 on the cutting and bending punch 2 is sleeved on the outer side of the cutting block 9, and the cutting block 9 guides the cutting and bending punch 2, so that the cutting and bending punch 2 can vertically descend to bend the material to be bent and the PIN foot 4 of the product, and the strength of the cutting and bending punch 2 is enhanced.
[0041] The notch groove structure 24 on the cutting and bending punch 2 is a vertically penetrating structure, and its cross-section is a trapezoidal structure with an opening size larger than the bottom size. The cutting entry block 9 forms a trapezoidal structure matching the notch groove structure 24 on the cutting and bending punch 2 on the side close to the bending forming block 1. The trapezoidal structure of the cutting entry block 9 on the side close to the bending forming block 1 can be relatively slidably inserted into the notch groove structure 24 on the cutting and bending punch 2.
[0042] The upper die comprises an upper die seat, an upper clamping plate 101, a deep fixing plate 102, a stripping plate 103 and a stripping spring. The upper clamping plate 101 is fixedly mounted on the lower side of the upper die seat, the stripping plate 103 is fixedly mounted on the lower side of the deep fixing plate 102, the deep fixing plate 102 can be mounted on the lower side of the upper clamping plate 101 by sliding a set distance in the up and down directions, the stripping spring provides a downward elastic force to the deep fixing plate 102, and a stripping plate pressing block 105 is fixedly embedded on the stripping plate 103. The stripping pressing block 105 can press the product sheet located directly above the bending forming block 1. The upper ends of the cutting and bending punch 2 and the riveting punch 3 are fixedly mounted on the upper clamping plate 101. The deep fixing plate 102 and the stripping plate 103 are provided with guide avoidance holes for the cutting and bending punch 2 and the riveting punch 3 to slide and insert. The cutting and bending punch 2 and the riveting punch 3 can extend out of the lower side of the stripping plate 103 when the deep fixing plate 102 moves upward relative to the upper clamping plate 101. When the upper die descends to the point where the stripping plate 103 contacts the lower die, the stripping pressing block 105 on the stripping plate 103 begins to contact the middle of the product sheet to be bent and the position directly opposite to the bending forming block 1. As the upper die continues to descend, the stripping spring is compressed, and the middle of the product sheet to be bent is pressed and positioned. After the sheet to be bent is cut off from the material strip, it still maintains a stable positioning state, thereby ensuring the bending dimensional accuracy.
[0043] The lower die includes a lower die plate 104, a lower pad and a lower die base, the lower pad and the lower die plate 104 are fixedly installed on the upper side of the lower die base in sequence, the bending forming block 1 and the cutting blade are both arranged in the lower die plate 104, and the lower pad is also provided with a plurality of stripping pins that can slide a set distance in the vertical direction, the bending forming block 1 is provided with stripping holes 11 corresponding to the stripping pins one by one, and a plurality of stripping upper ends can be slidably inserted into the stripping holes 11, and the lower pad is also provided with a stripping spring, the stripping spring provides an upward elastic force to the stripping pin so that the stripping pin extends to a set height at the upper end of the bending forming block 1 in the mold opening state.
[0044] The lower die is also provided with a bent sheet positioning structure, which can stop and position the bent sheet where the PIN foot 4 is located. The bent sheet positioning structure can be a slot provided in the lower die. After the sheet with the PIN foot 4 bent in the fourth step is moved to the fifth step, it can be inserted into the slot of the lower die located in the fifth step for positioning. The upper end of the slot can form a trumpet-shaped guide port to achieve the positioning of the sheet with the PIN foot 4, thereby ensuring that when the sheet is bent in the fifth step, the long strip riveting hole on it is directly plugged with the PIN foot 4. The bent sheet positioning structure can also be an inclined slider that can slide horizontally in the mold. When the upper mold is closed, the shear insert on the upper mold cooperates with the inclined surface 23 of the inclined slider in the lower mold to drive the inclined slider to slide horizontally and clamp and position the sheet with the PIN foot 4.
Claims
1. A cutting, bending and riveting integrated forming die, comprising an upper die and a lower die, wherein the upper die can be lifted and lowered and is arranged directly above the lower die, characterized in that: The lower die is fixedly provided with a bending forming block (1) and a cutting blade, the bending forming block is arranged between the two cutting blades, and the lower side of the upper die is fixedly provided with a cutting and bending punch (2) and a riveting punch (3), the two cutting and bending punches are respectively located directly above the gap between the bending forming block of the lower die and the two cutting blades, one side of the lower end of the cutting and bending punch forms a cutting knife structure (21) that matches the cutting blade in the lower die and cuts off the connection point between the material strip and the edge to be bent of the product, and the other ... The bending forming block matches a bending punch structure (22) for bending the edge of the product to be bent downward, and the height of the cutting knife structure is lower than the height of the bending punch structure by at least one material thickness. An avoidance notch structure is formed on the lower end of the cutting and bending punch close to the side of the bending forming block. Two riveting punches are embedded in the two cutting and bending punches, and the lower ends of the riveting punches are directly connected to the avoidance notch structure. The riveting punches can squeeze the PIN foot (4) extending outward from the bending edge of the product downward to deform it and press it tightly against the outer side of the bending edge of the product.
2. The cutting, bending and riveting integrated forming die according to claim 1, characterized in that: The cutting knife structure at the lower end of the cutting and bending punch is connected to the bending punch structure via an inclined surface (23).
3. The cutting, bending and riveting integrated forming die according to claim 1 or 2, characterized in that: The lower edge of the cutting and bending punch and the riveting punch on one side of the bending forming block close to the lower die are arc surfaces, which can tightly contact the surface of the product sheet to be bent and the PIN foot extending outside the bending edge of the product.
4. The cutting, bending and riveting integrated forming die according to claim 1, characterized in that: Two cutting blocks (9) are fixedly mounted on the lower die, and the two cutting edges are the upper edges of the opposite side walls of the two cutting blocks. A notch groove structure (24) is formed on the side of the cutting edge of the cutting and bending punch close to the lower die, which is directly opposite to the connection point between the material strip and the edge to be bent of the product. The cutting block can be slidably inserted into the notch groove structure of the cutting and bending punch, and the lower edge of the bottom surface of the notch groove structure forms a cutting knife structure.
5. The cutting, bending and riveting integrated forming die according to claim 4, characterized in that: The notch groove structure on the cutting and bending punch is a vertical through structure, and its cross-section is a trapezoidal structure with an opening size larger than the bottom size. The cutting block is close to the bending forming block to form a trapezoidal structure that matches the notch groove structure on the cutting and bending punch. The trapezoidal structure of the cutting block close to the bending forming block can be relatively slidably inserted into the notch groove structure on the cutting and bending punch.
6. The cutting, bending and riveting integrated forming die according to claim 1, characterized in that: The upper die comprises an upper die base, an upper clamping plate (101), a deep fixing plate (102), a stripping plate (103) and a stripping spring, wherein the upper clamping plate is fixedly installed on the lower side of the upper die base, the stripping plate is fixedly installed on the lower side of the deep fixing plate, the deep fixing plate can be installed on the lower side of the upper clamping plate by sliding a set distance in the up and down directions, the stripping spring provides a downward elastic force to the deep fixing plate, a stripping pressing block (105) is fixedly embedded on the stripping plate, the stripping pressing block can press the product sheet located directly above the bending forming block, the upper ends of the cutting and bending punch and the riveting punch are fixedly installed on the upper clamping plate, the deep fixing plate and the stripping plate are formed with guide avoidance holes for the cutting and bending punch and the riveting punch to slide and insert, and the cutting and bending punch and the riveting punch can extend out of the lower side of the stripping plate when the deep fixing plate moves upward relative to the upper clamping plate.
7. The cutting, bending and riveting integrated forming die according to claim 1, characterized in that: The lower mold comprises a lower mold plate (104), a lower pad and a lower mold base, wherein the lower pad and the lower mold plate are fixedly mounted on the upper side of the lower mold base in sequence, the bending forming block and the cutting blade are both arranged in the lower mold plate, the lower pad is also provided with a plurality of stripping pins which can slide a set distance in a vertical direction, the bending forming block is provided with stripping holes (11) which correspond to the stripping pins one by one, a plurality of stripping upper ends can be slidably penetrated in the stripping holes, the lower pad is also provided with a stripping spring, the stripping spring provides an upward elastic force to the stripping pin so that the stripping pin extends to a set height at the upper end of the bending forming block in an open mold state.
8. The cutting, bending and riveting integrated forming die according to claim 1, characterized in that: A bent sheet positioning structure is also provided in the lower die, and the bent sheet positioning structure can stop and position the bent sheet where the PIN pin is located.