A stamping die for an automotive panel

Abstract

The application discloses a stamping die for automobile plate parts, which comprises a lower die, a guide column fixed on the upper surface edge of the lower die, an upper die connected with the guide column, a material plate arranged between the lower die and the upper die, a punching groove arranged in the middle of the upper surface of the lower die, a bending groove arranged side by side with the upper surface of the lower die and the punching groove and used for bending the material plate, and a guide assembly connected with one end surface of the lower die and used for limiting the side edge of the material plate.

Description

Technical Field

[0001] This invention specifically relates to a stamping die for automotive sheet metal parts. Background Technology

[0002] In the production of automotive parts, stamping is widely used in the forming and processing of various sheet metal parts. It usually requires multiple processes such as punching, bending, and cutting to be completed in sequence. In order to improve production efficiency, progressive dies or continuous dies are often used in the existing technology, and automatic feeding devices such as servo feeders are used to transport the sheet metal forward station by station to achieve continuous automatic stamping.

[0003] In practical applications, for situations where the material sheet itself needs to be positioned using existing cuts or holes, traditional mold structures often cannot quickly and accurately position the end of the material sheet automatically. Usually, the material sheet needs to be manually placed into the mold and aligned with the corresponding station. This is not only labor-intensive and inefficient, but also poses certain safety hazards. In addition, the material sheet lacks reliable lateral guidance and limiting during continuous conveying, which poses a risk of skew and deviation, resulting in inaccurate stamping position. Therefore, we propose a stamping mold for automotive sheet metal parts. Summary of the Invention

[0004] The purpose of this invention is to provide a stamping die for automotive sheet metal to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a stamping die for automotive sheet metal, comprising:

[0006] The lower mold has a guide post fixed to the edge of its upper surface, and the upper mold is connected to the guide post.

[0007] A material plate is disposed between the lower mold and the upper mold;

[0008] A punching groove is formed in the middle of the upper surface of the lower die, and a bending groove for bending the material plate is arranged side by side on the upper surface of the lower die and the punching groove.

[0009] A guide assembly is connected to one end face of the lower mold to limit the side edge of the material plate;

[0010] A positioning component is disposed inside the lower mold and penetrates the upper surface of the lower mold to correspond to the cut on the material plate, thereby positioning one end of the material plate after punching.

[0011] Preferably, the lower surface of the upper mold includes a bending block and a cutting block, the bending block and the cutting block are fixed side by side on the lower surface of the upper mold, the cutting block corresponds to the cutting groove opened on the lower mold, there is a punching block corresponding to the punching groove between the cutting block and the bending block, and there is an ejection spring on the inner side of the bending groove to eject the bent material.

[0012] Preferably, the positioning assembly includes a rotating block, a stop rod, a shaft, a rotating groove, and a push rod. The rotating block is rotatably mounted on the inner side of the rotating groove on the lower mold via the shaft on the side wall. The lower surface of the shaft has an elastic structure that provides elastic support for it. The outer wall of the rotating block extends outward to form a positioning stop, and the top of the inner side of the rotating groove has a stop rod that abuts against the positioning stop. The push rod is fixed to the lower surface of the upper mold to correspond to the positioning stop.

[0013] Preferably, the elastic structure includes a support block and a support spring, the support block is slidably installed inside the rotating groove, and the lower surface of the support block has a support spring for supporting it.

[0014] Preferably, the positioning block is provided in four places along the circumference of the rotating block, and the positioning block is provided with a first inclined surface facing away from the stop rod, and the lower surface of the push rod is provided with a second inclined surface opposite to the first inclined surface.

[0015] Preferably, there are two push rods, the rotating groove is larger than the outer diameter of the rotating block, and the inner wall of the rotating groove does not contact the positioning block.

[0016] Preferably, the guide assembly includes a rotating shaft, a guide rod, and a retaining strip. The rotating shaft is rotatably mounted on one end face of the lower mold via a support block. The guide rod is fixed to both ends of the upper surface of the rotating shaft to contact the side of the material plate. The retaining strip is fixed to one end face of the lower mold to engage with the guide rod.

[0017] Preferably, a sleeve is rotatably mounted on the outer surface of the guide rod.

[0018] Preferably, the positioning components are symmetrically arranged in two locations along the center of the short side of the lower mold.

[0019] Preferably, the other end face of the lower mold is provided with an inclined feeding groove.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] This invention effectively solves the problems of easy skewness in material feeding, inaccurate positioning, need for manual placement, and dispersed processes in existing technologies by integrating a guiding component, a positioning component, and a composite stamping structure. In this invention, the positioning component and the existing notch of the material plate cooperate to achieve automatic and repeated positioning of the material plate pitch in continuous stamping cycles, eliminating the need for manual alignment, greatly reducing labor intensity, and ensuring the positional accuracy of mold closing and stamping. The guiding component can reliably limit the side of the material plate to avoid large skewness during feeding, ensuring that the material plate always moves smoothly along the stamping feed direction, significantly improving feeding accuracy, and facilitating the formation of automated continuous operations from feeding guidance and pitch positioning to stamping and unloading. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the positioning component structure of the present invention;

[0024] Figure 3 This is a schematic diagram of the bending groove structure of the present invention;

[0025] Figure 4 For the present invention Figure 2 A schematic diagram of the cross-sectional structure at point A;

[0026] Figure 5 This is a schematic diagram of the elastic structure of the present invention;

[0027] Figure 6 This is a schematic diagram of the push rod structure of the present invention;

[0028] Figure 7 This is a schematic diagram of the cooperation structure between the push rod and the positioning block of the present invention;

[0029] Figure 8 This is a schematic diagram of the guiding component structure of the present invention;

[0030] Figure 9 This is a schematic diagram illustrating the finished product effect of the present invention.

[0031] In the diagram: 1. Lower mold; 2. Guide assembly; 21. Rotating shaft; 22. Guide rod; 23. Sleeve; 24. Clamping strip; 3. Material plate; 31. Cutting notch; 4. Guide post; 5. Upper mold; 6. Cutting groove; 7. Punching groove; 8. Bending groove; 81. Ejection spring; 9. Positioning assembly; 91. Rotating block; 911. Positioning stop block; 92. Stop bar; 93. Shaft; 94. Elastic structure; 941. Support block; 942. Support spring; 95. Push rod; 10. Bending block; 11. Cutting block. Detailed Implementation

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

[0033] Please see Figures 1-9 This invention provides a technical solution: a stamping die for automotive sheet metal, comprising:

[0034] Lower mold 1, with guide post 4 fixed to the edge of the upper surface of lower mold 1, and upper mold 5 connected to guide post 4;

[0035] Material plate 3 is positioned between lower mold 1 and upper mold 5;

[0036] A punching groove 7 is provided in the middle of the upper surface of the lower die 1, and a bending groove 8 for bending the material plate 3 is provided on the upper surface of the lower die 1 and the punching groove 7.

[0037] Guide component 2 is connected to one end face of lower mold 1 to limit the side of material plate 3;

[0038] Positioning component 9 is disposed inside the lower mold 1 and penetrates the upper surface of the lower mold 1 to correspond to the cut 31 on the material plate 3, and is used to position one end of the material plate 3 after punching.

[0039] This allows the mold to effectively limit the side of the material plate 3 and use the cut 31 on the material plate 3 to position one end of it, avoiding the material plate 3 from being tilted and manually placed. This enables it to work with the feeder to achieve automatic feeding and precise positioning, significantly improving stamping accuracy and production efficiency, and reducing labor intensity.

[0040] Preferably, the lower surface of the upper mold 5 includes a bending block 10 and a cutting block 11. The bending block 10 and the cutting block 11 are fixed side by side on the lower surface of the upper mold 5. The cutting block 11 corresponds to the cutting groove 6 opened on the lower mold 1. There is a punching block between the cutting block 11 and the bending block 10 that corresponds to the punching groove 7. The inner side of the bending groove 8 has an ejection spring 81 that ejects the bent material.

[0041] It facilitates the simultaneous completion of punching, bending and cutting processes in one mold closing, and the ejector spring 81 in the bending groove 8 automatically ejects the bent material, making the process highly concentrated, effectively reducing process flow, and improving production cycle and automation level.

[0042] Preferably, the positioning component 9 includes a rotating block 91, a stop rod 92, a shaft 93, a rotating groove, and a push rod 95. The rotating block 91 is rotatably mounted on the inner side of the rotating groove opened on the lower mold 1 via the shaft 93 on the side wall. The lower surface of the shaft 93 has an elastic structure 94 that provides elastic support for it. The outer wall of the rotating block 91 extends outward to form a positioning stop 911, and the top of the inner side of the rotating groove has a stop rod 92 that abuts against the positioning stop 911. The push rod 95 is fixed to the lower surface of the upper mold 5 to correspond to the positioning stop 911.

[0043] The upper mold 5 drives the push rod 95 to move down, which in turn drives the rotating block 91 to move down and rotate, so that the positioning block 911 is misaligned with the stop rod 92. After moving up and resetting, the other positioning block 911 can be inserted into the cut 31 of the material plate 3 to achieve positioning. This structure does not require additional power, is reliable in operation, and is accurate in positioning, realizing automatic repeatable positioning of the material plate pitch in the stamping cycle.

[0044] Preferably, the elastic structure 94 includes a support block 941 and a support spring 942. The support block 941 is slidably installed inside the rotating groove, and the lower surface of the support block 941 has a support spring 942 for supporting it.

[0045] Provides stable and smooth elastic support and reset force for the rotating block 91, ensuring that the positioning stop 911 can reliably engage with the material plate 3 cut 31 after being raised.

[0046] Preferably, the positioning block 911 is provided with four locations around the rotating block 91, and the positioning block 911 is provided with a first inclined surface facing away from the stop rod 92, and the lower surface of the push rod 95 is provided with a second inclined surface opposite to the first inclined surface;

[0047] This allows the push rod 95 to rotate the rotating block 91 by an angle each time it is pressed down, thus achieving step-by-step switching. This ensures that the positioning stop 911 and the cut 31 of the material plate 3 cooperate during the stamping cycle, resulting in high positioning repeatability.

[0048] Preferably, there are two push rods 95, the rotation groove is larger than the outer diameter of the rotating block 91, and the inner wall of the rotation groove does not contact the positioning block 911;

[0049] The inner diameter of the rotating groove is larger than the outer diameter of the rotating block 91 and does not contact the positioning stop 911, so as to avoid frictional interference during rotation and ensure that the positioning component 9 moves flexibly and smoothly.

[0050] Preferably, the guide assembly 2 includes a rotating shaft 21, a guide rod 22, and a retaining strip 24. The rotating shaft 21 is rotatably mounted on one end face of the lower mold 1 via a support block. The guide rod 22 is fixed to both ends of the upper surface of the rotating shaft 21 to contact the side of the material plate 3. The retaining strip 24 is fixed to one end face of the lower mold 1 to engage with the guide rod 22.

[0051] It can easily limit and release the side of the material plate 3, effectively preventing the material plate 3 from tilting significantly during conveying, ensuring that the material plate 3 is always conveyed smoothly along the stamping feed direction, and improving the feeding accuracy.

[0052] Preferably, a sleeve 23 is rotatably mounted on the outer surface of the guide rod 22;

[0053] This changes the sliding friction between the material plate 3 and the guide rod 22 into rolling friction, reducing the feeding resistance and preventing scratches on the surface of the material plate 3.

[0054] Preferably, the positioning components 9 are symmetrically arranged in two locations along the center of the short side of the lower mold 1;

[0055] It can simultaneously position both sides of the material plate 3, so that the material plate 3 is balanced by the force on the left and right sides, preventing unilateral deviation, and further improving the stability of positioning and the stamping accuracy.

[0056] Preferably, an inclined feeding groove is provided on the other end face of the lower mold 1;

[0057] The stamped finished product can slide automatically out along the feeding chute under the action of gravity, realizing automatic feeding that matches the automatic feeding and reducing manual material handling.

[0058] The working principle and usage process of this invention are as follows: During use, the material plate 3 is conveyed forward by the feeder. The guide assembly 2 limits the side of the material plate 3 to achieve guidance. When the upper mold 5 is driven to move downward by the stamping machine, the bending block 10 and bending groove 8, the cutting block 11 and cutting groove 6, and the punching groove 7 and punching block cooperate with each other to achieve bending, cutting and punching of the material plate 3 in a single mold closing. At the same time, the push rod 95 abuts against the positioning stop 911 to push the rotating block 91 downward until the top of the positioning stop 911 is misaligned with the stop rod 92. At this time, the rotating block 91 is driven to rotate under the cooperation of the first inclined surface and the second inclined surface. Then, the upper mold 5 moves upward under the drive of the stamping machine. The push rod 95 does not contact the positioning block 911. The support spring 942 supports the rotating block 91 to move upward. The feeder continues to push the material plate 3 forward. The lower surface of the material plate 3 contacts the rotating block 91 to push the rotating block 91 to continue rotating. At the same time, the stamped finished product is pushed out from the lower mold 1 from the end of the material plate 3 for unloading. After another positioning block 911 on the rotating block 91 is inserted into the inside of the cut 31, it can restrict the movement of the material plate 3, thereby positioning the end of the material plate 3. At this time, the upper mold 5 repeats the downward movement to stamp the material plate 3 again.

[0059] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A stamping die for automotive sheet metal, characterized in that, include: The lower mold (1) has a guide post (4) fixed on the edge of its upper surface, and the upper mold (5) is connected to the guide post (4). Material plate (3) is disposed between the lower mold (1) and the upper mold (5); A punching groove (7) is provided in the middle of the upper surface of the lower mold (1), and a bending groove (8) for bending the material plate (3) is provided on the upper surface of the lower mold (1) and the punching groove (7). The guide assembly (2) is connected to one end face of the lower mold (1) to limit the side of the material plate (3); The positioning component (9) is located inside the lower mold (1) and extends through the upper surface of the lower mold (1) to correspond to the cut (31) on the material plate (3) and to position one end of the material plate (3) after it is punched.

2. The stamping die for automotive sheet metal according to claim 1, characterized in that: The lower surface of the upper mold (5) includes a bending block (10) and a cutting block (11). The bending block (10) and the cutting block (11) are fixed side by side on the lower surface of the upper mold (5). The cutting block (11) corresponds to the cutting groove (6) opened on the lower mold (1). There is a punching block between the cutting block (11) and the bending block (10) that corresponds to the punching groove (7). The inner side of the bending groove (8) has an ejection spring (81) that ejects the bent material.

3. The stamping die for automotive sheet metal according to claim 1, characterized in that: The positioning component (9) includes a rotating block (91), a stop rod (92), a shaft rod (93), a rotating groove, and a push rod (95). The rotating block (91) is rotatably mounted on the inner side of the rotating groove opened on the lower mold (1) via the shaft rod (93) on the side wall. The lower surface of the shaft rod (93) has an elastic structure (94) that provides elastic support for it. The outer wall of the rotating block (91) extends outward to form a positioning stop (911), and the top of the inner side of the rotating groove has a stop rod (92) that abuts against the positioning stop (911). The push rod (95) is fixed to the lower surface of the upper mold (5) to correspond to the positioning stop (911).

4. The stamping die for automotive sheet metal according to claim 3, characterized in that: The elastic structure (94) includes a support block (941) and a support spring (942). The support block (941) is slidably installed inside the rotating groove, and the lower surface of the support block (941) has a support spring (942) supporting it.

5. The stamping die for automotive sheet metal according to claim 3, characterized in that: The positioning block (911) has four locations arranged around the circumference of the rotating block (91). The positioning block (911) has a first inclined surface facing away from the stop rod (92), and the lower surface of the push rod (95) has a second inclined surface opposite to the first inclined surface.

6. The stamping die for automotive sheet metal according to claim 4, characterized in that: Two push rods (95) are provided. The rotating groove is larger than the outer diameter of the rotating block (91), and the inner wall of the rotating groove does not contact the positioning block (911).

7. The stamping die for automotive sheet metal according to claim 1, characterized in that: The guide assembly (2) includes a rotating shaft (21), a guide rod (22), and a retaining strip (24). The rotating shaft (21) is rotatably mounted on one end face of the lower mold (1) via a support block. The guide rod (22) is fixed at both ends of the upper surface of the rotating shaft (21) to contact the side of the material plate (3). The retaining strip (24) is fixed on one end face of the lower mold (1) to engage with the guide rod (22).

8. The stamping die for automotive sheet metal according to claim 7, characterized in that: A sleeve (23) is rotatably mounted on the outer surface of the guide rod (22).

9. The stamping die for automotive sheet metal according to claim 1, characterized in that: The positioning component (9) is symmetrically arranged in two places along the short side center of the lower mold (1).

10. A stamping die for automotive sheet metal according to claim 1, characterized in that: The lower mold (1) has an inclined feeding groove on its other end face.

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