Stamping forming process and stamping die for automobile chassis

Abstract

The invention discloses an automobile chassis stamping forming process and a stamping die, and relates to the field of automobile chassis stamping dies, the automobile chassis stamping forming process comprises a lower die and an upper die, the upper die is located above the lower die, a guide column is fixedly connected between the upper die and the lower die, and demolding assemblies are fixedly installed on the two sides of the lower die. The demolding assembly comprises a positioning rod and a movable plate. The demolding assemblies used for rapid demolding are arranged on the two sides of the lower mold, in the upward moving process of the upper mold after stamping is completed, the demolding assemblies can be driven, push blocks in the demolding assemblies can move in the direction of a movable plate, in the moving process, the movable plate can synchronously rotate, and therefore the demolding effect is improved. When the overall length is increased, the purpose of tilting the base plate from the shaping template is achieved by matching with the change of the angle, and the change of the angle mainly applies the lever principle, so that the effect of increasing the demolding speed can be achieved.

Description

Technical Field

[0001] The invention relates to the technical field of automobile chassis stamping dies, in particular to an automobile chassis stamping forming process and a stamping die. Background Art

[0002] A stamping die is a tool used for metal processing, which is mainly used to process metal materials into parts of required shapes and sizes through stamping processes. Stamping dies are widely used in the automotive, home appliance, electronics and other industries. Among them, automobile chassis molds are tools and equipment used to produce automobile chassis parts.

[0003] For example, "A stamping die for automobile chassis" with publication number CN118616560A includes a base, a top seat is provided on the top of the base, a plurality of long rods are provided between the base and the top seat, an upper die seat is provided below the top seat, buffer components are provided on both sides of the upper die seat, and the buffer components are used to alleviate impact force and reduce collision intensity; there are two groups of buffer components, each group of buffer components includes a connecting plate, the internal sliding connection of the connecting plate is connected to two connecting rods, and the outer walls of the two connecting rods are sleeved with springs.

[0004] However, in the prior art, during the stamping process of the automobile chassis, since the chassis has a large mass and a very large pressure needs to be applied to the chassis during the stamping process, the chassis is prone to get stuck in the mold during the actual stamping process. Subsequently, other devices need to be used to demold the chassis. This process requires other preparatory work, which is time-consuming and labor-intensive, and will delay the normal stamping of other chassis, thereby affecting the entire production schedule. Summary of the invention

[0005] The purpose of the present invention is to provide a stamping forming process and a stamping die for an automobile chassis, so as to solve the problem raised in the above-mentioned background technology that the chassis is easily stuck in the die during the actual stamping process, and other devices are needed to demold the chassis later. This process requires other preparatory work, which is time-consuming and labor-intensive, and will delay the normal stamping of other chassis, thereby affecting the entire production progress.

[0006] To achieve the above object, the present invention provides the following technical solutions: a stamping process and stamping die for an automobile chassis, comprising a lower die and an upper die, wherein the upper die is located above the lower die, a guide column is fixedly connected between the upper die and the lower die, and demoulding components are fixedly installed on both sides of the lower die; The demoulding assembly includes a positioning rod and a movable plate, a push block is slidably installed inside the movable plate, a docking rod is fixedly installed at one end of the movable plate, the docking rod is rotatably connected to the positioning rod, a carrying plate is detachably installed on the upper surface of the lower mold, a shaping template is fixedly installed on the upper surface of the carrying plate, and the lower surface of the movable plate overlaps the edge of the shaping template.

[0007] Preferably, a partition plate is fixedly installed on the lower surface of the upper mold, a heat sink is fixedly installed inside the partition plate, the top of the heat sink is fixedly connected to the inside of the upper mold, and blocking rods are fixedly installed on the lower surface of the partition plate and the upper surface of the supporting plate.

[0008] Preferably, a stamping template is fixedly mounted on the lower surface of the heat sink, and the stamping template is located above the shaping template.

[0009] Preferably, a positioning convex strip is fixedly installed at the junction of the lower mold and the supporting plate, the guide column is located at the corner of the molding template, a limiting rod is fixedly installed on the upper surface of the positioning convex strip, and the limiting rod is located at the edge of the molding template, and protective blocks are fixedly installed at the corners of the molding template and the corners of the stamping template.

[0010] Preferably, a limit plate is fixedly mounted on the outer wall of the guide column, one of the limit plates is overlapped on the protection block of the stamping template, and the other limit plate is overlapped on the protection block of the shaping template.

[0011] Preferably, a receiving cavity is provided inside the movable plate, the push block is located inside the receiving cavity, and connecting blocks are fixedly installed on both sides of the push block.

[0012] Preferably, one end of the connecting block is fixedly connected to a guide rod, one end of the guide rod is inserted into the interior of the movable plate, and a positioning hole is provided at the junction of the movable plate and the guide rod.

[0013] Preferably, a strip hole is provided at the junction of the movable plate and the connecting block, the positioning hole is located at one end of the strip hole, the strip hole is located at the edge of the movable plate, a tension spring is fixedly installed on one side of the connecting block, and one end of the tension spring is fixedly connected to the movable plate.

[0014] Preferably, extension rods are fixedly installed on both sides of the upper mold, the extension rods are inserted into the inside of the movable plate, and protrusions are fixedly installed on both sides of the extension rods. The protrusions are slidably connected to the inside of the strip holes, and the protrusions are rotationally connected to the connecting blocks.

[0015] A stamping process for automobile chassis, comprising the following steps: S1. Put the automobile chassis to be processed into the shaping template, ensure that one end or both ends of the chassis can extend out of the shaping template and remain above the movable plate, the shaping template is provided with a depression of the shape to be processed, and the lower surface of the stamping template is provided with a shape that matches the depression of the shaping template. During processing, the upper mold moves along the direction of the guide column under the push of the hydraulic assembly until the stamping template contacts the chassis and presses it out into a shape that matches the depression of the shaping template; S2. The blocking rod determines the maximum movement range of the stamping template. After the blocking rod on the partition plate contacts the blocking rod on the lower surface of the partition plate, the upper mold stops moving. During the downward movement of the upper mold, the protrusions on both sides of the extension rod press the movable plate to a horizontal state. At this time, the movable plate overlaps the edge of the finalizing template. S3. After the stamping is completed, when the upper mold moves upward, the extension rod will drive the movable plate to rotate with the docking rod as the center through the protrusion, and the protrusion will also push the push block out of the movable plate, and use the push block to lift the chassis from the molding template to complete automatic demoulding.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, demoulding components for rapid demoulding are arranged on both sides of the lower mold. When the upper mold moves upward after stamping, the demoulding components will be driven. The push block in the demoulding component can move along the direction of the movable plate, and in the process of movement, the movable plate itself will also rotate synchronously. While the overall length is lengthened, the angle changes to achieve the purpose of lifting the chassis from the molding template. The change in angle mainly uses the principle of leverage, which can play a role in improving the demoulding speed. The push block is built into the movable plate, which can ensure its own structural stability and avoid the problems of push block misalignment and movement direction deviation.

[0017] 2. In the present invention, a wooden board for heat dissipation is arranged between the upper mold and the stamping template. During the stamping process, the friction between the stamping template and the metal chassis will generate a lot of heat, which can be quickly discharged by the fan in the heat dissipation plate through stirring the airflow, and the lower mold is also provided with positioning convex strips and limit rods for determining the position, which can ensure the stability of the shaping template during the processing.

[0018] 3. In the present invention, two corners of the push block are provided with connecting blocks built into the strip holes of the movable plate. During the upward movement of the upper mold, the extension rods on both sides thereof will push the movable plate through the protrusions, forcing the movable plate to rotate while also pushing the push plate out of the accommodating cavity. During this process, the connecting block will compress the tension spring. During the subsequent stamping process, the rebound of the tension spring can bounce the connecting block back to the end of the strip hole, thereby ensuring that the movable block will not affect the normal movement of the stamping template. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of a stamping die for an automobile chassis of the present invention; Figure 2 It is a front view of a stamping die for an automobile chassis of the present invention; Figure 3 This is a schematic diagram of the bottom structure of an upper die of an automobile chassis stamping die of the present invention; Figure 4 A top view of a lower die of a stamping die for an automobile chassis of the present invention; Figure 5 This is a schematic diagram of the connection and structure of a lower die and a demoulding assembly of a stamping die for an automobile chassis of the present invention; Figure 6 This is a schematic diagram of the demoulding component structure of a stamping die for an automobile chassis of the present invention; Figure 7 For the present invention Figure 1 Schematic diagram of the enlarged structure of part A.

[0020] In the figure: 1. lower mold; 2. upper mold; 3. extension rod; 4. bearing plate; 5. demoulding assembly; 6. blocking rod; 7. guide column; 8. partition plate; 9. stamping template; 10. convex block; 11. limit plate; 12. protection block; 13. limit rod; 14. positioning convex strip; 15. shaping template; 16. heat dissipation plate; 51. positioning rod; 52. movable plate; 53. push block; 54. docking rod; 55. connecting block; 56. strip hole; 57. positioning hole; 58. guide rod; 59. tension spring; 510. accommodating cavity. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Example 1: Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown: a stamping process and stamping die for automobile chassis, comprising a lower die 1 and an upper die 2, wherein the upper die 2 is located above the lower die 1, a guide column 7 is fixedly connected between the upper die 2 and the lower die 1, and demoulding components 5 are fixedly installed on both sides of the lower die 1; The demoulding assembly 5 includes a positioning rod 51 and a movable plate 52, a push block 53 is slidably installed inside the movable plate 52, a docking rod 54 is fixedly installed at one end of the movable plate 52, and the docking rod 54 is rotatably connected to the positioning rod 51, a carrying plate 4 is detachably installed on the upper surface of the lower mold 1, a shaping template 15 is fixedly installed on the upper surface of the carrying plate 4, the lower surface of the movable plate 52 overlaps the edge of the shaping template 15, a partition plate 8 is fixedly installed on the lower surface of the upper mold 2, a heat sink 16 is fixedly installed inside the partition plate 8, and the top of the heat sink 16 is fixedly connected to the inside of the upper mold 2, a blocking rod 6 is fixedly installed on the lower surface of the partition plate 8 and the upper surface of the carrying plate 4, a stamping template 9 is fixedly installed on the lower surface of the heat sink 16, and the stamping template 9 is located above the shaping template 15.

[0023] In this embodiment, the upper mold 2 and the lower mold 1 are connected by a guide column 7, a partition plate 8 is provided below the upper mold 2 to determine the position of the guide column 7, and a bearing plate 4 is provided on the lower mold 1 to determine the position of the guide column 7, so as to ensure the overall structural stability. When in use, the chassis is placed on the shaping template 15, and a certain space is left between the movable plate 52 and the shaping template 15. At this time, the upper mold 2 needs to be kept at a medium height to ensure that the movable plate 52 is below the chassis, so as not to affect the normal stamping of the chassis; After the chassis is deployed, the upper mold 2 is pushed downward along the direction of the guide column 7 by the hydraulic assembly, and the chassis is punched out into a shape that matches the depression on the finalizing template 15 by the punching template 9. In this process, the movable plate 52 will overlap the finalizing template 15. After the punching is completed, the upper mold 2 moves upward. During its movement, the push block 53 will be pushed out from the movable plate 52. When the upper mold 2 moves upward to a height that exceeds the height of the initial deployment of the chassis, the push block 53 can contact the chassis. As the upper mold 2 continues to move upward, the push block 53 will eventually push the chassis away from the finalizing template 15. During the stamping process, the heat generated by the friction between the stamping template 9 and the metal chassis will be discharged from the top of the upper mold 2 by the heat sink 16. The position of the heat sink 16 is determined by the partition plate 8 to ensure the structural stability of the heat sink 16 and the stamping template 9. The position of the shaping template 15 is determined by the supporting plate 4. The upper surface of the supporting plate 4 and the lower surface of the partition plate 8 are both provided with blocking rods 6, which can determine the maximum downward movement height of the upper mold 2.

[0024] Embodiment 2: According to Figure 1 , Figure 4 and Figure 5As shown, a positioning convex strip 14 is fixedly installed at the junction of the lower mold 1 and the supporting plate 4, the guide column 7 is located at the corner of the shaping template 15, and a limiting rod 13 is fixedly installed on the upper surface of the positioning convex strip 14, and the limiting rod 13 is located at the edge of the shaping template 15. Protective blocks 12 are fixedly installed at the corners of the shaping template 15 and the corners of the stamping template 9. Limiting plates 11 are fixedly installed on the outer wall of the guide column 7, one of the limiting plates 11 is overlapped on the protective block 12 of the stamping template 9, and the other limiting plate 11 is overlapped on the protective block 12 of the shaping template 15.

[0025] In this embodiment, the positioning ridge 14 is used to determine the position of the supporting plate 4, and together with the use of the limiting rod 13, the positions of the supporting plate 4 and the forming template 15 can be determined simultaneously. The protection block 12 is used to protect the guide column 7 to maintain the stability of the guide column 7. The limiting plate 11 is used to separate the two protection blocks 12 to ensure the safety of the entire device.

[0026] Embodiment 3: According to Figure 2 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, a receiving cavity 510 is provided inside the movable plate 52, and a push block 53 is located inside the receiving cavity 510. Connecting blocks 55 are fixedly installed on both sides of the push block 53. One end of the connecting block 55 is fixedly connected to a guide rod 58, and one end of the guide rod 58 is inserted into the inside of the movable plate 52. A positioning hole 57 is provided at the intersection of the movable plate 52 and the guide rod 58. A strip hole 56 is provided at the intersection of the movable plate 52 and the connecting block 55. The positioning hole 57 is located at one end of the strip hole 56, and the strip hole 56 is located at the edge of the movable plate 52. A tension spring 59 is fixedly installed on one side of the connecting block 55, and one end of the tension spring 59 is fixedly connected to the movable plate 52. Extension rods 3 are fixedly installed on both sides of the upper mold 2, and the extension rods 3 are inserted into the inside of the movable plate 52. Bumps 10 are fixedly installed on both sides of the extension rod 3. The bumps 10 are slidably connected to the inside of the strip hole 56, and the bumps 10 are rotatably connected to the connecting block 55.

[0027] In this embodiment, the accommodating cavity 510 is used to accommodate the push block 53. When the movable plate 52 is in a horizontal state, the push block 53 is completely built into the accommodating cavity 510. During the upward movement of the upper mold 2, the extension rod 3 drives the movable plate 52 through the protrusion 10, so that the movable plate 52 rotates with the docking rod 54 as the center. The docking rod 54 is connected to the positioning rod 51. The use of the protrusion 10 can ensure the stability of the movable plate 52. Bar holes 56 are provided on both sides of the movable plate 52 to accommodate the protrusions 10 and the connecting blocks 55, thereby ensuring the stability of the push block 53. When the movable plate 52 rotates, the protrusions 10 also move upward. During this process, the protrusions 10 will push the connecting blocks 55, thereby achieving the purpose of pushing the push block 53 out of the movable plate 52. During the movement of the connecting block 55, the guide rod 58 will be inserted into the positioning hole 57 of the movable plate 52, and will also simultaneously compress the tension spring 59. When the movable plate 52 is subsequently restored to a horizontal state, the rebound of the tension spring 59 can rebound the push block 53 to the end of the strip hole 56 and contact the protrusion 10.

[0028] The use method and working principle of the device are as follows: the automobile chassis to be processed is placed in the shaping template 15. At this time, the upper mold 2 needs to be kept at a medium height to ensure that the movable plate 52 is below the chassis, and one or both ends of the chassis can extend out of the shaping template 15 and remain above the movable plate 52. The shaping template 15 is provided with a depression of the required processing shape, and the lower surface of the stamping template 9 is provided with a shape that matches the depression of the shaping template 15. During processing, the upper mold 2 moves along the direction of the guide column 7 under the push of the hydraulic assembly until the stamping template 9 contacts the chassis and presses it out into a shape that matches the depression of the shaping template 15. The blocking rod 6 determines the maximum movement range of the punching template 9. After the blocking rod 6 on the partition plate 8 contacts the blocking rod 6 on the lower surface of the partition plate 8, the upper mold 2 stops moving. During the downward movement of the upper mold 2, the protrusions 10 on both sides of the extension rod 3 press the movable plate 52 to a horizontal state. At this time, the movable plate 52 overlaps the edge of the shaping template 15. After the stamping is completed, when the upper mold 2 moves upward, the extension rod 3 will drive the movable plate 52 to rotate with the docking rod 54 as the center through the protrusion 10, and the protrusion 10 will also push the connecting block 55 to achieve the purpose of pushing the push block 53 out of the movable plate 52, and use the push block 53 to lift the chassis from the molding template 15 to complete the automatic demoulding. During the movement of the connecting block 55, the guide rod 58 will be inserted into the positioning hole 57 of the movable plate 52, and the tension spring 59 will also be compressed synchronously. When the movable plate 52 is subsequently restored to a horizontal state, the rebound of the tension spring 59 can rebound the push block 53 to the end of the strip hole 56 and contact the protrusion 10.

[0029] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A stamping die for automobile chassis, characterized in that: The invention comprises a lower mold (1) and an upper mold (2), wherein the upper mold (2) is located above the lower mold (1), a guide column (7) is fixedly connected between the upper mold (2) and the lower mold (1), and demoulding components (5) are fixedly installed on both sides of the lower mold (1); The demoulding assembly (5) comprises a positioning rod (51) and a movable plate (52), a push block (53) is slidably mounted inside the movable plate (52), a docking rod (54) is fixedly mounted on one end of the movable plate (52), and the docking rod (54) is rotatably connected to the positioning rod (51), a bearing plate (4) is detachably mounted on the upper surface of the lower mold (1), a shaping template (15) is fixedly mounted on the upper surface of the bearing plate (4), and the lower surface of the movable plate (52) overlaps the edge of the shaping template (15).

2. The automobile chassis stamping die according to claim 1, characterized in that: A partition plate (8) is fixedly mounted on the lower surface of the upper mold (2), a heat sink (16) is fixedly mounted inside the partition plate (8), the top of the heat sink (16) is fixedly connected to the inside of the upper mold (2), and blocking rods (6) are fixedly mounted on the lower surface of the partition plate (8) and the upper surface of the carrier plate (4).

3. The automobile chassis stamping die according to claim 2, characterized in that: A stamping template (9) is fixedly mounted on the lower surface of the heat dissipation plate (16), and the stamping template (9) is located above the shaping template (15).

4. The automobile chassis stamping die according to claim 3, characterized in that: A positioning convex strip (14) is fixedly installed at the intersection of the lower mold (1) and the bearing plate (4), the guide column (7) is located at the corner of the shaping template (15), a limiting rod (13) is fixedly installed on the upper surface of the positioning convex strip (14), and the limiting rod (13) is located at the edge of the shaping template (15), and protective blocks (12) are fixedly installed at the corners of the shaping template (15) and the corners of the stamping template (9).

5. The automobile chassis stamping die according to claim 4, characterized in that: A limit plate (11) is fixedly mounted on the outer wall of the guide column (7), wherein one of the limit plates (11) overlaps the protective block (12) of the punching template (9), and the other limit plate (11) overlaps the protective block (12) of the shaping template (15).

6. The automobile chassis stamping die according to claim 5, characterized in that: The movable plate (52) has an accommodating cavity (510) formed inside, the push block (53) is located inside the accommodating cavity (510), and connecting blocks (55) are fixedly mounted on both sides of the push block (53).

7. The automobile chassis stamping die according to claim 6, characterized in that: One end of the connecting block (55) is fixedly connected to a guide rod (58), one end of the guide rod (58) is inserted into the interior of the movable plate (52), and a positioning hole (57) is provided at the junction of the movable plate (52) and the guide rod (58).

8. The automobile chassis stamping die according to claim 7, characterized in that: A strip hole (56) is provided at the junction of the movable plate (52) and the connecting block (55); the positioning hole (57) is located at one end of the strip hole (56); the strip hole (56) is located at the edge of the movable plate (52); a tension spring (59) is fixedly mounted on one side of the connecting block (55); one end of the tension spring (59) is fixedly connected to the movable plate (52).

9. The automobile chassis stamping die according to claim 8, characterized in that: Extension rods (3) are fixedly mounted on both sides of the upper mold (2), and the extension rods (3) are inserted into the interior of the movable plate (52). Bumps (10) are fixedly mounted on both sides of the extension rods (3), and the bumps (10) are slidably connected to the interior of the strip-shaped holes (56). The bumps (10) are rotationally connected to the connecting blocks (55).

10. A stamping process for automobile chassis, using an automobile chassis stamping die as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Place the automobile chassis to be processed into the shaping template (15), ensure that one end or both ends of the chassis can extend out of the shaping template (15) and remain above the movable plate (52), the shaping template (15) is provided with a depression of a shape to be processed, and the lower surface of the punching template (9) is provided with a shape that matches the depression of the shaping template (15). During processing, the upper mold (2) is moved along the direction of the guide column (7) under the push of the hydraulic assembly until the punching template (9) contacts the chassis and presses it into a shape that matches the depression of the shaping template (15); S2, the blocking rod (6) determines the maximum movement range of the punching template (9), and after the blocking rod (6) on the partition plate (8) contacts the blocking rod (6) on the lower surface of the partition plate (8), the upper mold (2) stops moving. During the downward movement of the upper mold (2), the protrusions (10) on both sides of the extension rod (3) press the movable plate (52) to a horizontal state, and at this time, the movable plate (52) overlaps the edge of the shaping template (15); S3. After the stamping is completed, when the upper mold (2) moves upward, the extension rod (3) drives the movable plate (52) to rotate with the docking rod (54) as the center through the protrusion (10), and the protrusion (10) also pushes the push block (53) out of the movable plate (52). The push block (53) is used to lift the chassis from the molding template (15), thereby completing automatic demoulding.

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