A continuous stamping production equipment for automobile anti-collision beams

Abstract

The present invention discloses a continuous stamping production equipment for automobile anti-collision beams, which relates to the technical field of anti-collision beam stamping, and comprises: a feeding assembly for providing continuous sheet raw materials; a base, on which a stamping cylinder is fixed, and the stamping cylinder has a vertically movable stamping end; an upper die assembly, which is fixed to the stamping end; a lower die assembly, which is fixed to the base and cooperates with the upper die assembly; when the upper die assembly and the lower die assembly are closed, the sheet raw materials located between the two are simultaneously subjected to punching processing, semi-blanking processing and upward drawing processing, wherein: the punching processing and semi-blanking processing act on the same area of ​​the sheet raw materials; the upward drawing processing acts on the sheet raw materials that have been processed in the previous sequence. The equipment realizes the synchronous processing and precise control of multiple processes through a highly integrated structural design, thereby improving production stability.

Description

Technical Field

[0001] The invention relates to the technical field of anti-collision beam stamping, and in particular to continuous stamping production equipment for automobile anti-collision beams. Background Art

[0002] As a critical safety structural component, the molding quality of automotive anti-collision beams directly impacts a vehicle's collision safety and lightweighting performance. As the automotive industry's demands for production efficiency and manufacturing precision continue to rise, the traditional step-by-step stamping process is gradually exposing multiple technical bottlenecks.

[0003] In traditional anti-collision beam production, punching, semi-blanking, and drawing processes are typically performed independently. The raw material undergoes multiple positioning, transfer, and clamping steps, which not only increases production cycle time but also introduces positioning errors due to repeated clamping, leading to quality issues such as offset hole positions and inconsistent drawing heights. Furthermore, this multi-step process requires multiple sets of molds and equipment, significantly increasing fixed asset investment and site requirements.

[0004] Furthermore, the precision and lifespan of the mold system cannot be ignored. Traditional guide structures often rely on a single guide post or plate, which can easily cause radial deviation during mold closing due to impact vibration or thermal expansion, leading to defects such as punching position deviation and wrinkling on the sidewalls during deep drawing. During the mold opening phase, the upper mold assembly can easily lift the material due to adhesion, disrupting the subsequent feeding reference. During the feeding process, the material directly rubs against the lower mold surface, easily causing surface scratches or deviation due to uneven resistance, requiring frequent machine stops for adjustment.

[0005] Furthermore, the lag in process parameter monitoring further constrains production stability. Traditional equipment lacks the ability to monitor key parameters such as clamping force and mold temperature in real time, making it impossible to adjust process conditions such as stamping speed and cooling flow in a timely manner.

[0006] Therefore, it is necessary to provide a continuous stamping production equipment for an automobile anti-collision beam to solve the above problems. Summary of the Invention

[0007] In order to solve the above problems, the present invention provides the following technical solutions: A continuous stamping production equipment for automobile anti-collision beams, comprising: a feeding assembly for providing continuous sheet raw materials; a base, on which a stamping cylinder is fixed, and the stamping cylinder has a vertically movable stamping end; an upper mold assembly, which is fixed to the stamping end; a lower mold assembly, which is fixed on the base and cooperates with the upper mold assembly; when the upper mold assembly and the lower mold assembly are closed, the sheet raw materials located between the two are simultaneously subjected to punching processing, semi-blanking processing and upward drawing processing, wherein: the punching processing and semi-blanking processing act on the same area of ​​the sheet raw materials; the upward drawing processing acts on the sheet raw materials that have been previously processed.

[0008] Preferably, the upper die assembly includes: an upper die base, which is fixed to the stamping end; an upper die plate, which is elastically connected to the upper die base through an elastic component; an integrated plate fixed to the bottom of the upper die plate, and the integrated plate is integrated with a punching column and an upper die wedge block; when the stamping stroke is completed, the upper die plate generates a first displacement relative to the upper die base, and then continues to generate a second displacement during the mold closing stage.

[0009] Preferably, the upper die base is fixed with a punching knife, and the upper die plate and the integrated plate are provided with a receiving groove adapted to the punching knife; when the punching stroke ends, the punching knife is still completely accommodated in the receiving groove; in the mold closing state, the punching knife performs a semi-punching process on the sheet material, and the punching depth is 0.75-0.85 times the thickness of the sheet material.

[0010] Preferably, a guide column is fixed to the upper mold base, and the guide column slides through the upper mold plate.

[0011] Preferably, the lower die assembly includes: a lower die base, which is fixed to the base, and a lower die plate is fixed on the lower die base; a blanking hole, which is opened through the lower die plate and the lower die base; a mounting groove, which is opened on the lower die plate and embedded with a lower die insert, and the lower die insert and the side wall of the mounting groove form a groove; a composite cylinder assembly, which is fixed to the side of the lower die base.

[0012] Preferably, the groove is embedded with an air hole, which is connected to an external gas control device; when the mold is opened, the air hole is in a negative pressure adsorption state; when stepping and feeding, the air hole is converted to a positive pressure blowing state.

[0013] Preferably, the composite cylinder assembly includes: a cylinder body, which is fixed to the side of the lower mold base; a second elastic part, a rigid part, and a first elastic part arranged in sequence from bottom to top; a pressure sensor, which is embedded in the rigid part; a temperature sensor is also embedded in the middle of the rigid part; and a measuring hole corresponding to the temperature sensor is opened in the middle of the first elastic part.

[0014] Preferably, an X-shaped stabilizing member is embedded in the second elastic member.

[0015] Preferably, the feeding assembly includes: a feeding seat, which is arranged beside the base; a conveying roller group, which is installed on the feeding seat and is used to convey sheet raw materials; a leveling roller group, which is arranged on the feeding seat and located at the discharge end of the conveying roller group, and is used to perform raw material leveling processing.

[0016] Preferably, the feeding assembly further includes: a limiting plate, which is fixed on the feeding seat and located at the discharge end of the leveling roller group, and the limiting plate is a rectangular through-groove structure; and a connecting plate, which is connected between the limiting plate and the lower mold assembly.

[0017] Compared with the prior art, the present invention provides a continuous stamping production equipment for automobile anti-collision beams, which has the following beneficial effects:

[0018] First, this equipment achieves simultaneous processing and precise control of multiple processes through a highly integrated structural design. The elastic connection design and staged displacement mechanism of the upper die assembly enable punching, semi-blanking, and drawing processes to be completed in the same stamping action.

[0019] Second, the punching knife performs partial blanking during the mold closing phase, preserving the material's continuity while providing guidance for subsequent deformation. The elastic component's pressure-maintaining effect maintains pressure after deep drawing, ensuring the molded part is fully formed and reducing the risk of springback.

[0020] Third, the lower mold assembly's composite barrel assembly utilizes a three-stage buffer structure and dual-mode sensors to achieve rigid-flexible coupling control during the mold closing process. A pressure sensor monitors the clamping force in real time, while a temperature sensor provides feedback on the mold's thermal status, providing a basis for adjusting process parameters.

[0021] Fourth, the negative pressure adsorption and positive pressure blowing functions of the air holes play a role in the mold opening and feeding stages respectively, preventing the raw material from shifting and reducing friction, thereby improving production stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the main structure of a continuous stamping production equipment for automobile anti-collision beams;

[0023] Figure 2 This is a schematic diagram of the three-dimensional structure of a continuous stamping production equipment for automobile anti-collision beams;

[0024] Figure 3 This is a schematic diagram of the three-dimensional structure of a feeding assembly in a continuous stamping production equipment for automobile anti-collision beams;

[0025] Figure 4 This is a schematic diagram of the three-dimensional structure of an upper die assembly in a continuous stamping production equipment for automobile anti-collision beams;

[0026] Figure 5 This is a schematic diagram of the three-dimensional structure of a lower die assembly in a continuous stamping production equipment for automobile anti-collision beams;

[0027] Figure 6 This is a schematic cross-sectional view of a composite tube assembly in a continuous stamping production device for automobile anti-collision beams;

[0028] In the figure: 1. Feeding assembly; 2. Base; 3. Lower die assembly; 4. Upper die assembly; 5. Punching cylinder; 6. Connecting plate; 11. Feeding seat; 12. Conveying roller group; 13. Leveling roller group; 14. Limiting plate; 31. Lower die seat; 32. Composite cylinder assembly; 33. Lower template; 34. Lower die insert; 35. Groove; 36. Air hole; 37. Blanking hole; 41. Upper die seat; 42. Upper template; 43. Integrated board; 44. Upper die wedge; 45. Punching column; 46. Accommodating groove; 47. Punching knife; 48. Guide column; 49. Elastic assembly; 321. First elastic member; 322. Measuring hole; 323. Temperature sensor; 324. Rigid member; 325. Pressure sensor; 326. Second elastic member; 327. Stabilizing member. DETAILED DESCRIPTION

[0029] The terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned description of the drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the terms used in this way can be interchangeable under appropriate circumstances, and this is merely a way of distinguishing the objects of the same attributes when describing them in the embodiments of the present application. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, so that the process, method, system, product or equipment comprising a series of units need not be limited to those units, but may include other units that are not clearly listed or inherent to these processes, methods, products or equipment.

[0030] Example: Please refer to Figures 1-6 In an embodiment of the present invention, a continuous stamping production equipment for automobile anti-collision beams is provided, including: a feeding assembly 1 for providing continuous sheet raw materials; a base 2, on which a stamping cylinder 5 is fixed, and the stamping cylinder 5 has a vertically movable stamping end; an upper die assembly 4, which is fixed to the stamping end; a lower die assembly 3, which is fixed on the base 2 and cooperates with the upper die assembly 4; when the upper die assembly 4 and the lower die assembly 3 are clamped, the sheet raw materials located between the two are simultaneously subjected to punching processing, semi-blanking processing and upward drawing processing, wherein: the punching processing and semi-blanking processing act on the same area of ​​the sheet raw materials; the upward drawing processing acts on the sheet raw materials that have been previously processed.

[0031] Among them, the sheet material that has undergone previous processing refers to: the sheet material that has undergone punching processing and semi-blanking processing, that is, the upper mold assembly 4 and the lower mold assembly 3 include two parts, the first part is used for punching processing and semi-blanking processing, and the second part is used for upward drawing processing, and the upward drawing processing can form the U-shaped groove main structure of the anti-collision beam.

[0032] During operation, the feed assembly 1 delivers a continuous sheet of material to the surface of the lower die assembly 3. At this point, the upper die assembly 4 and lower die assembly 3 are not yet in contact, and the sheet material is ready for processing. Then, the punch cylinder 5 drives the upper die assembly 4 downward, closing it with the lower die assembly 3. During this process, three steps are completed simultaneously.

[0033] In other words, the three steps are completed in a single stamping operation, without the need for secondary positioning or transfer of the raw material. In addition, the pre-separated structure formed by the semi-blanking process naturally guides the material flow during the upward drawing process.

[0034] In this embodiment, the upper mold assembly 4 includes: an upper mold base 41, which is fixed to the stamping end; an upper mold plate 42, which is elastically connected to the upper mold base 41 through an elastic component 49; an integrated plate 43 fixed below the upper mold plate 42, and the integrated plate 43 is integrated with a punching column 45 and an upper mold wedge block 44; when the stamping stroke is completed, the upper mold plate 42 generates a first displacement relative to the upper mold base 41, and then continues to generate a second displacement during the mold closing stage.

[0035] In other words, the upper die plate 42 drives the integrated plate 43 toward the sheet material, and the punching rods 45 first complete the punching process. The elastic component 49 absorbs the initial impact energy, preventing damage to the die and material caused by a hard collision. The upper die holder 41 then continues its downward movement, compressing the elastic component 49 to its limit, causing the upper die plate 42 to produce a second displacement relative to the upper die holder 41.

[0036] Continuous compression by the elastic component 49 maintains a long-term, low-stress holding pressure on the formed U-shaped groove. After the upward drawing process is completed, the holding pressure stage ensures that the material is fully formed within the mold cavity, reducing the tendency to spring back. This allows internal stress in the material to be gradually released through minor plastic deformation, avoiding shape distortion caused by sudden pressure relief.

[0037] Furthermore, the upper die base 41 is fixed with a punching knife 47, and the upper die plate 42 and the integrated plate 43 are provided with a receiving groove 46 adapted to the punching knife 47; when the punching stroke ends, the punching knife 47 is still completely accommodated in the receiving groove 46; in the mold closing state, the punching knife 47 performs a semi-punching process on the sheet material, and the punching depth is 0.75-0.85 times the thickness of the sheet material.

[0038] In other words, the provision of the accommodating groove 46 ensures that the punching blade 47 does not affect the sheet material during the stamping stroke. During the die closing process, the punching blade 47 performs a semi-blanking process on the sheet material, with a punching depth of 0.75-0.85 times the sheet material thickness. This ensures the continuity of the sheet material and facilitates subsequent step feeding and unloading. Furthermore, the pre-separation structure formed by the semi-blanking process naturally guides the material flow during the upward drawing process.

[0039] In order to improve the stability of the upper mold assembly 4 , a guide column 48 is fixed to the upper mold base 41 , and the guide column 48 is slidably arranged through the upper mold plate 42 .

[0040] In this embodiment, the lower mold assembly 3 includes: a lower mold base 31, which is fixed to the base 2, and a lower mold plate 33 is fixed on the lower mold base 31; a blanking hole 37, which is opened through the lower mold plate 33 and the lower mold base 31; a mounting groove, which is opened on the lower mold plate 33 and embedded with a lower mold insert 34, and the lower mold insert 34 and the side wall of the mounting groove form a groove 35; a composite cylinder assembly 32, which is fixed to the side of the lower mold base 31.

[0041] Among them, the blanking hole 37 corresponds to the punching column 45 , the groove 35 corresponds to the upper die wedge 44 , and the composite cylinder assembly 32 corresponds to the guide column 48 .

[0042] The guide column 48 passes through the upper mold plate 42 and forms a sliding pair with the composite cylinder assembly 32 to eliminate radial deviation during mold closing and ensure the axial alignment accuracy of the punching column 45 and the blanking hole 37, and the upper mold wedge block 44 and the groove 35.

[0043] Furthermore, the upper die wedge 44 and the lower die insert 34 should be equipped with cooling water channels to reduce the temperature gradient and reduce the risk of thermal cracks, which will not be elaborated here.

[0044] Furthermore, the groove 35 is embedded with an air hole 36, which is connected to an external gas control device; when the mold is opened, the air hole 36 is in a negative pressure adsorption state; when the sheet raw material is performing step feeding, the air hole 36 is converted to a positive pressure blowing state.

[0045] When the mold is opened and the punch cylinder 5 returns, the moment the upper mold assembly 4 separates from the lower mold assembly 3, the air holes 36 switch to a negative pressure adsorption state. An external air control device generates negative pressure in the air holes 36, pressing the sheet material against the surface of the lower mold assembly 3. This eliminates any warping or deviation of the sheet material caused by adhesion during the upward movement of the upper mold assembly 4, ensuring the accuracy of the subsequent feeding reference point.

[0046] When the sheet material is being fed in a step-by-step manner, air holes 36 switch to a positive-pressure blowing mode. Compressed air at 0.6-0.8 MPa flows through air holes 36, forming an air film that shifts the contact between the sheet material and the lower die assembly 3 from sliding friction to fluid lubrication. This positive-pressure airflow exerts a directional thrust on the edge of the sheet material, automatically correcting feed deviation.

[0047] In this embodiment, the composite cylinder assembly 32 includes: a cylinder body, which is fixed to the side of the lower mold base 31 and is slidably connected to the guide column 48; a second elastic member 326, a rigid member 324, and a first elastic member 321 arranged in sequence from bottom to top; a pressure sensor 325, which is embedded in the rigid member 324; a temperature sensor 323 is also embedded in the middle of the rigid member 324; a measuring hole 322 corresponding to the temperature sensor 323 is opened in the middle of the first elastic member 321.

[0048] The second elastic member 326 can be made of high-damping rubber or polyurethane material to absorb the impact energy in the initial stage of mold closing and protect the pressure sensor 325 from overload impact.

[0049] The rigid part 324 may be made of a 40Cr alloy steel matrix, which has a pressure sensor 325 and a temperature sensor 323 embedded therein, forming a rigid-flexible coupling structure to ensure signal transmission stability.

[0050] The first elastic member 321 may be a low-rigidity elastic member, and the temperature sensor 323 is brought close to the guide post 48 through the measuring hole 322 , while filtering high-frequency vibration noise.

[0051] In addition, by setting up a pressure sensor 325, it is possible to sense in real time whether the mold is closed in place, and by using the temperature sensor 323, it is possible to sense the temperature of the guide column 48. The temperature of the guide column 48 is jointly affected by the external temperature and the impact frequency of the guide column 48, and can reflect the temperature of the upper mold assembly 4 and the lower mold assembly 3. Monitoring it can provide data support for cooling the upper mold assembly 4 and the lower mold assembly 3.

[0052] Furthermore, an X-shaped stabilizing member 327 is embedded in the second elastic member 326 .

[0053] In this embodiment, the feeding assembly 1 includes: a feeding seat 11, which is arranged next to the base 2; a conveying roller group 12, which is installed on the feeding seat 11 and is used to convey sheet raw materials; a leveling roller group 13, which is arranged on the feeding seat 11 and is located at the discharge end of the conveying roller group 12, and is used to perform raw material leveling processing.

[0054] Furthermore, the feeding assembly 1 also includes: a limit plate 14, which is fixed on the feeding seat 11 and located at the discharge end of the leveling roller group 13, and the limit plate 14 is a rectangular groove structure; a connecting plate 6, which is connected between the limit plate 14 and the lower mold assembly 3.

[0055] In this embodiment, mechanical straightening and precision guiding are used instead of manual intervention to improve the flatness and positioning accuracy of the sheet material to a standard level.

[0056] The above is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A continuous stamping production equipment for automobile anti-collision beams, characterized in that: include: A feeding assembly (1) for providing continuous sheet-like raw materials; A base (2) on which a punching cylinder (5) is fixed, wherein the punching cylinder (5) has a punching end that moves vertically; an upper die assembly (4) fixed to the punching end; A lower mold assembly (3) fixed on the base (2) and cooperating with the upper mold assembly (4); When the upper mold assembly (4) and the lower mold assembly (3) are closed, the sheet material located between the two is subjected to a punching process, a semi-blanking process, and an upward drawing process simultaneously; The upper mold assembly (4) comprises: an upper die base (41) fixed to the punching end; An upper mold plate (42) elastically connected to the upper mold base (41) via an elastic component (49); An integrated plate (43) is fixed below the upper mold plate (42), and a punching column (45) and an upper mold wedge (44) are integrated on the integrated plate (43); The upper die base (41) is fixed with a punching knife (47), and the upper die plate (42) and the integrated plate (43) are provided with a receiving groove (46) adapted to the punching knife (47); The punching process and the semi-blanking process act on the same area of ​​the sheet material; The upward drawing process acts on the sheet material that has been previously processed; During punching, the upper template (42) drives the integrated board (43) to quickly approach the sheet material, the upper template (42) generates a first displacement relative to the upper die base (41), the punching column (45) completes the punching process, and the punching knife (47) is still completely accommodated in the accommodating groove (46); When the mold is closed, the upper mold base (41) continues to move downward, compressing the elastic component (49) to the limit, and the upper mold plate (42) generates a second displacement relative to the upper mold base (41). The punching knife (47) performs a semi-punching process on the sheet material, and the punching depth is 0.75-0.85 times the thickness of the sheet material; The lower mold assembly (3) comprises: A lower die base (31) is fixed to the base (2), and a lower template (33) is fixed on the lower die base (31); A blanking hole (37) is provided through the lower mold plate (33) and the lower mold base (31); A mounting groove is provided on the lower template (33) and is embedded with a lower mold insert (34), wherein the lower mold insert (34) and the side wall of the mounting groove form a groove (35); A composite cylinder assembly (32) fixed to the side of the lower die base (31); The groove (35) is embedded with an air hole (36), and the air hole (36) is connected to an external gas control device; When the mold is opened, the air holes (36) are in a negative pressure adsorption state; When stepping and feeding, the air hole (36) is converted into a positive pressure blowing state; The composite cylinder assembly (32) comprises: a cylinder, which is fixed to the side of the lower die base (31); A second elastic member (326), a rigid member (324), and a first elastic member (321) are arranged in sequence from bottom to top; a pressure sensor (325) embedded in the rigid member (324); A temperature sensor (323) is also embedded in the middle of the rigid member (324); A measuring hole (322) corresponding to a temperature sensor (323) is provided in the middle of the first elastic member (321); An X-shaped stabilizing member (327) is embedded in the second elastic member (326).

2. The continuous stamping production equipment for automobile anti-collision beams according to claim 1, characterized in that: The upper die seat (41) is fixed with a guide column (48), and the guide column (48) is slidably arranged to pass through the upper die plate (42).

3. The continuous stamping production equipment for automobile anti-collision beams according to claim 1, characterized in that: The feeding assembly (1) comprises: A feeding seat (11), which is arranged beside the base (2); A conveying roller group (12), which is installed on the feeding seat (11) and is used for conveying sheet materials; A leveling roller group (13) is arranged on the feeding seat (11) and located at the discharge end of the conveying roller group (12), and is used to perform a leveling process on the raw materials.

4. The continuous stamping production equipment for automobile anti-collision beams according to claim 3, characterized in that: The feeding assembly (1) further comprises: A limit plate (14) is fixed on the feeding seat (11) and is located at the discharge end of the leveling roller group (13), and the limit plate (14) is a rectangular through-groove structure; A connecting plate (6) is connected between the limiting plate (14) and the lower die assembly (3).

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