Continuous stamping production equipment for automobile anti-collision beam

Abstract

The invention discloses continuous stamping production equipment for an automobile anti-collision beam, and relates to the technical field of stamping of anti-collision beams, and the continuous stamping production equipment comprises a feeding assembly for providing continuous sheet-shaped raw materials; a stamping cylinder is fixed on the base, and the stamping cylinder is provided with a stamping end which moves vertically; the upper die assembly is fixed to the stamping end; the lower die assembly is fixed on the base and is matched with the upper die assembly; when the upper die assembly and the lower die assembly are assembled, punching treatment, semi-blanking treatment and upward deep drawing treatment are synchronously carried out on the sheet-shaped raw materials located between the upper die assembly and the lower die assembly, and the punching treatment and the semi-blanking treatment act on the same area of the sheet-shaped raw materials; the upward deep drawing treatment acts on the sheet-shaped raw materials subjected to the previous treatment, through the highly-integrated structural design, synchronous machining and precise control of multiple working procedures are achieved, and the production stability is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of anti-collision beam stamping, and particularly to a continuous stamping production device for an automobile anti-collision beam. Background Art

[0002] As a key safety structural component, the forming quality of an automobile anti-collision beam directly affects the vehicle's collision safety performance and lightweight level. With the continuous improvement of the requirements for production efficiency and manufacturing precision in the automotive industry, the traditional step-by-step stamping process has gradually revealed multiple technical bottlenecks.

[0003] In the traditional production of anti-collision beams, punching, semi-blanking, and drawing processes usually need to be implemented independently. The raw material needs to be positioned, transferred, and clamped multiple times, which not only prolongs the production cycle but also easily introduces positioning errors due to repeated clamping, resulting in quality problems such as hole position deviation and inconsistent drawing height. At the same time, step-by-step processing requires multiple sets of molds and equipment, significantly increasing the fixed asset investment and floor space occupation.

[0004] Moreover, the accuracy and service life of the mold system cannot be ignored. Traditional guiding structures mostly rely on a single guiding column or guide plate, and it is easy to generate radial deviation due to impact vibration or thermal expansion during mold closing, resulting in defects such as punching position deviation and wrinkling on the side wall of drawing. During the mold opening stage, the upper mold assembly is prone to lift the raw material due to adhesion force, destroying the subsequent feeding reference; during the feeding process, the raw material directly rubs against the surface of the lower mold, easily causing surface scratches or deviation due to uneven resistance, and frequent shutdowns are required for adjustment.

[0005] In addition, the lag of process parameter monitoring means further restricts production stability. Traditional equipment lacks the ability to monitor key parameters such as mold closing force and mold temperature in real time, and cannot adjust process conditions such as stamping speed and cooling flow rate in a timely manner.

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

[0007] To solve the above problems, the present invention provides the following technical solution: A continuous stamping production device for an automobile anti-collision beam, comprising: a feeding assembly for providing continuous sheet-shaped raw materials; a base on which a stamping cylinder is fixed, the stamping cylinder having a stamping end that moves vertically; an upper mold assembly fixed to the stamping end; a lower mold assembly fixed to the base and cooperating with the upper mold assembly; when the upper mold assembly and the lower mold assembly are closed, the sheet-shaped raw material located between them is simultaneously subjected to punching treatment, semi-blanking treatment, and upward drawing treatment, wherein: the punching treatment and the semi-blanking treatment act on the same area of the sheet-shaped raw material; the upward drawing treatment acts on the sheet-shaped raw material after the previous treatment.

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

[0009] Preferably, a punching cutter is fixed to the upper die base, and a receiving groove adapted to the punching cutter is provided on the upper template and the integrated board; when the stamping stroke ends, the punching cutter is still completely received in the receiving groove; in the die closed state, the punching cutter performs semi-blanking on the sheet material, and the blanking depth is 0.75 - 0.85 times the thickness of the sheet material.

[0010] Preferably, a guiding column is fixed to the upper die base, and the guiding column slidably penetrates through the upper template.

[0011] Preferably, the lower die assembly includes: a lower die base fixed to the base, and a lower template fixed to the lower die base; a blanking hole penetrating through the lower template and the lower die base; a mounting groove provided on the lower template and fitted with a lower die insert, and a groove is formed between the lower die insert and the side wall of the mounting groove; a composite cylinder assembly fixed to the side of the lower die base.

[0012] Preferably, an air hole is fitted in the groove, and the air hole communicates with an external gas control device; when the die is opened, the air hole is in a negative pressure adsorption state; when step feeding is performed, the air hole is converted into a positive pressure blowing state.

[0013] Preferably, the composite cylinder assembly includes: a cylinder fixed to the side of the lower die base; a second elastic member, a rigid member, and a first elastic member arranged in sequence from bottom to top; a pressure sensor fitted in the rigid member; a temperature sensor is also fitted in the middle of the rigid member; a measurement hole corresponding to the temperature sensor is provided in the middle of the first elastic member.

[0014] Preferably, an X-shaped stability enhancing member is fitted in the second elastic member.

[0015] Preferably, the feeding assembly includes: a feeding base arranged beside the base; a conveying roller group installed on the feeding base for conveying the sheet material; a leveling roller group arranged on the feeding base and located at the discharging end of the conveying roller group for performing leveling treatment on the raw material.

[0016] Preferably, the feeding assembly further includes: a limiting plate fixed to the feeding base and located at the discharging end of the leveling roller group, and the limiting plate is of a rectangular through groove structure; a connecting plate connecting the limiting plate and the lower die assembly.

[0017] Compared with the prior art, the present invention provides a continuous stamping production device for an automobile anti-collision beam, having the following beneficial effects: First, through the highly integrated structural design of this device, synchronous processing and precise control of multiple processes are achieved. Among them, the elastic connection design and phased displacement mechanism of the upper die assembly enable punching, semi-blanking, and drawing processes to be completed in the same stamping action.

[0018] Second, the punching die completes partial semi-blanking during the die closing stage, retaining the continuity of the raw material and providing guidance for subsequent deformation. The pressure maintaining effect of the elastic component continuously applies pressure after drawing is completed, ensuring that the formed part is fully shaped and reducing the risk of springback.

[0019] Third, the composite cylinder assembly of the lower die assembly realizes the rigid-flexible coupling control during the die closing process through a three-stage buffer structure and a dual-mode sensor. The pressure sensor monitors the die closing force in real time, and the temperature sensor feedbacks the thermal state of the die, providing a basis for adjusting process parameters.

[0020] Fourth, the negative pressure adsorption and positive pressure blowing functions of the air holes play roles in the die opening and feeding stages respectively, preventing the raw material from shifting and reducing friction, and improving production stability. Description of the Drawings

[0021] Figure 1 It is a front view structural schematic diagram of a continuous stamping production device for an automobile anti-collision beam; Figure 2 It is a three-dimensional structural schematic diagram of a continuous stamping production device for an automobile anti-collision beam; Figure 3 It is a three-dimensional structural schematic diagram of a feeding component in a continuous stamping production device for an automobile anti-collision beam; Figure 4 It is a three-dimensional structural schematic diagram of an upper die assembly in a continuous stamping production device for an automobile anti-collision beam; Figure 5 It is a three-dimensional structural schematic diagram of a lower die assembly in a continuous stamping production device for an automobile anti-collision beam; Figure 6 It is a sectional structural schematic diagram of a composite cylinder assembly in a continuous stamping production device for an automobile anti-collision beam; In the figure: 1. Feeding component; 2. Base; 3. Lower die component; 4. Upper die component; 5. Stamping cylinder; 6. Connecting material plate; 11. Feeding seat; 12. Conveyor roller group; 13. Flattening roller group; 14. Limit plate; 31. Lower die base; 32. Composite cylinder component; 33. Lower template; 34. Lower die insert; 35. Groove; 36. Air hole; 37. Blanking hole; 41. Upper die base; 42. Upper template; 43. Integrated plate; 44. Upper die wedge block; 45. Punching column; 46. Accommodating groove; 47. Punching knife; 48. Guide post; 49. Elastic component; 321. First elastic member; 322. Measuring hole; 323. Temperature sensor; 324. Rigid member; 325. Pressure sensor; 326. Second elastic member; 327. Stability enhancing member. Detailed implementation manner

[0022] The terms "first", "second", etc. in the description, claims and above-mentioned accompanying drawing description of this application are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that such terms can be interchanged under appropriate circumstances, and this is only a way of distinguishing objects with the same attributes when describing the embodiments of this application. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion, so that a process, method, system, product or device comprising a series of units does not have to be limited to those units, but may include other units not clearly listed or inherent to these processes, methods, products or devices.

[0023] Embodiment: Please refer to Figures 1 - 6 , in the embodiment of the present invention, a continuous stamping production device for an automobile anti-collision beam is provided, including: a feeding component 1 for providing continuous sheet-shaped raw materials; a base 2 on which a stamping cylinder 5 is fixed, and the stamping cylinder 5 has a stamping end that moves vertically; an upper die component 4 fixed to the stamping end; a lower die component 3 fixed to the base 2 and cooperating with the upper die component 4; when the upper die component 4 and the lower die component 3 are closed, the sheet-shaped raw material located between the two is synchronously subjected to punching treatment, semi-blanking treatment and upward drawing treatment, wherein: the punching treatment and the semi-blanking treatment act on the same area of the sheet-shaped raw material; the upward drawing treatment acts on the sheet-shaped raw material after the previous treatment.

[0024] Among them, the sheet-shaped raw material after the previous treatment refers to the sheet-shaped raw material that has undergone punching treatment and semi-blanking treatment. That is to say, the upper die component 4 and the lower die component 3 include two parts. The first part is used for punching treatment and semi-blanking treatment, and the second part is used for upward drawing treatment, and the upward drawing treatment can form the U-shaped groove main structure of the anti-collision beam.

[0025] During implementation, the feeding component 1 conveys the continuous sheet-shaped raw material to the surface of the lower die component 3. At this time, the upper die component 4 and the lower die component 3 have not yet come into contact, and the sheet-shaped raw material is in a state to be processed. Then, the stamping cylinder 5 drives the upper die component 4 to move downward and close with the lower die component 3. During this process, the three processes are completed synchronously.

[0026] That is to say, the three processes are completed in the same stamping action, and the raw material does not need secondary positioning or transfer. Moreover, the pre-separation structure formed by the semi-blanking process naturally guides the material flow during the upward drawing process.

[0027] In this embodiment, the upper die component 4 includes: an upper die base 41, which is fixed to the stamping end; an upper template 42, which is elastically connected to the upper die base 41 through an elastic component 49; an integrated plate 43, which is fixed below the upper template 42, and a punching column 45 and an upper die wedge 44 are integrated on the integrated plate 43; when the stamping stroke is completed, the upper template 42 generates a first displacement relative to the upper die base 41, and then continues to generate a second displacement during the mold closing stage.

[0028] That is to say, the upper template 42 drives the integrated plate 43 to quickly approach the sheet-shaped raw material, and the punching column 45 first completes the punching process. The elastic component 49 absorbs the initial impact energy to avoid damage to the mold and the material caused by hard collision. Then, the upper die base 41 continues to descend, compressing the elastic component 49 to the limit, and the upper template 42 generates a second displacement relative to the upper die base 41.

[0029] Through the continuous compression of the elastic component 49, a long-time and low-stress pressure holding effect is applied to the formed U-shaped groove. After the upward drawing process is completed, the pressure holding stage ensures that the material is fully shaped in the mold cavity, reducing the springback tendency. It allows the internal stress of the material to be gradually released through small plastic deformations, avoiding shape distortion caused by sudden pressure relief.

[0030] Furthermore, a punching cutter 47 is fixed on the upper die base 41, and the upper template 42 and the integrated plate 43 are provided with a receiving groove 46 adapted to the punching cutter 47; when the stamping stroke ends, the punching cutter 47 is still completely received in the receiving groove 46; in the mold closed state, the punching cutter 47 performs a semi-blanking process on the sheet-shaped raw material, and the blanking depth is 0.75 - 0.85 times the thickness of the sheet-shaped raw material.

[0031] That is to say, by setting the receiving groove 46, it can be ensured that the punching cutter 47 does not affect the sheet-shaped raw material during the stamping stroke. During the mold closing process, the punching cutter 47 performs a semi-blanking process on the sheet-shaped raw material, and the blanking depth is 0.75 - 0.85 times the thickness of the sheet-shaped raw material, ensuring the continuity of the sheet-shaped raw material and facilitating the subsequent step feeding and smooth blanking. Moreover, the pre-separation structure formed by the semi-blanking process naturally guides the material flow during the upward drawing process.

[0032] To improve the stability of the upper die assembly 4, a guide post 48 is fixed to the upper die base 41, and the guide post 48 slidably penetrates through the upper template 42.

[0033] In this embodiment, the lower die assembly 3 includes: a lower die base 31, which is fixed to the base 2, and a lower template 33 is fixed to the lower die base 31; a blanking hole 37, which is opened through the lower template 33 and the lower die base 31; an installation groove, which is opened on the lower template 33 and a lower die insert 34 is embedded, and a groove 35 is formed between the lower die insert 34 and the side wall of the installation groove; a composite cylinder assembly 32, which is fixed to the side of the lower die base 31.

[0034] Among them, the blanking hole 37 corresponds to the punching post 45, the groove 35 corresponds to the upper die wedge 44, and the composite cylinder assembly 32 corresponds to the guide post 48.

[0035] The guide post 48 penetrates through the upper template 42 and forms a sliding pair with the composite cylinder assembly 32, eliminating the radial offset during mold closing and ensuring the axial alignment accuracy between the punching post 45 and the blanking hole 37, and between the upper die wedge 44 and the groove 35.

[0036] Furthermore, cooling water channels should be configured for the upper die wedge 44 and the lower die insert 34 to reduce the temperature gradient and the risk of thermal cracks, which will not be elaborated here.

[0037] Furthermore, an air hole 36 is embedded in the groove 35, and the air hole 36 is communicated with an external gas control device; when the mold is opened, the air hole 36 is in a negative pressure adsorption state; when the sheet material performs step feeding, the air hole 36 is converted into a positive pressure blowing state.

[0038] When the mold is opened, when the stamping cylinder 5 returns and the upper die assembly 4 is separated from the lower die assembly 3 instantaneously, the air hole 36 switches to the negative pressure adsorption state. Through the external gas control device, a negative pressure is generated in the air hole 36 to tightly attach the sheet material to the surface of the lower die assembly 3. Eliminate the warping or offset of the sheet material caused by the adhesion force when the upper die assembly 4 moves upward, and ensure the accuracy of the subsequent feeding reference point.

[0039] When the sheet material performs step feeding, the air hole 36 switches to the positive pressure blowing state. Compressed air of 0.6MPa - 0.8MPa forms an air film through the air hole 36, changing the contact state between the sheet material and the surface of the lower die assembly 3 from sliding friction to fluid lubrication. The positive pressure air flow generates a directional thrust on the edge of the sheet material, automatically correcting the feeding offset.

[0040] 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 post 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 measurement hole 322 corresponding to the temperature sensor 323 is provided in the middle of the first elastic member 321.

[0041] The second elastic member 326 can be made of high-damping rubber or polyurethane material to absorb the impact energy at the initial stage of mold closing and protect the pressure sensor 325 from overload impact.

[0042] The rigid member 324 can be made of 40Cr alloy steel matrix, with the pressure sensor 325 and the temperature sensor 323 embedded therein to form a rigid-flexible coupling structure to ensure the stability of signal transmission.

[0043] The first elastic member 321 can be a low-stiffness elastic member, and the temperature sensor 323 is brought close to the guide post 48 through the measurement hole 322, while filtering high-frequency vibration noise.

[0044] In addition, by setting the pressure sensor 325, it can be sensed in real time whether the mold closing is in place, and by the temperature sensor 323, the temperature of the guide post 48 can be sensed. The temperature of the guide post 48 is jointly affected by the external temperature and the impact frequency of the guide post 48, which 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.

[0045] Further, an X-shaped stability-increasing member 327 is embedded in the second elastic member 326.

[0046] In this embodiment, the feeding assembly 1 includes: a feeding base 11, which is arranged beside the base 2; a conveying roller group 12, which is installed on the feeding base 11 and is used for conveying sheet-shaped raw materials; a leveling roller group 13, which is arranged on the feeding base 11 and is located at the discharge end of the conveying roller group 12 and is used for performing leveling treatment on the raw materials.

[0047] Further, the feeding assembly 1 further includes: a limiting plate 14, which is fixed to the feeding base 11 and is located at the discharge end of the leveling roller group 13. The limiting plate 14 is of a rectangular groove structure; a connecting plate 6, which is connected between the limiting plate 14 and the lower mold assembly 3.

[0048] In this embodiment, mechanical straightening and precise guiding are used to replace manual intervention, and the flatness and positioning accuracy of the sheet-shaped raw materials are improved to the standard level.

[0049] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes, shall be covered by the protection scope of the present invention.

Claims

1. A continuous stamping production device for an automobile anti-collision beam, characterized in that, Comprising: A feeding component (1) for providing a continuous sheet-shaped raw material; A base (2) on which a stamping cylinder (5) is fixed, and the stamping cylinder (5) has a stamping end that moves vertically; An upper die component (4) fixed to the stamping end; A lower die component (3) fixed to the base (2) and cooperating with the upper die component (4); When the upper die component (4) and the lower die component (3) are closed, the sheet-shaped raw material located between the two is synchronously subjected to punching, semi-blanking, and upward drawing processes, where: The punching and semi-blanking processes act on the same area of the sheet-shaped raw material; The upward drawing process acts on the sheet-shaped raw material after the previous process.

2. The continuous stamping production equipment for an automobile anti-collision beam according to claim 1, characterized in that, The upper die component (4) includes: An upper die base (41) fixed to the stamping end; An upper template (42) elastically connected to the upper die base (41) through an elastic component (49); An integrated board (43) fixed below the upper template (42), and a punching column (45) and an upper die wedge block (44) are integrated on the integrated board (43); When the stamping stroke is completed, the upper template (42) generates a first displacement relative to the upper die base (41), and then continues to generate a second displacement during the die closing stage.

3. The continuous stamping production equipment for an automobile anti-collision beam according to claim 2, characterized in that, The upper die base (41) is fixed with a punching cutter (47), and the upper template (42) and the integrated board (43) are provided with accommodation grooves (46) adapted to the punching cutter (47); When the stamping stroke ends, the punching cutter (47) is still completely accommodated in the accommodation groove (46); In the die closed state, the punching cutter (47) performs a semi-blanking process on the sheet-shaped raw material, and the blanking depth is 0.75 - 0.85 times the thickness of the sheet-shaped raw material.

4. A continuous stamping production device for an automobile anti-collision beam according to claim 2, characterized in that, The upper die base (41) is fixed with a guiding column (48), and the guiding column (48) slidably penetrates through the upper template (42).

5. The continuous stamping production equipment for an automobile anti-collision beam according to claim 1, characterized in that, The lower die component (3) includes: A lower die base (31) fixed to the base (2), and a lower template (33) is fixed on the lower die base (31); A blanking hole (37) is penetrated and opened in the lower template (33) and the lower die base (31); An installation groove is opened on the lower template (33), and a lower die insert (34) is embedded, and the lower die insert (34) and the side wall of the installation groove form a groove (35); A composite cylinder component (32) fixed to the side of the lower die base (31).

6. The continuous stamping production equipment for an automobile anti-collision beam according to claim 5, characterized in that, An air hole (36) is embedded in the groove (35), and the air hole (36) is connected to an external gas control device; When the die is opened, the air hole (36) is in a negative pressure adsorption state; When step feeding is performed, the air hole (36) is converted to a positive pressure blowing state.

7. The continuous stamping production equipment for an automobile anti-collision beam according to claim 5, characterized in that, The composite cylinder component (32) includes: A cylinder body 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) 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 the temperature sensor (323) is formed in the middle of the first elastic member (321).

8. A continuous stamping production device for an automobile anti-collision beam according to claim 7, characterized in that, An X-shaped stability enhancing member (327) is embedded in the second elastic member (326).

9. The continuous stamping production equipment for an automobile anti-collision beam according to claim 1, characterized in that, The feeding assembly (1) includes: A feeding base (11) disposed beside the base (2); A conveying roller set (12) mounted on the feeding base (11) for conveying sheet-shaped raw materials; A flattening roller set (13) disposed on the feeding base (11) and located at the discharge end of the conveying roller set (12) for performing flattening treatment on the raw materials.

10. The continuous stamping production equipment for an automobile anti-collision beam according to claim 9, characterized in that, The feeding assembly (1) further includes: A limiting plate (14) fixed to the feeding base (11) and located at the discharge end of the flattening roller set (13), the limiting plate (14) having a rectangular through-groove structure; A connecting plate (6) connecting the limiting plate (14) and the lower die assembly (3).

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