Punching die for bumper bar of automobile door

Abstract

The invention discloses an automobile door bumper bar punching die and relates to the technical field of punching dies, the automobile door bumper bar punching die comprises an operation table and a punching device, a punching groove is formed in the center of the upper surface of the operation table, a clamping component is arranged in the operation table, and the clamping component comprises an equidistant buffering assembly and a fixing assembly. When the anti-collision rod punching device is used for punching an anti-collision rod, firstly, the anti-collision rod is clamped and fixed through a pushing ring and a fixing assembly, when the anti-collision rod is subjected to huge impact, the impact force is transmitted to a buffer column arranged at the bottom of the pushing ring, and the buffer column slides downwards on the outer wall of a lifting column; a ball sleeve arranged in a buffer column reduces resistance and assists buffering through rolling friction, meanwhile, a sealing plate arranged at the upper end of a lifting column compresses and flows hydraulic oil in a hydraulic cavity to absorb impact energy, the impact force borne by the bumper bar is dispersed, the machining fineness of the bumper bar is improved, meanwhile, rigid impact borne by a mold is reduced, and the service life of the bumper bar is prolonged. Die abrasion and deformation are reduced, the service life of the die is prolonged, and cost is saved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of punching die, in particular to a kind of automobile door anti-collision rod punching die. BACKGROUND

[0002] With the development of science and technology, in the production of existing automobile parts, 70% of the parts are produced by automobile die, and some plate-shaped parts are usually obtained by cold stamping method, and stamping die is a special process equipment for processing materials into parts in cold stamping process.Stamping is a kind of processing method that separates or plastically deforms materials by using die installed on press machine at room temperature.

[0003] For automobile door anti-collision rod punching die, due to the great impact force of punch on die during stamping, the die will produce great vibration at the moment of impact, which will cause vibration to materials and die, reduce the processing precision of parts, reduce the processing efficiency, thereby reduce the processing cost, and also cause die loss and reduce the service life of die.In view of this, a kind of automobile door anti-collision rod punching die is proposed. SUMMARY

[0004] The purpose of the present application is to solve the problem in the prior art that the impact force of punch on die is great during stamping, the die will produce great vibration at the moment of impact, which will cause vibration to materials and die, and reduce the processing precision of parts.A kind of automobile door anti-collision rod punching die is proposed.

[0005] In order to solve the problem in the prior art, the present application adopts the following technical scheme: A kind of automobile door anti-collision rod punching die, including operation table and punching device, the upper surface center of the operation table is provided with punching slot, and the inside of the operation table is provided with clamping part, the clamping part includes equidistance buffer assembly and fixed assembly; The equidistance buffer assembly includes Lifting column, the lifting column is rotationally arranged in the inside of operation table, and the inner cavity top of the lifting column is provided with sealing plate.

[0006] Buffer column, the buffer column is slidably arranged on the outer side of lifting column, and the buffer column is provided with ball sleeve near one end of lifting column inside, the inner wall of ball sleeve is rotationally and slidably attached to lifting column, the inner cavity upper end of buffer column is provided with hydraulic chamber, and the inside of hydraulic chamber is slidably connected with sealing plate, and the upper end of buffer column is provided with push ring; Preferably, the bottom of the buffer column on one side is fixedly provided with a driven gear, and the side edge of the driven gear is engaged with a driving gear, the upper end of the driving gear is provided with a support frame, the upper end of the support frame is fixedly provided with a driving motor, the output shaft of the driving motor is fixedly connected with the axis of the driving gear through the support frame, and a second transmission belt is rotatably arranged between the buffer columns on both sides.

[0007] Preferably, the upper end of the buffer column is fixedly provided with a rotating plate, and the inner side of the rotating plate is slidably provided with a connecting block, and the side away from the rotating plate of the connecting block is fixedly connected with the pushing ring.

[0008] Preferably, the rotating plate is internally provided with an elastic member, and the two ends of the elastic member are respectively abutted with the connecting block and the rotating plate.

[0009] Preferably, the fixing assembly comprises a connecting base, and the connecting base is fixedly arranged in the operation table, rotating arms are rotatably arranged on both sides of the connecting base, and fixed clamping rings are fixedly arranged on the ends of the rotating arms away from the socket table.

[0010] Preferably, a pushing column is slidably arranged in the connecting base close to the upper end, a pushing end is fixedly arranged on the upper end of the pushing column, and the pushing end is rotatably connected with the center position of the rotating arm on both sides.

[0011] Preferably, a driven disc is rotatably arranged in the connecting base, a bidirectional screw rod is arranged on the upper end of the driven disc, a fixed nut is fixedly arranged in the pushing column, and the fixed nut slides on the outer wall of the bidirectional screw rod.

[0012] Preferably, a first transmission belt is arranged on the outer wall of the buffer column, and the other end of the first transmission belt is rotatably connected with the driven disc.

[0013] Preferably, a side plate is arranged on one side of the upper end of the operation table, a supporting plate is arranged on one end of the side plate, the side plate and the supporting plate are vertically connected, a hydraulic lifting device is arranged on the upper end of the supporting plate, and the hydraulic lifting device is fixedly connected with the punching device.

[0014] Compared with the prior art, the present application has the following advantages: 1. When punching the anti-collision bar, the push ring and the fixing assembly first clamp and fix the anti-collision bar. When the anti-collision bar is subjected to a huge impact, the impact force is transmitted to the buffer column set at the bottom of the push ring. The buffer column slides down on the outer wall of the lifting column. The ball sleeve set inside the buffer column uses rolling friction to reduce resistance and assist in buffering. At the same time, the sealing plate set at the upper end of the lifting column compresses the hydraulic oil in the hydraulic chamber, absorbs the impact energy, disperses the impact force on the anti-collision bar, improves the precision of the anti-collision bar processing, reduces the rigid impact on the mold, reduces mold wear and deformation, extends the mold service life, and saves costs. 2. The system is started by a drive motor, which drives the buffer column to rotate via the drive gear, driven gear, and transmission belt. The rotating plate at the upper end of the buffer column drives the push ring to move in a circular motion, continuously pushing the anti-collision bar and clamping it. While the push ring pushes the anti-collision bar, the first transmission belt drives the driven plate to rotate, causing the fixing nut to rise and fall at the top of the double-acting screw, thus releasing the clamping ring from the anti-collision bar. After the push ring stops pushing the anti-collision bar, it clamps the anti-collision bar. The fixing nut rotates to the top of the double-acting screw and continues to rotate. Utilizing the characteristics of the double-acting screw, the fixing nut drives the push column to move downward, thus fixing the anti-collision bar in place. These multiple structures ensure stable and precise clamping of the anti-collision bar, preventing workpiece displacement during punching, ensuring punching dimensional accuracy and cut quality, and reducing the defect rate. Attached Figure Description

[0015] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall cross-sectional structure of the present invention; Figure 3 This is a schematic diagram of the clamping component structure of the present invention; Figure 4 This is a schematic diagram of the cross-sectional structure of the equidistant buffer assembly of the present invention; Figure 5 This is a schematic diagram of the cross-sectional structure of the buffer column of the present invention; Figure 6 This is a schematic diagram of the fixed component structure of the present invention; Figure 7 This is a schematic cross-sectional view of the connecting base structure of the present invention.

[0016] The numbers in the diagram are: 1. Operating table; 11. Punching groove; 2. Side plate; 21. Support plate; 22. Hydraulic lifting device; 23. Punching device; 3, clamping component; 31, equidistant buffer assembly; 32, fixing assembly; 33, first transmission belt; 310, driving motor; 311, elastic member; 312, support frame; 313, driving gear; 314, driven gear; 315, second transmission belt; 316, buffer column; 317, rotating plate; 318, connecting block; 319, pushing ring; 3161, lifting column; 3162, ball sleeve; 3163, hydraulic cavity; 3164, sealing plate; 321, connecting base; 322, rotating arm; 323, pushing end; 324, fixed clamping ring; 325, driven disc; 326, pushing column; 327, bidirectional screw; 328, fixed nut. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0018] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "sleeved / connected", "connected" and the like should be understood broadly, for example, "connected" can be fixedly connected, or detachably connected, or integrally connected; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium; or can be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0019] Embodiment: The present embodiment provides a kind of automobile door anti-collision rod punching die, see Figures 1-7 , specifically, including operation platform 1 and punching device 23, it is characterized in that: the upper surface center of operation platform 1 is provided with punching groove 11, and the inside of operation platform 1 is provided with clamping component 3, clamping component 3 includes equidistant buffer assembly 31 and fixing assembly 32; Equidistant buffer assembly 31 includes Lifting column 3161, lifting column 3161 is rotationally arranged in the inside of operation platform 1, and the inner cavity top of lifting column 3161 is provided with sealing plate 3164.

[0020] The buffer column 316 is slid outside the lifting column 3161, a ball sleeve 3162 is arranged inside the buffer column 316 and close to one end of the lifting column 3161, the inner wall of the ball sleeve 3162 is slidably and tightly connected to the lifting column 3161, a hydraulic cavity 3163 is arranged at the upper end of the inner cavity of the buffer column 316, and a sealing plate 3164 is slidably connected inside the hydraulic cavity 3163, and the upper end of the buffer column 316 is provided with a pushing ring 319; In this optional embodiment, when the anti-collision rod is punched, the anti-collision rod is first clamped and fixed by the pushing ring 319 and the fixed assembly 32, and when the anti-collision rod is subjected to a great impact, the impact force is transmitted to the buffer column 316 arranged at the bottom of the pushing ring 319, the buffer column 316 is slid downward on the outer wall of the lifting column 3161, the ball sleeve 3162 arranged inside the buffer column 316 reduces the resistance by rolling friction to assist buffering, and the sealing plate 3164 arranged at the upper end of the lifting column 3161 compresses the hydraulic oil inside the hydraulic cavity 3163, flows to absorb impact energy, disperses the impact force received by the anti-collision rod, improves the fineness of the anti-collision rod processing, reduces the rigid impact received by the mold, reduces the wear and deformation of the mold, prolongs the service life of the mold, and saves costs; Optionally, the buffer column 316 arranged at one side is fixedly provided with a driven gear 314, the driven gear 314 is meshingly provided with a driving gear 313 at the side edge, the driving gear 313 is provided with a support frame 312 at the upper end, and the support frame 312 is fixedly provided with a driving motor 310 at the upper end, the output shaft of the driving motor 310 is fixedly connected with the shaft center of the driving gear 313 through the support frame 312, and the second transmission belt 315 is rotatably arranged between the two buffer columns 316; In this optional embodiment, the driving motor 310 drives the driving gear 313 to rotate, and the buffer column 316 is driven to rotate by the driven gear 314 at the same time, the support frame 312 is used to support the driving motor 310, and the driving motor 310 drives the two buffer columns 316 to rotate through the second transmission belt 315, the driving gear 313 and the driven gear 314 are meshingly rotatable, the rotating directions of the two buffer columns 316 are opposite, the pushing ring 319 arranged at the upper end of the buffer column 316 can push and clamp the anti-collision rod from different directions, and the stability of the punching is improved; Optionally, the buffer column 316 is fixedly provided with a rotating plate 317 at the upper end, and the connecting block 318 is slidably arranged inside the rotating plate 317 and fixedly connected with the pushing ring 319 at the side away from the rotating plate 317; In this optional embodiment, when the driving motor 310 drives the two buffer columns 316 to rotate, the connecting plate arranged at the upper end of the buffer column 316 rotates with the buffer column 316, and the pushing ring 319 rotates through the connecting plate and follows the rotation of the buffer column 316. Optionally, the rotating plate 317 is internally provided with an elastic member 311, and two ends of the elastic member 311 abut against the connecting block 318 and the rotating plate 317, respectively; In this optional embodiment, the elastic member 311 internally provided in the rotating plate 317 can reduce the rigid contact between the pushing ring 319 and the anti-collision rod when the pushing ring 319 is annularly rotated, thereby improving the service life of the mold. Meanwhile, when the anti-collision rod is impacted, the elastic member 311 can make the pushing ring 319 deform and buffer, thereby dispersing the impact on the anti-collision rod in multiple aspects and improving the stability of the anti-collision rod during the punching; Optionally, the fixing assembly 32 comprises a connecting base 321 fixedly arranged inside the operation table 1, rotating arms 322 rotatably arranged on both sides of the connecting base 321, and a fixed clamping ring 324 fixedly arranged at one end of the rotating arm 322 away from the socket table; In this optional embodiment, the connecting base 321 is used to connect the fixing assembly 32 and the operation table 1, and the rotating arms 322 rotatably arranged on both sides of the connecting base 321 can adjust the size of the inner diameter of the fixed clamping ring 324 by rotating, so as to clamp the anti-collision rod. When the pushing ring 319 operates to push the anti-collision rod, the rotating arms 322 adjust the inner diameter of the fixed clamping ring 324, cancel the clamping of the anti-collision rod, so that the anti-collision rod can move. When the pushing ring 319 clamps the anti-collision rod, the rotating arms 322 immediately adjust the inner diameter of the fixed clamping ring 324 to clamp the anti-collision rod, thereby ensuring the stability of the anti-collision rod during the punching; Optionally, a pushing column 326 is slidingly arranged inside the connecting base 321 close to the upper end, a pushing end 323 is fixedly arranged at the upper end of the pushing column 326, and the pushing end 323 is rotatably connected with the center position of the rotating arm 322 on both sides; In this optional embodiment, the pushing column 326 is used to lift the pushing end 323 to adjust the size of the inner diameter of the fixed clamping ring 324, so that the fixed clamping ring 324 can better fit and clamp the anti-collision rod, thereby preventing the anti-collision rod from deviating or shaking during the punching, ensuring the punching size, improving the product quality, matching the outer diameter of the anti-collision rod with the inner diameter, uniformly distributing the clamping force, avoiding local stress concentration to deform or damage the anti-collision rod, and protecting the anti-collision rod and the mold; Optionally, a driven disc 325 is rotatably arranged inside the connecting base 321, a bidirectional screw rod 327 is arranged at the upper end of the driven disc 325, a fixed nut 328 is fixedly arranged inside the pushing column 326, and the fixed nut 328 slides on the outer wall of the bidirectional screw rod 327; In the optional embodiment, the rotation of the driven disc 325 makes the fixed nut 328 move up and down at the upper end of the bidirectional screw rod 327, cancels the clamping of the fixed clamping ring 324 on the anti-collision rod, and after the pushing ring 319 stops pushing the anti-collision rod, the pushing ring 319 clamps the anti-collision rod, and the fixed nut 328 continues to rotate to the upper end of the bidirectional screw rod 327, and the fixed nut 328 drives the pushing column 326 to move downward by the characteristics of the bidirectional screw rod 327, so as to realize the clamping of the fixed clamping ring 324 on the anti-collision rod, and realize the synchronization of the two structures. Optionally, the first transmission belt 33 is arranged at the bottom of the outer wall of the buffer column 316 and is rotationally connected to the driven disc 325 at the other end. In the optional embodiment, the first transmission belt 33 is used to realize the synchronous operation of multiple structures, and when the pushing ring 319 pushes the anti-collision rod, the first transmission belt 33 drives the driven disc 325 to rotate, so that the fixed nut 328 moves up and down at the upper end of the bidirectional screw rod 327, and cancels the clamping of the fixed clamping ring 324 on the anti-collision rod. After the pushing ring 319 stops pushing the anti-collision rod, the pushing ring 319 clamps the anti-collision rod, and the fixed nut 328 continues to rotate to the upper end of the bidirectional screw rod 327, and the fixed nut 328 drives the pushing column 326 to move downward by the characteristics of the bidirectional screw rod 327, so as to realize the clamping of the fixed clamping ring 324 on the anti-collision rod, and realize the synchronization of the two structures by using one driving motor 310 to drive, thereby reducing the control cost and improving the synchronization of the equipment. Optionally, the operating table 1 is provided with a side plate 2 at one side of the upper end, and the side plate 2 is provided with a supporting plate 21 at one end, and the side plate 2 and the supporting plate 21 are vertically connected, and the supporting plate 21 is provided with a hydraulic lifting device 22 at the upper end, and the hydraulic lifting device 22 is fixedly connected with the punching device 23. In the optional embodiment, the side plate 2 is used to connect the supporting plate 21 and the operating table 1, and the hydraulic lifting device 22 arranged above the supporting plate 21 can drive the punching device 23 to lift by compressing the internal hydraulic oil, and the punching head arranged at the bottom of the punching device 23 is provided with two inclined surfaces of different sizes on both sides. The two inclined surfaces of different sizes can make the deformation of the anti-collision rod more uniform during punching, and the anti-collision rod will not be torn, burr or other defects due to excessive local stress during punching. The smaller inclined surface cuts into the anti-collision rod first, preliminarily separates and guides the anti-collision rod, and the larger inclined surface further completes the punching, so that the anti-collision rod at the cutting position can be separated more neatly.

[0021] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A punching die for an automotive door anti-collision bar, comprising an operating table (1) and a punching device (23), characterized in that: The operating table (1) has a punching groove (11) at the center of its upper surface, and the operating table (1) has a clamping component (3) inside, which includes an equidistant buffer component (31) and a fixing component (32). The equidistant buffer assembly (31) includes The lifting column (3161) is rotatably disposed inside the operating table (1), and a sealing plate (3164) is provided at the top of the inner cavity of the lifting column (3161). A buffer column (316) slides on the outside of a lifting column (3161), and a ball sleeve (3162) is provided inside the buffer column (316) near one end of the lifting column (3161). The inner wall of the ball sleeve (3162) rotates and slides to fit the lifting column (3161). A hydraulic chamber (3163) is provided at the upper end of the inner cavity of the buffer column (316), and a sealing plate (3164) is slidably connected inside the hydraulic chamber (3163). At the same time, a push ring (319) is provided at the upper end of the buffer column (316).

2. The stamping die for an automotive door anti-collision bar according to claim 1, characterized in that: A driven gear (314) is fixedly installed at the bottom of the buffer column (316) on one side, and a drive gear (313) is meshed on the side of the driven gear (314). A support frame (312) is installed at the upper end of the drive gear (313), and a drive motor (310) is fixedly installed at the upper end of the support frame (312). The output shaft of the drive motor (310) passes through the support frame (312) and is fixedly connected to the shaft of the drive gear (313). A second transmission belt (315) is rotatably installed between the buffer columns (316) on both sides.

3. The stamping die for an automotive door anti-collision bar according to claim 2, characterized in that: A rotating plate (317) is fixedly installed at the upper end of the buffer column (316), and a connecting block (318) is slidably installed on the inner side of the rotating plate (317). The side of the connecting block (318) away from the rotating plate (317) is fixedly connected to the push ring (319).

4. The stamping die for an automotive door anti-collision bar according to claim 3, characterized in that: The rotating plate (317) is provided with an elastic element (311), and the two ends of the elastic element (311) abut against the connecting block (318) and the rotating plate (317) respectively.

5. The stamping die for an automotive door anti-collision bar according to claim 1, characterized in that: The fixing component (32) includes a connecting base (321), and the connecting base (321) is fixedly installed inside the operating table (1). Rotating arms (322) are rotatably installed on both sides of the connecting base (321), and a fixing clamping ring (324) is fixedly installed at the end of the rotating arm (322) away from the socket.

6. The stamping die for an automotive door anti-collision bar according to claim 5, characterized in that: The connecting base (321) has a push column (326) slidably disposed near the upper end inside, and a push end (323) is fixedly disposed on the upper end of the push column (326). The two sides of the push end (323) are rotatably connected to the center position of the rotating arm (322).

7. The stamping die for an automotive door anti-collision bar according to claim 6, characterized in that: The connecting base (321) is rotatably provided with a driven plate (325), and a bidirectional lead screw (327) is provided at the upper end of the driven plate (325). A fixing nut (328) is fixedly provided inside the push column (326), and the fixing nut (328) slides on the outer wall of the bidirectional lead screw (327).

8. The stamping die for an automotive door anti-collision bar according to claim 3, characterized in that: The bottom of the outer wall of the buffer column (316) is provided with a first transmission belt (33), and the other end of the first transmission belt (33) is rotatably connected to the driven disc (325).

9. A punching die for an automotive door anti-collision bar according to claim 1, characterized in that: The operating table (1) has a side plate (2) on one side of its upper end, and a support plate (21) is provided at one end of the side plate (2). The side plate (2) is vertically connected to the support plate (21). A hydraulic lifting device (22) is provided at the upper end of the support plate (21), and the hydraulic lifting device (22) is fixedly connected to the punching device (23).

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