Automobile decoration strip punching equipment

Abstract

The utility model discloses automobile decorative strip punching equipment, which belongs to the technical field of automobile accessory processing and comprises a bottom frame, a working table is arranged on the upper end face of the bottom frame along the length direction of the bottom frame, and punching mechanisms matched with workpiece punched holes in number and position are arranged on the working surface of the working table along the length direction of workpieces. The punching mechanism comprises a mounting seat, an oil cylinder is arranged on the mounting seat, a mounting block, a pressing block and a fixing block are arranged in the mounting seat at intervals in the punching direction, and a piston rod of the oil cylinder penetrates through the mounting seat and is connected with the mounting block; a punching needle is arranged in the installation block in the punching direction, a die holder is installed on the fixing base through a fastener, and a punching sleeve matched with the punching needle to achieve punching operation is arranged in the die holder. A hydraulic station used for providing power and controlling the oil cylinders to act is arranged on one side of the bottom frame. According to the utility model, a punching mode of integral punching is adopted, so that the punching process is fast in rhythm and high in efficiency, and the punching mechanism adopts a standard unit, so that the speed of replacing spare parts is greatly improved due to universality.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile parts processing, and particularly relates to an automobile trim punching device. Background Art

[0002] In the process of manufacturing automobile trims, the punching process is an essential part, which plays a crucial role in the quality and performance of the trims. To meet this requirement, the commonly used punching device mainly consists of a fixed table and a punching mechanism. The fixed table is responsible for stably carrying and fixing the automobile trim to be punched, ensuring that it does not shift or shake during the punching process, so as to guarantee the accuracy and consistency of punching. The punching mechanism is the core execution part of the whole device. According to the preset punching parameters and positions, it precisely punches the required holes on the trim through the coordinated action of the punch pin and the punch sleeve.

[0003] A prior art discloses an automobile trim punching device with the publication number CN214871095U. In this prior art, when the punching assembly works, the hydraulic cylinder drives the two hydraulic rods at the bottom to descend, so that the punching head at the bottom of the first punching plate passes through the second punching plate to punch the trim in the clamping block. The above prior art solution has the following defects: 1. The problem of bruising caused by rigid connection. When the punching head passes through the second punching plate for punching, the first punching plate and the second punching plate may have rigid contact and generate a large impact force, resulting in the trim being bruised or deformed; 2. The structure of the hydraulic cylinder and the two hydraulic rods increases the complexity of the system and also increases the maintenance and repair costs.

[0004] In addition, in actual operation, due to various factors such as the structural design, installation method or fastening degree of the punch pin and the punch sleeve, the replacement process is often not smooth. This not only affects the normal production rhythm, increases unnecessary downtime, but also may cause product quality problems due to improper replacement, such as offset hole positions, inconsistent hole diameters, etc. Therefore, as the key components directly participating in the punching operation, the convenience of replacing the punch pin and the punch sleeve is crucial for improving the efficiency and product quality of the automobile trim punching process. Summary of the Invention

[0005] Aiming at the problems existing in the prior art, the utility model provides an automobile trim punching device, which adopts an integral punching and cutting method, making the punching process have a fast rhythm and high efficiency. Moreover, the punching mechanism adopts standard units, and the vulnerable parts are easy to replace, and the versatility greatly improves the speed of replacing spare parts.

[0006] The present utility model is realized as follows. An automotive trim punching device, characterized in that it includes a chassis, and a workbench surface is arranged on the upper end surface of the chassis along the length direction of the chassis. The working surface of the workbench surface is provided with a punching mechanism that matches the number and position of holes punched in the workpiece along the length direction of the workpiece.

[0007] The punching mechanism includes a mounting seat. An oil cylinder is arranged on the mounting seat, and the extending direction of the piston rod of the oil cylinder is the same as the stamping direction. Inside the mounting seat, a mounting block, a pressure block, and a fixing block are arranged at intervals along the stamping direction. The piston rod of the oil cylinder penetrates through the mounting seat and is connected to the mounting block. A guiding and connecting member is arranged inside the mounting block. The connecting end of the guiding and connecting member penetrates through the mounting block and extends into the pressure block. An elastic member is sleeved on the guiding and connecting member between the mounting block and the pressure block. An ejector pin is arranged inside the mounting block along the stamping direction. The stamping end of the ejector pin sequentially penetrates through the mounting block and the pressure block and extends towards the fixing block. A die holder is installed on the fixing block through fasteners. An ejector sleeve that cooperates with the ejector pin to perform the punching operation is arranged inside the die holder.

[0008] A hydraulic station for providing power and controlling the operation of the oil cylinder is arranged on one side of the chassis.

[0009] Further, a discharging block is arranged on the pressure block at the position where the ejector pin penetrates.

[0010] Further, a linear guide rail assembly is arranged inside the mounting seat along the moving direction of the piston rod of the oil cylinder. The linear guide rail assembly includes a first slider and a second slider that are sequentially arranged on the guide rail in the stamping direction. The mounting block is arranged on the first slider, and the pressure block is arranged on the second slider. The arranged linear guide rail assembly can provide stable support for the mounting block and the pressure block, ensure that the mounting block and the pressure block will not shake or become unstable during movement, and provide precise linear movement for the mounting block and the pressure block to achieve smooth movement.

[0011] Further, a floating joint is arranged at the end of the piston rod of the oil cylinder. The arranged floating joint can absorb the eccentric load and lateral load generated by the eccentricity of the piston rod and the load or the non-parallel installation on the piston rod, avoid the piston rod from being bent and damaged due to the non-parallel installation of the oil cylinder, increase the service life of the oil cylinder. A connecting block is arranged at the upper end of the mounting block. A connecting groove is arranged inside the connecting block. The connecting end of the floating joint is placed in the connecting groove. The mounting end of the ejector pin penetrates through the mounting block and is clamped in the mounting groove of the connecting block.

[0012] Further, a protective sheet metal is provided on the outer surface of the fixed block, and the lower end of the protective sheet metal extends to the outer surface of the blank holder, enclosing the gap between the mounting block and the blank holder into a semi-closed space. The provided protective sheet metal plays a protective role, preventing impurities from entering the gap between the mounting block and the blank holder, thereby avoiding damage and failure of the guiding connection member and the elastic member.

[0013] Further, a limit block for preventing the blank holder from pressing and damaging the workpiece is provided on the die base. By precisely limiting the downward stroke of the blank holder, the limit block ensures that the workpiece is not damaged due to exceeding the bearing limit while being subjected to sufficient pressure to complete the stamping operation. This design not only improves the accuracy and reliability of the stamping operation but also effectively protects the quality and integrity of the workpiece.

[0014] Further, the axis of the piston rod of the oil cylinder is collinear with the axis of the punch pin. This enables direct and accurate force transmission, reduces unnecessary lateral forces or torques, thereby reducing mechanical wear, and ensures that the punch pin contacts the workpiece along the same path and at the same angle each time, thus improving the repeatability of the operation and the consistency of product quality.

[0015] Further, there are two workbenches, and the two workbenches are symmetrically arranged with respect to the center line of the chassis. The two workbenches provide double the working space and are relatively independent, improving production efficiency. This makes the punching process more flexible and adaptable to different work processes and task requirements.

[0016] Further, the angle between the workbench and the upper end surface of the chassis is an acute angle.

[0017] Further, a waste box is provided on the upper end surface of the chassis. The waste box is arranged along the length direction of the chassis and corresponds to the lower edge of the workbench. This facilitates the collection of waste materials dropped by the workpiece during the punching process.

[0018] The advantages and technical effects of the present utility model: Due to the adoption of the above technical solutions, the punching method of overall punching is adopted, making the punching process have a fast beat and high efficiency. Moreover, the punching mechanism adopts standard units, and the vulnerable parts are easy to replace. The versatility greatly improves the speed of replacing spare parts.

[0019] The connection method adopted between the mounting block and the blank holder can effectively transmit the load, adapt to the relative displacement and deformation between components, reduce the impact force generated by rigid contact, thereby avoiding the situation of the decorative strip being pressed and damaged or deformed; the direct drive of the piston rod of the oil cylinder simplifies the corresponding mechanical structure, not only reducing the manufacturing cost but also lowering the difficulty and cost of maintenance and repair.

[0020] The die base is mounted on the fixed block by fasteners. This installation method not only ensures the stability and safety of the die base during the punching process, but also simplifies the replacement process. When the die base needs to be disassembled for cleaning, maintenance or replacement, just loosen the fasteners and the die base can be easily removed from the fixed block. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure provided by an embodiment of the utility model;

[0022] Figure 2 It is a three-dimensional diagram of the punching mechanism provided by the embodiment of the utility model;

[0023] Figure 3 It is a schematic diagram of the connection structure of the floating joint, the mounting block and the pressing block provided in the embodiment of the utility model;

[0024] Figure 4 yes Figure 3 Middle AA section view.

[0025] In the figure: 1. base frame; 2. work surface; 3. punching mechanism; 4. hydraulic station; 5. mounting seat; 6. oil cylinder; 7. mounting block; 8. pressing block; 9. fixing block; 10. guide connecting member; 11. die base; 12. punch sleeve; 13. unloading block; 14. linear guide assembly; 14-1. first slider; 14-2. second slider; 15. floating joint; 16. connecting block; 17. protective sheet metal; 18. limit block; 19. elastic member; 20. punch needle. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail in combination with the embodiments below. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.

[0027] It should be noted that the terms "upper", "lower", "left", "right", "top", "bottom", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0028] like Figures 1 to 4 As shown, the present application provides an automobile trim punching device, including a base frame 1, a work table 2 is arranged on the upper end surface of the base frame 1 along the length direction of the base frame 1, and a punching mechanism 3 matching the number and position of punching holes in the workpiece is arranged on the working surface of the work table 2 along the length direction of the workpiece.

[0029] The punching mechanism 3 includes a mounting base 5. An oil cylinder 6 is arranged on the mounting base 5, and the extending direction of the piston rod of the oil cylinder 6 is the same as the punching direction. Inside the mounting base 5, a mounting block 7, a blank holding block 8 and a fixing block 9 are arranged at intervals along the punching direction. The piston rod of the oil cylinder 6 penetrates through the mounting base 5 and is connected to the mounting block 7. A guiding connection member 10 is arranged inside the mounting block 7. The connection end of the guiding connection member 10 penetrates through the mounting block 7 and extends into the blank holding block 8. Specifically, the guiding connection member 10 is a guiding screw, and the connection end of the guiding connection member 10 is threadedly connected to the blank holding block 8. The upper end of the guiding connection member 10 is a free end. An elastic member 19 is sleeved on the guiding connection member 10 between the mounting block 7 and the blank holding block 8. Specifically, the elastic member 19 is a spring.

[0030] An ejector pin 20 is arranged inside the mounting block 7 along the punching direction. The punching end of the ejector pin 20 sequentially penetrates through the mounting block 7 and the blank holding block 8 and extends towards the fixing block 9. The fixing block can be installed on the mounting base 5 by bolts or screws. A die holder 11 is installed on the fixing block through fasteners. Specifically, the fasteners are bolts, screws or screws. A punch sleeve 12 that cooperates with the ejector pin 20 to perform the punching operation is arranged inside the die holder 11.

[0031] Preferably, a stroke sensor is arranged on the oil cylinder 6 to monitor whether the movement of the piston rod of the oil cylinder 6 is in place, so as to ensure that each punching is in place.

[0032] A hydraulic station 4 for providing power and controlling the action of the oil cylinder 6 is arranged on one side of the chassis 1.

[0033] Further, a blanking block 13 is arranged on the blank holding block 8 at the position where the ejector pin 20 penetrates.

[0034] Further, a linear guide rail assembly 14 is arranged inside the mounting base 5 along the movement direction of the piston rod of the oil cylinder 6. The linear guide rail assembly 14 includes a first slider 14-1 and a second slider 14-2 that are sequentially arranged on the guide rail in the punching direction. The mounting block 7 is arranged on the first slider 14-1, and the blank holding block 8 is arranged on the second slider 14-2. The arranged linear guide rail assembly 14 can provide stable support for the mounting block 7 and the blank holding block 8, ensure that the mounting block 7 and the blank holding block 8 will not shake or become unstable during movement, and provide precise linear movement for the mounting block 7 and the blank holding block 8 to achieve smooth movement.

[0035] Furthermore, a floating joint 15 is provided at the end of the piston rod of the oil cylinder 6. The floating joint 15 can absorb the eccentric load and lateral load generated by the eccentricity or non-parallel installation of the piston rod and the load on the piston rod, avoiding the bending damage of the piston rod caused by the non-parallel installation of the oil cylinder 6, increasing the service life of the oil cylinder 6. A connecting block 16 is provided at the upper end of the mounting block 7. A connecting groove is provided in the connecting block 16. The connecting end of the floating joint 15 is placed in the connecting groove. Specifically, the connecting groove is a T-shaped groove, and the nut at the connecting end of the floating joint 15 is placed in the large-diameter end of the T-shaped groove. The mounting end of the punch pin 20 passes through the mounting block 7 and is engaged in the mounting groove of the connecting block 16.

[0036] Furthermore, a protective sheet metal 17 is provided on the outer surface of the fixed block 9. The lower end of the protective sheet metal 17 extends to the outer surface of the blank holding block 8, enclosing the gap between the mounting block 7 and the blank holding block 8 into a semi-closed space. The provided protective sheet metal 17 plays a protective role, preventing impurities from entering the gap between the mounting block 7 and the blank holding block 8, thereby avoiding the damage and failure of the guiding and connecting member 10 and the elastic member 19.

[0037] Furthermore, a limit block 18 for preventing the blank holding block 8 from pressing and damaging the workpiece is provided on the die base 11. The limit block 18 accurately limits the downward stroke of the blank holding block 8, ensuring that the workpiece is not damaged due to exceeding the bearing limit while being subjected to sufficient pressure to complete the stamping operation. This design not only improves the accuracy and reliability of the stamping operation but also effectively protects the quality and integrity of the workpiece.

[0038] Furthermore, the axis of the piston rod of the oil cylinder 6 is collinear with the axis of the punch pin 20. It enables direct and accurate force transmission, reduces unnecessary lateral forces or torques, and further reduces mechanical wear, ensuring that the punch pin 20 contacts the workpiece along the same path and at the same angle each time, thereby improving the repeatability of the operation and the consistency of the product quality.

[0039] Furthermore, there are two worktables 2, and the two worktables 2 are symmetrically arranged with respect to the center line of the chassis 1. The two worktables 2 provide double the working space and are relatively independent, improving production efficiency. It makes the punching process more flexible and adaptable to different work processes and task requirements.

[0040] Furthermore, the angle between the worktable 2 and the upper end surface of the chassis 1 is an acute angle.

[0041] Furthermore, a waste box is provided on the upper end surface of the chassis 1. The waste box is arranged along the length direction of the chassis 1 and corresponds to the lower edge of the worktable 2. It is convenient to collect the waste materials dropped by the workpiece during the punching process.

[0042] Working process: The hydraulic station 4 controls the movement of the oil cylinder 6. The piston rod of the oil cylinder 6 pushes the mounting block 7 and the punching pin 20 to move towards the workpiece through the floating joint 15. Driven by the guiding connection member 10 and the elastic member 19, the blank holder 8 moves towards the workpiece and contacts the workpiece. After the blank holder 8 contacts the workpiece, it presses and positions the workpiece. The mounting block 7 and the punching pin 20 continue to punch downward. During the downward pressing process of the mounting block 7, the mounting block 7 moves along the guiding connection member 10 and the elastic member is compressed until the punching pin 20 cooperates with the bush 12 in the die base 11 to complete the punching operation.

[0043] Due to the adoption of the above technical solution, the punching and cutting method of integral punching is adopted, which makes the punching process have a fast beat and high efficiency. Moreover, the punching mechanism 3 adopts standard units, and the vulnerable parts are easy to replace. The versatility greatly improves the speed of replacing spare parts.

[0044] The connection method adopted between the mounting block 7 and the blank holder 8 can effectively transfer the load, adapt to the relative displacement and deformation between components, and reduce the impact force generated by rigid contact, thus avoiding the situation that the decorative strip is damaged or deformed; The direct drive of the piston rod of the oil cylinder 6 simplifies the corresponding mechanical structure, not only reducing the manufacturing cost, but also reducing the difficulty and cost of maintenance and repair.

[0045] The die base 11 is installed on the fixed block through fasteners. This installation method not only ensures the stability and safety of the die base 11 during the punching process, but also simplifies the replacement process. When it is necessary to disassemble the die base 11 for cleaning, repair or replacement, just loosen the fasteners, and the die base 11 can be easily removed from the fixed block.

[0046] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A punching device for automobile trim, characterized in that: It comprises a base frame, a work table is arranged on the upper end surface of the base frame along the length direction of the base frame, and a punching mechanism matching the number and position of punching holes in the workpiece is arranged on the working surface of the work table along the length direction of the workpiece; The punching mechanism includes a mounting seat, a cylinder is arranged on the mounting seat, the extension direction of the cylinder piston rod is the same as the punching direction, a mounting block, a pressing block and a fixed block are arranged at intervals in the mounting seat along the punching direction, the piston rod of the cylinder passes through the mounting seat and is connected to the mounting block, a guide connecting component is arranged in the mounting block, the connecting end of the guide connecting component passes through the mounting block and extends into the pressing block, an elastic component is sleeved on the guide connecting component between the mounting block and the pressing block; a punch needle is arranged in the mounting block along the punching direction, the punching end of the punch needle passes through the mounting block and the pressing block in sequence and extends in the direction of the fixed block, a die seat is installed on the fixed block through a fastener, and a punch sleeve is arranged in the die seat to cooperate with the punch needle to realize the punching operation; A hydraulic station for providing power and controlling the movement of the oil cylinder is arranged on one side of the chassis.

2. The automobile trim punching equipment according to claim 1, characterized in that: A discharge block is arranged on the pressing block at the position where the punch needle penetrates.

3. The automobile trim punching equipment according to claim 1 or 2, characterized in that: A linear guide assembly is arranged in the mounting seat along the movement direction of the cylinder piston rod. The linear guide assembly includes a first slider and a second slider arranged on the guide in sequence in the stamping direction. The mounting block is arranged on the first slider, and the pressing block is arranged on the second slider.

4. The automobile trim punching equipment according to claim 1, characterized in that: The piston rod end of the oil cylinder is provided with a floating joint, the upper end of the mounting block is provided with a connecting block, a connecting groove is provided in the connecting block, and the connecting end of the floating joint is placed in the connecting groove; The mounting end of the punching pin penetrates the mounting block and is engaged in the mounting groove of the connecting block.

5. The automobile trim punching equipment according to claim 1, characterized in that: The outer surface of the fixing block is provided with a protective sheet metal, and the lower end of the protective sheet metal extends to the outer surface of the pressing block, enclosing the gap between the mounting block and the pressing block into a semi-enclosed space.

6. The automobile trim punching equipment according to claim 1, characterized in that: The die base is provided with a limiting block for preventing the pressing block from crushing the workpiece.

7. The automobile trim punching equipment according to claim 1, characterized in that: The axis of the oil cylinder piston rod is colinearly arranged with the axis of the punch needle.

8. The automobile trim punching equipment according to claim 1, characterized in that: There are two working tables, which are symmetrically arranged relative to the center line of the base frame.

9. The automobile trim punching equipment according to claim 1, characterized in that: The angle between the working table and the upper end surface of the base frame is an acute angle.

10. The automobile trim punching equipment according to claim 1, characterized in that: The upper end surface of the base frame is provided with a waste box, which is arranged along the length direction of the base frame and corresponds to the lower edge of the work table.

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