Automobile decoration strip punching mechanism

Abstract

The utility model discloses an automobile decorative strip punching mechanism, which belongs to the technical field of automobile accessory processing and 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 along the punching direction, a piston rod of the oil cylinder penetrates through the mounting seat and is connected with the mounting block, and a guide connecting component is arranged in the mounting block. The connecting end of the guide connecting component penetrates through the mounting block and extends into the material pressing block, and the guide connecting component between the mounting block and the material pressing block is sleeved with an elastic component; a punching needle is arranged in the mounting block in the punching direction, the punching end of the punching needle sequentially penetrates through the mounting block and the pressing block and extends towards the fixing block, a die holder is mounted on the fixing seat through a fastener, and a punching sleeve matched with the punching needle to achieve punching operation is arranged in the die holder. According to the utility model, load can be effectively transmitted, relative displacement deformation between components is adapted, and impact force generated by rigid contact is reduced, so that the situation that the decorative strip is crushed or deformed is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile parts processing, and in particular relates to a punching mechanism for automobile trim strips. Background Art

[0002] In the process of producing automotive trims, the punching process is an indispensable part, which plays a vital role in the quality and performance of the trims. In order to meet this demand, the punching device commonly used is mainly composed of two parts: a fixed table and a punching mechanism. The fixed table is responsible for stably carrying and fixing the automotive trim to be punched, ensuring that it will not deviate or shake during the punching process, thereby ensuring the accuracy and consistency of the punching. The punching mechanism is the core execution part of the entire device. It accurately punches the required holes on the trim according to the preset punching parameters and positions through the synergy of the punch needle and the punch sleeve.

[0003] The prior art discloses a punching device for automobile trim strips, with publication number CN214871095U. The prior art includes a punching assembly. When the punching assembly is working, the hydraulic cylinder drives the two hydraulic rods at the bottom to descend, so that the punching head at the bottom of the No. 1 stamping plate passes through the No. 2 stamping plate to punch the trim strips in the clamping block. The above-mentioned prior art solution has the following defects: 1. The problem of crushing caused by rigid connection. When the punching head passes through the No. 2 stamping plate to punch, the No. 1 stamping plate and the No. 2 stamping plate may come into rigid contact and generate a large impact force, causing the trim strips to be crushed or deformed; 2. The structure of the hydraulic cylinder and the two hydraulic rods increases the complexity of the system, and also increases the cost of maintenance and servicing.

[0004] In addition, in actual operation, due to various factors such as the structural design, installation method or tightness of the punching needle and the punching sleeve, the replacement process is often not smooth. This not only affects the normal production rhythm and increases unnecessary downtime, but may also cause product quality problems due to improper replacement, such as hole position offset and inconsistent hole size. Therefore, as key components directly involved in the punching operation, the convenience of replacing the punching needle and the punching sleeve is crucial to improving the efficiency of the punching process of automotive trims and product quality. Summary of the invention

[0005] In view of the problems existing in the prior art, the utility model provides a punching mechanism for automobile trim strips, which can effectively transfer loads, adapt to the relative displacement deformation between components, reduce the impact force generated by rigid contact, and thus avoid the trim strips from being crushed or deformed; it adopts direct drive by the cylinder piston rod, simplifies the corresponding mechanical structure, and not only reduces the manufacturing cost, but also reduces the difficulty and cost of maintenance.

[0006] The utility model is implemented as follows: a punching mechanism for automobile trim strips comprises a mounting seat, a cylinder is arranged on the mounting seat, the extension direction of the cylinder piston rod is the same as the stamping direction, a mounting block, a pressing block and a fixed block are arranged at intervals in the mounting seat along the stamping direction, the piston rod of the cylinder penetrates the mounting seat and is connected to the mounting block, a guiding connection member is arranged in the mounting block, the connecting end of the guiding connection member penetrates the mounting block and extends into the pressing block, an elastic member is sleeved on the guiding connection member between the mounting block and the pressing block; a punch needle is arranged in the mounting block along the stamping direction, the stamping end of the punch needle sequentially penetrates the mounting block and the pressing block and extends in the direction of the fixed block, a die base is installed on the fixed block through a fastener, and a punch sleeve cooperating with the punch needle to realize the punching operation is arranged in the die base.

[0007] Furthermore, a discharge block is provided on the pressing block at the position where the punch needle penetrates.

[0008] Furthermore, a linear guide assembly is arranged in the mounting seat along the movement direction of the oil cylinder piston rod, and the linear guide assembly includes a first slider and a second slider arranged on the guide rail in the stamping direction, the mounting block is arranged on the first slider, and the pressing block is arranged on the second slider. The linear guide assembly can provide stable support for the mounting block and the pressing block, ensuring that the mounting block and the pressing block will not shake or become unstable when moving, and provide precise linear motion for the mounting block and the pressing block to achieve smooth motion.

[0009] Furthermore, a floating joint is provided at the end of the piston rod of the oil cylinder. The floating joint can absorb the eccentricity of the piston rod and the load or the eccentric load and lateral load on the piston rod caused by the non-parallel installation, thereby avoiding bending and damage of the piston rod caused by the non-parallel installation of the oil cylinder and increasing the service life of the oil cylinder. A connecting block is provided at the upper end of the mounting block, and a connecting groove is provided in the connecting block. The connecting end of the floating joint is placed in the connecting groove; the mounting end of the punch needle passes through the mounting block and is engaged in the mounting groove of the connecting block.

[0010] Furthermore, a protective sheet metal is provided on the outer surface of the fixing block, 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. The protective sheet metal provided plays a protective role, preventing impurities from entering the gap between the mounting block and the pressing block, thereby preventing the guide connection component and the elastic component from being damaged and failing.

[0011] Furthermore, the die base is provided with a stopper block for preventing the pressing block from crushing the workpiece. The stopper block accurately limits the downward pressing stroke of the pressing block, 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.

[0012] Furthermore, the axis of the oil cylinder piston rod is arranged in a colinear manner with the axis of the punch needle, which can directly and accurately transmit force, reduce unnecessary lateral force or torque, and thus reduce mechanical wear, ensuring that the punch needle contacts the workpiece at the same path and angle each time, thereby improving the repeatability of the operation and the consistency of product quality.

[0013] The utility model has the following advantages and technical effects: due to the adoption of the above technical scheme, the connection method adopted between the mounting block and the pressing block can effectively transfer the load, adapt to the relative displacement deformation between the components, reduce the impact force generated by the rigid contact, and thus avoid the decorative strip from being crushed or deformed; the oil cylinder piston rod is used for direct drive, which simplifies the corresponding mechanical structure, not only reduces the manufacturing cost, but also reduces the difficulty and cost of maintenance.

[0014] 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

[0015] Figure 1 It is a three-dimensional diagram of the overall structure provided by the embodiment of the utility model;

[0016] Figure 2 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;

[0017] Figure 3 yes Figure 2 Middle AA section view.

[0018] In the figure: 1. mounting seat; 2. oil cylinder; 3. mounting block; 4. pressing block; 5. fixing block; 6. guide connecting member; 7. die base; 8. punch sleeve; 9. unloading block; 10. linear guide rail assembly; 10-1. first slider; 10-2. second slider; 11. floating joint; 12. connecting block; 13. protective sheet metal; 14. limit block; 15. elastic member; 16. punch needle. DETAILED DESCRIPTION

[0019] 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.

[0020] 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.

[0021] like Figures 1 to 3 As shown, the present application provides a punching mechanism for automobile trim strips, including a mounting seat 1, on which a cylinder 2 is arranged, the extension direction of the piston rod of the cylinder 2 is the same as the stamping direction, a mounting block 3, a pressing block 4 and a fixing block 5 are arranged in the mounting seat 1 along the stamping direction, the piston rod of the cylinder 2 passes through the mounting seat 1 and is connected to the mounting block 3, a guiding connection member 6 is arranged in the mounting block 3, the connecting end of the guiding connection member 6 passes through the mounting block 3 and extends into the pressing block 4, specifically, the guiding connection member 6 is a guiding screw, the connecting end of the guiding connection member 6 is threadedly connected to the pressing block 4, the upper end of the guiding connection member 6 is a free end, and an elastic member 15 is sleeved on the guiding connection member 6 between the mounting block 3 and the pressing block 4, specifically, the elastic member 15 is a spring.

[0022] A punching needle 16 is arranged in the mounting block 3 along the punching direction, and the punching end of the punching needle 16 passes through the mounting block 3 and the pressure block 4 in sequence and extends toward the fixed block 5. The fixed block can be installed on the mounting seat 1 by bolts or screws, and a die base 7 is installed on the fixed block by fasteners. Specifically, the fasteners are bolts, screws or screws. A punching sleeve 8 is arranged in the die base 7 to cooperate with the punching needle 16 to realize the punching operation.

[0023] Preferably, a stroke sensor is provided on the oil cylinder 2 to monitor whether the piston rod of the oil cylinder 2 moves into place, thereby ensuring that each punching is in place.

[0024] Furthermore, a discharge block 9 is provided on the pressing block 4 at the position where the punching needle 16 penetrates.

[0025] Furthermore, a linear guide assembly 10 is arranged in the mounting seat 1 along the movement direction of the piston rod of the oil cylinder 2, and the linear guide assembly 10 includes a first slider 10-1 and a second slider 10-2 arranged on the guide rail in the stamping direction, the mounting block 3 is arranged on the first slider 10-1, and the pressing block 4 is arranged on the second slider 10-2. The linear guide assembly 10 can provide stable support for the mounting block 3 and the pressing block 4, ensuring that the mounting block 3 and the pressing block 4 will not shake or become unstable when moving, and provide precise linear motion for the mounting block 3 and the pressing block 4 to achieve smooth motion.

[0026] Furthermore, a floating joint 11 is provided at the end of the piston rod of the oil cylinder 2. The floating joint 11 can absorb the eccentricity of the piston rod and the load or the eccentric load and lateral load on the piston rod caused by the non-parallel installation, so as to avoid the bending and damage of the piston rod caused by the non-parallel installation of the oil cylinder 2, and increase the service life of the oil cylinder 2. A connecting block 12 is provided at the upper end of the mounting block 3. A connecting groove is provided in the connecting block 12. The connecting end of the floating joint 11 is placed in the connecting groove. Specifically, the connecting groove is a T-slot, and the nut of the connecting end of the floating joint 11 is placed in the large diameter end of the T-slot. The mounting end of the punch 16 passes through the mounting block 3 and is engaged in the mounting groove of the connecting block 12.

[0027] Furthermore, a protective sheet metal 13 is provided on the outer surface of the fixing block 5, and the lower end of the protective sheet metal 13 extends to the outer surface of the pressing block 4, enclosing the gap between the mounting block 3 and the pressing block 4 into a semi-enclosed space. The protective sheet metal 13 plays a protective role, preventing impurities from entering the gap between the mounting block 3 and the pressing block 4, thereby preventing the guide connection member 6 and the elastic member 15 from being damaged and failing.

[0028] Furthermore, a stopper 14 is provided on the die base 7 to prevent the pressing block 4 from crushing the workpiece. The stopper 14 accurately limits the downward stroke of the pressing block 4, 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.

[0029] Furthermore, the axis of the piston rod of the oil cylinder 2 is arranged colinearly with the axis of the punch needle 16. Direct and accurate force transmission can be achieved, unnecessary lateral force or torque can be reduced, and mechanical wear can be reduced, ensuring that the punch needle 16 contacts the workpiece at the same path and angle each time, thereby improving the repeatability of the operation and the consistency of product quality.

[0030] Working process: the cylinder 2 is actuated, and the piston rod of the cylinder 2 pushes the mounting block 3 and the punch needle 16 toward the workpiece through the floating joint 11. Driven by the guide connecting member 6 and the elastic member 15, the pressing block 4 moves toward the workpiece and contacts the workpiece. After the pressing block 4 contacts the workpiece, it presses and limits the workpiece. The mounting block 3 and the punch needle 16 continue to punch downward. During the downward pressing process of the mounting block 3, the mounting block 3 moves along the guide connecting member 6 and the elastic member is compressed until the punch needle 16 cooperates with the punch sleeve 8 in the die base 7 to realize the punching operation.

[0031] Due to the adoption of the above technical solution, the connection method adopted between the mounting block 3 and the pressing block 4 can effectively transfer the load, adapt to the relative displacement deformation between the components, reduce the impact force generated by the rigid contact, and thus avoid the decorative strip from being crushed or deformed; the direct drive by the piston rod of the oil cylinder 2 simplifies the corresponding mechanical structure, which not only reduces the manufacturing cost, but also reduces the difficulty and cost of maintenance.

[0032] The die base 7 is mounted on the fixed block by fasteners. This mounting method not only ensures the stability and safety of the die base 7 during the punching process, but also simplifies the replacement process. When the die base 7 needs to be disassembled for cleaning, maintenance or replacement, the die base 7 can be easily removed from the fixed block by simply loosening the fasteners.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A punching mechanism for automobile trim strips, comprising a mounting seat, on which a cylinder is arranged, and the extension direction of the cylinder piston rod is the same as the punching direction, characterized in that: The mounting seat is provided with a mounting block, a pressing block and a fixing block at intervals along the stamping direction, the piston rod of the oil cylinder penetrates the mounting seat and is connected to the mounting block, a guide connecting member is provided in the mounting block, the connecting end of the guide connecting member penetrates the mounting block and extends into the pressing block, and an elastic member is sleeved on the guide connecting member between the mounting block and the pressing block; A punching needle is arranged in the mounting block along the punching direction, and the punching end of the punching needle passes through the mounting block and the pressing block in sequence and extends toward the fixed block. A die base is installed on the fixed block through a fastener, and a punching sleeve is arranged in the die base to cooperate with the punching needle to realize the punching operation.

2. The automobile trim punching mechanism 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 mechanism 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 mechanism 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 mechanism 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 mechanism 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 mechanism 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.

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