A door lock buckle riveting die

Abstract

This utility model relates to the field of car door lock riveting technology, and in particular to a car door lock riveting mold. It includes: a lower mold assembly, an upper mold assembly, a linkage assembly, and a reset assembly. The lower mold assembly has an openable material holder for placing the U-shaped part and the mounting plate. The mounting plate engages with a limiting post through mounting holes to prevent displacement. The upper mold assembly has a pressure head for upsetting both ends of the U-shaped part. The linkage assembly includes hinged first and second rods and a pressing component. When the upper mold moves downward, the pressing component pushes the rods to close the material holder and clamp the workpiece. When moving upward, the reset assembly drives the rods to reset, and the material holder opens for easy removal of the workpiece. The elastic element is vertically positioned to ensure smooth operation of the linkage assembly, and the limiting protrusion prevents it from stopping at a dead point. Overall, this improves riveting efficiency and stability, and reduces maintenance costs.

Description

Technical Field

[0001] This utility model relates to the field of car door lock riveting technology, and in particular to a car door lock riveting mold. Background Technology

[0002] The door latch is a core safety component connecting the car door to the vehicle body; its connection strength and assembly precision directly affect the door's closing reliability and driving safety. For example... Figure 1 As shown, its structure typically includes a U-shaped part 11 and a mounting plate 12, which are reliably connected by a riveting process. During riveting, the two ends of the U-shaped part need to be upset and deformed to make it fit tightly with the mounting plate, thereby ensuring the locking strength and impact resistance when the door is closed.

[0003] However, the riveting quality of car door latches requires extremely high precision in the relative position of the U-shaped part and the mounting plate, as well as stability in the riveting process. Traditional processing methods, due to problems such as inaccurate positioning, cumbersome operation, and low efficiency, cannot meet the production requirements of high precision and high consistency. Therefore, there is an urgent need for a car door latch riveting mold to solve the above problems. Utility Model Content

[0004] To overcome the shortcomings of the prior art, this utility model provides a door lock buckle riveting mold, which solves the technical problems of low production efficiency and difficulty in ensuring consistency of door lock buckles due to inaccurate positioning accuracy and cumbersome operation of the U-shaped part and mounting plate of the door lock buckle in the prior art.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: A door latch riveting mold is used to rivet the U-shaped part of a door latch onto a mounting plate, wherein the mounting plate has a pair of mounting holes, including: The lower mold assembly includes: a pair of material seats that are openable and closable in the X direction, the material seats being used to place the U-shaped part to be riveted and the mounting plate; An upper die assembly is located above the lower die assembly. The upper die assembly has a pressure head on the side near the lower die assembly that corresponds to the two ends of the U-shaped part. The pressure head is used to upset the two ends of the U-shaped part. A pair of linkage components are spaced apart on the lower mold assembly in the X direction, and a pair of material seats are located between the pair of linkage components. Each linkage component includes: a first rod, a second rod, and a pressing component. The first rod and the second rod are pivotally connected. The end of the first rod away from the second rod is hinged to the corresponding material seat. The end of the second rod away from the first rod is hinged to the lower mold assembly. The pressing component is installed on the side of the upper mold assembly near the lower mold assembly. The end of the pressing component away from the upper mold assembly slides against the pivot connection of the first rod and the second rod. A reset assembly is provided on the side of the lower mold assembly near the upper mold assembly, and the reset assembly is used to reset the first rod and the second rod.

[0006] Based on the above structure, the principle of the door lock buckle riveting mold is as follows: When needed, firstly, the U-shaped part to be riveted and the mounting plate are assembled into place; then, the drive device (not shown) drives the upper mold assembly to move away from the lower mold assembly. During this process, a pair of linkage components drive a pair of material seats to separate in the X direction, placing the U-shaped part to be riveted and the mounting plate on the material seats, so that the U-shaped part is located between the pair of material seats, and the mounting plate is located at the upper end of the pair of material seats. The pair of material seats provide positioning for riveting, ensuring that the relative position of the U-shaped part and the mounting plate is stable during the riveting process; afterward, the drive device is started again, causing the upper mold assembly to move closer to the lower mold assembly. During this process, the pressing component presses down, pressing against the pivot connection between the first rod and the second rod. As the component continues to be pushed downwards, the first and second rods rotate around their respective hinge points, thereby causing a pair of material seats to close on the X side, clamping the U-shaped part. The mounting plate is located on the pair of material seats, and the pressure head is aligned with the two ends of the U-shaped part. As the upper mold assembly continues to move downwards, pressure is applied to the two ends of the U-shaped part through the pressure head, causing it to undergo plastic deformation and be riveted together with the mounting plate. The linkage assembly, through the mutual cooperation of the first rod, the second rod, and the pressing component, realizes the function of driving the material seats to close when the upper mold assembly moves downwards. After riveting is completed, the upper mold assembly moves upwards, and the reset assembly is used to reset the first and second rods. The first and second rods work together to drive the pair of material seats to open synchronously on the X side, and the riveted door latch product is taken out from the pair of material seats, completing one processing cycle.

[0007] Furthermore, in a door latch riveting mold of this application, the material holder is provided with a receiving cavity adapted to the U-shaped portion, the receiving cavity being used to accommodate the U-shaped portion. As a preferred embodiment of this application, the receiving cavity of the door latch riveting mold of this application can form a fitted reception of the U-shaped portion, restricting the displacement of the U-shaped portion from multiple directions, ensuring that the U-shaped portion is in a preset riveting position in a pair of material holders, and preventing it from shifting during placement or riveting.

[0008] Furthermore, in a door lock snap-fitting mold of this application, the upper mold assembly further includes: an upper mold base and a pressure head mounting base. The pressure head mounting base is detachably mounted on the side of the upper mold base near the lower mold assembly. The pressure head is detachably mounted on the pressure head mounting base. The pressure head mounting base is provided with a pair of limiting posts, and the pair of limiting posts corresponds one-to-one with a pair of mounting holes. As a preferred embodiment of this application, the door lock snap-fitting mold of this application has a detachable structure that allows both the pressure head and the pressure head mounting base to be replaced separately, facilitating the replacement of worn pressure heads or upper mold bases, reducing maintenance costs, and lowering manufacturing and usage costs. The limiting posts and mounting holes work together; during riveting, a pair of limiting posts are inserted into a pair of mounting holes respectively, limiting the displacement of the mounting plate in the horizontal direction, preventing the mounting plate from shifting during riveting, and reducing the product scrap rate due to positioning errors.

[0009] Furthermore, in a door lock riveting mold of this application, the lower mold assembly further includes: a lower mold base, a pair of material seats slidably mounted on the lower mold base in the X direction, and the reset assembly includes: a pressure block and an elastic element, the pressure block is sleeved on the pivot of the first rod and the second rod, the elastic element is mounted on the lower mold base, and the end of the pressure block near the lower mold base slidably abuts against the elastic element. As a preferred embodiment of this application, a door lock buckle riveting mold is provided. When the upper mold assembly moves towards the lower mold assembly, the pressing component moves downward and gradually presses against the pivot connection between the first and second rods. As the upper mold assembly continues to descend, the pressure of the pressing component on the pivot connection between the first and second rods increases, pushing the first and second rods to rotate around their respective hinge points. During this process, the pressure block sleeved on the pivot of the first and second rods is driven to move towards the lower mold base, compressing the elastic element and causing it to undergo elastic deformation, storing elastic potential energy. At this time, the reset component is in a stored state, preparing for the subsequent reset action. After riveting is completed, the upper mold assembly moves away from the lower mold assembly, and the pressing component moves upward. Its pressure on the pivot connection between the first and second rods gradually decreases until it disappears. At this time, the compressed elastic element releases the stored elastic potential energy, pushing the pressure block upward. The pressure block drives the first and second rods to rotate in opposite directions around their respective hinge points, thereby driving a pair of material seats to be simultaneously pressed in the X direction. The vertically arranged elastic element on the lower mold base ensures the opening and closing space between a pair of material seats. If the elastic element were arranged horizontally, it would occupy the horizontal space, limiting the opening and closing range of the material seats or increasing the overall horizontal dimension of the mold. However, the vertically arranged elastic element, along the vertical direction, can utilize the longitudinal space between the lower mold base and the pivot connection, avoiding spatial conflicts with the horizontal movement of the material seats, which is conducive to the compact design of the structure. Furthermore, when the elastic element is vertically arranged, its force on the pressure block is always vertical, which can continuously... A stable force is applied to the pivot connection between the first and second rods. During the downward movement of the upper mold assembly, this force assists the pressing component in smoothly rotating the first and second rods, preventing them from jamming when they are close to collinear due to force direction deviation. When the upper mold assembly moves upward and resets, the vertical elastic force drives the first and second rods to rotate in the opposite direction, preventing them from staying at a dead point due to force direction deviation, ensuring the continuity of the linkage assembly's movement, and guaranteeing the smoothness of the cyclic operation.

[0010] Furthermore, in a door lock snap-fitting mold of this application, the elastic element is fitted with a protective sleeve, which is mounted on a lower mold base. The pressure block has a protrusion on the side near the lower mold base, extending into the protective sleeve. As a preferred embodiment of this application, in a door lock snap-fitting mold, the protective sleeve restricts the radial displacement of the elastic element, acting as a guide during compression and resetting to prevent radial displacement and resetting failure, thus enhancing the overall stability of the resetting assembly. The protrusion extends into the protective sleeve, forming a cooperative relationship. When the elastic element drives the pressure block, the protective sleeve guides the protrusion, restricting the horizontal movement trajectory of the pressure block and ensuring stable horizontal movement. This prevents the pressure block from skewing under force, ensuring the rotation of the first and second rods, and consequently ensuring the accuracy of the opening and closing action of the pair of material seats.

[0011] Furthermore, in a door latch riveting mold of this application, a set of limiting parts is provided on the side of the lower mold base near the upper mold assembly, and the set of limiting parts is spaced apart along the circumference of the lower mold base. As a preferred embodiment of this application, in a door latch riveting mold of this application, the set of limiting parts is used to limit the maximum stroke distance of the upper mold assembly during the closing process of the lower mold assembly and the upper mold assembly, so as to avoid the upper mold assembly from being excessively pressed down, causing the pressure head, material seat or linkage assembly to deform or wear due to overload, thereby reducing the mold failure rate.

[0012] Furthermore, in a door lock riveting mold of this application, the first rod portion is provided with a first limiting protrusion on the side near the pressure block, and the lower mold base is provided with a pair of U-shaped seats. The pair of U-shaped seats are respectively arranged with a pair of second rod portions. The second rod portions are hinged to the corresponding U-shaped seats. The inner walls on both sides of the U-shaped seats are provided with second limiting protrusions. When the linkage assembly is reset to the point where the pair of material seats are fully opened, the side wall of the pressure block abuts against the first limiting protrusion in the X direction, and the upper end of the second rod portion abuts against the second limiting protrusion. As a preferred embodiment of this application, a door lock buckle riveting mold of this application has a first limiting protrusion and a pressing block in contact, and a second limiting protrusion and a second rod in contact, which limit the reset endpoint position of the linkage component, ensuring that a pair of material seats can be fully opened to the preset maximum opening when reset. The synergistic effect of the two prevents the linkage component from exceeding the design stroke due to reset inertia or excessive elastic force of the elastic element, prevents it from deviating from the preset motion trajectory due to force deviation, reduces force transmission loss or action jamming caused by component shaking, and ensures the reliability of continuous operation.

[0013] Furthermore, a door lock snapping mold in this application further includes: a pair of material loading components, the pair of material loading components being spaced apart on a lower mold base in the Y direction, a pair of material seats being located between the pair of material loading components, the material loading component including: a material loading part, the material loading part being provided with a through groove extending in the Y direction, the through groove being disposed opposite to the pair of material seats, the through groove being used to accommodate a U-shaped part. As a preferred embodiment of this application, a door lock buckle riveting mold is provided. A pair of material-carrying components are used for loading and unloading the door lock buckle. In use, the operator places the U-shaped part to be riveted and the mounting plate on the material-carrying component at the loading end. At this time, the U-shaped part is located in the through groove at the loading end, and the mounting plate is located at the upper end of the material-carrying part. Then, the U-shaped part and the mounting plate are pushed together along the extension direction of the through groove to the space between a pair of material seats. Subsequently, the upper mold component moves down, and the linkage component drives the pair of material seats to close and clamp the U-shaped part in the X direction. After riveting is completed, the pair of material seats open, and the operator pushes the riveted door lock buckle along the Y direction to the material-carrying part at the unloading end. The door lock buckle can be removed along the extension direction of the through groove on the material-carrying part at the unloading end. The through groove is used to constrain the U-shaped part in the X direction to prevent it from shifting during loading and unloading, and to guide the U-shaped part to accurately enter or leave the space between a pair of material seats.

[0014] Furthermore, a door lock buckle riveting mold in this application further includes: a material transfer component, which is used to sequentially transfer the door lock buckle between the loading end material carrier, the material seat, and the unloading end material carrier. The material transfer component includes: a pair of clamping parts, which are closable and mounted on the upper end of the loading end material carrier. The pair of clamping parts are adjustable in the Y direction and extend to the upper end of the pair of material seats in the Y direction. Each clamping part is provided with a set of jaws, which are spaced apart along the axial direction of the clamping part. A pair of adjacent jaws in the X direction are used to clamp the mounting plate. As a preferred embodiment of this application, a door lock riveting mold includes a material transfer component that transfers the U-shaped part and mounting plate to be riveted from the loading section at the loading end to a pair of material seats, and then transfers the riveted U-shaped part and mounting plate from the pair of material seats to the loading section at the unloading end. First, the operator places the U-shaped part and mounting plate to be riveted on the loading section at the loading end. The U-shaped part is located within a through groove, and the mounting plate is located at the upper end of the loading section. The through groove extends in the Y direction, constraining the horizontal displacement of the U-shaped part and ensuring that its axis is consistent with the material transfer path. Then, the mounting plate is gripped by a pair of adjacent jaws in the X direction on a pair of clamping parts. After gripping, the pair of clamping parts moves in the Y direction, causing the jaws gripping the mounting plate to move from the loading section at the loading end to the material seats. When the U-shaped part and mounting plate to be riveted move to a preset position on the material seats, the pair of clamping parts... The upper die assembly opens, and a pair of material seats close, allowing the U-shaped part to enter the receiving cavity. The mounting plate is located at the upper end of the material seat. After riveting, the upper die assembly rises, and a pair of material seats open. At this time, a pair of clamping parts close, and the jaws located at the material seats clamp the door lock on the material seats. At the same time, the jaws located on the loading and unloading parts clamp the U-shaped part to be riveted and the mounting plate. Then, the pair of clamping parts are pushed to move a preset distance along the Y direction. The jaws originally located at the material seats move the riveted U-shaped part and the mounting plate to the loading part at the unloading end. The jaws originally located on the loading part at the loading end move the U-shaped part to be riveted and the mounting plate to the material seat. At this time, the pair of clamping parts open in the X direction. The riveted U-shaped part and the mounting plate, and the U-shaped part and the mounting plate to be riveted are respectively placed on the loading part and the material seat at the unloading end. The material transfer parts are reset, waiting for the next loading and unloading cycle.

[0015] As can be seen from the above technical solution, this utility model has the following beneficial effects: The purpose of this utility model is to provide a door lock buckle riveting mold. It uses an openable material holder with a receiving cavity to precisely position the U-shaped part. The displacement of the mounting plate is limited by the cooperation of the limiting post and the mounting hole. A linkage component enables the material holder to automatically close and clamp the workpiece when the upper mold moves downwards, and automatically open and remove the workpiece when it moves upwards. A detachable pressure head and pressure head mounting base reduce maintenance costs. The addition of a material loading component and a material transfer component enables automated loading and unloading. Simultaneously, a reset component, limiting parts, and various limiting protrusions ensure stable and reliable mold operation. By vertically setting the elastic element, it ensures that the linkage component rotates smoothly near the dead point during the operation of the upper mold component, avoiding jamming. The limiting protrusions prevent the linkage component from stopping at the dead point position, ensuring continuous motion. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural schematic diagram of a door lock buckle corresponding to a door lock buckle riveting mold in an embodiment of this application; Figure 2 This is a three-dimensional structural schematic diagram of a door lock buckle riveting mold according to an embodiment of this application; Figure 3 This is a bottom view of the upper mold assembly in a door lock snapping mold according to an embodiment of this application; Figure 4 This is a three-dimensional structural diagram of the lower mold assembly in a door lock snapping mold according to an embodiment of this application; Figure 5 This is an internal structural diagram of the lower mold assembly in a door lock snapping mold according to an embodiment of this application; Figure 6 This is an internal structural diagram of the linkage component in a door lock riveting mold according to an embodiment of this application.

[0017] In the diagram: 11-U-shaped part; 12-Mounting plate; 120-Mounting hole; 2-Lower mold assembly; 21-Material seat; 210-Receiving cavity; 22-Lower mold base; 23-Limiting part; 23-Limiting part; 24-U-shaped seat; 241-Second limiting protrusion; 3-Upper mold assembly; 31-Pressure head; 32-Upper mold base; 33-Pressure head mounting seat; 34-Limiting post; 4-Linkage assembly; 41-First rod part; 411-First limiting protrusion; 42-Second rod part; 43-Pressing component; 5-Reset assembly; 51-Pressure block; 511-Protrusion; 52-Elastic element; 53-Sheath; 6-Material loading assembly; 60-Through groove; 61-Material loading part; 7-Material transfer component; 71-Clamping part; 711-Claw; 72-Base; 73-Mounting bracket; 74-Slide rail. Detailed Implementation

[0018] like Figure 2 , 3As shown in Figure 4, a door lock buckle riveting mold is used to rivet the U-shaped portion 11 of the door lock buckle onto the mounting plate 12. The mounting plate 12 has a pair of mounting holes 120, including: The lower mold assembly 2 includes: a pair of material seats 21 that are openable and closable in the X direction, the material seats 21 being used to place the U-shaped part 11 to be riveted and the mounting plate 12; The upper mold assembly 3 is located at the upper end of the lower mold assembly 2. The upper mold assembly 3 is provided with a pressure head 31 on the side near the lower mold assembly 2, which corresponds to the two ends of the U-shaped part 11. The pressure head 31 is used to upset the two ends of the U-shaped part 11. A pair of linkage components 4 are spaced apart on the lower mold assembly 2 in the X direction. A pair of material seats 21 are located between the pair of linkage components 4. Each linkage component 4 includes: a first rod 41, a second rod 42, and a pressing component 43. The first rod 41 and the second rod 42 are pivotally connected. The end of the first rod 41 away from the second rod 42 is hinged to the corresponding material seat 21. The end of the second rod 42 away from the first rod 41 is hinged to the lower mold assembly 2. The pressing component 43 is installed on the side of the upper mold assembly 3 near the lower mold assembly 2. The end of the pressing component 43 away from the upper mold assembly 3 slides against the pivot connection of the first rod 41 and the second rod 42. The reset component 5 is located on the side of the lower mold component 2 near the upper mold component 3, and is used to reset the first rod part 41 and the second rod part 42.

[0019] Based on the above structure, the principle of the door lock buckle riveting mold is as follows: When the door lock buckle riveting mold of this application is needed, firstly, the U-shaped part 11 to be riveted and the mounting plate 12 are assembled into place; then, the driving device (not shown) drives the upper mold assembly 3 to move away from the lower mold assembly 2. During this process, a pair of linkage components 4 drive a pair of material seats 21 to separate in the X direction, placing the U-shaped part 11 to be riveted and the mounting plate 12 on the material seats 21, so that the U-shaped part 11 is located between the pair of material seats 21, and the mounting plate 12 is located at the upper end of the pair of material seats 21. The pair of material seats 21 provide positioning for riveting, ensuring that the relative position of the U-shaped part 11 and the mounting plate 12 is stable during the riveting process; after that, the driving device is started again, so that the upper mold assembly 3 moves closer to the lower mold assembly 2. During this process, the pressing component 43 presses down, pressing against the pivot connection between the first rod part 41 and the second rod part 42. As component 43 continues to push downwards, the first rod 41 and the second rod 42 rotate around their respective hinge points, thereby causing a pair of material seats 21 to close on the X side, clamping the U-shaped part 11. The mounting plate 12 is located on the pair of material seats 21, and the pressure head 31 is aligned with both ends of the U-shaped part 11. As the upper mold assembly 3 continues to move downwards, pressure is applied to both ends of the U-shaped part 11 through the pressure head 31, causing it to undergo plastic deformation and be riveted together with the mounting plate 12. The linkage assembly 4, through the mutual cooperation of the first rod 41, the second rod 42, and the pressing component 43, realizes the function of driving the material seats 21 to close when the upper mold assembly 3 moves downwards. After riveting is completed, the upper mold assembly 3 moves upwards, and the reset assembly 5 is used to reset the first rod 41 and the second rod 42. The first rod 41 and the second rod 42 work together to drive the pair of material seats 21 to open synchronously on the X side, and the riveted door latch finished product is taken out from the pair of material seats 21, completing one processing cycle. The pressing component 43 uses a nitrogen spring. In the initial downward movement of the upper mold assembly 3, the nitrogen spring is in a pre-tensioned state. As the upper mold assembly 3 moves downward, it pushes the pressing component 43 to contact the pivot connection between the first rod 41 and the second rod 42. At this time, the movable end of the nitrogen spring retracts, driving the first rod 41 and the second rod 42 in tandem, causing a pair of material seats 21 to close smoothly in the X direction. After the pair of material seats 21 are fully closed and clamp the U-shaped part 11, the upper mold assembly 3 continues to move downward. At this time, the nitrogen spring enters its compression stroke, and the downward pressure of the drive device directly acts on the U-shaped part 11. At both ends, a stable impact force can be provided to the pressure head 31 during the stamping stage, ensuring that the two ends of the U-shaped part 11 are uniformly upset and deformed to complete the riveting. The elastic characteristics of the nitrogen spring make the "retraction clamping" and "stamping" stages form a continuous action. During the clamping stage, the flexible force of the nitrogen spring is used to ensure that the U-shaped part 11 is reliably positioned. During the stamping stage, the rigid force of the nitrogen spring is used to ensure the deformation accuracy. The force value transition between the two stages is smooth without obvious pauses, which avoids over-punching damage during clamping and ensures sufficient driving force during stamping, thereby improving the stability and efficiency of riveting.

[0020] In this embodiment, the material base 21 is provided with a receiving cavity 210 adapted to the U-shaped part 11, and the receiving cavity 210 is used to receive the U-shaped part 11. The receiving cavity 210 can form a close fit to the U-shaped part 11, restrict the displacement of the U-shaped part 11 from multiple directions, and ensure that the U-shaped part 11 is in a preset riveting position in a pair of material bases 21, so as to avoid its displacement during placement or riveting.

[0021] In this embodiment, the upper mold assembly 3 further includes an upper mold base 32 and a pressure head mounting base 33. The pressure head mounting base 33 is detachably mounted on the side of the upper mold base 32 near the lower mold assembly 2. The pressure head 31 is detachably mounted on the pressure head mounting base 33. The pressure head mounting base 33 is provided with a pair of limiting posts 34, and the pair of limiting posts 34 are correspondingly arranged with a pair of mounting holes 120. The detachable structure allows both the pressure head 31 and the pressure head mounting base 33 to be replaced individually, facilitating the replacement of worn pressure head 31 or upper mold base 32, reducing maintenance costs, and lowering manufacturing and usage costs. The limiting posts 34 work in conjunction with the mounting holes 120. During riveting, the pair of limiting posts 34 are inserted into the pair of mounting holes 120 respectively, limiting the displacement of the mounting plate 12 in the horizontal direction, preventing the mounting plate 12 from shifting during riveting, and reducing the product scrap rate caused by positioning errors.

[0022] In this embodiment, as Figure 5 , 6As shown, the lower mold assembly 2 further includes a lower mold base 22, and a pair of material seats 21 are slidably mounted on the lower mold base 22 in the X direction. The reset assembly 5 includes a pressure block 51 and an elastic element 52. The pressure block 51 is sleeved on the pivot of the first rod portion 41 and the second rod portion 42. The elastic element 52 is mounted on the lower mold base 22. The end of the pressure block 51 near the lower mold base 22 slides against the elastic element 52. As the upper mold assembly 3 moves closer to the lower mold assembly 2, the pressing component 43 moves downward accordingly and gradually presses against the pivot connection between the first rod 41 and the second rod 42. As the upper mold assembly 3 continues to descend, the pressure of the pressing component 43 on the pivot connection between the first rod 41 and the second rod 42 increases, pushing the first rod 41 and the second rod 42 to rotate around their respective hinge points. During this process, the pressure block 51, which is sleeved on the pivot of the first rod 41 and the second rod 42, is driven to move closer to the lower mold base 22, squeezing the elastic element 52 and causing the elastic element 52 to spring back. The upper mold assembly 3 deforms and stores elastic potential energy. At this time, the reset assembly 5 is in a charged state, preparing for the subsequent reset action. After riveting, the upper mold assembly 3 moves away from the lower mold assembly 2, and the pressing component 43 moves upward accordingly. The pressure on the pivot connection between the first rod 41 and the second rod 42 gradually decreases until it disappears. At this time, the compressed elastic element 52 releases the stored elastic potential energy, pushing the pressure block 51 to move upward. The pressure block 51 drives the first rod 41 and the second rod 42 to rotate in opposite directions around their respective hinge points, thereby driving the pair of material seats 21 to open synchronously in the X direction, realizing the linkage assembly 4. Automatic reset; the vertically arranged elastic element 52 on the lower mold base 22 can ensure the opening and closing space between a pair of material seats 21. If the elastic element 52 is arranged horizontally, it will occupy the horizontal space, restrict the opening and closing range of the material seats 21, or cause the overall horizontal dimension of the mold to increase. However, the vertically arranged elastic element 52 is arranged in the up and down direction, which can utilize the longitudinal space between the lower mold base 22 and the pivot connection, avoiding spatial conflict with the horizontal movement of the material seats 21, which is conducive to the compact design of the structure. In addition, when the elastic element 52 is vertically arranged, its force on the pressure block 51 is always vertical, which can continuously exert force on the first rod 41. A stable force is applied at the pivot connection of the first rod 41 and the second rod 42. During the downward movement of the upper mold assembly 3, this force assists the pressing component 43 in smoothly rotating the first rod 41 and the second rod 42, preventing jamming when the first rod 41 and the second rod 42 are close to collinear due to force direction deviation. When the upper mold assembly 3 moves upward to reset, the vertical elastic force drives the first rod 41 and the second rod 42 to rotate in the opposite direction, preventing the first rod 41 and the second rod 42 from staying at a dead point due to force direction deviation, ensuring the continuity of the movement of the linkage assembly 4, and guaranteeing the smoothness of the cyclic operation. The elastic element 52 is a spring.

[0023] In this embodiment, a protective sleeve 53 is sleeved on the outer side of the elastic element 52. The protective sleeve 53 is installed on the lower mold base 22. The pressure block 51 has a protrusion 511 on the side near the lower mold base 22, and the protrusion 511 extends into the protective sleeve 53. The protective sleeve 53 is used to limit the radial displacement of the elastic element 52 and plays a guiding role when the elastic element 52 is compressed and reset, preventing the elastic element 52 from radially shifting during compression and reset, which would lead to reset failure and enhance the overall stability of the reset assembly 5. The protrusion 511 extends into the protective sleeve 53, and the two form a cooperative relationship. When the elastic element 52 drives the pressure block 51 to move, the protective sleeve 53 plays a guiding role for the protrusion 511, limiting the horizontal movement trajectory of the pressure block 51, ensuring that the pressure block 51 moves stably in the horizontal direction, and avoiding the pressure block 51 from tilting when subjected to force, so as to ensure the rotation of the first rod 41 and the second rod 42, thereby ensuring the accuracy of the opening and closing action of the pair of material seats 21.

[0024] In this embodiment, a set of limiting parts 23 is provided on the side of the lower mold base 22 near the upper mold assembly 3. The set of limiting parts 23 is spaced apart around the lower mold base 22. The set of limiting parts 23 is used to limit the maximum stroke distance of the upper mold assembly 3 during the closing process of the lower mold assembly 2 and the upper mold assembly 3, so as to avoid the upper mold assembly 3 from being excessively pressed down, causing the pressure head 31, material seat 21 or linkage assembly 4 to deform or wear due to overload, thereby reducing the mold failure rate. The number of limiting parts 23 in the set is 10, and the limiting parts 23 are bolts, all of which are threaded to the lower mold base 22.

[0025] In this embodiment, the first rod portion 41 is provided with a first limiting protrusion 411 on the side near the pressure block 51, and a pair of U-shaped seats 24 are provided on the lower mold base 22. The pair of U-shaped seats 24 are correspondingly arranged with a pair of second rod portions 42. The second rod portion 42 is hinged to the corresponding U-shaped seat 24. The inner walls on both sides of the U-shaped seat 24 are provided with second limiting protrusions 241. When the linkage component 4 is reset to the point where the pair of material seats 21 are fully opened, the side wall of the pressure block 51 abuts against the first limiting protrusion 411 in the X direction, and the upper end of the second rod portion 42 abuts against the second limiting protrusion 241. The first limiting protrusion 411 abuts against the pressure block 51, and the second limiting protrusion 241 abuts against the second rod 42, limiting the reset endpoint position of the linkage component 4. This ensures that the pair of material seats 21 can fully open to the preset maximum opening during reset. The synergistic effect of both prevents the linkage component 4 from exceeding its designed stroke due to reset inertia or excessive elastic force of the elastic element 52, preventing it from deviating from the preset motion trajectory due to force deviation, reducing force transmission loss or action jamming caused by component shaking, and ensuring the reliability of continuous operation. The limiting part 23 is detachably mounted on the U-shaped seat 24.

[0026] In this embodiment, it also includes: a pair of material-carrying components 6, which are spaced apart on the lower mold base 22 in the Y direction, and a pair of material seats 21 located between the pair of material-carrying components 6. Each material-carrying component 6 includes: a material-carrying part 61, which has a through groove 60 extending in the Y direction. The through groove 60 is positioned opposite the pair of material seats 21 and is used to accommodate the U-shaped part 11. The pair of material-carrying components 6 are used for loading and unloading the door latch. In use, the operator places the U-shaped part 11 to be riveted and the mounting plate 12 on the material-carrying component 6 at the loading end. At this time, the U-shaped part 11 is located in the through groove 60 at the loading end, and the mounting plate 12 is located at the upper end of the material-carrying part 61. Then, the U-shaped part 11 and the mounting plate 12 are pushed together along the extension direction of the through groove 60 to the pair of material seats 21. Subsequently, the upper mold component 3 moves down, driving the pair of material seats 21 through the linkage component 4. Seat 21 closes and clamps the U-shaped part 11 in the X direction; after riveting, the pair of material seats 21 open, and the operator pushes the riveted door latch along the Y direction to the loading part 61 at the unloading end. The door latch can be taken out along the extension direction of the through groove 60 on the loading part 61 at the unloading end; the through groove 60 is used to constrain the U-shaped part 11 in the X direction to prevent it from shifting during loading and unloading, and guide the U-shaped part 11 to accurately enter or leave between the pair of material seats 21.

[0027] In this embodiment, a material transfer component 7 is also included. The material transfer component 7 is used to sequentially transfer the door lock between the loading part 61, the material seat 21, and the unloading part 61 at the loading end. The material transfer component 7 includes a pair of clamping parts 71. The pair of clamping parts 71 are closable and installed on the upper end of the loading part 61 at the loading end. The pair of clamping parts 71 are adjustable in the Y direction. The clamping parts 71 extend to the upper end of the pair of material seats 21 in the Y direction. Each clamping part 71 is provided with a set of claws 711. The set of claws 711 are spaced apart along the axial direction of the clamping part 71. The pair of adjacent claws 711 in the X direction are used to clamp the mounting plate 12. The material transfer component 7 is used to transfer the U-shaped part 11 and mounting plate 12 to be riveted on the loading section 61 at the loading end to a pair of material seats 21, and to transfer the riveted U-shaped part 11 and mounting plate 12 on the pair of material seats 21 to the loading section 61 at the unloading end. First, the operator places the U-shaped part 11 and mounting plate 12 to be riveted on the loading section 61 at the loading end. The U-shaped part 11 is located in the through groove 60, and the mounting plate 12 is located at the upper end of the loading section 61. The through groove 60 extends in the Y direction to constrain the U-shaped part. The horizontal displacement of part 11 ensures that its axis is consistent with the material transfer path; then, the mounting plate 12 is gripped by a pair of adjacent jaws 711 on a pair of clamping parts 71 in the X direction. After gripping, the pair of clamping parts 71 are moved in the Y direction, driving the jaws 711 that grip the mounting plate 12 to move from the loading part 61 at the loading end to the material seat 21. When the U-shaped part 11 to be riveted and the mounting plate 12 move to the preset position on the material seat 21, the pair of clamping parts 71 open and the pair of material seats 21 close, so that the U-shaped part 11... The material falls into the receiving cavity 210, with the mounting plate 12 located at the upper end of the material seat 21. After riveting, the upper mold assembly 3 rises, and the pair of material seats 21 open. At this time, the pair of clamping parts 71 close, and the jaws 711 located at the material seat 21 clamp the door latch on the material seat 21. Simultaneously, the jaws 711 located on the loading and loading part 61 clamp the U-shaped part 11 to be riveted and the mounting plate 12. Then, the pair of clamping parts 71 are pushed to move a preset distance along the Y direction, and the jaws 711 originally located at the material seat 21 move... After the riveting is completed, the U-shaped part 11 and the mounting plate 12 move to the loading part 61 at the unloading end. The grippers 711, originally located on the loading part 61 at the loading end, move the U-shaped part 11 and the mounting plate 12 to be riveted to the material seat 21. At this time, a pair of clamping parts 71 open in the X direction. The riveted U-shaped part 11 and the mounting plate 12, and the U-shaped part 11 and the mounting plate 12 to be riveted, are respectively left on the loading part 61 and the material seat 21 at the unloading end. The material transfer component 7 resets and waits for the next loading and unloading cycle. There are three grippers 711 in a set. The material transfer component 7 also includes a base 72 and a mounting frame 73. The base 72 is located at the lower end of the loading part 61 at the loading end. The mounting frame 73 is mounted on the base 72 via a slide rail 74. A pair of clamping parts 71 are movably and adjustably mounted on the mounting frame 73 in the X direction.

[0028] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on the explanation herein, those skilled in the art can conceive of other specific embodiments of this utility model without creative effort, and these embodiments will all fall within the scope of protection of this utility model.

Claims

1. A door latch riveting mold for riveting the U-shaped part (11) of a door latch onto a mounting plate (12), wherein the mounting plate (12) has a pair of mounting holes (120), characterized in that: include: The lower mold assembly (2) includes: a pair of material seats (21) that can be opened and closed in the X direction, the material seats (21) being used to place the U-shaped part (11) to be riveted and the mounting plate (12); The upper mold assembly (3) is located at the upper end of the lower mold assembly (2). The upper mold assembly (3) has a pressure head (31) on the side near the lower mold assembly (2) that corresponds to the two ends of the U-shaped part (11). The pressure head (31) is used to upset the two ends of the U-shaped part (11). A pair of linkage components (4) are spaced apart on the lower mold assembly (2) in the X direction. A pair of material seats (21) are located between the pair of linkage components (4). The linkage component (4) includes: a first rod (41), a second rod (42), and a pressing component (43). The first rod (41) and the second rod (42) are pivotally connected. The end of the first rod (41) away from the second rod (42) is hinged to the corresponding material seat (21). The end of the second rod (42) away from the first rod (41) is hinged to the lower mold assembly (2). The pressing component (43) is installed on the side of the upper mold assembly (3) near the lower mold assembly (2). The end of the pressing component (43) away from the upper mold assembly (3) slides against the pivot connection of the first rod (41) and the second rod (42). The reset component (5) is located on the side of the lower mold component (2) near the upper mold component (3). The reset component (5) is used to reset the first rod part (41) and the second rod part (42).

2. The door lock buckle riveting mold according to claim 1, characterized in that: The material holder (21) is provided with a receiving cavity (210) adapted to the U-shaped part (11), and the receiving cavity (210) is used to receive the U-shaped part (11).

3. The door lock buckle riveting mold according to claim 1, characterized in that: The upper mold assembly (3) further includes: an upper mold base (32) and a pressure head mounting base (33). The pressure head mounting base (33) is detachably mounted on the side of the upper mold base (32) near the lower mold assembly (2). The pressure head (31) is detachably mounted on the pressure head mounting base (33). The pressure head mounting base (33) is provided with a pair of limiting posts (34). The pair of limiting posts (34) are corresponding to a pair of mounting holes (120).

4. The door lock buckle riveting mold according to claim 1, characterized in that: The lower mold assembly (2) further includes: a lower mold base (22), a pair of material seats (21) are slidably mounted on the lower mold base (22) in the X direction, and the reset assembly (5) includes: a pressure block (51) and an elastic element (52), the pressure block (51) is sleeved on the pivot of the first rod portion (41) and the second rod portion (42), the elastic element (52) is mounted on the lower mold base (22), and the end of the pressure block (51) near the lower mold base (22) slides against the elastic element (52).

5. A door lock buckle riveting mold according to claim 4, characterized in that: The elastic element (52) is covered with a sleeve (53) on the outside. The sleeve (53) is installed on the lower mold base (22). The pressure block (51) has a protrusion (511) on the side near the lower mold base (22). The protrusion (511) extends into the sleeve (53).

6. A door lock buckle riveting mold according to claim 4, characterized in that: A set of limiting parts (23) is provided on the side of the lower mold base (22) near the upper mold assembly (3), and the set of limiting parts (23) is arranged at intervals along the circumference of the lower mold base (22).

7. A door lock buckle riveting mold according to claim 4, characterized in that: The first rod (41) is provided with a first limiting protrusion (411) on the side near the pressure block (51). The lower mold base (22) is provided with a pair of U-shaped seats (24). The pair of U-shaped seats (24) are provided with a pair of second rods (42) in a one-to-one correspondence. The second rod (42) is hinged to the corresponding U-shaped seat (24). The inner walls on both sides of the U-shaped seat (24) are provided with second limiting protrusions (241). When the linkage assembly (4) is reset to the point where the pair of material seats (21) are fully opened, the side wall of the pressure block (51) abuts against the first limiting protrusion (411) in the X direction, and the upper end of the second rod (42) abuts against the second limiting protrusion (241).

8. A door lock buckle riveting mold according to claim 4, characterized in that: Also includes: A pair of material carriers (6) are mounted on a lower mold base (22) at intervals in the Y direction. A pair of material seats (21) are located between the pair of material carriers (6). The material carrier (6) includes a material carrier part (61) with a through groove (60) extending in the Y direction. The through groove (60) is disposed opposite to the pair of material seats (21) and is used to accommodate a U-shaped part (11).

9. A door lock buckle riveting mold according to claim 8, characterized in that: Also includes: Material transfer component (7), the material transfer component (7) is used to sequentially transfer the door lock between the loading part (61), the material seat (21) at the loading end and the loading part (61) at the unloading end. The material transfer component (7) includes: a pair of clamping parts (71), the pair of clamping parts (71) are closable and installed on the upper end of the loading part (61), the pair of clamping parts (71) are movable and adjustable in the Y direction, the clamping parts (71) extend in the Y direction to the upper end of the pair of material seats (21), each clamping part (71) is provided with a set of jaws (711), the set of jaws (711) are spaced apart along the axial direction of the clamping part (71), and the pair of adjacent jaws (711) in the X direction are used to clamp the mounting plate (12).

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