A piercing and stripping assembly for a trimming die and a trimming die
By designing a punching and unloading assembly with a coaxial through hole and an elastic extrusion mechanism in the trimming die, the problem of workpiece jamming was solved, and punching and trimming were carried out simultaneously, improving processing efficiency and hole position consistency, and avoiding workpiece damage.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SICHUAN JIXING LIGHTWEIGHT TECH CO LTD
- Filing Date
- 2025-08-08
- Publication Date
- 2026-07-24
Smart Images
Figure CN224542853U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of edge trimming mold technology, and in particular to a punching and unloading component for an edge trimming mold and an edge trimming mold. Background Technology
[0002] Trimming dies are specialized tooling used to remove excess edge material from workpieces after forming. They typically consist of a precision-fitted upper and lower die, and are powered by a press to achieve efficient shearing. They can precisely control the punching gap to ensure cut quality and are suitable for finishing automotive body panels, forging burrs, or injection molding flash.
[0003] In related technologies, for workpieces that require cutting and side / top punching, the cut workpiece is prone to getting stuck in the lower die, affecting the removal of the workpiece. Utility Model Content
[0004] This application discloses a punching and unloading assembly for a trimming die and a trimming die, in order to solve the problem that workpieces are easily stuck in the lower die in the prior art.
[0005] To solve the above problems, the present invention adopts the following technical solution: In a first aspect, this application discloses a punching and unloading assembly for a trimming die, comprising: The first abutting structure is provided on the upper mold; the first abutting structure is provided with a first through hole corresponding to the part to be punched on the top side of the workpiece; The second abutting structure is provided on the lower die and is used to place the workpiece; the second abutting structure is provided with a second through hole corresponding to the punching part of the workpiece, and the second through hole and the first through hole are coaxially arranged. The cutting tool is positioned on the upper mold and surrounds the first abutment structure; A punching rod is set on the upper die, one end of which passes through the first through hole to punch a hole in the top side of the workpiece; The ejector is located in the second through hole. During the mold closing process of the upper and lower molds, the stamping rod enters the second through hole to elastically compress the ejector. During the mold opening process of the upper and lower molds, the ejector extends out of the second through hole to eject the side of the workpiece.
[0006] In some solutions, the ejector includes an ejector block, a first groove and a second elastic member. The first groove is formed on one side of the second through hole, the ejector block is slidably disposed in the first groove, and the second elastic member is connected between the inner wall of the first groove and the ejector block. During the mold closing process of the upper and lower molds, the ejector block moves along the first slide groove to compress the second elastic element. During the mold separating process of the upper and lower molds, the ejector block moves along the first slide groove and extends out of the second through hole to eject the side of the workpiece.
[0007] In some designs, the ejector also includes a slider and a second groove, the second groove being connected to the first groove, the slider being slidably engaged with the second groove, the slider being slidably connected to the ejector block, and the two ends of the second elastic member being connected to the inner wall of the second groove and the slider, respectively. During the process of the upper and lower molds closing, the ejector block moves downward along the first slide groove, and the stamping rod enters the second through hole to elastically squeeze the ejector block, so that the slider moves along the second slide groove and drives the ejector block to enter the first slide groove horizontally.
[0008] In some designs, the ejector block has a guide hole on one side relative to the slider, and the guide hole is connected to a limiting groove on the side away from the slider. The slider is provided with a guide rod that slides with the guide hole on the side relative to the ejector block, and a limiting block is provided at one end of the guide rod that extends to the limiting groove. The limiting block slides with the limiting groove, and a third elastic element is connected between the limiting block and the inner wall of the limiting groove.
[0009] In some designs, the first abutting structure is slidably connected to the upper mold along the height direction of the upper mold and can move between a first position and a second position; During the process of the upper and lower molds closing, the first abutting structure moves from the first position to the second position.
[0010] In some designs, the top of the first abutting structure is provided with a first guide post, and the first abutting structure is slidably connected to the upper mold through the first guide post.
[0011] In some designs, a connecting plate is provided at the top of the first guide post, and a second guide post is provided on the upper mold. The connecting plate is slidably connected to the upper mold through the second guide post. The connecting plate and the upper mold are connected by a first elastic element, which is sleeved on the second guide post.
[0012] In some designs, the lower die is provided with a stripping hole, one end of which is connected to the second through hole and the other end is connected to the outside, so that the punching waste of the workpiece can be discharged through the stripping hole; And / or, the upper die and / or lower die are provided with a limit rod for limiting the maximum downward stroke of the upper die.
[0013] In some designs, the punching and unloading assembly of the trimming die also includes a buffer, which is positioned on the lower die corresponding to the part of the workpiece to be cut.
[0014] Secondly, this application also provides a trimming die, including the punching and unloading assembly of the trimming die in the first aspect.
[0015] The technical solution adopted in this utility model can achieve the following beneficial effects: The punching and unloading assembly of the trimming die of this application, during the mold closing process of the upper and lower dies, the punching rod moves towards the lower die to punch the top side of the workpiece placed on the second abutment structure. The cutting tool cuts the excess part of the workpiece. When the punching rod enters the second through hole, it elastically compresses the ejector to allow the punching waste to be discharged, and avoids rigid contact between the punching rod and the ejector, which could damage the ejector. During the mold separation process of the upper and lower dies, the ejector resets under elastic force and extends out of the second through hole to eject the side of the workpiece, thereby reducing the workpiece getting stuck in the second abutment structure. The design of the first abutment structure and the stamping rod integrates the punching function into the upper die, achieving precise synchronization of punching and trimming processes. The first through hole provides a wrapping positioning of the workpiece's punching area, ensuring that the first stamping rod acts perpendicularly on the workpiece, avoiding offset or burrs. Simultaneously, the cutting tool and punching action work together when the upper die presses down, significantly shortening the processing cycle and reducing material deformation or positioning accumulation errors caused by step-by-step operations, thus significantly improving the processing efficiency and hole consistency of complex workpieces. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is an isometric view of the trimming die disclosed in some embodiments of this application; Figure 2 This is a bottom view of the trimming die disclosed in some embodiments of this application; Figure 3 yes Figure 2 A cross-sectional view of the AA plane; Figure 4 yes Figure 3 Enlarged view of point A in the middle; Figure 5 yes Figure 4 Enlarged view of point B in the middle; Figure 6 yes Figure 2 A cross-sectional view of the BB plane.
[0018] In the picture: 100-Upper mold, 110-First abutting structure, 111-First through hole, 120-First guide post, 130-Connecting plate, 140-First elastic element, 150-Second guide post, 160-Guide sleeve; 200 - Lower mold, 210 - Second abutment structure, 211 - Second through hole, 220 - Unloading hole, 230 - Limiting rod, 240 - Third guide post; 300 - Stamping rod; 400-Ejector, 410-Ejector block, 411-Guide hole, 412-Limiting groove, 420-First slide groove, 430-Second elastic element, 440-Slider, 450-Second slide groove, 460-Guide rod, 470-Limiting block, 480-Third elastic element; 500 - Buffer component, 510 - Support block, 520 - Fourth elastic component; 600 - Cutting tools; 700 - Workpiece, 710 - Part to be cut. Detailed Implementation
[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0020] The terms "first," "second," "third," "fourth," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," "third," "fourth," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.
[0021] The inventors discovered during the process of trimming workpieces that, due to different processing requirements, some workpieces are placed at a greater depth in the lower mold. The cut workpieces may get stuck due to the elastic deformation of the surrounding materials, making it easy for the cut workpieces to get stuck in the lower mold and affecting the removal of the workpieces. In addition, traditional molds need to complete the trimming and side top punching in steps, with each process requiring an independent mold. The equipment needs to be stopped multiple times to change molds, which prolongs the production cycle and results in cumbersome processes and low efficiency.
[0022] The following is in conjunction with the appendix Figures 1 to 6 The present application provides a detailed description of a punching and unloading assembly and a cutting die for a cutting edge, through specific embodiments and application scenarios.
[0023] Some embodiments of this application disclose a punching and unloading assembly for a trimming die, including: a first abutting structure 110, a second abutting structure 210, a cutting tool 600, a punching rod 300, and an ejector 400; like Figure 1 , Figure 3 and Figure 4 As shown, the first abutting structure 110 is disposed on the upper mold 100, and the second abutting structure 210 is disposed on the lower mold 200, and is used to place the workpiece 700. After the lower mold 200 and the upper mold 100 are closed, the first abutting structure 110 and the second abutting structure 210 respectively abut against the workpiece 700, forcing the workpiece 700 into a stable stress state before cutting and punching, effectively suppressing elastic slippage and stress release during shearing and punching processes.
[0024] like Figure 1 and Figure 3 As shown, the cutting tool 600 is disposed on the upper mold 100 and surrounding the first abutment structure 110. The cutting tool 600 is used to cut off the excess part of the workpiece 700. After the upper mold 100 and the lower mold 200 are closed, under the pressure of the upper mold 100, the cutting tool 600 disposed around the first abutment structure 110 cuts the workpiece 700 located outside the first abutment structure 110 and the second abutment structure 210 to cut off the excess part of the workpiece 700.
[0025] like Figure 1 , Figure 3 and Figure 4 As shown, the first abutting structure 110 is provided with a first through hole 111 corresponding to the part to be punched on the side top of the workpiece 700. The stamping rod 300 is provided on the upper die 100, and one end of it passes through the first through hole 111 to punch the side top of the workpiece 700. During the process of the upper die 100 and the lower die 200 closing, the stamping rod 300 moves toward the lower die 200 to punch the workpiece 700 placed on the second abutting structure 210. The design of the first abutment structure 110 and the stamping rod 300 integrates the side top punching function into the upper die 100, achieving precise synchronization of punching and trimming processes. The first through hole 111 is used to wrap around and position the area of the workpiece 700 to be punched, ensuring that the stamping rod 300 acts vertically on the workpiece 700, avoiding offset or burrs. At the same time, when the upper die 100 presses down, the tool 600 and the punching action are completed in coordination, which greatly shortens the processing cycle and reduces material deformation or positioning accumulation errors caused by step-by-step operations, significantly improving the processing efficiency and hole position consistency of complex workpieces 700.
[0026] like Figure 1 , Figure 3 , Figure 4 and Figure 5As shown, the second abutment structure 210 is provided with a second through hole 211 corresponding to the punching part of the workpiece 700. The second through hole 211 and the first through hole 111 are coaxially arranged. By the coaxial arrangement of the second through hole 211 and the first through hole 111, the punching rod 300 is constrained by the coaxial arrangement of the second through hole 211 and the first through hole 111 during the punching process, which enhances the punching stability and reduces the wear of the punching rod 300.
[0027] In this embodiment, there are multiple first through holes 111, stamping rods 300, and second through holes 211, which can be flexibly set according to the processing requirements of workpiece 700. This embodiment does not limit this.
[0028] In this preferred embodiment, the diameter of the second through hole 211 is larger than that of the first through hole 111, so that there is a gap between the stamping rod 300 and the side wall of the second through hole 211, which facilitates the setting of the ejector 400.
[0029] like Figures 3 to 5 As shown, the ejector 400 is disposed in the second through hole 211. During the mold closing process of the upper mold 100 and the lower mold 200, the stamping rod 300 moves toward the lower mold 200 to punch the top side of the workpiece 700 placed in the second abutment structure 210. The cutter 600 cuts the excess part of the workpiece 700. The stamping rod 300 enters the second through hole 211 to elastically squeeze the ejector 400 so that the punching waste can be discharged and the stamping rod 300 and the ejector 400 can be rigidly contacted, which would cause damage to the ejector 400. During the mold opening process of the upper mold 100 and the lower mold 200, the ejector 400 is reset under elastic force. The ejector 400 extends out of the second through hole 211 to eject the side of the workpiece 700, thereby reducing the probability of the workpiece 700 getting stuck in the second abutment structure 210 and avoiding surface scratches or structural damage to the workpiece 700 caused by violent unloading.
[0030] In this embodiment, a positioning part is provided at the bottom of the second abutment structure 210, so that the workpiece 700 can be positioned when placed on the second abutment structure 210, and the position where the workpiece 700 needs to be punched on the side is also positioned. The positioning part can accurately match the geometric features of the workpiece 700.
[0031] like Figures 3 to 5As shown, the ejector 400 includes an ejector block 410, a first groove 420, and a second elastic member 430. The first groove 420 is opened on one side inside the second through hole 211. The ejector block 410 is slidably disposed in the first groove 420. The second elastic member 430 is connected between the inner wall of the first groove 420 and the ejector block 410. During the mold closing process of the upper mold 100 and the lower mold 200, the ejector block 410 moves downward along the first slide groove 420, and the stamping rod 300 enters the second through hole 211 to squeeze the ejector block 410 and compress the second elastic element 430 so that the punching waste can be discharged and the stamping rod 300 can avoid rigid contact with the ejector block 410, which would cause damage to the ejector block 410. During the mold opening process of the upper mold 100 and the lower mold 200, the ejector block 410 resets under the elastic force of the second elastic element 430, and the ejector block 410 moves upward along the first slide groove 420 and extends out of the second through hole 211 so as to eject the side of the workpiece 700, thereby reducing the probability of the workpiece 700 getting stuck in the second abutment structure 210, and the flexible push can prevent the workpiece 700 from cracking or deforming due to local stress concentration.
[0032] In this embodiment, the top of the ejector block 410 is arc-shaped, and its top can contact the bottom side of the workpiece 700, which is the gap distance between the stamping rod 300 and the side wall of the second through hole 211, so as to avoid damage to the workpiece 700 caused by contact between the ejector block 410 and the workpiece 700. The upper part of the side of the ejector block 410 near the stamping rod 300 is inclined, so that after the stamping rod 300 moves down and contacts the ejector block 410, the stamping rod 300 continues to move down and can generate a lateral force on the inclined surface of the ejector block 410, pushing the ejector block 410 into the first slide groove 420. The lower part of the side of the ejector block 410 near the stamping rod 300 is vertical, so that when the stamping rod 300 is located at the lower part of the ejector block 410, the punching waste can be discharged from the second through hole 211.
[0033] In this embodiment, the second elastic element 430 is preferably a spring.
[0034] like Figures 3 to 5As shown, the ejector 400 also includes a slider 440 and a second slide groove 450. The second slide groove 450 is connected to the first slide groove 420. The slider 440 is slidably engaged with the second slide groove 450 and slidably connected to the ejector block 410. The two ends of the second elastic member 430 are respectively connected to the inner wall of the second slide groove 450 and the slider 440. By setting the first slide groove 420 and the second slide groove 450, the ejector block 410 can move both vertically and horizontally, improving the adaptability of the automatic adjustment of the ejector block 410. During the mold closing process of the upper mold 100 and the lower mold 200, the ejector block 410 moves downward along the first slide groove 420, and the stamping rod 300 enters the second through hole 211 to squeeze the ejector block 410, thereby causing the slider 440 to move horizontally along the second slide groove 450 and driving the ejector block 410 to enter the first slide groove 420 horizontally.
[0035] like Figures 3 to 5 As shown, the ejector block 410 has a guide hole 411 on one side relative to the slider 440. The side of the guide hole 411 away from the slider 440 is connected to a limiting groove 412. The slider 440 has a guide rod 460 on one side relative to the ejector block 410 that slides in cooperation with the guide hole 411. A limiting block 470 is provided at one end of the guide rod 460 that extends to the limiting groove 412. The limiting block 470 slides in cooperation with the limiting groove 412. The sliding cooperation of the limiting block 470 in the limiting groove 412 prevents the ejector block 410 from accidentally separating from the slider 440. A third elastic member 480 is connected between the limiting block 470 and the inner wall of the limiting groove 412. During the mold closing process of the upper mold 100 and the lower mold 200, the ejector block 410 moves downward along the first slide groove 420, thereby causing the guide hole 411 and the limiting block 470 to move downward along the guide rod 460 and the limiting groove 412 respectively, thereby stretching the third elastic element 480; during the mold separating process of the upper mold 100 and the lower mold 200, the ejector block 410 is first horizontally reset by the second elastic element 430, and then the ejector block 410 is driven upward by the third elastic element 480 to be reset until the first abutting structure 110 leaves the workpiece 700. The third elastic element 480 continues to drive the ejector block 410 to move upward, ejecting the side of the workpiece 700. The side of the workpiece 700 is slightly higher than the second abutting structure 210, and the workpiece 700 can be easily removed.
[0036] In this embodiment, in the initial state, the ejector block 410 extends a certain distance out of the second through hole 211. After the workpiece 700 is placed, although the ejector block 410 will descend a certain distance, it will not completely enter the second through hole 211, so that when the ejector block 410 is reset, the side of the workpiece 700 can be ejected.
[0037] In this embodiment, the third elastic element 480 is preferably a spring.
[0038] like Figure 3 and Figure 4 As shown, the first abutting structure 110 is slidably connected to the upper mold 100 along the height direction of the upper mold 100, and can move between the first position and the second position. When the first abutting structure 110 is in the first position, the bottom of the stamping rod 300 is located in the first through hole 111. When the first abutting structure 110 is in the second position, the bottom of the stamping rod 300 is located in the second through hole 211.
[0039] like Figure 3 As shown, the top of the first abutting structure 110 is provided with a first guide post 120, and the first abutting structure 110 is slidably connected to the upper mold 100 through the first guide post 120. The first guide post 120 on the top of the first abutting structure 110 and its slidable connection with the upper mold 100 guide the movement of the first abutting structure 110 in the height direction, ensuring that the first abutting structure 110 slides smoothly.
[0040] Correspondingly, the upper mold 100 has a guide hole, and the first guide post 120 is slidably disposed in the guide hole to realize the sliding connection between the first abutting structure 110 and the upper mold 100.
[0041] In this embodiment, multiple first guide posts 120 can be provided to further increase the smoothness of the sliding of the first abutment structure 110. It should be noted that the number of first guide posts 120 can be flexibly set according to actual usage requirements, and this embodiment does not limit this.
[0042] like Figure 1 and Figure 3As shown, a connecting plate 130 is provided at the top of the first guide post 120, and a second guide post 150 is provided on the upper mold 100. The connecting plate 130 is slidably connected to the upper mold 100 through the second guide post 150. The connecting plate 130 and the upper mold 100 are connected by a first elastic element 140, which is sleeved on the second guide post 150. When the upper mold 100 and the lower mold 200 are closed, during the process of the first abutting structure 110 moving from the first position to the second position, the connecting plate 130 compresses the first elastic element 140, and the first elastic element 140 stores elastic potential energy. After the upper mold 100 and the lower mold 200 are separated, the first elastic element 140 releases its elastic potential energy, causing the first abutting structure 110 to move from the second position to the first position. When the upper die 100 presses down, the first abutment structure 110 is initially in the first position, using the contact pressure between its end face and the workpiece 700 to clamp the workpiece 700. Then, as the pressure increases, it slides to the second position. At this point, the punching rod 300 fully extends out of the first through hole 111 to perform the punching action and extends into the second through hole 211. The cutter 600 cuts the excess portion of the workpiece 700. This design, through staged pressure application and decoupling of actions, ensures the rigid fixation of the workpiece 700 before punching and avoids the interference of punching and shearing reaction forces on the stability of the workpiece 700, significantly improving the quality of the punched cross-section and the shearing quality. By setting the second guide post 150 in the upper die 100, the connecting plate 130 remains horizontal during its up-and-down movement, eliminating the problem of asynchronous movement of multiple first guide posts 120 due to the tilt of the connecting plate 130.
[0043] In this embodiment, multiple second guide posts 150 can be provided to further increase the smoothness of the sliding of the connecting plate 130. It should be noted that the number of second guide posts 150 can be flexibly set according to actual usage requirements, and this embodiment does not limit this.
[0044] In this embodiment, there are multiple first elastic elements 140, which can be flexibly set according to actual usage requirements. This embodiment does not limit this.
[0045] In this preferred embodiment, the first elastic element 140 is preferably a spring. By sleeved the first elastic element 140 on the second guide post 150, stress concentration caused by eccentric compression of the spring is reduced, the risk of fatigue fracture is lowered, and the service life of the first elastic element 140 is increased.
[0046] like Figure 3 and Figure 4As shown, the lower die 200 is provided with a discharge hole 220. One end of the discharge hole 200 is connected to the second through hole 211, and the other end is connected to the outside, so that the punching waste of the workpiece 700 can be discharged through the discharge hole 200. After the stamping rod 300 completes the punching, the stamping rod 300 continues to move downward into the second through hole 211, and squeezes the ejector block 410 into the first slide groove 420 along the inclined surface of the ejector block 410. This allows the waste to enter the discharge hole 200 through the second through hole 211 and slide out of the die quickly, avoiding the problem of the die jamming due to waste retention. At the same time, this design separates the chip removal path from the processing area of the workpiece 700, which not only ensures the stability of continuous stamping operation (reducing the frequency of downtime for chip removal), but also optimizes the waste collection efficiency through gravity guidance, significantly improving the reliability of the die and the pace of mass production.
[0047] In this embodiment, the number of discharge holes 220 can be one or more, and can be flexibly set according to design requirements. This embodiment does not limit this.
[0048] In this embodiment, the unloading hole 220 is a through hole extending along the height direction of the lower die 200. This facilitates processing and reduces the time that waste material stays in the unloading hole 220, thus reducing the probability of the unloading hole 220 becoming clogged.
[0049] In this preferred embodiment, the diameter of the discharge hole 220 is larger than the diameter of the second through hole 211, so as to further reduce the probability of the discharge hole 220 being blocked.
[0050] like Figure 1 and Figure 3 As shown, the upper mold 100 and / or the lower mold 200 are provided with a limiting rod 230 for limiting the maximum downward stroke of the upper mold 100. By rigidly contacting the limiting rod 230 with the upper mold 100 and / or the lower mold 200, the downward endpoint of the upper mold 100 is precisely controlled, and the maximum compression stroke of the cutter 600 during mold closing is forcibly limited, thus preventing the upper mold 100 from moving too far and damaging the workpiece 700.
[0051] In some embodiments, the limiting rod 230 is disposed at the bottom of the upper mold 100.
[0052] In some embodiments, the limiting rod 230 is disposed on the top of the lower mold 200. In some embodiments, limit rods 230 are provided at the bottom of the upper mold 100 and the top of the lower mold 200, respectively.
[0053] In this embodiment, guide sleeves 160 are provided on both sides of the bottom of the upper mold 100, and third guide posts 240 corresponding to the guide sleeves 160 are provided on both sides of the top of the lower mold 200. The guide sleeves 160 and the third guide posts 240 slide together to improve the stability of the movement of the upper mold 100.
[0054] like Figure 1 and Figure 6 As shown, the punching and unloading assembly of the trimming die also includes a buffer 500, which is disposed on the lower die 200 corresponding to the part 710 of the workpiece 700 to be cut. During the closing process of the upper die 100 and the lower die 200, the part 710 of the workpiece 700 to be cut comes into contact with the buffer 500. When the cutter 600 cuts the excess part of the workpiece 700, the part 710 of the workpiece 700 to be cut is prone to splashing due to shearing force. Therefore, by providing the buffer 500 on the lower die 200, the part 710 of the workpiece 700 to be cut comes into contact with the buffer 500 during the cutting process, so as to avoid the workpiece 700 from splashing.
[0055] In this embodiment, there can be multiple buffers 500, which can be flexibly set according to usage requirements. This embodiment does not limit this.
[0056] like Figure 6 As shown, the buffer 500 includes a support block 510 and a fourth elastic element 520. The support block 510 has a through hole, and is connected to the lower mold 200 by a bolt passing through the through hole. The fourth elastic element 520 is located in the through hole and is sleeved on the outer surface of the bolt. The two ends of the fourth elastic element 520 are connected to the bolt and the support block 510 respectively, so that the support block 510 is slidably connected to the lower mold 200 along the height direction of the lower mold 200. During the mold closing process of the upper mold 100 and the lower mold 200, the cut part 710 of the workpiece 700 contacts the top of the support block 510. During the cutting process of the workpiece 700, the cutter 600 contacts the support block 510 under the shearing force of the cutter 600, causing the support block 510 to move downward. During the downward movement, the support block 510 compresses the fourth elastic element 520, thereby buffering the shearing force of the cut part 710 of the workpiece 700 and preventing the cut part 710 of the workpiece 700 from splashing.
[0057] In this embodiment, the fourth elastic element 520 is preferably a spring.
[0058] Some embodiments of this application also provide a trimming die, including a punching and unloading assembly for the trimming die.
[0059] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.
[0060] Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.
[0061] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.
Claims
1. A punching and unloading assembly for a trimming die, characterized in that, include: A first abutting structure is provided on the upper mold; the first abutting structure is provided with a first through hole corresponding to the punching part on the top side of the workpiece; The second abutting structure is provided on the lower die for placing the workpiece; the second abutting structure is provided with a second through hole corresponding to the punching part of the workpiece, and the second through hole and the first through hole are coaxially arranged; A cutting tool is disposed on the upper mold and arranged around the first abutment structure; A stamping rod is provided on the upper die, one end of which passes through the first through hole to punch a hole in the top side of the workpiece; An ejector is disposed in the second through hole. During the process of the upper mold and the lower mold closing, the stamping rod enters the second through hole to elastically compress the ejector. During the process of the upper mold and the lower mold separating, the ejector extends out of the second through hole to eject the side of the workpiece.
2. The punching and unloading assembly of a trimming die according to claim 1, characterized in that, The ejector includes an ejector block, a first groove, and a second elastic member. The first groove is opened on one side of the second through hole. The ejector block is slidably disposed in the first groove. The second elastic member is connected between the inner wall of the first groove and the ejector block. During the mold closing process of the upper mold and the lower mold, the ejector block moves along the first slide groove to compress the second elastic element. During the mold separating process of the upper mold and the lower mold, the ejector block moves along the first slide groove and extends out of the second through hole to eject the side of the workpiece.
3. The punching and unloading assembly of a trimming die according to claim 2, characterized in that, The ejector also includes a slider and a second slide groove, the second slide groove being connected to the first slide groove, the slider being slidably engaged with the second slide groove, the slider being slidably connected to the ejector block, and the two ends of the second elastic member being connected to the inner wall of the second slide groove and the slider, respectively. During the process of the upper mold and the lower mold closing, the ejector block moves downward along the first slide groove, and the stamping rod enters the second through hole to elastically squeeze the ejector block, so that the slider moves along the second slide groove and drives the ejector block to enter the first slide groove horizontally.
4. The punching and unloading assembly of a trimming die according to claim 3, characterized in that, The ejector block has a guide hole on one side relative to the slider. The guide hole is connected to a limiting groove on the side away from the slider. The slider has a guide rod that slides with the guide hole on one side relative to the ejector block. A limiting block is provided at one end of the guide rod that extends to the limiting groove. The limiting block slides with the limiting groove. A third elastic element is connected between the limiting block and the inner wall of the limiting groove.
5. The punching and unloading assembly of a trimming die according to claim 1, characterized in that, The first abutting structure is slidably connected to the upper mold along the height direction of the upper mold, and can move between a first position and a second position; During the process of the upper mold and the lower mold closing, the first abutting structure moves from the first position to the second position.
6. The punching and unloading assembly of a trimming die according to claim 5, characterized in that, The top of the first abutting structure is provided with a first guide post, and the first abutting structure is slidably connected to the upper mold through the first guide post.
7. The punching and unloading assembly of a trimming die according to claim 6, characterized in that, The top of the first guide post is provided with a connecting plate, the upper mold is provided with a second guide post, the connecting plate is slidably connected to the upper mold through the second guide post, and the connecting plate and the upper mold are connected by a first elastic element, which is sleeved on the second guide post.
8. The punching and unloading assembly of a trimming die according to claim 1, characterized in that, The lower die is provided with a discharge hole, one end of which is connected to the second through hole and the other end is connected to the outside, so that the punching waste of the workpiece can be discharged through the discharge hole; And / or, the upper die and / or the lower die are provided with a limiting rod for limiting the maximum downward stroke of the upper die.
9. The punching and unloading assembly of a trimming die according to claim 1, characterized in that, The punching and unloading assembly of the trimming die also includes a buffer component, which is positioned on the lower die corresponding to the part of the workpiece to be cut.
10. A trimming mold, characterized in that, The punching and unloading assembly of the trimming die as described in any one of claims 1-9.