A die structure having a dual inclined wedge piercing assembly

Abstract

The utility model discloses a die structure with double inclined wedge punch assembly, which comprises: an upper die seat, which is provided with a pressing core and an elastic element; a lower die seat, which is provided with a lower punch insert block and a driving guide plate; a double inclined wedge punch assembly, which comprises an upper inclined wedge mechanism and a lower inclined wedge mechanism; the upper and lower inclined wedge mechanisms are respectively arranged in the upper die seat and the lower die seat, and the driving end of the upper inclined wedge mechanism is correspondingly arranged with the driving guide plate; the upper inclined wedge mechanism is provided with a driving inclined surface, and the lower inclined wedge mechanism is provided with a driven inclined surface matched with the driving inclined surface; the upper and lower inclined wedge mechanisms are further provided with a first punch and a second punch at the front ends, and the first punch and the second punch are arranged at an included angle; the upper die seat moves downward to drive the upper inclined wedge mechanism to move toward the lower die seat, and the upper inclined wedge mechanism abuts against the driving guide plate to move toward the plate material, and the driving inclined surface cooperates with the driven inclined surface to drive the lower inclined wedge mechanism to move, so that the first punch and the second punch perform double-angle punching operation on the plate material; the utility model can complete multi-angle punching in a dense space through one process.

Description

Technical Field

[0001] This utility model relates to the field of cold stamping die technology, specifically a die structure with a double wedge punching assembly. Background Technology

[0002] In the field of mold design and manufacturing, with increasingly fierce market competition, enterprises are constantly raising their requirements for production efficiency, cost control, and product quality. Traditional mold structures, when faced with complex punching requirements, especially when the punching angles differ and are densely packed in the vertical direction, often require a sequential processing method, that is, using two sets of molds to complete the punching processes at different angles. However, this sequential production method has many drawbacks:

[0003] First, mold development costs increase significantly, including material, processing, and debugging costs. Second, each process requires independent stamping equipment or multiple clamping operations, which not only increases equipment investment costs but also extends the production cycle due to inter-process transfers and repeated positioning. In addition, the parts require multiple positioning and clamping operations, which inevitably leads to the accumulation of positioning errors, resulting in a decrease in punching position accuracy and affecting product quality consistency.

[0004] To address the problems mentioned above in the background art, the present invention aims to provide a mold structure with a double oblique wedge punching assembly. Utility Model Content

[0005] The purpose of this utility model is to overcome the above-mentioned defects or problems in the background technology and provide a mold structure with a double wedge punching component. Its structure is simple and easy to use, and it can complete multi-angle punching in a dense space in one process, effectively reducing the number of processes and reducing production costs.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A mold structure with a double wedge punching assembly includes an upper mold base, a lower mold base, and a double wedge punching assembly;

[0008] The upper mold base is provided with a pressure core and an elastic element; the pressure core is embedded in the upper mold base and provides downward pressure under the action of the elastic element;

[0009] The lower die base is provided with a lower punch insert and a drive guide plate. The lower punch insert is correspondingly arranged with the blank holder core, and the two cooperate with each other to clamp and fix the sheet metal. The drive guide plate is installed on one side of the lower die base, and its working surface is inclined. Both sides are provided with guide protrusions to drive the double inclined wedge punching assembly to move when the upper die base moves downward.

[0010] A double-wedge punching assembly includes an upper wedge mechanism and a lower wedge mechanism. The upper and lower wedge mechanisms are respectively mounted in an upper die base and a lower die base via sliding guide plates, and the driving end of the upper wedge mechanism is correspondingly arranged with the driving guide plate. The upper wedge mechanism is provided with a driving inclined surface, and the lower wedge mechanism is provided with a driven inclined surface that cooperates with the driving inclined surface. The front ends of the upper and lower wedge mechanisms are also provided with a first punch and a second punch, respectively, and the center lines of the first and second punches are arranged at an included angle.

[0011] The upper die base moves downward, driving the upper wedge mechanism toward the lower die base and abutting against the drive guide plate, causing the upper wedge mechanism to move toward the sheet metal. The drive inclined surface cooperates with the driven inclined surface, thereby driving the lower wedge mechanism to move synchronously, so that the first and second punches complete the dual-angle punching operation on the sheet metal.

[0012] Preferably, the mold structure further includes a limiting component for preventing the upper wedge mechanism from disengaging from the upper mold base; the limiting component includes a sleeve limiting screw and a limiting block; the sleeve end of the sleeve limiting screw is disposed on the upper wedge mechanism, and its screw end passes through the through hole opened in the upper mold base to limit the maximum reset position of the upper wedge mechanism; the limiting block is fixedly mounted on the upper mold base and disposed in front of the punching movement direction of the upper wedge mechanism to limit the maximum working stroke of the upper wedge mechanism.

[0013] Preferably, the upper wedge mechanism is further provided with a first reset structure; the first reset structure includes a first reset nitrogen spring and two upper wedge forced reset members; the first reset nitrogen spring is arranged on the same side as the first punch and is used to drive the upper wedge mechanism to reset after the punching is completed.

[0014] Preferably, one end of each of the two upper inclined wedge forced reset members is fixedly installed on both sides of the drive end of the upper inclined wedge body; when the upper inclined wedge mechanism fails to reset normally, during the return stroke of the upper mold base, the upper inclined wedge forced reset member contacts the guide protrusions on both sides of the drive guide plate, thereby forcing the upper inclined wedge mechanism to reset with the upper mold base.

[0015] Preferably, the lower wedge mechanism is further provided with a second reset structure; the second reset structure includes a second reset nitrogen spring and two lower wedge forced reset members; the second reset nitrogen spring is arranged on the same side as the second punch and is used to drive the lower wedge mechanism to reset after punching is completed.

[0016] Preferably, one end of each of the two lower inclined wedge forced reset members is fixedly mounted on the lower inclined wedge and located on both sides of the driven inclined surface; the upper inclined wedge mechanism is provided with a sliding groove that cooperates with the lower inclined wedge forced reset member; when the lower inclined wedge mechanism fails to reset normally, during the return stroke of the upper mold base, the groove wall of the sliding groove contacts the lower inclined wedge forced reset member, thereby forcibly pulling the lower inclined wedge mechanism to reset.

[0017] Preferably, it also includes a guide assembly, which includes at least one pair of guide sleeves and guide posts; the guide sleeves and guide posts are respectively fixedly disposed on one side of the upper and lower mold bases, and are correspondingly disposed; when the upper mold base moves downward, the guide sleeves are sleeved on the guide posts to provide guidance for the upper mold base.

[0018] Preferably, the guiding assembly further includes a guide plate and a guide surface; the guide plate is installed on both sides of the guide sleeve, and the guide surface is correspondingly disposed on both sides of the guide post, the two cooperating with each other to guide the guide sleeve and the guide post to align and cooperate.

[0019] Preferably, the pressing core is further provided with a pad; the pad is installed on the side of the pressing core that contacts the elastic element and cooperates with the elastic element so that the downward pressure provided by the elastic element is evenly distributed on the sheet material.

[0020] As can be seen from the above description of this utility model, compared with the prior art, this utility model has the following beneficial effects:

[0021] (1) This utility model provides a mold structure with a double wedge punching assembly. Its structure is simple and easy to use. It can complete multi-angle punching in a dense space in one process, effectively reducing the number of processes and reducing production costs. This utility model adds an upper wedge mechanism and a lower wedge mechanism to the upper mold base and the lower mold base respectively. The front ends of the upper and lower wedges are respectively provided with a first and a second punch. The upper wedge mechanism is driven to move towards the sheet material by the drive guide plate on the lower mold base. The drive inclined surface on the upper wedge mechanism cooperates with the driven inclined surface on the lower wedge mechanism, thereby driving the lower wedge mechanism to move synchronously. This allows the first and second punches to complete the double-angle punching operation on the sheet material. Thus, the punching operation of two different angles can be completed simultaneously in one stamping process. This avoids the problems of low efficiency, high cost and positioning error caused by traditional multi-sequence production, and greatly improves production efficiency and product accuracy.

[0022] (2) This new type of device is equipped with a limit component and a double reset structure, which ensures the accuracy of the working stroke and the safety of operation of the double wedge punching component. Even if the reset spring fails, the mold can be safely reset by the forced reset component, preventing mold damage and improving the reliability and service life of the equipment.

[0023] (3) This new type of guide component and pressing structure optimizes the alignment of the upper and lower die bases and the uniform pressing of the sheet metal, ensuring that the sheet metal is subjected to uniform force during the punching process, effectively preventing sheet metal displacement, deformation or wrinkling, and ensuring the quality and accuracy of punching. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a three-dimensional structural diagram of the mold structure described in this utility model;

[0026] Figure 2 This is a three-dimensional structural diagram of the upper mold base described in this utility model;

[0027] Figure 3 This is a three-dimensional structural diagram of the lower mold base described in this utility model;

[0028] Figure 4 This is a three-dimensional structural diagram of the double-wedge punching assembly of this utility model;

[0029] Figure 5 This is a three-dimensional structural diagram of the upper inclined wedge mechanism described in this utility model;

[0030] Figure 6 This is a three-dimensional structural diagram of the lower inclined wedge mechanism described in this utility model;

[0031] Figure 7 This is a three-dimensional structural diagram of the pressing core described in this utility model;

[0032] The reference numerals in the attached drawings are explained as follows: 1. Upper die base; 2. Pressure core; 21. Pad block; 3. Elastic element; 4. Lower die base; 41. Lower punch insert; 42. Drive guide plate; 421. Guide protrusion; 5. Double wedge punching assembly; 51. Upper wedge mechanism; 511. Drive inclined surface; 512. First punch; 513. Slide groove; 514. First reset structure; 5141. First reset nitrogen spring; 5142. Upper wedge forced reset component; 52. Lower wedge mechanism; 521. Driven inclined surface; 522. Second punch; 523. Second reset structure; 5231. Second reset nitrogen spring; 5232. Lower wedge forced reset component; 6. Limiting assembly; 61. Sleeve limiting screw; 62. Limiting block; 7. Guide assembly; 71. Guide sleeve; 72. Guide post; 73. Guide plate; 74. Guide surface; 8. Sheet metal. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are preferred embodiments of the present utility model and should not be considered as excluding other embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0034] Unless otherwise expressly defined, the use of terms such as "first," "second," or "third" in the claims, description, and drawings of this utility model is for distinguishing different objects and not for describing a specific order.

[0035] Unless otherwise expressly defined, in the claims, description, and accompanying drawings of this utility model, the use of directional terms such as "center," "lateral," "longitudinal," "horizontal," "vertical," "top," "bottom," "inner," "outer," "upper," "lower," "front," "rear," "left," "right," "clockwise," and "counterclockwise" to indicate orientation or positional relationships is based on the orientation and positional relationships shown in the accompanying drawings and is only for the convenience of describing this utility model and simplifying the description. It does not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the specific protection scope of this utility model.

[0036] Unless otherwise expressly defined, the terms "fixed connection" or "fixed connection" used in the claims, description and drawings of this utility model shall be interpreted broadly, that is, any connection in which there is no displacement relationship or relative rotation relationship between the two parties, including non-removable fixed connection, detachable fixed connection, integral connection and fixed connection through other devices or components.

[0037] In the claims, description and drawings of this utility model, the terms "comprising", "having" and variations thereof are used to mean "including but not limited to".

[0038] See Figure 1-7 This embodiment provides a mold structure with a double wedge punching assembly, including an upper mold base 1, a lower mold base 4 and a double wedge punching assembly 5;

[0039] The upper die base 1 is provided with a pressure core 2 and an elastic element 3. The upper die base 1 is fixedly connected to the slide of the stamping machine tool and moves up and down reciprocally with the slide of the machine tool. The pressure core 2 is embedded in the upper die base 1 and moves up and down relative to the upper die base 1. The elastic element 3 is disposed between the upper die base 1 and the pressure core 2 to provide a constant and sufficient pressure force to the pressure core 2. A pad 21 is also installed on the contact surface between the pressure core 2 and the elastic element 3 to evenly distribute the pressure force of the elastic element 3 to the entire pressure core 2, so as to avoid the sheet metal 8 from being indented or deformed due to excessive local pressure.

[0040] The lower die base 4 is provided with a lower punch insert 41 and a drive guide plate 42. The lower die base 4 is fixed on the worktable of the stamping machine. The lower punch insert 41 is fixedly installed on the lower die base 4, and its position corresponds vertically to the blank holder 2. The two cooperate with each other to clamp and fix the sheet metal 8 before stamping. The drive guide plate 42 is fixedly installed on one side of the lower die base 4. Its working surface is set at an angle, and both sides are provided with guide protrusions 421 to drive the upper inclined wedge mechanism 51 in the double inclined wedge punching assembly 5 to move when the upper die base 1 moves downward.

[0041] The double wedge punching assembly 5 includes an upper wedge mechanism 51 and a lower wedge mechanism 52.

[0042] The upper inclined wedge mechanism 51 is installed in the upper mold base 1 through the first sliding guide plate; the right side of the upper inclined wedge mechanism 51 is the driving end, which corresponds to and cooperates with the driving guide plate 42. The front end is equipped with a first punch 512, and a driving inclined surface 511 is processed on the side that contacts the lower inclined wedge mechanism 52.

[0043] The lower wedge mechanism 52 is slidably mounted in the lower die base 4 via the second sliding guide plate; the right end face of the lower wedge mechanism 52 is machined with a driven inclined surface 521 that cooperates with the driving inclined surface 511; the front end of the lower wedge mechanism 52 is equipped with a second punch 522, and the center lines of the first and second punches 512 and 522 are set at an angle.

[0044] To prevent the upper wedge mechanism 51 from dislodging from the upper mold base 1, this embodiment provides a limiting component 6. The limiting component 6 includes a sleeve limiting screw 61 and a limiting block 62. The fixed end of the sleeve limiting screw 61 is disposed on the upper wedge mechanism 51, and its screw end passes through the through hole opened in the upper mold base 1. The length of the through hole limits the movement range of the upper wedge mechanism 51, thereby limiting the maximum reset position of the upper wedge mechanism 51. The limiting block 62 is fixedly mounted on the upper mold base 1 by screws and is located in front of the upper wedge mechanism 51 in the direction of movement, so as to abut against the body of the upper wedge mechanism 51, limit its maximum working stroke, and prevent overshoot.

[0045] Based on the above embodiments, the upper wedge mechanism 51 is further provided with a first reset structure 514; the first reset structure 514 includes a first reset nitrogen spring 5141 and two upper wedge forced reset members 5142; the first reset nitrogen spring 5141 is installed on the same side as the first punch 512 and is used to provide power after punching to drive the upper wedge mechanism 51 to reset; one end of the two upper wedge forced reset members 5142 is fixedly installed on both sides of the driving end of the upper wedge mechanism 51; when the first reset nitrogen spring 5141 fails and causes the upper wedge mechanism 51 to fail to reset normally, during the return stroke of the upper die holder 1, the upper wedge forced reset members 5142 will contact and be blocked by the guide protrusions 421 on both sides of the drive guide plate 42, thereby forcing the upper wedge mechanism 51 to reset along the guide protrusions 421.

[0046] The lower wedge mechanism 52 is further provided with a second reset structure 523. The second reset structure 523 includes a second reset nitrogen spring 5231 and a lower wedge forced reset member 5232. The second reset nitrogen spring 5231 is arranged on the same side as the second punch 522 so as to drive the lower wedge mechanism 52 to reset to the initial position when the upper wedge mechanism 51 resets upward. One end of the two lower wedge forced reset members 5232 is fixedly installed on the lower wedge mechanism 52 and located on both sides of the driven inclined surface 521. Correspondingly, the driving inclined surface 511 of the upper wedge mechanism 51 has grooves 513 formed on both sides that cooperate with the lower wedge forced reset members 5232. When the second reset nitrogen spring 5231 fails and the lower wedge mechanism 52 fails to reset normally, during the return stroke of the upper wedge mechanism 51, the groove wall of the groove 513 contacts the lower wedge forced reset member 5232, thereby forcibly driving the lower wedge mechanism 52 to reset.

[0047] In this embodiment, the mold structure further includes a guide assembly 7, which includes at least one pair of guide sleeves 71 and guide pillars 72. The guide sleeves 71 are press-fitted into the upper mold base 1, and the guide pillars 72 are fixedly installed in the lower mold base 4, with the two correspondingly arranged. When the upper mold base 1 moves downward, the guide sleeves 71 are sleeved on the guide pillars 72 to provide guidance for the upper mold base 1, further ensuring the mold closing accuracy. The guide assembly 7 also includes a guide plate 73 and a guide surface 74. The guide plate 73 is installed on both sides of the guide sleeves 71, and the guide surface 74 is formed on both sides of the guide pillars 72. When the guide sleeves 71 and guide pillars 72 initially contact each other, the guide plate 73 and guide surface 74 contact each other and guide each other to correct the alignment deviation and ensure that the guide sleeves 71 can be sleeved on the guide pillars 72.

[0048] The working principle and process of this utility model are as follows:

[0049] In the initial state, the upper die holder 1 is in the initial position, and the upper wedge mechanism 51 and the lower wedge mechanism 52 are in the initial position under the action of the first reset nitrogen spring 5141 and the second reset nitrogen spring 5231, respectively. The operator places the sheet metal 8 to be processed on the lower punch insert 41 of the lower die holder 4, ready for stamping.

[0050] The machine tool slide drives the upper die holder 1 to move downward. In the initial stage, the guide plate 73 and the guide surface 74 contact and guide each other to ensure that the guide post 72 can smoothly enter the guide sleeve 71. Then, the guide sleeve 71 is fitted on the guide post 72 to ensure that the upper die holder 1 and the lower die holder 4 are accurately aligned. As the upper die holder 1 continues to move downward, the pressure core 2 contacts the sheet metal 8, the elastic element 3 is compressed, and the pressure generated is evenly transmitted to the pressure core 2 through the pad block 21, thereby pressing the sheet metal 8 tightly on the lower punch insert 41 to prevent the sheet metal 8 from moving, deforming or vibrating during the punching process.

[0051] The upper mold base 1 continues to descend against the force of the elastic element 3. The driving end of the upper wedge mechanism 51 contacts the driving guide plate 42 on the lower mold base 4. Under the action of the driving guide plate 42, the upper wedge mechanism 51 moves towards the sheet metal 8, and the driving inclined surface 511 of the upper wedge mechanism 51 contacts and cooperates with the driven inclined surface 521 of the lower wedge mechanism 52 to drive the lower wedge mechanism 52 to move synchronously towards the sheet metal 8. During this process, the first reset nitrogen spring 5141 and the second reset nitrogen spring 5141... Both 231 are compressed; as the upper die holder 1 descends to the dead point, the upper inclined wedge mechanism 51 moves until its body abuts against the limiting block 62, thereby reaching the maximum working stroke. At this time, the first punch 512 installed at the front end of the upper inclined wedge mechanism 51 and the second punch 522 installed at the front end of the lower inclined wedge mechanism 52 simultaneously penetrate the compressed sheet 8, and the center lines of the first punch 512 and the second punch 522 form an angle. Therefore, in one process, two punching operations at different angles are completed simultaneously.

[0052] After the punching operation is completed, the machine tool slide begins to return, driving the upper die holder 1 to move upward. At this time, the compressed first reset nitrogen spring 5141 quickly releases energy, pushing the upper wedge mechanism 51 to move along the drive guide plate 42 to the side away from the sheet metal 8, so that the upper wedge mechanism 51 disengages from the drive guide plate 42 and returns to its initial position. At the same time, the compressed second reset nitrogen spring 5231 also releases energy, pushing the lower wedge mechanism 52 to the side away from the sheet metal 8, so that the lower wedge mechanism 52 resets.

[0053] If the first reset nitrogen spring 5141 fails unexpectedly, the upper wedge mechanism 51 will not be able to reset automatically. When the upper mold base 1 returns to the starting position, the upper wedge forced reset component 5142 fixed on the upper wedge mechanism 51 will rise accordingly and contact the guide protrusions 421 on both sides of the drive guide plate 42. During the rising process of the upper mold base 1, the upper wedge mechanism 51 is forced to reset along the guide protrusions 421 to avoid damage to the mold.

[0054] If the second reset nitrogen spring 5231 fails unexpectedly, the lower wedge mechanism 52 cannot automatically reset. During the return stroke of the upper mold base 1 and the reset of the upper wedge mechanism 51 to the side away from the sheet metal 8, the slide groove 513 on the upper wedge mechanism 51 also moves. At this time, the lower wedge forced reset member 5232 fixed on the lower wedge mechanism 52 is located in the slide groove 513. The upper groove wall of the slide groove 513 will contact the lower wedge forced reset member 5232 during the movement, apply force to the lower wedge mechanism 52, and thus forcibly pull the lower wedge mechanism 52 to reset.

[0055] Once the upper mold base 1 has returned to the top dead center, the operator can remove the processed sheet material 8, thus completing one work cycle.

[0056] This utility model provides a mold structure with a double-wedge punching assembly. Its structure is simple and easy to use, enabling multi-angle punching in a dense space to be completed in a single process, effectively reducing the number of processes and lowering production costs. This invention adds an upper wedge mechanism and a lower wedge mechanism to the upper and lower mold bases respectively, with a first and a second punch at the front ends of the upper and lower wedges respectively. The upper wedge mechanism is driven to move towards the sheet metal by a drive guide plate on the lower mold base. The driving inclined surface on the upper wedge mechanism cooperates with the driven inclined surface on the lower wedge mechanism, thereby driving the lower wedge mechanism to move synchronously, causing the first and second wedges to... The second punch completes the dual-angle punching operation on the sheet metal, thus enabling the simultaneous completion of two punching operations at different angles in a single stamping process. This completely avoids the inefficiency, high cost, and positioning errors associated with traditional multi-sequence production, significantly improving production efficiency and product precision. Furthermore, the new design incorporates a limiting component and a dual reset structure, ensuring the accuracy of the working stroke and operational safety of the double wedge punching assembly. Even in the event of a return spring failure, the forced reset component ensures safe mold reset, preventing mold damage and improving equipment reliability and service life.

[0057] The foregoing description of the specifications and embodiments is intended to explain the scope of protection of this utility model, but does not constitute a limitation on the scope of protection of this utility model. Modifications, equivalent substitutions, or other improvements to the embodiments of this utility model or a portion thereof that can be obtained by those skilled in the art through logical analysis, reasoning, or limited experimentation, based on the teachings of this utility model or the foregoing embodiments, should all be included within the scope of protection of this utility model.

Claims

1. A mold structure with a double-wedge punching assembly, characterized in that: Includes upper die base, lower die base and double wedge punching assembly; The upper mold base is provided with a pressure core and an elastic element; the pressure core is embedded in the upper mold base and provides downward pressure under the action of the elastic element; The lower die base is provided with a lower punch insert and a drive guide plate. The lower punch insert is correspondingly arranged with the blank holder core, and the two cooperate with each other to clamp and fix the sheet metal. The drive guide plate is installed on one side of the lower die base, and its working surface is inclined. Both sides are provided with guide protrusions to drive the double inclined wedge punching assembly to move when the upper die base moves downward. A double-wedge punching assembly includes an upper wedge mechanism and a lower wedge mechanism. The upper and lower wedge mechanisms are respectively mounted in an upper die base and a lower die base via sliding guide plates, and the driving end of the upper wedge mechanism is correspondingly arranged with the driving guide plate. The upper wedge mechanism is provided with a driving inclined surface, and the lower wedge mechanism is provided with a driven inclined surface that cooperates with the driving inclined surface. The front ends of the upper and lower wedge mechanisms are also provided with a first punch and a second punch, respectively, and the center lines of the first and second punches are arranged at an included angle. The upper die base moves downward, driving the upper wedge mechanism toward the lower die base and abutting against the drive guide plate, causing the upper wedge mechanism to move toward the sheet metal. The drive inclined surface cooperates with the driven inclined surface, thereby driving the lower wedge mechanism to move synchronously, so that the first and second punches complete the dual-angle punching operation on the sheet metal.

2. The mold structure with a double-wedge punching assembly as described in claim 1, characterized in that: The mold structure also includes a limiting component to prevent the upper wedge mechanism from disengaging from the upper mold base; the limiting component includes a sleeve limiting screw and a limiting block; the sleeve end of the sleeve limiting screw is disposed on the upper wedge mechanism, and its screw end passes through the through hole opened in the upper mold base to limit the maximum reset position of the upper wedge mechanism; the limiting block is fixedly mounted on the upper mold base and disposed in front of the punching movement direction of the upper wedge mechanism to limit the maximum working stroke of the upper wedge mechanism.

3. The mold structure with a double-wedge punching assembly as described in claim 2, characterized in that: The upper inclined wedge mechanism is also provided with a first reset structure; the first reset structure includes a first reset nitrogen spring and two upper inclined wedge forced reset members; the first reset nitrogen spring is arranged on the same side as the first punch and is used to drive the upper inclined wedge mechanism to reset after the punching is completed.

4. The mold structure with a double-wedge punching assembly as described in claim 3, characterized in that: One end of each of the two upper inclined wedge forced reset components is fixedly installed on both sides of the drive end of the upper inclined wedge body; when the upper inclined wedge mechanism fails to reset normally, during the return stroke of the upper mold base, the upper inclined wedge forced reset component contacts the guide protrusions on both sides of the drive guide plate, thereby forcing the upper inclined wedge mechanism to reset with the upper mold base.

5. The mold structure with a double-wedge punching assembly as described in claim 1, characterized in that: The lower wedge mechanism is also provided with a second reset structure; the second reset structure includes a second reset nitrogen spring and two lower wedge forced reset components; the second reset nitrogen spring is arranged on the same side as the second punch and is used to drive the lower wedge mechanism to reset after punching is completed.

6. The mold structure with a double-wedge punching assembly as described in claim 5, characterized in that: One end of each of the two lower inclined wedge forced reset members is fixedly mounted on the lower inclined wedge and located on both sides of the driven inclined surface; the upper inclined wedge mechanism has a sliding groove that cooperates with the lower inclined wedge forced reset member; when the lower inclined wedge mechanism fails to reset normally, during the return stroke of the upper mold base, the groove wall of the sliding groove contacts the lower inclined wedge forced reset member, thereby forcibly pulling the lower inclined wedge mechanism to reset.

7. The mold structure with a double-wedge punching assembly as described in claim 1, characterized in that: It also includes a guide assembly, which includes at least one pair of guide sleeves and guide posts; the guide sleeves and guide posts are respectively fixedly disposed on one side of the upper and lower mold bases, and are correspondingly disposed; when the upper mold base moves downward, the guide sleeves are sleeved on the guide posts to provide guidance for the upper mold base.

8. The mold structure with a double-wedge punching assembly as described in claim 7, characterized in that: The guiding assembly further includes a guide plate and a guide surface; the guide plate is installed on both sides of the guide sleeve, and the guide surface is correspondingly disposed on both sides of the guide post, the two cooperate with each other to guide the guide sleeve and the guide post to be aligned and engaged.

9. The mold structure with a double-wedge punching assembly as described in claim 1, characterized in that: The pressure core is also provided with a pad; the pad is installed on the side of the pressure core that contacts the elastic element and cooperates with the elastic element to evenly transmit the pressure of the elastic element to the pressure core.

Images