Profile flexible pre-punching die

Abstract

A flexible pre-punching die for profiles comprises a fixed die table and a movable die table arranged above the fixed die table in a liftable mode, a punched hole is formed in the upper side of the fixed die table, a stepped hole which penetrates through the movable die table in the vertical direction and is right opposite to the punched hole is formed in the movable die table, the diameter of the stepped hole is large in the upper portion and small in the lower portion so that a stepped face can be formed, and a punching column is inserted into the stepped hole in a sliding mode. The upper portion of the punching column is provided with a boss abutting against the upper side of the stepped face, the upper side of the movable die table is provided with a movable lock cover, the lock cover is used for opening or closing the upper end of the stepped hole, and when the lock cover closes the upper end of the stepped hole, the lower end of the punching column protrudes out of the lower side of the movable die table. According to the scheme, multiple sets of movable die tables do not need to be designed, cost is effectively reduced, adaptation to different batches of material belts can be achieved only by moving the lock cover, and operation is easy and convenient.

Description

Technical Field

[0001] This utility model relates to the technical field of stamping dies, and more specifically to a flexible pre-punching die for profiles. Background Technology

[0002] Stamping is a common metal processing method in the machining field. It typically includes a fixed die table and a moving die table. The moving die table has punches, and the fixed die table has punches. The punches and punches are positioned opposite each other. By feeding the strip of material between the moving and fixed die tables, the moving die table presses downward to punch the corresponding machining holes in the strip. This processing method is highly efficient and stable, and therefore has been widely used.

[0003] However, depending on the design requirements, the position and size of the processing holes to be punched out of the strip often vary. When processing different batches of strip, different moving die tables need to be changed, which means that multiple sets of moving die tables need to be designed. This not only increases the cost, but also requires disassembling and reassembling the moving die table every time the strip is changed, making the operation cumbersome. Utility Model Content

[0004] The purpose of this invention is to solve the problem that when processing different batches of material strip, different moving mold tables need to be replaced. This means that multiple sets of moving mold tables need to be designed, which is not only costly, but also requires disassembling and reassembling the moving mold tables every time the batch of material strip is changed, making the operation cumbersome.

[0005] To solve the above problems, this utility model provides a flexible pre-punching mold for profiles, including a fixed mold table and a movable mold table that can be lifted and lowered above the fixed mold table. The fixed mold table has a punch hole on its upper side, and the movable mold table has a stepped hole that runs vertically through and is directly opposite the punch hole. The diameter of the stepped hole is larger at the top and smaller at the bottom to form a stepped surface. A punch is slidably inserted into the stepped hole. The upper part of the punch has a boss that abuts against the upper side of the stepped surface. The upper side of the movable mold table has a movable locking cover. The locking cover is used to open or close the upper end of the stepped hole, and when the locking cover closes the upper end of the stepped hole, the lower end of the punch protrudes from the lower side of the movable mold table.

[0006] The above solution features stepped holes on the moving die table, with the punch designed to slide and insert into these holes. Multiple sets of stepped holes and punches can be designed on the moving die table as needed. According to the processing requirements of the strip, the locking cover is moved to the upper end of the corresponding stepped hole to close it. When the moving die table presses downwards, the lower end of the punch in the stepped hole whose upper end is closed by the locking cover protrudes from the lower side of the moving die table, achieving normal punching of the strip. The punches in the stepped holes whose upper ends are not closed by the locking cover move upwards due to the force of the strip and will not punch holes in the strip. Therefore, by changing the closing state of the locking cover on the upper end of different stepped holes, it can adapt to the processing requirements of different batches of strip, offering good versatility. Simultaneously, the presence of the stepped surface ensures that the punch will not detach downwards from the stepped hole. Compared with existing technologies, the above solution eliminates the need for multiple sets of moving die tables, effectively reducing costs. Furthermore, it only requires moving the locking cover to adapt to different batches of strip, making operation simple and convenient.

[0007] In an improved embodiment, when the boss abuts against the stepped surface, the upper end face of the punch is flush with the upper side of the moving mold table, thereby ensuring that when the locking cover closes the upper end of the stepped hole, the upper end face of the punch abuts against the locking cover, and the boss abuts against the stepped surface, ensuring the stability of the punch in the stepped hole at this time.

[0008] In an improved embodiment, a chamfer is provided between the side of the lock cover near the stepped hole and the lower side of the lock cover. As a result of the chamfer, the lock cover moves more smoothly towards the upper end of the stepped hole, and the chamfer can push the part of the punch protruding from the upper end of the stepped hole back into the stepped hole more smoothly.

[0009] In an improved embodiment, the upper side of the moving mold platform is provided with a guide rail passing through a stepped hole, and the locking cover is slidably connected to the guide rail, thereby ensuring that the movement of the locking cover on the upper side of the moving mold platform is more stable.

[0010] In an improved embodiment, a linear drive unit is also included, which is connected to the upper side of the moving mold table. The linear drive unit is arranged parallel to the guide rail. The locking cover is connected to the output end of the linear drive unit and is driven by the linear drive unit to open or close the upper end of the stepped hole. Thus, the locking cover is driven by the linear drive unit, which has a high degree of automation and requires no manual intervention.

[0011] In an improved embodiment, a linear drive unit is also included, connected to the upper side of the moving mold table. The locking cover is connected to the output end of the linear drive unit and driven by the linear drive unit to open or close the upper end of the stepped hole. Thus, the locking cover is driven by the linear drive unit, which has a high degree of automation and requires no manual intervention.

[0012] In an improved embodiment, the punch extends vertically through the fixed die table, and a collection frame is provided below the fixed die table to collect the waste material after stamping. Attached Figure Description

[0013] Figure 1 A schematic diagram of a flexible pre-punching die for profiles. Figure 1 ;

[0014] Figure 2 A schematic diagram of a flexible pre-punching die for profiles. Figure 2 (Cover plate 24 is hidden);

[0015] Figure 3 This is a top view schematic diagram of a flexible pre-punching die for a profile.

[0016] Figure 4 For along Figure 3 Schematic diagram of the cross section line AA in the middle.

[0017] Explanation of reference numerals in the attached figures.

[0018] 1. Fixed mold table; 11. Punching hole; 12. Material collection frame; 2. Moving mold table; 21. Stepped hole; 22. Stepped surface; 23. Guide rail; 24. Cover plate; 3. Punching column; 31. Boss; 4. Locking cover; 41. Chamfer; 5. Linear drive component. Detailed Implementation

[0019] It should be understood by those skilled in the art that the following embodiments are merely illustrative of the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0020] In the following description of the embodiments, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0021] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0022] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0023] Please see Figures 1-4 The present invention provides a flexible pre-punching mold for profiles, comprising a fixed mold platform 1 and a movable mold platform 2 which is liftably disposed above the fixed mold platform 1. The fixed mold platform 1 has a punch 11 on its upper side, and the movable mold platform 2 has a stepped hole 21 that runs vertically through and is directly opposite the punch 11. The diameter of the stepped hole 21 is larger at the top and smaller at the bottom to form a stepped surface 22. A punch 3 is slidably inserted into the stepped hole 21. The upper part of the punch 3 has a boss 31 that abuts against the upper side of the stepped surface 22. The movable mold platform 2 has a movable locking cover 4 on its upper side. The locking cover 4 is used to open or close the upper end of the stepped hole 21, and when the locking cover 4 closes the upper end of the stepped hole 21, the lower end of the punch 3 protrudes from the lower side of the movable mold platform 2.

[0024] The above scheme sets a stepped hole 21 on the moving mold table 2 and designs the punch 3 to slide into the stepped hole 21. Multiple sets of stepped holes 21 and punch 3 can be designed on the moving mold table 2 as needed. According to the processing requirements of the strip, the locking cover 4 is moved to the upper end of the corresponding stepped hole 21 to close it. So when the moving mold table 2 presses down, the lower end of the punch 3 in the stepped hole 21 whose upper end is closed by the locking cover 4 protrudes out of the lower side of the moving mold table 2, realizing the normal punching 11 processing of the strip. The punch 3 in the stepped hole 21 whose upper end is not closed by the locking cover 4 moves upward due to the force of the strip and will not punch 11 on the strip. Thus, by changing the closing state of the upper end of the stepped hole 21 of the locking cover 4, it can adapt to the processing requirements of different batches of strips, with good versatility. At the same time, the existence of the stepped surface 22 ensures that the punch 3 will not come out from the stepped hole 21 downward. Compared with existing technologies, the above solution does not require the design of multiple moving mold tables 2, which effectively reduces costs. Moreover, it only requires moving the locking cover 4 to adapt to different batches of material strips, making the operation simple and convenient.

[0025] In this embodiment, the height of the boss 31 is designed to be equal to the distance between the stepped surface 22 and the upper side of the moving mold platform 2. Thus, when the boss 31 abuts against the stepped surface 22, the upper end face of the punch 3 is flush with the upper side face of the moving mold platform 2. This ensures that when the locking cover 4 closes the upper end of the stepped hole 21, the upper end face of the punch 3 abuts against the locking cover 4, and the boss 31 abuts against the stepped surface 22, ensuring the stability of the punch 3 in the stepped hole 21 at this time.

[0026] As an improvement to this embodiment, a chamfer 41 is provided between the side of the lock cover 4 near the stepped hole 21 and the lower side of the lock cover 4. As a result of the presence of the chamfer 41, the lock cover 4 moves more smoothly towards the upper end of the stepped hole 21, and the chamfer 41 can push the part of the punch 3 protruding from the upper end of the stepped hole 21 back into the stepped hole 21 more smoothly.

[0027] Furthermore, the upper side of the moving mold platform 2 is provided with a guide rail 23 passing through the stepped hole 21. In this embodiment, the guide rail 23 has a groove-like structure, and the lock cover 4 is slidably connected to the guide rail 23, thereby ensuring that the movement of the lock cover 4 on the upper side of the moving mold platform 2 is more stable. The upper side of the moving mold platform 2 can be covered with a cover plate 24 to achieve vertical limitation of the lock cover 4. Of course, the vertical limitation of the lock cover 4 can also be achieved by designing the guide rail 23 as a dovetail groove or a T-groove.

[0028] Furthermore, it also includes a linear drive 5 connected to the upper side of the moving mold table 2. The linear drive 5 can be a pneumatic cylinder, a hydraulic cylinder, or an electric cylinder. The linear drive 5 is set parallel to the guide rail 23. The locking cover 4 is connected to the output end of the linear drive 5, so that the locking cover 4 is driven to move back and forth along the guide rail 23 through the linear drive 5, thereby opening or closing the upper end of the stepped hole 21. The degree of automation is high and no manual intervention is required.

[0029] As another improvement to this embodiment, the punch 11 penetrates the fixed mold table 1 vertically, and a material collection frame 12 is provided below the fixed mold table 1, so as to collect the waste material after stamping through the material collection frame 12.

[0030] The lifting and lowering of the moving mold platform 2 is driven by an external cylinder or hydraulic cylinder, which is existing technology and will not be described in detail here.

[0031] It should be noted that in the description of this application, the terms "inner" and "outer," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application. All directional indications (such as up, down, left, right, front, back, inner, and outer) are only used to explain the relative positional relationships and movement between components in a specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0032] In the description of this application, the references to terms such as "an embodiment," "some embodiments," "in this embodiment," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0033] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A flexible pre-punching die for profiles, characterized in that, The device includes a fixed mold platform (1) and a movable mold platform (2) that can be raised and lowered above the fixed mold platform (1). The fixed mold platform (1) has a punch hole (11) on its upper side. The movable mold platform (2) has a stepped hole (21) that runs vertically through the punch hole (11) and is directly opposite to the punch hole (11). The diameter of the stepped hole (21) is larger at the top and smaller at the bottom to form a stepped surface (22). A punch (3) is slidably inserted into the stepped hole (21). The upper part of the punch (3) has a boss (31) that abuts against the upper side of the stepped surface (22). The movable mold platform (2) has a movable locking cover (4) on its upper side. The locking cover (4) is used to open or close the upper end of the stepped hole (21). When the locking cover (4) closes the upper end of the stepped hole (21), the lower end of the punch (3) protrudes from the lower side of the movable mold platform (2).

2. The flexible pre-punching die for profiles according to claim 1, characterized in that, When the boss (31) abuts against the stepped surface (22), the upper end face of the punch (3) is flush with the upper side face of the moving mold table (2).

3. The flexible pre-punching die for profiles according to claim 2, characterized in that, A chamfer (41) is provided between the side of the lock cover (4) near the stepped hole (21) and the lower side of the lock cover (4).

4. The flexible pre-punching die for profiles according to any one of claims 1-3, characterized in that, The upper side of the moving mold platform (2) is provided with a guide rail (23) passing through a stepped hole (21), and the lock cover (4) is slidably connected to the guide rail (23).

5. The flexible pre-punching die for profiles according to claim 4, characterized in that, It also includes a linear drive (5) connected to the upper side of the moving mold table (2), the linear drive (5) being arranged parallel to the guide rail (23), and the lock cover (4) being connected to the output end of the linear drive (5) and driven by the linear drive (5) to open or close the upper end of the stepped hole (21).

6. The flexible pre-punching die for profiles according to any one of claims 1-3, characterized in that, It also includes a linear drive (5) connected to the upper side of the moving mold platform (2), and the lock cover (4) is connected to the output end of the linear drive (5) and driven by the linear drive (5) to open or close the upper end of the stepped hole (21).

7. The flexible pre-punching die for profiles according to claim 1, characterized in that, The punch (11) penetrates the fixed mold table (1) vertically, and a material collection frame (12) is provided below the fixed mold table (1).

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