A punching die with easy mold replacement

Abstract

This utility model discloses a punching die with easy mold replacement, relating to the field of punching dies. It includes: a mounting column, an open stud threadedly connected to the bottom of the mounting column, a punching die head rotatably connected between the open stud and the mounting column, and a positioning pin inserted into one end of the punching die head, the positioning pin being threadedly connected to the mounting column. This easily replaceable punching die forms an ingenious combination structure through the threaded connection between the bottom of the mounting column and the open stud, the rotatable connection between the punching die head and the open stud, the insertion and engagement of the punching die head and the positioning pin, and the threaded connection between the positioning pin and the mounting column. This design allows operators to quickly disassemble and install the die head without the need for complex tools and cumbersome procedures, simply through threaded rotation and component insertion, greatly improving the efficiency of die replacement and effectively solving the problem of inconvenient replacement of traditional punching dies.

Description

Technical Field

[0001] This utility model relates to the field of punching die technology, specifically a punching die with easy die replacement. Background Technology

[0002] As a key process equipment in the industrial manufacturing field, punching dies are used to process blanks of different materials and specifications (such as metal sheets, plastic parts, etc.) by relying on the pressure output by the press. The blanks are then formed into parts of specific shapes and sizes that meet the product design requirements. They are widely used in many industries such as automobile manufacturing, electronic components, and hardware accessories.

[0003] Under the current industrial production model, the market demand for personalized and diversified products continues to grow. Coupled with the accelerating pace of production process upgrades, production lines need to frequently switch between different types of products, directly leading to a significant increase in the replacement frequency of punching dies. However, the existing mainstream punching die fixing structure still primarily relies on bolt connections. During die assembly and disassembly, operators must use specialized tools such as wrenches and sockets to rotate each of the multiple bolts distributed around the die clockwise / counterclockwise until they are completely detached or tightened. This traditional fixing method is cumbersome.

[0004] In the prior art, Chinese utility model patent document with publication number CN221158282U proposes a punching die technology solution that facilitates die replacement. This solution, through the design of a separately replaceable upper die head structure, effectively avoids the cumbersome operation of traditional die-disassembly. Simultaneously, during the replacement of the upper die head, the connecting seat structure provides support, ensuring the stability of the upper die head during assembly and disassembly, preventing damage or safety accidents caused by accidental drops. This solution plays a positive role in improving operational safety and ease of assembly and disassembly.

[0005] However, a deeper analysis of this existing technical solution reveals several unresolved technical flaws: the fixing and limiting of the upper die head and the connecting seat relies on the threaded connection structure of the positioning screw, and the internal space of the mounting chamber (cavity) of the positioning screw is small. This structural design presents two problems: firstly, when adjusting the positioning screw, operators find it difficult to reach into the confined space with their hands or tools, making tightening and loosening the screw extremely inconvenient and resulting in low disassembly and assembly efficiency; secondly, during the high-intensity, high-frequency impact operations of stamping equipment, the positioning screw must continuously withstand longitudinal impact forces, and the threaded contact surface is prone to stress concentration, leading to screw tooth deformation, metal adhesion, and other phenomena. Prolonged use can cause the screw rotation to become obstructed, and in severe cases, even cause the screw to jam, further increasing the difficulty of mold replacement and failing to fundamentally solve the core pain point of inconvenient traditional mold disassembly and assembly.

[0006] Therefore, in view of the shortcomings of the existing technology, there is an urgent need to provide a new punching die technology solution with easy mold replacement, so as to break through the limitations of the current structural design and achieve simultaneous improvement in mold assembly and disassembly efficiency, positioning accuracy and structural stability.

[0007] Therefore, a punching die that is easy to replace is provided. Utility Model Content

[0008] To address the shortcomings of existing technologies, this utility model provides a punching die with easily replaceable molds, thereby solving the problems mentioned in the background art.

[0009] To achieve the above objectives, this utility model is implemented through the following technical solution: a punching die with easy mold replacement, comprising a mounting column, an open stud threaded to the bottom of the mounting column, a punching die head rotatably connected between the open stud and the mounting column, and a positioning pin inserted and fitted at one end of the punching die head, the positioning pin being threadedly connected to the mounting column.

[0010] Preferably, the inner wall of the mounting column is provided with multiple grooves, which are arranged in a ring-shaped and equally spaced structure and are engaged with the punching die head.

[0011] Preferably, one side of the open stud is embedded with multiple balls.

[0012] Preferably, the punching die includes a replaceable punching rod, one end of which has an installation groove. A limit ring is threaded into the installation groove, and the limit ring is rotatably engaged with a matching groove post in the installation groove. The matching groove post is inserted into and engaged with a positioning post, and a spring is provided between the matching groove post and the installation groove.

[0013] Preferably, one end of the fitting groove column is fixedly connected to a frustum column, and one side of the frustum column is frictionally connected to a snap-fit ​​ball in an annular, equally spaced structure. The snap-fit ​​ball is limited to the rolling displacement of the inclined groove inside the punching rod, and the snap-fit ​​ball fits into the groove inside the mounting column.

[0014] Preferably, the positioning post is arranged in a conical structure.

[0015] This utility model provides a punching die with easily replaceable molds. Compared with the prior art, it has the following advantages:

[0016] 1. This easily replaceable punching die features a cleverly designed combination structure formed by the threaded connection between the bottom of the mounting post and the open stud, the rotatable connection between the punching die head and the open stud, the insertion and engagement of the punching die head and the positioning post, and the threaded connection between the positioning post and the mounting post. This design allows operators to quickly disassemble and install the die head without the need for complex tools and cumbersome procedures, simply by rotating the thread and inserting the components. This significantly improves the efficiency of die replacement and effectively solves the problem of inconvenient replacement of traditional punching dies.

[0017] 2. This easy-to-replace punching die uses an annular, equally spaced groove on the inner wall of the mounting column to engage with the punching die head, providing precise positioning and initial fixation for the punching die head. This ensures that the die will not rotate or shift during installation, thereby guaranteeing the stability of the die position during the stamping process and reducing the risk of die damage due to installation deviations. Attached Figure Description

[0018] Figure 1 This is a cross-sectional view of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 3 This is a half-sectional schematic diagram of the mounting column structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the open stud structure of this utility model;

[0022] Figure 5 This is a half-sectional schematic diagram of the punching die head structure of this utility model;

[0023] Figure 6 This is a half-sectional schematic diagram of the fitting groove column structure of this utility model.

[0024] In the diagram: 1. Mounting post; 2. Open stud; 3. Punching die head; 4. Positioning post; 11. Groove; 21. Ball bearing; 31. Punching rod; 32. Limiting ring; 33. Fitting groove post; 34. Spring component; 35. Frustum column; 36. Snap-fit ​​ball. Detailed Implementation

[0025] 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 only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, other embodiments obtained by those of ordinary skill in the art without creative effort are all within the scope of protection of the present utility model.

[0026] Please see Figure 1-3 This utility model provides a technical solution: a punching die with easy mold replacement, including a mounting column 1, an open stud 2 threadedly connected to the bottom of the mounting column 1, a punching die head 3 rotatably connected between the open stud 2 and the mounting column 1, and a positioning column 4 inserted and fitted at one end of the punching die head 3, the positioning column 4 being threadedly connected to the mounting column 1.

[0027] At this point, it is worth noting that the bottom of the mounting column 1 is connected to the open stud 2 via a threaded connection, and the two are rotatably connected to the punching die 3. One end of the punching die 3 is inserted into the positioning column 4, which is in turn threadedly connected to the mounting column 1. This design, through the combination of threaded connection and insertion engagement, enables convenient disassembly, assembly, and replacement of the punching die.

[0028] like Figure 3 and Figure 1 The inner wall of the mounting column 1 has multiple grooves 11, which are arranged in a ring with equal spacing and are engaged with the punching die head 3.

[0029] At this point, it is worth noting that the groove 11 structure design of the mounting column 1 can accurately position and initially fix the installed punching die 3, ensuring the stability of the installation position of the punching die 3, preventing it from rotating and shifting during the spiral limiting process, and reducing subsequent problems caused by installation deviation.

[0030] like Figure 4 and Figure 1 Multiple balls 21 are embedded on one side of the open stud 2.

[0031] At this point, it is worth noting that the ball bearings 21 on the open stud 2 make it easier to rotate the open stud 2 when installing or removing the punching die head 3, reducing friction and lowering the labor intensity of the operator. At the same time, it can also avoid structural damage that may be caused by excessive force when rotating the open stud 2, thus improving the convenience of operation and the stability of the structure.

[0032] like Figure 5 and Figure 6 The punching die head 3 includes a replaceable punching rod 31. One end of the punching rod 31 has an installation groove. A limit ring 32 is threadedly connected in the installation groove. The limit ring 32 is rotatably engaged with a matching groove post 33 in the installation groove. The matching groove post 33 is inserted into and engaged with a positioning post 4. A spring 34 is provided between the matching groove post 33 and the installation groove. A frustum post 35 is fixedly connected to one end of the matching groove post 33. A snap-fit ​​ball 36 is frictionally connected to one side of the frustum post 35 in an annular, equally spaced structure. The snap-fit ​​ball 36 is limited to the rolling displacement of the inclined groove in the punching rod 31 and engages with the groove 11 in the mounting post 1.

[0033] At this point, it is worth noting that the replaceable punch rod 31 design eliminates the need to replace the entire punching die 3 when the punch rod 31 wears or is damaged, reducing maintenance and time costs. Simultaneously, the cooperation of the limiting ring 32, the engaging groove post 33, and the spring 34 effectively buffers the impact force during the stamping process while ensuring structural stability, extending the die's service life. The structural design of the frustum post 35 and the snap-fit ​​ball 36 further enhances the connection stability between the punching die 3 and the mounting post 1. During installation, the snap-fit ​​ball 36 rolls along the inclined groove inside the punch rod 31, automatically engaging with the groove 11 inside the mounting post 1, achieving precise positioning and a tight connection, preventing displacement of the punching die 3 during the stamping process.

[0034] like Figure 3 The positioning column 4 is set in a conical structure.

[0035] At this point, it is worth noting that the conical structure of the positioning post 4 can play a good guiding role when it is inserted into the mating groove post 33 of the punching die head 3, which facilitates quick and accurate installation. At the same time, the conical structure can also make the fit between the positioning post 4 and the mating groove post 33 tighter, improve the positioning accuracy, and ensure the stability of the stamping process.

[0036] During operation or use, and during installation, first thread the positioning pin 4 onto the mounting pin 1. Because the positioning pin 4 has a conical structure, it provides good guidance during installation, facilitating accurate installation.

[0037] Next, the fitting groove post 33 of the punching die head 3 is aligned with the positioning post 4 and inserted. As the open stud 2 is threadedly connected to the bottom of the mounting post 1, the punching die head 3 is rotatably connected between the open stud 2 and the mounting post 1. By rotating the open stud 2, the punching die head 3 is further tightened so that it abuts and is limited to the top of the mounting post 1.

[0038] At this time, the fitting groove post 33 and the positioning post 4 are inserted and matched. During the insertion process, the fitting groove post 33 is elastically displaced by the positioning post 4, which causes the frustum post 35 fixed at one end to squeeze the locking ball 36. The locking ball 36 rolls along the inclined groove inside the punching rod 31 and fits with the groove 11 inside the mounting post 1, thus completing the positioning of the punching die head 3 and the mounting post 1.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, 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. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A punching die with easily replaceable mold, characterized in that, include: The mounting column (1) has an open stud (2) threadedly connected to its bottom. A punching die (3) is rotatably connected between the open stud (2) and the mounting column (1). A positioning pin (4) is inserted and fitted at one end of the punching die (3). The positioning pin (4) is threadedly connected to the mounting column (1).

2. The punching die with easy mold replacement according to claim 1, characterized in that: The inner wall of the mounting column (1) is provided with a plurality of grooves (11), which are arranged in an annular and equally spaced structure and are engaged with the punching die head (3).

3. A punching die with easily replaceable mold as described in claim 1, characterized in that: The open stud (2) has multiple balls (21) embedded on one side.

4. A punching die with easily replaceable mold as described in claim 1, characterized in that: The punching die (3) includes a replaceable punching rod (31). One end of the punching rod (31) is provided with a mounting groove. A limit ring (32) is threaded into the mounting groove. The limit ring (32) is rotatably engaged with a fitting groove post (33) in the mounting groove. The fitting groove post (33) is inserted into the positioning post (4). A spring element (34) is provided between the fitting groove post (33) and the mounting groove.

5. A punching die with easily replaceable mold according to claim 4, characterized in that: One end of the fitting groove column (33) is fixedly connected to a frustum column (35). A snap-fit ​​ball (36) is frictionally connected to one side of the frustum column (35) in an annular, equally spaced structure. The snap-fit ​​ball (36) is limited to the rolling displacement of the inclined groove in the punching rod (31), and the snap-fit ​​ball (36) fits into the groove (11) in the mounting column (1).

6. A punching die with easily replaceable mold according to claim 1, characterized in that: The positioning column (4) is arranged in a conical structure.

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