A plastic mould

Abstract

The utility model discloses a shaping die, including tool holder, is set up along its length direction extension's cutter installation groove on tool holder, the symmetrical strip -shaped clamping groove is seted up to the two -sided wall of cutter installation groove inner chamber, two strip -shaped clamping grooves all can detachably fixedly installed with shaping cutter, the blade of shaping cutter sets up to downward, and the blade shape of shaping cutter is matched with the profile of the part to be processed. Be provided with T -shaped piece between two shaping cutters. The utility model overcomes the insufficient of prior art, through the shaping cutter design of modularization detachable, has realized quick replacement and flexible adaptation, has reduced maintenance cost and downtime greatly, and T -shaped piece effectively avoids the part interference, and provides the direction support, ensures shaping accuracy and die life.

Description

Technical Field

[0001] This utility model relates to the field of machining mold technology, specifically to a shaping mold. Background Technology

[0002] In the field of mechanical manufacturing, especially in the production of metal stamping parts in industries such as automobiles, electronics, and home appliances, after processes such as drawing, punching, and bending, the contour shape of the parts often exhibits problems such as dimensional deviations, springback deformation, or residual burrs, making it difficult to fully meet the requirements of the design drawings. To solve these problems, it is usually necessary to use forming dies to perform final finishing processing on specific edges or contours of the parts to ensure their dimensional accuracy and shape consistency.

[0003] Currently, most traditional forming dies widely used in the industry are of an integral structure. Their forming components (such as forming blades) are typically fixed to the die base (lower die holder or upper blade holder) through welding or integral machining. While this integrated design is structurally robust, the forming components, being vulnerable parts of the die, inevitably experience wear, chipping, or even plastic deformation on their cutting edges or working surfaces after prolonged and frequent compression contact with high-strength sheet metal. Once the wear reaches a certain level, the forming accuracy cannot be guaranteed, leading to part scrap. Because the forming components of traditional dies are not replaceable, repairs often require disassembling the entire die from the press for complex on-site regrinding or returning it to the die workshop for rework. If the wear is severe enough to be irreparable, the entire die module must be replaced, resulting not only in expensive manufacturing or procurement costs but also prolonged production line downtime, severely impacting production efficiency and delivery cycles. Secondly, as the market moves towards smaller batches and more diverse products, production lines need the ability to quickly switch between producing different specifications of parts. However, traditional integral forming dies are designed specifically for the contours of particular parts, and the shape of their forming components is fixed. When a different part needs to be produced, the entire set of molds must be replaced and a new set of corresponding molds installed. This switching process is time-consuming and labor-intensive, and companies need to pre-manufacture and stock a large number of complete sets of molds of different specifications, which occupies a lot of capital, space and management resources, and greatly limits the flexible production capacity of the production line. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a shaping mold that overcomes these deficiencies. Its reasonable design, through a modular and detachable shaping blade, enables rapid replacement and flexible adaptation, significantly reducing maintenance costs and downtime. The T-block effectively prevents interference between parts and provides guiding support, ensuring shaping accuracy and mold lifespan.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A shaping mold includes a tool holder with a cutting tool mounting groove extending along its length. The inner walls of the cutting tool mounting groove are symmetrically provided with strip-shaped slots. A shaping tool can be detachably fixedly installed in each of the two strip-shaped slots. The cutting edge of the shaping tool is set downward, and the shape of the cutting edge of the shaping tool matches the contour of the part to be processed.

[0007] Preferably, a T-shaped block is provided between the two shaping blades. The T-shaped block includes an upper horizontal block and a lower vertical block that are integrally connected. The upper horizontal block is movably accommodated in the cutting blade mounting groove, and there is a preset distance between the upper surface of the upper horizontal block and the bottom of the cutting blade mounting groove to accommodate the clearance space of the end of the part to be processed. The lower vertical block extends downward and is located between the two shaping blades.

[0008] Preferably, the T-block is made of high-carbon steel or alloy structural steel, and the surface of the T-block is chrome-plated or nitrided.

[0009] Preferably, at least one through hole is provided on both sides of the tool holder, and a threaded hole corresponding to the through hole is provided on the side of the shaping tool. A locking member is provided in the through hole, and the end of the locking member passes through the through hole and is threadedly connected to the threaded hole.

[0010] Preferably, the cross-section of the strip groove is rectangular, trapezoidal, or dovetail-shaped.

[0011] This utility model provides a shaping mold with the following advantages: By detachably installing the shaping blade within the tool holder, the shaping blade functions as an independently detachable module. Therefore, when the shaping blade wears or is damaged due to long-term use, maintenance personnel do not need to disassemble the entire mold or use large equipment. They only need to remove the worn or damaged shaping blade from the slot and replace it with a new shaping blade with a matching cutting edge. This significantly reduces maintenance costs and downtime, and improves production efficiency. It also avoids the problem of traditional molds where localized wear leads to the scrapping of the entire module. It achieves precise and minimized maintenance costs. Simultaneously, the modular design makes the replacement and adaptation of the shaping blade more flexible. The tool holder can be used as a universal support platform. When the production line needs to switch to producing parts with different contours, the operator only needs to replace a set of corresponding shaping blades, allowing the same tool holder to adapt to the new production task. There is no need to replace the entire mold, significantly reducing mold development and manufacturing costs, and also greatly shortening product changeover time. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in this utility model or the prior art, the accompanying drawings used in the description of this utility model or the prior art will be briefly introduced below.

[0013] Figure 1 A schematic diagram of the structure of this utility model;

[0014] Figure 2 A schematic diagram of the structure of this utility model;

[0015] Figure 3 A schematic diagram of the cross-sectional structure of this utility model;

[0016] Explanation of the labels in the diagram:

[0017] 1. Tool holder; 2. Cutting tool mounting slot; 3. Strip slot; 4. Shaping tool; 5. T-block; 6. Through hole; 7. Threaded hole. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0019] Example 1, as Figure 1-3 As shown, a shaping mold includes a tool holder 1. The tool holder 1 has a cutting tool mounting groove 2 extending along its length. The inner walls of the cutting tool mounting groove 2 are symmetrically provided with strip-shaped slots 3. A shaping tool 4 is detachably fixedly installed in each of the two strip-shaped slots 3. The cutting edge of the shaping tool 4 is set downward, and the shape of the cutting edge of the shaping tool 4 matches the contour of the part to be processed.

[0020] Working principle:

[0021] In use, firstly, select a pair of shaping blades 4 with precisely matched cutting edges according to the contour shape of the part to be processed. Then, insert the backs of the shaping blades 4 into the strip-shaped slots 3 on both sides of the cutting tool mounting groove 2. The strip-shaped slots 3 provide initial radial positioning and constraint for the shaping blades 4, ensuring the positional accuracy of the shaping blades 4 perpendicular to the feed direction. Next, lock and fix the shaping blades 4, ensuring they are firmly locked onto the tool holder 1, overcoming the enormous lateral forces and vibrations generated during the shaping process, and preventing them from loosening or falling off.

[0022] Next, the part to be shaped is precisely positioned on the lower mold (or worktable), with its contour area directly below the cutting edges of the two shaping blades 4. The driving device (such as a press slide) moves the entire upper shaping mold's blade holder 1 downwards. As the blade holder 1 continues to press down, the cutting edges of the two shaping blades 4 simultaneously contact the two sides of the part's contour to be shaped. Under strong external pressure, the cutting edges of the shaping blades 4 precisely compress and plastically deform the part material, forcibly correcting the part's contour shape, eliminating defects such as springback and burrs, ensuring its final shape is highly consistent with the designed contour. After the shaping process is completed, the driving device moves the blade holder 1 upwards to reset, and the cutting edges of the shaping blades 4 separate from the formed part.

[0023] In this invention, by detachably mounting the shaping blade 4 within the blade holder 1, the shaping blade 4 becomes an independently detachable module. Therefore, when the shaping blade 4 wears or is damaged due to long-term use, maintenance personnel do not need to disassemble the entire mold or use large equipment. They only need to remove the worn or damaged shaping blade 4 from the strip slot 3 and replace it with a new shaping blade 4 with a matching cutting edge. This significantly reduces maintenance costs and downtime, and improves production efficiency. It also avoids the problem of traditional molds where localized wear leads to the scrapping of the entire module. This achieves precise and minimized maintenance costs.

[0024] Meanwhile, the modular design makes the replacement and adaptation of the shaping cutter 4 more flexible. The tool holder 1 can be used as a universal support platform. When the production line needs to switch to producing parts with different contours, the operator only needs to replace a set of corresponding shaping cutters 4, so that the same tool holder can adapt to the new production task. There is no need to replace the entire mold, which greatly reduces the mold development and manufacturing costs and also greatly shortens the product changeover time. This allows the production line to quickly respond to the market's demand for small-batch, multi-variety orders, significantly improving production flexibility and market competitiveness.

[0025] In Example 2, as a further preferred embodiment of Example 1, a T-shaped block 5 is provided between the two shaping blades 4. The T-shaped block 5 includes an upper horizontal block and a lower vertical block that are integrally connected. The upper horizontal block is movably accommodated in the cutting blade mounting groove 2, and there is a preset distance between the upper surface of the upper horizontal block and the bottom of the cutting blade mounting groove 2 to accommodate the clearance space of the end of the part to be processed. The lower vertical block extends downward and is located between the two shaping blades 4.

[0026] During assembly, the shaping blade 4 is first securely locked onto the blade holder 1. Then, the T-shaped block 5 is slid into the cutter mounting groove 2 from its side end, so that its upper horizontal block sits in the groove, and its lower vertical block hangs down naturally between the two shaping blades 4. At this time, a preset gap is maintained between the upper surface of the upper horizontal block of the T-shaped block 5 and the bottom of the cutter mounting groove 2. This gap constitutes a crucial "physical avoidance channel," which ensures that when the mold is pressed down, the upwardly protruding end of the workpiece has enough space to extend into this area, thereby completely avoiding rigid collision and interference between the end of the workpiece and the blade holder 1 body.

[0027] During the entire shaping process, when large, potentially asymmetrical lateral forces act on the shaping blade 4, the lower vertical block of the T-block 5 effectively resists and disperses these forces. The lower vertical block of the T-block 5 acts as an embedded guide rail, filling part of the gap between the two shaping blades 4. This effectively constrains any possible relative displacement, tilting, or torsional deformation of the two shaping blades 4, ensuring that they remain in the correct relative position. This guarantees that the shaping forces applied to both sides of the part are symmetrical and uniform. Consequently, it effectively ensures the final shaping accuracy and consistency of the part, effectively preventing parts from exceeding tolerances or being scrapped due to uneven force. Furthermore, the T-block 5 also effectively enhances the local rigidity of the cantilever area of ​​the tool holder 1, suppressing the elastic deformation of the tool holder and shaping blade under stress, further improving the stability of the shaping process and the service life of the mold.

[0028] In Example 3, as a further preferred embodiment of Example 1, the T-block 5 is made of high-carbon steel or alloy structural steel, and its surface is chrome-plated or nitrided. By using high-carbon steel or alloy structural steel, the T-block 5 possesses high strength and high hardness, effectively resisting the enormous lateral extrusion forces and impact loads generated during the forming process, preventing plastic deformation or fracture. It can also withstand cyclic stress impacts during production, improving the impact toughness and fatigue resistance of the T-block 5, avoiding batch quality accidents caused by deformation or failure of the T-block itself. Furthermore, chrome plating or nitriding significantly enhances the wear resistance of the T-block surface, enabling it to withstand friction for extended periods with almost no wear, ensuring the long-term stability of its guiding dimensions. The chrome plating or nitriding layer also gives the T-block surface a low coefficient of friction, making the sliding of the T-block within the mounting groove and its positioning between the two forming blades smoother, reducing "jamming" or "adhesion" phenomena. At the same time, it can more effectively balance lateral forces through minute adaptive adjustments during operation, which helps maintain the dynamic accuracy and stability of the entire shaping system.

[0029] In Example 4, as a further preferred embodiment of Example 1, at least one through hole 6 is provided on both sides of the tool holder 1, and a threaded hole 7 corresponding to the through hole is provided on the side of the shaping blade 4. A locking element is provided in the through hole 6, and the end of the locking element passes through the through hole 6 and is threadedly connected to the threaded hole 7. By setting the through holes 6 on both sides of the tool holder 1, maintenance personnel do not need to disassemble parts from above the mold or from complex structures. They only need to operate from the side of the tool holder and use a general-purpose tool (such as a wrench) to tighten or loosen the locking element to complete the fixing and release of the shaping blade. This lateral operation method greatly simplifies the process and minimizes replacement time. At the same time, the lateral locking method enables the shaping blade 4 to effectively resist the vertical and lateral impact forces and vibrations generated during the shaping process, preventing the shaping blade 4 from loosening, sinking, or shifting during operation, ensuring absolute safety and stability of the processing process. Furthermore, the locking force is evenly transmitted to the contact surface of the strip groove through the shaping blade body, forming a large-area pressure distribution. This significantly reduces stress concentration compared to point or line contact fixing methods, protecting the expensive shaping blade and preventing crushing deformation of the groove on the blade holder, thus extending the service life of the mold body.

[0030] In Example 5, as a further preferred embodiment of Example 1, the cross-section of the strip groove 3 is one of a rectangle, trapezoid, or dovetail shape. By adopting a rectangular, trapezoidal, or dovetail cross-section structure, the displacement of the forming tool in the lateral and vertical directions can be effectively limited, improving positioning accuracy and connection rigidity. Among them, the dovetail groove, due to its self-locking characteristics, can remain stable and not loosen even under high-intensity vibration, making it particularly suitable for high-load continuous production scenarios. Rectangular and trapezoidal structures are easy to process and assemble, suitable for frequent changeover conditions.

[0031] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A shaping mold, characterized in that: The tool holder (1) is provided with a cutting tool mounting groove (2) extending along its length. The inner walls of the cutting tool mounting groove (2) are symmetrically provided with strip-shaped slots (3). A shaping tool (4) can be detachably fixedly installed in each of the two strip-shaped slots (3). The cutting edge of the shaping tool (4) is set downward, and the shape of the cutting edge of the shaping tool (4) matches the contour of the part to be processed.

2. The shaping mold according to claim 1, characterized in that: A T-shaped block (5) is provided between the two shaping blades (4). The T-shaped block (5) includes an upper horizontal block and a lower vertical block that are integrally connected. The upper horizontal block is movably accommodated in the cutting blade mounting groove (2), and there is a preset distance between the upper surface of the upper horizontal block and the bottom of the cutting blade mounting groove (2) to accommodate the clearance space of the end of the part to be processed. The lower vertical block extends downward and is located between the two shaping blades (4).

3. A shaping mold according to claim 2, characterized in that: The T-shaped block (5) is made of high carbon steel or alloy structural steel, and the surface of the T-shaped block (5) is chrome-plated or nitrided.

4. A shaping mold according to claim 1, characterized in that: The tool holder (1) has at least one through hole (6) on both sides. The shaping tool (4) has a threaded hole (7) on its side corresponding to the through hole. A locking member is provided in the through hole (6). The end of the locking member passes through the through hole (6) and is threadedly connected to the threaded hole (7).

5. A shaping mold according to claim 1, characterized in that: The cross-section of the strip groove (3) is one of rectangle, trapezoid or dovetail.

Images