Forming die structure for pre-broken line of product

Abstract

The utility model discloses a forming die structure for a pre-broken line of a product, which comprises an upper backing plate, an upper clamping plate, a stripper plate, a lower die plate and a lower backing plate which are sequentially arranged from top to bottom, a punch is mounted on the upper clamping plate and penetrates through the stripper plate and the stripper plate downwards, a die core is mounted on the lower die plate, and the upper clamping plate is elastically connected with the stripper plate. Inserts are correspondingly installed in the middle of the lower end of the punch and the middle of the upper end of the die core, each insert is of a regular prism structure, each side edge of each insert comprises a line pressing part and a receding part, and the two receding parts are symmetrically arranged on the two sides of each line pressing part. The utility model has the beneficial effects that the position of a product is ensured to be fixed in the pre-broken line forming process, the punch forming quality of the pre-broken line is ensured, and the condition that parts are easily damaged due to the flowability of materials can be effectively prevented; the insert can be used for many times and can be rotated by a certain angle to be continuously used after being abraded, so that the cost is greatly saved, the maintenance time is shortened, and the production efficiency of products can be improved.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, specifically to a mold structure for pre-cutting product molding. Background Technology

[0002] With the development of society and the improvement of science and technology, people have begun to have a new understanding and appreciation of product aesthetics while ensuring quality. Product processes are constantly being optimized and becoming more and more complex. Therefore, continuous invention and innovation are needed in the manufacturing process. How to improve product quality, increase product aesthetics, optimize processes, save manufacturing costs, and improve production efficiency has become the core of enterprise competitiveness.

[0003] In the manufacturing process of some products, it is often necessary to press pre-broken wires onto a relatively thin strip. Conventional pre-broken structures (such as...) Figure 1-2 As shown, the process includes a stripper pre-cutting line set on the stripper plate, a stripper back plate fixed to the stripper plate, and a lower die pre-cutting line fixed on the lower die plate. During the entire forming process, initially, the stripper plate fixed to the pre-cutting line is in the open state. Under the drive of the punch press, a force is applied to the stripper back plate and the stripper plate. The stripper pre-cutting line first contacts the product and then continues to move downward. The stripper pre-cutting line, the product, and the lower die pre-cutting line are completely closed, completing the entire pre-cutting line forming process and the product is formed. However, the pre-cutting line forming process is completed without pressing the product down, so the product is prone to displacement during this process, which will affect the product appearance. The stripper pre-cutting line is easily damaged, increasing the frequency of machine downtime, increasing the number of parts repairs and manufacturing costs, reducing production efficiency, and intermittent burrs will appear after the product is broken. There are also problems such as difficulty in pre-cutting the product and excess material. Utility Model Content

[0004] The purpose of this utility model is to provide a mold structure for pre-cutting of product wires to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a mold structure for pre-cutting product molding, comprising, from top to bottom, an upper pad, an upper clamping plate, a backing plate, a stripping plate, a lower template, and a lower pad. A punch is mounted on the upper clamping plate, and the punch passes downward through the backing plate and the stripping plate. A mold core is mounted on the lower template. The upper clamping plate is elastically connected to the backing plate. Inserts are correspondingly mounted at the lower middle of the punch and the upper middle of the mold core. The inserts are regular prism structures, and each side edge includes a pressing part and a clearance part. The two clearance parts are symmetrically arranged on both sides of the pressing part.

[0006] Further preferably, both the punch and the die core have recessed mounting grooves on their end faces for mounting inserts, ensuring that the side edges of the inserts can extend out of the end face to perform pre-cutting stamping on the product; the inserts and the mounting grooves are tightly fitted to ensure the installation firmness of the inserts.

[0007] Further preferably, at least one of the two horizontal ends of the mounting groove on the punch extends through the side of the punch, facilitating the installation of the insert on the punch; at least one of the two horizontal ends of the mounting groove on the mold core extends through the side of the mold core, facilitating the installation of the insert on the mold core.

[0008] Further preferred, the insert is a regular square prism structure, which can be used four times, greatly improving the service life of the insert and saving costs; the mounting groove is a square slot structure, used to adapt the insert setting.

[0009] Further preferably, one of the sharp corners of the mounting groove is located at the opening, ensuring that the pressure line on the side edge of the insert is stamped and formed against the pre-broken line on the product; the other three sharp corners of the mounting groove are all connected to a horizontally set clearance groove, which is used to protect the other three side edges of the insert, prevent damage to the side edges of the insert, and facilitate the disassembly and assembly of the insert.

[0010] Further preferably, the clearance groove is an arc-shaped groove, which facilitates the installation and removal of the insert; both sides of the opening of the mounting groove are set with an arc-shaped surface structure, which facilitates the installation and removal of the insert and prevents scratches on the insert.

[0011] In a further preferred embodiment, the punch and the back plate are connected by a sliding fit, and the gap between the punch and the back plate is 0.004mm, ensuring that the punch can move relative to the back plate.

[0012] In a further preferred embodiment, the punch and the stripper plate are connected by a sliding fit, and the gap between the punch and the stripper plate is 0.004mm, ensuring that the punch can move relative to the stripper plate.

[0013] Beneficial Effects: This utility model's pre-cutting die structure for products, through the elastic connection of the back plate and the upper clamping plate, achieves clamping of the product by the stripper plate and the lower template, ensuring the product's fixed position during the pre-cutting process and guaranteeing the stamping quality of the pre-cut. It changes the traditional process of pre-cutting without pressing material to pressing material first, effectively preventing parts damage caused by material flowability. It also prevents difficulties in pre-cutting, excessive material, and intermittent burrs after breakage due to incorrect pre-cutting position. By adding an insert structure, the pre-cutting is pre-stamped onto the product. The insert can be used multiple times; when worn, it can be rotated to a certain angle for continued use, significantly saving costs and reducing maintenance time. It improves production efficiency and product quality, thus achieving lean manufacturing. This structure is stable and has superior mechanical logic, offering not only excellent performance and high production efficiency but also wide applicability to this type of product, making it highly valuable for application and promotion. Attached Figure Description

[0014] Figure 1 A schematic diagram of a conventional pre-cutting die structure disclosed in the background art of this utility model;

[0015] Figure 2 for Figure 1 Enlarged structural diagram at point A;

[0016] Figure 3 This is a schematic diagram of the structure of a product pre-cutting molding die disclosed in an embodiment of the present utility model.

[0017] Figure 4 for Figure 3 Enlarged structural diagram at point B;

[0018] Figure 5 This is a schematic diagram of the structure of the insert disclosed in the embodiments of this utility model;

[0019] Figure 6 This is a cross-sectional structural schematic diagram of the insert disclosed in the embodiment of this utility model;

[0020] Figure 7 This is a partial structural schematic diagram of the punch disclosed in the embodiment of this utility model;

[0021] Figure 8 This is a schematic diagram of the closed state structure of the product pre-cutting molding die structure disclosed in the embodiment of this utility model;

[0022] Figure 9 This is a schematic diagram of the mold opening state structure of the product pre-cutting forming mold structure disclosed in the embodiments of this utility model.

[0023] Reference numerals: 1-Upper pad, 2-Upper clamping plate, 3-Removing back plate, 4-Removing plate, 5-Lower template, 6-Lower pad, 7-Punch, 8-Mold core, 9-Insert, 91-Fitting part, 92-Clearing part, 10-Mounting groove, 101-Clearing groove, 102-Curved surface, 11-Product. Detailed Implementation

[0024] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0025] like Figure 3-9 As shown, a pre-cutting die structure for product is used to pre-cut thin strips on product 11. The pre-cutting die structure includes, from top to bottom, an upper pad 1, an upper clamping plate 2, a backing plate 3, a stripper plate 4, a lower template 5, and a lower pad 6. An upper die base is connected above the upper pad 1, and a punch press is connected through the upper die base. The lower pad 6 enables the installation and fixation of the pre-cutting die structure. The upper pad 1, upper clamping plate 2, backing plate 3, and stripper plate 4 form the upper die structure, and the lower template 5 and lower pad 6 form the lower die structure. The upper pad 1 and upper clamping plate 2 are fixedly connected and can move synchronously. The backing plate 3 and stripper plate 4 are fixedly connected, and the backing plate 3 is elastically connected to the upper clamping plate 2. When the mold is closed, due to the elastic connection between the back plate 3 and the upper clamping plate 2, the stripper plate 4 first contacts the product 11 and fixes it. Then, as the upper mold structure continues to descend, it realizes the pre-cutting of the product. This prevents the pre-cutting process from being completed without pressing the product 11, which would easily cause the product 11 to shift, resulting in incorrect pre-cutting position, difficulty in pre-cutting, and excess material after breaking. Furthermore, the product 11 is easily damaged, has an unqualified appearance, increases the frequency of downtime, affects production efficiency, and increases the probability of mold damage, increasing the number of mold repairs and costs. A punch 7 is installed on the upper clamping plate 2, and the punch 7 passes downward through the back plate 3 and the stripper plate 4. A mold core 8 is installed on the lower mold plate 5. The upper clamping plate 2 is used to install the punch 7, the upper pad 1 is used to limit and fix the punch 7, and the stripper plate 4 is used to fix the position of the product 11 and to achieve the stripping effect. The mold core 8 is used to cooperate with the punch 7 to realize the stamping of the product.

[0026] In this application, inserts 9 are installed at the lower center of the punch 7 and the upper center of the mold core 8, respectively. Each insert 9 has a regular prism structure, with each side edge containing a pressure part 91 and a clearance part 92. The two clearance parts 92 are symmetrically arranged on both sides of the pressure part 91. The inserts 9 on the punch 7 and the mold core 8 are used for pre-cutting stamping. The punch 7 presses downwards, causing the inserts 9 to move downwards. Finally, the inserts 9 on the punch 7 and the mold core 8 press against each other, achieving pre-cutting. The pressure parts 91 on the upper and lower inserts 9 squeeze each other, achieving pre-cutting during product forming. The clearance parts 92 are used to avoid contact with the product 11, preventing pressure on the product 11 and providing tolerance and compression space for pre-cutting. This reduces the appearance of intermittent burrs on one side after breakage due to compression misalignment.

[0027] In this application, both the punch 7 and the die core 8 have recessed mounting grooves 10 on their end faces for mounting inserts 9. The insert 9 is tightly fitted to the mounting groove 10, thus enabling its installation. The mounting groove 10 on the punch 7 is located on the lower end face of the punch 7, opening downwards to facilitate the insert 9 extending from the lower end face of the punch 7 and stamping the product 11. At least one of the two horizontal ends of the mounting groove 10 on the punch 7 penetrates the side of the punch 7, facilitating the installation of the insert 9, which is tightly fitted to the mounting groove 10 on the punch 7. The mounting groove 10 on the die core 8 is located on the upper end face of the die core 8, opening upwards to facilitate the insert 9 extending from the upper end face of the die core 8 and stamping the product 11. At least one of the two horizontal ends of the mounting groove 10 on the die core 8 penetrates the side of the die core 8, facilitating the installation of the insert 9, which is tightly fitted to the mounting groove 10 on the die core 8.

[0028] Based on the above scheme, insert 9 is a regular square prism structure. All four side edges of insert 9 can be used for pre-cutting the product's wires. When one side edge wears out, by rotating it 90 degrees, the other side edge of insert 9 can still be used for pre-cutting. Therefore, one insert 9 can be used four times through rotation, greatly saving costs and reducing maintenance time. Mounting slot 10 is a square slot structure used to fit insert 9. Once insert 9 is inserted into mounting slot 10, the insert 9 is fixed, eliminating the need for additional structures for fixation. Furthermore, insert 9 is not limited to a regular square prism structure; it can also be a regular triangular prism or a regular pentagonal prism structure.

[0029] Based on the above scheme, one of the sharp corners of the mounting groove 10 is located at the opening, ensuring that one side edge of the insert 9 can extend out of the mounting groove 10, thereby enabling the pre-cutting stamping of the product 11 through the side edge of the insert 9. The other three sharp corners of the mounting groove 10 are all connected to a horizontally set clearance groove 101, which facilitates the installation and removal of the insert 9 without damaging the four side edges of the insert 9.

[0030] Based on the above scheme, the clearance groove 101 is an arc-shaped groove, which is easy to process; both sides of the opening of the mounting groove 10 are set with arc-shaped surface structure, which is convenient for the installation and disassembly of the insert 9, and improves the structural strength of the opening of the mounting groove 10, while not scratching the insert 9.

[0031] In this application, the punch 7 and the stripper plate 3 are connected by a sliding fit, and the gap between the punch 7 and the stripper plate 3 is 0.004mm, which facilitates the sliding of the punch 7 relative to the stripper plate 3. That is, during the mold opening process, the stripper plate 3 can separate from the upper clamping plate 2 under the action of elasticity, so as to realize the movement reset of the stripper plate 3; during the mold closing process, when the stripper plate 4 is pressed against the product 11, the stripper plate 3 can be kept from moving downward with the stripper plate 4, while the punch 7 can continue to move downward with the upper pad plate 1 and the upper clamping plate 2.

[0032] In this application, the punch 7 and the stripper plate 4 are connected by a sliding fit, and the gap between the punch 7 and the stripper plate 4 is 0.004mm, which facilitates the sliding of the punch 7 relative to the stripper plate 4. That is, during the mold opening process, the stripper plate 4 can move relative to the punch 7 together with the stripper plate 3 under the action of the stripper plate 3, so as to realize the movement and reset of the stripper plate 4. During the mold closing process, after the stripper plate 4 is pressed against the product 11, the punch 7 can continue to move downward relative to the stripper plate 4 to realize the pre-cut stamping forming.

[0033] In this application, the working process of the pre-cutting forming mold structure is as follows: Under the action of the punch, the upper pad 1, upper clamping plate 2, stripper plate 3, stripper plate 4, punch 7 and the insert 9 installed on the punch 7 move downward synchronously. The stripper plate 4 contacts the product 11 first, and as the upper mold structure continues to move downward, it presses the product 11 against the lower template 5. As the upper pad 1, upper clamping plate 2 and punch 7 continue to move downward, the punch 7 and the insert 9 on it apply extrusion force to the product 11. The pressing part 91 on the lowest side edge of the insert 9 on the punch 7 and the pressing part 91 on the highest side edge of the insert 9 on the mold core 8 jointly press the two downward sides of the same part of the product 11, thereby realizing the pre-cutting forming of the product 11.

[0034] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A pre-cutting die structure for products, comprising, from top to bottom, an upper pad (1), an upper clamping plate (2), a backing plate (3), a stripper plate (4), a lower template (5), and a lower pad (6), wherein a punch (7) is mounted on the upper clamping plate (2), the punch (7) passing downward through the backing plate (3) and the stripper plate (4), and a die core (8) is mounted on the lower template (5), characterized in that: The upper clamping plate (2) is elastically connected to the back plate (3). The middle of the lower end of the punch (7) and the middle of the upper end of the mold core (8) are respectively equipped with inserts (9). The inserts (9) are regular prism structures, and each side edge of the inserts includes a pressure line part (91) and a clearance part (92). The two clearance parts (92) are symmetrically arranged on both sides of the pressure line part (91).

2. The structure of a pre-cutting mold for product forming according to claim 1, characterized in that: The end faces of the punch (7) and the mold core (8) are provided with recessed mounting grooves (10) for mounting the insert (9), and the insert (9) and the mounting groove (10) are tightly fitted together.

3. The structure of a product pre-cutting forming mold according to claim 2, characterized in that: At least one of the two horizontal ends of the mounting groove (10) on the punch (7) penetrates the side of the punch (7), and at least one of the two horizontal ends of the mounting groove (10) on the mold core (8) penetrates the side of the mold core (8).

4. The structure of a product pre-cutting forming mold according to claim 3, characterized in that: The insert (9) is a regular square prism structure, and the mounting groove (10) is a square slot structure.

5. The structure of a pre-cutting mold for product forming according to claim 4, characterized in that: One of the sharp corners of the mounting groove (10) is located at the opening, and the other three sharp corners of the mounting groove (10) are all connected to a horizontally arranged clearance groove (101).

6. The structure of a pre-cutting mold for product forming according to claim 5, characterized in that: The clearance groove (101) is an arc-shaped groove, and the two sides of the opening of the mounting groove (10) are both set with an arc-shaped surface structure.

7. The structure of a product pre-cutting forming mold according to claim 1, characterized in that: The punch (7) and the back plate (3) are connected by a sliding fit, and the gap between the punch (7) and the back plate (3) is 0.004 mm.

8. The structure of a pre-cutting mold for product forming according to claim 1, characterized in that: The punch (7) and the stripper plate (4) are connected by a sliding fit, and the gap between the punch (7) and the stripper plate (4) is 0.004 mm.

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