Die beneficial to hot bending of product

Abstract

The utility model discloses a die beneficial to hot bending of a product, and relates to the technical field of dies, the die comprises a power assembly, an upper die assembly and a lower die assembly, the power assembly is used for driving the upper die assembly to move up and down, the upper die assembly comprises an upper die plate and a hot pressing head arranged below the upper die plate, and the lower die assembly is used for driving the upper die assembly to move up and down. The hot pressing head is used for hot pressing of a product, the lower die assembly comprises a lower die plate, and a forming groove matched with the product in shape is formed in the lower die plate. The upper die assembly further comprises an auxiliary forming boss arranged on the edge of the hot pressing head, an auxiliary forming groove matched with the auxiliary forming boss is formed in the edge of the forming groove of the lower die assembly, and the auxiliary forming boss and the auxiliary forming groove are mutually embedded during die assembly. The auxiliary forming boss and the auxiliary forming groove are mutually embedded and matched with the positioning effect of the positioning salient points on the product, so that the edge of the product can be effectively restrained, the hot bending forming precision and quality of the product are improved, and the deformation of the edge of the product is reduced.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, specifically to a mold that facilitates hot bending of products. Background Technology

[0002] With the increasing demands for product appearance and functionality in the manufacturing industry, thermoforming technology is widely used in fields such as 3C products and automotive interior parts. The thermoforming mold, as the core equipment of this process, uses heating and pressure to cause plastic deformation of the material within the mold cavity, thereby forming the product. Among these technologies, in-mold insert (IML) technology has attracted considerable attention because it can impart multiple functions such as decoration and protection to products during the molding process. Its principle involves pre-inserting decorative parts such as films into the mold cavity, and then combining thermoforming and injection molding to tightly bond the film to the product body.

[0003] In the field of hot bending forming technology, traditional molds often suffer from problems such as low forming accuracy, easy deformation of product edges, and difficulty in demolding during the hot bending process. This is especially true when hot bending products with a certain depth, where traditional hot pressing molds face numerous challenges. On the one hand, during the hot pressing process, the lack of effective constraint on the edges easily leads to defects such as deformation and wrinkles, resulting in insufficient forming accuracy. On the other hand, products with a certain depth are prone to sticking to the mold during demolding due to design flaws, making it difficult to remove them smoothly from the mold cavity. Forced demolding not only damages the product's surface decorative layer, causing product scrap, but also affects the mold's lifespan, reduces production efficiency, and increases production costs. Therefore, there is an urgent need to develop a hot pressing mold structure that can effectively improve product forming quality and demolding convenience. Utility Model Content

[0004] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the above problems.

[0005] A mold for facilitating hot bending of products includes a power component, an upper mold component, and a lower mold component. The power component is used to drive the upper mold component to move up and down. The upper mold component includes an upper template and a hot press head disposed below the upper template. The hot press head is used to hot press the product. The lower mold component includes a lower template, and the lower template is provided with a forming groove adapted to the shape of the product.

[0006] The upper mold assembly also includes an auxiliary forming boss disposed on the edge of the hot press head, and the edge of the forming groove of the lower mold assembly is provided with an auxiliary forming groove that cooperates with the auxiliary forming boss. The auxiliary forming boss and the auxiliary forming groove are engaged with each other when the mold is closed.

[0007] As a further embodiment of this utility model: the lower surface of the upper template is provided with the auxiliary forming boss arranged parallel to the hot press head along its width direction, and the auxiliary forming boss is located on both sides of the hot press head.

[0008] As a further embodiment of this utility model: the auxiliary forming boss is integrally formed with the upper template and has a relief groove adapted to the contour of the hot press head. The hot press head is embedded in the relief groove and fits against the inner side of the auxiliary forming boss.

[0009] As a further embodiment of this utility model: the forming surface of the auxiliary forming boss is lower than the forming surface of the hot press head.

[0010] As a further embodiment of this utility model: the upper surface of the lower template is provided with the auxiliary forming groove arranged parallel to the forming groove along its width direction, and the auxiliary forming groove is located on both sides of the forming groove.

[0011] As a further embodiment of this utility model: the auxiliary forming groove extends to the edge of the lower template.

[0012] As a further embodiment of this utility model: the lower template is provided with positioning protrusions on both sides of the forming groove, and the positioning protrusions are staggered with the auxiliary forming groove.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1) The auxiliary forming boss and the auxiliary forming groove fit together and work with the positioning protrusion to position the product, which can effectively constrain the product edge, improve the accuracy and quality of hot bending forming, and reduce defects such as product edge deformation and wrinkles.

[0015] 2) The forming surface of the auxiliary forming boss is lower than the forming surface of the hot press head, so that the auxiliary forming boss contacts the product first for pre-positioning, reducing the friction and adhesion between the product and the mold. At the same time, the interlocking structure of the auxiliary forming boss and the groove can play a guiding role during demolding, making it easier for the product to be smoothly removed from the mold, improving the demolding efficiency and pass rate of the product.

[0016] 3) The design of the auxiliary molding groove extending to the edge of the lower template further optimizes the demolding operation, allowing operators to apply force more easily to remove the product.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a structural schematic diagram from one perspective of the present invention;

[0020] Figure 2 This is a structural schematic diagram from another perspective of this utility model;

[0021] Figure 3 This is a schematic diagram of the upper template in this utility model.

[0022] The reference numerals and names in the figure are as follows:

[0023] 1. Power assembly; 2. Upper template; 3. Hot press head; 4. Lower template; 5. Forming groove; 6. Auxiliary forming boss; 7. Auxiliary forming groove; 8. Clearance groove; 9. Positioning protrusion. Detailed Implementation

[0024] 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, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-3 In this embodiment of the utility model, a mold that facilitates hot bending of products is mainly composed of a power component 1, an upper mold component, and a lower mold component.

[0026] The power component 1 achieves precise control over the up-and-down movement of the upper mold component through mechanical transmission or hydraulic drive, providing a power basis for the mold opening and closing and hot pressing process.

[0027] The upper mold assembly includes an upper template 2, a hot press head 3, and an auxiliary forming boss 6. The upper template 2 serves as a support structure, providing an installation base for the hot press head 3 and the auxiliary forming boss 6. The hot press head 3 is installed below the upper template 2 and has a heating device inside. It can be heated by electric heating or circulation of heat transfer medium, etc., to apply high temperature and pressure to the product during the hot pressing process, causing the product material to undergo plastic deformation.

[0028] The auxiliary forming boss 6 is set along the width direction of the lower surface of the upper template 2, located on both sides of the hot press head 3 and arranged parallel to the hot press head 3. Specifically, if the hot press head 3 is set horizontally in a straight line in the horizontal direction, then the auxiliary forming boss 6 is also arranged horizontally in a straight line on both sides of the hot press head 3. The two extend in the same direction in space, neither intersecting nor tilting. This arrangement ensures that during the mold closing process, the auxiliary forming boss 6 and the hot press head 3 can contact the product, so that the pressure on the edge of the product can be evenly or relatively evenly distributed. Because when the mold is pressed down, the hot press head 3 and the auxiliary forming boss 6 act on the product in the same horizontal dimension, avoiding deformation or wrinkles of the product due to uneven local force.

[0029] The auxiliary molding boss 6 is integrally molded with the upper template 2. This structural design has significant advantages. Integral molding means there are no assembly gaps or weak points between the auxiliary molding boss 6 and the upper template 2, avoiding loosening or displacement problems caused by component assembly. Compared to a split structure, the integrally molded mold has higher overall strength. During long-term, frequent hot pressing operations, it can better maintain the shape and positional accuracy of the auxiliary molding boss 6, thus ensuring that in each hot pressing process, the auxiliary molding boss 6 can stably and accurately constrain and position the product edges, improving product quality. Consistency of molding quality; In addition, the auxiliary molding boss 6 has an internal clearance groove 8 that matches the contour of the hot press head 3. The hot press head 3 is embedded in the clearance groove 8, and the inner surfaces of the two are tightly fitted, which not only ensures the stable installation of the hot press head 3, but also enables the auxiliary molding boss 6 to assist the hot press head 3 in constraining the edge of the product. It is worth noting that the molding surface of the auxiliary molding boss 6 is lower than the molding surface of the hot press head 3. During the mold closing process, the auxiliary molding boss 6 contacts the edge of the product before the hot press head 3, and performs preliminary positioning and edge constraint of the product to prevent deformation, wrinkles and other problems from occurring on the edge of the product during the hot pressing process.

[0030] Specifically, the hot press head 3 is the main component for hot pressing the product. It is located in the central area of ​​the mold, while the auxiliary forming bosses 6 are set on both sides of the hot press head 3. When the mold is closed, the entire upper mold assembly moves downward. Since the auxiliary forming bosses 6 are located on the periphery of the hot press head 3, they will first approach and contact the edge of the product to perform preliminary positioning and constraint on the edge of the product. Then the hot press head 3 will contact the main body of the product for hot pressing. This design can fix and constrain the edge of the product before hot pressing begins by using the auxiliary forming bosses 6, preventing edge deformation, wrinkles and other problems from occurring during the hot pressing process, and improving the forming accuracy of the product.

[0031] The lower mold assembly mainly includes a lower template 4, on which a forming groove 5 adapted to the shape of the product is provided. The forming groove 5 provides a shape reference for the hot bending forming of the product. Along the width direction of the upper surface of the lower template 4, auxiliary forming grooves 7 are arranged parallel to the forming groove 5 on both sides of the forming groove 5. The auxiliary forming grooves 7 extend to the edge of the lower template 4. This design allows the operator to apply external force from the edge of the lower template 4 and use the opening structure formed by the auxiliary forming grooves 7 to more easily remove the product from the forming groove 5 during demolding. Since the auxiliary forming grooves 7 extend to the edge, the contact boundary between the product and the mold is clearly defined, reducing the contact area between the product and the mold, reducing the possibility of the product sticking to the mold, and further improving the convenience of demolding. In addition, the lower template 4 is also provided with positioning protrusions 9 on both sides of the forming groove 5. The positioning protrusions 9 are staggered with the auxiliary forming grooves 7. The top of the positioning protrusions 9 has a hemispherical structure, which can cooperate with the positioning holes preset on the edge of the product to achieve precise positioning of the product before hot pressing, further improving the forming accuracy of the product.

[0032] Through the above-described structural design, this utility model has significant beneficial effects: First, the auxiliary forming boss 6 and the auxiliary forming groove 7 interlock, and together with the positioning protrusion 9, they effectively constrain the product edge, improve the accuracy and quality of hot bending forming, and reduce defects such as edge deformation and wrinkles. Second, the forming surface of the auxiliary forming boss 6 is lower than the forming surface of the hot press head 3, allowing the auxiliary forming boss 6 to contact the product first for pre-positioning, reducing friction and adhesion between the product and the mold. At the same time, the interlocking structure of the auxiliary forming boss 6 and the groove can play a guiding role during demolding, facilitating the smooth removal of the product from the mold and improving the demolding efficiency and pass rate. Third, the design of the auxiliary forming groove 7 extending to the edge of the lower template 4 further optimizes the demolding operation, allowing operators to more easily apply force to remove the product.

[0033] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

Claims

1. A mold that facilitates hot bending of products, characterized in that, It includes a power assembly, an upper mold assembly, and a lower mold assembly. The power assembly is used to drive the upper mold assembly to move up and down. The upper mold assembly includes an upper template and a hot press head disposed below the upper template. The hot press head is used to hot press the product. The lower mold assembly includes a lower template, and the lower template is provided with a forming groove adapted to the shape of the product. The upper mold assembly also includes an auxiliary forming boss disposed on the edge of the hot press head, and the edge of the forming groove of the lower mold assembly is provided with an auxiliary forming groove that cooperates with the auxiliary forming boss. The auxiliary forming boss and the auxiliary forming groove are engaged with each other when the mold is closed.

2. The mold for facilitating hot bending of products according to claim 1, characterized in that, The lower surface of the upper template is provided with auxiliary forming bosses arranged parallel to the hot press head along its width direction, and the auxiliary forming bosses are located on both sides of the hot press head.

3. The mold for facilitating hot bending of products according to claim 2, characterized in that, The auxiliary forming boss is integrally formed with the upper template and has a relief groove adapted to the contour of the hot press head. The hot press head is embedded in the relief groove and fits against the inner side of the auxiliary forming boss.

4. A mold for facilitating hot bending of products according to claim 1, 2, or 3, characterized in that, The forming surface of the auxiliary forming boss is lower than the forming surface of the hot press head.

5. The mold for facilitating hot bending of products according to claim 2, characterized in that, The upper surface of the lower template is provided with auxiliary forming grooves arranged parallel to the forming groove along its width direction, and the auxiliary forming grooves are located on both sides of the forming groove.

6. A mold for facilitating hot bending of products according to claim 1 or 5, characterized in that, The auxiliary forming groove extends to the edge of the lower template.

7. The mold for facilitating hot bending of products according to claim 1, characterized in that, The lower template is provided with positioning protrusions on both sides of the forming groove, and the positioning protrusions are staggered with the auxiliary forming groove.

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