Mold structure beneficial to demolding of product with rib position on inner ring
By designing the matching of the ejection plate and the release flange in the mold structure, the problem of difficult demolding of products with rib positions in the inner ring is solved, and a rapid and damage-free demolding effect is achieved, which is suitable for the standardized production of rubber products.
Patent Information
- Application Number
- CN202421751252.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-23
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-07-23
AI Technical Summary
During the demolding process, it is difficult to achieve rapid and smooth demolding of the inner ring ribbed products, which can easily cause product damage and cumbersome demolding steps.
A mold structure is designed, including an upward rubber plate, a middle plate, a release plate, a lower formwork and an ejection plate. The ejection rod of the ejection plate passes through the through hole of the lower formwork, and the release flange drives the product to be removed from the die core to achieve rapid release.
It achieves rapid and smooth mold release of products with ribs in the inner ring, avoids product damage, improves mold release efficiency and product quality, and meets the needs of large-scale production.
Smart Images
Figure CN223058241U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of die structures, and more specifically, to a die structure that is conducive to the demolding of products with rib positions on the inner ring. Background Art
[0002] The rubber mold is an important part of the production of rubber products. The rubber material is injected into the cavity of the rubber mold under high pressure. After cooling and curing, the molded product is obtained. At present, the structure of rubber products is becoming more and more diverse, and there is a demand for products with rib positions on the inner ring. For example, Figure 1 As shown, the product with rib positions on the inner ring and its concave and convex ribs 10. Due to the structural limitations of the rib positions of the product with rib positions on the inner ring, when the upper mold and the lower mold are separated during normal mold opening, the product will get stuck on the mold core and cannot be automatically removed from the mold core. The method of manually removing it is likely to damage the product. In addition, the structure of the traditional demolding component is relatively complex and the demolding steps are cumbersome. Therefore, it is necessary to design a die structure that is conducive to the demolding of products with rib positions on the inner ring, has a simple structure, and can realize the smooth demolding of the product. Summary of the Utility Model
[0003] The purpose of the utility model is to overcome the above-mentioned defects in the prior art, and provide a die structure that is conducive to the demolding of products with rib positions on the inner ring, which can realize the rapid and smooth demolding of rubber products with rib positions on the inner ring after molding, avoid damaging the product during the demolding process, improve the demolding efficiency, and ensure the product quality.
[0004] To achieve the above object, the utility model provides a mold structure which is conducive to the demolding of products with rib positions on the inner ring. The mold structure includes an upper feeding plate, a middle plate, a demolding plate, a lower template and an ejector plate which are arranged in sequence from top to bottom. The lower template is fixed below the demolding plate. A plurality of mold cores are convexly arranged on the top surface of the lower template. An uneven edge in the shape of uneven ribs corresponding to the product with rib positions on the inner ring is circumferentially arranged on the outer wall of the upper end part of each mold core. Middle mold holes corresponding to each mold core are formed on the middle plate. Mold core insertion holes corresponding to each mold core are formed on the demolding plate. An annular boss is convexly arranged at the top opening part of each mold core insertion hole. A demolding flange corresponding to the bottom shape of the uneven edge is convexly arranged at the upper end part of the inner wall of each annular boss. A demolding ejecting hole communicating with each middle mold hole and corresponding to the shape of the annular boss is concavely arranged at the bottom of the middle plate. The ejector plate is arranged below the lower template in a manner that it can move up and down driven by a rubber vulcanizing machine. A plurality of ejector rods are fixedly arranged on the top surface of the ejector plate. Through holes corresponding to each ejector rod are formed through the lower template. When the mold is closed, the mold cores of the lower template pass through the mold core insertion holes of the demolding plate and cooperate with the middle mold holes of the middle plate, the bottom of the second feeding plate and the top of the annular boss to form a mold cavity for product molding. When demolding, the ejector plate can move upward and each of its ejector rods passes through the through holes of the lower template to jack up the entire demolding plate. At the same time, the demolding plate can drive all products to be ejected from the mold cores, thereby realizing the demolding of the products.
[0005] Preferably, the upper feeding plate includes a first feeding plate and a second feeding plate. The first feeding plate is located above the second feeding plate, and the second feeding plate is located above the middle plate.
[0006] Preferably, a plurality of groups of feeding hole groups distributed in an array are formed through the first feeding plate. Each group of feeding hole groups includes a plurality of feeding holes distributed in a ring.
[0007] Preferably, a pouring hole group corresponding to each feeding hole group is formed through the second feeding plate. Each group of pouring hole groups includes pouring holes corresponding to each feeding hole.
[0008] Preferably, an annular groove corresponding to each middle mold hole is concavely arranged on the bottom surface of the second feeding plate. The pouring holes corresponding to each group of pouring hole groups are circumferentially arranged on the inner ring edge of the annular groove.
[0009] Preferably, the diameter of the top opening of the middle mold hole is equal to the inner diameter of the annular groove, and the diameter of the bottom opening of the middle mold hole is larger than the diameter of the mold core insertion hole.
[0010] Preferably, the glue outlet end of the pouring hole is set to a conical structure, and the inner diameter of the glue inlet end of the pouring hole is larger than the inner diameter of its glue outlet end.
[0011] Preferably, first handles are respectively and fixedly arranged on both sides of the first glue inlet plate, second handles are respectively and fixedly arranged at both ends of the second glue inlet plate, and third handles are respectively and fixedly arranged on both sides of the middle plate.
[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0013] The structure of the present utility model is simple, novel and reasonably designed. It is provided with an upper glue inlet plate, a middle plate, a demolding plate, a lower template and an ejector plate. During demolding, the ejector plate can move upward and each of its ejector rods passes through the through holes of the lower template to lift the entire demolding plate. At the same time, the demolding flange of the demolding plate can drive all rubber products with rib positions on the inner ring to be disengaged from the mold core. Through the coordinated work of each plate body of the mold, rapid and smooth demolding of the product after molding is achieved, damage to the product during the demolding process can be avoided, the demolding efficiency is improved, the quality of the product is guaranteed, and large-scale and standardized production of enterprises can be satisfied. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0015] Figure 1 is a schematic structural diagram of a product with rib positions on the inner ring provided by an embodiment of the present utility model;
[0016] Figure 2 is a schematic structural diagram provided by an embodiment of the present utility model;
[0017] Figure 3 is an exploded schematic diagram provided by an embodiment of the present utility model;
[0018] Figure 4 is an enlarged sectional view of the middle plate and the demolding plate provided by an embodiment of the present utility model;
[0019] Figure 5 is a sectional schematic diagram provided by an embodiment of the present utility model;
[0020] Figure 6 is an enlarged sectional view of the first glue inlet plate provided by an embodiment of the present utility model;
[0021] Figure 7 is an enlarged sectional view of the second glue inlet plate provided by an embodiment of the present utility model;
[0022] Figure 8It is an enlarged sectional view of the lower template provided by an embodiment of the present utility model. Detailed implementation manners
[0023] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.
[0024] Please refer to Figure 2 and Figure 3 , an embodiment of the present utility model provides a mold structure that is conducive to demolding products with rib positions on the inner ring, including components such as an upper runner plate 1, a middle plate 2, a stripper plate 3, a lower template 4, and an ejector plate 5. Each component of this embodiment will be described in detail below with reference to the accompanying drawings.
[0025] As Figure 2 , Figure 3 and Figure 8 shown, the upper runner plate 1, the middle plate 2, the stripper plate 3, and the lower template 4 can be arranged in sequence from top to bottom. The lower template 4 is fixed below the stripper plate 3. A plurality of mold cores 41 are convexly provided on the top surface of the lower template 4. An uneven edge 42 in the shape of an uneven rib corresponding to a product with a rib position on the inner ring is provided around the outer wall of the upper end portion of the mold core 41.
[0026] As Figure 4 shown, middle mold holes 21 corresponding to each mold core 41 can be opened on the middle plate 2. Mold core insertion holes 31 corresponding to each mold core 41 are opened on the stripper plate 3. An annular boss 32 is convexly provided at the top opening portion of each mold core insertion hole 31. A demolding flange 33 corresponding to the bottom shape of the uneven edge 42 is convexly provided at the upper end portion of the inner wall of each annular boss 32. A demolding ejection hole 22 communicating with each middle mold hole 21 and corresponding to the shape of the annular boss 32 is concavely provided at the bottom of the middle plate 2. The ejector plate 5 is arranged below the lower template 4 so that it can move up and down driven by a rubber vulcanizing machine. A plurality of ejector rods 51 are fixedly provided on the top surface of the ejector plate 5. Through holes 43 corresponding to each ejector rod 51 are penetrated and opened on the lower template 4.
[0027] During specific implementation, as Figure 5 shown, when the mold is closed, the mold core 41 of the lower template 4 passes through the mold core insertion hole 31 of the stripper plate 3 and then cooperates with the middle mold hole 21 of the middle plate 2, the bottom of the second runner plate 12, and the top of the annular boss 32 to form a mold cavity 20 for product molding;
[0028] When demolding, the ejector plate 5 can move upward, and each ejector rod 51 thereof can pass through the through holes 43 of the lower template 4 to lift the entire demolding plate 3, and at the same time, the demolding flange 33 can drive all products to be ejected from the mold core 41, thereby realizing the demolding of the products.
[0029] Preferably, the upper runner plate 1 can include a first runner plate 11 and a second runner plate 12. The first runner plate 11 is located above the second runner plate 12, and the second runner plate 12 is located above the middle plate 2.
[0030] As Figure 6 shown, a plurality of groups of runner hole groups 110 distributed in an array can be formed through the first runner plate 11. Each group of runner hole groups 110 includes a plurality of runner holes 111 distributed in a ring shape.
[0031] As Figure 7 shown, a pouring hole group 120 corresponding to each runner hole group 110 can be formed through the second runner plate 12. Each group of pouring hole groups 120 includes a pouring hole 121 corresponding to each runner hole 111.
[0032] Among them, the runner holes 111 of the first runner plate 11 can ensure the uniform injection of the rubber material, and the pouring holes 121 of the second runner plate 12 ensure that in the case of multi-point injection, the mold cavity 20 can be filled simultaneously.
[0033] Specifically, a circular groove 122 corresponding to each middle mold hole 21 can be recessed on the bottom surface of the second runner plate 12. The pouring holes 121 corresponding to each group of pouring hole groups 120 are respectively arranged around the inner ring edge of the circular groove 122.
[0034] Among them, the top opening diameter of the middle mold hole 21 can be equal to the inner ring diameter of the circular groove 122. Such a design can ensure that when the mold is closed, the circular groove 122 can accurately cooperate and fit with the upper part of the middle mold hole 21, ensuring that the rubber material flows into the interior of the mold cavity 20 during injection. The bottom opening diameter of the middle mold hole 21 is larger than the diameter of the mold core insertion hole 31. The space of the mold core insertion hole 31 can accommodate the insertion of the mold core 41. At the same time, a certain fitting gap is formed between the middle mold hole 21 and the mold core insertion hole 31 to form a molding position for the bottom of the product, ensuring the molding accuracy of the product and its smooth ejection from the mold core.
[0035] Preferably, the rubber outlet end of the pouring hole 121 can be set as a conical structure, and the inner diameter of the rubber inlet end of the pouring hole 121 is larger than the inner diameter of its rubber outlet end.
[0036] In order to more conveniently open and close the mold plate body during mold opening and mold closing, first pull handles 113 can be fixedly provided on both sides of the first glue inlet plate 11, second pull handles 123 are fixedly provided at both ends of the second glue inlet plate 12, and third pull handles 23 are fixedly provided on both sides of the middle plate 2.
[0037] During specific implementation, the lower template 4 is usually fixed on a translation driving device installed on the machine table of a rubber vulcanization molding machine. It can be installed horizontally and reciprocally below the hydraulic device and above the ejection driving device of the rubber vulcanization molding machine. The ejection template 3, the middle plate 2, the second glue inlet plate 12, and the first glue inlet plate 11 can be sequentially and mutually hingedly arranged on the lower template 4 from bottom to top. When closing the mold, the whole mold moves downward through the hydraulic device of the rubber vulcanization molding machine to complete the molding operation. When demolding, the whole mold moves to above the ejection driving device through the translation driving device. After flipping and opening the first glue inlet plate 11, the ejection mechanism drives the ejection rod 51 of the ejection plate 5 to move upward and can lift the middle plate 2 and the second glue inlet plate 12 above the ejection template 3 together. The demolding flange 33 can drive all products to be separated from the mold core 41. Then, the second glue inlet plate 12 and the middle plate 2 are flipped and opened in sequence. The products are all located in the middle mold holes 21 of the middle plate 2. Finally, the products are blown off and collected by a high-pressure air gun or the like.
[0038] In summary, during demolding of the present utility model, the ejection plate can move upward and each of its ejection rods can pass through the through holes of the lower template to lift the entire ejection template. At the same time, the demolding flange of the ejection template can drive all rubber products with rib positions inside the circle to be separated from the mold core. Through the cooperative work of each plate body of the mold, rapid and smooth demolding of the products after molding is realized, damage to the products during the demolding process can be avoided, the demolding efficiency is improved, the quality of the products is guaranteed, and large-scale and standardized production of enterprises can be satisfied.
[0039] The above embodiments are the preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present utility model shall be equivalent replacement methods and are all included in the protection scope of the present utility model.
Claims
1. A mold structure facilitating the demolding of products with rib positions on the inner ring, characterized in that: It includes an upper feeding plate (1), a middle plate (2), a stripping plate (3), a lower template (4) and an ejector plate (5) which are arranged in sequence from top to bottom. The lower template (4) is fixed below the stripping plate (3). A plurality of mold cores (41) are convexly provided on the top surface of the lower template (4). An uneven edge (42) in the shape of an uneven rib corresponding to a product with rib positions on the inner circle is provided around the outer wall of the upper end part of the mold core (41). Middle mold holes (21) corresponding to each mold core (41) are provided on the middle plate (2). Mold core insertion holes (31) corresponding to each mold core (41) are provided on the stripping plate (3). An annular boss (32) is convexly provided at the top opening part of each mold core insertion hole (31). A stripping flange (33) corresponding to the bottom shape of the uneven edge (42) is convexly provided at the upper end part of the inner wall of each annular boss (32). A stripping ejection hole (22) communicating with each middle mold hole (21) and corresponding to the shape of the annular boss (32) is concavely provided at the bottom of the middle plate (2). The ejector plate (5) is arranged below the lower template (4) in a manner that it can move up and down driven by a rubber vulcanizing machine. A plurality of ejector rods (51) are fixedly provided on the top surface of the ejector plate (5). Through holes (43) corresponding to each ejector rod (51) are penetratedly provided on the lower template (4). When the mold is closed, the mold core (41) of the lower template (4) passes through the mold core insertion hole (31) of the stripping plate (3) and then cooperates with the middle mold hole (21) of the middle plate (2), the bottom of the second feeding plate (12) and the top of the annular boss (32) to form a mold cavity (20) for product molding. When demolding, the ejector plate (5) can move upward and each of its ejector rods (51) passes through the through hole (43) of the lower template (4) to lift the entire stripping plate (3). At the same time, the stripping flange (33) can drive all products to be stripped from the mold core (41), thereby realizing the demolding of the products.
2. The mold structure according to claim 1, which is conducive to the demolding of products with rib positions on the inner ring, is characterized in that: The upper feeding plate (1) includes a first feeding plate (11) and a second feeding plate (12). The first feeding plate (11) is located above the second feeding plate (12), and the second feeding plate (12) is located above the middle plate (2).
3. A mold structure facilitating the demolding of a product with ribs on the inner ring according to claim 2, characterized in that: A plurality of groups of feeding hole groups (110) distributed in an array are penetratedly provided on the first feeding plate (11). Each group of feeding hole groups (110) includes a plurality of feeding holes (111) distributed in a ring.
4. A mold structure facilitating the demolding of a product with ribs on the inner ring according to claim 3, characterized in that: Pouring hole groups (120) corresponding to each feeding hole group (110) are penetratedly provided on the second feeding plate (12). Each group of pouring hole groups (120) includes pouring holes (121) corresponding to each feeding hole (111).
5. A mold structure for facilitating the demolding of a product with ribs on the inner ring according to claim 4, characterized in that: An annular groove (122) corresponding to each middle mold hole (21) is concavely provided on the bottom surface of the second feeding plate (12). The pouring holes (121) corresponding to each group of pouring hole groups (120) are all arranged around the inner circle edge of the annular groove (122).
6. A mold structure for facilitating the demolding of a product with ribs on the inner ring according to claim 5, characterized in that: The top opening diameter of the middle mold hole (21) is equal to the inner circle diameter of the annular groove (122), and the bottom opening diameter of the middle mold hole (21) is larger than the diameter of the mold core insertion hole (31).
7. A mold structure for facilitating the demolding of a product with rib positions on the inner ring according to claim 4, characterized in that: The glue outlet end of the pouring hole (121) is provided with a conical structure, and the inner diameter of the glue inlet end of the pouring hole (121) is larger than the inner diameter of its glue outlet end.
8. A mold structure facilitating the demolding of a product with rib positions on the inner ring according to claim 2, characterized in that: First handles (113) are respectively and fixedly provided on both sides of the first glue inlet plate (11), second handles (123) are respectively and fixedly provided at both ends of the second glue inlet plate (12), and third handles (23) are respectively and fixedly provided on both sides of the middle plate (2).