Structure for improving product sticking to front mold
By using nylon plugs and limit sliding inserts in the mold design of plastic products, the problem of product tightening force caused by the inserts in the front mold is solved, and the normal mold release of the product is achieved.
Patent Information
- Application Number
- CN202420562498.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-21
- Publication Date
- 2025-03-04
- Estimated Expiration
- 2034-03-21
AI Technical Summary
In the design and manufacturing process of plastic products, the inserts of the front mold cause the tightening force of the plastic product to be greater in the front mold than in the rear mold, resulting in the product being unable to be successfully demolded.
A structure that improves the product's adhesive front mold, including the front mold panel, water port plate, front mold template and rear mold template. Through the nylon glue plug and limit sliding insert, the insert is separated from the product before the front mold and rear mold opening to reduce the tightening force of the front mold.
Through the nylon glue plug and limit-sliding insert, the insert leaves the product before the front mold and rear mold opening, reducing the tightening force of the product in the front mold, allowing the product to remain on the rear mold, solving the problem of sticking to the front mold, and the product can be demolded normally through the rear mold thimble.
Smart Images
Figure CN222554133U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of plastic molds, and more specifically to a structure for improving product adhesion to a front mold. Background Art
[0002] With the development of the plastics industry, more and more products are replaced by plastic parts, the structure of plastic products is becoming more and more complex, and plastic molds are becoming more and more complex.
[0003] When designing a mold, it is often necessary to set inserts in the front mold due to the limitations of the plastic product, which increases the clamping force of the plastic product on the front mold. In particular, when there is a deep cavity structure on the front mold surface of the plastic product, the inserts of the front mold often make the clamping force of the plastic product on the front mold greater than the clamping force of the plastic product on the back mold, causing the plastic product to remain in the front mold and unable to be demolded smoothly. Utility Model Content
[0004] In view of the above-mentioned defects of the prior art, a structure for improving the adhesion of products to the front mold is provided.
[0005] The technical solution adopted by the utility model to solve its technical problems is: a structure for improving the front mold adhesion of products, comprising a front mold panel, a nozzle plate, a front mold plate and a rear mold plate, the nozzle plate is embedded in the bottom end of the front mold panel, the bottom end of the front mold panel is provided with a nylon plug, the front mold core is provided on the front mold plate, the front mold core is provided with an insert for upper and lower limit sliding for molding, the top end of the insert is abutted with the bottom end of the nozzle plate, the top end of the insert is provided with a blind hole, the nylon plug extends into the blind hole, and the bottom end of the front mold plate is provided with a rear mold plate.
[0006] Preferably, an insert block is arranged at the top of the insert corresponding to the position of the nylon plug, the blind hole is arranged at the top of the insert block, and the sprue plate through hole and the front mold surface blind hole for avoiding the insert block are arranged on the sprue plate and the front mold surface panel accordingly.
[0007] Preferably, the top of the front mold core is provided with an insert through hole for installing the insert, the upper portion of the insert through hole is recessed outward to form a countersunk head of the insert through hole, the upper portion of the insert extends an extension portion located in the countersunk head along a circle of its side wall, the front template is provided with a front template through hole for sliding with the extended portion of the insert, and the front template is provided with a limit block for limiting the position of the insert.
[0008] Preferably, the inner side wall of the through hole of the front template and the outer side wall of the extension portion are both inclined structures, and the inclined surface structure of the through hole of the front template and the inclined surface structure of the extension portion are both inclined outward from low to high.
[0009] Preferably, two front template grooves are correspondingly provided at positions on opposite sides of the front template through hole at the top of the front template, and both of the two front template grooves are connected with the front template through hole, and two limit blocks are provided, and the two limit blocks are correspondingly arranged in the two front template grooves, and the extension part is provided with two insert notches that cooperate with the corresponding limit blocks as limit inserts, and one end of the two limit blocks extends into the corresponding insert notches.
[0010] Preferably, one end of the insert through hole located at the countersunk head has a chamfered structure.
[0011] Preferably, an opener and a closer are provided between the front template and the rear template.
[0012] Preferably, edge locks are provided between the side walls of the front template and the side walls of the rear template.
[0013] The beneficial effect of the utility model is that: through the nylon plug and the limited sliding insert, the insert is separated from the product before the front mold and the rear mold are opened, so that the clamping force of the product on the front mold is reduced, and when the front mold and the rear mold are opened, the product remains on the rear mold. At this time, the product can be demolded normally through the ejector pin of the rear mold, solving the problem of sticking to the front mold. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the cross-sectional structure of the embodiment of the utility model when the mold is closed;
[0015] Figure 2 It is a schematic diagram of the cross-sectional structure of the nozzle plate and the front template when the mold is opened in the embodiment of the utility model;
[0016] Figure 3 It is a schematic diagram of the cross-sectional structure of the front template and the rear template when the mold is opened in the embodiment of the utility model;
[0017] Figure 4 It is a schematic diagram of the overall structure when the front template and the rear template are opened in the implementation of the utility model;
[0018] Figure 5 It is a structural schematic diagram of the template before the implementation of the utility model;
[0019] Figure 6 It is a schematic diagram of the structure of the insert and the insert block of the utility model;
[0020] Figure 7 It is a structural schematic diagram of the mold core before the utility model is implemented.
[0021] Figure numerals: 1 front mold panel, 2 nozzle plate, 3 front template, 30 front template through hole, 31 limit block, 32 nylon plug, 4 rear template, 5 front mold core, 50 insert through hole, 51 countersunk head, 6 insert, 60 extension part, 61 insert notch, 62 insert block, 63 blind hole, 7 opener and closer, 8 side lock. DETAILED DESCRIPTION
[0022] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the following will be clearly and completely described in combination with the technical solution in the embodiments of the utility model. Obviously, the described embodiments are partial embodiments of the utility model, rather than all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work belong to the protection scope of the utility model. In addition, the directional terms mentioned in the utility model, such as "up", "down", "front", "back", "left", "right", "inside", "outside", etc., are only referenced to the directions of the attached diagrams. The directional terms used are for better and clearer explanation and understanding of the utility model, rather than indicating or implying the orientation that the utility model must have, and therefore cannot be understood as a limitation on the utility model.
[0023] The utility model is implemented as follows Figures 1 to 7As shown in, a structure for improving product adhesion to the front mold comprises a front mold panel 1, a nozzle plate 2, a front mold plate 3 and a rear mold plate 4, wherein the nozzle plate 2 is embedded in the bottom end of the front mold panel 1, and two nylon rubber plugs 32 are arranged at the bottom end of the front mold panel 1, and a front mold core 5 is arranged on the front mold core 3, and an insert 6 for upper and lower limit sliding of molding is arranged on the front mold core 5, and an insert through hole 50 for installing the insert 6 is arranged at the top of the front mold core 5, and the upper part of the insert through hole 50 is recessed outward to form a rectangular countersunk head 51 of the insert through hole 50, and a rectangular extension part 60 located in the countersunk head 51 is extended from the upper part of the insert 6 along the circumference of its side wall, The front template 3 is provided with a front template through hole 30 for sliding with the extension portion 60 of the insert 6, and the front template 3 is provided with a limiting block 31 for limiting the insert 6. The top of the front template 3 is located at the left and right sides of the front template through hole 30, and two front template grooves are correspondingly provided. The two front template grooves are connected to the front template through hole. There are two limiting blocks 31, and the two limiting blocks 30 are correspondingly arranged in the two front template grooves. The extension portion 60 is provided with two insert notches 61 that cooperate with the corresponding limiting blocks 30 to limit the insert 6, and one end of the two limiting blocks 30 extends into the corresponding insert notch 61, that is, the limiting block on the left side. The right end of the limit block 30 extends into the insert notch 61 on the left, and the left end of the limit block 30 on the right extends into the insert notch 61 on the right. The distance between the bottom end of the limit block 30 and the bottom end of the insert notch 61 is the limit distance when the insert 6 slides upward. The top end of the insert 6 abuts against the bottom end of the gate plate 2. The top end of the insert 6 is provided with two blind holes 63 for cooperating with two nylon plugs 32 to generate damping. Each of the nylon plugs 32 extends into the corresponding blind hole 63. The friction between the side wall of the nylon plug 32 and the inner wall of the blind hole 63 is the generated damping. The bottom end of the front template 3 is provided with a rear template 4. When the mold is opened after molding, the gate is firstly The plate 2 and the front template 3 are opened. At this time, the sprue plate 2 is separated from the front template 3. The nylon plug 32 on the front template panel 1 drives the insert 6 to slide upward through the damping force generated by the blind hole 63 until the bottom end of the insert notch 61 abuts against the bottom end of the limit block 32, and the insert 6 stops sliding upward, which separates the insert 6 from the molded product, reducing the clamping force of the product on the front mold, making the front mold clamping force of the product smaller than the rear mold clamping force, and then the front template 3 and the rear template 4 are opened. At this time, since the front mold clamping force is smaller than the rear mold clamping force, the product will remain in the rear mold, solving the problem of product sticking to the front mold. Finally, the product can be demolded by ejecting the product through the rear mold ejector.
[0024] Further improvements, such as Figure 1 and Figure 6As shown in the figure, the top of the insert 6 is provided with an insert block 62 corresponding to the position of the two nylon rubber plugs 32, the two blind holes 63 are correspondingly provided at the top of the two insert blocks 62, and the sprue plate 2 and the front mold panel 1 are correspondingly provided with sprue plate through holes and front mold panel blind holes for avoiding the insert blocks 62. The insert block 62 can prevent the rubber powder generated by the friction between the nylon rubber plug 32 and the blind hole 63 from falling onto the insert 6, especially when a flow channel is provided at the top of the insert 6, it can effectively prevent the rubber powder from falling into the flow channel and affecting the quality of the product.
[0025] Further improvements, such as Figure 1 and Figure 2 As shown in the figure, the inner wall of the front template through hole 30 and the outer wall of the extension part 60 are both inclined structures, and the inclined surface structure of the front template through hole 30 and the inclined surface structure of the extension part 60 are both inclined outward from low to high, and the insert through hole 50 is located at one end of the countersunk head 51 and is chamfered. The up and down sliding of the insert 6 is guided by the inclined surface structure and the chamfered structure, so that the insert 6 can leave the product and reset more smoothly.
[0026] Further improvements, such as Figure 3 and Figure 4 As shown in the figure, eight openers and shutters 7 are arranged between the front template 3 and the rear template 4, and the openers and shutters 7 are nylon openers and shutters. The eight nylon openers and shutters are arranged at the top of the rear template 4, and two nylon openers and shutters are correspondingly arranged at the four corners of the top of the rear template 4. The bottom end of the front template 3 is provided with opener and shutter holes corresponding to the eight nylon openers and shutters. The openers and shutters ensure that the mold opening sequence of the mold gate plate 2 and the front template 3 is prior to the mold opening sequence of the front template 3 and the rear template 4.
[0027] Further improvements, such as Figure 4 As shown in the figure, a plurality of side locks 8 are arranged between the side walls of the front template 3 and the side walls of the rear template 4, so that there is no deviation between the front template 3 and the rear template 4 when the mold is closed, thereby ensuring the relative position accuracy between the parts when the front mold and the rear mold are closed.
[0028] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to the utility model.
Claims
1. A structure for improving product adhesion to the front mold, comprising a front mold panel, a nozzle plate, a front mold plate and a rear mold plate; characterized in that: The sprue plate is embedded in the bottom end of the front mold panel; a nylon rubber plug is provided at the bottom end of the front mold panel; a front mold core is provided on the front mold plate; an insert with upper and lower limit sliding for molding is provided on the front mold core; the top end of the insert is abutted against the bottom end of the sprue plate; a blind hole is provided at the top end of the insert; the nylon rubber plug extends into the blind hole; a rear mold plate is provided at the bottom end of the front mold plate.
2. A structure for improving product adhesion to front mold according to claim 1, characterized in that: An insert block is arranged at the top of the insert corresponding to the position of the nylon plug; the blind hole is arranged at the top of the insert block; the nozzle plate through hole and the front mold surface blind hole for avoiding the insert block are arranged on the nozzle plate and the front mold surface plate respectively.
3. The structure for improving product adhesion to the front mold according to claim 1, characterized in that: The top of the front mold core is provided with an insert through hole for installing the insert; the upper part of the insert through hole is recessed outward to form a countersunk head of the insert through hole; the upper part of the insert extends an extension portion located in the countersunk head along the side wall thereof; the front template is provided with a front template through hole for sliding with the extension portion of the insert; and the front template is provided with a limit block for limiting the position of the insert.
4. A structure for improving product adhesion to front mold according to claim 3, characterized in that: The inner side wall of the through hole of the front template and the outer side wall of the extension part are both inclined structures; the inclined surface structure of the through hole of the front template and the inclined surface structure of the extension part are both inclined outward from low to high.
5. The structure for improving product adhesion to the front mold according to claim 3, characterized in that: Two front template grooves are correspondingly arranged at the top of the front template located on the opposite sides of the front template through hole; the two front template grooves are both connected with the front template through hole; there are two limit blocks; the two limit blocks are correspondingly arranged in the two front template grooves; the extension part is provided with two insert notches that cooperate with the corresponding limit blocks for limiting inserts; one end of the two limit blocks extends into the corresponding insert notches.
6. The structure for improving product adhesion to the front mold according to claim 3, characterized in that: The insert through hole has a chamfered structure at one end of the countersunk head.
7. The structure for improving product adhesion to the front mold according to claim 1, characterized in that: An opener and a closer are arranged between the front template and the rear template.
8. The structure for improving product adhesion to front mold according to claim 1, characterized in that: Side locks are arranged between the side walls of the front template and the side walls of the rear template.