A back membrane inner row structure

Abstract

The utility model discloses a kind of rear membrane inner row structure, it is related to mould technical field, including sequentially connected bottom plate, bearing plate and rear template, the bottom plate is located in its die foot and is equipped with ejector pin plate, top pin assembly is provided on the ejector pin plate and is sequentially penetrated in bearing plate and rear template;Rear membrane kernel is provided on the rear template, rear die core is fixedly connected on the rear membrane kernel, inner row is fixedly connected on the bearing plate, the upper end of the inner row is butt joint with the lower end of rear die core;The inner row is provided with inclined vertical groove that is inwardly inclined along its surface, rear die core is provided with sliding slot that is horizontally arranged along its surface towards inside, the sliding slot is communicated with inclined vertical groove, sliding block is slidably fitted in the sliding slot, the inner side of the sliding block is provided with inclined portion that is slidably matched with inclined vertical groove, the outer side of the sliding block is provided with product profiling portion for helping product forming;Effectively solve the demoulding problem of product internal undercut structure.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, specifically to a rear in-mold positioning structure. Background Technology

[0002] In the field of injection mold design, smooth product ejection is a crucial step in ensuring production efficiency and product quality. However, when the product contains an undercut structure, traditional mold ejection methods often face significant challenges. These undercut structures are usually essential components of the product's function or appearance design and cannot be easily eliminated, which places higher demands on the mold's ejection mechanism.

[0003] Ordinary angled ejector structures have significant limitations in addressing such issues. Due to the specific structure of the product, such as deep undercuts, narrow spaces, or strong interrelationships between the undercuts and other parts of the product, ordinary angled ejectors are prone to interfering with other components of the product or mold during operation, hindering smooth demolding. Forcing the use of an ordinary angled ejector structure may not only lead to defects such as tearing and deformation during demolding, affecting product quality, but in severe cases, it may even damage the mold, increasing production costs and maintenance cycles.

[0004] To solve this problem and ensure efficient and high-quality demolding of products with internal undercut structures, designing a suitable demolding mechanism is imperative. Therefore, it is necessary to propose a new technical solution to address the aforementioned issues. Utility Model Content

[0005] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the above problems.

[0006] A rear mold in-line structure includes a base plate, a support plate, and a rear template connected in sequence. The base plate is provided with an ejector plate located inside its mold foot. The ejector plate is provided with ejector pin assemblies that are sequentially inserted into the support plate and the rear template.

[0007] The rear template is provided with a rear mold core, and a rear mold core is fixedly connected to the rear mold core. An inner slide is fixedly connected to the support plate, and the upper end of the inner slide is mated with the lower end of the rear mold core.

[0008] The inner part has an inclined vertical groove that is inclined inward along its surface, and the rear mold core has a sliding groove that is horizontally inclined inward along its surface. The sliding groove is connected to the inclined vertical groove, and a slider is slidably fitted in the sliding groove. The inner side of the slider is provided with an inclined part that slides with the inclined vertical groove, and the outer side of the slider is provided with a product contouring part to help the product form.

[0009] The support plate and the rear template are movably separable. When the support plate and the rear template are separated, the inclined vertical groove has a space to accommodate the inclined portion, allowing the slider to retract along the groove.

[0010] As a further embodiment of this utility model: the product contouring part is an inclined guide groove, and the inclination direction of the inclined guide groove is the same as or approximately the inclination direction of the inclined vertical groove.

[0011] As a further embodiment of this utility model: the rear mold core is provided with a fitting groove along its lower end, and the upper end of the inner part can be slidably fitted into the fitting groove;

[0012] The inner part and the rear mold core are jointly provided with a slide corresponding to the ejector pin assembly.

[0013] As a further embodiment of this utility model: the inclined part is formed by protrusion along the inner side of the slider, the inclined part is slidably embedded in the inclined vertical groove, the inclined vertical groove is formed with a first inclined surface, and the inclined part is provided with a second inclined surface adapted to the first inclined surface.

[0014] As a further embodiment of this utility model: the slider has recesses on both sides of its inclined portion, the inner part has a third inclined surface on both sides of its inclined vertical groove, and the recesses are provided with a fourth inclined surface adapted to the third inclined surface.

[0015] As a further embodiment of this utility model: the rear mold core is provided with a limiting protrusion along the extension direction of the slide groove, and the end of the slider is provided with a limiting groove that matches the limiting protrusion.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] This invention effectively solves the demolding problem of internal undercut structures in products. Through the cooperative design of the inner slide and the slider, it can adapt to product structures with internal undercuts, avoiding the interference problems that may occur with traditional inclined ejector structures, and ensuring smooth demolding of products. At the same time, it effectively improves the product molding quality. The product contour part of the slider can accurately participate in the molding of the internal undercut structure of the product, and achieves smooth separation from the product through inward shrinkage during the demolding process, reducing the occurrence of defects such as product tearing and deformation.

[0018] 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

[0019] 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.

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the rear mold core and the inner slide in this utility model;

[0022] Figure 3 This is an exploded structural diagram of the fit between the rear mold core and the inner sliding part in this utility model;

[0023] Figure 4 This is a schematic diagram of the slider in this utility model.

[0024] The reference numerals and names in the figure are as follows:

[0025] 1. Base plate; 2. Support plate; 3. Rear template; 4. Ejector plate; 5. Ejector assembly; 6. Rear mold core; 7. Rear mold core; 8. Inner slide; 9. Inclined vertical groove; 10. Slide groove; 11. Slider; 12. Inclined part; 13. Product contouring part; 14. Fitting groove; 15. Slideway; 16. First inclined surface; 17. Second inclined surface; 18. Recessed part; 19. Third inclined surface; 20. Fourth inclined surface. Detailed Implementation

[0026] 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.

[0027] Please see Figure 1-4 In this embodiment of the present invention, a rear mold inner slide 8 structure specifically includes a base plate 1, a support plate 2, a rear template 3, an ejector pin assembly 5, a rear mold core 6, a rear mold core 7, an inner slide 8, and a slider 11, etc. The specific structure and cooperation relationship of each component are as follows:

[0028] The base plate 1, the support plate 2, and the rear template 3 are connected in sequence to form the basic frame of the structure. The base plate 1 has an ejector plate 4 inside its mold foot, and an ejector assembly 5 is installed on the ejector plate 4. The ejector assembly 5 passes through the support plate 2 and the rear template 3 in sequence, and can realize the vertical ejection action under the action of the ejector plate 4, so as to eject the product from the mold during the demolding stage.

[0029] A rear mold core 6 is mounted on the rear template 3, and a rear mold core 7 is fixedly connected to the rear mold core 6. An inner slide 8 is fixedly connected to the support plate 2, and the upper end of the inner slide 8 and the lower end of the rear mold core 7 form a mating fit. In order to improve the stability and accuracy of the mating between the two, a fitting groove 14 is opened along the lower end of the rear mold core 7, and the upper end of the inner slide 8 is slidably embedded in the fitting groove 14. At the same time, the inner slide 8 and the rear mold core 7 also have a slide 15 corresponding to the ejector pin assembly 5. The ejector pin assembly 5 can pass through the slide 15 during the ejection process to ensure the smooth ejection action.

[0030] The inner mold core 8 has an inwardly inclined vertical groove 9 along its surface. Correspondingly, the rear mold core 7 has an inwardly horizontal sliding groove 10 along its surface, and the sliding groove 10 is connected to the inclined vertical groove 9. The slider 11 is slidably fitted into the sliding groove 10, and its inner side is provided with an inclined portion 12 that slides with the inclined vertical groove 9. The inclined portion 12 is formed by protruding along the inner side of the slider 11 and can be slidably fitted into the inclined vertical groove 9. In order to ensure the tightness of the sliding fit, the inclined vertical groove 9 is formed with a first inclined surface 16, and the inclined portion 12 is provided with a second inclined surface 17 that is adapted to the first inclined surface 16. Through the sliding contact between the first inclined surface 16 and the second inclined surface 17, the inclined portion 12 can move stably within the inclined vertical groove 9.

[0031] Furthermore, the slider 11 has recesses 18 on both sides of its inclined portion 12, and the inner slide 8 has third inclined surfaces 19 on both sides of its inclined vertical groove 9. The recesses 18 are provided with fourth inclined surfaces 20 that are adapted to the third inclined surfaces 19. Through the cooperation of the third inclined surfaces 19 and the fourth inclined surfaces 20, the stability of the sliding cooperation between the slider 11 and the inner slide 8 can be further improved, and the slider 11 can be prevented from deviating or shaking during the sliding process.

[0032] The outer side of the slider 11 is provided with a product contouring part 13 to help the product form. The product contouring part 13 is specifically an inclined guide groove, and the inclination direction of the inclined guide groove is the same as or similar to the inclination direction of the inclined vertical groove 9. This design can better adapt to the forming requirements of the internal undercut structure of the product and ensure the shape accuracy of the undercut part of the product.

[0033] In addition, the rear mold core 7 is provided with a limiting protrusion along the extension direction of the slide groove 10, and the end of the slider 11 is provided with a limiting groove that matches the limiting protrusion. When the slider 11 slides along the slide groove 10, the cooperation between the limiting protrusion and the limiting groove can effectively limit the sliding stroke of the slider 11 and prevent the slider 11 from falling out of the slide groove 10 due to excessive sliding.

[0034] During the product molding process, the inclined portion 12 of the slider 11 abuts against the inclined vertical groove 9 of the inner slide 8, which allows the product contour portion 13 of the slider 11 to be stably positioned on the surface of the rear mold core 7, thereby participating in the molding of the internal undercut structure of the product and ensuring the molding quality of the undercut portion. When demolding is required, the support plate 2 and the rear mold plate 3 will move apart. At this time, the inner slide 8 will move together with the support plate 2 and then separate from the rear mold core 7. As the inner slide 8 moves, the inclined vertical groove 9 will also move, thus providing sufficient space for the inclined portion 12 of the slider 11 to move and no longer abut against the inclined portion 12. Afterward, the ejector assembly 5 moves upward under the drive of the ejector plate 4, forming a pushing effect on the product. During the ejection process, the undercut structure inside the product will contact the product contour portion 13 of the slider 11 and push this part, causing the slider 11 to retract inward along the slide groove 10, thereby achieving separation from the undercut structure of the product and ultimately ensuring that the product can be successfully demolded.

[0035] In summary, this utility model effectively solves the demolding problem of the internal undercut structure of the product. Through the cooperative design of the inner slide 8 and the slider 11, it can adapt to the product structure with internal undercut, avoid the interference problem that may be caused by the traditional inclined ejector structure, and ensure the smooth demolding of the product. At the same time, it effectively improves the product molding quality. The product contour part 13 of the slider 11 can accurately participate in the molding of the internal undercut structure of the product, and achieves smooth separation from the product through inward shrinkage during the demolding process, reducing the occurrence of defects such as product tearing and deformation.

[0036] 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 post-membrane intramural positioning structure, characterized in that, It includes a base plate, a support plate, and a rear template connected in sequence. The base plate is provided with an ejector plate inside its mold foot. The ejector plate is provided with ejector assemblies that pass through the support plate and the rear template in sequence. The rear template is provided with a rear mold core, and a rear mold core is fixedly connected to the rear mold core. An inner slide is fixedly connected to the support plate, and the upper end of the inner slide is mated with the lower end of the rear mold core. The inner part has an inclined vertical groove that is inclined inward along its surface, and the rear mold core has a sliding groove that is horizontally inclined inward along its surface. The sliding groove is connected to the inclined vertical groove, and a slider is slidably fitted in the sliding groove. The inner side of the slider is provided with an inclined part that slides with the inclined vertical groove, and the outer side of the slider is provided with a product contouring part to help the product form. The support plate and the rear template are movably separable. When the support plate and the rear template are separated, the inclined vertical groove has a space to accommodate the inclined portion, allowing the slider to retract along the groove.

2. The post-membrane intramural positioning structure according to claim 1, characterized in that, The product contouring part is an inclined guide groove, and the inclination direction of the inclined guide groove is the same as or approximately the inclination direction of the inclined vertical groove.

3. The post-membrane intramural positioning structure according to claim 1, characterized in that, The rear mold core has a fitting groove along its lower end, and the upper end of the inner part can be slidably fitted into the fitting groove. The inner part and the rear mold core are jointly provided with a slide corresponding to the ejector pin assembly.

4. The post-membrane intramural positioning structure according to claim 1, characterized in that, The inclined portion is formed by protruding along the inner side of the slider. The inclined portion is slidably embedded in the inclined vertical groove. The inclined vertical groove has a first inclined surface, and the inclined portion is provided with a second inclined surface that is adapted to the first inclined surface.

5. The post-membrane intramural positioning structure according to claim 4, characterized in that, The slider has recesses on both sides of its inclined portion, the inner slide has a third inclined surface on both sides of its inclined vertical groove, and the recess is provided with a fourth inclined surface that is adapted to the third inclined surface.

6. The post-membrane intramural positioning structure according to claim 1, characterized in that, The rear mold core is provided with a limiting protrusion along the extension direction of the slide groove, and the end of the slider is provided with a limiting groove that matches the limiting protrusion.

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