Die pressing device for silicone rubber processing

Abstract

The utility model discloses a mold pressing device for silicone rubber processing, which relates to the technical field of mold pressing and comprises an external lower mold, a positioning mechanism capable of elastically resetting is arranged on the periphery of the external lower mold, an external upper mold is arranged at the upper end of the external lower mold in an extruding manner, an internal mold mechanism is arranged between the external lower mold and the external upper mold in a pressing manner, and a mold pressing mechanism is arranged between the external lower mold and the external upper mold. According to the mold pressing device, the problems that the shape of an injection molding part of an existing mold pressing device is difficult to adjust, and a gap exists between a demolding pressing block and a mold after injection molding are solved, the inner mold mechanism is arranged, the inner mold mechanism is integrally detachable, the external lower mold and the external upper mold are universal, and the positioning mechanism is arranged, so that the mold pressing device is convenient to use. The inner die mechanism is centered and positioned in cooperation with downward pressing of the external upper die, the positioning pressing block is attached to the external upper die to achieve downward pressing sliding, after die pressing is completed, the sliding rod drives the positioning pressing block to move outwards under the action of the elastic force of the reset assembly, parts in the die extrude one another, gaps are reduced, and the influence on the die pressing quality is prevented.

Description

Technical Field

[0001] This utility model relates to the field of molding technology, specifically to a molding device for processing silicone rubber. Background Technology

[0002] Silicone rubber has excellent properties, including good elasticity, resistance to high and low temperatures, aging resistance, and is non-toxic and odorless. Therefore, it has been widely used in many fields. Silicone rubber compression molding technology is a process that uses molds to press silicone rubber materials into products of specific shapes and sizes. With the continuous development of science and technology, the requirements for the precision, quality and production efficiency of silicone rubber products are getting higher and higher, prompting continuous improvement and innovation in silicone rubber compression molding technology.

[0003] A molding device for processing silicone rubber products, authorized by announcement number CN222156346U, includes an operating table. The operating table has a support frame on its upper surface, and multiple sets of first electric push rods are embedded in the horizontal plate of the support frame. Each first electric push rod has a first telescopic arm below it, and a fixed plate at its lower end. A miniature electric push rod is embedded in the fixed plate below it. The pressing block of the molding device, under the action of the miniature electric push rod, forms a vertical lifting structure with the mold via the second telescopic arm. This allows the individually lifting pressing block to press the top of the silicone rubber product, facilitating demolding of the processed silicone rubber material. A baffle, through a locking plate and an elastic limiting block, engages with the mold in a limiting hole, forming an elastic locking and limiting structure. During demolding, the detachable baffle squeezes and limits the silicone rubber product inside the mold, facilitating demolding. However, the integrated mold design of this molding device makes it difficult to adjust the shape of the injection molded part, and gaps exist between the demolding pressing block and the mold after injection molding, affecting the molding quality.

[0004] To address the aforementioned problems, a molding device for processing silicone rubber is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a molding device for silicone rubber processing, which solves the problems in the prior art where the mold is integrated into the existing molding device, making it difficult to adjust the shape of the injection molded part, and there is a gap between the demolding block and the mold after injection molding, which affects the molding quality of the molding.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a molding device for silicone rubber processing, comprising an outer lower mold, a positioning mechanism that can be elastically reset is provided around the outer lower mold, an outer upper mold is pressed at the upper end of the outer lower mold, an inner mold mechanism is pressed between the outer lower mold and the outer upper mold, the outer lower mold includes a lower module, the positioning mechanism includes a positioning block slidably disposed around the lower module, a slide rod is snapped onto one side of the positioning block, a side frame is fixedly disposed around the lower module, a reset component is fixedly disposed at one end of the slide rod, the slide rod moves and resets along the lower module through the elastic action of the reset component, the inner mold mechanism is disposed between the lower module and the outer upper mold, and the downward pressing of the outer upper mold drives the positioning block to position and fix the inner mold mechanism.

[0007] Preferably, the external lower mold further includes two sets of base frames fixedly disposed at the lower end of the lower module.

[0008] Preferably, the lower module has a center opening for fitting an inner mold mechanism, slide rails are fixedly arranged around the lower module, and insertion rods are fixedly arranged around the placement opening.

[0009] Preferably, the external lower mold further includes upper rods fixedly disposed at the four corners of the lower module, and the upper end of the external upper mold is connected to a stamping cylinder.

[0010] Preferably, an injection tube is fixedly provided at the center of the external upper mold, and inclined pressure blocks are provided around the perimeter of the external upper mold. An inclined opening is provided at the upper end of the positioning pressure block, and the inclined pressure block and the inclined opening correspond vertically.

[0011] Preferably, the side frame is provided with a socket groove.

[0012] Preferably, the reset assembly includes a stop block fixedly disposed at one end of the slide rod, a spring connected to one side of the stop block, and a reset pressure block connected to one side of the spring, wherein the reset pressure block is movably inserted into the slide rod.

[0013] Preferably, the inner mold mechanism includes an embedded lower mold with an embedded placement port, an embedded upper mold is fitted to the upper end of the embedded lower mold, and a silicone rubber injection port is opened at the center of the embedded upper mold aligned with the injection tube.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. The present invention provides a molding device for processing silicone rubber. Through the setting of the inner mold mechanism, the inner mold mechanism is inserted into the lower module, making the inner mold mechanism detachable as a whole. The outer lower mold and the outer upper mold are interchangeable. By changing the shape of the opening inside the inner mold mechanism, the die-casting shape of the silicone rubber can be changed. This solves the problem that the integrated mold setting of the existing molding device makes it difficult to adjust the shape of the injection molded part.

[0016] 2. The present invention provides a molding device for silicone rubber processing. Through the setting of a positioning mechanism, the inner mold mechanism is centered and positioned by the downward pressure of the outer upper mold. The positioning block is fitted with the outer upper mold to achieve downward sliding. After molding is completed, the slide rod drives the positioning block to move outward under the elastic force of the reset component, which facilitates the use and replacement of the inner mold mechanism. This device has a high degree of integration. The internal components of the mold are squeezed against each other, reducing gaps and preventing the impact on the molding quality. It solves the problem that there are gaps between the demolding block and the mold in the existing molding device, which affects the molding quality of the mold. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the overall disassembled structure of the present invention in the molding state;

[0019] Figure 3 This is a schematic diagram of the overall disassembled structure of the present invention in its reset state;

[0020] Figure 4 This is a top view of the structure of the present invention in its reset state;

[0021] Figure 5 This is a top view of the structure of the present invention in the molding state;

[0022] Figure 6 This is a schematic diagram of the overall disassembled structure of this utility model. Figure 1 ;

[0023] Figure 7 This is a schematic diagram of the overall disassembled structure of this utility model. Figure 2 .

[0024] In the diagram: 1. External lower mold; 11. Base frame; 12. Lower module; 121. Placement port; 122. Slide rail block; 123. Insert rod; 13. Upper rod; 2. External upper mold; 21. Injection tube; 22. Angled pressure block; 3. Positioning mechanism; 31. Side frame; 311. Sleeve groove; 32. Slide rod; 33. Positioning pressure block; 331. Angled opening; 34. Reset assembly; 341. Stop block; 342. Spring; 343. Reset pressure block; 4. Inner mold mechanism; 41. Internal lower mold; 42. Internal upper mold; 421. Silicone rubber injection port. Detailed Implementation

[0025] 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.

[0026] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings.

[0027] Combination Figure 1 This utility model discloses a molding device for processing silicone rubber, including an outer lower mold 1, a positioning mechanism 3 that can be elastically reset around the outer lower mold 1, an outer upper mold 2 that is pressed at the upper end of the outer lower mold 1, and an inner mold mechanism 4 that is pressed between the outer lower mold 1 and the outer upper mold 2. The outer lower mold 1 includes a lower module 12, the positioning mechanism 3 includes a positioning block 33 that is slidably disposed around the lower module 12, a slide rod 32 that is snapped onto one side of the positioning block 33, a side frame 31 that is fixedly disposed around the lower module 12, and a reset component 34 that is fixedly disposed at one end of the slide rod 32. The slide rod 32 moves and resets along the lower module 12 through the elastic action of the reset component 34. The inner mold mechanism 4 is disposed between the lower module 12 and the outer upper mold 2. The downward pressing of the outer upper mold 2 drives the positioning block 33 to position and fix the inner mold mechanism 4.

[0028] Specifically, the insertion of the inner mold mechanism 4 onto the lower module 12 makes the inner mold mechanism 4 detachable as a whole. The outer lower mold 1 and the outer upper mold 2 are interchangeable. Changing the shape of the opening inside the inner mold mechanism 4 can change the die-casting shape of the silicone rubber. The positioning mechanism 3 around the outer lower mold 1, together with the downward pressure of the outer upper mold 2, centers the inner mold mechanism 4. The positioning block 33 is fitted with the outer upper mold 2 to achieve downward sliding. After the molding is completed, the slide rod 32 drives the positioning block 33 to move outward under the elastic force of the reset component 34, which facilitates the use and replacement of the inner mold mechanism 4. This device has a high degree of integration. The internal components of the mold squeeze each other, reducing gaps and preventing the impact on the molding quality.

[0029] The present invention will be further described below with reference to the embodiments.

[0030] Example 1:

[0031] Combination Figure 2 and Figure 7 The external lower mold 1 also includes two sets of base frames 11 fixedly installed at the lower end of the lower module 12. The base frames 11 provide double-sided support for the lower module 12, and the base frames 11 also help to raise and cool the mold.

[0032] The lower module 12 has a center opening 121 for fitting the inner mold mechanism 4. Slide rail blocks 122 are fixedly arranged around the lower module 12. Insert rods 123 are fixedly arranged around the placement opening 121. The placement opening 121 provides space for inserting the inner mold mechanism 4. The slide rail block 122 has a slide rail for the positioning pressure block 33. The insert rods 123 are used to insert and fix the inner mold mechanism 4.

[0033] The external lower mold 1 also includes upper rods 13 fixedly installed at the four corners of the lower module 12. The upper end of the external upper mold 2 is connected to the stamping cylinder, and the upper rods 13 realize the four-corner positioning when the external upper mold 2 is pressed down.

[0034] An injection tube 21 is fixedly installed at the center of the outer upper mold 2. An inclined pressure block 22 is provided around the outer upper mold 2. An inclined opening 331 is provided at the upper end of the positioning pressure block 33. The inclined pressure block 22 and the inclined opening 331 are vertically aligned. The injection tube 21 is inserted into the inner mold mechanism 4 to realize the injection of silicone rubber material. When the inclined pressure block 22 is pressed down, it fits with the inclined opening 331 and drives the positioning pressure block 33 to move towards the inner mold mechanism 4 to complete the positioning.

[0035] Example 2:

[0036] Combination Figures 3-7 The side frame 31 is provided with a socket groove 311, which facilitates the insertion of the slide rod 32.

[0037] The reset assembly 34 includes a stop block 341 fixedly disposed at one end of the slide rod 32, a spring 342 connected to one side of the stop block 341, and a reset pressure block 343 connected to one side of the spring 342. The reset pressure block 343 is movably inserted into the slide rod 32. The reset pressure block 343 is set in contact with the side frame 31. The spring 342 provides elastic force, and the stop block 341 drives the slide rod 32 to move outward to reset.

[0038] The inner mold mechanism 4 includes an inner lower mold 41 embedded in the placement port 121. An inner upper mold 42 is attached to the upper end of the inner lower mold 41. The center of the inner upper mold 42 is aligned with the injection tube 21 and has a silicone rubber injection port 421. The inner lower mold 41 is positioned and inserted into the placement port 121. The inner upper mold 42 is positioned by the extrusion of the positioning block 33. The inner lower mold 41 and the inner upper mold 42 have openings in their centers that correspond to the shape of the silicone rubber workpiece. The inner lower mold 41 and the inner upper mold 42 are arranged in upper and lower layers to facilitate the demolding of the silicone rubber workpiece.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A molding device for processing silicone rubber, comprising an external lower mold (1), characterized in that: The outer lower mold (1) is provided with a positioning mechanism (3) that can be elastically reset around its perimeter. An outer upper mold (2) is provided at the upper end of the outer lower mold (1). An inner mold mechanism (4) is provided between the outer lower mold (1) and the outer upper mold (2). The external lower mold (1) includes a lower module (12), and the positioning mechanism (3) includes a positioning block (33) slidably disposed around the lower module (12). A slide rod (32) is snapped onto one side of the positioning block (33). A side frame (31) is fixedly disposed around the lower module (12). A reset component (34) is fixedly disposed at one end of the slide rod (32). The slide rod (32) moves and resets along the lower module (12) through the elastic action of the reset component (34). The inner mold mechanism (4) is disposed between the lower module (12) and the external upper mold (2). The downward pressure of the external upper mold (2) drives the positioning block (33) to position and fix the inner mold mechanism (4).

2. The molding device for silicone rubber processing according to claim 1, characterized in that: The external lower mold (1) also includes two sets of base frames (11) fixedly installed at the lower end of the lower module (12).

3. The molding device for silicone rubber processing according to claim 1, characterized in that: The lower module (12) has a center opening (121) for fitting the inner mold mechanism (4), and slide blocks (122) are fixedly arranged around the lower module (12). Insert rods (123) are fixedly arranged around the placement opening (121).

4. The molding device for silicone rubber processing according to claim 1, characterized in that: The external lower mold (1) also includes upper rods (13) fixedly installed at the four corners of the lower module (12), and the upper end of the external upper mold (2) is connected to the stamping cylinder.

5. The molding device for silicone rubber processing according to claim 1, characterized in that: The outer upper mold (2) is fixedly provided with an injection tube (21) at its center. The outer upper mold (2) is provided with inclined pressure blocks (22) around its perimeter. The upper end of the positioning pressure block (33) is provided with an inclined opening (331). The inclined pressure block (22) and the inclined opening (331) are vertically corresponding.

6. The molding device for silicone rubber processing according to claim 1, characterized in that: The side frame (31) is provided with a sleeve groove (311).

7. The molding device for silicone rubber processing according to claim 1, characterized in that: The reset assembly (34) includes a stop block (341) fixedly disposed at one end of the slide rod (32), a spring (342) connected to one side of the stop block (341), and a reset pressure block (343) connected to one side of the spring (342). The reset pressure block (343) is movably inserted into the slide rod (32).

8. A molding device for processing silicone rubber according to claim 3, characterized in that: The inner mold mechanism (4) includes an embedded lower mold (41) with an embedded placement port (121), and an embedded upper mold (42) is attached to the upper end of the embedded lower mold (41). The center of the embedded upper mold (42) is aligned with the injection tube (21) and has a silicone rubber injection port (421).

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