Dual core silicon rubber two-shot mold

Abstract

This utility model discloses a dual-core, two-ejection silicone molding die, comprising an upper mold, a lower mold, an outer mold core, an inner mold core, an upper lifting plate, and a lower lifting plate. The upper mold has an upper mold groove, and the lower mold has a lower mold groove. The outer mold core is inserted into the lower mold groove, and the inner mold core is inserted into the outer mold core. The upper mold groove, lower mold groove, outer mold core, and inner mold core form a molding cavity corresponding to the silicone product to be molded. The outer mold core is located on the upper lifting plate, and the inner mold core is located on the lower lifting plate. The upper lifting plate is positioned above the lower lifting plate. This utility model allows for two-stage ejection of the two mold cores, enabling smooth demolding even for complex products. The addition of an elastic element allows for pre-ejection, preventing direct ejection from breaking the product. This utility model improves production efficiency, significantly reduces production costs, and increases product yield.

Description

Technical Field

[0001] This utility model relates to the field of silicone production technology, and in particular to a silicone molding die with a double core and two ejection stages. Background Technology

[0002] In the current production of silicone products, in order to make the products more aesthetically pleasing, the products are designed to be more complex, which increases the difficulty of demolding; in order to reduce costs, several products are designed into one product, which also has the problem of difficult demolding after molding. Utility Model Content

[0003] The technical problem to be solved by this utility model embodiment is to provide a silicone molding die with a double core and two ejection stages to facilitate demolding.

[0004] To solve the above-mentioned technical problems, this utility model embodiment proposes a silicone molding die with two cores and two ejections, including an upper mold, a lower mold, an outer core, an inner core, an upper lifting plate, and a lower lifting plate. The upper mold is provided with an upper mold groove, and the lower mold is provided with a lower mold groove. The outer core is correspondingly inserted into the lower mold groove, and the inner core is correspondingly inserted into the outer core. The upper mold groove, the lower mold groove, the outer core, and the inner core form a molding cavity corresponding to the silicone product to be molded. The outer core is located on the upper lifting plate, and the inner core is located on the lower lifting plate. The upper lifting plate is located above the lower lifting plate.

[0005] Furthermore, an elastic element is provided between the upper and lower lifting plates.

[0006] Furthermore, it also includes guide columns, with the lower mold, upper lifting plate, and lower lifting plate passing through the guide columns.

[0007] Furthermore, it also includes a base, which is U-shaped, with the lower mold set on the base, the upper lifting plate and the lower lifting plate respectively set between the left and right sides of the base, and the guide column set on the base.

[0008] Furthermore, the front and rear ends of the lower lifting plate extend beyond the base.

[0009] Furthermore, it also includes a limiting pin, which is correspondingly inserted between the lower mold and the base, and the outer mold core is provided with a limiting groove corresponding to the limiting pin.

[0010] Furthermore, the upper mold is provided with a positioning block, and the lower mold is provided with a corresponding positioning groove.

[0011] Furthermore, the distance between the upper platen and the lower mold is greater than the height of the forming cavity.

[0012] Furthermore, a guide section is also erected on the base, which passes through the upper and lower lifting plates.

[0013] The beneficial effects of this utility model are as follows: the two mold cores of this utility model can be ejected twice, front and back, and can be successfully demolded even for existing complex products; this utility model adds an elastic element, which is used for pre-ejection to avoid direct ejection breaking the product; this utility model can improve production efficiency, greatly reduce production costs, and increase product yield. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of a silicone molding die with a dual-core, two-stage ejection according to an embodiment of this utility model.

[0015] Figure 2 This is a three-dimensional structural diagram of the upper mold according to an embodiment of the present invention.

[0016] Figure 3 This is a three-dimensional structural diagram of the upper mold of the double-core silicone molding die of this utility model embodiment when the upper mold is removed.

[0017] Figure 4 This is a perspective view of a portion of the structure of a silicone molding die with a dual-core, two-stage ejection mechanism, according to an embodiment of this utility model.

[0018] Figure 5 This is a perspective view of a portion of the structure of a silicone molding die with a dual-core, two-stage ejection mechanism, according to an embodiment of this utility model.

[0019] Explanation of icon numbers

[0020] Upper mold 10, upper mold groove 11, positioning block 12, handle 13, lower mold 20, lower mold groove 21, positioning groove 22, outer mold core 30, inner mold core 31, upper lifting plate 32, lower lifting plate 33, elastic element 34, guide post 35, limiting groove 36, base 40, limiting pin 41, guide part 42, silicone product 50. Detailed Implementation

[0021] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other. The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] In this embodiment of the invention, directional indicators (such as up, down, left, right, front, back, etc.) are only used to explain the relative positional relationship and movement of the components in a specific posture (as shown in the attached figure). If the specific posture changes, the directional indicators will also change accordingly.

[0023] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0024] Please refer to Figures 1-5 The dual-core, double-ejection silicone molding die of this utility model includes an upper mold (i.e., upper template), a lower mold (i.e., lower template), an outer mold core, an inner mold core, an upper lifting plate, and a lower lifting plate.

[0025] The upper mold has an upper mold groove, and the lower mold has a lower mold groove. The outer mold core is inserted into the lower mold groove, and the inner mold core is inserted into the outer mold core. The upper mold groove, lower mold groove, outer mold core, and inner mold core form a molding cavity corresponding to the silicone product to be molded. The outer mold core is located on the upper lifting plate, and the inner mold core is located on the lower lifting plate. The upper and lower lifting plates also prevent the outer and inner mold cores from being pulled out during demolding. The upper lifting plate is located above the lower lifting plate. An elastic element is provided between the upper and lower lifting plates. The elastic element can be a spring, which is mounted on a pin in practice. In practice, there are multiple sets of upper mold grooves, lower mold grooves, outer mold cores, and inner mold cores, forming multiple molding cavities to improve production efficiency.

[0026] During demolding, the upper mold (preferably with a handle) is removed, and the lower lifting plate is raised. Under the action of the elastic element, the upper and lower lifting plates are raised together. When the upper lifting plate reaches the bottom of the lower mold, the upper lifting plate is stopped, and the lower lifting plate continues to rise until the silicone product is completely demolded.

[0027] In one implementation, the dual-core, two-ejection silicone molding die also includes guide pillars, with the lower mold, upper lifting plate, and lower lifting plate passing through the guide pillars. The guide pillars guide the movement of the upper and lower lifting plates.

[0028] In one implementation, the dual-core, two-ejection silicone molding die also includes a base. The base is U-shaped, with the lower mold mounted on it. An upper lifting plate and a lower lifting plate are positioned on the left and right sides of the base, respectively, and guide pillars are mounted on the base. The base is used to mount the lower mold and the lower lifting plate. During injection molding, the lower lifting plate is positioned on the base. After injection molding is completed, the upper mold is removed, and the lower lifting plate is lifted for demolding.

[0029] In one implementation, the upper and lower lifting plates extend beyond the base at both ends to facilitate lifting the base.

[0030] In one implementation, the dual-core, two-ejection silicone molding die also includes a limiting pin, which is inserted between the lower mold and the base. The outer mold core has a limiting groove corresponding to the limiting pin. In practice, there are multiple limiting pins.

[0031] In one implementation, the upper mold is provided with a positioning block, and the lower mold is provided with a corresponding positioning groove. The cooperation between the positioning block and the positioning groove facilitates the positioning between the upper and lower molds. In specific implementations, there are multiple sets of positioning blocks and positioning grooves.

[0032] As one implementation method, the distance between the upper platen and the lower mold is greater than the height of the molding cavity, so that the silicone product after injection molding can be completely demolded, and it is also convenient for users to clean the burrs.

[0033] In one implementation, a guide portion is also provided on the base, which passes through the upper and lower lifting plates.

[0034] 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 silicone molding die with a dual-core, double-ejection design, characterized in that, It includes an upper mold, a lower mold, an outer mold core, an inner mold core, an upper lifting plate, and a lower lifting plate. The upper mold has an upper mold groove, and the lower mold has a lower mold groove. The outer mold core is inserted into the lower mold groove, and the inner mold core is inserted into the outer mold core. The upper mold groove, the lower mold groove, the outer mold core, and the inner mold core form a molding cavity corresponding to the silicone product to be molded. The outer mold core is set on the upper lifting plate, and the inner mold core is set on the lower lifting plate. The upper lifting plate is located above the lower lifting plate.

2. The bi-mold core two-shot silicone forming mold of claim 1, wherein, An elastic element is provided between the upper and lower lifting plates.

3. The bi-mold core two-shot silicone forming mold of claim 1, wherein, It also includes guide columns, with the lower mold, upper lifting plate, and lower lifting plate passing through the guide columns.

4. The bi-mold core two-shot silicone forming mold of claim 3, wherein, It also includes a base, which is U-shaped. The lower mold is placed on the base, and the upper and lower lifting plates are respectively placed between the left and right sides of the base. The guide pillars are placed on the base.

5. The bi-mold core two-shot silicone forming mold of claim 4, wherein, The front and rear ends of the lower lifting plate extend beyond the base.

6. The silicone molding die with dual cores and double ejection as described in claim 4, characterized in that, It also includes a limit pin, which is inserted between the lower mold and the base, and the outer mold core is provided with a limit groove corresponding to the limit pin.

7. The silicone molding die with dual cores and double ejection as described in claim 1, characterized in that, The upper mold is equipped with a positioning block, and the lower mold is equipped with a corresponding positioning groove.

8. The silicone molding die with dual cores and double ejection as described in claim 1, characterized in that, The distance between the upper platen and the lower mold is greater than the height of the forming cavity.

9. The silicone molding die with dual cores and double ejection as described in claim 1, characterized in that, The base is also equipped with a guide section, which passes through the upper and lower lifting plates.

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