Compression molding structure of silica gel mold

Abstract

The utility model discloses a silica gel mold compression molding structure which comprises an upper mold, a middle mold and a lower mold, the upper mold is matched with the middle mold, the middle mold is located on the lower mold, the middle mold comprises two half-moon middle plates which are consistent in shape, the two half-moon middle plates define the whole middle mold, and a positioning plate is arranged on the lower mold. By adopting the compression molding structure of the silica gel mold, the problems that in the prior art, when the silica gel mold is stripped, the pressing strip needs to be taken firstly, the pressing strip can be taken out due to tight pressing and the assistance of a crowbar, and the joint line of a silica gel product is easy to damage and a large number of products are scrapped due to excessive force during prying are solved.

Description

Technical Field

[0001] This utility model relates to the field of silicone mold technology, and in particular to silicone mold compression molding structure. Background Technology

[0002] Compression molding (also known as compression molding or compression molding) is a process in which powdered, granular, or fibrous plastic is placed into a mold cavity at the molding temperature, and then the mold is closed and pressure is applied to shape and cure it. Compression molding can be used for thermosetting plastics, thermoplastic plastics, and silicone materials. Currently, compression molding molds for silicone products generally consist of an upper mold, a middle mold, and a lower mold. For this type of mold, the product is usually removed from the middle mold.

[0003] When demolding existing silicone molds, the pressure strip needs to be removed first. Because it is pressed tightly, a pry bar is needed to remove it. If too much force is used when prying, the mold line of the silicone product can be damaged, resulting in a large number of products being scrapped. Utility Model Content

[0004] The purpose of this invention is to provide a silicone mold compression molding structure, which solves the problem in the prior art that when demolding a silicone mold, the pressure strip needs to be removed first. Because it is pressed tightly, a pry bar is needed to remove it. However, excessive force is used when prying, which can easily damage the mold line of the silicone product and cause a large number of products to be scrapped.

[0005] To achieve the above objectives, this utility model provides a silicone mold compression molding structure, including an upper mold, a middle mold, and a lower mold. The upper mold is adapted to the middle mold, and the middle mold is located on the lower mold. The middle mold includes two crescent-shaped plates of the same shape, which enclose a whole middle mold. The lower mold is provided with a positioning plate.

[0006] Preferably, the bottom of the upper mold is provided with positioning guide posts, and the two semi-circular plates are provided with positioning guide post grooves that are adapted to the positioning guide posts.

[0007] Preferably, the positioning guide posts are located at the four corners of the bottom of the upper mold.

[0008] Preferably, the positioning guide grooves are located on the two semi-lunar plates and are symmetrically distributed on the two semi-lunar plates.

[0009] Preferably, a torsion spring is provided at the contact end of each of the two semi-circular plates.

[0010] Preferably, the torsion springs are located at both ends of the two semi-circular plates.

[0011] Preferably, the positioning plates are located at the center of both sides of the lower template.

[0012] Therefore, this utility model adopts the above-mentioned silicone mold compression molding structure, which is simple in structure, simplifies the existing silicone mold structure, facilitates production, simplifies the film removal operation, and solves the risk of damaging the mold when removing the pressure strip.

[0013] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the silicone mold compression molding structure of this utility model;

[0015] Figure 2 This is a side view of the silicone mold compression molding structure of this utility model when the mold is not depressurized;

[0016] Figure 3 This is a side view of the silicone mold compression molding structure of this utility model when the mold is depressurized;

[0017] Figure 4 This refers to existing silicone molds.

[0018] Figure Labels

[0019] 1. Upper mold; 2. Middle mold; 3. Lower mold; 4. Positioning guide post; 5. Positioning guide post groove; 6. Half-moon plate; 7. Torsion spring; 8. Positioning plate; 9. Pressure strip. Detailed Implementation

[0020] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0021] Unless otherwise defined, the technical or scientific terms used in this utility model shall have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0022] Example

[0023] like Figure 1As shown, the silicone mold compression molding structure includes an upper mold 1, a middle mold 2, and a lower mold 3. The upper mold 1 is adapted to the middle mold 2, and the middle mold 2 is located on the lower mold 3. The middle mold 2 includes two identical semi-circular plates 6, which together form a whole middle mold 2. The lower mold 3 is provided with positioning plates 8. The positioning plates 8 are located at the center of both sides of the lower mold 3.

[0024] The upper mold 1 has positioning guide pillars 4 at its bottom, and the two semi-circular plates 6 have positioning guide pillar 4 grooves that are adapted to the positioning guide pillars 4. The positioning guide pillars 4 are located at the four corners of the bottom of the upper mold 1. The positioning guide pillar 4 grooves are located on the two semi-circular plates 6 and are symmetrically distributed on the two semi-circular plates 6.

[0025] A torsion spring 7 is provided at the contact end of each of the two semi-circular plates 6. The torsion springs 7 are located at both ends of the two semi-circular plates 6.

[0026] like Figure 4 As shown, when demolding existing silicone molds, the pressure strip 9 needs to be removed first. Because it is pressed tightly, a pry bar is needed to remove it. If too much force is used when prying, the mold line of the silicone product is easily damaged, resulting in a large number of products being scrapped.

[0027] This invention integrates the pressure strip 9 with the upper mold 1, simplifying the mold removal process. Specifically, a positioning guide post 4 is installed at the bottom of the upper mold 1, and a positioning guide post groove 5 corresponding to the positioning guide post 4 is provided on the semi-circular plate 6 of the middle mold 2. When the upper mold 1 and the middle mold 2 are pressed together, the positioning guide post 4 is located within the positioning guide post groove 5. The pressure strip 9 is replaced with a guide post design, eliminating the need for the pressure strip 9 and simplifying the production process.

[0028] A torsion spring 7 is added to each side of the half-moon plate 6. When the mold is opened, after the pressure of the mold is released, the upper mold 1 is lifted by the torsion spring 7, and the middle plate remains in the lower mold 3. Compared with the traditional pressure strip 9 design, which requires a pry bar to pry the pressure strip 9, causing damage to the parting line of the product, the torsion spring 7 designed in this utility model can prevent the product from being pulled and causing damage defects.

[0029] like Figure 2 and Figure 3 As shown, Figure 2 For the mold in the closed state of the flat forming machine, Figure 3 With the pressure removed from the mold, the upper mold is lifted up by the torsion spring, leaving the two menisci on the left and right sides in the lower mold. This solves the problem of separating the upper and middle molds and allows the upper mold to be opened smoothly.

[0030] Therefore, this utility model adopts the above-mentioned silicone mold compression molding structure, which solves the problem in the prior art that when demolding silicone molds, the pressure strip needs to be removed first. Due to the tight compression, a pry bar is needed to remove it. Excessive force during prying can easily damage the mold parting line of the silicone product, resulting in a large number of scrapped products. The simplified operation process reduces the probability of mold damage, improves efficiency, greatly extends the service life of the mold, saves operating costs, and truly achieves cost reduction and efficiency improvement.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solution of this utility model, and these modifications or equivalent substitutions cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of this utility model.

Claims

1. A silicone mold compression molding structure, comprising an upper mold, a middle mold, and a lower mold, characterized in that: The upper mold is adapted to the middle mold, the middle mold is located on the lower mold, the middle mold includes two semi-circular plates of the same shape, the two semi-circular plates surround a whole middle mold, and the lower mold is provided with a positioning plate.

2. The silicone mold compression molding structure according to claim 1, characterized in that: The bottom of the upper mold is provided with positioning guide posts, and the two semi-circular plates are provided with positioning guide post grooves that are adapted to the positioning guide posts.

3. The silicone mold compression molding structure according to claim 2, characterized in that: The positioning guide pillars are located at the four corners of the bottom of the upper mold.

4. The silicone mold compression molding structure according to claim 2, characterized in that: The positioning guide grooves are located on the two semi-lunar plates respectively, and are symmetrically distributed on the two semi-lunar plates.

5. The silicone mold compression molding structure according to claim 1, characterized in that: Each of the two semi-circular plates is provided with a torsion spring at one end where they contact each other.

6. The silicone mold compression molding structure according to claim 5, characterized in that: The torsion springs are located at both ends of the two semi-circular plates.

7. The silicone mold compression molding structure according to claim 1, characterized in that: The positioning plates are located at the center of both sides of the lower template.

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