Multi-hardness silica gel forming mold

Abstract

The utility model relates to the technical field of forming dies, in particular to a multi-hardness silica gel forming die which comprises a bottom plate and a lower die plate fixedly arranged on the bottom plate, the lower die plate is provided with a forming boss, and a pair of placing grooves arranged in a mirror image mode are formed in the forming boss. The mold further comprises an insert capable of being placed in the containing groove and an upper mold plate used in cooperation with the lower mold plate, a groove allowing the forming boss to be embedded therein is formed in the upper mold plate, and a pair of through holes communicated with the groove are further formed in the upper mold plate. A gap for forming the 50-degree silica gel piece is formed between the insert and the top of the groove, and the through hole is communicated with the gap; the first material pressing plate and the second material pressing plate are placed at the top of the upper die plate; the liquid silica gel can be connected with a corresponding part after being solidified and formed, subsequent bonding treatment is not needed, forming of multi-hardness and dual materials is achieved, the production process is simplified, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of molding molds, in particular to a multi-hardness silicone molding mold. Background Art

[0002] The components of the existing VR dust cover are plastic parts, 50-degree silicone parts and 10-degree silicone parts. When producing the VR dust cover, it is necessary to use a specific mold to process each component; after the processing of each component is completed, it is bonded and combined to complete the production of the VR dust cover.

[0003] However, the existing silicone molding mold can only mold silicone parts of one hardness at a time. When it is necessary to produce products with silicone of different hardness (such as 50-degree silicone parts and 10-degree silicone parts), multiple molding molds are required to mold silicone parts of different hardness separately. However, the processing steps of separately processing silicone parts of different hardness and then combining them are relatively cumbersome; and the combination method of bonding by glue makes the connection effect of each component poor. Therefore, a multi-hardness silicone molding mold is now used to solve the above technical problems. Utility Model Content

[0004] The utility model aims to provide a multi-hardness silicone molding mold to address the deficiencies of the prior art, so as to solve the technical problem that the process of separately processing various components and then combining them is relatively cumbersome.

[0005] To achieve the above purpose, the technical solution of the utility model is as follows:

[0006] A multi-hardness silicone molding mold, comprising a bottom plate and a lower template fixedly arranged on the bottom plate, the lower template being provided with a molding boss, and a pair of placement grooves arranged in mirror image on the molding boss; further comprising an insert that can be placed in the placement groove and an upper template used in conjunction with the lower template, the upper template being provided with a groove for the molding boss to be embedded, and a pair of through holes connected to the groove being provided on the upper template; a gap for molding a 50-degree silicone piece is formed between the insert and the top of the groove, and the through hole is connected to the gap;

[0007] It also includes a first pressing plate and a second pressing plate placed on the top of the upper template. The first pressing plate is used to squeeze the liquid 50-degree silicone poured into the through hole into the gap between the insert and the top of the groove, and the second pressing plate is used to squeeze the liquid 10-degree silicone poured into the through hole.

[0008] Furthermore, a supporting portion for positioning and supporting the plastic part is provided on the molding boss, and the supporting portion is placed on the peripheral side of the placement groove.

[0009] Furthermore, a limiting member for limiting the position of the plastic member is slidably provided on the lower template.

[0010] Furthermore, a pair of first extrusion parts that can be embedded in the through holes are provided on the first pressing plate, and the first extrusion parts are used to extrude liquid 50-degree silicone rubber; a flattening protrusion for flattening the top of the 50-degree silicone rubber piece is provided at the bottom of the first extrusion part.

[0011] Furthermore, a pair of second extrusion parts that can be embedded in the through holes are provided on the second pressing plate, and a molding groove for molding 10-degree silicone is provided at the bottom of the second extrusion part, and a gap for molding 50-degree silicone parts is connected to the molding groove.

[0012] Furthermore, a demoulding mechanism for ejecting the inserts and the molded products is provided on the bottom plate.

[0013] Furthermore, the demoulding mechanism includes a fixed column arranged between the base plate and the lower template, the fixed column is arranged vertically, and a lifting plate is slidably provided on the fixed column; a plurality of ejectors for separating the plastic parts from the supporting part are provided on the lifting plate, and an ejector block for ejecting the insert from the placement groove is also fixedly provided on the lifting plate.

[0014] Furthermore, a plurality of second springs are provided between the lifting plate and the lower template to reset the lifting plate.

[0015] Furthermore, guide columns are arranged vertically on the lower template, and the upper template can slide on the guide columns.

[0016] The beneficial effects of the utility model are as follows: when in use, firstly, a pair of inserts are respectively placed in different placement grooves, and then the plastic part is placed on the molding boss, and then the upper template and the lower template are molded together, and the molding boss is embedded in the groove, so that a gap for molding the 50-degree silicone part is formed between the insert and the top of the groove; liquid 50-degree silicone is poured into the through hole, and a first pressing plate is placed above the upper mold to apply a downward force to it, and the liquid 50-degree silicone is squeezed into the gap between the insert and the top of the groove through the first pressing plate, and after the liquid 50-degree silicone is solidified, the molding of the 50-degree silicone part is completed, and the 50-degree silicone The rubber part is connected to the plastic part; in addition, the first pressing plate is moved away from the upper mold, and the liquid 10-degree silicone is poured into the through hole. Finally, the second pressing plate is placed above the upper mold to apply downward force to it, and the liquid 10-degree silicone poured into the through hole is squeezed. After the liquid 10-degree silicone solidifies, the 10-degree silicone part is formed, and the 10-degree silicone part 16 is connected to the 50-degree silicone part 15, and the processing of the VR dust cover is completed; after the liquid silicone solidifies, it will be connected to the corresponding parts, and no subsequent bonding treatment is required, so that multi-hardness and dual-material molding can be achieved to simplify the production process and improve production efficiency. In addition, the hardness of the 50-degree silicone part and the 10-degree silicone part is different, which achieves the purpose of connecting silicone parts of different hardness in one mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0018] Figure 2 It is a partial structural schematic diagram of the utility model.

[0019] Figure 3 It is an exploded view of the utility model.

[0020] Figure 4 This is an exploded view of the utility model from another perspective.

[0021] Figure 5 It is a schematic structural diagram of the first pressing plate and the second pressing plate of the utility model.

[0022] Figure 6 This is a cross-sectional view of the 50-degree silicone molding of the utility model.

[0023] Figure 7 It is an enlarged view of part A of the utility model.

[0024] Figure 8 This is a cross-sectional view of the 10-degree silicone molding of the utility model.

[0025] Fig. 9 It is an enlarged view of part B of the utility model.

[0026] Fig.10 It is a structural schematic diagram of the demoulding mechanism of the utility model.

[0027] Reference numerals include:

[0028] 1. Bottom plate; 2. Lower template; 201. Guide column; 3. Molding boss; 4. Placement groove; 5. Support part; 6. Insert; 7. Limit part; 8. Upper template; 9. Groove; 10. Through hole; 11. First pressing plate; 111. First extrusion part; 112. Flattening protrusion; 113. First spring; 12. Second pressing plate; 121. Second extrusion part; 122. Molding groove; 13. Demolding mechanism; 131. Fixed column; 132. Lifting plate; 133. Second spring; 134. Ejector pin; 135. Ejector block; 14. Plastic part; 15. 50 degree silicone part; 16. 10 degree silicone part. DETAILED DESCRIPTION

[0029] The following is a detailed description of a multi-hardness silicone molding mold of the utility model in conjunction with the accompanying drawings.

[0030] The components of VR dust cover are as follows Figure 3 As shown, there are plastic part 14, 50 degree silicone part 15 and 10 degree silicone part 16 respectively. The 50 degree silicone part 15 is connected to the plastic part 14, and the 10 degree silicone part 16 is connected to the 50 degree silicone part 15; 50 degree and 10 degree are both hardness parameters of the silicone part.

[0031] like Figure 1-4 As shown, an embodiment of a multi-hardness silicone molding mold of the utility model includes a base plate 1 and a lower template 2 fixedly arranged on the base plate 1, wherein the lower template 2 is provided with a molding boss 3, and a pair of mirror-arranged placement grooves 4 are provided on the molding boss 3; the molding mold also includes an insert 6 that can be placed in the placement groove 4 and an upper template 8 for use with the lower template 2, the upper template 8 is provided with a groove 9 for the molding boss 3 to be embedded, and the upper template 8 is also provided with a pair of through holes 10 connected to the groove 9, and the position of the through hole 10 corresponds to the insert 6. After the upper mold 8 and the lower mold 2 are molded together, a gap is formed between the insert 6 and the top of the groove 9 for molding the 50-degree silicone piece 15, and the gap is connected to the through hole 10; in addition, a support portion 5 for placing the plastic piece 14 is provided on the molding boss 3, and the support portion 5 is placed on the peripheral side of the placement groove 4. Under the action of the support portion 5, the plastic piece 14 is placed at a designated position on the molding boss 3, and the support portion 5 can also play a positioning effect on the plastic piece 14.

[0032] In order to realize the molding of multi-hardness silicone, the silicone molding mold also includes a first pressing plate 11 and a second pressing plate 12 placed on the top of the upper template 8. The first pressing plate 11 is used to squeeze the liquid 50-degree silicone poured into the through hole 10 into the gap between the insert 6 and the top of the groove 9, and the second pressing plate 12 is used to squeeze the liquid 10-degree silicone poured into the through hole 10. Specifically, firstly place a pair of inserts 6 into different placement grooves 4 respectively, and then place the plastic part 14 on the support part 5, and then the upper template 8 and the lower template 2 are molded together, and the molding boss 3 is embedded in the groove 9, so that a gap for molding the 50-degree silicone part 15 is formed between the insert 6 and the top of the groove 9; pour the liquid 50-degree silicone into the through hole 10, and place the first pressing plate 11 above the upper mold 8 to apply a downward force to it, and use the first pressing plate 11 to squeeze the liquid 50-degree silicone into the gap between the insert 6 and the top of the groove 9, and wait for the liquid After the 50-degree silicone gel solidifies, the molding of the 50-degree silicone part 15 is completed, and the 50-degree silicone part 15 is connected to the plastic part 14; in addition, the first pressing plate is first moved away from the upper mold 8, and the liquid 10-degree silicone gel is poured into the through hole 10. Finally, the second pressing plate 12 is placed above the upper mold 8 to apply a downward force to it, and the liquid 10-degree silicone gel poured into the through hole 10 is squeezed. After the liquid 10-degree silicone gel solidifies, the 10-degree silicone part 16 is formed, and the 10-degree silicone part 16 is connected to the 50-degree silicone part 15, and the processing of the VR dust cover is completed. The hardness of the 50-degree silicone part 15 and the 10-degree silicone part 16 is different, and the purpose of connecting silicone parts of different hardness in one mold is achieved. In addition, the excess liquid silicone that is squeezed out forms burrs, which are processed through the subsequent burr removal process. After the liquid silicone solidifies and takes shape, it will be connected to the corresponding parts without the need for subsequent bonding treatment, thus achieving multi-hardness and dual-material molding to simplify the production process and improve production efficiency.

[0033] Furthermore, after the plastic part 14 is placed on the molding boss 3, in order to prevent the position of the plastic part 14 from shifting, a limiter 7 for limiting the position of the plastic part 14 is slidably provided on the lower template 2; the plastic part 14 is placed on the support portion 5, and then the limiter 7 is pushed to slide in the direction close to the plastic part 14. After the limiter 7 slides to the plastic part 14 in contact, the plastic part 14 is pressed to achieve the effect of limiting the position of the plastic part 14. During the subsequent operation, the position of the plastic part 14 shifts; when the plastic part 14 needs to be removed from the support portion 5, the limiter 7 is pushed to slide in the direction away from the plastic part 14. In addition, in order to enable the molding boss 3 to be accurately embedded in the groove 9, a guide column 201 is vertically arranged on the lower template 2, and the upper template 8 can slide on the guide column 201. When the upper template 8 and the lower template 2 are molded, the guide column 201 is used for guiding processing to improve the mold clamping accuracy.

[0034] like Figure 5-9 As shown, a pair of first extrusion parts 111 that can be embedded in the through hole 10 are provided on the first pressing plate 11. The first extrusion parts 111 are used to extrude liquid 50-degree silicone and pour the liquid 50-degree silicone into the through hole 10. The first pressing plate 11 is placed above the upper mold 8 to exert a downward force on it, and the first extrusion parts 111 are embedded in the through hole 10. The liquid 50-degree silicone is squeezed into the gap between the insert 6 and the top of the groove 9 through the first extrusion parts 111. In addition, a flattening protrusion 112 for flattening the top of the 50-degree silicone piece 15 is provided at the bottom of the first extrusion part 111; under the action of the flattening protrusion 112, the top of the molded 50-degree silicone piece 15 is made to be a smooth plane, so as to facilitate the subsequent connection of the 50-degree silicone piece 15 with the 10-degree silicone piece 16, and also improve the connection strength between the two.

[0035] A pair of second extrusion parts 121 which can be embedded in the through hole 10 are provided on the second pressing plate 12. The second extrusion parts 121 are used to extrude the liquid 10-degree silicone rubber. A molding groove 122 for molding the 10-degree silicone rubber 16 is provided at the bottom of the second extrusion part 121. A gap is provided between the insert 6 and the top of the groove 9. The gap is connected to the molding groove 122 (such as Fig. 9 As shown). After the liquid 10-degree silicone is poured into the through hole 10, the second pressing plate 12 is placed above the upper mold 8 to apply a downward force thereto, and the second extrusion portion 121 extrudes the liquid 10-degree silicone. After the liquid 10-degree silicone solidifies, the 10-degree silicone piece 16 is formed, and the 10-degree silicone piece 16 is connected to the 50-degree silicone piece 15.

[0036] Additionally, a first spring 113 (eg, Figure 4 As shown in the figure, after pressing the first pressing plate 11 (or the second pressing plate 12), the first spring 113 is compressed, and the first extrusion portion 111 (or the second extrusion portion 121) is embedded in the through hole 10. After the first pressing plate 11 (or the second pressing plate 12) is stopped, under the action of compressing the first spring 113, the first pressing plate 11 (or the second pressing plate 12) automatically resets upward, so that the first extrusion portion 111 (or the second extrusion portion 121) automatically disengages from the through hole 10. In addition, a demoulding mechanism 13 for ejecting the insert 6 and the molded product is provided on the base plate 1. After the mold is opened (i.e., the second pressing plate 12 is first removed from the upper template 8, and then the upper template 8 is removed from the lower template 2), the molded product is separated from the molding boss 3 through the demoulding mechanism 13, and the insert 6 is separated from the placement groove 4. Finally, the product and the insert 6 are moved to the workbench to blow out the product (i.e., the product and the insert 6 are separated), thereby completing the processing of the VR dust cover.

[0037] like Fig.10 As shown, the demoulding mechanism 13 includes a fixed column 131 arranged between the bottom plate 1 and the lower template 2, the fixed column 131 is arranged vertically, and a lifting plate 132 is slidably provided on the fixed column 131, under the action of the fixed column 131, the lifting plate 132 can move up and down between the bottom plate 1 and the lower template 2; wherein, a plurality of ejectors 134 for separating the plastic part 14 from the support portion 5 are fixedly provided on the lifting plate 132, and a ejector block 135 for ejecting the insert 6 from the placement groove 4 is also fixedly provided on the lifting plate 132. After the 50-degree silicone part 15 and the 10-degree silicone part 16 are formed, the second pressing plate 12 is first removed from the upper template 8, and then the upper template 8 is removed from the lower template 2, and then the lifting plate 132 is driven to move upward, and the ejector pins 134 and the ejector block 135 move simultaneously, the ejector pins 134 separate the plastic part 14 from the support portion 5, and the ejector block 135 ejects the insert 6 from the placement groove 4. In addition, in order to enable the lifting plate 132 to automatically reset, a plurality of second springs 133 are provided between the lifting plate 132 and the lower template 2. When the lifting plate 132 is driven to move upward, the second springs 133 are compressed. When the lifting plate 132 stops being driven, the lifting plate 132 is reset downward under the action of the compressed second springs 133.

[0038] In summary, it can be seen that the utility model has the above-mentioned excellent characteristics, which can enhance the performance unprecedented in the prior art and become a product with great practical value.

[0039] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The contents of this specification should not be understood as limiting the present invention.

Claims

1. A multi-hardness silicone molding mold, characterized in that: The invention comprises a bottom plate (1) and a lower template (2) fixedly arranged on the bottom plate (1), wherein the lower template (2) is provided with a molding boss (3), and the molding boss (3) is provided with a pair of placement grooves (4) arranged in a mirror image; it also comprises an insert (6) which can be placed in the placement groove (4) and an upper template (8) used in conjunction with the lower template (2), wherein the upper template (8) is provided with a groove (9) in which the molding boss (3) can be embedded, and the upper template (8) is also provided with a pair of through holes (10) connected to the groove (9); a gap for molding a 50-degree silicone member (15) is formed between the insert (6) and the top of the groove (9), and the through hole (10) is connected to the gap; It also includes a first pressing plate (11) and a second pressing plate (12) placed on the top of the upper template (8), the first pressing plate (11) being used to squeeze the liquid 50-degree silicone poured into the through hole (10) into the gap between the insert (6) and the top of the groove (9), and the second pressing plate (12) being used to squeeze the liquid 10-degree silicone poured into the through hole (10).

2. A multi-hardness silicone molding mold according to claim 1, characterized in that: A support portion (5) for positioning and supporting the plastic part (14) is provided on the molding boss (3), and the support portion (5) is placed on the peripheral side of the placement groove (4).

3. A multi-hardness silicone molding mold according to claim 2, characterized in that: A limiting member (7) for limiting the position of the plastic member (14) is slidably provided on the lower template (2).

4. The multi-hardness silicone molding mold according to claim 1, characterized in that: A pair of first extrusion parts (111) that can be embedded in the through holes (10) are provided on the first pressing plate (11), and the first extrusion parts (111) are used to extrude liquid 50-degree silicone rubber; a flattening protrusion (112) for flattening the top of the 50-degree silicone rubber piece (15) is provided at the bottom of the first extrusion part (111).

5. The multi-hardness silicone molding mold according to claim 1, characterized in that: A pair of second extrusion parts (121) that can be embedded in the through holes (10) are provided on the second pressing plate (12), and a molding groove (122) for molding the 10-degree silicone rubber (16) is provided at the bottom of the second extrusion part (121), and a gap for molding the 50-degree silicone rubber part (15) is connected to the molding groove (122).

6. The multi-hardness silicone molding mold according to claim 2, characterized in that: A demoulding mechanism (13) for ejecting the insert (6) and the molded product is provided on the bottom plate (1).

7. The multi-hardness silicone molding mold according to claim 6, characterized in that: The demoulding mechanism (13) comprises a fixed column (131) arranged between the bottom plate (1) and the lower mold plate (2), the fixed column (131) being arranged vertically, and a lifting plate (132) being slidably arranged on the fixed column (131); a plurality of ejector pins (134) for detaching the plastic part (14) from the supporting part (5) are arranged on the lifting plate (132), and an ejector block (135) for ejecting the insert (6) from the placement groove (4) is also fixedly arranged on the lifting plate (132).

8. The multi-hardness silicone molding mold according to claim 7, characterized in that: A plurality of second springs (133) for returning the lifting plate (132) to the original position are arranged between the lifting plate (132) and the lower mold plate (2).

9. The multi-hardness silicone molding mold according to claim 1, characterized in that: A guide column (201) is arranged vertically on the lower template (2), and the upper template (8) can slide on the guide column (201).

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