Liquid silica gel trace integrated forming mold

Abstract

The utility model discloses a liquid silica gel trace integral forming mold which comprises a rear mold assembly and a front mold assembly correspondingly connected with the rear mold assembly, a plurality of ejection modules are correspondingly arranged in the rear mold assembly and matched with a rear mold core, and a gel injection cold nozzle is correspondingly arranged in the front mold assembly and matched with the rear mold core. The glue injection cold nozzle is matched with the front mold core, and the front mold core is matched with the rear mold core. According to the utility model, cold and hot balance is mainly broken through, trace sealing glue injection is realized, the integral forming period is shortened, the dimensional stability is improved, and the product tolerance is within + / -0.05 mm.

Description

Technical Field

[0001] The utility model relates to the field of rubber mold equipment, in particular to a liquid silicone micro-integrated molding mold. Background Art

[0002] With the rapid development of materials technology, silicone overmolding has become increasingly common in the manufacturing industry. Silicone overmolding involves coating metals, rubber, plastics, and other materials with a layer of liquid silicone. Leveraging the properties of silicone, it offers advantages such as a pleasant feel, aging resistance, excellent release properties, and slip resistance. Silicone overmolding is an ideal packaging material for products.

[0003] However, during the coating process of existing micro-coating products, the cooling time of the silicone molded product is too long due to poor heat dissipation, which increases the time required for the entire product to be molded, resulting in low work efficiency. In addition, the need to flip the coating during the molding process will cause many special situations, such as degumming, product deformation, inability to ensure dimensional accuracy, and damage to the secondary coating. During the silicone heating molding process, due to poor thermal insulation, residual glue will condense in the glue injection pipe, making it difficult to clean. Therefore, it is necessary to provide a liquid silicone micro-integrated molding mold. Utility Model Content

[0004] In order to overcome the defects in the prior art, a liquid silicone micro-integrated molding mold is provided.

[0005] The utility model is achieved through the following solutions:

[0006] A liquid silicone micro-integrated molding mold includes a rear mold component and a front mold component correspondingly connected thereto. A plurality of ejection modules are correspondingly provided in the rear mold component, and the ejection modules match the rear mold core. A cold injection nozzle is correspondingly provided in the front mold component, and the cold injection nozzle matches the front mold core. The front mold core matches the rear mold core.

[0007] The rear mold assembly includes a rear mold base, a rear mold frame and several rear mold cores. The rear mold base is correspondingly connected to the rear mold frame. Several inwardly recessed positioning slots are correspondingly opened in the rear mold frame. The positioning slots are correspondingly connected to the rear mold cores in sequence.

[0008] The ejector module is provided with a plurality of ejector pins, the rear mold frame is provided with an ejector pin hole, the rear mold core is provided with a plurality of pinholes, and the ejector pins pass through the ejector pin holes and the pinholes in sequence.

[0009] A plurality of fixing frames are correspondingly provided on both sides of the ejection module, a plurality of positioning holes are correspondingly opened in the rear mold frame, and the fixing frames are correspondingly inserted into the positioning holes and fixedly connected thereto.

[0010] The rear mold core includes a first rear mold core and a second rear mold core, and the first rear mold core and the second rear mold core are respectively connected to the positioning slots.

[0011] The sides of the rear mold frame are correspondingly provided with a heating system.

[0012] The front mold assembly includes a front mold base, a front mold frame and several front mold cores. The front mold base is correspondingly connected to the front mold frame. Several inwardly recessed fixing grooves are correspondingly opened in the front mold frame. The fixing grooves are correspondingly connected to the glue injection cold nozzles. The glue injection cold nozzles are correspondingly connected to the front mold cores. The front mold frame is also correspondingly provided with an auxiliary heating system and a water system.

[0013] The fixed groove includes a first groove position and a second groove position, and the glue injection cold nozzle includes several top surface cold nozzles and several bottom surface cold nozzles. The top surface cold nozzle is correspondingly arranged in the first groove position, and the bottom surface cold nozzle is correspondingly arranged in the second groove position. The top surface cold nozzle and the bottom surface cold nozzle are respectively connected to the front mold core.

[0014] The height of the top surface cold nozzle is correspondingly smaller than the height of the bottom surface cold nozzle.

[0015] The front mold core includes a glue injection mold core and a plastic injection mold core. The glue injection mold core passes through the top surface cold nozzle and is connected to the first slot correspondingly. The plastic injection mold core passes through the bottom surface cold nozzle and is connected to the second slot correspondingly.

[0016] The beneficial effects of the utility model are:

[0017] 1. The utility model is a liquid silicone micro-integrated molding mold that focuses on breaking through the cold and hot balance to achieve micro-sealing injection, which not only shortens the overall molding cycle, but also improves dimensional stability, making the product tolerance within ±0.05mm.

[0018] 2. The utility model is a liquid silicone micro-integrated molding mold that realizes fully automatic glue injection molding and product shedding, reduces the product molding process, reduces the increase in operators, and reduces production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is an exploded view of a liquid silicone micro-integrated molding mold of the utility model;

[0020] Figure 2 This is an exploded view of the front mold component in a liquid silicone micro-integrated molding mold of the utility model;

[0021] Figure 3 This is an exploded view of the rear mold component in a liquid silicone micro-integrated molding mold of the utility model;

[0022] In the figure: 1 is the rear mold base, 2 is the rear mold frame, 3 is the rear mold core, 31 is the first rear mold core, 32 is the second rear mold core, 4 is the front mold core, 41 is the glue injection mold core, 42 is the injection mold core, 5 is the positioning slot, 6 is the ejector module, 7 is the ejector pin, 8 is the ejector hole, 9 is the pinhole, 10 is the fixing frame, 11 is the positioning hole, 12 is the heating system, 13 is the front mold base, 14 is the front mold frame, 15 is the fixing slot, 151 is the first slot, 152 is the second slot, 16 is the top surface cold nozzle, 17 is the bottom surface cold nozzle, 18 is the auxiliary heating system, and 19 is the water system. DETAILED DESCRIPTION

[0023] The present invention is further described below with reference to the accompanying drawings and specific embodiments:

[0024] like Figure 1 As shown, a liquid silicone micro-integrated molding mold includes a rear mold assembly and a front mold assembly correspondingly connected thereto, and a plurality of ejection modules 6 are correspondingly provided in the rear mold assembly, and the ejection modules 6 match the rear mold core 3. When the product completes the vulcanization time and slides into place, the ejection modules 6 automatically eject the product from the mold core of the rear mold core 3 to help the product demold. The rear mold core 3 is a key operating precision part in the center of the mold, without a glue inlet and with a pinhole. A glue injection cold nozzle is correspondingly provided in the front mold assembly, and the glue injection cold nozzle matches the front mold core 4, and the front mold core 4 matches the rear mold core 3. The utility model is a liquid silicone micro-integrated molding mold that focuses on breaking through the cold and heat balance to achieve micro-sealing glue injection, which not only shortens the overall molding cycle, but also improves the dimensional stability, so that the product tolerance is within ±0.05mm.

[0025] like Figure 3 As shown, the rear mold assembly includes a rear mold base 1, a rear mold frame 2 and a plurality of rear mold cores 3. The rear mold base 1 is correspondingly connected to the rear mold frame 2, and the side of the rear mold frame 2 is correspondingly provided with a heating system 12. A plurality of inwardly recessed positioning slots 5 are correspondingly provided in the rear mold frame 2, and the positioning slots 5 are correspondingly connected to the rear mold cores 3 in sequence. The rear mold core 3 includes a first rear mold core 31 and a second rear mold core 32, and the first rear mold core 31 and the second rear mold core 32 are respectively connected to the positioning slots 5. The utility model reduces the occupied volume and makes the connection compact by fixedly connecting the positioning slots 5 to the rear mold core 3, and on the other hand enhances the structural connection strength and improves the service life.

[0026] The ejector module 6 is provided with a plurality of ejector pins 7, the rear mold frame 2 is provided with ejector pin holes 8, and the rear mold core 3 is provided with a plurality of pinholes 9. The ejector pins 7 are sequentially inserted through the ejector pin holes 8 and the pinholes 9. In the present invention, the ejector pins 7 are arranged in a rectangular array of four rows and three columns. The ejector pins 7 can be inserted into the ejector pin holes 8 and the pinholes 9 one by one, so that the ejector module 6 can eject the product from the mold core of the rear mold core 3.

[0027] Several fixing brackets 10 are provided on either side of the ejector module 6. Several positioning holes 11 are provided in the rear mold frame 2. The fixing brackets 10 are inserted into the positioning holes 11 and fixedly connected thereto. The present invention provides four fixing brackets 10 on either side of the ejector module 6. These fixing brackets 10 are sequentially inserted into the positioning holes 11, strengthening the connection between the rear mold frame 2 and the rear mold base 1, enhancing structural strength, and increasing service life.

[0028] like Figure 2 As shown, the front mold assembly includes a front mold base 13, a front mold frame 14 and a plurality of front mold cores 4. The front mold base 13 is correspondingly connected to the front mold frame 14. A plurality of inwardly recessed fixing grooves 15 are correspondingly provided in the front mold frame 14. The fixing grooves 15 are correspondingly connected to the glue injection cold nozzles. The glue injection cold nozzles are correspondingly connected to the front mold core 4. The front mold frame 14 is also correspondingly provided with an auxiliary heating system 18 and a water system 19. The front mold core 4 is a precision part of the key operation in the center of the mold. It has two top cold nozzles 16 and two bottom cold nozzles 17, a total of four glue inlets. In the present utility model, the front mold core 4 adopts an LSR mold core, which is formed by a PA6+LSR trace 2K one-piece molding. The first shot is: PA6; the second shot is: LSR injection molding is runner point glue injection and LSR cold runner point glue injection.

[0029] The fixed groove 15 includes a first slot 151 and a second slot 152, and the glue injection cold nozzle includes a plurality of top cold nozzles 16 and a plurality of bottom cold nozzles 17. The top cold nozzle 16 is correspondingly arranged in the first slot 151, and the bottom cold nozzle 17 is correspondingly arranged in the second slot 152. The top cold nozzle 16 and the bottom cold nozzle 17 are respectively connected to the front mold core 4. The height of the top cold nozzle 16 is correspondingly smaller than the height of the bottom cold nozzle 17. In the present invention, the top cold nozzle 16, i.e., the top glue inlet, contacts the top product sealing ring and directly dispenses glue on the product. The bottom cold nozzle 17, i.e., the bottom glue inlet, contacts the burr of the product and dispenses glue onto the product through the burr, thereby realizing double-point glue injection on the front and back sides of a product, thereby shortening the overall molding cycle and reducing the risk of glue encapsulation.

[0030] The front mold core 4 includes a glue injection mold core 41 and a molding mold core 42. The glue injection mold core 41 passes through the top surface cold nozzle 16 and connects to the first slot 151. The molding mold core 42 passes through the bottom surface cold nozzle 17 and connects to the second slot 152. In this utility model, two top surface cold nozzles 16 are provided in the first slot 151, and two bottom surface cold nozzles 17 are provided in the second slot 152. The molding mold core 42 is equipped with a turntable. During glue injection, the glue injection mold core 41 remains unchanged, while the molding mold core 42 rotates 180 degrees driven by the turntable, allowing the product to be injection molded. This utility model can achieve simultaneous injection molding of two materials using a single mold.

[0031] During the specific implementation process, liquid silicone rubber simultaneously enters the top and bottom cold nozzles 16, 17. The top cold nozzle 16 then injects the liquid into the mold cavity, while the bottom cold nozzle 17 injects the liquid into the mold cavity through the burr, and then vulcanization molding begins. After vulcanization molding, the spring block in the front mold core 4 activates to position the product in the rear mold core 3. After the rear mold assembly slides into place, the ejector module 6 ejects the product from the rear mold core 3 using ejector pins 7, completing the product's 2K micro-overmolding.

[0032] Although the technical solutions of the present invention have been described and listed in detail, it should be understood that it is obvious to those skilled in the art to make modifications to the above embodiments or adopt equivalent alternatives. These modifications or improvements made without departing from the spirit of the present invention are within the scope of protection required by the present invention.

Claims

1. A liquid silicone micro-integrated molding mold, comprising a rear mold assembly and a front mold assembly connected thereto, characterized in that: A plurality of ejection modules (6) are correspondingly provided in the rear mold assembly, and the ejection modules (6) match the rear mold core (3); a cold injection nozzle is correspondingly provided in the front mold assembly, and the cold injection nozzle matches the front mold core (4); and the front mold core (4) matches the rear mold core (3).

2. A liquid silicone micro-integrated molding mold according to claim 1, characterized in that: The rear mold assembly comprises a rear mold base (1), a rear mold frame (2) and a plurality of rear mold cores (3); the rear mold base (1) is correspondingly connected to the rear mold frame (2); a plurality of inwardly recessed positioning slots (5) are correspondingly provided in the rear mold frame (2); the positioning slots (5) are correspondingly connected to the rear mold cores (3) in sequence.

3. A liquid silicone micro-integrated molding mold according to claim 2, characterized in that: A plurality of ejector pins (7) are correspondingly provided in the ejection module (6), an ejector pin hole (8) is correspondingly provided in the rear mold frame (2), and a plurality of pinholes (9) are correspondingly provided in the rear mold core (3), and the ejector pins (7) pass through the ejector pin holes (8) and the pinholes (9) in sequence.

4. The liquid silicone micro-integrated molding mold according to claim 3, characterized in that: A plurality of fixing frames (10) are correspondingly provided on both sides of the ejection module (6), a plurality of positioning holes (11) are correspondingly opened in the rear mold frame (2), and the fixing frames (10) are correspondingly inserted into the positioning holes (11) and fixedly connected thereto.

5. The liquid silicone micro-integrated molding mold according to claim 2, characterized in that: The rear mold core (3) comprises a first rear mold core (31) and a second rear mold core (32), and the first rear mold core (31) and the second rear mold core (32) are respectively connected to the positioning slots (5).

6. The liquid silicone micro-integrated molding mold according to claim 2, characterized in that: A heating system (12) is correspondingly provided on the side of the rear mold frame (2).

7. The liquid silicone micro-integrated molding mold according to claim 1, characterized in that: The front mold assembly includes a front mold base (13), a front mold frame (14) and a plurality of front mold cores (4); the front mold base (13) is correspondingly connected to the front mold frame (14); a plurality of inwardly recessed fixing grooves (15) are correspondingly provided in the front mold frame (14); the fixing grooves (15) are correspondingly connected to the glue injection cold nozzles; the glue injection cold nozzles are correspondingly connected to the front mold cores (4); and the front mold frame (14) is also correspondingly provided with an auxiliary heating system (18) and a water system (19).

8. The liquid silicone micro-integrated molding mold according to claim 7, characterized in that: The fixed groove (15) includes a first groove position (151) and a second groove position (152); the glue injection cold nozzle includes a plurality of top surface cold nozzles (16) and a plurality of bottom surface cold nozzles (17); the top surface cold nozzles (16) are correspondingly arranged in the first groove position (151); the bottom surface cold nozzles (17) are correspondingly arranged in the second groove position (152); the top surface cold nozzles (16) and the bottom surface cold nozzles (17) are respectively connected to the front mold core (4).

9. The liquid silicone micro-integrated molding mold according to claim 8, characterized in that: The height of the top surface cold nozzle (16) is correspondingly smaller than the height of the bottom surface cold nozzle (17).

10. The liquid silicone micro-integrated molding mold according to claim 8, characterized in that: The front mold core (4) includes a glue injection mold core (41) and a molding mold core (42), wherein the glue injection mold core (41) passes through the top surface cold nozzle (16) and is connected to the first slot (151), and the molding mold core (42) passes through the bottom surface cold nozzle (17) and is connected to the second slot (152).

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