Forming die for liquid silica gel

Abstract

The utility model relates to the technical field of silica gel molds, and discloses a liquid silica gel forming mold. The liquid silica gel forming mold comprises a bottom plate, a lifting piston is fixedly installed above the bottom plate, a movable mold is fixedly installed at the top end of the lifting piston, a limiting column is fixedly installed above the movable mold, a supporting column is fixedly installed above the bottom plate, a fixed mold is fixedly installed above the supporting column, and the fixed mold is fixedly installed above the supporting column. A top plate is fixedly installed above the fixed mold, a glue injection opening is formed in the upper portion of the top plate in a penetrating mode, a water outlet pipe is installed on the front side of the top plate in a penetrating mode, the bottom end of the water outlet pipe is flush with the bottom face of the top plate, and the bottom end of the water outlet pipe is higher than the bottom end of a water inlet pipe. The cooling water can absorb heat of the silica gel through the fixed mold in the fixed mold, so that the silica gel is rapidly cooled, the solidification time of the silica gel is shortened, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to silica gel mould technical field, concretely is a kind of forming mould of liquid silicone. BACKGROUND

[0002] Liquid silicone is also known as liquid silicone, which is relative to solid high-temperature vulcanized silicone rubber. It is a liquid glue with good flowability, fast vulcanization, more safety and environmental protection, and can fully meet the requirements of food grade. Liquid silicone has excellent tear resistance, resilience, anti-yellowing, thermal stability and heat resistance and aging resistance. It is mainly used for infant products, medical supplies and electronic products (keys).

[0003] The existing liquid silicone mold injection molding mold can be referred to the Chinese utility model patent with the announcement number CN213797832U, which discloses a liquid silicone mold injection molding mold, which comprises a mold body, a driving motor, a top plate, a mounting groove, an injection mechanism, a guide rod, a shaping cavity, a lifting mechanism, a base and a damping spring. The top end of the mold body is provided with a top plate, the driving motor is electrically connected with the injection mechanism, the injection mechanism is arranged on the upper part of the mold body through the mounting groove, the guide rod is arranged at the bottom end of the injection mechanism, the shaping cavity is arranged at the lower part of the mold body, the lifting mechanism is arranged on both sides of the mold body, the base is arranged at the bottom of the mold body, and the damping spring is arranged in the base. The bottom of the utility model is provided with a damping structure base, which can effectively reduce the vibration noise generated by the operation of the mold, improve the injection efficiency and improve the quality of liquid silicone mold injection molding.

[0004] The existing liquid silicone forming mold generally coagulates liquid silicone by natural cooling. This method is low in efficiency, and air bubbles may be generated when liquid silicone enters the mold, affecting the quality of finished products. UTILITY MODEL CONTENTS

[0005] (I) Technical problem solved

[0006] In view of the deficiencies of the prior art, the utility model provides a liquid silicone forming mold, which has the advantages of rapid coagulation and avoids air bubbles in liquid silicone, and solves the above technical problems.

[0007] (II) Technical scheme

[0008] To achieve the above object, the utility model provides the following technical scheme: A kind of forming mould of liquid silicone, it include: bottom plate, the bottom plate top is fixedly installed with lifting piston, the top of the lifting piston is fixedly installed with movable mould, the top of the movable mould is fixedly installed with limiting post, the bottom plate top is fixedly installed with support column, the top of the support column is fixedly installed with fixed mould, the top of the fixed mould is fixedly installed with top plate, the top plate top is inserted and is installed with glue injection port, the center of the top plate is inserted and is installed with water inlet pipe, the left side of the top plate is inserted and is installed with exhaust pipe, the bottom plate top is fixedly installed with support frame, the top of the support frame is fixedly installed with air pump and gear pump, the front side of the top plate is inserted and is installed with water outlet pipe, the outside of the water outlet pipe is inserted and is installed with limiting frame;The bottom plate can limit the position of the bottom end of lifting piston.

[0009] As the preferred technical scheme of the utility model, the lifting piston is symmetrically installed at the bottom of the movable mould with the center of the movable mould as the reference, and the movable mould is movably connected between the lifting piston and the bottom plate.

[0010] As the preferred technical scheme of the utility model, the limiting post is symmetrically installed at the four corners of the top end of the movable mould with the center of the movable mould as the reference, and the fixed mould is fixedly connected between the support column and the bottom plate.

[0011] As the preferred technical scheme of the utility model, the fixed mould and the four corners of the top plate are provided with opening structures matched with the size of the limiting post, and the fixed mould, the top plate and the limiting post are slidably connected.

[0012] As the preferred technical scheme of the utility model, the glue injection port vertically penetrates the top plate, the fixed mould and the mould cavity, and the bottom end of the water inlet pipe is lower than the bottom end of the water outlet pipe.

[0013] As the preferred technical scheme of the utility model, the exhaust pipe vertically penetrates the top plate, the fixed mould and the mould cavity, and the rear end of the water inlet pipe is fixedly connected with the water outlet of the gear pump.

[0014] As the preferred technical scheme of the utility model, the rear end of the exhaust pipe is fixedly connected with the air inlet end of the air pump, and the water outlet pipe is fixedly connected with the support frame through the limiting frame.

[0015] Compared with the prior art, the utility model provides a forming mould of liquid silicone, which has the following beneficial effects:

[0016] 1. The utility model discloses a bowl-shaped fixed mold, the top end of the fixed mold is closed by a top plate, the rear end of a water inlet pipe inserted and installed in the center of the top plate is connected with a gear pump, the gear pump can deliver cooling water to the inner cavity of the fixed mold through the water inlet pipe when starting, a water outlet pipe is inserted and installed on the front side of the top plate, the bottom end is flush with the bottom surface of the top plate, and the bottom end of the water outlet pipe is higher than the bottom end of the water inlet pipe, which can make the cooling water in the inner cavity of the fixed mold enter the inner cavity of the fixed mold, and then be discharged through the water outlet pipe, forming a cooling water circulation, and the cooling water in the fixed mold can absorb the heat of the silica gel, so that the silica gel can be quickly cooled, the silica gel solidification time is shortened, and the production efficiency is improved.

[0017] 2. The utility model discloses a gas pump, the air inlet end of the gas pump is communicated with an exhaust pipe, the front end of the exhaust pipe is vertically penetrated through the top plate, the fixed mold and the mold cavity, after completing glue injection, the glue injection port is blocked, and then the gas pump is started, the gas pump can extract the air in the mold cavity through the exhaust pipe when starting, so that the inside of the mold cavity is in a low pressure state, the bubbles in the silica gel will move to the silica gel liquid surface due to the pressure difference, and finally break and discharge, which can avoid the situation that the product inside appears concave due to the bubbles adhering to the bottom surface of the fixed mold when the silica gel solidifies, thereby improving the product quality. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the whole structure schematic diagram of the utility model;

[0019] Figure 2 It is the movable mold installation structure schematic diagram of the utility model;

[0020] Figure 3 It is the fixed mold installation structure schematic diagram of the utility model;

[0021] Figure 4 It is the water outlet pipe installation structure schematic diagram of the utility model;

[0022] Wherein: 1, bottom plate; 11, lifting piston; 12, movable mold; 13, limiting column; 14, support column; 15, fixed mold; 16, top plate; 17, glue injection port; 18, water inlet pipe; 19, exhaust pipe; 110, support frame; 111, gas pump; 112, gear pump; 113, water outlet pipe; 114, limiting frame. DETAILED DESCRIPTION

[0023] The embodiments of the utility model will be further described in detail below in combination with the drawings and examples. The following examples are used to illustrate the utility model, but cannot be used to limit the scope of the utility model.

[0024] In the description of the utility model, unless otherwise specified, the meaning of "multiple" is two or more than two;The terms "up", "down", "left", "right", "inside", "outside", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0025] In the description of the utility model, it should be pointed out that, unless otherwise specified and limited, the terms "connected", "connected" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected;It can be mechanically connected, or it can be electrically connected;It can be directly connected, or it can be indirectly connected through an intermediate medium. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0026] Please refer to Figure 1 Figure 4 In the embodiment, a forming mold of liquid silicone rubber comprises a bottom plate 1, a lifting piston 11 is fixedly installed above the bottom plate 1, a movable mold 12 is fixedly installed at the top end of the lifting piston 11, a limiting column 13 is fixedly installed above the movable mold 12, a supporting column 14 is fixedly installed above the bottom plate 1, a fixed mold 15 is fixedly installed above the supporting column 14, a top plate 16 is fixedly installed above the fixed mold 15, a glue injection port 17 is inserted and installed above the top plate 16, a water inlet pipe 18 is inserted and installed at the center of the top plate 16, an exhaust pipe 19 is inserted and installed at the left side of the top plate 16, a supporting frame 110 is fixedly installed above the bottom plate 1, a gas pump 111 and a gear pump 112 are fixedly installed above the supporting frame 110, a water outlet pipe 113 is inserted and installed at the front side of the top plate 16, and a limiting frame 114 is inserted and installed outside the water outlet pipe 113.

[0027] ​The lifting piston 11 is symmetrically installed on the bottom of the movable mold 12 in front and back, left and right with the center of the movable mold 12 as the reference, the movable mold 12 is movably connected between the lifting piston 11 and the bottom plate 1, the limiting column 13 is symmetrically installed on the four corners of the top end of the movable mold 12 with the center of the movable mold 12 as the reference, the fixed mold 15 is fixedly connected between the supporting column 14 and the bottom plate 1, the fixed mold 15 and the four corners of the top plate 16 are provided with an opening structure matched with the size of the limiting column 13, the fixed mold 15, the top plate 16 and the limiting column 13 are slidably connected, the glue injection port 17 vertically penetrates the top plate 16, the fixed mold 15 and the mold cavity, the bottom end of the water inlet pipe 18 is lower than the bottom end of the water outlet pipe 113, the exhaust pipe 19 vertically penetrates the top plate 16, the fixed mold 15 and the mold cavity, the rear end of the water inlet pipe 18 is fixedly connected with the water outlet of the gear pump 112, the rear end of the exhaust pipe 19 is fixedly connected with the air inlet end of the air pump 111, and the water outlet pipe 113 is fixedly connected with the supporting frame 110 through the limiting frame 114.

[0028] Specifically, the bottom plate 1 can limit the position of the bottom end of the lifting piston 11, the lifting piston 11 can adjust the position of the movable mold 12, the movable mold 12 can be combined with the bottom surface of the fixed mold 15 to form a mold cavity, the limiting column 13 can limit the relative position between the movable mold 12 and the fixed mold 15, the supporting column 14 can limit the position of the fixed mold 15, the inner cavity of the fixed mold 15 can facilitate the circulation of cooling water, the top plate 16 can close the top end of the fixed mold 15, the glue injection port 17 can facilitate the silicone entering the inside of the mold cavity, the water inlet pipe 18 can facilitate the cooling water entering the inside of the fixed mold 15 at the bottom end of the inner cavity of the fixed mold 15, the exhaust pipe 19 can facilitate the air pump 111 to exhaust the air inside the mold cavity, the supporting frame 110 can raise the position of the air pump 111 and the gear pump 112, the gear pump 112 can facilitate the delivery of cooling water to the inside of the water inlet pipe 18, the water outlet pipe 113 can facilitate the discharge of cooling water, and the limiting frame 114 can limit the position of the water outlet pipe 113.

[0029] In use, the fixed mold 15 is in the shape of a bowl, the top end of the fixed mold 15 is closed by the top plate 16, the rear end of the water inlet pipe 18 inserted in the center of the top plate 16 is connected with the gear pump 112, the gear pump 112 can deliver cooling water to the inner cavity of the fixed mold 15 through the water inlet pipe 18 when started, the water outlet pipe 113 is inserted in the front side of the top plate 16, the bottom end is flush with the bottom surface of the top plate 16, the bottom end of the water outlet pipe 113 is higher than the bottom end of the water inlet pipe 18, in this way, the cooling water at the bottom of the inner cavity of the fixed mold 15 can enter the inner cavity of the fixed mold 15 and then be discharged through the water outlet pipe 113, forming a cooling water circulation, the cooling water inside the fixed mold 15 can absorb the heat of the silica gel through the fixed mold 15, so that the silica gel can be rapidly cooled, so as to shorten the silica gel solidification time and improve the production efficiency, the air inlet end of the air pump 111 is communicated with the exhaust pipe 19, the front end of the exhaust pipe 19 vertically penetrates the top plate 16 and is communicated with the mold cavity, after the glue injection hole 17 is blocked after the glue injection is completed, the air pump 111 is started, the air pump 111 can exhaust the air inside the mold cavity through the exhaust pipe 19 when started, so that the inside of the mold cavity is in a low pressure state, the bubbles inside the silica gel will move to the surface of the silica gel due to the air pressure difference and finally be broken and discharged, in this way, the situation that the product inside appears concave due to the bubbles adhering to the bottom surface of the fixed mold 15 when the silica gel is solidified can be avoided, so as to improve the product quality.

[0030] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A molding die for liquid silicone, characterized in that, include: A base plate (1) is provided, on which a lifting piston (11) is fixedly installed. A moving mold (12) is fixedly installed at the top of the lifting piston (11). A limit post (13) is fixedly installed above the moving mold (12). A support post (14) is fixedly installed above the base plate (1). A fixed mold (15) is fixedly installed above the support post (14). A top plate (16) is fixedly installed above the fixed mold (15). An injection molding machine is inserted through the top plate (16). The top plate (16) has a water inlet pipe (18) inserted through the center of the top plate (16), an exhaust pipe (19) inserted through the left side of the top plate (16), a support frame (110) fixedly installed above the bottom plate (1), an air pump (111) and a gear pump (112) fixedly installed above the support frame (110), a water outlet pipe (113) inserted through the front side of the top plate (16), and a limit frame (114) inserted through the outside of the water outlet pipe (113).

2. The molding die for liquid silicone according to claim 1, characterized in that: The lifting piston (11) is symmetrically installed at the bottom of the moving mold (12) with the center of the moving mold (12) as the reference. The moving mold (12) is connected to the base plate (1) through the lifting piston (11).

3. The molding die for liquid silicone according to claim 1, characterized in that: The limiting posts (13) are symmetrically installed at the four corners of the top of the moving mold (12) with the center of the moving mold (12) as the reference. The fixed mold (15) is fixedly connected to the base plate (1) through the support posts (14).

4. The molding die for liquid silicone according to claim 1, characterized in that: The fixed mold (15) and the top plate (16) are provided with openings at the four corners that match the size of the limiting post (13), and the fixed mold (15), the top plate (16) and the limiting post (13) are connected in a sliding manner.

5. The molding die for liquid silicone according to claim 1, characterized in that: The injection port (17) vertically penetrates the top plate (16), the fixed mold (15) and communicates with the mold cavity, and the bottom end of the water inlet pipe (18) is lower than the bottom end of the water outlet pipe (113).

6. The molding die for liquid silicone according to claim 1, characterized in that: The exhaust pipe (19) vertically penetrates the top plate (16), the fixed mold (15) and communicates with the mold cavity, and the rear end of the water inlet pipe (18) is fixedly connected to the outlet of the gear pump (112).

7. The molding die for liquid silicone according to claim 1, characterized in that: The rear end of the exhaust pipe (19) is fixedly connected to the air inlet of the air pump (111), and the water outlet pipe (113) is fixedly connected to the support frame (110) through the limiting frame (114).

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