Injection mold for silica gel sealing gasket

Abstract

The utility model relates to an injection mold of a silica gel sealing gasket in the field of injection molds, a fixed mold assembly comprises a fixed mold base, a fixed mold plate, a fixed mold core and square iron, an air blowing hole is formed in the fixed mold core, a through hole is formed in the fixed mold base, the axis of the through hole and the axis of the air blowing hole coincide, ports of the through hole and the air blowing hole are attached, and a movable air column and a driving air cylinder are arranged between the fixed mold plate and the fixed mold base. The movable air column is connected with a telescopic rod of the driving air cylinder, one end of the movable air column penetrates through the through hole and extends into the air blowing hole, the end, away from the fixed mold base, of the air blowing hole is provided with an air outlet and a sealing table, an air channel is formed in the movable air column, one end of the air channel extends to the surface of the air outlet table, and the other end of the air channel extends to the side wall of the movable air column. The gas in the gas channel can flow out from the gas outlet, and the gas is blown between the fixed mold core and the formed sealing gasket, so that the sealing gasket is separated from the fixed mold core, the sealing gasket does not need to be manually dug out, and the sealing gasket is prevented from being damaged.

Description

Technical Field

[0001] The utility model relates to the field of injection molds, in particular to an injection mold for a silicone sealing gasket. Background Art

[0002] Injection molds are essential tools for producing plastic products. They heat and inject plastic material into the mold cavity, where it cools and solidifies to form the desired product shape. Injection molds are widely used in various industries, including packaging, daily necessities, automotive parts, electronics, and industrial products. Silicone gaskets, a sealing material primarily made from silicone, have gained widespread application across a wide range of fields due to their numerous excellent properties. They are widely used in various automotive applications, including engines, transmissions, braking systems, and cooling systems. They effectively prevent liquid and gas leakage and enhance the seal between automotive parts. They are also widely used in the electronics field, particularly in semiconductor and LED manufacturing. They can withstand high temperatures and humidity, and are resistant to corrosion from chemicals such as acids, alkalis, and oils, providing reliable protection for the stable operation of electronic equipment.

[0003] The molding methods of silicone sealing gaskets mainly include extrusion molding, glue dripping process, solid-state hot pressing, liquid injection and other processes. Among them, the most commonly used is injection molding. The manufacturing accuracy and assembly accuracy of the mold are high to ensure that the silicone sealing gaskets produced are accurate in size and complex in shape. Since the silicone material needs to be cured and formed at high temperature, the mold needs to be able to withstand high temperature environment without deformation or damage.

[0004] After the existing silicone gasket injection mold is formed, it is usually necessary to manually pick the gasket out of the mold core. The gasket is easily damaged during the removal process, resulting in damage to the gasket, which reduces the sealing performance of the damaged gasket. Utility Model Content

[0005] In order to overcome the deficiencies of the existing technical solutions, the utility model provides an injection mold for a silicone sealing gasket, which can effectively solve the technical problems.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] A silicone sealing gasket injection mold includes a fixed mold assembly and a movable mold assembly. Both the fixed mold assembly and the movable mold assembly can be installed on an injection molding machine and molded by the injection molding machine. The fixed mold assembly includes a fixed mold base, a fixed mold plate, a fixed mold core and a square iron. A mounting groove is provided in the middle of the fixed mold base. The fixed mold core is fixedly arranged in the mounting groove. The square iron is arranged at one end of the fixed mold base away from the fixed mold core. The fixed mold plate is arranged at one end of the square iron away from the fixed mold base. The fixed mold plate can be installed on the injection molding machine. A blowing hole is provided on the fixed mold core. A through hole is provided on the fixed mold base. The axes of the through hole and the blowing hole coincide and the ends are in contact. A movable air column and a driving cylinder are arranged between the fixed mold plate and the fixed mold base. The movable air column is connected to the telescopic rod of the driving cylinder. One end of the movable air column passes through the through hole and extends into the blowing hole. An air outlet and a sealing platform are provided at the end of the blowing hole away from the fixed mold base. The air outlet is flush with the surface of the fixed mold core. A plug and an air outlet platform are provided at the end of the movable air column close to the blowing hole. The plug can be inserted into the air outlet and is flush with the surface of the fixed mold core. The air outlet platform can be fitted with the sealing platform. An air duct is provided in the movable air column. One end of the air duct extends to the surface of the air outlet platform, and the other end extends to the side wall of the movable air column.

[0008] Furthermore, a trachea interface is provided on the side wall of the movable air column, the trachea interface is communicated with the airway, and the trachea interface can be connected to an air pump.

[0009] Furthermore, an electric control valve is provided on the fixed template, and the air pipe interface and the driving cylinder are both connected to the electric control valve. The electric control valve connection can independently control the conduction of the air pipe interface and the driving cylinder.

[0010] Furthermore, the movable mold assembly includes a movable mold plate, a movable mold plate, a movable mold core and a hot nozzle. The movable mold core is arranged on the movable mold base, the movable mold plate is arranged at one end of the movable mold base away from the movable mold core, and the hot nozzle passes through the movable mold plate, the movable mold base and the movable mold core in sequence.

[0011] Furthermore, a positioning column is provided at one end of the movable mold base close to the fixed mold base, and a positioning groove is provided at one end of the fixed mold base close to the movable mold base. After the movable mold base and the fixed mold base are closed, the positioning column is inserted into the positioning groove.

[0012] Furthermore, the side wall of the fixed mold base is provided with a rotatable anti-slip hook, and the side wall of the movable mold base is provided with a positioning column. After the movable mold base and the fixed mold base are closed, the anti-slip hook can engage with the positioning column.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: a movable air column is provided, an air duct is provided in the movable air column and can be connected to an air pump, one end of the movable air column passes through the fixed mold seat and extends to the surface of the fixed mold core, the driving cylinder can drive the movable air column to rise and fall in the through hole and the blowing hole, and during the injection molding process, the movable air column rises to the highest point, the surface of the plug is flush with the surface of the fixed mold core, the air outlet platform and the sealing platform fit together, so that one end of the air duct is closed, and after the mold is opened, the driving cylinder drives the movable air column to descend, the plug is pulled out of the air outlet, the air outlet platform and the sealing platform are separated, and the gas in the air duct can flow out from the air outlet, and the gas is blown between the fixed mold core and the formed sealing gasket, so that the sealing gasket is detached from the fixed mold core, and there is no need to manually pick out the sealing gasket, thereby avoiding damage to the sealing gasket. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the mold opening state of the utility model;

[0015] Figure 2 for Figure 1 A partial enlarged view of point A in the middle;

[0016] Figure 3 This is a schematic diagram of the mold closing state of the present utility model;

[0017] Numbers in the figure: 1-fixed mold base, 2-fixed mold plate, 3-fixed mold core, 4-square iron, 5-movable mold plate, 6-movable mold base, 7-movable mold core, 8-hot nozzle, 9-anti-drop hook, 10-positioning column, 11-blowing hole, 12-through hole, 13-active air column, 14-driving cylinder, 15-air outlet, 16-sealing platform, 17-plug, 18-air outlet platform, 19-trachea interface, 20-air duct. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] The following combination Figure 1-Figure 3 The following is a detailed description of the injection mold of a silicone sealing gasket of the utility model:

[0020] A silicone sealing gasket injection mold, including a fixed mold assembly and a movable mold assembly, both of which can be installed on an injection molding machine and closed by the injection molding machine, the fixed mold assembly includes a fixed mold base 1, a fixed mold plate 2, a fixed mold core 3 and a square iron 4, the middle of the fixed mold base 1 is provided with a mounting groove, the fixed mold core 3 is fixedly arranged in the mounting groove, the square iron 4 is arranged at one end of the fixed mold base 1 away from the fixed mold core 3, the fixed mold plate 2 is arranged at one end of the square iron 4 away from the fixed mold base 1, the fixed mold plate 2 can be installed on the injection molding machine, the movable mold assembly includes a movable mold plate 5, a movable mold core 7 and a hot nozzle 8 The movable mold core 7 is arranged on the movable mold base 6, and the movable mold plate 5 is arranged at the end of the movable mold base 6 away from the movable mold core 7. The hot nozzle 8 passes through the movable mold plate 5, the movable mold base 6 and the movable mold core 7 in sequence. The movable mold base 6 is provided with a positioning column 10 at one end close to the fixed mold base 1, and the fixed mold base 1 is provided with a positioning groove at one end close to the movable mold base 6. After the movable mold base 6 and the fixed mold base 1 are clamped, the positioning column 10 is inserted into the positioning groove. The side wall of the fixed mold base 1 is provided with a rotatable anti-detachment hook 9, and the side wall of the movable mold base 6 is provided with a positioning column 10. After the movable mold base 6 and the fixed mold base 1 are clamped, the anti-detachment hook 9 can be engaged with the positioning column 10.

[0021] The fixed mold core 3 is provided with a blowing hole 11, and the fixed mold base 1 is provided with a through hole 12. The axes of the through hole 12 and the blowing hole 11 coincide and the ports are fitted together. A movable air column 13 and a driving cylinder 14 are provided between the fixed mold plate 2 and the fixed mold base 1. The movable air column 13 is connected to the telescopic rod of the driving cylinder 14. One end of the movable air column 13 passes through the through hole 12 and extends into the blowing hole 11. An air outlet 15 and a sealing platform 16 are provided at the end of the blowing hole 11 away from the fixed mold base 1. The air outlet 15 is flush with the surface of the fixed mold core 3. A plug 17 and an air outlet platform 18 are provided at the end of the movable air column 13 close to the blowing hole 11. The plug 17 can be inserted into the air outlet 15 and is flush with the surface of the fixed mold core 3. The air outlet platform 18 can be fitted with the sealing platform 16. An air duct 20 is provided in the movable air column 13. One end of the air duct 20 extends to the surface of the air outlet platform 18, and the other end extends to the side wall of the movable air column 13. The side wall of the movable air column 13 is provided with an air pipe interface 19, which is connected to the air duct 20. The air pipe interface 19 can be connected to the air pump. An electric control valve is provided on the fixed mold plate 2. The air pipe interface 19 and the driving cylinder 14 are both connected to the electric control valve. The electric control valve connection can individually control the conduction of the air pipe interface 19 and the driving cylinder 14.

[0022] The injection mold of a silicone sealing gasket in this embodiment is provided with a movable air column 13, an air channel 20 is provided in the movable air column 13 and can be connected to an air pump, one end of the movable air column 13 passes through the fixed mold base 1 and extends to the surface of the fixed mold core 3, the driving cylinder 14 can drive the movable air column 13 to rise and fall in the through hole 12 and the blowing hole 11, and during the injection process, the movable air column 13 rises to the highest point, the surface of the plug 17 is flush with the surface of the fixed mold core 3, the air outlet platform 18 is in contact with the sealing platform 16, so that one end of the air channel 20 is closed, and after the mold is opened, the driving cylinder 14 drives the movable air column 13 to descend, the plug 17 is pulled out from the air outlet 15, and the air outlet platform 18 is separated from the sealing platform 16, and the gas in the air channel 20 can flow out from the air outlet 15, and the gas is blown between the fixed mold core 3 and the formed sealing gasket, so that the sealing gasket is detached from the fixed mold core 3, and there is no need to manually pick out the sealing gasket, thereby avoiding damage to the sealing gasket.

[0023] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. An injection mold for a silicone sealing gasket, comprising a fixed mold assembly and a movable mold assembly, both of which can be installed on an injection molding machine and closed by the injection molding machine. The fixed mold assembly comprises a fixed mold base, a fixed mold plate, a fixed mold core, and a square iron. A mounting groove is provided in the middle of the fixed mold base, the fixed mold core is fixedly disposed in the mounting groove, the square iron is disposed at one end of the fixed mold base away from the fixed mold core, and the fixed mold plate is disposed at one end of the square iron away from the fixed mold base. The fixed mold plate can be installed on the injection molding machine, and is characterized in that: The fixed mold core is provided with a blowing hole, and the fixed mold base is provided with a through hole. The axes of the through hole and the blowing hole coincide and the ports fit together. A movable air column and a driving cylinder are provided between the fixed mold plate and the fixed mold base. The movable air column is connected to the telescopic rod of the driving cylinder. One end of the movable air column passes through the through hole and extends into the blowing hole. An air outlet and a sealing platform are provided at the end of the blowing hole away from the fixed mold base. The air outlet is flush with the surface of the fixed mold core. A plug and an air outlet platform are provided at the end of the movable air column close to the blowing hole. The plug can be inserted into the air outlet and is flush with the surface of the fixed mold core. The air outlet platform can fit with the sealing platform. An air duct is provided in the movable air column. One end of the air duct extends to the surface of the air outlet platform, and the other end extends to the side wall of the movable air column.

2. The injection mold for a silicone sealing gasket according to claim 1, characterized in that: The side wall of the movable air column is provided with an air pipe interface, which is communicated with the airway and can be connected to an air pump.

3. The injection mold for a silicone sealing gasket according to claim 2, characterized in that: The fixed template is provided with an electric control valve, and the air pipe interface and the driving cylinder are both connected to the electric control valve. The electric control valve connection can independently control the conduction of the air pipe interface and the driving cylinder.

4. The injection mold for a silicone sealing gasket according to any one of claims 1 to 3, characterized in that: The movable mold assembly includes a movable mold plate, a movable mold plate, a movable mold core and a hot nozzle. The movable mold core is arranged on the movable mold base. The movable mold plate is arranged at one end of the movable mold base away from the movable mold core. The hot nozzle passes through the movable mold plate, the movable mold base and the movable mold core in sequence.

5. The injection mold for a silicone sealing gasket according to claim 4, characterized in that: The movable mold base is provided with a positioning column at one end close to the fixed mold base, and a positioning groove is provided at one end of the fixed mold base close to the movable mold base. After the movable mold base and the fixed mold base are closed, the positioning column is inserted into the positioning groove.

6. The injection mold for a silicone sealing gasket according to claim 4, characterized in that: The side wall of the fixed mold base is provided with a rotatable anti-slip hook, and the side wall of the movable mold base is provided with a positioning column. After the movable mold base and the fixed mold base are closed, the anti-slip hook can be engaged with the positioning column.

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