Household appliance switch injection mold convenient to demold

Abstract

The utility model provides a household appliance switch injection mold convenient to demold, which relates to the technical field of injection molds and comprises a base, a first hydraulic cylinder and a second hydraulic cylinder are fixedly mounted on the surface of the base, a first module is fixedly mounted at the output end of the first hydraulic cylinder, and a sliding table is fixedly mounted at the output end of the second hydraulic cylinder. By arranging the base, the first hydraulic cylinder, the second hydraulic cylinder, the first mold, the sliding table, the second mold block, a sliding rod, a forming groove, a spring, a clamping block, a sliding groove and an ejector pin structure, during demolding, the second hydraulic cylinder is started to drive the sliding table to move, so that a fixing column can be driven to push an ejector pin, and the spring is fixedly installed in the fixing column; when the fixing column is in contact with the ejector pin, the ejector pin can extrude the clamping block and the spring, so that the ejector pin can use corresponding thrust at parts with different hardness of a product, damage to a formed part caused by the ejector pin is effectively reduced, and the yield of the mold is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to an injection mold for a switch for household appliances which is convenient for demoulding. Background Art

[0002] Moulds are various molds and tools used in industrial production to obtain the desired products by injection molding, blow molding, extrusion, die casting or forging, smelting, stamping and other methods. In short, moulds are tools used to make shaped objects. Such tools are composed of various parts, and different moulds are composed of different parts. They mainly realize the processing of the shape of the object by changing the physical state of the shaped material. They are known as the "mother of industry". Announcement No. CN219988310U discloses a plastic mould with a quick demoulding structure, including a base, a receiving seat is fixedly mounted on the upper surface of the base, a cooling cavity is opened inside the receiving seat, a concave mould is arranged on the top of the receiving seat, and the bottom of the concave mould extends to the cooling cavity. The cooling element is provided in the cooling chamber and is connected to the inner bottom wall of the cooling chamber. A liquid storage tank is fixedly installed on one side of the base. A cooling assembly is arranged inside the liquid storage tank. The cooling assembly includes a water suction pump fixedly installed on the inner wall of the liquid storage tank. A water pipe is fixedly installed on the water outlet end of the water suction pump. The water pipe at the water outlet end of the water suction pump extends to the interior of the cooling chamber. Heat conducting plates are fixedly installed on the inner walls on both sides of the cooling chamber. One end of the two heat conducting plates are in contact with the surface of the die. In actual application of the above technology, ejector pins are used to demold the product. The thrust of each ejector pin is equal. However, the hardness of different parts of the product is different. Using the same thrust and without a buffer zone may cause product damage during demolding, which needs to be improved. Utility Model Content

[0003] The purpose of the utility model is to solve the technical problems raised in the above background technology.

[0004] The utility model adopts the following technical scheme: a household appliance switch plastic mold with convenient demoulding, comprising a base, a first hydraulic cylinder and a second hydraulic cylinder are fixedly installed on the surface of the base, a first module is fixedly installed on the output end of the first hydraulic cylinder, a sliding table is fixedly installed on the output end of the second hydraulic cylinder, a second module is fixedly installed on the surface of the base, a sliding rod is slidably connected to the surface of the second module, a molding groove is provided on the surface of the second module, a fixed column is fixedly installed on the surface of the sliding table, a spring is fixedly installed inside the fixed column, a card block is fixedly installed on the surface of the spring, and an ejector pin is slidably connected inside the second module.

[0005] Preferably, a slide groove is provided inside the second module, and a limit block is fixedly installed on the surface of the ejector pin, and the limit block slides inside the slide groove. Here, the limit block slides inside the slide groove to limit the ejector pin and prevent it from falling off. When demolding is required, the ejector pin is only needed to be used to eject the molded switch product.

[0006] Preferably, the number of the fixed columns is four groups, and the four groups of fixed columns are symmetrically distributed on the surface of the sliding table. Here, the four groups of fixed columns can effectively lift all the ejectors. When demoulding, the sliding table is driven to move by starting the second hydraulic cylinder, so that the fixed columns can be driven to push the ejectors. A spring is fixedly installed inside the fixed column. When the fixed column contacts the ejector, the ejector will squeeze the block and the spring, which can effectively reduce the damage caused by the ejector to the molded part when the ejector is ejected, thereby increasing the yield rate of the mold.

[0007] Preferably, the card block is located directly behind the ejector pin. Here, after the product is formed, the card block needs to drive the ejector pin to move forward, and the card block located directly behind the ejector pin can accurately push the ejector pin to avoid damaging the formed product.

[0008] Preferably, the diameter of the fixed column is equal to the diameter of the chute. Here, when the diameter of the fixed column is equal to the diameter of the chute, the fixed column can move inside the chute, so that the fixed column can completely push out the ejector pin, thereby improving the demoulding efficiency of the mold.

[0009] Preferably, a water pipe is fixedly installed on the surface of the second module, a water tank is provided inside the base, and a water pump is fixedly installed inside the water tank. Here, the water pipe passes through the inside of the second module, and the water pump can pump water from the water tank to the second module, so that the injection molding material inside the second module can be quickly cooled by water cooling, thereby accelerating the rapid molding of the switch product and improving the injection molding efficiency.

[0010] Preferably, the number of the water pumps is two groups, and the two groups of water pumps are symmetrically distributed inside the water tank. Here, the two groups of water pumps are responsible for drainage and pumping respectively, which effectively avoids the water flow staying in the water pipe for a long time and affecting the cooling effect.

[0011] Compared with the prior art, the advantages and positive effects of the utility model are:

[0012] 1. In the utility model, a base, a first hydraulic cylinder, a second hydraulic cylinder, a first mold, a sliding table, a second module, a sliding rod, a molding groove, a spring, a block, a sliding groove, and an ejector pin structure are provided. When demolding, the sliding table is driven to move by starting the second hydraulic cylinder, so that the fixed column can be driven to push the ejector pin. A spring is fixedly installed inside the fixed column. When the fixed column contacts the ejector pin, the ejector pin will squeeze the block and the spring. In this way, the ejector pin can be placed at different parts of the product with different hardness. While using corresponding thrust, it can also effectively reduce the damage caused by the ejector pin to the molded part, thereby increasing the yield of the mold. By providing a sliding groove and a limit block structure, the limit block slides inside the sliding groove to limit the ejector pin and prevent the ejector pin from falling off. When demolding is required, the ejector pin only needs to be used to eject the molded switch product.

[0013] 2. In the utility model, a water pipe, a water pump and a water tank structure are provided. The water pipe passes through the interior of the second module, and the water pump can pump water out of the water tank to the second module. In this way, the injection molding material inside the second module can be quickly cooled by water cooling, thereby accelerating the rapid molding of the switch product and improving the injection molding efficiency. The two groups of water pumps are responsible for drainage and pumping, respectively, which effectively avoids the water flow staying in the water pipe for a long time and affecting the cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model provides a schematic diagram of a home appliance switch plastic mold that is easy to demould;

[0015] Figure 2 The utility model provides a cross-sectional view of a plastic mold for a home appliance switch that is easy to demould;

[0016] Figure 3 The utility model proposes a home appliance switch plastic mold which is convenient for demoulding Figure 2 Enlarged view of point A in the middle;

[0017] Figure 4 The utility model provides an internal schematic diagram of a home appliance switch plastic mold that is easy to demould;

[0018] Figure 5 The utility model provides a schematic diagram of a water tank of a home appliance switch plastic mold which is convenient for demoulding.

[0019] Legend:

[0020] 1. Base; 2. First hydraulic cylinder; 3. Second hydraulic cylinder; 4. First module; 5. Sliding table; 6. Second module; 7. Sliding rod; 8. Forming groove; 9. Fixed column; 10. Spring; 11. Block; 12. Slide groove; 13. Ejector pin; 14. Limit block; 15. Water pipe; 16. Water pump; 17. Water tank. DETAILED DESCRIPTION

[0021] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0022] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0023] Embodiment 1

[0024] See also Figure 1-4 The utility model provides a technical solution: a household appliance switch plastic mold for convenient demoulding, comprising a base 1, a first hydraulic cylinder 2 and a second hydraulic cylinder 3 are fixedly installed on the surface of the base 1, a first module 4 is fixedly installed on the output end of the first hydraulic cylinder 2, a sliding table 5 is fixedly installed on the output end of the second hydraulic cylinder 3, a second module 6 is fixedly installed on the surface of the base 1, a sliding rod 7 is slidably connected to the surface of the second module 6, a molding groove 8 is provided on the surface of the second module 6, a fixed column 9 is fixedly installed on the surface of the sliding table 5, a spring 10 is fixedly installed inside the fixed column 9, a block 11 is fixedly installed on the surface of the spring 10, an ejector pin 13 is slidably connected to the inside of the second module 6, a slide groove 12 is provided inside the second module 6, a limiting block 14 is fixedly installed on the surface of the ejector pin 13, the limiting block 14 slides inside the slide groove 12, and the limiting block 14 slides inside the slide groove 12, which can limit the ejector pin 13 to prevent the ejector pin 13 from falling off. When demoulding is required, the ejector pin 13 only needs to be used to eject the molded switch product. There are four groups of fixed columns 9, which are symmetrically distributed on the surface of the sliding table 5. The four groups of fixed columns 9 can effectively lift all the ejector pins 13. When demoulding, the sliding table 5 is driven to move by starting the second hydraulic cylinder 3, so that the fixed columns 9 can be driven to push the ejector pins 13. The fixed columns 9 are fixedly installed with springs 10 inside. When the fixed columns 9 contact the ejector pins 13, the ejector pins 13 will squeeze the block 11 and the spring 10, which can effectively reduce the damage caused by the ejector pins 13 to the molded parts when the molded parts are ejected. In order to increase the yield of the mold, the block 11 is located directly behind the ejector pin 13. After the product is formed, the block 11 needs to drive the ejector pin 13 to move forward. The block 11 is located directly behind the ejector pin 13 and can accurately push the ejector pin 13 to avoid damaging the formed product. The diameter of the fixed column 9 is equal to the diameter of the slide groove 12. When the diameter of the fixed column 9 is equal to the diameter of the slide groove 12, the fixed column 9 can move inside the slide groove 12, so that the fixed column 9 can completely push out the ejector pin 13, thereby improving the demolding efficiency of the mold.

[0025] Embodiment 2

[0026] See also Figure 5 A water pipe 15 is fixedly installed on the surface of the second module 6, a water tank 17 is opened inside the base 1, and a water pump 16 is fixedly installed inside the water tank 17. The water pipe 15 passes through the inside of the second module 6, and the water pump 16 can pump water from the water tank to the second module 6, so that the injection molding material inside the second module 6 can be quickly cooled by water cooling, thereby accelerating the rapid molding of the switch product and improving the injection molding efficiency. The number of water pumps 16 is two groups, and the two groups of water pumps 16 are symmetrically distributed inside the water tank 17. The two groups of water pumps 16 are responsible for drainage and pumping respectively, which effectively avoids the water flow staying in the water pipe 15 for a long time and affecting the cooling effect.

[0027] Working principle: When in use, first open the first hydraulic cylinder 2, fit the first module 4 and the second module 6, and then perform injection molding. After the injection molding is completed, turn on the water pump 16, and the water pump 16 can pump water from the water tank to the second module 6, so that the injection molding material inside the second module 6 can be quickly cooled by water cooling, thereby accelerating the rapid molding of the switch product and improving the injection molding efficiency. The two groups of water pumps 16 are responsible for drainage and pumping, respectively, which effectively avoids the water flow staying in the water pipe 15 for a long time, affecting the cooling effect. After the injection molding is completed, when demolding, through The second hydraulic cylinder 3 is started to drive the sliding table 5 to move, thereby driving the fixed column 9 to push the ejector 13. The limit block 14 slides inside the slide groove 12 to limit the ejector 13 to prevent the ejector 13 from falling off. A spring 10 is fixedly installed inside the fixed column 9. When the fixed column 9 pushes the ejector 13 to contact the product, the ejector 13 will squeeze the block 11 and the spring 10. In this way, the ejector 13 can be placed at locations with different hardness of the product. While using corresponding thrust, it can also effectively reduce the damage caused by the ejector 13 to the molded part, thereby increasing the yield of the mold.

[0028] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A household appliance switch molding mold with convenient demoulding, comprising a base (1), characterized in that: A first hydraulic cylinder (2) and a second hydraulic cylinder (3) are fixedly mounted on the surface of the base (1); a first module (4) is fixedly mounted on the output end of the first hydraulic cylinder (2); a sliding platform (5) is fixedly mounted on the output end of the second hydraulic cylinder (3); a second module (6) is fixedly mounted on the surface of the base (1); a sliding rod (7) is slidably connected to the surface of the second module (6); a molding groove (8) is provided on the surface of the second module (6); a fixed column (9) is fixedly mounted on the surface of the sliding platform (5); a spring (10) is fixedly mounted inside the fixed column (9); a block (11) is fixedly mounted on the surface of the spring (10); and a ejector pin (13) is slidably connected to the inside of the second module (6).

2. The easy-to-demold home appliance switch molding mold according to claim 1, characterized in that: A slide groove (12) is provided inside the second module (6), and a limit block (14) is fixedly installed on the surface of the ejector pin (13), and the limit block (14) slides inside the slide groove (12).

3. The easy-to-demold home appliance switch molding mold according to claim 1, characterized in that: The number of the fixed columns (9) is four groups, and the four groups of fixed columns (9) are symmetrically distributed on the surface of the sliding platform (5).

4. The easy-to-demold plastic mold for household appliance switches according to claim 1, characterized in that: The clamping block (11) is located directly behind the ejector pin (13).

5. The easy-to-demold home appliance switch molding mold according to claim 1, characterized in that: The diameter of the fixing column (9) is equal to the diameter of the sliding groove (12).

6. The easy-to-demold home appliance switch molding mold according to claim 1, characterized in that: A water pipe (15) is fixedly mounted on the surface of the second module (6), a water tank (17) is provided inside the base (1), and a water pump (16) is fixedly mounted inside the water tank (17).

7. The easy-to-demold home appliance switch molding mold according to claim 6, characterized in that: The number of the water pumps (16) is two groups, and the two groups of water pumps (16) are symmetrically distributed inside the water tank (17).

Images