Injection mold for thin-wall part of household appliance shell

Abstract

The utility model discloses a household appliance shell thin-wall part injection mold, and relates to the field of injection molds. The die comprises an upper die and a lower die, the upper die comprises a lower pressing seat and an upper die seat, the die is provided with a mounting hole site, a dislocation groove, a replacing mechanism and a fixing mechanism, a guide cylinder is quickly mounted in the mounting hole site of the upper die seat in an inserting manner, the mounting process is simple and efficient, and the mounting efficiency is high. The alignment design of the arc-shaped groove and the dislocation groove ensures accurate positioning of the guide cylinder in the installation process, the screwing fixing mode of the screw enables the guide cylinder to be disassembled conveniently and fast, the guide cylinder can be taken out easily only by simply loosening the screw, the dislocation ring is connected with the arc-shaped groove in an abutting mode, and the dislocation ring is pushed by the screw. And a stable staggered fixing structure is formed, so that the guide cylinder is effectively prevented from loosening or falling off in the use process, and the stability and the reliability of the mold are ensured.

Description

Technical Field

[0001] This utility model relates to the field of injection molds, specifically to an injection mold for thin-walled parts for household appliance housings. Background Technology

[0002] Injection molds for thin-walled appliance housings are precision molds specifically designed for producing thin-walled parts for appliance housings. These molds not only have precise dimensions and shapes, ensuring that the injection-molded thin-walled appliance housings are highly consistent with the product design requirements, but also possess excellent structural design and manufacturing processes to guarantee that the plastic parts have good surface quality, structural strength, and dimensional stability. Through precise mold design and processing, the wall thickness, shape, and dimensions of the plastic parts can be effectively controlled to meet the high requirements of appliance products for appearance and performance.

[0003] Since the guide hole and the mold are generally an integral structure, and the guide rod and the guide hole slide frequently, the guide hole will wear out over time. Replacing the mold is costly, but if the mold is not replaced, the wear of the guide hole will increase the clearance between it and the guide rod, which will lead to a decrease in the positioning accuracy of the mold during mold opening and closing. This decrease in positioning accuracy will directly affect the quality of the plastic part, such as causing dimensional deviations and positional offsets. At the same time, the wear of the guide hole may also cause the guide rod to wobble or get stuck during sliding, resulting in unstable mold operation. This not only affects the injection molding efficiency, but may also cause further damage to the mold itself. Utility Model Content

[0004] Based on this, the purpose of this utility model is to provide an injection mold for thin-walled parts of household appliance shells, so as to solve the technical problems of reduced mold positioning accuracy, unstable mold operation, and potential further damage to the mold itself caused by wear of guide holes.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an injection mold for thin-walled parts of household appliance shells, including an upper mold and a lower mold. The upper mold includes a lower pressure seat and an upper mold base. The bottom of the upper mold base is provided with four mounting holes on its four sides. An offset groove is provided above the interior of each mounting hole, and an offset ring is provided in the offset groove. A bolt hole is provided on one side of the offset groove, and the bolt hole extends through to one side of the upper mold base.

[0006] A replacement mechanism is installed in the mounting hole. The replacement mechanism includes a guide cylinder, which is inserted into the mounting hole. An arc-shaped groove is formed on the outer side of the guide cylinder. The arc-shaped groove is aligned with the misalignment groove, and the misalignment ring abuts against the arc-shaped groove.

[0007] By adopting the above technical solution, the upper mold base can be stably installed with the replacement mechanism, and precise positioning can be achieved through the misalignment groove and misalignment ring. The bolt holes provide a convenient fixing method, which enhances the overall stability and durability of the mold.

[0008] Furthermore, the replacement mechanism is provided in four sets, and the four sets of replacement mechanisms are respectively matched with four mounting holes.

[0009] By adopting the above technical solution, the mold can be evenly and stably supported in four directions, which improves the stability and precision of the mold during the injection molding process, and at the same time facilitates replacement and maintenance.

[0010] Furthermore, a fixing mechanism is screwed into the bolt hole, and the fixing mechanism includes a screw rod.

[0011] By adopting the above technical solution, the screw, as a fixing mechanism, can firmly fix the replacement mechanism in the mounting hole, preventing it from loosening or shifting during injection molding, thus ensuring the reliability and service life of the mold.

[0012] Furthermore, a hexagonal hole is provided on the outer side of the screw, and the screw abuts against the misalignment ring.

[0013] By adopting the above technical solution, the screw can be easily tightened or loosened with tools such as wrenches, which improves the assembly and disassembly efficiency of the mold and reduces the difficulty of operation.

[0014] Furthermore, a guide hole is provided at the bottom of the guide cylinder, and the guide hole is inserted and adapted to the guide rod.

[0015] By adopting the above technical solution, the upper and lower molds can maintain accurate positioning and alignment during mold closing and opening, thereby improving the dimensional accuracy and surface quality of the injection molded parts.

[0016] Furthermore, an upper mold base is detachably connected to the bottom of the lower pressure seat, and multiple mold grooves are provided at the center of the bottom of the upper mold base.

[0017] By adopting the above technical solution, the upper mold base can be easily replaced or repaired, and multiple mold slots improve the production efficiency and flexibility of the mold, enabling the simultaneous injection molding of multiple parts.

[0018] Furthermore, a cooling pipe is provided on one side of the upper mold base.

[0019] By adopting the above technical solution, the heat during the injection molding process can be dissipated quickly, which accelerates the curing and cooling speed of the plastic and improves the production efficiency and quality of injection molded parts.

[0020] Furthermore, the lower mold includes a base, the top of which is provided with a module seat, and the top center of the module seat is provided with multiple modules.

[0021] By adopting the above technical solutions, the lower mold can be easily combined or replaced according to production needs, which improves the versatility and flexibility of the mold and reduces production costs.

[0022] Furthermore, four guide rods are provided on the top outer side of the module base, and an air pipe connector is provided on one side of the module base.

[0023] By adopting the above technical solutions, the upper and lower molds become more stable during mold closing and opening; the air pipe connectors facilitate the connection and use of pneumatic components, improving the automation level of the mold.

[0024] Furthermore, the bottom of the guide hole is provided with an arc-shaped chamfer structure.

[0025] By adopting the above technical solution, the guide cylinder is inserted into the guide rod more smoothly, reducing friction and wear, and improving the assembly efficiency and service life of the mold. At the same time, the rounded chamfer can also disperse stress concentration and enhance the durability of the mold.

[0026] In summary, the present invention has the following main advantages:

[0027] 1. This utility model utilizes mounting holes, misalignment grooves, and replacement and fixing mechanisms. The guide cylinder is quickly installed into the mounting holes of the upper mold base via a plug-in connection, making the installation process simple and efficient. The alignment design of the arc-shaped groove and the misalignment groove ensures accurate positioning of the guide cylinder during installation. The screw-connected fixing method makes disassembly of the guide cylinder equally convenient; simply loosening the screw allows for easy removal. The abutment between the misalignment ring and the arc-shaped groove, combined with the pushing action of the screw on the misalignment ring, forms a stable misalignment fixing structure, effectively preventing the guide cylinder from loosening or falling off during use. This ensures the stability and reliability of the mold. In addition, as a vulnerable part, the guide cylinder can be easily replaced with a detachable replacement mechanism, which eliminates the need to replace the entire mold, thus greatly extending the service life of the mold. This staggered fixing structure also allows the guide cylinder to maintain a stable fixed state during long-term use, reducing the risk of mold damage. At the same time, the precise insertion and matching of the guide cylinder and the guide rod, as well as the solid fixation provided by the staggered fixing structure, ensure high-precision positioning of the mold during the mold opening and closing process, effectively reducing the dimensional deviation and positional offset of the plastic parts, and improving the quality of the plastic parts and production efficiency.

[0028] 2. This utility model incorporates an arc-shaped chamfer, which facilitates smooth insertion between the guide cylinder and the guide rod. During the mold opening and closing process, the guide cylinder frequently engages and disengages with the guide rod. The arc-shaped chamfer reduces frictional resistance during contact, making the insertion process smoother and reducing wear and noise caused by friction. Furthermore, the arc-shaped chamfer improves the alignment accuracy between the guide cylinder and the guide rod. During insertion, the arc-shaped chamfer guides the guide rod to accurately enter the guide hole, ensuring the positioning accuracy of the mold during opening and closing, thereby effectively reducing dimensional deviations and positional offsets in the plastic parts. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of this utility model;

[0030] Figure 2 This is a side view cross-sectional three-dimensional structural schematic diagram of the present invention;

[0031] Figure 3 This utility model Figure 1 Enlarged structural diagram at point A;

[0032] Figure 4 This utility model Figure 2 Enlarged structural diagram at point B.

[0033] In the diagram: 1. Upper mold; 101. Lower pressure seat; 102. Upper mold base; 103. Mold groove; 104. Cooling pipe; 105. Mounting hole; 106. Misalignment groove; 107. Misalignment ring; 108. Bolt hole; 2. Lower mold; 201. Base; 202. Module base; 203. Air pipe connector; 204. Module; 205. Guide rod; 3. Replacement mechanism; 301. Guide cylinder; 302. Guide hole; 303. Arc chamfer; 304. Arc groove; 4. Fixing mechanism; 401. Screw; 402. Hexagonal hole. Detailed Implementation

[0034] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0035] Example 1:

[0036] An injection mold for thin-walled parts of household appliance casings, such as Figures 1-4As shown, it includes an upper mold 1 and a lower mold 2. The upper mold 1 includes a lower pressure seat 101 and an upper mold seat 102. The bottom of the upper mold seat 102 is provided with four mounting holes 105 on the four sides. The upper part of the mounting hole 105 is provided with a misalignment groove 106, and a misalignment ring 107 is provided in the misalignment groove 106. A bolt hole 108 is opened on one side of the misalignment groove 106, and the bolt hole 108 extends to one side of the upper mold seat 102.

[0037] A replacement mechanism 3 is installed within the mounting hole 105. The replacement mechanism 3 includes a guide cylinder 301, which is inserted into the mounting hole 105. An arc-shaped groove 304 is formed on the outer side of the guide cylinder 301, which is aligned with the misalignment groove 106. The misalignment ring 107 abuts against the arc-shaped groove 304. Through the design of the upper mold 1 and the lower mold 2, the mold separation and mold closing functions are realized. The four mounting holes 105 at the bottom of the upper mold base 102 and the internal misalignment groove 106 and misalignment ring 107 structure provide precise positioning and installation space for the replacement mechanism 3. The bolt holes 108 facilitate the installation of the fixing mechanism 4, enhancing the overall stability and maintainability of the mold.

[0038] See Figure 1 , Figure 4 The replacement mechanism 3 has four sets, each fitting into one of the four mounting holes 105. This design ensures that the mold receives uniform and stable support in all four directions. This layout not only improves the stability of the mold during injection molding but also facilitates the independent replacement and maintenance of the replacement mechanism 3, thereby increasing the mold's flexibility and service life.

[0039] See Figure 3 , Figure 4 A fixing mechanism 4 is screwed into the bolt hole 108. The fixing mechanism 4 includes a screw 401. The screw 401 is screwed into the bolt hole 108, which securely fixes the replacement mechanism 3 to the upper mold base 102. This fixing method is not only simple and easy to implement, but also provides sufficient fastening force to ensure that the replacement mechanism 3 will not loosen or shift during the injection molding process.

[0040] See Figure 1 , Figure 2 The screw 401 has a hexagonal hole 402 on its outer side, which abuts against the misalignment ring 107. The design of the hexagonal hole 402 allows the screw 401 to be easily tightened or loosened using tools such as wrenches, improving the assembly and disassembly efficiency of the mold. At the same time, the abutment between the screw 401 and the misalignment ring 107 further enhances the stability of the replacement mechanism 3 on the upper mold base 102.

[0041] See Figure 2 , Figure 3The bottom of the guide cylinder 301 has a guide hole 302, which is inserted and matched with the guide rod 205. The insertion design of the guide hole 302 and the guide rod 205 enables the upper mold 1 and the lower mold 2 to maintain accurate positioning and centering during mold closing and opening. This design not only improves the dimensional accuracy and surface quality of the injection molded parts, but also reduces the risk of mold wear and damage.

[0042] Example 2:

[0043] See Figure 1 , Figure 4 The lower pressure seat 101 is detachably connected to the bottom of the upper mold seat 102. The bottom center of the upper mold seat 102 has multiple mold grooves 103. This detachable connection design allows the lower pressure seat 101 and the upper mold seat 102 to be easily separated and combined, facilitating mold maintenance and replacement. Simultaneously, the multiple mold grooves 103 at the bottom of the upper mold seat 102 improve the mold's production efficiency and flexibility, enabling the simultaneous injection molding of multiple parts.

[0044] See Figure 1 , Figure 2 A cooling pipe 104 is provided on one side of the upper mold base 102. The cooling pipe 104 allows heat to be dissipated quickly during the injection molding process, accelerating the curing and cooling speed of the plastic. This not only improves the production efficiency and quality of injection molded parts, but also reduces the risk of thermal stress and deformation caused by high temperature in the mold.

[0045] See Figure 2 , Figure 3 , Figure 4 The lower mold 2 includes a base 201, a module seat 202 on the top of the base 201, and multiple modules 204 at the top center of the module seat 202. Through the modular design of the base 201, module seat 202, and modules 204, the lower mold 2 can be easily combined or replaced according to production needs. This design not only improves the versatility and flexibility of the mold, but also reduces production costs and maintenance difficulty.

[0046] See Figure 1 , Figure 4 Four guide rods 205 are provided on the top outer side of the module base 202, and an air pipe connector 203 is provided on one side of the module base 202. The design of the four guide rods 205 provides additional support and guidance for the closing and opening of the upper mold 1 and the lower mold 2, improving the stability and precision of the mold. At the same time, the air pipe connector 203 facilitates the connection and use of pneumatic components, improving the automation level and production efficiency of the mold.

[0047] See Figure 1 , Figure 2The bottom of the guide hole 302 is designed with an arc-shaped chamfer 303. This arc-shaped chamfer 303 design makes the guide cylinder 301 insert into the guide rod 205 more smoothly, reducing friction and wear. This design not only improves the assembly efficiency and service life of the mold, but also reduces noise and heat generated by friction, thus improving the overall performance of the mold.

[0048] The implementation principle of this embodiment is as follows: First, ensure that all components of the upper mold 1 and the lower mold 2 are intact, especially the replacement mechanism 3 and the fixing mechanism 4 in the upper mold should be in good condition. Check whether the bottom arc chamfer 303 of the guide hole 302 of the guide cylinder 301 is complete to ensure smooth insertion.

[0049] Insert the guide cylinder 301 into the mounting hole 105 at the bottom of the upper mold base 102, ensuring that the arc-shaped groove 304 on the outside of the guide cylinder is aligned with the misalignment groove 106 in the mounting hole, and that the misalignment ring 107 abuts against the arc-shaped groove 304. Screw the screw 401 of the fixing mechanism 4 into the bolt hole 108, so that the screw 401 abuts against the misalignment ring 107, thereby firmly fixing the guide cylinder 301 on the upper mold base 102.

[0050] Place the base 201 of the lower mold 2 stably on the workbench, install the module seat 202 on the top of the base 201, and install multiple modules 204 at the top center of the module seat 202. Connect the upper mold 1 and the lower mold 2 to ensure that the guide hole 302 of the guide cylinder 301 is inserted and matched with the guide rod 205 on the top of the module seat 202 of the lower mold 2.

[0051] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. An injection mold for thin-walled parts of household appliance housings, characterized in that: The upper mold (1) and the lower mold (2) are included. The upper mold (1) includes a lower pressure seat (101) and an upper mold base (102). The bottom of the upper mold base (102) is provided with four mounting holes (105) on the four sides. The upper part of the mounting holes (105) is provided with a misalignment groove (106) and a misalignment ring (107) is provided in the misalignment groove (106). A bolt hole (108) is opened on one side of the misalignment groove (106) and the bolt hole (108) extends through to one side of the upper mold base (102). A replacement mechanism (3) is installed in the mounting hole (105). The replacement mechanism (3) includes a guide cylinder (301), which is inserted into the mounting hole (105). An arc-shaped groove (304) is provided on the outer side of the guide cylinder (301). The arc-shaped groove (304) is opposite to the misalignment groove (106), and the misalignment ring (107) abuts against the arc-shaped groove (304).

2. The injection mold for thin-walled parts of household appliance housings according to claim 1, characterized in that: The replacement mechanism (3) is provided in four sets, and the four sets of replacement mechanisms (3) are respectively matched with four mounting holes (105).

3. The injection mold for thin-walled parts of household appliance housings according to claim 1, characterized in that: A fixing mechanism (4) is screwed into the bolt hole (108), and the fixing mechanism (4) includes a screw (401).

4. The injection mold for thin-walled parts of household appliance housings according to claim 3, characterized in that: The screw (401) has a hexagonal hole (402) on its outer side, and the screw (401) abuts against the misalignment ring (107).

5. The injection mold for thin-walled parts of household appliance housings according to claim 1, characterized in that: The bottom of the guide cylinder (301) is provided with a guide hole (302), which is compatible with the guide rod (205).

6. The injection mold for thin-walled parts of household appliance housings according to claim 1, characterized in that: The bottom of the lower pressure seat (101) is detachably connected to the upper mold seat (102), and the bottom center of the upper mold seat (102) is provided with multiple mold grooves (103).

7. The injection mold for thin-walled parts of household appliance housings according to claim 1, characterized in that: A cooling pipe (104) is provided on one side of the upper mold base (102).

8. The injection mold for thin-walled parts of household appliance housings according to claim 1, characterized in that: The lower mold (2) includes a base (201), and a module seat (202) is provided on the top of the base (201). Multiple modules (204) are provided at the top center of the module seat (202).

9. The injection mold for thin-walled parts of household appliance housings according to claim 8, characterized in that: Four guide rods (205) are provided on the top outer side of the module base (202), and an air pipe connector (203) is provided on one side of the module base (202).

10. The injection mold for thin-walled parts of household appliance housings according to claim 5, characterized in that: The bottom of the guide hole (302) is provided with an arc-shaped chamfer (303) structure.

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