Wear-resistant insert assembly of household appliance part injection mold

Abstract

The utility model relates to the technical field of mold wear resistance, and discloses a wear-resistant insert assembly of a household appliance part injection mold, which comprises a lower mold I, a plurality of fixing columns are fixedly connected to the rear end of the right side of the lower mold I, and a plurality of cylindrical holes are formed in the front side of the right end of the lower mold I; a second lower mold is slidably connected to the outer wall of the fixing column, the left side of the second lower mold is slidably connected with the right side of the first lower mold, a first threaded hole is formed in the left side of the bottom of the second lower mold, and a third threaded hole is formed in the right side of the bottom of the first lower mold. According to the injection mold, firstly, the bolt is taken out from the third threaded hole of the first lower mold and the first threaded hole of the second lower mold, at the moment, the first lower mold and the second lower mold are fixed together through the bolt, injection molding can be conducted through the liquid injection opening, and the first lower mold and the second lower mold can be replaced independently; therefore, the overall wear resistance is improved.

Description

Technical Field

[0001] This utility model relates to the field of mold wear resistance technology, and in particular to a wear-resistant insert assembly for injection molds of household appliance parts. Background Technology

[0002] Home appliance components are the basic units that make up all kinds of home appliances. Just like the organs of the human body, each component has its specific function and works together to enable the home appliance to operate normally. From simple screws and washers to complex circuit boards and motors, they all fall into the category of home appliance components. The quality of these components is directly related to the performance, reliability and service life of the home appliance. If a critical component malfunctions, the entire appliance may fail to function properly. In the injection molds for appliance components, wear-resistant inserts are considered core support components. They are mainly composed of inserts made of special materials, which are precisely embedded in the wear-prone areas of the mold. Their role is crucial. On the one hand, due to the repeated scouring and friction of the molten plastic on the mold during injection molding, the wear-resistant inserts act like a sturdy shield, greatly reducing the wear on the mold body and extending the overall service life of the mold thanks to their excellent wear resistance. Under frequent mold opening and closing and the impact of high-speed plastic flow, the inserts protect the critical molding areas from rapid erosion. On the other hand, the inserts are removable and replaceable. When the inserts wear down to a certain extent, it is not necessary to replace the entire mold, reducing maintenance and time costs and ensuring the continuous and efficient production of appliance components. However, over a long period of use, the mold will wear down, thus affecting production efficiency.

[0003] Existing wear-resistant components typically consist of an ejector pin, an external slide, a support slide, and a limiting block. During injection molding, the ejector pin plays a crucial role. Positioned at a certain angle, it moves along the inclined direction under the drive of a power unit when the mold opens and closes for demolding, pushing the plastic part out of the mold cavity. In the injection molding of some appliance parts with undercut structures, the ejector pin cleverly ejects the undercut parts, achieving smooth demolding. The external slide, installed outside the ejector pin, provides additional support and guidance, reducing swaying during movement and ensuring precise action. The support slide further ensures the smooth operation of the ejector pin. Together, they make the entire demolding process smooth and efficient. However, this type of wear-resistant component still experiences wear during prolonged injection molding, and the worn areas cannot be replaced, affecting injection molding results and work efficiency. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a wear-resistant insert assembly for injection molds of household appliance parts, aiming to improve the problem that the existing wear-resistant method still experiences wear during long-term injection molding, making it impossible to replace the worn areas, thus affecting the injection molding results and work efficiency.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a wear-resistant insert assembly for an injection mold of household appliance parts, comprising a lower mold 1, wherein multiple fixing posts are fixedly connected to the rear end of the right side of the lower mold 1, and multiple cylindrical holes are opened on the front side of the right end of the lower mold 1, a lower mold 2 is slidably connected to the outer wall of the fixing posts, the left side of the lower mold 2 is slidably connected to the right side of the lower mold 1, a threaded hole 1 is opened on the left side of the bottom of the lower mold 2, a threaded hole 3 is opened on the right side of the bottom of the lower mold 1, a bolt is threadedly connected to the inner wall of the threaded hole 1, a bottom fixing plate is threadedly connected to the bottom of the outer wall of the bolt, a threaded hole 2 is opened on the bottom of the bottom fixing plate, a clamping plate is fixedly connected to the top of the bottom fixing plate near the middle, a semi-circular groove is opened on the top of the clamping plate, an upper mold is slidably connected to the top of the lower mold 1, and a fixing mechanism is provided on the top of the lower mold 1 for fixing operations.

[0006] As a further description of the above technical solution:

[0007] The fixing mechanism includes a side fixing plate, the bottom of which is slidably connected to the top of the lower mold, a circular column fixedly connected to the front end of the top of the side fixing plate, a circular column fixedly connected to the rear end of the top of the side fixing plate, a baffle plate two fixedly connected to the front side of the top of the upper mold, the top of the baffle plate two having multiple square grooves, the inner wall of the square grooves being slidably connected to the outer wall of the square column, and a baffle plate one fixedly connected to the rear side of the top of the upper mold, the top of the baffle plate one having multiple circular grooves, the inner wall of the circular grooves being slidably connected to the outer wall of the circular column.

[0008] As a further description of the above technical solution:

[0009] The lower mold 2 has a part groove 1 near the edge on the left end, and the lower mold 1 has a liquid injection port near the middle on the front side.

[0010] As a further description of the above technical solution:

[0011] The bottom of the lower mold is fixedly connected to a base plate, and the top of each side fixing plate is provided with multiple circular holes.

[0012] As a further description of the above technical solution:

[0013] The upper mold has an injection line at the bottom front side, and the bottom of the inner wall of the injection line is slidably connected to the top of the lower mold.

[0014] As a further description of the above technical solution:

[0015] Multiple reinforcing ribs are fixedly connected to the top four sides of the base plate, and the inner side of the reinforcing ribs is fixedly connected to the outer side of the lower mold.

[0016] As a further description of the above technical solution:

[0017] The top of each upper mold is fixedly connected with multiple fixing rings, and the top of each fixing ring is fixedly connected with a handle.

[0018] As a further description of the above technical solution:

[0019] The bottom of the upper mold has a part groove two near the middle, and the inner wall of the part groove two is slidably connected to the top of the lower mold one.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, the bolt is first removed from the threaded hole three of the lower mold one and the threaded hole one of the lower mold two. At this time, the lower mold one and the lower mold two can be separated. Then, the new lower mold one and the lower mold two are clamped together through the internal fixing post and cylindrical hole. Then, the bolt is rotated up through the threaded hole two on the fixing plate. At this time, the bolt rotates into the threaded hole three on the lower mold one and the threaded hole one on the lower mold two. At this time, the bolt fixes the lower mold one and the lower mold two together. Then, injection molding can be performed through the injection port. This realizes that when the lower mold one and the lower mold two are worn and damaged, the lower mold one and the lower mold two can be replaced separately, thereby improving the overall wear resistance.

[0022] 2. In this utility model, when injection molding is required, the upper mold is placed between the side fixing plates. There is a square column and a round column on the top of the side fixing plate. Then, the baffle one fixed on the upper mold is clamped on the side fixing plate through the round column, and the baffle two on the upper mold is fixed on the side fixing plate through the square column. At this time, the injection molding operation can be performed. This device prevents injection failure and mold damage caused by the upper mold being placed backward. Attached Figure Description

[0023] Figure 1 This is a front perspective view of a wear-resistant insert assembly for an injection mold of a household appliance component proposed in this utility model;

[0024] Figure 2This is a top perspective view of a wear-resistant insert assembly for an injection mold of a household appliance component proposed in this utility model.

[0025] Figure 3 This is a partial structural exploded view of the side fixing plate of a wear-resistant insert assembly for an injection mold of a household appliance component proposed in this utility model.

[0026] Figure 4 This is a partial structural exploded view of the base plate of a wear-resistant insert assembly for an injection mold of a household appliance component, as proposed in this utility model.

[0027] Figure 5 This is a partial structural exploded view of the lower mold of a wear-resistant insert assembly for an injection mold of a household appliance component, as proposed in this utility model.

[0028] Legend:

[0029] 1. Lower mold one; 2. Fixing mechanism; 201. Side fixing plate; 202. Square column; 203. Circular column; 204. Baffle one; 205. Baffle two; 206. Circular groove; 207. Square groove; 3. Lower mold two; 4. Fixing column; 5. Circular hole; 6. Threaded hole one; 7. Clamping plate; 8. Semi-circular groove; 9. Bottom fixing plate; 10. Threaded hole two; 11. Bolt; 12. Threaded hole three; 13. Part groove one; 14. Injection port; 15. Base plate; 16. Part groove two; 17. Injection line; 18. Fixing ring; 19. Handle; 20. Circular hole; 21. Upper mold; 22. Reinforcing rib. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Please see the appendix Figure 1 Appendix Figure 4 and attached Figure 5This utility model provides an embodiment of a wear-resistant insert assembly for an injection mold of a household appliance component, comprising a lower mold 1. Multiple fixing posts 4 are fixedly connected to the rear right side of the lower mold 1, providing support. Multiple cylindrical holes 5 are formed on the front right side of the lower mold 1. A lower mold 2 3 is slidably connected to the outer wall of the fixing posts 4. The left side of the lower mold 2 3 is slidably connected to the right side of the lower mold 1, allowing the entire assembly to slide. A threaded hole 6 is formed on the left side of the bottom of the lower mold 2 3, and a threaded hole 6 is formed on the right side of the bottom of the lower mold 1. The device has a threaded hole 12, and a bolt 11 is threadedly connected to the inner wall of the threaded hole 16. The bolt 11 serves as a fixation mechanism. A bottom fixing plate 9 is threadedly connected to the bottom of the outer wall of the bolt 11. A threaded hole 10 is opened at the bottom of the bottom fixing plate 9. A clamping plate 7 is fixedly connected to the top of the bottom fixing plate 9 near the middle, so that the whole device can be clamped. A semi-circular groove 8 is opened at the top of the clamping plate 7. An upper mold 21 is slidably connected to the top of the lower mold 1. A fixing mechanism 2 is provided at the top of the lower mold 1. The fixing mechanism 2 is used for fixing operations.

[0032] Specifically, multiple fixing posts 4 are fixedly connected to the rear right side of the lower mold 1. These fixing posts 4 not only provide support but also ensure the stability and durability of the mold. Multiple cylindrical holes 5 are formed on the front right side of the lower mold 1. These holes facilitate the assembly and disassembly of the mold and provide space for the sliding connection of the fixing posts 4. The outer wall of the fixing posts 4 is slidably connected to the inner wall of the lower mold 2 3, allowing the lower mold 2 3 to move flexibly on the lower mold 1. The left side of the lower mold 2 3 is tightly connected to the right side of the lower mold 1 through a sliding connection, ensuring a tight fit while allowing a certain range of motion to adapt to different processing needs. At the bottom left side of the lower mold 2 3... A threaded hole 6 is provided at the location, and the inner wall of the threaded hole 6 is connected to the bolt 11 by threads, which enhances the connection. A threaded hole 3 12 is also provided at the bottom right side of the lower mold 1, which echoes the threaded hole 6 and together ensures the stability of the mold assembly. The bottom of the outer wall of the bolt 11 is connected to the bottom fixing plate 9 by threads. The bottom of the bottom fixing plate 9 has a threaded hole 2 10, which makes the entire mold structure more stable. The top of the bottom fixing plate 9 is fixedly connected to the clamping plate 7 near the middle. The top of the clamping plate 7 has a semi-circular groove 8. The semi-circular groove 8 not only provides a precise reference for the positioning of the mold, but also allows it to be easily matched with the corresponding parts to realize the quick replacement and adjustment of the mold.

[0033] Please see the appendix Figure 1 Appendix Figure 2 and attached Figure 3The fixing mechanism 2 includes a side fixing plate 201. The bottom of the side fixing plate 201 is slidably connected to the top of the lower mold 1. A circular column 203 is fixedly connected to the front end of the top of the side fixing plate 201, making the overall connection more stable. A circular column 203 is fixedly connected to the rear end of the top of the side fixing plate 201. A baffle 205 is fixedly connected to the front side of the top of the upper mold 21. Multiple square grooves 207 are provided on the top of the baffle 205, making the overall connection more stable. The inner wall of the square groove 207 is slidably connected to the outer wall of the square column 202. A baffle 204 is fixedly connected to the rear side of the top of the upper mold 21, which serves as a shield. Multiple circular grooves 206 are provided on the top of the baffle 204. The inner wall of the circular groove 206 is slidably connected to the outer wall of the circular column 203, making the overall connection more stable.

[0034] Specifically, the fixing mechanism 2 includes a side fixing plate 201. The bottom of the side fixing plate 201 is slidably connected to the top of the lower mold 1, thereby ensuring relative movement between the two. A circular column 203 is fixedly connected to the front end of the top of the side fixing plate 201, and another circular column 203 is fixedly connected to the rear end of the top, so that the side fixing plate 201 can provide stable support and positioning when used with the upper mold 21. A baffle 205 is fixedly connected to the front top of the upper mold 21. The top of the baffle 205 has multiple square grooves 207. The inner walls of these square grooves 207 can be slidably connected to the outer walls of the square columns 202, ensuring a tight fit between the baffle 205 and the square columns 202. The upper mold 21 is fixedly connected to another baffle 204 on its top rear side. The top of the baffle 204 also has multiple circular grooves 206. The inner walls of these circular grooves 206 can also slide to connect with the outer walls of the previously mentioned circular pillars 203, so that the baffle 204 can be adjusted according to the position of the circular pillars 203, thereby providing flexible positioning and support during operation. Through the cooperation of the side fixing plate 201 with the upper mold 21, and the sliding connection between the grooves on the baffle 205 and the baffle 204 and the corresponding pillars, the fixing mechanism 2 of the present invention can effectively fix and position the upper and lower molds, ensuring the stability of the entire mold system and the flexibility of operation.

[0035] Please see the appendix Figure 1 and attached Figure 2The lower mold 23 has a part groove 13 near the edge on the left side. The front side of the lower mold 1 has a liquid injection port 14 near the middle, so that the whole can be injected with liquid through the liquid injection port 14. The bottom of the lower mold 1 is fixedly connected to the bottom plate 15. The top of the side fixing plate 201 has multiple circular holes 20. The bottom front side of the upper mold 21 has a liquid injection line 17, which can be injected with liquid. The bottom of the inner wall of the liquid injection line 17 is slidably connected to the top of the lower mold 1.

[0036] Specifically, a part groove 13 is provided on the left side of the lower mold 2 3 near the edge to accommodate and fix specific parts. At the same time, a liquid injection port 14 is connected to the front side of the lower mold 1 near the middle. This liquid injection port 14 is a key channel for injecting liquid material. To ensure the stability and durability of the lower mold 1, a base plate 15 is fixedly connected to its bottom. The base plate 15 not only provides support but may also help to distribute pressure and reduce wear during use. In addition, multiple circular holes 20 are provided on the top of the side fixing plates 201. The circular holes 20 may be used to install positioning pins or other fixing elements to ensure the precise alignment and fixation of the mold assembly. A liquid injection line 17 is specially provided on the bottom front side of the upper mold 21. This liquid injection line 17 is a specific path for guiding the liquid material to flow into the mold. It is worth noting that the bottom of the inner wall of the liquid injection line 17 is slidably connected to the top of the lower mold 1, ensuring smooth flow of liquid material during injection and reducing heat generated by friction, thereby improving production efficiency and product quality.

[0037] Please see the appendix Figure 1 Appendix Figure 2 and attached Figure 4 The top of the base plate 15 is fixedly connected with multiple reinforcing ribs 22. The inner side of the reinforcing ribs 22 is fixedly connected to the outer side of the lower mold 1, making the overall connection more stable. The top of the upper mold 21 is fixedly connected with multiple fixing rings 18. The top of the fixing rings 18 is fixedly connected with handles 19, which can be used for pulling and pulling operations. The bottom of the upper mold 21 is provided with a part groove 16 near the middle. The inner wall of the part groove 16 is slidably connected to the top of the lower mold 1, making the overall connection more stable.

[0038] Specifically, multiple reinforcing ribs 22 are provided and fixed around the top edge of the base plate 15. The inner edges of these reinforcing ribs 22 are firmly connected to the outer edge of the lower mold 1. In addition, multiple fixing rings 18 are also evenly provided and fixed on the upper edge of the upper mold 21. Each fixing ring 18 has a handle 19 fixedly connected to its upper end so that the operator can easily grasp and move the upper mold 21. At the bottom of the upper mold 21, a part groove 2 16 is provided near the center. The inner wall of this part groove 2 16 can slide and connect with the top edge of the lower mold 1, thereby ensuring that the upper mold 21 and the lower mold 1 can move smoothly relative to each other to complete specific processing tasks.

[0039] Working principle: When wear occurs and replacement is needed, first remove bolt 11 from the threaded hole 12 of lower mold 1 and the threaded hole 6 of lower mold 2. At this time, bolt 11 is removed from the bottom fixing plate 9, and lower mold 1 and lower mold 2 can be separated. Then, the new lower mold 1 and lower mold 2 are locked together through the internal fixing post 4 and cylindrical hole 5. At this time, lower mold 1 and lower mold 2 will be locked together. Then, the bottom fixing plate 9 with the semi-circular groove 8 is installed into lower mold 1 and lower mold 2. In step 3, the bolt 11 is then rotated through the threaded hole 10 on the bottom fixing plate 9. At this time, the bolt 11 rotates into the threaded hole 12 on the lower mold 1 and the threaded hole 6 on the lower mold 2. The bolt 11 fixes the lower mold 1 and the lower mold 2 together, and injection molding can then be performed through the injection port 14. This allows the lower mold 1 and the lower mold 2 to be replaced individually when they are worn or damaged, thereby improving the overall wear resistance.

[0040] When injection molding is required, the upper mold 21 is placed between the side fixing plates 201. There is a square post 202 and a round post 203 on the top of the side fixing plate 201. Then, the baffle 204 fixed on the upper mold 21 is locked onto the side fixing plate 201 through the round post 203. At the same time, the baffle 205 on the upper mold 21 is fixed onto the side fixing plate 201 through the square post 202. At this time, the injection molding operation can be performed. This device prevents injection molding failure and mold damage caused by the upper mold 21 being placed backward.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A wear-resistant insert assembly for an injection mold of a household appliance component, comprising a lower mold (1), characterized in that: Multiple fixed posts (4) are fixedly connected to the rear end of the right side of the lower mold 1 (1). Multiple cylindrical holes (5) are opened on the front side of the right end of the lower mold 1 (1). The outer wall of the fixed posts (4) is slidably connected to the lower mold 2 (3). The left side of the lower mold 2 (3) is slidably connected to the right side of the lower mold 1 (1). The bottom left side of the lower mold 2 (3) is provided with a threaded hole 1 (6). The bottom right side of the lower mold 1 (1) is provided with a threaded hole 3 (12). The inner wall of the threaded hole 1 (6) is threaded. The bottom of the outer wall of the bolt (11) is threaded with a bottom fixing plate (9). The bottom of the bottom fixing plate (9) has a threaded hole (10). The top of the bottom fixing plate (9) is fixedly connected to a clamping plate (7) near the middle. The top of the clamping plate (7) has a semi-circular groove (8). The top of the lower mold (1) is slidably connected to an upper mold (21). The top of the lower mold (1) is provided with a fixing mechanism (2). The fixing mechanism (2) is used for fixing operations.

2. The wear-resistant insert assembly for an injection mold of a household appliance component according to claim 1, characterized in that: The fixing mechanism (2) includes a side fixing plate (201), the bottom of which is slidably connected to the top of the lower mold (1), a circular column (203) is fixedly connected to the front end of the top of the side fixing plate (201), a circular column (203) is fixedly connected to the rear end of the top of the side fixing plate (201), a baffle (205) is fixedly connected to the front side of the top of the upper mold (21), a plurality of square grooves (207) are provided on the top of the baffle (205), the inner wall of the square grooves (207) is slidably connected to the outer wall of the square column (202), a baffle (204) is fixedly connected to the rear side of the top of the upper mold (21), a plurality of circular grooves (206) are provided on the top of the baffle (204), the inner wall of the circular grooves (206) is slidably connected to the outer wall of the circular column (203).

3. The wear-resistant insert assembly for an injection mold of a household appliance component according to claim 1, characterized in that: The lower mold 2 (3) has a part groove 1 (13) near the edge on the left end, and the lower mold 1 (1) has a liquid injection port (14) near the middle on the front side.

4. The wear-resistant insert assembly for an injection mold of a household appliance component according to claim 2, characterized in that: The bottom of the lower mold (1) is fixedly connected to a base plate (15), and the top of the side fixing plate (201) is provided with multiple circular holes (20).

5. The wear-resistant insert assembly for an injection mold of a household appliance component according to claim 1, characterized in that: The upper mold (21) has an injection line (17) on the front side of its bottom, and the bottom of the inner wall of the injection line (17) is slidably connected to the top of the lower mold (1).

6. The wear-resistant insert assembly for an injection mold of a household appliance component according to claim 4, characterized in that: The bottom plate (15) is fixedly connected to a number of reinforcing ribs (22) around its top, and the reinforcing ribs (22) are fixedly connected to the outer side of the lower mold (1) on the inward side.

7. The wear-resistant insert assembly for an injection mold of a household appliance component according to claim 1, characterized in that: The top of the upper mold (21) is fixedly connected with a plurality of fixing rings (18), and the top of the fixing rings (18) is fixedly connected with a handle (19).

8. The wear-resistant insert assembly for an injection mold of a household appliance component according to claim 1, characterized in that: The bottom of the upper mold (21) near the middle is provided with a part groove two (16), and the inner wall of the part groove two (16) is slidably connected to the top of the lower mold one (1).

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