Washing machine roller injection mold convenient to demold

Abstract

The utility model discloses a washing machine drum injection mold convenient to demold, which relates to the technical field of injection molds and comprises a fixed mold, a movable mold, an auxiliary demolding component and a telescopic adjusting component, the movable mold is provided with an injection mold head, and the fixed mold is provided with a mold cavity. Wherein the auxiliary demolding assembly comprises an annular insertion plate and a gas conveying pipe, and the gas conveying pipe is provided with a plurality of gas outlet pipes; the injection mold head is provided with an air groove; after injection molding is completed, the telescopic air cylinder drives the annular inserting plate in the air groove in the injection molding die head to retract, the exposed air pipe injects air into the washing machine roller, the die is separated from the washing machine roller through permeability and pressure of the air, and therefore the washing machine roller is prevented from being damaged. The demolding efficiency of the washing machine drum is improved, the drum is prevented from being abraded in the demolding process, the injection molding efficiency is improved, and the product quality is guaranteed.

Description

Technical Field

[0001] This utility model relates to the technical field of injection molds, specifically to an injection mold for a washing machine drum that is easy to demold. Background Technology

[0002] Injection molding is a process that uses molten plastic to create a semi-finished part of a certain shape through operations such as pressurization, injection, cooling, and release. The drum in a washing machine consists of a cylindrical plastic part and a stainless steel inner tub. The plastic part in the washing machine drum is usually made by injection molding.

[0003] Currently, washing machine drums are typically manufactured using injection molding machines. A raised, movable mold is inserted into the cavity of a fixed mold, and molten plastic is injected. After cooling, the process is complete. During demolding, the drum, due to cooling, will shrink tightly onto the raised movable mold, making it difficult to remove. Furthermore, forcibly pulling it out mechanically can cause wear on the washing machine drum, affecting the efficiency of injection molding and the quality of the plastic parts. Utility Model Content

[0004] This invention provides a washing machine drum injection mold that facilitates demolding and has the advantage of high demolding efficiency, thus solving the problem that the drum is tightly compressed on the mold after injection molding and is inconvenient to demold in existing injection molds.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a washing machine drum injection mold for easy demolding, comprising a fixed mold and a movable mold, the movable mold having a protruding injection mold head, the fixed mold having a mold cavity, the injection mold head cooperating with the mold cavity, and further comprising an auxiliary demolding component and a telescopic adjustment component, wherein:

[0006] The auxiliary demolding assembly includes a movable annular insert plate and an air supply pipe, the air supply pipe being equipped with multiple air outlet pipes for jet demolding;

[0007] The front end of the injection mold head is provided with an air groove, the annular insert plate is movably connected to the air groove, and the air outlet pipe is connected to the air groove.

[0008] The telescopic adjustment component is located on the side of the injection mold head and is used to drive the annular insert plate to extend and retract within the air groove.

[0009] As a preferred technical solution of this utility model, the annular insert plate is a symmetrically arranged semi-circular incomplete arc plate, the gas transmission pipe path is circular, and the gas outlet pipe is arranged in an annular equidistant arrangement along the inner wall of the gas transmission pipe in the direction of the center of the circle formed by the gas transmission pipe.

[0010] As a preferred embodiment of this utility model, the air outlet pipe is embedded in the inner wall of the air groove and the outlet of the air outlet pipe is flush with the inner wall of the air groove, and the annular insert plate cooperates with the air outlet pipe.

[0011] As a preferred embodiment of this utility model, the air supply pipe is equipped with an air inlet pipe that extends from the side end of the injection mold head along the inside of the injection mold head for connecting to external equipment.

[0012] As a preferred embodiment of this utility model, the telescopic adjustment assembly includes a telescopic cylinder, a transmission frame is installed at the output end of the telescopic cylinder, a transmission disc is installed on the transmission frame, and symmetrically arranged annular inserts are fixedly connected to the transmission disc.

[0013] As a preferred technical solution of this utility model, the injection mold head includes a front template and a hollow mold cylinder in the middle. An air groove is set at the front of the template. An installation chamber is installed on the side of the injection mold head. The telescopic cylinder is fixed in the installation chamber. The transmission frame and transmission disc are movably connected in the mold cylinder. The output rod of the telescopic cylinder passes through the installation chamber and the injection mold head and extends into the mold cylinder to connect with the transmission frame.

[0014] As a preferred embodiment of this utility model, the movable mold is equipped with a positioning plate and an mounting plate for connecting the hydraulic mobile equipment, the fixed mold is equipped with a connecting plate and a fixing plate for fixing, the positioning plate is equipped with a plurality of positioning pins, and the connecting plate is provided with a plurality of positioning holes that are movably connected to the positioning pins respectively.

[0015] Compared with the prior art, this utility model provides a washing machine drum injection mold that is easy to demold, and has the following beneficial effects:

[0016] After injection molding is completed, this invention uses a telescopic cylinder to retract the annular insert plate in the air groove of the injection mold head, exposing the internal air pipe to inject air into the washing machine drum. Through the permeability and pressure of the gas, the mold and the washing machine drum are separated. When the injected gas is hot steam, it can expand the cooled and compressed drum, improving the demolding efficiency of the washing machine drum, avoiding wear of the drum during demolding, improving injection molding efficiency and ensuring product quality. Attached Figure Description

[0017] Figure 1 This is a schematic diagram showing the positions of the movable mold and the fixed mold of this utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the movable module of this utility model;

[0019] Figure 3 This is a schematic diagram showing the connection between the auxiliary demolding component and the telescopic adjustment component of this utility model;

[0020] Figure 4 This is a schematic diagram showing the arrangement of the outlet pipe on the gas transmission pipe according to this utility model;

[0021] Figure 5This is a schematic diagram showing the installation position of the air outlet pipe of this utility model;

[0022] Figure 6 This is a schematic diagram of the overall structure of the fixed mold of this utility model;

[0023] Figure 7 This is a schematic diagram of the overall structure of the movable module of this utility model.

[0024] In the diagram: 1. Movable mold; 11. Injection mold head; 111. Template; 112. Mold cylinder; 113. Air groove; 12. Mounting plate; 13. Positioning plate; 14. Positioning pin; 15. Mounting chamber; 2. Fixed mold; 21. Fixing plate; 22. Connecting plate; 23. Positioning hole; 3. Auxiliary demolding assembly; 31. Annular insert plate; 32. Air supply pipe; 33. Air outlet pipe; 34. Air inlet pipe; 4. Telescopic adjustment assembly; 41. Telescopic cylinder; 42. Transmission frame; 43. Transmission disc. Detailed Implementation

[0025] 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. Example 1

[0026] Please see the appendix Figures 1-7 This utility model discloses a convenient demolding injection mold for a washing machine drum, including a fixed mold 2 and a movable mold 1. The movable mold 1 is provided with a protruding injection mold head 11, and the fixed mold 2 is provided with a mold cavity. The injection mold head 11 cooperates with the mold cavity. The invention is characterized by further including an auxiliary demolding component 3 and a telescopic adjustment component 4, wherein:

[0027] The auxiliary demolding assembly 3 includes a movable annular insert plate 31 and an air supply pipe 32, and the air supply pipe 32 is equipped with multiple air outlet pipes 33 for air jet demolding.

[0028] The injection mold head 11 has an air groove 113 at the front end, the annular insert plate 31 is movably connected to the air groove 113, and the air outlet pipe 33 is connected to the air groove 113.

[0029] The telescopic adjustment component 4 is located on the side of the injection mold head 11 and is used to drive the annular insert plate 31 to extend and retract within the air groove 113.

[0030] Please see the appendix Figure 5The annular insert plate 31 is a symmetrically arranged semi-circular incomplete arc plate. The path of the gas supply pipe 32 is circular. The gas outlet pipe 33 is arranged in annular equidistant arrangement along the inner wall of the gas supply pipe 32 towards the center of the circle formed by the gas supply pipe 32. The gas outlet pipe 33 is embedded in the inner wall of the gas groove 113 and the opening of the gas outlet pipe 33 is flush with the inner wall of the gas groove 113. The annular insert plate 31 cooperates with the gas outlet pipe 33.

[0031] Furthermore, the air supply pipe 32 is equipped with an air inlet pipe 34 that extends from the side end of the injection mold head 11 along the inside of the injection mold head 11 for connecting to external equipment.

[0032] Specifically, hot air enters the air supply pipe 32 through the air inlet pipe 34 and is finally ejected from the air outlet pipe 33. The ejected gas uses air pressure to separate the washing machine drum from the injection mold head 11.

[0033] Please refer to the appendix. Figure 3 The telescopic adjustment assembly 4 includes a telescopic cylinder 41, a transmission frame 42 is installed at the output end of the telescopic cylinder 41, a transmission disc 43 is installed on the transmission frame 42, and symmetrically arranged annular inserts 31 are fixedly connected to the transmission disc 43.

[0034] Furthermore, the injection mold head 11 includes a front template 111 and a hollow mold cylinder 112 in the middle. An air groove 113 is provided at the front end of the template 111. An installation chamber 15 is installed on the side end of the injection mold head 11. The telescopic cylinder 41 is fixed in the installation chamber 15. The transmission frame 42 and the transmission disc 43 are movably connected in the mold cylinder 112. The output rod of the telescopic cylinder 41 passes through the installation chamber 15 and the injection mold head 11 and extends into the mold cylinder 112 to connect with the transmission frame 42.

[0035] Specifically, the telescopic cylinder 41 is controlled to retract. The telescopic cylinder 41 drives the annular insert plate 31 to move away from the washing machine drum via the transmission frame 42 and the transmission disc 43. When the annular insert plate 31 moves to completely pass through the air outlet pipe 33, Example 2

[0036] Based on the above embodiment one, please refer to the appendix. Figure 6 , Figure 7 The movable mold 1 is equipped with a positioning plate 13 and an mounting plate 12 for connecting the hydraulic mobile device. The fixed mold 2 is equipped with a connecting plate 22 and a fixing plate 21 for fixing. The positioning plate 13 is equipped with a plurality of positioning pins 14. The connecting plate 22 is provided with a plurality of positioning holes 23 that are movably connected to the positioning pins 14 respectively.

[0037] In this embodiment, the mounting plate 12 is provided with holes for connecting external hydraulic equipment. The movable mold 1 is connected to the hydraulic equipment through the mounting plate 12 and kept parallel to the fixed mold 2. The hydraulic equipment drives the movable mold 1, and the fixed mold 2 is fixed to the external equipment through multiple holes at its tail for installation.

[0038] The working principle and usage process of this utility model are as follows: An external hydraulic device drives the injection mold head 11 on the movable mold 1 to move towards the fixed mold 2 via the mounting plate 12. After the injection mold head 11 inserts into the mold cavity of the fixed mold 2, hot-melt plastic is injected into the mold cavity. After the plastic cools and solidifies, the external hydraulic device drives the movable mold 1 to move and reset, causing the injection mold head 11, along with the molded washing machine drum, to leave the mold cavity. During the cooling and solidification process of the washing machine drum, the drum contracts tightly against the injection mold head 11 due to cooling. When demolding, the telescopic cylinder 41 is activated to control its retraction and extension. The cylinder 41 drives the annular insert plate 31 to move away from the washing machine drum via the transmission frame 42 and the transmission disc 43. When the annular insert plate 31 moves completely past the air outlet pipe 33, the telescopic cylinder 41 stops. At this time, hot air is injected into the air inlet pipe 34 through the external steam equipment. The hot air enters the air delivery pipe 32 through the air inlet pipe 34 and is finally ejected from the air outlet pipe 33. The ejected gas separates the washing machine drum from the injection mold head 11 through air pressure. The hot air also relieves the tightness of the washing machine drum during cooling and shaping. At this time, the washing machine drum can be easily removed, completing the rapid demolding of the washing machine drum.

Claims

1. A convenient demolding injection mold for a washing machine drum, comprising a fixed mold (2) and a movable mold (1), wherein the movable mold (1) is provided with a protruding injection mold head (11), the fixed mold (2) is provided with a mold cavity, and the injection mold head (11) cooperates with the mold cavity, characterized in that, It also includes an auxiliary demolding component (3) and a telescoping adjustment component (4), wherein: The auxiliary demolding assembly (3) includes a movable annular insert plate (31) and an air supply pipe (32), the air supply pipe (32) being equipped with multiple air outlet pipes (33) for air jet demolding. The injection mold head (11) has an air groove (113) at the front end, the annular insert plate (31) is movably connected to the air groove (113), and the air outlet pipe (33) is connected to the air groove (113); The telescopic adjustment component (4) is located on the side of the injection mold head (11) and is used to drive the annular insert plate (31) to extend and retract within the air groove (113).

2. The washing machine drum injection mold for easy demolding according to claim 1, characterized in that: The annular insert plate (31) is a symmetrically arranged semi-circular incomplete arc plate, the gas delivery pipe (32) has a circular path, and the gas outlet pipe (33) is arranged in an annular equidistant pattern along the inner wall of the gas delivery pipe (32) in the direction of the center of the circle formed by the gas delivery pipe (32).

3. The washing machine drum injection mold for easy demolding according to claim 2, characterized in that: The air outlet pipe (33) is embedded in the inner wall of the air groove (113) and the opening of the air outlet pipe (33) is flush with the inner wall of the air groove (113). The annular insert plate (31) cooperates with the air outlet pipe (33).

4. The washing machine drum injection mold for easy demolding according to claim 3, characterized in that: The gas supply pipe (32) is equipped with an air inlet pipe (34) that extends from the side end of the injection mold head (11) inside the injection mold head (11) for connecting to external equipment.

5. The washing machine drum injection mold for easy demolding according to claim 2, characterized in that: The telescopic adjustment assembly (4) includes a telescopic cylinder (41), a transmission frame (42) is installed at the output end of the telescopic cylinder (41), a transmission disc (43) is installed on the transmission frame (42), and a symmetrically arranged annular insert (31) is fixedly connected to the transmission disc (43).

6. The washing machine drum injection mold for easy demolding according to claim 5, characterized in that: The injection mold head (11) includes a front template (111) and a hollow mold cylinder (112) in the middle. An air groove (113) is provided at the front end of the template (111). An installation chamber (15) is installed on the side end of the injection mold head (11). The telescopic cylinder (41) is fixed in the installation chamber (15). The transmission frame (42) and the transmission disc (43) are movably connected in the mold cylinder (112). The output rod of the telescopic cylinder (41) passes through the installation chamber (15) and the injection mold head (11) and extends into the mold cylinder (112) to connect with the transmission frame (42).

7. The washing machine drum injection mold for easy demolding according to claim 1, characterized in that: The movable mold (1) is equipped with a positioning plate (13) and a mounting plate (12) for connecting the hydraulic mobile device. The fixed mold (2) is equipped with a connecting plate (22) and a fixing plate (21) for fixing. The positioning plate (13) is equipped with a plurality of positioning pins (14). The connecting plate (22) is provided with a plurality of positioning holes (23) that are movably connected to the positioning pins (14).

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