Injection mold for water storage tank shell of washing machine

Abstract

A material channel is communicated with a forming cavity, a material pushing assembly is arranged below the forming cavity and comprises a material pushing channel, a material pushing rod and a pushing plate, the material pushing channel is located below the forming cavity and communicated with the forming cavity, the material pushing rod is located in the material pushing channel, one end of the material pushing rod is connected with the pushing plate, and the other end of the material pushing rod is connected with the pushing plate. A connecting channel is arranged between the forming cavity and the material channel, an inlet of the connecting channel is communicated with the material channel, an outlet of the connecting channel is communicated with the material pushing channel and located below the forming cavity, the position of the outlet is lower than the position of the inlet, the connecting channel is arranged in an inclined mode, and the material pushing rod is arranged in the connecting channel. The material pushing rod opens or closes the inlet, a demolding assembly is arranged below the forming cavity and comprises a driving plate, and the driving plate is located above the pushing plate. Defects such as burrs on the periphery of a demoulded product can be avoided, follow-up treatment is not needed, and machining efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to an injection mold for a washing machine water tank shell. Background Art

[0002] The water tank shell of the washing machine is processed by an injection mold. During injection molding, the completely molten plastic material is stirred by a screw at a certain temperature, and then injected into the mold cavity with high pressure. After cooling and solidification, a molded product is obtained. When the molded product is demolded, the adhesion of the material after cooling may cause defects on the product surface, which usually requires additional processes for processing. There are also solutions in the prior art that are processed by improving the mold. For example, the patent with announcement number CN212171139U discloses a mold that automatically removes defects in the feed port. By setting an automatic removal device, when the upper and lower molds of the equipment are separated during normal operation, the upper mold can drive the connecting steel cable to move upward, then drive the transmission wheel to rotate, and then drive the cutting knife to move downward to cut the material. However, the above technical solution requires a set of transmission mechanisms to be set in the mold, the structure is relatively complex, and the accuracy of the cutting knife is difficult to control through the steel cable. Utility Model Content

[0003] In order to solve the problems of the prior art, the utility model provides an injection mold for a washing machine water tank shell which can avoid defects on the product surface and has a simple transmission structure and is easy to control.

[0004] The specific technical scheme is as follows: A washing machine water tank shell injection mold, including a molding cavity and a material channel, the material channel is connected with the molding cavity, a pushing assembly is provided below the molding cavity, the pushing assembly includes a pushing channel, a pushing rod and a pushing plate, the pushing channel is located below the molding cavity and is connected with the molding cavity, the pushing rod is located in the pushing channel, one end of the pushing rod is connected with the pushing plate, and the other end is a free end, the pushing plate drives the pushing rod to move in the pushing channel, a connecting channel is provided between the molding cavity and the material channel, the inlet of the connecting channel is connected with the material channel, the outlet of the connecting channel is connected with the pushing channel and is located below the molding cavity, the outlet position is lower than the inlet position, the connecting channel is inclined, the pushing rod opens or closes the inlet, a demolding assembly is provided below the molding cavity, the demolding assembly includes a driving plate, and the driving plate is located above the pushing plate.

[0005] In some embodiments, the demolding assembly includes a push rod, which is disposed in a longitudinal channel of the mold and connected to a driving plate. The longitudinal channel is communicated with the molding cavity, and the push rod is disposed correspondingly to the molding cavity.

[0006] In some embodiments, the ejector rod is arranged in parallel with the push rod.

[0007] In some embodiments, there are multiple push rods, and the multiple push rods are arranged in parallel.

[0008] In some embodiments, a through hole and a screw hole are provided in the mold, the through hole is connected to the screw hole, a bolt is provided in the through hole, the bolt is threadedly connected to the screw hole, the screw hole is located above the driving plate, and a support plate is provided above the through hole.

[0009] In some embodiments, the push rod includes a lower rod portion and an upper rod portion, and the diameter of the upper rod portion is smaller than that of the lower rod portion.

[0010] In some embodiments, a heating rod is provided in the upper rod portion.

[0011] In some embodiments, the inner diameter of the connecting channel decreases from the inlet to the outlet.

[0012] Technical effect of the utility model: The injection mold of the washing machine water tank shell of the utility model can avoid defects such as burrs around the product after demolding, and no subsequent treatment is required, thereby improving processing efficiency; in addition, it can facilitate the molding of different structures of the product by controlling the stroke of the push rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of an injection mold for a washing machine water tank housing according to an embodiment of the utility model.

[0014] Figure 2 It is a schematic diagram of the push rod in the initial position during the mold forming of the embodiment of the utility model.

[0015] Figure 3 It is a schematic diagram of the push rod after it moves upward during the mold forming of the embodiment of the utility model.

[0016] Figure 4 It is a schematic diagram of the push rod of the embodiment of the utility model when forming the extension part. DETAILED DESCRIPTION

[0017] The essential features and advantages of the present invention are further described below in conjunction with examples, but the present invention is not limited to the examples listed.

[0018] like Figures 1 to 4As shown, an injection mold for a washing machine water storage tank shell of this embodiment includes a molding cavity 1 and a material channel 2. The material channel 2 is connected to the molding cavity 1. The molten material in the material channel 2 flows into the molding cavity 1 to form a product water storage tank shell. A push assembly 3 is provided below the molding cavity 1. The push assembly 3 includes a push channel 31, a push rod 32 and a push plate 33. The push channel 31 is located below the molding cavity 1 and is connected to the molding cavity 1. The push rod 32 is located in the push channel 31. One end of the push rod 32 is connected to the push plate 33, and the other end is a free end. The push plate 33 drives the push rod 32 to move in the push channel 31. A connecting channel 4 is provided between the molding cavity 1 and the material channel 2. The inlet 41 of the connecting channel 4 is connected to the material channel 2. The outlet 42 of the connecting channel 4 is connected to the push channel 31 and is located below the molding cavity 1. The position of the outlet 42 is lower than the position of the inlet 41. The connecting channel 4 is inclined, so that the material in the material channel 2 can enter the push channel 31 through the connecting channel 4, and then enter the molding cavity 1. The push rod 32 opens or closes the inlet 41. A demolding assembly 5 is provided below the molding cavity 1. The demolding assembly 5 includes a driving plate 51. The driving plate 51 is located above the push plate 33. In the above technical solution, the material enters the molding cavity 1 through the material channel 2. When the molding cavity 1 is not fully filled and there is still a gap M, the material feeding is stopped. The push plate 33 moves upward to drive the push rod 32 to move flush with the bottom of the molding cavity, and the material above the push rod 32 is pushed into the molding cavity 1 to fill the gap M. At the same time, the push rod 32 closes the entrance of the connecting channel 4; when the material is cooled, the molded product 10 is pushed out by the demolding assembly. Through the above technical solution, it is possible to avoid burrs and other defects around the product after demolding, without the need for subsequent treatment, thereby improving processing efficiency.

[0019] In this embodiment, the demoulding assembly 5 includes a push rod 52, which is arranged in the longitudinal channel 53 of the mold and connected to the driving plate 51. The longitudinal channel 53 is connected to the molding cavity 1, and the push rod 52 is arranged corresponding to the molding cavity 1. Therefore, the push rod 52 can be driven upward by the driving plate 51 to lift the product in the molding cavity 1 and demould. The push rod 52 is arranged in parallel with the push rod 32, so that mold processing can be facilitated. There are multiple push rods 52, and multiple push rods 52 are arranged in parallel, so that the multiple push rods 52 can be driven upward by the driving plate 51, so that the product demoulding is smoother.

[0020] In this embodiment, a through hole 6 and a screw hole 7 are provided in the mold, the through hole 6 is connected with the screw hole 7, a bolt 8 is provided in the through hole 6, the bolt 8 is threadedly connected with the screw hole 7, the screw hole 7 is located above the driving plate 51, and a support plate 8 is provided above the through hole 6. By screwing the bolt 8, the driving distance between the support plate 8 and the driving plate 51 can be adjusted, thereby adjusting the stroke of the push rod 32. When the push rod 32 moves upward, it can move to block the entrance 41 and be located below the molding cavity. A distance L is formed between the bottom of the molding cavity and the upper end of the push rod 32, so that the lower end of the molded product has an extension. The push rod 32 includes a lower rod portion 321 and an upper rod portion 322. The diameter of the upper rod portion 322 is smaller than that of the lower rod portion 321, so that the push rod structure is more stable. A heating rod 323 is provided in the upper rod portion 322. The heat generated by the heating rod 323 can keep the material in a molten state, which is convenient for the movement of the material. The inner diameter of the connecting channel 4 decreases from the entrance 41 to the outlet 42.

[0021] An injection mold for a washing machine water tank shell in the present embodiment can avoid defects such as burrs around the product after demolding, and no subsequent processing is required, thereby improving processing efficiency; in addition, the stroke of the push rod can be controlled to facilitate the molding of different product structures.

[0022] It should be pointed out that the above preferred embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. An injection mold for a washing machine water tank housing, comprising a molding cavity and a material channel, wherein the material channel is connected to the molding cavity, and characterized in that: A pushing assembly is provided below the molding cavity, and the pushing assembly includes a pushing channel, a pushing rod and a pushing plate. The pushing channel is located below the molding cavity and is connected with the molding cavity, the pushing rod is located in the pushing channel, one end of the pushing rod is connected with the pushing plate, and the other end is a free end, and the pushing plate drives the pushing rod to move in the pushing channel, and a connecting channel is provided between the molding cavity and the material channel, the inlet of the connecting channel is connected with the material channel, the outlet of the connecting channel is connected with the pushing channel and is located below the molding cavity, the outlet position is lower than the inlet position, the connecting channel is inclined, and the pushing rod opens or closes the inlet, and a demolding assembly is provided below the molding cavity, and the demolding assembly includes a driving plate, and the driving plate is located above the pushing plate.

2. The injection mold for the washing machine water tank housing according to claim 1, characterized in that: The demoulding assembly includes a push rod, which is arranged in the longitudinal channel of the mold and connected to the driving plate. The longitudinal channel is communicated with the molding cavity, and the push rod is correspondingly arranged with the molding cavity.

3. The injection mold for the washing machine water tank housing according to claim 2, characterized in that: The ejector rod is arranged in parallel with the push rod.

4. The injection mold for the washing machine water tank housing according to claim 2, characterized in that: There are multiple push rods, and the multiple push rods are arranged in parallel.

5. The injection mold for the washing machine water tank housing according to claim 1, characterized in that: A through hole and a screw hole are arranged in the mold, the through hole is connected with the screw hole, a bolt is arranged in the through hole, the bolt is threadedly connected with the screw hole, the screw hole is located above the driving plate, and a support plate is arranged above the through hole.

6. The injection mold for the washing machine water tank housing according to claim 1, characterized in that: The push rod comprises a lower rod portion and an upper rod portion, and the diameter of the upper rod portion is smaller than that of the lower rod portion.

7. The injection mold for the water tank housing of the washing machine according to claim 6, characterized in that: A heating rod is arranged inside the upper rod part.

8. The injection mold for the washing machine water tank housing according to claim 1, characterized in that: The inner diameter of the connecting channel decreases from the inlet to the outlet.

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