Washing machine observation window mold

Abstract

The utility model relates to a washing machine observation window mould which comprises an upper mould and a lower mould, a gas exhaust device is arranged in a through hole of the upper mould, the gas exhaust device comprises a valve body, a guide pipe, a limiting part and a spring, the valve body is provided with a rod piece, one end of the rod piece is provided with a conical part, and the conical part is arranged corresponding to a horn mouth of the through hole. The rod piece penetrates through the guide pipe and the limiting part and then is limited through the protruding parts, the spring is arranged on the rod piece in a sleeving mode and located in the guide pipe, one end of the spring abuts against the annular part of the rod piece, the other end of the spring abuts against the limiting part, arc-shaped protruding parts are arranged on the peripheral side of the limiting part and abut against the inner wall of the through hole, and the arc-shaped protruding parts are arranged at intervals. And an air guide channel is arranged between the adjacent arc-shaped convex parts. According to the washing machine observation window mold, gas can be rapidly exhausted when an observation window is formed, a gas exhaust device can be conveniently installed, and the service life of a spring is prolonged; in addition, the through hole can be closed after exhausting, and the forming quality is prevented from being affected by material overflow.

Description

Technical Field

[0001] The utility model relates to the technical field of washing machine observation window processing, in particular to a washing machine observation window mould. Background Art

[0002] The observation window of the washing machine is a window set on the washing machine and convenient for the user to observe the operating status of the inside of the washing machine at any time. It is usually processed by a mold. When the mold is being formed, the gas in the mold needs to be discharged. Usually, a gas discharge mechanism is used. For example, the patent with the announcement number CN220883228U discloses a gas discharge structure of a multi-color injection mold. When in use, when the upper mold is being injected, the gas is discharged. At this time, the air pressure on the air pressure plate continues to increase. At this time, the pores are exposed, and the air is discharged through the pores. However, since the pores are connected to the molding cavity in the mold, it is easy for the material in the molding cavity to be discharged through the pores, affecting the molding quality. In addition, the spring is in contact with the discharged gas, which can easily cause the spring to rust and be damaged, affecting the service life and stability of the spring. Utility Model Content

[0003] In order to solve the problems of the prior art, the utility model provides a washing machine observation window mold which can automatically open and close a through hole, facilitate exhaust and avoid material overflow.

[0004] The specific technical scheme is as follows: A washing machine observation window mold, comprising an upper mold and a lower mold, a gas exhaust device is provided in the through hole of the upper mold, the gas exhaust device comprises a valve body, a conduit, a limiting portion and a spring, the valve body has a rod, one end of the rod is provided with a tapered portion, the tapered portion is arranged corresponding to the bell mouth of the through hole, the rod is limited by the convex portion after passing through the conduit and the limiting portion, the spring is sleeved on the rod and located in the conduit, one end of the spring abuts against the annular portion of the rod, and the other end abuts against the limiting portion, the circumferential side of the limiting portion has an arc-shaped convex portion, the arc-shaped convex portion abuts against the inner wall of the through hole, a plurality of arc-shaped convex portions are arranged at intervals, and an air guide channel is provided between adjacent arc-shaped convex portions.

[0005] In some embodiments, the outer diameter of the conduit is smaller than the inner diameter of the through hole, a fluid channel is formed between the conduit and the through hole, and the flow channel is connected to the gas guide channel.

[0006] In some embodiments, there are planar portions between the arc-shaped protrusions.

[0007] In some embodiments, the diameter of the annular portion is larger than the diameter of the rod and smaller than the diameter of the conical portion, the annular portion is located above the conical portion, and one end of the conduit is against the top surface of the conical portion.

[0008] In some embodiments, an extension portion is provided at the bottom of the limiting portion, a limiting surface is formed between the extension portion and the bottom surface of the limiting portion, and the conduit presses against the limiting surface.

[0009] In some embodiments, the limiting surface is provided with an elastic pad. When the catheter presses against the elastic pad, the elastic pad expands and closes the air guiding channel. When the catheter leaves the elastic pad, the elastic pad contracts and the air guiding channel opens.

[0010] In some embodiments, the rod, the conduit and the through hole are coaxially arranged, and the conduit is a hollow cylinder.

[0011] In some embodiments, there are three arc-shaped protrusions, and the three arc-shaped protrusions are arranged at equal intervals.

[0012] In some embodiments, the outer wall of the conical portion fits with the inner wall of the bell mouth, and when the gas exhaust device closes the through hole, the bottom surface of the conical portion is flush with the inner wall of the upper mold.

[0013] Technical effect of the utility model: A washing machine observation window mold of the utility model can quickly discharge gas when the observation window is formed, which is convenient for the installation of the gas discharge device and prolongs the service life of the spring; in addition, the through hole can be closed after exhausting to prevent material overflow from affecting the molding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of a washing machine observation window mold according to an embodiment of the utility model.

[0015] Figure 2 Schematic diagram of a gas exhaust device according to an embodiment of the present invention.

[0016] Figure 3 It is a cross-sectional view of a gas exhaust device according to an embodiment of the present utility model.

[0017] Figure 4 This utility model Figure 3 Enlarged view of part A.

[0018] Figure 5 It is a cross-sectional view of the limiting portion of an embodiment of the utility model. DETAILED DESCRIPTION

[0019] 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.

[0020] like Figures 1 to 5As shown, a mold for a washing machine observation window in this embodiment includes an upper mold 1 and a lower mold 2. A gas exhaust device 3 is provided in the through hole 11 of the upper mold 1. The gas exhaust device 3 is used to exhaust the gas in the product molding process from the mold cavity. In this embodiment, multiple through holes 11 are provided, which are located at different positions and angles, so that the gas can be quickly discharged from different directions. The gas exhaust device 3 includes a valve body 4, a conduit 5, a limiter 6 and a spring 7. The valve body 4 has a rod 41. One end of the rod 41 is provided with a tapered portion 42. The tapered portion 42 is arranged corresponding to the bell mouth 111 of the through hole 11. After the rod 41 passes through the conduit 5 and the limiter 6, it is limited by a convex portion 43. The convex portion 43 is formed on the rod 41. After the rod 41 is inserted, the rod 41 is clamped by a tool to deform it to form the convex portion 43 to prevent the limiter 6 from falling out. The spring 7 is sleeved on the rod 41 and is located in the conduit 5. One end of the spring 7 abuts against the annular portion 411 of the rod 41, and the other end abuts against the limiting portion 6. The circumferential side of the limiting portion 6 has an arc-shaped convex portion 61, which abuts against the inner wall of the through hole 11. Several arc-shaped convex portions 61 are arranged at intervals, and a gas guide channel 8 is provided between adjacent arc-shaped convex portions 61. In the above technical solution, the gas discharge device is assembled and inserted into the through hole. In the initial state, the material has not entered the mold yet. The spring 7 of the gas discharge device 3 pushes the valve body 4 open, so that its conical portion 42 is separated from the bell mouth 111, and the through hole 11 is opened. When the material enters the mold, the material squeezes the gas out of the through hole 11 until the material contacts the conical portion 42, pushes the valve body 4 to move toward the bell mouth 111, closes the bell mouth 111, and the through hole 11 is closed. By providing the conduit 5, the spring 7 can be protected, the contact between impurities and the spring can be reduced, and the service life of the spring can be extended. By providing an arc-shaped convex portion 61 on the limiting portion 6, it can be easily inserted into the through hole and can be pressed against the inner wall of the through hole for positioning; at the same time, an air guide channel 8 can be formed between the inner wall of the through hole to facilitate exhaust. Through the above technical solution, the gas can be quickly exhausted when the observation window is formed, which facilitates the installation of the gas exhaust device and prolongs the service life of the spring.

[0021] In this embodiment, the outer diameter of the conduit 5 is smaller than the inner diameter of the through hole 11, and a fluid channel 12 is formed between the conduit 5 and the through hole 11. The flow channel 12 is connected with the air guide channel 8, so that the gas enters the flow channel 12 through the bell mouth 111 and is discharged through the air guide channel 8. There is a plane portion 62 between the arc-shaped convex portions 61, and the air guide channel 8 is formed between the plane portion 62 and the inner wall of the through hole. The diameter of the annular portion 8 is larger than the diameter of the rod 41 and smaller than the diameter of the conical portion 42. The annular portion 8 is located above the conical portion 42, and one end of the conduit 5 is against the top surface of the conical portion 42. Thus, the end of the rod 41 is stepped, which facilitates the positioning of the spring and the conduit 5. An extension portion 64 is provided at the bottom of the limiting portion 6, and a limiting surface 63 is formed between the extension portion 64 and the bottom surface of the limiting portion 6. The conduit 5 presses against the limiting surface 63 to limit the conduit 5 from above. The limiting surface 63 is provided with an elastic pad 9. When the conduit presses against the elastic pad 9, the elastic pad 9 expands and closes the air guide channel 8. When the conduit 5 leaves the elastic pad 9, the elastic pad 9 contracts and the air guide channel 8 opens. Through the above technical solution, the air guide channel 8 can be closed when the conduit 5 goes up, so as to prevent external gas from entering the mold cavity through the air guide channel 8. The elastic pad 9 can be made of a ductile material such as rubber. The rod 41, the conduit 5 and the through hole 11 are coaxially arranged, and the conduit 5 is a hollow cylinder, so as to facilitate the installation of the spring 7. There are three arc-shaped convex portions 61, and the three arc-shaped convex portions 61 are arranged at equal intervals, so that the positioning of the limiting portion 6 can be more stable. The outer wall of the conical portion 42 fits with the inner wall of the bell mouth 111. When the gas discharge device 3 closes the through hole 11, the bottom surface of the conical portion 42 is flush with the inner wall of the upper mold 1, so that after the conical portion 42 closes the through hole 11, it will not affect the molding of the observation window.

[0022] A washing machine observation window mold of the present embodiment can quickly exhaust gas when the observation window is formed, facilitate the installation of the gas exhaust device, and extend the service life of the spring; in addition, the through hole can be closed after exhausting to prevent material overflow from affecting the molding quality.

[0023] 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. A washing machine observation window mold, comprising an upper mold and a lower mold, wherein a gas exhaust device is provided in a through hole of the upper mold, characterized in that: The gas exhaust device includes a valve body, a conduit, a limiting portion and a spring. The valve body has a rod. One end of the rod is provided with a tapered portion, which is arranged corresponding to the bell mouth of the through hole. After the rod passes through the conduit and the limiting portion, it is limited by the convex portion. The spring is sleeved on the rod and located in the conduit. One end of the spring abuts against the annular portion of the rod, and the other end abuts against the limiting portion. The circumferential side of the limiting portion has an arc-shaped convex portion, which abuts against the inner wall of the through hole. A plurality of arc-shaped convex portions are arranged at intervals, and a gas guide channel is provided between adjacent arc-shaped convex portions.

2. The washing machine observation window mold according to claim 1, characterized in that: The outer diameter of the conduit is smaller than the inner diameter of the through hole, a fluid channel is formed between the conduit and the through hole, and the flow channel is connected with the air guide channel.

3. The washing machine observation window mold according to claim 2, characterized in that: There is a flat surface portion between the arc-shaped convex portions.

4. The washing machine observation window mold according to claim 1, characterized in that: The diameter of the annular portion is greater than the diameter of the rod and smaller than the diameter of the conical portion. The annular portion is located above the conical portion, and one end of the conduit resists the top surface of the conical portion.

5. The washing machine observation window mold according to claim 1, characterized in that: An extension portion is provided at the bottom of the limiting portion, a limiting surface is formed between the extension portion and the bottom surface of the limiting portion, and the conduit presses against the limiting surface.

6. The washing machine observation window mold according to claim 5, characterized in that: The limiting surface is provided with an elastic pad. When the catheter presses against the elastic pad, the elastic pad expands and closes the air guide channel. When the catheter leaves the elastic pad, the elastic pad contracts and the air guide channel opens.

7. The washing machine observation window mold according to claim 1, characterized in that: The rod, the conduit and the through hole are coaxially arranged, and the conduit is a hollow cylinder.

8. The washing machine observation window mold according to claim 1, characterized in that: There are three arc-shaped convex parts, and the three arc-shaped convex parts are arranged at equal intervals.

9. The washing machine observation window mold according to claim 1, characterized in that: The outer wall of the tapered portion is fitted with the inner wall of the bell mouth, and when the gas exhaust device closes the through hole, the bottom surface of the tapered portion is flush with the inner wall of the upper mold.

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