Injection molding machine for efficient injection molding of top cover plate of washing machine

Abstract

The utility model relates to the technical field of injection molding machines, and provides an injection molding machine for efficient injection molding of a top cover plate of a washing machine, which comprises a bottom plate and a U-shaped plate I fixedly connected to the top of the bottom plate. The controller controls the second electric telescopic rod to start and stretch, the first movable plate and the hollow ejector rod are pushed to move upwards, the top cover plate of the washing machine is loosened to a certain degree, then the controller controls the air pump to start, the air pump conveys air into the annular pipe, the air passes through the telescopic hose, the hollow ejector rod and the air hole in sequence, and the air is conveyed into the annular pipe. The top cover plate of the washing machine is loosened from the lower mold under the cooperation of the air pressure, so that the condition that the top cover plate of the washing machine is tightly attached to the lower mold and is difficult to demold can be avoided, the demolding time is shortened, and the demolding efficiency is improved. Therefore, the injection molding efficiency of the washing machine top cover plate is improved.

Description

An injection molding machine for high-efficiency injection molding of washing machine top covers. Technical Field

[0001] This utility model relates to the field of injection molding machine technology, and in particular to an injection molding machine for high-efficiency injection molding of washing machine top covers. Background Technology

[0002] The washing machine top cover is a cover located on top of the washing machine. Its main function is to seal the inside of the washing machine, preventing dust, water, and other impurities from entering, while also protecting the internal components. In addition, the top cover can also serve as a control interface, used to display the washing machine's status, select washing programs, etc. The washing machine top cover is injection molded using an injection molding machine.

[0003] In the existing technology, the washing machine top cover needs to be demolded after being injection molded by an injection molding machine. Currently, washing machine top covers usually require workers to demold them. Some washing machine top covers may be tightly attached to the injection mold, making demolding difficult and requiring a lot of time to demold, resulting in low efficiency of the injection molding of washing machine top covers. Summary of the Invention

[0004] The purpose of this invention is to solve the problem in the prior art that washing machine top covers need to be demolded after being injection molded by an injection molding machine. Currently, washing machine top covers usually require workers to demold them. Some washing machine top covers may be tightly attached to the injection mold, making demolding difficult and requiring a lot of time to demold, resulting in low efficiency in the injection molding of washing machine top covers.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: an injection molding machine for high-efficiency injection molding of a washing machine top cover, comprising: a base plate, and further comprising:

[0006] A U-shaped plate is fixedly connected to the top of the base plate. A lower mold is fixedly connected to the top of the U-shaped plate. Multiple hollow push rods are slidably connected to the top of the U-shaped plate, and each hollow push rod is slidably and sealed to the lower mold. A movable plate is fixedly connected to one end of each hollow push rod. An electric telescopic rod is fixedly connected to the top of the base plate and is fixedly connected to the movable plate. An air pump is fixedly connected to one side of the U-shaped plate. An annular tube is fixedly connected to the top of the base plate via a support rod. The annular tube is fixedly connected to the air outlet of the air pump. Multiple telescopic hoses are fixedly connected in a circumferential array on the outer surface of the annular tube. The telescopic hoses are fixedly connected to the hollow push rods. Multiple air holes are opened in a circumferential array on the outer surface of the hollow push rods near the top.

[0007] Preferably, a bracket is fixedly connected to the top of the base plate, an electric telescopic rod is fixedly connected to the top of the bracket, an upper mold is fixedly connected to one end of the electric telescopic rod, and an injection pipe is fixedly connected to one side of the lower mold, the injection pipe being connected to the interior of the lower mold.

[0008] Preferably, all of the aforementioned telescopic hoses are connected to an annular pipe, and the telescopic hoses are connected to a hollow top rod.

[0009] Preferably, a second U-shaped plate is fixedly connected to the top of the base plate, and two movable rods are symmetrically slidably connected to the top of the second U-shaped plate, with a frame fixedly connected to one end of each movable rod.

[0010] Preferably, a rotating rod is rotatably connected to the top of the frame, a connecting plate is fixedly connected to one end of the rotating rod, a plurality of suction cups are fixedly connected to the bottom of the connecting plate, a motor is fixedly connected to the bottom of the inner wall of the frame, and the output end of the motor is fixedly connected to the other end of the rotating rod.

[0011] Preferably, an electric telescopic rod three is fixedly connected to the top of the base plate, and a movable plate two is fixedly connected to one end of the electric telescopic rod three. The movable plate two is fixedly connected to two movable rods.

[0012] Preferably, a collection frame is fixedly connected to the top of the base plate.

[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0014] 1. This utility model uses a controller to activate an electric telescopic rod 2, causing it to extend and push the movable plate 1 and the hollow ejector rod upwards. The hollow ejector rod then pushes the washing machine top cover, which is being injection molded inside the lower mold, loosening the top cover to a certain extent. This allows the air hole of the hollow ejector rod to enter the lower mold. The controller then activates an air pump, which supplies gas into the annular tube. The gas passes sequentially through the telescopic hose, the hollow ejector rod, and the air hole into the lower mold, increasing the air pressure between the telescopic hose and the washing machine top cover. This increased air pressure loosens the washing machine top cover from the lower mold, preventing it from being tightly fitted and difficult to demold. This reduces demolding time and improves the efficiency of the washing machine top cover injection molding.

[0015] 2. This utility model uses a controller to start the motor, causing its output shaft to drive the rotating rod to rotate, simultaneously rotating the connecting plate and suction cup 180 degrees and moving them directly above the lower mold. Then, the controller controls the electric telescopic rod three to retract, causing the movable plate two, movable rod, frame, and connecting plate to move downwards, so that the suction cup contacts and presses against the washing machine top cover, holding the washing machine top cover in place. The controller then controls the electric telescopic rod three to extend, causing the connecting plate and suction cup to move upwards a suitable distance, removing the washing machine top cover from the lower mold. Finally, the controller controls the motor to rotate in the opposite direction, which resets the connecting plate and moves the washing machine top cover directly above the collection frame. At this point, the collection frame can be removed and placed inside. This eliminates the need for workers to remove the washing machine top cover from the lower mold, thus improving the safety of the injection molding machine. Attached Figure Description

[0016] Figure 1 is a structural schematic diagram of an injection molding machine for a high-efficiency injection molding machine top cover provided by this utility model;

[0017] Figure 2 is a side view of the injection molding machine structure of a high-efficiency injection molding washing machine top cover provided by this utility model;

[0018] Figure 3 is a schematic diagram of the hollow push rod structure of an injection molding machine for a high-efficiency injection molding washing machine top cover provided by this utility model;

[0019] Figure 4 is a cross-sectional structural diagram of an injection molding machine for a high-efficiency injection molding machine top cover provided by this utility model.

[0020] Legend:

[0021] 1. Base plate; 101. Support; 102. Electric telescopic rod one; 103. Upper mold; 104. U-shaped plate one; 105. Lower mold; 106. Injection pipe; 2. Electric telescopic rod two; 201. Movable plate one; 202. Hollow top rod; 203. Air pump; 204. Ring pipe; 205. Telescopic hose; 206. Air hole; 3. Collection frame; 4. U-shaped plate two; 401. Movable rod; 402. Frame; 403. Rotating rod; 404. Connecting plate; 405. Suction cup; 406. Electric telescopic rod three; 407. Movable plate two; 408. Motor. Detailed Implementation

[0022] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0023] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0024] As shown in Figures 1-4, this utility model provides an injection molding machine for high-efficiency injection molding of a washing machine top cover, including: a base plate 1, and a U-shaped plate 104 fixedly connected to the top of the base plate 1. A lower mold 105 is fixedly connected to the top of the U-shaped plate 104, and a plurality of hollow ejector rods 202 are slidably connected to the top of the U-shaped plate 104. The plurality of hollow ejector rods 202 are all slidably and sealingly connected to the lower mold 105. One end of the plurality of hollow ejector rods 202 is fixedly connected to a movable plate 201. The top of the base plate 1 is fixedly connected to... An electric telescopic rod 2 is connected to the movable plate 201. An air pump 203 is fixedly connected to one side of the U-shaped plate 104. An annular pipe 204 is fixedly connected to the top of the base plate 1 via a support rod. The annular pipe 204 is fixedly connected to the air outlet of the air pump 203. Multiple telescopic hoses 205 are fixedly connected in a circular array on the outer surface of the annular pipe 204. The telescopic hoses 205 are fixedly connected to the hollow top rod 202. Multiple air holes 206 are opened in a circular array on the outer surface of the hollow top rod 202 near the top.

[0025] Furthermore, as shown in Figures 1-4, a bracket 101 is fixedly connected to the top of the base plate 1, and an electric telescopic rod 102 is fixedly connected to the top of the bracket 101. One end of the electric telescopic rod 102 is fixedly connected to the upper mold 103, and an injection pipe 106 is fixedly connected to one side of the lower mold 105. The injection pipe 106 is connected to the interior of the lower mold 105. The electric telescopic rod 102 is started by the controller to extend, which drives the upper mold 103 to move downward and merge with the lower mold 105. Molten plastic is then conveyed between the lower mold 105 and the upper mold 103 through the injection pipe 106 and cooled to form the washing machine top cover.

[0026] Furthermore, as shown in Figures 1-4, multiple telescopic hoses 205 are connected to the annular tube 204, and the telescopic hoses 205 are connected to the hollow push rod 202. Through the above arrangement, the gas inside the annular tube 204 can enter the interior of the hollow push rod 202 through the telescopic hoses 205. With the telescopic hoses 205, when the movable plate 201 and the hollow push rod 202 move upward, they can be stretched to an appropriate degree.

[0027] Furthermore, as shown in Figures 1-4, a U-shaped plate 4 is fixedly connected to the top of the base plate 1. Two movable rods 401 are symmetrically slidably connected to the top of the U-shaped plate 4. A frame 402 is fixedly connected to one end of each movable rod 401. With the above arrangement, the movable rods 401 and the frame 402 can move up and down.

[0028] Furthermore, as shown in Figures 1-4, a rotating rod 403 is rotatably connected to the top of the frame 402. A connecting plate 404 is fixedly connected to one end of the rotating rod 403. Multiple suction cups 405 are fixedly connected to the bottom of the connecting plate 404. A motor 408 is fixedly connected to the bottom of the inner wall of the frame 402. The output end of the motor 408 is fixedly connected to the other end of the rotating rod 403. The motor 408 is started by controlling the controller, so that its output shaft drives the rotating rod 403 to rotate, and synchronously drives the connecting plate 404 and the suction cups 405 to rotate 180 degrees and move to directly above the lower mold 105.

[0029] Furthermore, as shown in Figures 1-4, an electric telescopic rod 406 is fixedly connected to the top of the base plate 1. A movable plate 407 is fixedly connected to one end of the electric telescopic rod 406. The movable plate 407 is fixedly connected to two movable rods 401. The electric telescopic rod 406 can be extended or retracted by controlling the controller, which can drive the movable plate 407 and the movable rods 401 to move up or down.

[0030] Furthermore, as shown in Figures 1-4, a collection frame 3 is fixedly connected to the top of the base plate 1. The collection frame 3 facilitates the collection of the washing machine top cover.

[0031] Working principle: In use, the controller activates the electric telescopic rod 102, causing it to extend and move the upper mold 103 downwards, merging it with the lower mold 105. Molten plastic is then supplied between the lower mold 105 and the upper mold 103 through the injection pipe 106. After cooling, it forms the washing machine top cover. The controller then retracts the electric telescopic rod 102, causing it to move the upper mold 103 upwards, separating it from the lower mold 105. Finally, the controller activates the electric telescopic rod 2, causing it to extend and push the movable plate 201 and the hollow ejector rod 202 upwards. The hollow ejector rod 202 pushes the washing machine top cover plate, which is injection molded inside the lower mold 105, causing the washing machine top cover plate to loosen to a certain extent. This allows the air hole 206 of the hollow ejector rod 202 to enter the lower mold 105. Then, the controller starts the air pump 203, which delivers gas into the annular pipe 204. The gas passes through the telescopic hose 205, the hollow ejector rod 202, and the air hole 206 in sequence before entering the lower mold 105. This increases the air pressure between the telescopic hose 205 and the washing machine top cover plate. Under the combined effect of air pressure, the washing machine top cover plate loosens from the lower mold 105. This design avoids the washing machine top cover from being tightly fitted to the lower mold 105, which could lead to difficulty in demolding and thus reduce demolding time, thereby improving the efficiency of the washing machine top cover injection molding. The controller then starts the motor 408, causing its output shaft to drive the rotating rod 403 to rotate, simultaneously rotating the connecting plate 404 and suction cup 405 180 degrees, moving them directly above the lower mold 105. The controller then starts the electric telescopic rod 406, causing it to retract and move the movable plate 407, movable rod 401, frame 402, and connecting plate 404 downwards, allowing the suction cup 405 to contact the washing machine... The top cover plate contacts and is pressed, and the suction cup 405 holds the washing machine top cover plate. Then, the controller controls the electric telescopic rod 406 to extend, so that the connecting plate 404 and the suction cup 405 move upward a suitable distance, and the washing machine top cover plate is removed from the inside of the lower mold 105. Then, the controller controls the motor 408 to rotate in the opposite direction, so that the connecting plate 404 can be reset, and the washing machine top cover plate can be moved directly above the collection frame 3. At this time, the collection frame 3 can be removed and placed into the collection frame 3. This eliminates the need for the operator to remove the washing machine top cover plate from the lower mold 105, thereby improving the safety of the injection molding machine.

[0032] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. An injection molding machine for high-efficiency injection molding of a washing machine top cover, comprising: The base plate (1) is characterized in that it further includes: a U-shaped plate (104) fixedly connected to the top of the base plate (1), a lower mold (105) fixedly connected to the top of the U-shaped plate (104), a plurality of hollow push rods (202) slidably connected to the top of the U-shaped plate (104), the plurality of hollow push rods (202) being sealed and slidably connected to the lower mold (105), a movable plate (201) fixedly connected to one end of the plurality of hollow push rods (202), and an electric telescopic rod (2) fixedly connected to the top of the base plate (1). The U-shaped plate (104) is fixedly connected to the movable plate (201). An air pump (203) is fixedly connected to one side of the U-shaped plate (104). An annular pipe (204) is fixedly connected to the top of the base plate (1) by a support rod. The annular pipe (204) is fixedly connected to the air outlet of the air pump (203). Multiple telescopic hoses (205) are fixedly connected to the outer surface of the annular pipe (204) in a circumferential array. The telescopic hoses (205) are fixedly connected to the hollow top rod (202). Multiple air holes (206) are opened in a circumferential array on the outer surface of the hollow top rod (202) near the top.

2. The injection molding machine for high-efficiency injection molding of a washing machine top cover according to claim 1, characterized in that: A bracket (101) is fixedly connected to the top of the base plate (1), and an electric telescopic rod (102) is fixedly connected to the top of the bracket (101). An upper mold (103) is fixedly connected to one end of the electric telescopic rod (102), and an injection pipe (106) is fixedly connected to one side of the lower mold (105). The injection pipe (106) is connected to the interior of the lower mold (105).

3. The injection molding machine for high-efficiency injection molding of a washing machine top cover according to claim 1, characterized in that: Multiple telescopic hoses (205) are connected to an annular pipe (204), and the telescopic hoses (205) are connected to a hollow top rod (202).

4. The injection molding machine for high-efficiency injection molding of a washing machine top cover according to claim 2, characterized in that: The top of the base plate (1) is fixedly connected to a U-shaped plate (4), and the top of the U-shaped plate (4) is symmetrically slidably connected to two movable rods (401), and one end of the two movable rods (401) is fixedly connected to a frame (402).

5. The injection molding machine for high-efficiency injection molding of a washing machine top cover according to claim 4, characterized in that: A rotating rod (403) is rotatably connected to the top of the frame (402). A connecting plate (404) is fixedly connected to one end of the rotating rod (403). Multiple suction cups (405) are fixedly connected to the bottom of the connecting plate (404). A motor (408) is fixedly connected to the bottom of the inner wall of the frame (402). The output end of the motor (408) is fixedly connected to the other end of the rotating rod (403).

6. The injection molding machine for high-efficiency injection molding of a washing machine top cover according to claim 4, characterized in that: An electric telescopic rod three (406) is fixedly connected to the top of the base plate (1), and a movable plate two (407) is fixedly connected to one end of the electric telescopic rod three (406). The movable plate two (407) is fixedly connected to two movable rods (401).

7. The injection molding machine for high-efficiency injection molding of a washing machine top cover according to claim 6, characterized in that: A collection frame (3) is fixedly connected to the top of the base plate (1).

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