Demoulding device used after plastic bucket production

By introducing a demolding mechanism into the production of plastic buckets, and using electric push rods and hydraulic rods in conjunction with suction cups to achieve automated demolding, the problems of worker burn risk and slow demolding speed have been solved, and a fast and safe demolding process has been achieved.

CN224145158UActive Publication Date: 2026-04-21YANBIAN TONGDA IND CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
YANBIAN TONGDA IND CO LTD
Filing Date
2025-05-27
Publication Date
2026-04-21

AI Technical Summary

Technical Problem

There is a risk of workers being burned during the demolding process of existing plastic buckets, and the demolding speed is relatively slow.

Method used

The demolding mechanism includes an electric push rod, an air pump, a hydraulic rod, and a suction cup. Through automated operation, the plastic bucket is quickly demolded. After the suction cup is used to adhere to the bottom of the plastic bucket, the plastic bucket is removed from the mold by the coordinated movement of the electric push rod and the hydraulic rod.

Benefits of technology

It reduced the probability of workers being burned and improved demolding speed and efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the field of plastic bucket production, and discloses a plastic bucket post-production demoulding device which comprises a demoulding mechanism, a supporting plate and a bottom plate, the demoulding mechanism comprises an electric push rod, an air pump, a mould and a hydraulic rod, the output end of the air pump is fixedly connected with an air pipe, and the bottom of the air pipe is fixedly connected with a suction cup. The output end of the electric push rod is fixedly connected with a transverse plate, the outer wall of the mold is fixedly connected with a movable plate, the output end of the hydraulic rod is fixedly connected with a push disc, the bottom of the suction cup is movably connected with a plastic barrel body, the top of the push disc is fixedly connected with the center of the bottom of the mold, and the plastic barrel body is movably connected into the mold. The bottom of the air pump is fixedly connected with the rear portion of the top of the transverse plate, and the inner wall of the end, away from the electric push rod, of the transverse plate is fixedly connected with the upper portion of the outer wall of the air pipe. According to the utility model, through the arrangement of the demolding mechanism, automatic demolding can be realized, the probability that workers are scalded is reduced, and meanwhile, the demolding speed can be higher.
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Description

Technical Field

[0001] This utility model relates to the field of plastic bucket production, and in particular to a demolding device for plastic buckets after production. Background Technology

[0002] Plastic buckets are common containers, mostly made of plastics such as polyethylene and polypropylene through processes like blow molding and injection molding. They are used in daily life to store clothing, toys, cleaning agents, rice, and other items. In the production of plastic buckets, demolding machines are used primarily to help the molded plastic buckets quickly release from the mold.

[0003] In the process of realizing this application, the inventors discovered the following problems with the existing technology: the existing plastic bucket demolding generally includes a plastic bucket, an upper mold, a lower mold, a support mechanism, a fixing mechanism, and other structures. The existing plastic bucket demolding relies on the worker's skill level, and there is a high probability that the worker will be burned during the demolding process.

[0004] Therefore, those skilled in the art have provided a demolding device for plastic buckets after production to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a demolding device for plastic buckets after production. This device enables automated demolding, reduces the probability of workers being burned, and speeds up the demolding process.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a demolding device for plastic buckets after production, comprising a demolding mechanism, a support plate, and a base plate. The demolding mechanism includes an electric push rod, an air pump, a mold, and a hydraulic rod. An air pipe is fixedly connected to the output end of the air pump, and a suction cup is fixedly connected to the bottom of the air pipe. A horizontal plate is fixedly connected to the output end of the electric push rod. A movable plate is fixedly connected to the outer wall of the mold. A push plate is fixedly connected to the output end of the hydraulic rod. The plastic bucket body is movably connected to the bottom of the suction cup.

[0007] Furthermore, the top of the push plate is fixedly connected to the center of the bottom of the mold, and a plastic bucket body is movably connected inside the mold.

[0008] Furthermore, the bottom of the air pump is fixedly connected to the rear top of the horizontal plate, and the inner wall of the end of the horizontal plate away from the electric push rod is fixedly connected to the upper part of the outer wall of the air pipe. The air pipe is made of stainless steel.

[0009] Furthermore, a reinforcing plate is fixedly connected to the outer wall of the electric push rod near the mold, and the top of the reinforcing plate is fixedly connected to the bottom end face of the horizontal plate near the electric push rod.

[0010] Furthermore, a servo motor is fixedly connected to the inner wall of the top of the support plate, the output end of the servo motor is fixedly connected to the bottom of the electric push rod, and the bottom of the support plate near the mold is movably connected to the top of the movable plate near the electric push rod.

[0011] Furthermore, the inner wall of the movable plate is slidably connected with multiple limiting rods, and the bottom of the multiple limiting rods is fixedly connected to the top of the base plate.

[0012] Furthermore, the bottom of the hydraulic rod is fixedly connected to the top of the base plate, and the bottom of the support plate is fixedly connected to the top of the base plate on the side near the electric push rod.

[0013] This utility model has the following beneficial effects:

[0014] 1. This utility model proposes a demolding device for plastic buckets after production. When the plastic bucket body needs to be demolded, an electric push rod drives the horizontal plate, air pipe, suction cup, and other structures to move downwards. When the suction cup contacts the bottom of the plastic bucket body and is sucked up, the air pump starts working to expel the residual air in the suction cup through the air pipe and air pump, making the suction cup more firmly attached to the inner wall of the plastic bucket body. Then, the electric push rod and hydraulic rod start working respectively. The electric push rod drives the horizontal plate, air pipe, suction cup, plastic bucket body, and other structures to move upwards. At this time, the output end of the hydraulic rod drives the push plate, mold, moving plate, and other structures to move downwards. The plastic bucket body can be sucked out of the mold through the suction cup, eliminating the need for worker operation for demolding and avoiding worker burns. The mold and plastic bucket body move in opposite directions, which can make the demolding speed faster. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a partial structural schematic diagram of the present invention;

[0017] Figure 3 This is a top view of the overall structure of this utility model;

[0018] Figure 4 This is a partial structural diagram of the demolding mechanism of this utility model.

[0019] Legend:

[0020] 1. Demolding mechanism; 2. Support plate; 3. Base plate; 101. Moving plate; 102. Servo motor; 103. Electric push rod; 104. Reinforcing plate; 105. Horizontal plate; 106. Air pump; 107. Air pipe; 108. Mold; 109. Push plate; 110. Hydraulic rod; 111. Limiting rod; 112. Suction cup; 113. Plastic bucket body. Detailed Implementation

[0021] 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.

[0022] Reference Figures 1-4 An embodiment of this utility model provides a plastic bucket demolding device, including a demolding mechanism 1, a support plate 2, and a base plate 3. The demolding mechanism 1 includes an electric push rod 103, an air pump 106, a mold 108, and a hydraulic rod 110. An air pipe 107 is fixedly connected to the output end of the air pump 106, and a suction cup 112 is fixedly connected to the bottom of the air pipe 107. A horizontal plate 105 is fixedly connected to the output end of the electric push rod 103. A movable plate 101 is fixedly connected to the outer wall of the mold 108. A push plate 109 is fixedly connected to the output end of the hydraulic rod 110. The plastic bucket body 113 is movably connected to the bottom of the suction cup 112.

[0023] Specifically, when the plastic bucket body 113 cools and needs to be demolded, the electric push rod 103 operates, its output end driving the horizontal plate 105, reinforcing plate 104, air pump 106, air pipe 107, suction cup 112, and other structures to move downwards. The reinforcing plate 104 further strengthens the supporting performance of the horizontal plate 105. When the suction cup 112 contacts and sucks up the bottom of the plastic bucket body 113, the air pump 106 operates to expel the residual air in the suction cup 112 through the air pipe 107 and the air pump 106, so that the suction cup 112 is firmly attached to the inner wall of the plastic bucket body 113. 106 is a two-way pump that can perform both suction and exhaust functions, which in turn activates the electric push rod 103 and the hydraulic rod 110. The output end of the electric push rod 103 drives the horizontal plate 105, air pipe 107, suction cup 112, plastic bucket body 113 and other structures to move upward along the inner wall of the mold 108. At the same time, the hydraulic rod 110 drives the push plate 109, mold 108, moving plate 101 and other structures to move downward along the four limit rods 111. The demolding efficiency of the plastic bucket body 113 is further increased by the movement of the electric push rod 103 and the hydraulic rod 110 in two directions.

[0024] Reference Figures 1-4The top of the push plate 109 is fixedly connected to the center of the bottom of the mold 108. A plastic bucket body 113 is movably connected inside the mold 108. The bottom of the air pump 106 is fixedly connected to the rear of the top of the horizontal plate 105. The inner wall of the end of the horizontal plate 105 away from the electric push rod 103 is fixedly connected to the upper part of the outer wall of the air pipe 107. The air pipe 107 is made of stainless steel. A reinforcing plate 104 is fixedly connected to the outer wall of the electric push rod 103 near the mold 108. The top of the reinforcing plate 104 is fixedly connected to the bottom end of the horizontal plate 105 near the electric push rod 103. A servo motor 102 is fixedly connected to the inner wall of the top of the support plate 2. The output end of the servo motor 102 is fixedly connected to the bottom of the electric push rod 103. The bottom of the support plate 2 near the mold 108 is movably connected to the top of the moving plate 101 near the electric push rod 103. Multiple limit rods 111 are slidably connected to the inner wall of the moving plate 101. The bottom of the multiple limit rods 111 is fixedly connected to the top of the base plate 3. The bottom of the hydraulic rod 110 is fixedly connected to the top of the base plate 3. The bottom of the support plate 2 is fixedly connected to the top of the side of the base plate 3 near the electric push rod 103.

[0025] Specifically, the push plate 109 can drive the mold 108 downward through the bottom hydraulic rod 110. The horizontal plate 105 provides support for the air pump 106, air pipe 107, suction cup 112 and other structures. The air pipe 107 is made of stainless steel and is a rigid pipe. The reinforcing plate 104 further improves the support performance of the horizontal plate 105. The servo motor 102 has its own self-locking mechanism, the principle of which will not be elaborated here. The self-locking function of the servo motor 102 can make the plastic bucket body 113 more stable during demolding and prevent it from shaking. The support plate 2 provides fixation for the servo motor 102, electric push rod 103 and other structures. The bottom plate 3 provides support and fixation for the overall structure.

[0026] Working principle: When demolding is required after the plastic bucket body 113 is formed, the electric push rod 103 can be activated. The output end of the electric push rod 103 moves downward, driving the horizontal plate 105, reinforcing plate 104, air pump 106, air pipe 107, suction cup 112 and other structures to move downward until the suction cup 112 contacts and sucks the bottom of the plastic bucket body 113. Then, the air pump 106 is activated to discharge the air remaining in the suction cup 112 through the air pipe 107 and the air pump 106, so that the suction cup 112 is firmly attached to the inner wall of the plastic bucket body 113.

[0027] Next, the electric push rod 103 and the hydraulic rod 110 are activated respectively. The output end of the electric push rod 103 moves upward, driving the horizontal plate 105, the reinforcing plate 104, the air pump 106, the air pipe 107, the suction cup 112, the plastic bucket body 113 and other structures to move upward. At the same time, the servo motor 102 can drive the above structures to rotate 180 degrees to the right, which will not hinder the subsequent injection molding process. The hydraulic rod 110 drives the push plate 109, the mold 108, the moving plate 101 and other structures to move downward along multiple limit rods 111. Through the cooperation of the electric push rod 103 and the hydraulic rod 110, the demolding efficiency of the plastic bucket body 113 is further increased.

[0028] 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 post-production demoulding device for plastic drums, comprising a demoulding mechanism (1), a support plate (2) and a base plate (3), characterised in that: The demolding mechanism (1) includes an electric push rod (103), an air pump (106), a mold (108), and a hydraulic rod (110). The output end of the air pump (106) is fixedly connected to an air pipe (107), and the bottom of the air pipe (107) is fixedly connected to a suction cup (112). The output end of the electric push rod (103) is fixedly connected to a horizontal plate (105). The outer wall of the mold (108) is fixedly connected to a movable plate (101). The output end of the hydraulic rod (110) is fixedly connected to a push plate (109). The bottom of the suction cup (112) is movably connected to a plastic bucket body (113).

2. A post-mold ejector for plastic pails as defined in claim 1, wherein: The top of the push plate (109) is fixedly connected to the center of the bottom of the mold (108), and a plastic bucket body (113) is movably connected inside the mold (108).

3. A post-mold ejector for plastic pails as defined in claim 1, wherein: The bottom of the air pump (106) is fixedly connected to the top rear of the horizontal plate (105). The inner wall of the end of the horizontal plate (105) away from the electric push rod (103) is fixedly connected to the upper part of the outer wall of the air pipe (107). The air pipe (107) is made of stainless steel.

4. The post-mold ejector for plastic pails as set forth in claim 1, wherein: A reinforcing plate (104) is fixedly connected to the outer wall of the electric push rod (103) near the mold (108). The top of the reinforcing plate (104) is fixedly connected to the bottom surface of the horizontal plate (105) near the electric push rod (103).

5. The post-mold ejector for plastic pails as set forth in claim 1, wherein: A servo motor (102) is fixedly connected to the inner wall of the top of the support plate (2). The output end of the servo motor (102) is fixedly connected to the bottom of the electric push rod (103). The bottom of the support plate (2) near the mold (108) is movably connected to the top of the moving plate (101) near the electric push rod (103).

6. A post-mold ejector for plastic pails as defined in claim 1, wherein: The inner wall of the movable plate (101) is slidably connected with multiple limiting rods (111), and the bottom of the multiple limiting rods (111) is fixedly connected to the top of the base plate (3).

7. The post-mold ejector for plastic pails as set forth in claim 1, wherein: The bottom of the hydraulic rod (110) is fixedly connected to the top of the base plate (3), and the bottom of the support plate (2) is fixedly connected to the top of the side of the base plate (3) near the electric push rod (103).