Low-density foamed plastic forming device

By improving the design of the molding device, and utilizing water cooling and a slide bar mechanism, the problems of uneven cooling and unstable plastic molding were solved, enabling convenient plastic filling, shaping, and cooling molding, reducing costs and improving environmental protection.

CN224158743UActive Publication Date: 2026-04-24SHENYANG WIN STAR PLASTIC CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHENYANG WIN STAR PLASTIC CO LTD
Filing Date
2025-05-29
Publication Date
2026-04-24

AI Technical Summary

Technical Problem

Existing low-density foamed plastic molding equipment has problems with uneven cooling and plastic molding stability, resulting in unstable molding results.

Method used

The design combines a molding mechanism, water tank, water pump, nozzle, and feeding mechanism. By spraying water for cooling and recycling water resources, and combined with the operation of a slide plate and a lever, it enables convenient filling, shaping, and cooling of plastics.

Benefits of technology

It improves the convenience of plastic filling, shaping, and cooling, enhances the cooling effect, reduces usage costs, and improves environmental friendliness.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a low-density foamed plastic forming device, which relates to the technical field of forming devices for processing and comprises supporting legs, a forming mechanism is arranged at the tops of the supporting legs, and a feeding mechanism is arranged at the top of the forming mechanism. When the plastic filling device is used, a hose is taken up, a hanging ring on a hook is taken down, a handle on a sliding plate is pulled upwards, the hose is inserted into a forming cylinder, a feeding pump is started, and plastic in a material barrel enters the forming cylinder along the hose, so that the plastic filling device is filled with the plastic, the convenience of plastic filling is improved, and after the plastic filling is completed, the plastic filling device is convenient to use. And the hose is pulled out, the sliding plate is inserted back downwards, the hanging ring is hung on the hook, the pull rod is pushed rightwards to drive the extrusion plate to slide rightwards in the forming cylinder and extrude the plastic, so that the plastic is shaped, and the plastic shaping convenience is improved.
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Description

Technical Field

[0001] This utility model relates to the technical field of molding devices for processing, and specifically to a low-density foamed plastic molding device. Background Technology

[0002] Low-density foamed plastic molding equipment is an important technology in plastic processing, widely used in packaging, construction, automotive, electronics and other industries. This equipment uses a specific process to mix plastic raw materials with a foaming agent, inject the mixture into a mold, and then perform heating, foaming, and cooling steps to ultimately produce foamed plastic products with characteristics such as low density, high specific strength, and good thermal insulation properties.

[0003] Patent publication number CN215511972U discloses a molding device for the production and processing of low-density foamed plastics, including a shell, a molding chamber and a demolding chamber. A top frame is welded to the top of the shell, and a molding pump is bolted to the top frame. A molding top plate is bolted to the output end of the molding pump. The molding top plate is slidably connected to the top of the shell. A feed pipe is inserted through the molding top plate. An electric telescopic rod is bolted to the bottom of the inner wall of the demolding chamber. A molding bottom plate is welded to the end of the electric telescopic rod near the molding chamber. Molding partitions are fixedly connected to the shell around the perimeter near the molding bottom plate.

[0004] To address the issues in plastic molding, existing technology involves first injecting foamed plastic raw materials into the molding chamber through a feed pipe. Then, a molding pump is activated, driving the molding top plate to pressurize, heat, and extrude the foamed material in the molding chamber. After extrusion molding, a cooling pump in the water tank is activated, allowing water to flow through a cooling pipe into the molding bottom plate to cool the foamed plastic. Next, four levers are pulled sequentially, causing them to slide outwards and compress the springs via a spring pressure plate. This separates the foamed plastic from the molding side plate. An electric telescopic rod then retracts the molding bottom plate, causing the foamed plastic to descend into the demolding chamber. Finally, a push rod handle is pushed, causing the demolding push rod to slide inwards against the push rod column and the inner wall of the outer shell. The demolding push rod then drives the demolding push plate to push the foamed plastic on the molding bottom plate towards the discharge port. However, this method suffers from problems such as poor localized cooling in the cooling water pipes and the plastic returning to the feed pipe during extrusion, leading to unstable cooling and molding effects. Utility Model Content

[0005] The purpose of this invention is to provide a low-density foamed plastic molding device to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] A low-density foamed plastic molding device includes a support leg, a molding mechanism is provided on the top of the support leg, and a feeding mechanism is provided on the top of the molding mechanism.

[0008] The forming mechanism includes a base plate, a support plate is fixedly connected to the top surface of the base plate, a forming cylinder is fixedly connected to the top of the support plate, a sliding plate is slidably connected inside the top surface of the forming cylinder, a handle is provided at the top of the sliding plate, and the bottom end of the sliding plate is movably connected to the lower part of the inner wall of the forming cylinder.

[0009] A further improvement of this utility model is that: an extrusion plate is movably connected inside the forming cylinder, the extrusion plate cooperates with the sliding plate, and a pull rod is slidably connected inside the left side of the forming cylinder, the pull rod being fixedly connected to the extrusion plate.

[0010] A further improvement of this utility model is that: a water tank and a support rod are fixedly connected to the top surface of the base plate, a collection box is movably connected to the top surface of the base plate, the water tank is located below the forming cylinder, a water pump is fixedly connected to the back of the water tank, the input end of the water pump is connected to the interior of the water tank, and a water pipe is fixedly connected to the output end of the water pump.

[0011] A further improvement of this utility model is that: a nozzle is fixedly connected to the upper side of the support rod, the nozzle is located above the forming cylinder, the nozzle is fixedly connected to the water pipe, and the collection box is located on the lower right side of the forming cylinder.

[0012] A further improvement of the present invention is that the feeding mechanism includes a second support plate, the bottom end of the second support plate is fixedly connected to the base plate, the top end of the second support plate is fixedly connected to a material bucket, a feeding pump is fixedly connected to the lower front of the material bucket, and a hook is fixedly connected to the upper front of the material bucket.

[0013] A further improvement of this utility model is that the input end of the feeding pump is connected to the inside of the material barrel, and the output end of the feeding pump is fixedly connected to a flexible hose.

[0014] A further improvement of this utility model is that a hanging ring is fixedly connected to one end of the hose, and the hanging ring cooperates with the hook.

[0015] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0016] This utility model provides a low-density foamed plastic molding device, comprising a molding mechanism, a base plate, a first support plate, a molding cylinder, a sliding plate, an extrusion plate, a pull rod, a water tank, a support rod, a collection box, a water pump, water pipes, a nozzle, a feeding mechanism, a second support plate, a material bucket, a feeding pump, a hook, a hose, and a hanging ring. When using this device, the hose is lifted, the hanging ring on the hook is removed, the handle on the sliding plate is pulled upwards to insert the hose into the molding cylinder, and the feeding pump is started. The plastic in the material bucket flows along the hose into the molding cylinder, thus filling the device with plastic, improving the convenience of plastic filling. After the plastic is filled, the hose is pulled out, the sliding plate is inserted downwards, the hanging ring is hung on the hook, and the pull rod is pushed to the right to drive the extrusion plate to slide to the right inside the molding cylinder and extrude the plastic, thereby shaping the plastic. The hook and hanging ring prevent plastic from leaking from the material bucket and the molding cylinder. The material enters the hose, improving the convenience and stability of plastic molding. At this point, the plastic needs to be cooled and molded. The water pump is started, and water from the water tank enters the nozzle along the water pipe and is sprayed onto the molding cylinder, thereby reducing the temperature of the plastic inside the molding cylinder and allowing it to solidify. This improves the convenience of cooling and molding the plastic. After being sprayed onto the molding cylinder, the water flows along the side of the molding cylinder to the bottom surface and finally flows back to the water tank, thus recycling water resources, reducing the operating cost of the device and improving the cooling and environmental protection effects. After the plastic has cooled and solidified, the slide plate is pulled upwards, and the pull rod is pushed to the right. The extrusion plate pushes the molded plastic to the right and separates it from the molding cylinder. The molding cylinder enters the collection box, thus collecting the molded plastic. The collection box is movably connected to the base plate so that the collection box can be moved together with the plastic when it is moved, improving the convenience of moving the molded plastic. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a cross-sectional structural diagram of the molding cylinder of this utility model;

[0019] Figure 3 This is a schematic diagram of the rear structure of the water tank of this utility model;

[0020] Figure 4 This is a schematic diagram of the feeding mechanism of this utility model.

[0021] In the diagram: 1. Support leg; 2. Forming mechanism; 201. Base plate; 202. Support plate one; 203. Forming cylinder; 204. Slide plate; 205. Extrusion plate; 206. Tie rod; 207. Water tank; 208. Support rod; 209. Collection box; 210. Water pump; 211. Water pipe; 212. Nozzle; 3. Feeding mechanism; 301. Support plate two; 302. Material bucket; 303. Feeding pump; 304. Hook; 305. Hose; 306. Hanging ring. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to embodiments:

[0023] Example 1

[0024] like Figure 1-4 As shown, this utility model provides a low-density foamed plastic molding device, including a support leg 1, a molding mechanism 2 on the top of the support leg 1, a feeding mechanism 3 on the top of the molding mechanism 2, a base plate 201, a support plate 202 fixedly connected to the top surface of the base plate 201, a molding cylinder 203 fixedly connected to the top of the support plate 202, a sliding plate 204 slidably connected inside the top surface of the molding cylinder 203, a handle on the top of the sliding plate 204, and a movable connection between the bottom end of the sliding plate 204 and the lower inner wall of the molding cylinder 203. An extrusion plate 205 is movably connected inside the molding cylinder 203, cooperating with the sliding plate 204. A pull rod 206 is slidably connected inside the left side of the molding cylinder 203, and is fixedly connected to the extrusion plate 205. A water tank 207 and a support rod 208 are fixedly connected to the top surface of the base plate 201, and a collection box 209 is movably connected to the top surface of the base plate 201. The water tank 207 is located within the molding cylinder 203. Below, a water pump 210 is fixedly connected to the back of the water tank 207. The input end of the water pump 210 is connected to the inside of the water tank 207, and the output end of the water pump 210 is fixedly connected to a water pipe 211. A nozzle 212 is fixedly connected to the upper side of the support rod 208. The nozzle 212 is located above the forming cylinder 203 and is fixedly connected to the water pipe 211. The collection box 209 is located on the lower right side of the forming cylinder 203. The feeding mechanism 3 includes a second support plate 301. The bottom of 01 is fixedly connected to the base plate 201. The top of the support plate 2 301 is fixedly connected to the material bucket 302. The front of the material bucket 302 is fixedly connected to the lower front. The front of the material bucket 302 is fixedly connected to the hook 304. The input end of the feeding pump 303 is connected to the inside of the material bucket 302. The output end of the feeding pump 303 is fixedly connected to the hose 305. One end of the hose 305 is fixedly connected to the hanging ring 306. The hanging ring 306 cooperates with the hook 304.

[0025] In this embodiment, when using this device, the hose 305 is picked up, the hanging ring 306 on the hook 304 is removed, the handle on the slide plate 204 is pulled upwards, the hose 305 is inserted into the molding cylinder 203, and the feeding pump 303 is started. The plastic in the material bucket 302 enters the molding cylinder 203 along the hose 305, thereby filling the device with plastic and improving the convenience of plastic filling. After the plastic is filled, the hose 305 is pulled out, the slide plate 204 is inserted downwards, the hanging ring 306 is hung on the hook 304, and the pull rod 206 is pushed to the right to drive the extrusion plate 205 to slide to the right in the molding cylinder 203 and extrude the plastic, thereby shaping the plastic. The hook 304 hangs the hanging ring 306 to prevent the plastic in the material bucket 302 from leaking out and the plastic in the molding cylinder 203 from entering the hose 305, improving the convenience and stability of plastic shaping. At this time, the plastic needs to be cooled and molded, so the water pump 21 is started. Water from water tank 207 enters nozzle 212 through water pipe 211 and is sprayed onto molding cylinder 203, thereby reducing the temperature of the plastic inside molding cylinder 203 and allowing it to solidify. This improves the convenience of cooling and molding the plastic. After being sprayed onto molding cylinder 203, the water flows along the side of molding cylinder 203 to the bottom surface of molding cylinder 203 and finally flows back to water tank 207, thus recycling water resources, reducing the operating cost of the device and improving the cooling and environmental protection effects. After the plastic is cooled and solidified, the sliding plate 204 is pulled upwards, and the pull rod 206 is pushed to the right. The extrusion plate 205 pushes the solidified plastic to the right and separates it from molding cylinder 203. Molding cylinder 203 enters collection box 209, thereby collecting the solidified plastic. Collection box 209 is movably connected to bottom plate 201 so that when the plastic inside collection box 209 is moved, collection box 209 is also moved together, improving the convenience of moving the solidified plastic.

[0026] The working principle of this low-density foamed plastic molding device will be explained in detail below.

[0027] like Figure 1-4As shown, when using this device, pick up the hose 305, remove the hanging ring 306 from the hook 304, pull the handle on the slide plate 204 upwards, insert the hose 305 into the molding cylinder 203, start the feeding pump 303, and the plastic in the material tank 302 enters the molding cylinder 203 along the hose 305, thus filling the device with plastic. After the plastic is filled, pull out the hose 305, insert the slide plate 204 downwards, hang the hanging ring 306 on the hook 304, push the pull rod 206 to the right to drive the extrusion plate 205 to slide to the right in the molding cylinder 203 and extrude the plastic, thereby shaping the plastic. The hook 304 hangs the hanging ring 306 to prevent the plastic in the material tank 302 from leaking out and the plastic in the molding cylinder 203 from entering the hose 305. At this time, it is necessary to process the plastic. After cooling and molding, the water pump 210 is started. Water in the water tank 207 enters the nozzle 212 through the water pipe 211 and is sprayed onto the molding cylinder 203, thereby reducing the temperature of the plastic inside the molding cylinder 203 and molding it. After being sprayed onto the molding cylinder 203, the water flows along the side of the molding cylinder 203 to the bottom surface of the molding cylinder 203 and finally flows back to the water tank 207, thus recycling water resources. After the plastic cools and molds, the slide plate 204 is pulled upward and the pull rod 206 is pushed to the right. The extrusion plate 205 pushes the molded plastic to the right and separates it from the molding cylinder 203. The molding cylinder 203 enters the collection box 209, thereby collecting the molded plastic. The collection box 209 is movably connected to the base plate 201 so that the collection box 209 can be moved together with the plastic inside the collection box 209.

[0028] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A low-density foamed plastic molding device, comprising a support leg (1), characterized in that: The top of the support leg (1) is provided with a forming mechanism (2), and the top of the forming mechanism (2) is provided with a feeding mechanism (3); The forming mechanism (2) includes a base plate (201), a support plate (202) is fixedly connected to the top surface of the base plate (201), a forming cylinder (203) is fixedly connected to the top end of the support plate (202), a sliding plate (204) is slidably connected to the inside of the top surface of the forming cylinder (203), a handle is provided at the top end of the sliding plate (204), and the bottom end of the sliding plate (204) is movably connected to the lower part of the inner wall of the forming cylinder (203).

2. The low-density foamed plastic molding apparatus according to claim 1, characterized in that: An extrusion plate (205) is movably connected inside the forming cylinder (203). The extrusion plate (205) cooperates with the sliding plate (204). A pull rod (206) is slidably connected inside the left side of the forming cylinder (203). The pull rod (206) is fixedly connected to the extrusion plate (205).

3. The low-density foamed plastic molding apparatus according to claim 2, characterized in that: A water tank (207) and a support rod (208) are fixedly connected to the top surface of the base plate (201). A collection box (209) is movably connected to the top surface of the base plate (201). The water tank (207) is located below the forming cylinder (203). A water pump (210) is fixedly connected to the back of the water tank (207). The input end of the water pump (210) is connected to the interior of the water tank (207). A water pipe (211) is fixedly connected to the output end of the water pump (210).

4. The low-density foamed plastic molding apparatus according to claim 3, characterized in that: A nozzle (212) is fixedly connected to the upper side of the support rod (208). The nozzle (212) is located above the forming cylinder (203). The nozzle (212) is fixedly connected to the water pipe (211). The collection box (209) is located on the lower right side of the forming cylinder (203).

5. The low-density foamed plastic molding apparatus according to claim 1, characterized in that: The feeding mechanism (3) includes a second support plate (301), the bottom end of which is fixedly connected to the bottom plate (201), a material bucket (302) is fixedly connected to the top end of the second support plate (301), a feeding pump (303) is fixedly connected to the lower front of the material bucket (302), and a hook (304) is fixedly connected to the upper front of the material bucket (302).

6. The low-density foamed plastic molding apparatus according to claim 5, characterized in that: The input end of the feed pump (303) is connected to the inside of the material barrel (302), and the output end of the feed pump (303) is fixedly connected to a hose (305).

7. The low-density foamed plastic molding apparatus according to claim 6, characterized in that: One end of the hose (305) is fixedly connected to a hanging ring (306), which cooperates with the hook (304).

Citation Information

Patent Citations

  • Forming device for producing and processing low-density foamed plastic

    CN215511972U