Multi-layer composite wear-resistant plastic box extrusion device

Abstract

The utility model relates to the field of plastic box production, in particular to a multi-layer composite wear-resistant plastic box extrusion device, which comprises an extruder and a forming device, the forming device comprises a die holder and a die, a demoulding device is mounted on the inner wall of the die and comprises a fixed block and a push block, and a slotted hole is formed in the center of the outer wall of the die in a penetrating manner. A fixed block is fixedly connected to the inner wall of the slotted hole, four sliding holes surrounding a circle at equal intervals are formed in the right end of the fixed block in a penetrating mode, sliding rods are arranged in the sliding holes in a sliding mode, the left ends of the sliding rods penetrate through the sliding holes and are jointly and fixedly connected with a pushing block, supporting rods are fixedly connected to the centers of the right ends of the sliding rods, and the outer walls of the supporting rods are sleeved with supporting sleeves; according to the demolding device, the electric cylinder can push the push block to push the box shell adhered to the mold, and the spring can buffer the thrust of the electric cylinder, so that the manual operation of workers is reduced, and the demolding efficiency of the box shell is improved while the box shell is prevented from being damaged.

Description

Technical Field

[0001] This utility model belongs to the field of plastic box production, and specifically relates to a multi-layer composite wear-resistant plastic box extrusion device. Background Technology

[0002] In the field of plastics processing, extrusion molding of plastic boxes is a common production process. As a key piece of equipment, the performance of the extrusion molding device directly affects the production efficiency and quality of plastic boxes. Demolding is an important step in the extrusion molding process, and the convenience and efficiency of demolding are crucial to the entire production process.

[0003] Existing conventional plastic box extrusion molding equipment often presents challenges in demolding after extrusion molding. Traditional lower mold structures typically lack effective auxiliary demolding mechanisms. After the plastic box shell cools and solidifies, factors such as the adhesion between the plastic and the mold, as well as the clamping force generated by cooling shrinkage, cause the box shell to adhere tightly to the mold, making it difficult to detach smoothly. Previous demolding methods may require cumbersome manual operations, such as manual prying, which not only increases the labor intensity of operators but also results in low efficiency, seriously affecting the degree of automation and production efficiency. Improper force during manual demolding can also lead to deformation and damage of the molded box shell, reducing the product qualification rate and increasing production costs. Utility Model Content

[0004] To overcome the problems of inconvenient demolding during use of plastic box extrusion devices and the potential damage to the box shell caused by manual demolding, a multi-layer composite wear-resistant plastic box extrusion device is proposed.

[0005] The technical solution of this utility model is as follows: a multi-layer composite wear-resistant plastic box extrusion device, including an extruder and a molding device. The molding device includes a mold base and a mold. A demolding device is installed on the inner wall of the mold. The demolding device includes a fixing block and a push block. A slot is opened through the center of the outer wall of the mold. A fixing block is fixedly connected to the inner wall of the slot. Four sliding holes are opened through the right end of the fixing block at equal intervals around the perimeter. A sliding rod is slidably installed in the sliding hole. The left end of the sliding rod passes through the sliding hole and is fixedly connected to the push block. A support rod is fixedly connected to the center of the right end of each sliding rod. A support sleeve is fitted on the outer wall of each support rod. A spring is wrapped around the outer wall of each support rod. One end of the spring is fixedly connected to the right edge of the sliding rod, and the other end of the spring is fixedly connected to the left edge of the support sleeve. A support plate is fixedly connected to the right end of the support sleeve. A support frame is fixedly connected to the center of the inner wall of the right end of the mold. An electric cylinder is fixedly connected to the center of the left end of the support frame. The output end of the electric cylinder is fixedly connected to the center of the right end of the support plate.

[0006] Furthermore, the outer wall of the pusher block fits against the inner wall of the slot, and the left end of the pusher block is flush with the left outer wall of the mold. The demolding device also includes an air pump.

[0007] Furthermore, the air pump is fixed to the inner wall of the right end of the mold, and an air outlet groove is opened through the center of the right end of the fixing block. The air pump's inflation pipe is connected to the air outlet groove.

[0008] Furthermore, the molding device also includes a housing, which is fixed to the outer wall of the extruder, and a mold base is fixed to the inner wall of the left end of the housing.

[0009] Furthermore, the discharge end of the extruder is connected to the feed end of the die holder via a pipe, and a fixing plate is fixed to the right end of the die, with symmetrical upper and lower limit posts fixed to the right end of the fixing plate.

[0010] Furthermore, a limiting sleeve is fitted on the outer wall of the limiting post, and the right end of the limiting sleeve is fixed to the inner wall of the right end of the housing. An electric cylinder is fixed to the center of the inner wall of the right end of the housing.

[0011] Furthermore, the output end of the electric cylinder is fixed to the center of the right end of the fixed plate, the mold base is compatible with the mold, and the lower end of the box is provided with a material discharge port.

[0012] The beneficial effects of this utility model are as follows: The output end of the electric cylinder can drive the support plate to move, thereby pushing the support sleeve to slide the slide rod along the inner wall of the sliding hole, so that the push block moves out along the inner wall of the slot hole, pushing the box shell attached to the outer wall of the left end of the mold, so that the extruded box shell can be detached from the outer wall of the mold. Then, the spring can buffer the push of the slide rod by the electric cylinder, so that the support rod slides along the inner wall of the support sleeve. The spring can slowly push the slide rod. Compared with the existing plastic box extrusion device, the added demolding device can push the push block to push the box shell attached to the mold by the electric cylinder, and the spring can buffer the push force of the electric cylinder, reducing the manual operation of the worker, and improving the demolding efficiency of the box shell while avoiding damage to the box shell. Attached Figure Description

[0013] Figure 1 The diagram shown is a three-dimensional structural schematic of this utility model;

[0014] Figure 2 The diagram shown is a three-dimensional structural disassembly diagram of this utility model;

[0015] Figure 3 The diagram shown is a three-dimensional disassembled view of the demolding device of this utility model.

[0016] Figure 4 The diagram shown is a three-dimensional structural schematic of the mold and slot of this utility model.

[0017] Figure 5 The diagram shown is a three-dimensional disassembled view of the molding device of this utility model.

[0018] Explanation of reference numerals in the attached drawings: 1. Extruder; 2. Molding device; 201. Box body; 202. Mold base; 203. Mold; 204. Fixing plate; 205. Electric cylinder one; 206. Limiting post; 207. Limiting sleeve; 208. Material discharge port; 209. Slot; 3. Demolding device; 301. Fixing block; 302. Push block; 303. Sliding hole; 304. Air outlet groove; 305. Sliding rod; 306. Support rod; 307. Spring; 308. Support sleeve; 309. Support plate; 310. Electric cylinder two; 311. Support frame; 312. Air pump. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Please see Figures 1-5 This utility model provides an embodiment: a multi-layer composite wear-resistant plastic box extrusion device, including an extruder 1 and a molding device 2. The molding device 2 includes a mold base 202 and a mold 203. A demolding device 3 is installed on the inner wall of the mold 203. The demolding device 3 includes a fixing block 301 and a push block 302. A slot 209 is opened through the center of the outer wall of the mold 203. The fixing block 301 is fixedly connected to the inner wall of the slot 209. Four sliding holes 303 are opened through the right end of the fixing block 301, which are equidistantly arranged around the perimeter. A sliding rod 305 is slidably installed in the sliding holes 303. The left end of the sliding rod 305 passes through the sliding holes 303 and is fixedly connected to the mold. The push block 302 and the right end center of the slide rod 305 are both fixedly connected to the support rod 306. The outer wall of the support rod 306 is fitted with the support sleeve 308. The outer wall of the support rod 306 is surrounded by the spring 307. One end of the spring 307 is fixedly connected to the right end edge of the slide rod 305, and the other end of the spring 307 is fixedly connected to the left end edge of the support sleeve 308. The right end of the support sleeve 308 is fixedly connected to the support plate 309. The right end inner wall center of the mold 203 is fixedly connected to the support frame 311. The left end center of the support frame 311 is fixedly connected to the electric cylinder 310. The output end of the electric cylinder 310 is fixedly connected to the right end center of the support plate 309.

[0021] The output end of the electric cylinder 310 can drive the support plate 309 to move, thereby pushing the support sleeve 308 to drive the slide rod 305 to slide along the inner wall of the sliding hole 303, so that the push block 302 moves out along the inner wall of the slot 209, pushing the box shell that is attached to the outer wall of the left end of the mold 203, so that the extruded box shell can be detached from the outer wall of the mold 203. Then, the spring 307 can buffer the push of the slide rod 305 by the electric cylinder 310, so that the support rod 306 slides along the inner wall of the support sleeve 308. The spring 307 can slowly push the slide rod 305 to prevent the push block 302 from damaging the box shell that is attached to the outer wall of the mold 203 due to excessive pushing force.

[0022] Please see Figure 3In this embodiment, the outer wall of the push block 302 is in contact with the inner wall of the slot 209, and the left end of the push block 302 is flush with the outer wall of the left end of the mold 203. The demolding device 3 also includes an air pump 312. In use, by having the outer wall of the push block 302 in contact with the inner wall of the slot 209, material can be prevented from entering the slot 209 and causing blockage. The push block 302 is flush with the mold 203, which can ensure the aesthetics of the extruded box shell and avoid pits or protrusions on the box shell. The air pump 312 is fixed to the inner wall of the right end of the mold 203. An air outlet groove 304 is provided through the center of the right end of the fixing block 301. The air pump 312 is connected to the air outlet groove 304. In use, the air pump 312 can inflate the space between the box shell and the mold 203 when the push block 302 pushes up the box shell, which can quickly separate the box shell.

[0023] Please see Figures 2-5 In this embodiment, the molding device 2 also includes a housing 201, which is fixed to the outer wall of the extruder 1. A mold base 202 is fixed to the inner wall of the left end of the housing 201. In use, the housing 201 can support the mold base 202. The discharge end of the extruder 1 is connected to the feed end of the mold base 202 via a pipe. A fixing plate 204 is fixed to the right end of the mold 203. A symmetrical upper and lower limiting post 206 is fixed to the right end of the fixing plate 204. In use, the extruder 1 can squeeze the mixed raw materials into the mold base 202, thereby cooperating with the mold 203 to extrude the raw materials into a housing.

[0024] Please see Figure 5 In this embodiment, a limiting sleeve 207 is fitted on the outer wall of the limiting post 206. The right end of the limiting sleeve 207 is fixed to the inner wall of the right end of the housing 201. An electric cylinder 205 is fixed to the center of the inner wall of the right end of the housing 201. In use, the electric cylinder 205 can drive the mold 203 to engage with or move away from the mold base 202. The limiting post 206 and the limiting sleeve 207 can improve the accuracy of the mold 203 engaging with the mold base 202. The output end of the electric cylinder 205 is fixed to the center of the right end of the fixing plate 204. The mold base 202 is adapted to the mold 203. A discharge port 208 is opened at the lower end of the housing 201. In use, the raw material extruded by the extruder 1 can be extruded and formed by the adaptation of the mold base 202 and the mold 203. The discharge port 208 can conveniently discharge the extruded housing.

[0025] During operation, firstly, the materials to be mixed are poured into extruder 1. After the extruder 1 has mixed, softened, and extruded the materials, electric cylinder 205 is started, causing its output end to push mold 203 closer to mold base 202. After mold 203 and mold base 202 are properly engaged, extruder 1 forces the raw material into the gap between mold base 202 and mold 203. Then, after the raw material is extruded, shaped, and solidified, electric cylinder 205 is started again, causing its output end to... The end drives the mold 203 away from the mold base 202 and is located above the material outlet 208. Then, the electric cylinder 310 is started, and the output end of the electric cylinder 310 pushes the support plate 309 to the right, so that the spring 307 pushes the slide rod 305 to drive the push block 302 to push the box shell away. Finally, after the push block 302 pushes up part of the box shell, the air pump 312 is started. Wait for the air pump 312 to fill the gap between the box shell and the mold 203 with air, so that the box shell can be quickly removed from the mold 203.

[0026] Through the above steps, the output end of the electric cylinder 310 can drive the support plate 309 to move, thereby pushing the support sleeve 308 to drive the slide rod 305 to slide along the inner wall of the sliding hole 303, so that the push block 302 moves out along the inner wall of the slot 209, pushing the box shell that is attached to the outer wall of the left end of the mold 203, so that the extruded box shell can be detached from the outer wall of the mold 203. The spring 307 can buffer the push of the slide rod 305 by the electric cylinder 310, so that the support rod 306 slides along the inner wall of the support sleeve 308. The spring 307 can slowly push the slide rod 305, which solves the problem that demolding is inconvenient when using the plastic box extrusion device, and manual demolding may damage the box shell.

Claims

1. A multi-layer composite wear-resistant plastic box extrusion device, comprising an extruder (1) and a forming device (2), characterized in that: The molding device (2) includes a mold base (202) and a mold (203). A demolding device (3) is installed on the inner wall of the mold (203). The demolding device (3) includes a fixing block (301) and a push block (302). A slot (209) is opened through the center of the outer wall of the mold (203). The fixing block (301) is fixedly connected to the inner wall of the slot (209). Four sliding holes (303) are opened through the right end of the fixing block (301) and are equidistantly arranged around the perimeter. A sliding rod (305) is slidably installed in the sliding hole (303). The left end of the sliding rod (305) passes through the sliding hole (303) and is fixedly connected to the push block (302). The center of the right end of the sliding rod (305) is fixedly connected to the push block (302). A support rod (306) is attached, and a support sleeve (308) is fitted on the outer wall of the support rod (306). A spring (307) is wrapped around the outer wall of the support rod (306). One end of the spring (307) is fixed to the right edge of the slide rod (305), and the other end of the spring (307) is fixed to the left edge of the support sleeve (308). A support plate (309) is fixed to the right end of the support sleeve (308). A support frame (311) is fixed to the center of the inner wall of the right end of the mold (203). An electric cylinder (310) is fixed to the center of the left end of the support frame (311). The output end of the electric cylinder (310) is fixed to the center of the right end of the support plate (309).

2. The multi-layer composite wear-resistant plastic box extrusion device according to claim 1, characterized in that: The outer wall of the push block (302) fits against the inner wall of the slot (209), and the left end of the push block (302) is flush with the outer wall of the left end of the mold (203). The demolding device (3) also includes an air pump (312).

3. The multi-layer composite wear-resistant plastic box extrusion device according to claim 2, characterized in that: The air pump (312) is fixed to the inner wall of the right end of the mold (203). The right end of the fixing block (301) has a through-hole (304) and the air pump (312) is connected to the air outlet (304).

4. The multi-layer composite wear-resistant plastic box extrusion device according to claim 3, characterized in that: The molding device (2) also includes a housing (201), which is fixed to the outer wall of the extruder (1), and a mold base (202) is fixed to the inner wall of the left end of the housing (201).

5. The multi-layer composite wear-resistant plastic box extrusion device according to claim 4, characterized in that: The discharge end of the extruder (1) is connected to the feed end of the die holder (202) via a pipe. A fixing plate (204) is fixed to the right end of the die (203), and a symmetrical upper and lower limiting post (206) is fixed to the right end of the fixing plate (204).

6. The multi-layer composite wear-resistant plastic box extrusion device according to claim 5, characterized in that: A limiting sleeve (207) is fitted on the outer wall of the limiting post (206). The right end of the limiting sleeve (207) is fixed to the inner wall of the right end of the box (201). An electric cylinder (205) is fixed to the center of the inner wall of the right end of the box (201).

7. The multi-layer composite wear-resistant plastic box extrusion device according to claim 6, characterized in that: The output end of the electric cylinder (205) is fixed to the center of the right end of the fixed plate (204), the mold base (202) is adapted to the mold (203), and the lower end of the box (201) is provided with a material discharge port (208).

Images