Demolding device for plastic tray production

By designing an automated mold release and cooling mechanism, manual operation difficulties and safety hazards in the plastic pallet release process are solved, and an efficient and safe production process is achieved.

CN223199358UActive Publication Date: 2025-08-08QINGZHOU SHENGRUNDE PLASTIC PACKAGING CO LTD
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Patent Information

Application Number
CN202421975654.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-08-15
Publication Date
2025-08-08
Estimated Expiration
2034-08-15

AI Technical Summary

Technical Problem

Plastic pallets rely on manual operation during demolding, resulting in increased workload and safety hazards, which are inefficient.

Method used

A mold release device for plastic pallet production including a mold release mechanism, a moving mechanism and a cooling mechanism is designed. The connecting rod drives the thimble pin to slide to eject the product through the cylinder, and drives the overall sliding movement through the oil cylinder to ensure that the mold is closed and the injection is charged, while cooling is used to cool the water flow to prevent the mold from sticking.

Benefits of technology

Automatic mold release is achieved, manual operation is reduced, production efficiency is improved, and product sticking is prevented through cooling measures to ensure safe production.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of tray production and processing, and discloses a demoulding device for plastic tray production, which comprises a demoulding mechanism, a moving mechanism, a fixed mould mechanism and a cooling mechanism, the demoulding mechanism is positioned in the moving mechanism, the fixed mould mechanism is positioned on the left side of the moving mechanism, and the cooling mechanism is positioned in the moving mechanism. The output end of the air cylinder pushes the first connecting rod, the first connecting rod is fixed to the connecting plate, the connecting plate is in threaded connection with the first connecting plate, the connecting plate is fixed to the ejector pin, the ejector pin passes through the interior of the movable mold and slides in the mold core, and when the output end of the air cylinder moves forwards, the whole is driven to move forwards, so that a product is ejected out through the ejector pin; when the product is separated from the mold, the output end of the air cylinder drives the whole to move backwards, and when the first connecting plate makes contact with the limiting block, it is just guaranteed that the front end of the ejector pin is flush with the surface of the mold core, and preparation is made for the next product.
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Description

Technical Field

[0001] The utility model relates to the technical field of pallet production and processing, in particular to a demoulding device for producing plastic pallets. Background Art

[0002] At present, the plastic pallet market often requires corresponding molds for molding operations. The emergence of plastic pallets is to meet the needs of environmental protection. Using plastic pallets instead of wooden pallets can reduce the best products for forest damage. Plastic pallets are favored and sought after by the food and pharmaceutical industries for their corrosion resistance, moisture resistance, rust resistance, insect resistance, and mildew resistance.

[0003] Plastic pallets are mostly demoulded with manual assistance, which increases the workload, reduces efficiency, and is prone to danger during manual operation. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a demoulding device for producing plastic pallets.

[0005] The utility model adopts the following technical solutions: a demoulding device for producing plastic pallets, comprising a demoulding mechanism, a moving mechanism, a fixed mold mechanism and a cooling mechanism, wherein the demoulding mechanism is located inside the moving mechanism, the fixed mold mechanism is located on the left side of the moving mechanism, and the cooling mechanism is located inside the moving mechanism;

[0006] The demoulding mechanism includes a supporting leg, the top of the supporting leg is fixedly connected to the supporting table, the top of the supporting table is provided with a slide groove, the slide groove is slidably connected to a slider, the top of the slider is fixedly connected to the movable mold, the top of the movable mold is fixedly connected to a connecting block, the bottom of the connecting block is fixedly connected to a fixing rod, the bottom end of the fixing rod is fixedly connected to a cylinder, the output end of the cylinder is fixedly connected to a connecting rod one, the left end of the connecting rod one is fixedly connected to a connecting plate, the left side of the connecting plate is threadedly connected to a threaded rod, the left end of the threaded rod is threadedly connected to a connecting plate one, the outer wall of the connecting plate one is fixedly connected to a ejector pin, the inside of the movable mold is fixedly connected to a mold core, the outer wall of the mold core is slidably connected to the ejector pin, and the top of the movable mold is provided with a discharge port.

[0007] Through the above technical solution, the cylinder drives the connecting rod, the connecting rod drives the connecting plate, and the connecting plate drives the ejector pin, so that the ejector pin can slide inside the mold core.

[0008] As a further improvement of the above scheme, there are eight supporting legs, and the eight supporting legs are symmetrically arranged with respect to the center of the support table; there are two slide grooves, and the two slide grooves are symmetrically arranged with respect to the center of the support table; there are two sliders, and the two sliders are symmetrically arranged with respect to the center of the movable mold; there are two threaded rods, and the two threaded rods are obliquely symmetrically arranged with respect to the center of the connecting plate; there are four ejectors, and the four ejectors are symmetrically arranged with respect to the center of the movable mold.

[0009] As a further improvement of the above scheme, the moving mechanism includes an oil cylinder, the bottom of the oil cylinder is fixedly connected to the top of the support table, the output end of the oil cylinder is fixedly connected to connecting rod 2, the left end of connecting rod 2 is fixedly connected to connecting plate 2, the left side of connecting plate 1 and 2 is fixedly connected to connecting rod 3, the left end of connecting rod 3 is fixedly connected to the mold foot, the mold foot is fixedly connected to a limiting block, the movable mold is fixedly connected to the right side of the movable mold, the right side of the movable mold is fixedly connected to the ejector plate guide column, and a movable mold exhaust port is opened on the left side of the movable mold.

[0010] Through further improvement of the above solution, the oil cylinder drives the connecting rod, the connecting rod is fixedly connected to the mold foot, and the mold foot is fixedly connected to the movable mold, so that the oil cylinder drives the whole to slide.

[0011] As a further improvement of the above scheme, there are two connecting rods three, and the two connecting rods three are symmetrically arranged with respect to the center of the connecting plate two; there are two mold feet, and the two mold feet are symmetrically arranged with respect to the center of the movable mold; there are four ejector plate guide pins, and the four ejector plate guide pins are symmetrically arranged with respect to the center of the mold foot.

[0012] As a further improvement of the above scheme, the fixed mold mechanism includes a fixed mold support plate, the bottom of the fixed mold support plate is fixedly connected to the top of the support table, the right side of the fixed mold support plate is fixedly connected to the fixed mold, a feed port is provided on the fixed mold, the feed port passes through the left side of the fixed mold and extends to the interior of the fixed mold support plate, a mold cavity is provided on the inner wall of the fixed mold, the mold cavity is connected to the feed port, a guide column is fixedly connected to the right end of the fixed mold, and a fixed mold exhaust port is provided on the right side of the fixed mold.

[0013] As a further improvement of the above solution, there are four guide pillars, which are symmetrically arranged around the center of the fixed mold.

[0014] As a further improvement of the above scheme, the cooling mechanism includes a water inlet hole 1, a water inlet hole 1 is opened on the back of the movable mold, a water outlet hole 1 is opened on the bottom of the movable mold, the water inlet hole 1 is connected with the water outlet hole 1, a water inlet hole 2 is opened on the top of the movable mold, a water outlet hole 2 is opened on the front of the movable mold, the water inlet hole 2 is connected with the water outlet hole 2, and a guide hole is opened inside the movable mold.

[0015] As a further improvement of the above solution, there are four guide holes, which are symmetrically arranged around the center of the movable mold.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] The utility model pushes the connecting rod through the output end of the cylinder, the connecting rod is fixedly connected to the connecting plate, the connecting plate is threadedly connected to the connecting plate one through the threaded rod, and the ejector pin is fixedly connected to the connecting plate one. When the output end of the cylinder moves forward, it drives the above whole body to move, so that the ejector pin ejects the product, the product falls, and is collected through the discharge port.

[0018] The utility model pushes the connecting rod through the output end of the oil cylinder to make the whole movable mold move along the slide groove. When the movable mold and the fixed mold are completely closed together, the raw materials are injected into the mold through the feed port of the fixed mold. When the raw materials enter, the air inside is squeezed out, and the internal air is discharged through the exhaust ports of the movable mold and the fixed mold, so that the material completely fills the inside of the mold. After the filling is completed, the oil cylinder pulls the whole to move back. At the same time, water flows in through the water inlet and flows out from the water outlet. The mold temperature is lowered by the water flow, thereby achieving the effect of cooling the product and preventing mold sticking. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the demoulding mechanism structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the internal structure of the demoulding mechanism of the utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the mobile mechanism of the utility model;

[0023] Figure 5 This is a schematic diagram of the back structure of the movable mold of the utility model;

[0024] Figure 6 This is a schematic diagram of the fixed mold structure of the utility model;

[0025] Figure 7 This is a schematic diagram of the cooling mechanism structure of the utility model.

[0026] Description of main symbols:

[0027] 1. Demolding mechanism; 101. Support legs; 102. Support table; 103. Slide; 104. Slider; 105. Moving mold; 106. Connecting block; 107. Fixing rod; 108. Cylinder; 109. Connecting rod 1; 110. Connecting plate; 111. Threaded rod; 112. Connecting plate 1; 113. Ejector pin; 114. Mold core; 115. Discharge port; 2. Moving mechanism; 201. Cylinder; 202. Connecting rod 2; 203. Connecting plate 2; 204, connecting rod three; 205, mold foot; 206, limit block; 207, ejector plate guide pin; 208, movable mold exhaust port; 3, fixed mold mechanism; 301, fixed mold support plate; 302, fixed mold; 303, feed port; 304, mold cavity; 305, fixed mold exhaust port; 306, guide pin; 4, cooling mechanism; 401, water inlet hole one; 402, water outlet hole one; 403, water inlet hole two; 404, water outlet hole two; 405, guide hole. DETAILED DESCRIPTION

[0028] Below, the present invention is further described in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments. Example

[0029] Please combine Figure 1-7 A demoulding device for producing plastic pallets in this embodiment includes a demoulding mechanism 1, a moving mechanism 2, a fixed mold mechanism 3 and a cooling mechanism 4. The demoulding mechanism 1 is located inside the moving mechanism 2, the fixed mold mechanism 3 is located on the left side of the moving mechanism 2, and the cooling mechanism 4 is located inside the moving mechanism 2.

[0030] The demoulding mechanism 1 includes a supporting leg 101, the top of the supporting leg 101 is fixedly connected to a supporting table 102, the top of the supporting table 102 is provided with a slide groove 103, the slide groove 103 is slidably connected to a slider 104, the top of the slider 104 is fixedly connected to a movable mold 105, the top of the movable mold 105 is fixedly connected to a connecting block 106, the bottom of the connecting block 106 is fixedly connected to a fixing rod 107, the bottom end of the fixing rod 107 is fixedly connected to a cylinder 108, the output end of the cylinder 108 is fixedly connected to a connecting rod 109, the left end of the connecting rod 109 is fixedly connected to a connecting plate 110, the left side of the connecting plate 110 is threadedly connected to a threaded rod 111, the left end of the threaded rod 111 is threadedly connected to a connecting plate 112, the outer wall of the connecting plate 112 is fixedly connected to an ejector pin 113, the inside of the movable mold 105 is fixedly connected to a mold core 114, the outer wall of the mold core 114 is slidably connected to the ejector pin 113, and the top of the movable mold 105 is provided with a discharge port 115.

[0031] There are eight support legs 101, and the eight support legs 101 are symmetrically arranged around the support table 102. There are two slide grooves 103, and the two slide grooves 103 are symmetrically arranged around the support table 102. There are two sliders 104, and the two sliders 104 are symmetrically arranged around the movable mold 105. There are two threaded rods 111, and the two threaded rods 111 are obliquely symmetrically arranged around the connecting plate 112. There are four ejector pins 113, and the four ejector pins 113 are symmetrically arranged around the movable mold 105.

[0032] The moving mechanism 2 includes a cylinder 201, the bottom of the cylinder 201 is fixedly connected to the top of the support table 102, the output end of the cylinder 201 is fixedly connected to a connecting rod 202, the left end of the connecting rod 202 is fixedly connected to a connecting plate 203, the left side of the connecting plate 203 is fixedly connected to a connecting rod 3 204, the left end of the connecting rod 3 204 is fixedly connected to a mold foot 205, the mold foot 205 is fixedly connected to a limiting block 206 inside, the movable mold 105 is fixedly connected to the right side of the movable mold 105, the right side of the movable mold 105 is fixedly connected to a pin plate guide column 207, and a movable mold exhaust port 208 is opened on the left side of the movable mold 105.

[0033] There are two connecting rods three 204, and the two connecting rods three 204 are symmetrically arranged with the center of the connecting plate one 203; there are two mold feet 205, and the two mold feet 205 are symmetrically arranged with the center of the movable mold 105; there are four ejector plate guide pillars 207, and the four ejector plate guide pillars 207 are symmetrically arranged with the center of the mold foot 205.

[0034] The fixed mold mechanism 3 includes a fixed mold support plate 301, the bottom of the fixed mold support plate 301 is fixedly connected to the top of the support table 102, and the right side of the fixed mold support plate 301 is fixedly connected to the fixed mold 302. A feed port 303 is provided on the fixed mold 302, and the feed port 303 passes through the left side of the fixed mold 302 and extends to the interior of the fixed mold support plate 301. A mold cavity 304 is provided on the inner wall of the fixed mold 302, and the mold cavity 304 is connected to the feed port 303. A guide column 306 is fixedly connected to the right end of the fixed mold 302, and a fixed mold exhaust port 305 is provided on the right side of the fixed mold 302.

[0035] There are four guide posts 306 , and the four guide posts 306 are symmetrically arranged around the center of the fixed mold 302 .

[0036] The cooling mechanism 4 includes a water inlet hole 401, a water inlet hole 401 is opened on the back of the movable mold 105, a water outlet hole 402 is opened at the bottom of the movable mold 105, the water inlet hole 401 is connected to the water outlet hole 402, a water inlet hole 403 is opened on the top of the movable mold 105, a water outlet hole 404 is opened on the front of the movable mold 105, the water inlet hole 403 is connected to the water outlet hole 404, and a guide hole 405 is opened inside the movable mold 105.

[0037] There are four guide holes 405 , and the four guide holes 405 are symmetrically arranged around the center of the movable mold 105 .

[0038] The implementation principle of a demoulding device for producing plastic pallets in the embodiment of the present application is as follows: the support legs 101 are fixedly connected to the support table 102, a slide groove 103 is provided inside the support table 102, and the oil cylinder 201 is fixedly connected to the support table 102, the output end of the oil cylinder 201 is fixedly connected to the connecting rod 202, the connecting rod 202 is fixedly connected to the connecting plate 203, the connecting plate 203 is fixedly connected to the connecting rod 3 204, the connecting rod 3 204 is fixedly connected to the mold foot 205, the mold foot 205 is fixedly connected to the movable mold 105, and the bottom of the movable mold 105 is fixedly connected to Slider 104, when the output end of the oil cylinder 201 moves forward, the slider 104 and the slide groove 103 slide, driving the above whole to move. When the movable mold 105 and the fixed mold 302 are tightly closed, in order to ensure that the mold does not dislocate, the guide column 306 is slidably connected with the guide hole 405. The raw material passes through the fixed mold support plate 301 and the fixed mold 302 to reach the feed port 303. When the raw material enters the mold cavity 304, the internal air is discharged through the movable mold exhaust port 208 and the fixed mold exhaust port 305. When the raw material completely fills the mold cavity 304, the oil cylinder 201 is pulled back to complete the reset, and at the same time, water flows in through the water inlet hole 1 401 and the water inlet hole 2 403 respectively, and is discharged from the water outlet hole 1 402 and the water outlet hole 2 404 to cool the product and prevent the product from sticking to the mold. The movable mold 105 is fixedly connected to the connecting block 106, the connecting block 106 is fixedly connected to the fixing rod 107, the fixing rod 107 is fixedly connected to the cylinder 108, the output end of the cylinder 108 is fixedly connected to the connecting rod 109, the connecting rod 109 is fixedly connected to the connecting plate 110, and the connecting plate 110 and the connecting plate 112 are connected by the threaded rod 111 Threaded connection, connecting plate 112 is slidably connected to the ejector plate guide column 207, connecting plate 112 is fixedly connected to the ejector pin 113, and the movable mold 105 is fixedly connected to the mold core 114. The ejector pin 113 passes through the movable mold 105 and is slidably connected to the mold core 114. When the cylinder 108 moves forward, it drives the above as a whole to move forward, thereby ejecting the product and collecting it through the discharge port 115. The cylinder 108 pulls back the ejector pin 113 to complete the reset. At the same time, the connecting plate 112 contacts the set limit block 206, so that the ejector pin 113 is flush with the mold core 114.

[0039] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. A demoulding device for producing plastic pallets, characterized by: It comprises a demoulding mechanism (1), a moving mechanism (2), a fixed mold mechanism (3) and a cooling mechanism (4), wherein the demoulding mechanism (1) is located inside the moving mechanism (2), the fixed mold mechanism (3) is located on the left side of the moving mechanism (2), and the cooling mechanism (4) is located inside the moving mechanism (2); The demoulding mechanism (1) comprises a supporting leg (101), the top of the supporting leg (101) is fixedly connected to a supporting table (102), the top of the supporting table (102) is provided with a slide groove (103), the slide groove (103) is slidably connected to a slider (104), the top of the slider (104) is fixedly connected to a movable mold (105), the top of the movable mold (105) is fixedly connected to a connecting block (106), the bottom of the connecting block (106) is fixedly connected to a fixing rod (107), the bottom end of the fixing rod (107) is fixedly connected to a cylinder (108), and the cylinder (108) is fixedly connected to the movable mold (105). 08) The output end is fixedly connected to a connecting rod (109), the left end of the connecting rod (109) is fixedly connected to a connecting plate (110), the left side of the connecting plate (110) is threadedly connected to a threaded rod (111), the left end of the threaded rod (111) is threadedly connected to a connecting plate (112), the outer wall of the connecting plate (112) is fixedly connected to a ejector pin (113), the interior of the movable mold (105) is fixedly connected to a mold core (114), the outer wall of the mold core (114) is slidably connected to an ejector pin (113), and a discharge port (115) is opened at the top of the movable mold (105).

2. A demoulding device for producing plastic pallets according to claim 1, characterized in that: There are eight support legs (101), and the eight support legs (101) are symmetrically arranged around the support table (102). There are two slide grooves (103), and the two slide grooves (103) are symmetrically arranged around the support table (102). There are two sliders (104), and the two sliders (104) are symmetrically arranged around the movable mold (105). There are two threaded rods (111), and the two threaded rods (111) are obliquely symmetrically arranged around the connecting plate (112). There are four ejector pins (113), and the four ejector pins (113) are symmetrically arranged around the movable mold (105).

3. A demoulding device for producing plastic pallets according to claim 1, characterized in that: The moving mechanism (2) comprises an oil cylinder (201), the bottom of the oil cylinder (201) is fixedly connected to the top of the support table (102), the output end of the oil cylinder (201) is fixedly connected to a second connecting rod (202), the left end of the second connecting rod (202) is fixedly connected to a second connecting plate (203), the left side of the second connecting plate (203) is fixedly connected to a third connecting rod (204), the left end of the third connecting rod (204) is fixedly connected to a mold foot (205), the mold foot (205) is fixedly connected to a limiting block (206) inside, the movable mold (105) is fixedly connected to the right side of the movable mold (105), the right side of the movable mold (105) is fixedly connected to a pin plate guide column (207), and a movable mold exhaust port (208) is provided on the left side of the movable mold (105).

4. A demoulding device for producing plastic pallets according to claim 3, characterized in that: There are two connecting rods three (204), and the two connecting rods three (204) are symmetrically arranged around the center of the connecting plate two (203). There are two mold feet (205), and the two mold feet (205) are symmetrically arranged around the center of the movable mold (105). There are four ejector plate guide pillars (207), and the four ejector plate guide pillars (207) are symmetrically arranged around the center of the mold foot (205).

5. The demoulding device for producing plastic pallets according to claim 1, characterized in that: The fixed mold mechanism (3) comprises a fixed mold support plate (301), the bottom of the fixed mold support plate (301) is fixedly connected to the top of the support table (102), the right side of the fixed mold support plate (301) is fixedly connected to the fixed mold (302), a feed port (303) is provided on the fixed mold (302), the feed port (303) passes through the left side of the fixed mold (302) and extends into the interior of the fixed mold support plate (301), a mold cavity (304) is provided on the inner wall of the fixed mold (302), the mold cavity (304) is communicated with the feed port (303), a guide column (306) is fixedly connected to the right end of the fixed mold (302), and a fixed mold exhaust port (305) is provided on the right side of the fixed mold (302).

6. A demoulding device for producing plastic pallets according to claim 5, characterized in that: There are four guide pillars (306), and the four guide pillars (306) are symmetrically arranged around the center of the fixed mold (302).

7. A demoulding device for producing plastic pallets according to claim 1, characterized in that: The cooling mechanism (4) includes a first water inlet hole (401), a first water inlet hole (401) is provided on the back of the movable mold (105), a first water outlet hole (402) is provided on the bottom of the movable mold (105), the first water inlet hole (401) is communicated with the first water outlet hole (402), a second water inlet hole (403) is provided on the top of the movable mold (105), a second water outlet hole (404) is provided on the front of the movable mold (105), the second water inlet hole (403) is communicated with the second water outlet hole (404), and a guide hole (405) is provided inside the movable mold (105).

8. A demoulding device for producing plastic pallets according to claim 7, characterized in that: There are four guide holes (405), and the four guide holes (405) are symmetrically arranged around the center of the movable mold (105).