A raw material pretreatment device for plastic packaging box production

Abstract

The application relates to the technical field of plastic packaging boxes, and discloses a raw material pretreatment device for plastic packaging box production, which comprises a shell, a feeding hopper is communicated with the side of the shell, an L-shaped first supporting plate is fixedly installed in the shell, a second supporting plate is fixedly connected with the horizontal section of the first supporting plate, a baffle is fixedly installed on the vertical section of the first supporting plate, the baffle and the first supporting plate form a cavity, a through hole is arranged in the vertical section of the first supporting plate and communicated with the cavity, a moving plate is slidingly installed on the vertical section of the first supporting plate, the moving plate penetrates through the first supporting plate and is located in the cavity, a push plate is fixedly installed on the end of the moving plate located outside the cavity, and a second electric telescopic rod for driving the moving plate to move is fixedly installed on the vertical section of the first supporting plate.

Description

Technical Field

[0001] This invention relates to the field of plastic packaging box technology, and more specifically to a raw material pretreatment device for the production of plastic packaging boxes. Background Technology

[0002] The raw materials for producing plastic packaging boxes are generally plastic granules and plastic sheets. Before being processed into plastic packaging boxes, the plastic sheets need to be cleaned to remove surface impurities and oil. Currently, the most common methods for cleaning plastic sheets are rinsing and soaking. These methods involve placing piles of plastic sheets into a pool of water or immersing them in a filter for soaking and rinsing. However, in practice, plastic sheets are often stacked together, and they tend to stick together after becoming wet. This prevents the rinsing and soaking methods from fully contacting the entire surface of the sheets, thus affecting cleaning efficiency and quality. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing an apparatus for processing raw materials of plastic packaging boxes, thereby improving the cleaning effect.

[0004] The objective of this invention can be achieved through the following technical solutions: A raw material pretreatment device for producing plastic packaging boxes includes a shell with a feeding hopper connected to its side. An L-shaped first support plate is fixedly installed inside the shell. A second support plate is fixedly connected to the horizontal section of the first support plate. A baffle is fixedly installed on the vertical section of the first support plate, and the baffle and the first support plate form a cavity. A through hole communicating with the cavity is opened on the vertical section of the first support plate. A movable plate is slidably installed on the vertical section of the first support plate, and the movable plate passes through the first support plate. A part of the movable plate is located inside the cavity. A push plate is fixedly installed on the end of the movable plate outside the cavity. A second electric telescopic rod that drives the movable plate to move is fixedly installed on the vertical section of the first support plate. An installation plate is fixedly installed inside the housing, and a first electric telescopic rod is fixedly installed on the installation plate. The output end of the first electric telescopic rod is provided with a limiting plate that works in conjunction with the first support plate. Two sets of first and second cleaning conveyor belts are rotatably installed inside the housing, located above the second support plate. The first and second cleaning conveyor belts work together to transport the plastic sheets falling from the first support plate. A chain plate conveyor belt is provided inside the housing at the discharge end of the first cleaning conveyor belt. The chain plate conveyor belt is at an angle to the horizontal plane and is used to transport the cleaned plastic sheets to the outside of the housing. A third support plate is fixedly installed inside the housing. The end of the second support plate away from the first support plate is connected to a return pipe. The output end of the return pipe is located between the third support plate and the first support plate. A water pump is fixedly installed inside the housing between the third support plate and the first support plate. The water outlet pipe of the water pump passes through the first support plate.

[0005] As a further aspect of the present invention: the upper surface of the pusher plate is lower than the upper surface of the horizontal section of the first support plate.

[0006] As a further aspect of the present invention: the first electric telescopic rod is parallel to the horizontal section of the first support plate, and a U-shaped mounting bracket is fixedly installed at the output end of the first electric telescopic rod. A sliding plate is slidably installed inside the mounting bracket, and a screw that drives the sliding plate to move up and down is threadedly connected to the mounting bracket. The sliding plate is connected to a limiting plate, and the limiting plate has an L-shaped structure.

[0007] As a further aspect of the present invention: the first cleaning conveyor belt and the second cleaning conveyor belt are both distributed along the horizontal direction, the upper surface of the first cleaning conveyor belt is lower than the upper surface of the horizontal section of the first support plate, and a gap is provided between the upper surface of the first cleaning conveyor belt and the lower surface of the second cleaning conveyor belt.

[0008] As a further aspect of the present invention: a guide plate is fixedly installed at the end of the horizontal section of the first support plate, the guide plate is at an angle to the horizontal plane, and the end of the guide plate away from the first support plate is used in conjunction with the first cleaning conveyor belt.

[0009] As a further aspect of the present invention: a collection filter box is slidably installed inside the housing, the collection filter box penetrates the side wall of the housing, the collection filter box is located at the outlet end of the return pipe, and the bottom of the collection filter box is a filter plate.

[0010] As a further embodiment of the present invention: multiple sets of third electric telescopic rods are fixedly installed at the bottom of the housing, and a base plate is fixedly installed at the output end of the third electric telescopic rod. Two sets of spaced grid plates are fixedly connected to the base plate through a connecting plate.

[0011] As a further aspect of the present invention: a dispersion cavity is provided in the bottom plate, and multiple sets of drainage holes communicating with the dispersion cavity are provided on the upper surface of the bottom plate, and the dispersion cavity is connected to the water outlet pipe of the water pump.

[0012] The beneficial effects of this invention are: (1) In this invention, the separation and single-layer distribution of plastic sheets are achieved by setting the gap between the limiting plate and the first support plate and the overflow of the cleaning liquid, avoiding adhesion between plastic sheets, ensuring that the plastic sheets can move to the first cleaning conveyor belt in a single layer, and then the plastic sheets will be rubbed and cleaned by the relative sliding between the plastic sheets and the second cleaning conveyor belt and the first cleaning conveyor belt, thus achieving comprehensive rubbing cleaning of the plastic sheets and avoiding cleaning dead corners. At the same time, the plastic sheets are soaked in the cleaning liquid, and after rubbing cleaning, the cleaning liquid can wash away the impurities from the plastic sheets, improving the cleaning effect of the plastic sheets and improving the quality of the subsequent plastic packaging boxes.

[0013] (2) In this invention, when the push plate moves, it can push the plastic sheet in the cleaning liquid that is not in contact with the limiting plate to move away from the first support plate, thereby avoiding the accumulation and squeezing of plastic sheet at the first support plate, avoiding the generation of large pressure on the plastic sheet attached to the limiting plate, ensuring that the plastic sheet attached to the limiting plate can smoothly enter the gap and move, avoiding blockage at the gap, and ensuring the continuous separation and distribution of the plastic sheet.

[0014] (3) In this invention, the plastic sheets on the side of the first support plate are separated by the grid plate to avoid a large number of plastic sheets accumulating on the top of the liquid surface, further reducing the crowding and accumulation of plastic sheets on the top of the liquid surface, improving the smoothness of the plastic sheets passing through the gaps, and at the same time, the cleaning liquid flows out through multiple sets of drainage holes. The cleaning liquid entering the side area of ​​the first support plate is dispersed by multiple sets of drainage holes, the upper grid plate and the plastic sheets, so that the cleaning liquid can be replenished stably, avoiding large fluctuations in the liquid surface, ensuring the stability of the liquid surface, and further improving the smoothness of the plastic sheets passing through the gaps. Attached Figure Description

[0015] The invention will now be further described with reference to the accompanying drawings.

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0017] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0018] Figure 3 This is a schematic diagram of the limiting plate structure in this invention.

[0019] Figure 4 This is a schematic diagram of the push plate in this invention.

[0020] Figure 5 This is a schematic diagram of the structure of the base plate in this invention.

[0021] Figure 6 yes Figure 2 Enlarged schematic diagram of point A1 in the middle.

[0022] Figure 7 yes Figure 2 Enlarged diagram of point A2 in the middle.

[0023] In the diagram: 1. Shell; 2. First support plate; 3. Mounting plate; 4. First electric telescopic rod; 5. Mounting frame; 6. Slide plate; 7. Screw; 8. Limiting plate; 9. Baffle; 10. Second electric telescopic rod; 11. Moving plate; 12. Push plate; 13. Guide plate; 14. Second support plate; 15. First cleaning conveyor belt; 16. Second cleaning conveyor belt; 17. Return pipe; 18. Chain plate conveyor belt; 19. Third support plate; 20. Collection filter box; 21. Third electric telescopic rod; 22. Base plate; 23. Dispersion chamber; 24. Grating plate; 25. Connecting plate; 26. Feed hopper; 27. Water pump; 28. Drain hole. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Please see Figures 1-7 As shown, the present invention is a raw material pretreatment device for the production of plastic packaging boxes, including a shell 1. A feeding hopper 26 is connected to the side of the shell 1. An L-shaped first support plate 2 is fixedly installed inside the shell 1. A second support plate 14 is fixedly connected to the horizontal section of the first support plate 2. A baffle 9 is fixedly installed on the vertical section of the first support plate 2. The baffle 9 and the first support plate 2 form a cavity. A through hole communicating with the cavity is opened on the vertical section of the first support plate 2. A movable plate 11 is slidably installed on the vertical section of the first support plate 2. The movable plate 11 passes through the first support plate 2. A part of the movable plate 11 is located in the cavity. A push plate 12 is fixedly installed on the end of the movable plate 11 outside the cavity. There is a height difference between the upper surface of the push plate 12 and the upper surface of the horizontal section of the first support plate 2. The upper surface of the push plate 12 is lower. A second electric telescopic rod 10 that drives the movable plate 11 to move is fixedly installed on the vertical section of the first support plate 2.

[0026] An installation plate 3 is fixedly installed inside the housing 1. A first electric telescopic rod 4 is fixedly installed on the installation plate 3. A limiting plate 8 that works with the first support plate 2 is provided at the output end of the first electric telescopic rod 4. The first electric telescopic rod 4 is parallel to the horizontal section of the first support plate 2. A U-shaped installation frame 5 is fixedly installed at the output end of the first electric telescopic rod 4. A sliding plate 6 is slidably installed inside the installation frame 5. A screw 7 that drives the sliding plate 6 to move up and down is threadedly connected to the installation frame 5. The sliding plate 6 is connected to the limiting plate 8, which has an L-shaped structure. Two sets of first cleaning conveyor belts 15 and second cleaning conveyor belts 15 located above the second support plate 14 are rotatably installed inside the housing 1. The conveyor belt 16, the first cleaning conveyor belt 15 and the second cleaning conveyor belt 16 cooperate to transport the plastic sheets falling from the first support plate 2. The first cleaning conveyor belt 15 and the second cleaning conveyor belt 16 are both distributed in the horizontal direction. The height of the upper surface of the first cleaning conveyor belt 15 is lower than the height of the upper surface of the horizontal section of the first support plate 2. A gap is provided between the upper surface of the first cleaning conveyor belt 15 and the lower surface of the second cleaning conveyor belt 16. A chain plate conveyor belt 18 is provided inside the housing 1 at the discharge end of the first cleaning conveyor belt 15. The chain plate conveyor belt 18 is at an angle to the horizontal plane and is used to transport the cleaned plastic sheets to the outside of the housing 1.

[0027] A third support plate 19 is fixedly installed inside the housing 1. A return pipe 17 is connected to the end of the second support plate 14 away from the first support plate 2. The output end of the return pipe 17 is located between the third support plate 19 and the first support plate 2. A water pump 27 is fixedly installed inside the housing 1 between the third support plate 19 and the first support plate 2. The outlet pipe of the water pump 27 passes through the first support plate 2.

[0028] In practical application, a set amount of cleaning fluid is added to the housing 1 so that the fluid level exceeds the set height of the upper surface of the first support plate 2. The cleaning fluid can pass over the first support plate 2 and flow to the second support plate 14. The fluid level on the second support plate 14 is higher than the lower part of the second cleaning conveyor belt 16. Then, the cleaning fluid flows through the return pipe 17 to the area between the first support plate 2 and the third support plate 19. Then, the return cleaning fluid is transported to the side of the first support plate 2 by the water pump 27. The cleaning fluid is replenished to the area between the first support plate 2 and the third support plate 19 by an external cleaning fluid adding device, thereby maintaining a stable cleaning fluid level.

[0029] Based on the thickness of the plastic sheet, the screw 7 drives the slide plate 6 downwards, adjusting the height difference between the limiting plate 8 and the upper surface of the horizontal section of the first support plate 2. This ensures that only a single set of plastic sheets can pass through the gap between the first support plate 2 and the limiting plate 8. Due to the presence of the limiting plate 8, the cleaning fluid can only pass through the gap between the first support plate 2 and the limiting plate 8. The plastic sheet to be cleaned is added into the housing 1 through the feed hopper 26. The plastic sheet falls onto the side area of ​​the first support plate 2. In the cleaning fluid, some of the plastic sheet floats on the surface, while some is pressed below the surface. The cleaning fluid level on the side of the first support plate 2 will be higher than that of the limiting plate 8. On the lower surface, because the end of the limiting plate 8 away from the mounting plate 3 has an upwardly bent portion, the cleaning fluid will not cross the limiting plate 8. The cleaning fluid flows from the gap between the limiting plate 8 and the upper surface of the first support plate 2 and fills the gap. Due to the circulating flow of the cleaning fluid, the plastic sheet will move towards the first support plate 2 under the action of the cleaning fluid. At this time, some of the plastic sheet will move against the bottom surface of the limiting plate 8. When the plastic sheet moves to the gap, only the plastic sheet against the lower surface of the limiting plate 8 can enter the gap. The plastic sheet below will contact the first support plate 2 and be blocked. Thus, the plastic sheet can pass through the gap piece by piece. Driven by the cleaning fluid, the plastic sheet moves onto the first cleaning conveyor belt 15. The first cleaning conveyor belt 15 then moves the plastic sheet into the area where the second cleaning conveyor belt 16 is located. Because there is a small gap between the upper surface of the first cleaning conveyor belt 15 and the lower surface of the second cleaning conveyor belt 16, the plastic sheet will simultaneously contact both the first and second cleaning conveyor belts 15 and 16. Since the first and second cleaning conveyor belts 15 and 16 rotate in different directions and at different speeds, the plastic sheet will slide relative to both belts under the action of friction. The plastic sheet remains in motion, and the separation and single-layer distribution of the plastic sheet are achieved through the gap setting between the limiting plate 8 and the first support plate 2 and the overflow of the cleaning fluid, avoiding adhesion between the plastic sheets and ensuring that the plastic sheet can move onto the first cleaning conveyor belt 15 in a single layer. Then, the surface of the plastic sheet is rubbed and cleaned by the relative sliding between the plastic sheet and the second cleaning conveyor belt 16 and the first cleaning conveyor belt 15, achieving comprehensive friction cleaning of the plastic sheet and avoiding cleaning dead corners. At the same time, the plastic sheet is soaked in the cleaning fluid, and after friction cleaning, the cleaning fluid can wash away the impurities from the plastic sheet, improving the cleaning effect of the plastic sheet and improving the quality of subsequent plastic packaging boxes.

[0030] During cleaning, the first electric telescopic rod 4 drives the mounting frame 5 to move back and forth, and the mounting frame 5 drives the limiting plate 8 to move. The second electric telescopic rod 10 drives the moving plate 11 and the push plate 12 to move back and forth. The limiting plate 8 and the push plate 12 do not move at the same time. The push plate 12 is located on the feeding side of the first support plate 2. Its reciprocating movement can push the plastic sheets near the first support plate 2 that are not in contact with the limiting plate 8 away from the first support plate 2, preventing the plastic sheets from accumulating and being squeezed at the entrance of the limiting plate 8. This ensures that the plastic sheets attached to the limiting plate 8 can smoothly enter the gap, avoid blockage at the gap, and ensure the continuous separation and distribution of the plastic sheets. When the limiting plate 8 moves away from the mounting plate 3, the inclined structure at the end of the limiting plate 8 can press the plastic sheets at its front end down to the bottom of the limiting plate 8, so that all the plastic sheets can move to the bottom of the limiting plate 8, preventing the plastic sheets from being unable to pass through the gap between the limiting plate 8 and the first support plate 2.

[0031] Please see Figure 1 , Figure 2 As shown, the present invention is a raw material pretreatment device for the production of plastic packaging boxes. A guide plate 13 is fixedly installed at the end of the horizontal section of the first support plate 2. The guide plate 13 is set at an angle with the horizontal plane. The end of the guide plate 13 away from the first support plate 2 is used in conjunction with the first cleaning conveyor belt 15.

[0032] In practical application, the guide plate 13 guides the plastic sheet moving on the first support plate 2, so that the plastic sheet can move more smoothly onto the first cleaning conveyor belt 15.

[0033] Please see Figure 1 , Figure 2 As shown, the present invention is a raw material pretreatment device for the production of plastic packaging boxes. A collection filter box 20 is slidably installed inside the housing 1. The collection filter box 20 penetrates the side wall of the housing 1 and is located at the water outlet end of the return pipe 17. The bottom of the collection filter box 20 is a filter plate.

[0034] In practical application, the cleaning fluid flowing out of the return pipe 17 falls into the collection filter box 20 and is filtered through the collection filter box 20. Impurities are collected in the collection filter box 20. After long-term use, the collection filter box 20 can be pulled out of the housing 1 for cleaning, and then reset.

[0035] Please see Figure 1 , Figure 2 , Figure 5 , Figure 7 As shown, the present invention is a raw material pretreatment device for the production of plastic packaging boxes. Multiple sets of third electric telescopic rods 21 are fixedly installed at the bottom of the housing 1. A base plate 22 is fixedly installed at the output end of the third electric telescopic rods 21. Two sets of spaced grid plates 24 are fixedly connected to the base plate 22 through a connecting plate 25.

[0036] Specifically, a dispersion chamber 23 is provided inside the base plate 22, and multiple sets of drainage holes 28 communicating with the dispersion chamber 23 are provided on the upper surface of the base plate 22. The dispersion chamber 23 is connected to the water outlet pipe of the water pump 27.

[0037] In practical application, the third electric telescopic rod 21 is activated, causing the base plate 22 to move upward, so that both sets of grid plates 24 are higher than the discharge port of the feed hopper 26. The first batch of plastic sheets is poured into the housing 1 through the feed hopper 26, and the plastic sheets float on the surface of the cleaning liquid. The third electric telescopic rod 21 is controlled to move the base plate 22 downward. When the lowest set of grid plates 24 contacts the liquid surface and continues to descend, the grid plates 24 press the first batch of plastic sheets on the liquid surface into the cleaning liquid. The base plate 22 stops descending, and the second batch of plastic sheets is added. At this time, the second batch of plastic sheets still floats on the liquid surface (the first batch of plastic sheets that have been pressed in do not interfere). The base plate 22 continues to move downward, and the upper set of grid plates 24 (originally located above the liquid surface) enters the liquid surface, pressing the second batch of plastic sheets into the cleaning liquid. The above steps are repeated until all plastic sheets are pressed below the liquid surface. Through the above layered operation, a large number of plastic sheets are avoided from accumulating at the top of the liquid surface at the same time, which is conducive to the orderly flow of plastic sheets into the gap of the limiting plate 8.

[0038] The water pump 27 delivers cleaning fluid to the dispersion chamber 23. The cleaning fluid flows out through multiple sets of drain holes 28. The cleaning fluid entering the side area of ​​the first support plate 2 is dispersed by the multiple sets of drain holes 28, the upper grid plate 24, and the plastic sheet, so that the cleaning fluid can be replenished stably, avoiding large fluctuations in the liquid surface, ensuring the stability of the liquid surface, and further improving the smoothness of the plastic sheet passing through the gap.

Claims

1. A raw material pretreatment device for the production of plastic packaging boxes, comprising a shell (1), wherein a feed hopper (26) is connected to the side of the shell (1), characterized in that, The housing (1) is fixedly installed with an L-shaped first support plate (2). The horizontal section of the first support plate (2) is fixedly connected with a second support plate (14). The vertical section of the first support plate (2) is fixedly installed with a baffle (9). The baffle (9) and the first support plate (2) form a cavity. The vertical section of the first support plate (2) is slidably installed with a movable plate (11). The movable plate (11) passes through the first support plate (2). A part of the movable plate (11) is located in the cavity. The end of the movable plate (11) located outside the cavity is fixedly installed with a push plate (12). The vertical section of the first support plate (2) is fixedly installed with a second electric telescopic rod (10) that drives the movable plate (11) to move. An installation plate (3) is fixedly installed inside the housing (1). A first electric telescopic rod (4) is fixedly installed on the installation plate (3). A limiting plate (8) is provided at the output end of the first electric telescopic rod (4) to cooperate with the first support plate (2). Two sets of first cleaning conveyor belts (15) and second cleaning conveyor belts (16) located above the second support plate (14) are rotatably installed inside the housing (1). The first cleaning conveyor belt (15) and the second cleaning conveyor belt (16) cooperate to transport the plastic sheet falling from the first support plate (2). A chain plate conveyor belt (18) is provided at the discharge end of the first cleaning conveyor belt (15) inside the housing (1). The chain plate conveyor belt (18) is set at an angle with the horizontal plane and is used to transport the cleaned plastic sheet to the outside of the housing (1). A third support plate (19) is fixedly installed inside the housing (1). A return pipe (17) is connected to the end of the second support plate (14) away from the first support plate (2). The output end of the return pipe (17) is located between the third support plate (19) and the first support plate (2). A water pump (27) is fixedly installed inside the housing (1) between the third support plate (19) and the first support plate (2). The outlet pipe of the water pump (27) passes through the first support plate (2).

2. The raw material pretreatment device for plastic packaging box production according to claim 1, characterized in that, The upper surface of the push plate (12) is lower than the upper surface of the horizontal section of the first support plate (2).

3. The raw material pretreatment device for plastic packaging box production according to claim 1, characterized in that, The first electric telescopic rod (4) is parallel to the horizontal section of the first support plate (2). A U-shaped mounting bracket (5) is fixedly installed at the output end of the first electric telescopic rod (4). A sliding plate (6) is slidably installed inside the mounting bracket (5). A screw (7) that drives the sliding plate (6) to move up and down is threadedly connected to the mounting bracket (5). The sliding plate (6) is connected to the limiting plate (8). The limiting plate (8) has an L-shaped structure.

4. The raw material pretreatment device for plastic packaging box production according to claim 1, characterized in that, The first cleaning conveyor belt (15) and the second cleaning conveyor belt (16) are both distributed along the horizontal direction. The height of the upper surface of the first cleaning conveyor belt (15) is lower than the height of the upper surface of the horizontal section of the first support plate (2). There is a gap between the upper surface of the first cleaning conveyor belt (15) and the lower surface of the second cleaning conveyor belt (16).

5. The raw material pretreatment device for plastic packaging box production according to claim 4, characterized in that, A guide plate (13) is fixedly installed at the end of the horizontal section of the first support plate (2). The guide plate (13) is set at an angle with the horizontal plane. The end of the guide plate (13) away from the first support plate (2) is used in conjunction with the first cleaning conveyor belt (15).

6. The raw material pretreatment device for plastic packaging box production according to claim 1, characterized in that, A collection filter box (20) is slidably installed inside the housing (1). The collection filter box (20) penetrates the side wall of the housing (1). The collection filter box (20) is located at the water outlet end of the return pipe (17). The bottom of the collection filter box (20) is a filter plate.

7. The raw material pretreatment device for plastic packaging box production according to claim 1, characterized in that, Multiple sets of third electric telescopic rods (21) are fixedly installed at the bottom of the housing (1). A base plate (22) is fixedly installed at the output end of the third electric telescopic rod (21). Two sets of spaced grid plates (24) are fixedly connected to the base plate (22) through a connecting plate (25).

8. The raw material pretreatment device for plastic packaging box production according to claim 7, characterized in that, The base plate (22) has a dispersion chamber (23) inside, and the upper surface of the base plate (22) has multiple sets of drainage holes (28) that communicate with the dispersion chamber (23). The dispersion chamber (23) is connected to the outlet pipe of the water pump (27).

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