Plastic sheet forming device

Abstract

The utility model relates to the technical field of plastic sheet production, in particular to a plastic sheet forming device which comprises a machine frame, a cover plate and a cooling assembly, the machine frame is connected with the cover plate, a forming roller set is arranged on the machine frame, the cooling assembly is connected to the machine frame and comprises a spraying assembly and an adjusting assembly, the spraying assembly comprises a flow dividing pipe and a spraying head, and the adjusting assembly is connected to the machine frame. And the two flow dividing pipes are symmetrically arranged, a plurality of spraying heads are connected to the flow dividing pipes, and the adjusting assembly comprises a rotating shaft and an adjusting handle. According to the plastic sheet cooling device, the flow dividing pipes and the spraying heads are arranged at the upper end and the lower end of the plastic sheet, so that the two sides of the plastic sheet can be synchronously cooled to prevent warping and layering caused by low cooling speed of one side of the plastic sheet, and meanwhile, the angles of the flow dividing pipes and the spraying heads can be adjusted when the rotating shaft is driven to rotate through the adjusting handle; and the water mist sprayed by the spraying head has an angle, so that the water mist is more adaptive to plastic sheets with different thicknesses.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of plastic sheet production, and particularly relates to a plastic sheet forming device. BACKGROUND

[0002] The plastic sheet refers to a material for producing hot forming products such as disposable plastic cups, plates, bowls, dishes, boxes, etc., and is widely used in the packaging of food, vegetables, fruits, beverages, dairy products, industrial parts, etc. The plastic sheet is usually produced by high-temperature extrusion during the production process.

[0003] A plastic sheet extrusion forming cooling machine is disclosed in Chinese Patent No. CN216914788U, which relates to the technical field of plastic sheet forming and includes a overall support frame, a molding groove is formed in the center of the top of the overall support frame, a high shelf plate is arranged on the top of the overall support frame near the edge of the front surface and the rear surface, a cooling mechanism is arranged between the tops of the two high shelf plates, and the cooling mechanism includes a cover cap connected to the bottom of the cover cap and the tops of the two high shelf plates by screws. The utility model sprays water mist from the spray head to cool the plastic sheet, realizes rapid cooling of the plastic sheet through water mist, shortens the conveying distance of the plastic sheet while rapidly cooling the plastic sheet, reduces the occupied space of the conveying mechanism, improves the space utilization rate, and increases the practicality of the device.

[0004] However, in the above technical solution, only multiple spray heads are arranged above the conveying chain to cool the plastic sheet, but the plastic sheet is divided into thick and thin sheets, and for thick sheets, the cooling speed of one side is slower than the other side, which may cause warping and layering, affecting the quality of the sheet. UTILITY MODEL CONTENTS

[0005] The utility model aims at the problems in the background art and provides a plastic sheet forming device.

[0006] The technical scheme of the utility model is as follows: a plastic sheet forming device includes a rack connected with a cover plate, a forming roller group is arranged on the rack, a cooling assembly is connected to the rack, the cooling assembly includes a spraying assembly and an adjusting assembly, the spraying assembly includes a shunt pipe and a spray head, two shunt pipes are symmetrically arranged, a plurality of spray heads are connected to each shunt pipe, the adjusting assembly includes a rotating shaft and an adjusting handle, the number of rotating shafts corresponds to the number of shunt pipes, the rotating shafts are rotatably connected to the rack, the rotating shafts are connected to the shunt pipes, and the adjusting handle is installed at any end of the rotating shaft; in the use state of the cooling assembly, the adjusting handle drives the rotating shafts and the shunt pipes to rotate, the spray angle of the spray heads on the shunt pipes changes to adapt to plastic sheets of different thicknesses.

[0007] Preferably, the spraying assembly further comprises a connecting pipe, two ends of the connecting pipe are connected with the two shunt pipes respectively; a water tank connected with the rack, a submersible pump connected in the water tank, the water outlet end of the submersible pump is connected with the connecting pipe; a collecting tank connected with the rack, a water outlet pipe connected with the collecting tank.

[0008] Preferably, two rows of spraying heads are connected with the shunt pipe, and the spraying heads are staggered.

[0009] Preferably, the adjusting assembly further comprises an arc-shaped plate, two arc-shaped plates are symmetrically arranged, the arc-shaped plates are connected with the cover plate, a plurality of clamping blocks are connected with the inner wall of the arc-shaped plate; a moving block is slidingly connected with the rotating shaft, the moving block is connected with the adjusting handle, a clamping groove corresponding to the clamping block is formed in the moving block; a plurality of elastic members are distributed, two ends of the elastic members are connected with the cover plate and the moving block respectively.

[0010] Preferably, a plurality of guide strips are connected with the moving block, a guide groove corresponding to the guide strip is formed in the rotating shaft, and the guide groove is slidingly connected with the guide strip.

[0011] Preferably, a rotating disc is connected with the moving block, a scale is formed in the rotating disc, and a pointer is connected with the rack.

[0012] Preferably, two symmetrically arranged flow guide plates are connected with the cover plate, and the flow guide plates are arranged in an inverted V shape.

[0013] Preferably, the flow guide plates are coated with a hydrophobic layer.

[0014] Compared with the prior art, the above technical scheme of the utility model has the following beneficial technical effects:

[0015] In the utility model, the shunt pipes and the spraying heads arranged at the upper and lower ends of the plastic sheet can simultaneously cool the two sides of the plastic sheet to prevent warping and delamination caused by the slow cooling speed of one side, and the angle of the shunt pipes and the spraying heads can be adjusted when the rotating shaft is rotated by the adjusting handle, so that the water mist sprayed by the spraying heads has an angle more suitable for plastic sheets of different thicknesses. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a perspective view of the utility model;

[0017] Figure 2 It is a sectional view of the utility model; Figure 1

[0018] Figure 3 It is a structure schematic view of the cooling assembly;

[0019] Figure 4 It is an enlarged view of the structure at A of the utility model; Figure 3

[0020] ​​Label: 1, rack; 2, cover plate; 3, shunt pipe; 4, spray head; 5, rotating shaft; 6, adjusting handle; 7, connecting pipe; 8, water tank; 9, collection tank; 10, water outlet pipe; 11, arc plate; 12, clamping block; 13, moving block; 14, clamping groove; 15, elastic piece; 16, guide bar; 17, guide groove; 18, rotating disc; 19, guide plate. DETAILED DESCRIPTION

[0021] Example one

[0022] As Figures 1-4 shown, the utility model provides a plastic sheet forming device, including frame 1, cover plate 2 and cooling assembly, frame 1 is connected with cover plate 2, and is provided with forming roller group on frame 1, and cooling assembly is connected on frame 1, and cooling assembly includes spray assembly and adjusting assembly, and spray assembly includes shunt pipe 3 and spray head 4, two are symmetrically set up in shunt pipe 3, and a plurality of spray heads 4 are connected on shunt pipe 3, and adjusting assembly includes rotating shaft 5 and adjusting handle 6, and the number of rotating shaft 5 corresponds with shunt pipe 3, and rotating shaft 5 is rotatably connected on frame 1, and rotating shaft 5 is connected with shunt pipe 3, and adjusting handle 6 is installed at any one end of rotating shaft 5;In the use state of cooling assembly, adjusting handle 6 drives rotating shaft 5 and shunt pipe 3 to rotate, and the spray angle of spray head 4 on shunt pipe 3 changes to adapt to plastic sheet of different thicknesses.

[0023] Example two

[0024] As Figures 2-4 shown, the utility model provides a plastic sheet forming device, compared with example one, the detailed structure of cooling assembly is recorded in this embodiment, and spray assembly still includes connecting pipe 7, water tank 8 and collection tank 9, both ends of connecting pipe 7 are connected with two shunt pipes 3 respectively, water tank 8 is connected on frame 1, and submersible pump is connected in water tank 8, and the water outlet end of submersible pump is connected with connecting pipe 7, and collection tank 9 is connected on frame 1, and water outlet pipe 10 is connected on collection tank 9;Electromagnetic valve is connected on water outlet pipe 10;

[0025] In an alternative embodiment, two rows of spray heads 4 are connected on shunt pipe 3, and the spray heads 4 are staggered;The staggered spray heads 4 can improve the spray when spraying the plastic sheet, so that the uniformity is improved, and the effect is better for thicker plastic sheet;

[0026] The adjusting assembly further comprises two arc-shaped plates 11, clamping blocks 12, a moving block 13 and elastic members 15. The two arc-shaped plates 11 are symmetrically arranged and connected to the cover plate 2. The inner walls of the arc-shaped plates 11 are connected to a plurality of clamping blocks 12. The clamping blocks 12 are distributed in a circle with the central axis of the rotating shaft 5 as the center. The moving block 13 is slidingly connected to the rotating shaft 5. The moving block 13 is connected to the adjusting handle. The moving block 13 is provided with a clamping groove 14 corresponding to the clamping blocks 12. The moving block 13 is composed of two parts. The fixed part of the moving block 13 is provided with the clamping groove 14. The other part of the moving block 13 is a rotating part. The rotating part is rotatably connected to the fixed part. The elastic members 15 are connected to the rotating part. The elastic members 15 are distributed in a circle with the central axis of the rotating shaft 5 as the center. The two ends of the elastic members 15 are respectively connected to the cover plate 2 and the moving block 13. The elastic members 15 are selected from springs, but are not limited to springs.

[0027] In an optional embodiment, a plurality of guide strips 16 are connected to the moving block 13. A guide groove 17 corresponding to the guide strips 16 is formed in the rotating shaft 5. The guide groove 17 is slidingly connected to the guide strips 16.

[0028] In an optional embodiment, a rotating disc 18 is connected to the moving block 13. The rotating disc 18 is provided with a scale. A pointer is connected to the frame 1. The rotating disc 18 is synchronously rotated with the rotating shaft 5 and the moving block 13 to display the current spraying angle.

[0029] In an optional embodiment, two symmetrically arranged guide plates 19 are connected to the cover plate 2. The guide plates 19 are arranged in an inverted V shape. The guide plates 19 have an angle that guides the condensed water droplets to move to the two sides of the cover plate 2 to be drained into the collecting box 9, thereby preventing the water droplets from being condensed and falling.

[0030] In an optional embodiment, the guide plates 19 are coated with a hydrophobic layer. The hydrophobic layer is used to prevent water mist from being retained and condensed, thereby preventing the water mist from falling on the plastic sheet and affecting the plastic sheet.

[0031] In summary, the plastic sheet is stretched and extended by the forming roller group on the rack 1 after being extruded and formed by the die head of the extruder, and then enters the cooling channel formed by the two shunt pipes 3. The shunt pipes 3 arranged at the upper and lower ends can simultaneously cool the two sides of the plastic sheet, avoiding uneven cooling of the thick sheet. The submersible pump draws water from the water tank 8 into the connecting pipe 7, and through the connecting pipe 7, the two shunt pipes 3 are simultaneously transported with water source. The spray head 4 sprays water mist to reduce the surface temperature of the two sides of the plastic sheet. The sprayed cooling liquid enters the collection tank 9 below the plastic sheet for centralized collection, which is convenient for filtering and reusing in the later stage to reduce waste. When facing plastic sheets of different thicknesses, different spray angles are needed to adapt to the plastic sheet. At this time, the pressing adjusting handle 6 drives the moving block 13 to move, and the moving block 13 moves along the central axis of the rotating shaft 5 to compress the length of the elastic element 15. The clamping groove 14 on the moving block 13 is away from the clamping block 12 on the arc plate 11 at this time. The adjusting handle 6 can drive the fixed part of the moving block 13 to rotate. At this time, the guide strip 16 on the moving block 13 and the rotating shaft 5 cooperate to drive the rotating shaft 5 and the shunt pipe 3 and the spray head 4 to change the angle, so that the water mist sprayed has a certain angle with the plastic sheet to achieve better cooling effect. After adjustment is completed, the elastic element 15 rebounds to drive the rotating part and the fixed part of the moving block 13 to move, gradually making the moving block 13 enter the range of the clamping block 12, and the rotating shaft 5 and the moving block 13 are limited to rotate by the cooperation of the clamping groove 14 and the clamping block 12.

[0032] The embodiments of the utility model are described in detail above in combination with the drawings, but the utility model is not limited to this, and various changes can be made within the knowledge range of the persons skilled in the art without departing from the purpose of the utility model.

Claims

1. A plastic sheet forming apparatus characterized by comprising: The utility model relates to a plastic sheet cooling device The rack (1) is connected with the cover plate (2), and the rack (1) is provided with a forming roller group; The cooling assembly is connected on the rack (1), and the cooling assembly comprises a spraying assembly and an adjusting assembly; the spraying assembly comprises two shunt pipes (3) and a plurality of spray heads (4); the two shunt pipes (3) are symmetrically arranged, and each shunt pipe (3) is connected with a plurality of spray heads (4); the adjusting assembly comprises rotating shafts (5) and adjusting handles (6); the number of the rotating shafts (5) corresponds to the number of the shunt pipes (3); the rotating shafts (5) are rotatably connected to the rack (1); the rotating shafts (5) are connected with the shunt pipes (3); and the adjusting handles (6) are installed at any one end of the rotating shafts (5); in the use state of the cooling assembly, the adjusting handles (6) drive the rotating shafts (5) and the shunt pipes (3) to rotate, and the spray angle of the spray heads (4) on the shunt pipes (3) changes to adapt to plastic sheets with different thicknesses.

2. A plastic sheet forming apparatus according to claim 1, wherein The spraying assembly further comprises A connecting pipe (7) is connected with the two shunt pipes (3) at both ends; A water tank (8) is connected to the rack (1), and a submersible pump is connected in the water tank (8); the water outlet end of the submersible pump is connected with the connecting pipe (7); A collecting tank (9) is connected to the rack (1), and a water outlet pipe (10) is connected to the collecting tank (9).

3. A plastic sheet forming apparatus as defined in claim 1, wherein Two rows of spray heads (4) are connected to the shunt pipe (3), and the spray heads (4) are arranged alternately.

4. A plastic sheet forming apparatus as defined in claim 1, wherein The adjusting assembly further comprises Two arc-shaped plates (11) are symmetrically arranged and connected to the cover plate (2); a plurality of clamping blocks (12) are connected to the inner wall of the arc-shaped plates (11); A moving block (13) is slidably connected to the rotating shaft (5) and connected with the adjusting handle; a clamping groove (14) corresponding to the clamping block (12) is formed in the moving block (13); A plurality of elastic members (15) are distributed and connected with the cover plate (2) and the moving block (13) at both ends.

5. A plastic sheet forming apparatus as defined in claim 4, wherein A plurality of guide strips (16) are connected to the moving block (13), and a guide groove (17) corresponding to the guide strip (16) is formed in the rotating shaft (5); the guide groove (17) is slidably connected with the guide strip (16).

6. A plastic sheet forming apparatus as defined in claim 4, wherein A rotating disc (18) is connected to the moving block (13), and a scale is formed in the rotating disc (18); a pointer is connected to the rack (1).

7. A plastic sheet forming apparatus as defined in claim 1, wherein Two symmetrically arranged flow guide plates (19) are connected to the cover plate (2) and arranged in an inverted V shape.

8. A plastic sheet forming apparatus as defined in claim 7, wherein The flow guide plates (19) are coated with a hydrophobic layer.

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