Raw material screening device for PET plastic film processing

Abstract

The utility model relates to the technical field of PET (polyethylene terephthalate) plastic film processing, in particular to a raw material screening device for PET plastic film processing, which comprises a machine body, a movable plate, a screening plate and two groups of mounting components, the movable plate is slidably arranged in the machine body, the screening plate is arranged in the movable plate, each mounting component comprises a fixed plate fixedly arranged on the outer side of the machine body, two sets of swing plates are rotationally arranged on one side of the fixing plate, the swing plates are obliquely arranged, and the inclination directions of the two sets of swing plates are opposite. According to the raw material screening device for PET plastic film processing, through cooperation of a clamping roller and a screening plate, when the clamping roller moves, the clamping roller can be located above the screening plate, so that the screening plate can be stably installed in the machine body, when the clamping roller moves back, the screening plate is not blocked any more, and then the screening plate can be easily disassembled to be cleaned; and the screening holes are prevented from being blocked, the screening efficiency and precision are guaranteed, and manpower and time cost is saved.

Description

Technical Field

[0001] This utility model relates to the field of PET plastic film processing technology, specifically to a raw material screening device for PET plastic film processing. Background Technology

[0002] As is well known, the quality of raw materials directly affects the performance and quality of the final product during the production and processing of PET plastic film. Raw material screening is a crucial pre-process in the PET plastic film production process. Its main purpose is to classify and screen PET plastic raw materials according to particle size and remove any impurities that may exist, thereby ensuring that the raw materials put into production have a uniform particle size distribution and high purity.

[0003] Existing raw material screening devices for PET plastic film processing mostly adopt traditional vibrating screen structures, using a vibrating motor to drive the screen to screen the raw materials. However, the screening structure is usually fixedly installed and tightly connected to the main body of the equipment, making disassembly quite complicated. After long-term use, a large amount of attached raw material particles and impurities will remain on the screen. Since the screening structure is difficult to remove, cleaning can only be done on-site. This not only limits the operating space and makes it difficult to use cleaning tools, but also requires a lot of time and effort to meticulously treat every corner of the screen, resulting in extremely low cleaning efficiency and greatly increasing the manpower and time costs of equipment maintenance. Summary of the Invention

[0004] Technical problems to be solved

[0005] To overcome the problem of difficult cleaning of existing raw material screening devices for PET plastic film processing, this utility model provides a raw material screening device for PET plastic film processing with convenient cleaning effect.

[0006] Technical solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a raw material screening device for PET plastic film processing, comprising a machine body, a movable plate slidably disposed within the machine body, a screening plate disposed inside the movable plate, two sets of mounting components, each mounting component including a fixed plate fixedly disposed outside the machine body, two sets of swing plates rotatably disposed on one side of the fixed plate, the swing plates being inclined in opposite directions, one side of each set of swing plates being hinged to a horizontal plate, two sets of clamping rollers disposed on one side of the horizontal plate, the clamping rollers being slidably disposed within the machine body, after the clamping rollers enter the machine body, the clamping rollers will be positioned above the movable plate, at which point the movable plate will be unable to detach from the machine body, and when the clamping rollers return and no longer obstruct the movable plate, the operator can easily remove the movable plate and the screening plate, a push plate slidably disposed inside the fixed plate, a central shaft disposed on one side of the push plate, a pulley rotatably disposed on the outer side of the central shaft, and the outer side of the pulley contacting the outer side of the swing plate, and a drive component disposed on one side of the fixed plate.

[0008] Preferably, a support plate is slidably disposed inside the machine body, and sliders are disposed on both sides of the support plate, with the side of the slider away from the support plate penetrating through the machine body.

[0009] Furthermore, a rotating motor is provided on both sides of the machine body, and the output end of the rotating motor is connected to a cam key that is parallel to the slider.

[0010] Furthermore, the fixed plate has two sets of bearings inside, and a connecting rod is provided in the middle of the bearing. The end of the connecting rod away from the bearing passes through the fixed plate. A first gear and a second gear are provided on the outside of the connecting rod, and the first gear and the second gear are located inside and outside the fixed plate, respectively. A movable plate is provided on one side of the push plate, and a first rack is provided on one side of the movable plate. The first gear and the first rack mesh, and the second gear meshes with the second rack. The second rack is fixedly installed on one side of the drive assembly.

[0011] In a further embodiment, the drive assembly includes a rotary motor and a rotating column disposed on one side of the fixed plate. The two ends of the rotating column are respectively provided with a first threaded tube and a second threaded tube. The end of the first threaded tube away from the rotating column is keyed to the output end of the rotary motor. A sleeve is screwed onto the outer side of both the first threaded tube and the second threaded tube. A top block is provided on the outer side of the sleeve. The side of the top block away from the sleeve is fixedly disposed with a second rack.

[0012] Based on the aforementioned scheme, a protective cover is provided on one side of the fixing plate, and the protective cover is located outside the rotary motor, the first threaded tube, and the second threaded tube.

[0013] Furthermore, based on the aforementioned scheme, two sets of limiting rods are slidably arranged inside the horizontal plate, one end of each limiting rod is provided with a placement plate, and the end of the limiting rod away from the placement plate is fixedly arranged on the outside of the machine body.

[0014] Furthermore, based on the aforementioned scheme, a spring is provided on the side of the placement plate near the horizontal plate, and the end of the spring away from the placement plate is fixedly installed with the horizontal plate.

[0015] Beneficial effects

[0016] This raw material screening device for PET plastic film processing, through the cooperation of a clamping roller and a screening plate, ensures that the clamping roller is positioned above the screening plate when it moves, allowing the screening plate to be stably installed in the machine body. When the clamping roller moves back, the screening plate is no longer obstructed, and it can then be easily disassembled for cleaning, avoiding clogging of the screen holes, ensuring screening efficiency and accuracy, and saving labor and time costs. Attached Figure Description

[0017] Figure 1 This is a side view of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the body of this utility model;

[0019] Figure 3 This is a schematic diagram of the installation component of this utility model;

[0020] Figure 4 This is a cross-sectional view of the structure of the fixing plate of this utility model;

[0021] Figure 5 This is a schematic diagram of the connecting rod of this utility model;

[0022] Figure 6 This is a schematic diagram of the structure of the protective cover of this utility model;

[0023] Figure 7 This is a cross-sectional view of the protective cover of this utility model;

[0024] Figure 8 This is a schematic diagram of the structure of the drive component of this utility model;

[0025] Figure 9 This is a cross-sectional view of the structure of the body of this utility model.

[0026] In the diagram: 1. Machine body; 2. Mounting components; 201. Horizontal plate; 202. Spring; 203. Clamping roller; 204. Fixed shaft; 205. Swinging plate; 206. Movable shaft; 207. Fixed plate; 208. Pulley; 209. Central shaft; 210. Placement plate; 211. Push plate; 212. First rack; 213. Moving plate; 214. Second rack; 215. Bearing; 216. First gear; 217. Connecting rod; 218. Second gear; 219. Limiting rod; 3. Drive components; 301. Rotary motor; 302. First threaded tube; 303. Rotating column; 304. Sleeve; 305. Top block; 306. Second threaded tube; 4. Movable plate; 5. Protective cover; 6. Support plate; 7. Screening plate; 8. Slider; 9. Rotary motor; 10. Cam. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] See Figures 1-9 A raw material screening device for PET plastic film processing includes a body 1. A movable plate 4 and a support plate 6 are slidably connected inside the body 1. The support plate 6 is located at the bottom of the movable plate 4 and supports the movable plate 4, limiting its downward movement. A screening plate 7 is installed inside the movable plate 4. Slider blocks 8 are welded to both sides of the support plate 6. The side of the slider 8 away from the support plate 6 passes through the body 1. Rotary motors 9 are installed on both sides of the body 1. A cam 10 is keyed to the output end of the rotary motor 9. When the rotary motor 9 is turned on, the output end of the rotary motor 9 will drive the cam 10 to rotate and continuously push the slider 8. When the slider 8 is pushed, it will push the movable plate 4 to move by driving the support plate 6. When the slider 8 is no longer pushed, the movable plate 4 will move downward due to gravity, thereby causing the movable plate 4 to drive the screening plate 7 to swing up and down to screen the raw materials on the screening plate 7. Mounting components 2 are installed on both sides of the body 1, and a drive component 3 is installed on one side of the mounting components 2.

[0029] First, refer to Figures 1 to 5In this embodiment, the mounting assembly 2 includes a fixed plate 207 fixedly mounted on the outside of the body 1. Two sets of movable shafts 206 are provided on the top of the fixed plate 207. A swing plate 205 is rotatably connected to the outer side of each movable shaft 206. The swing plate 205 is inclined. A fixed shaft 204 is slidably connected to the side of the swing plate 205 away from the movable shaft 206. The outer sides of both sets of fixed shafts 204 are fixedly connected to a horizontal plate 201. Two sets of locking rollers 203 are provided on one side of the horizontal plate 201, and the ends of the locking rollers 203 away from the horizontal plate 201 are slidably connected inside the body 1. Two sets of movable plates 213 are slidably connected inside the fixed plate 207. A first rack 212 and a push plate 211 are provided on one side of each movable plate 213. One side of the push plate 211 penetrates the fixed plate 207. A central shaft 209 is fixedly connected to the top of the device. A pulley 208 is rotatably connected to the outer side of the central shaft 209. The outer side of the pulley 208 contacts the outer side of the swing plate 205. Two sets of bearings 215 are provided inside the fixed plate 207. A connecting rod 217 is provided in the middle of the bearings 215. The end of the connecting rod 217 away from the bearings 215 passes through the fixed plate 207. A first gear 216 and a second gear 218 are provided on the outer side of the connecting rod 217. The first gear 216 and the second gear 218 are located inside and outside the fixed plate 207, respectively. The first gear 216 meshes with the first rack 212. The second gear 218 meshes with the second rack 214. The second rack 214 is located on the outer side of the fixed plate 207. The second rack 214 is fixedly installed on one side of the drive assembly 3.

[0030] Specifically, in order to maintain the balance of the horizontal plate 201 during movement, two sets of limiting rods 219 are slidably connected inside the horizontal plate 201. The limiting rods 219 can be replaced with polygonal limiting plates with no less than three sides. One end of the limiting rod 219 is welded to a placement plate 210, and the end of the limiting rod 219 away from the placement plate 210 is bolted to the outside of the machine body 1. By setting the limiting rods 219, on the one hand, the limiting rods 219 maintain the balance of the horizontal plate 201 during movement, preventing the horizontal plate 201 from becoming unbalanced and swaying during movement, thus ensuring the normal displacement of the horizontal plate 201. On the other hand, the limiting rods 219 restrict the direction of the horizontal plate 201, preventing the device from failing due to misalignment of the horizontal plate 201, thus ensuring the normal use of the device.

[0031] Specifically, in order to enable the clamping roller 203 to move back quickly, a spring 202 is provided on the side of the placement plate 210 near the horizontal plate 201. The end of the spring 202 away from the placement plate 210 is fixedly set to the horizontal plate 201. Thus, when the horizontal plate 201 is pushed, the spring 202 will be stretched by the horizontal plate 201. When the horizontal plate 201 is no longer pushed, the spring 202 will drive the clamping roller 203 to move back by bouncing the horizontal plate 201, so that the clamping roller 203 can quickly return to the initial position, ensuring the reuse of the device.

[0032] Specifically, two sets of discs are bolted to the outside of the fixed shaft 204, and the two sets of discs are located on both sides of the swing plate 205. By setting the two sets of discs, the swing plate 205 can be restricted, so as to avoid the device from failing due to misalignment of the swing plate 205.

[0033] When the second rack 214 is pushed, it will drive the second gear 218 to rotate. The rotation of the second gear 218 will drive the first gear 216 to rotate by driving the connecting rod 217 to rotate. The rotation of the first gear 216 will drive the first rack 212 to move. The movement of the first rack 212 will drive the push plate 211 to move by driving the moving plate 213 to move. The movement of the push plate 211 will drive the pulley 208 to move laterally by driving the central shaft 209 and push the swing plate 205. At this time, the swing plate 205 will swing around the movable shaft 206 as the axis, so that one side of the swing plate 205 will push the horizontal plate 201 to move by pushing the fixed shaft 204. The movement of the horizontal plate 201 will drive the two sets of clamping rollers 203 to move laterally and enter the interior of the machine body 1. At this time, the clamping rollers 203 will be located above the movable plate 4, so that the movable plate 4 and the screening plate 7 cannot be separated from the machine body 1.

[0034] Finally, see Figures 6 to 8 In this embodiment, the drive assembly 3 includes a rotary motor 301 and a rotating column 303. The rotary motor 301 is a bidirectional motor, and its output end can rotate forward or backward. The rotary motor 301 is fixedly mounted on the bottom of the fixed plate 207. The two ends of the rotating column 303 are respectively fixedly connected to a first threaded tube 302 and a second threaded tube 306. The end of the first threaded tube 302 away from the rotating column 303 is keyed to the output end of the rotary motor 301. Sleeves 304 are screwed onto the outer sides of both the first threaded tube 302 and the second threaded tube 306. The threads on the outer sides of the first threaded tube 302 and the second threaded tube 306 are in opposite directions. A top block 305 is provided on the outer side of the sleeve 304. The side of the top block 305 away from the sleeve 304 is fixed to the second rack 214. The fixed connection is provided with a protective cover 5 at the bottom of the fixed plate 207. The protective cover 5 is located outside the rotary motor 301, the first threaded tube 302 and the second threaded tube 306. The protective cover 5 can protect the rotary motor 301, the first threaded tube 302 and the second threaded tube 306. After the rotary motor 301 is turned on, the output end of the rotary motor 301 will drive the first threaded tube 302 to rotate. The rotation of the first threaded tube 302 will drive the second threaded tube 306 to rotate by driving the rotating column 303. The rotation of the first threaded tube 302 and the second threaded tube 306 will drive the two sets of sleeves 304 to move linearly. The movement of the sleeves 304 will drive the top block 305 to move. The movement of the top block 305 will drive the second rack 214 to move.

[0035] This raw material screening device for PET plastic film processing, through the cooperation of the clamping roller 203 and the screening plate 7, ensures that when the clamping roller 203 moves, it will be positioned above the screening plate 7, allowing the screening plate 7 to be stably installed inside the machine body 1. When the clamping roller 203 moves back, the screening plate 7 is no longer obstructed, and then the screening plate 7 can be easily disassembled for cleaning, avoiding clogging of the screen holes, ensuring screening efficiency and accuracy, and saving labor and time costs.

[0036] Working principle:

[0037] In use, the raw material screening device for PET plastic film processing is first placed in the desired position. Then, the screening plate 7 is installed. Specifically, the movable plate 4 and the screening plate 7 are inserted into the machine body 1, so that the movable plate 4 and the support plate 6 are in contact. Then, the rotary motor 301 is turned on, causing its output end to drive the first threaded tube 302 to rotate. The rotation of the first threaded tube 302 will drive the second threaded tube 306 to rotate by driving the rotating column 303. The rotation of the first threaded tube 302 and the second threaded tube 306 will drive the two sets of sleeves 304 to move linearly. The movement of the sleeves 304 will drive the top block 305 to move. The movement of the top block 305 will drive the second rack 214 to move. When the second rack 214 is pushed, it will drive the second gear 218 to rotate. The rotation of the second gear 218 will drive the first gear 216 to rotate by driving the connecting rod 217 to rotate. The rotation of the first gear 216 will push the first rack 212 to move. The movement of the first rack 212 will drive the push plate 211 to move by driving the moving plate 213 to move. The movement of the push plate 211 will drive the pulley 208 to move laterally by driving the central shaft 209 and push the swing plate 205. At this time, the swing plate 205 will swing around the movable shaft 206 as the axis, so that one side of the swing plate 205 will push the horizontal plate 201 to move by pushing the fixed shaft 204. The movement of the horizontal plate 201 will drive the two sets of clamping rollers 203 to move laterally and enter the interior of the machine body 1. At this time, the clamping rollers 203 will be located above the movable plate 4, so that the movable plate 4 and the screening plate 7 cannot be separated from the machine body 1, and the installation is completed.

[0038] Finally, after prolonged use, the screening plate 7 should be cleaned. The specific operation is as follows: control the output end of the rotary motor 301 to reverse. At this time, the sleeve 304 moves back, causing the second rack 214 to push the second gear 218 to rotate. The rotation of the second gear 218 will drive the first gear 216 to rotate. The rotation of the first gear 216 will drive the first rack 212 to move back, so that the push plate 211 drives the pulley 208 to move back and no longer push the swing plate 205. At this time, the spring 202 will drive the clamping roller 203 to move back by springing the horizontal plate 201. This allows the clamping roller 203 to quickly return to its initial position and no longer block the movable plate 4. Then the operator can easily remove the movable plate 4 and the screening plate 7 for cleaning.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A raw material screening device for PET plastic film processing, characterized in that, include: Body (1); Movable plate (4), which is slidably disposed inside the body (1); Screening plate (7), the screening plate (7) is disposed inside the movable plate (4); Two sets of mounting components (2), each mounting component (2) includes a fixed plate (207) fixedly mounted on the outside of the body (1), two sets of swing plates (205) rotatably mounted on one side of the fixed plate (207), one side of each set of swing plates (205) being hinged to a horizontal plate (201), two sets of locking rods (203) mounted on one side of the horizontal plate (201), and the locking rods (203) being slidably mounted inside the body (1), a push plate (211) slidably mounted inside the fixed plate (207), a central shaft (209) mounted on one side of the push plate (211), a pulley (208) rotatably mounted on the outside of the central shaft (209), and the outside of the pulley (208) contacting the outside of the swing plate (205); and A drive assembly (3) is disposed on one side of a fixed plate (207).

2. The raw material screening device for PET plastic film processing according to claim 1, characterized in that, The body (1) is equipped with a support plate (6) that slides inside. Both sides of the support plate (6) are provided with sliders (8), and the side of the slider (8) away from the support plate (6) passes through the body (1).

3. The raw material screening device for PET plastic film processing according to claim 2, characterized in that, Rotary motors (9) are provided on both sides of the body (1), and the output end of the rotary motors (9) is connected to the cam (10) arranged parallel to the slider (8).

4. The raw material screening device for PET plastic film processing according to claim 1, characterized in that, The fixed plate (207) is provided with two sets of bearings (215). A connecting rod (217) is provided in the middle of the bearing (215). The end of the connecting rod (217) away from the bearing (215) passes through the fixed plate (207). A first gear (216) and a second gear (218) are provided on the outside of the connecting rod (217). The first gear (216) and the second gear (218) are located inside and outside the fixed plate (207), respectively. A moving plate (213) is provided on one side of the push plate (211). A first rack (212) is provided on one side of the moving plate (213). The first gear (216) and the first rack (212) mesh. The second gear (218) meshes with the second rack (214). The second rack (214) and the drive assembly (3) are fixedly disposed on one side.

5. The raw material screening device for PET plastic film processing according to claim 4, characterized in that, The drive assembly (3) includes a rotary motor (301) and a rotating column (303) disposed on one side of the fixed plate (207). The two ends of the rotating column (303) are respectively provided with a first threaded tube (302) and a second threaded tube (306). The end of the first threaded tube (302) away from the rotating column (303) is keyed to the output end of the rotary motor (301). The outer sides of the first threaded tube (302) and the second threaded tube (306) are both screwed with sleeves (304). The outer side of the sleeve (304) is provided with a top block (305). The side of the top block (305) away from the sleeve (304) is fixedly disposed with a second rack (214).

6. The raw material screening device for PET plastic film processing according to claim 5, characterized in that, A protective cover (5) is provided on one side of the fixing plate (207), and the protective cover (5) is located outside the rotary motor (301), the first threaded tube (302) and the second threaded tube (306).

7. The raw material screening device for PET plastic film processing according to claim 1, characterized in that, The inside of the horizontal plate (201) is provided with two sets of limiting rods (219). One end of the limiting rod (219) is provided with a placement plate (210), and the end of the limiting rod (219) away from the placement plate (210) is fixedly set on the outside of the body (1).

8. The raw material screening device for PET plastic film processing according to claim 7, characterized in that, A spring (202) is provided on the side of the placement plate (210) near the horizontal plate (201), and the end of the spring (202) away from the placement plate (210) is fixedly disposed with the horizontal plate (201).

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