Processing production line for plastic products

Abstract

The invention relates to a processing production line for plastic products, and belongs to the technical field of plastic processing devices.The processing production line comprises a heating box, conical pouring ports are fixedly formed in the two ends of the heating box, and the heating box is used for melting raw materials into liquid in a high-temperature heating mode and conveying the liquid to a calendering mechanism; and the calendering mechanism comprises a first motor arranged on the first box body, an output shaft of the first motor extends to a first pressing roller, the first pressing roller and a second pressing roller are in transmission connection through a tensioning belt, and one end of the first motor is connected with a first air cylinder on the outer wall of the first box body through a first spring. According to the air extrusion device, the technical problems that according to an existing air extrusion structure design, air is generally exhausted through a single clamping roller, internal air always remains, air cannot be completely exhausted effectively, and meanwhile, the plastic film is wrinkled due to the long conveying distance in the winding process can be solved.

Description

Technical Field

[0001] The invention relates to the technical field of plastic processing devices, in particular to a processing production line for plastic products. Background Art

[0002] Plastic products are a general term for daily and industrial products made of plastic as the main raw material. They include products made from injection molding, vacuum forming and other processes using plastic as the raw material. Plastic is a type of synthetic polymer material with plasticity. Together with synthetic rubber and synthetic fiber, it forms the three major synthetic materials that are indispensable in daily life. Specifically, plastic is a material that uses natural or synthetic resin as the main component, adds various additives, can be molded into a certain shape under certain temperature and pressure conditions, and maintains the same shape at room temperature.

[0003] In the process of plastic bag processing, plastic particles are heated into a molten state, blown into a cylinder, extruded after cooling, the air inside is discharged, and pressed into two layers of film. Then, they are cut and finally processed and collected by a cutting machine, thereby completing the production process of plastic packaging bags. However, the existing air extrusion structure design generally uses a single clamping rod to discharge the air, and the air inside often remains, and the air cannot be effectively discharged, which reduces the product quality. At the same time, during the winding process of the plastic film, wrinkles will appear due to the long conveying distance, which is further not conducive to improving the product quality.

[0004] Therefore, we now need a processing production line for plastic products to solve the above-mentioned technical problems. Summary of the invention

[0005] The purpose of the present invention is to provide a processing production line for plastic products to solve the technical problems that the existing air extrusion structure design generally uses a single clamping rod to discharge the air, the internal air often has residual air, and the air cannot be effectively discharged completely. At the same time, during the winding process of the plastic film, the long conveying distance will cause wrinkles.

[0006] The purpose of the present invention can be achieved through the following technical solutions: A processing production line for plastic products, comprising: A heating box, wherein conical discharge ports are fixedly installed at both ends of the heating box, and the heating box is used to melt the raw materials into liquid by high-temperature heating and convey them to the calendering mechanism; A calendering mechanism, wherein the calendering mechanism comprises a first motor disposed on a first box body, wherein an output shaft of the first motor extends to a first pressing roller, wherein the first pressing roller and a second pressing roller are connected via a tensioning belt transmission, and one end of the first motor and a first cylinder on an outer wall of the first box body are connected via a first spring, wherein as the first cylinder is started, a pressing distance between the first pressing roller and the second pressing roller is adjusted in telescopic manner; A blow molding mechanism, which is mounted on the bottom plate and is used to blow the calendered plastic into a cylindrical shape and transport the plastic to the air extrusion mechanism; The reel comprises a second motor placed on a frame, the output shaft of the second motor extends to a reel, and as the second motor is started, the reel reels the processed plastic product.

[0007] Furthermore, the blow molding mechanism includes a hair dryer placed at the bottom end of the cylinder, and the blowing air is connected to an air outlet placed at the center of the top end of the cylinder through a conduit. The outer wall edge of the cylinder is provided with an annular extrusion port connected to the blow molding mechanism, and a return air port is formed on the cylinder between the annular extrusion port and the air outlet.

[0008] Furthermore, the air extrusion mechanism includes a third motor and a fourth motor placed on the second box body, the output shaft of the third motor extends to the first transmission roller, the first transmission roller and the second transmission roller are connected through a first conveyor belt transmission, the output shaft of the fourth motor extends to the friction roller, the third motor and the fourth motor maintain synchronous reverse rotation, and the first transmission roller, the second transmission roller and the friction roller are distributed in an inverted L shape; Wherein, the friction roller is connected to the third transmission roller through a second conveyor belt transmission connection, and the third transmission roller is connected to a fourth transmission roller arranged in parallel through a third conveyor belt transmission connection.

[0009] Furthermore, a clamping cavity is formed between the first transmission roller and the second transmission roller and the abutment plate on the inner wall of the second box body, and one end of the abutment plate away from the first transmission roller is connected to a side plate through a second spring, an electrostatic roller movably connected to the inner wall of the second box body is provided between the friction roller and the discharge port of the second box body, and second cylinders disposed on the outer wall of the second box body are installed at both ends of the electrostatic roller, and a guide roller disposed on the inner wall of the second box body is provided between the fourth transmission roller and the first transmission roller; The plastic product sequentially passes through the first transmission roller, the top of the second transmission roller, bypasses the friction roller, and extends to the discharge port of the second box and the electrostatic roller of the second cylinder respectively.

[0010] Furthermore, the side plate is mounted on the inner wall of the second box body by means of a bolt assembly that is locked and fixed, and the abutment plate is mounted on the inner wall of the second box body by means of a movable connection.

[0011] Furthermore, a flattening mechanism is provided between the output shaft of the second motor and the winding wheel, and the flattening mechanism includes a first bevel gear placed on the output shaft of the second motor, the outer wall of the first bevel gear is meshed with a second bevel gear fixed on the reciprocating screw, the reciprocating screw is spirally driven with a screw nut fixed on the bracket, the two sides of the bottom end of the bracket extend to the third pressure roller and the fourth pressure roller respectively, and a flattening cavity connected to the plastic product is provided between the third pressure roller and the fourth pressure roller.

[0012] Furthermore, one end of the reciprocating screw is provided with a rolling groove connected to the protruding portion of the frame, and a strip block is integrally formed and installed on the screw nut, and one end of the strip block is connected to a sliding groove adapted thereto along the length direction of the frame.

[0013] Furthermore, a support plate connected to the first box body is provided at the bottom end of the first cylinder, and the first cylinder and the support plate are connected in a locking and fixing manner by a brake pin.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention has a reasonable structural design and a simplified functional structure. It can adjust the tension of the raw material during calendering to produce plastic films of different thicknesses. The air in the plastic film can also be fully squeezed out through the air extrusion mechanism, thereby improving product quality and facilitating the development of the next process.

[0015] 2. When the winder is winding the processed plastic products, the third pressing roller and the fourth pressing roller can also be pressed back and forth by the transmission mechanism at the same time, so as to prevent the plastic film from wrinkling, thereby further improving the product quality.

[0016] 3. The liquid plastic is first pushed out through the annular extrusion port on the edge of the cylinder, and then the liquid plastic can be blown into a cylindrical shape by the hair dryer on the cylinder, so that the plastic film can be formed into a wrapping body. In addition, a return air port is provided on the cylinder, which can squeeze the air to discharge excess air and prevent the occurrence of air residue.

[0017] 4. The air extrusion mechanism forms a clamping cavity through the transmission roller during the conveying process, so that the air can be directly expelled by extrusion during the conveying process. The inverted L-shaped distribution of the transmission roller can expand the conveying extrusion area, thereby improving the extrusion quality. The friction roller makes the plastic film have static electricity through friction, so that the plastic film re-enters the transmission roller under the action of the second cylinder for multiple extrusion processes, which can effectively expel the air and greatly improve the product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0019] Figure 1 The structure of the processing line of the plastic products of the present invention is schematically shown. Figure 1 ; Figure 2 The structure of the processing line of the plastic products of the present invention is schematically shown. Figure 2 ; Figure 3 It is a front view of a processing line for plastic products of the present invention; Figure 4 For the present invention Figure 1 A magnified image of point A; Figure 5 For the present invention Figure 2 A magnified view of point B; Figure 6 It is a structural schematic diagram of the air extrusion mechanism of the present invention; Figure 7 It is a schematic diagram of the interior of the first box of the present invention; Figure 8 It is the meshing transmission diagram of the first bevel gear and the second bevel gear of the present invention.

[0020] In the figure: 1, heating box; 2, calendering mechanism; 3, first box; 4, first motor; 5, first pressure roller; 6, second pressure roller; 7, tension belt; 8, first cylinder; 9, first spring; 10, blow molding mechanism; 11, air extrusion mechanism; 12, winder; 13, second motor; 14, winder; 15, cylinder; 16, air outlet; 17, annular extrusion outlet; 18, return air outlet; 19, second box; 20, third motor; 21, fourth motor; 22, first transmission roller; 23, second Transmission roller; 24, first conveyor belt; 25, friction roller; 26, third transmission roller; 27, second conveyor belt; 28, fourth transmission roller; 29, third conveyor belt; 30, contact plate; 31, second spring; 32, side plate; 33, electrostatic roller; 34, second cylinder; 35, guide roller; 36, flattening mechanism; 37, first bevel gear; 38, reciprocating screw; 39, second bevel gear; 40, bracket; 41, screw nut; 42, third pressure roller; 43, fourth pressure roller; 44, strip block. DETAILED DESCRIPTION

[0021] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0022] Reference Manual Attached Figure 1 -Attached Figure 8 , a processing production line for plastic products, comprising: a heating box 1, with conical discharge ports fixedly installed at both ends of the heating box 1, and the heating box 1 is used to melt the raw materials into liquid by high-temperature heating and convey them to the calendering mechanism 2; A calendering mechanism 2, the calendering mechanism 2 includes a first motor 4 placed on a first box body 3, the output shaft of the first motor 4 extends to a first pressure roller 5, the first pressure roller 5 and the second pressure roller 6 are connected by a tensioning belt 7, and one end of the first motor 4 and a first cylinder 8 on the outer wall of the first box body 3 are connected by a first spring 9, and as the first cylinder 8 is started, the pressing distance between the first pressure roller 5 and the second pressure roller 6 is telescopically adjusted; a blow molding mechanism 10, the blow molding mechanism 10 is installed on a bottom plate, and the blow molding mechanism 10 is used to blow the calendered plastic into a cylindrical shape and convey the plastic to an air extrusion mechanism 11; a winder 12, the winder 12 includes a second motor 13 placed on a frame, the output shaft of the second motor 13 extends to a winding wheel 14, and as the second motor 13 is started, the winding wheel 14 winds up the processed plastic product.

[0023] The blow molding mechanism 10 includes a blower disposed at the bottom end of a cylinder 15, and the blowing air is connected to an air outlet 16 disposed at the center of the top end of the cylinder 15 through a conduit. An annular extrusion port 17 connected to the blow molding mechanism 10 is provided at the edge of the outer wall of the cylinder 15, and a return air port 18 disposed on the cylinder 15 is formed between the annular extrusion port 17 and the air outlet 16.

[0024] The blow molding mechanism 10 can give corresponding driving force to the liquid plastic through the delivery pump between the calendering mechanism 2 and the blow molding mechanism 10. Under the action of the delivery pump, the liquid plastic is pushed out through the annular extrusion port 17, and under the action of the air outlet 16 at the top center of the cylinder 15, it can be blown into a wrapped cylinder, which is convenient for forming a plastic bag with a sealed outer wall. In addition, the setting of the return air port 18 at the top of the cylinder 15 can provide a corresponding air outlet 16 space for the air extrusion mechanism 11 when discharging air.

[0025] The air extrusion mechanism 11 includes a third motor 20 and a fourth motor 21 placed on the second box body 19, the output shaft of the third motor 20 extends to the first transmission roller 22, the first transmission roller 22 and the second transmission roller 23 are connected by a first conveyor belt 24, the output shaft of the fourth motor 21 extends to the friction roller 25, the third motor 20 and the fourth motor 21 maintain synchronous reverse rotation, and the first transmission roller 22, the second transmission roller 23 and the friction roller 25 are distributed in an inverted L shape; wherein, the friction roller 25 and the third transmission roller 26 are connected by a second conveyor belt 27, and the third transmission roller 26 and the fourth transmission roller 28 arranged in parallel are connected by a third conveyor belt 29.

[0026] The first transmission roller 22, the second transmission roller 23 and the friction roller 25 which are distributed in an inverted L shape can expand the clamping area, and by expanding the conveying clamping area, it is convenient to discharge the air in the plastic film. At the same time, the second conveyor belt 27 between the friction roller 25 and the third transmission roller 26 and the third conveyor belt 29 between the third transmission roller 26 and the fourth transmission roller 28 which are arranged in parallel are staggered, that is to say, the two conveyor belts do not interfere with each other during transmission, so as to ensure the normal operation of their respective transmission parts. Moreover, the reverse transmission setting of the third motor 20 and the fourth motor 21 is to ensure that the plastic film is conveyed in the same direction. The third motor 20 can convey the plastic film to the friction roller 25 through the first transmission roller 22, and the fourth motor 21 cooperates with the second cylinder 34 to convey the plastic film to the third transmission roller 26 through the friction roller 25, and re-convey it to the first transmission roller 22 through the guide roller 35 for air extrusion.

[0027] A clamping cavity is formed between the first transmission roller 22, the second transmission roller 23 and the contact plate 30 on the inner wall of the second box body 19, and one end of the contact plate 30 is connected to the side plate 32 away from the first transmission roller 22 through a second spring 31, an electrostatic roller 33 movably connected to the inner wall of the second box body 19 is provided between the friction roller 25 and the discharge port of the second box body 19, and a second cylinder 34 placed on the outer wall of the second box body 19 is installed at both ends of the electrostatic roller 33, and a guide roller 35 placed on the inner wall of the second box body 19 is provided between the fourth transmission roller 28 and the first transmission roller 22; wherein, the plastic products pass through the first transmission roller 22, the top of the second transmission roller 23, and bypass the friction roller 25 and extend to the discharge port of the second box body 19 and the electrostatic roller 33 of the second cylinder 34 respectively.

[0028] The resistance plate 30 movably connected to the inner wall of the second box body 19 is connected to the side plate 32 through the second spring 31. The above-mentioned structural design is mainly to adapt to plastic films of different thicknesses. At the same time, the clamping cavity formed between the resistance plate 30 and the first transmission roller 22 can perform air extrusion work during the plastic film conveying work, thereby improving the work efficiency and being able to perform exhaust operations.

[0029] The friction roller 25 of the output shaft of the fourth motor 21 can make the plastic film carry a certain amount of charge and form static electricity by means of rotation and friction. When the plastic film has been fully transported, extruded and exhausted by the first transmission roller 22 and the second transmission roller 23, it can directly enter the winder 12 through the discharge port on the second box body 19. However, when the plastic film is transported, extruded and exhausted by the first transmission roller 22 and the second transmission roller 23, but there is corresponding residual air, the second cylinder 34 can push the electrostatic roller 33 to contact the plastic film, and the plastic film is adsorbed on the electrostatic roller 33 through the principle of electrostatic adsorption, and then the second cylinder 34 continues to push upward, so that the plastic film can be transported to the third transmission roller 26, and then re-transmitted to the first transmission roller 22 through the transmission mechanism to perform multiple air extrusion operations until the residual air in the plastic film is discharged.

[0030] Reference Manual Attached Figure 1 , Attachment Figure 2 , Attachment Figure 3 and attached Figure 6 The side plate 32 is installed on the inner wall of the second box body 19 by means of a bolt assembly locking and fixing method, and the contact plate 30 is installed on the inner wall of the second box body 19 by means of a movable connection method. A flattening mechanism 36 is provided between the output shaft of the second motor 13 and the winding wheel 14. The flattening mechanism 36 includes a first bevel gear 37 disposed on the output shaft of the second motor 13. The outer wall of the first bevel gear 37 is meshed and driven with a second bevel gear 39 fixed on a reciprocating screw 38. The reciprocating screw 38 is spirally driven with a screw nut 41 fixed on a bracket 40. The bottom ends of the bracket 40 extend to the third pressure roller 42 and the fourth pressure roller 43 on both sides respectively. A flattening cavity connected to the plastic product is provided between the third pressure roller 42 and the fourth pressure roller 43.

[0031] One end of the reciprocating screw 38 is provided with a rolling groove connected to the protruding part of the frame, and a strip block 44 is integrally formed and installed on the screw nut 41, and one end of the strip block 44 is connected to a slide groove adapted thereto along the length direction of the frame. The bottom end of the first cylinder 8 is provided with a support plate connected to the first box body 3, and the first cylinder 8 and the support plate are connected by a brake pin locking and fixing method. The brake pin locking and fixing method can facilitate the rapid installation and fixing between the structural parts, facilitate personnel operation, and thus improve work efficiency.

[0032] The present invention has a reasonable structural design and a simplified functional structure. It can adjust the tension of the raw material during calendering to produce plastic films of different thicknesses. The air in the plastic film can also be fully squeezed out through the air extrusion mechanism 11, thereby improving product quality and facilitating the next process.

[0033] When the winder 12 winds up the processed plastic product, it can also flatten the third pressing roller 42 and the fourth pressing roller 43 back and forth through the transmission mechanism, thereby preventing the plastic film from wrinkling, thereby further improving product quality.

[0034] After starting, the second motor 13 can drive the winding wheel 14 to rotate and reel in, and when the output shaft of the second motor 13 is rotating, the vertical rotational force can be converted into horizontal rotational force through the meshing transmission of the first bevel gear 37 and the second bevel gear 39, and at the same time, it can drive the rotation of the reciprocating screw 38, and then with the help of the spiral transmission, the third pressure roller 42 and the fourth pressure roller 43 are moved back and forth horizontally. Since the third pressure roller 42 and the fourth pressure roller 43 are movably connected to the bracket 40, the flattening cavity between the third pressure roller 42 and the fourth pressure roller 43 can effectively flatten the plastic film through rolling, thereby preventing the plastic film from wrinkling.

[0035] In addition, the strip block 44 on the screw nut 41 is connected with a slide groove along the length direction of the frame, that is, during the translational movement of the screw nut 41, the slide groove can effectively prevent the transmission part from deviating from its position during the movement, thereby further ensuring the accuracy of the movement of the transmission part and ensuring that the device can perform normal transmission work.

[0036] Reference Manual Attached Figure 1 , Attachment Figure 2 , Attachment Figure 7 and attached Figure 8 An electrostatic roller 33 movably connected to the inner wall of the second box body 19 is provided between the friction roller 25 and the discharge port of the second box body 19, and second cylinders 34 placed on the outer wall of the second box body 19 are installed at both ends of the electrostatic roller 33, and a guide roller 35 placed on the inner wall of the second box body 19 is provided between the fourth transmission roller 28 and the first transmission roller 22.

[0037] The liquid plastic is first pushed out through the annular extrusion port 17 on the edge of the barrel 15, and then the liquid plastic can be blown into a cylindrical shape by the hair dryer on the barrel 15, so as to facilitate the plastic film to form a wrapping body, and a return air port 18 is provided on the barrel 15, which can facilitate the squeezing of air to discharge excess air and prevent the occurrence of air residue.

[0038] The air extrusion mechanism 11 forms a clamping cavity during the conveying process through the transmission roller, so that the air can be directly expelled by extrusion during the conveying process. The inverted L-shaped distribution of the transmission roller can expand the conveying extrusion area, thereby improving the extrusion quality. The friction roller 25 makes the plastic film have static electricity through friction, so that the plastic film is re-entered onto the transmission roller under the action of the second cylinder 34 for multiple extrusion processes, which can effectively expel the air and greatly improve the product quality.

[0039] The rotation directions of the third motor 20 and the fourth motor 21 are oppositely arranged, so that the first transmission roller 22 and the second transmission roller 23 can be used for conveying and guiding. At the same time, under the action of the fourth motor 21, when the friction roller 25 is used to convey and guide the plastic film, the third transmission roller 26 and the fourth transmission roller 28 can also perform a rotational motion in the same direction, so that the plastic film can be re-conveyed to the clamping cavity in cooperation with the guide roller 35, and then the corresponding air extrusion work can be performed.

[0040] The flattening mechanism 36 includes a first bevel gear 37 placed on the output shaft of the second motor 13, the outer wall of the first bevel gear 37 is meshed with a second bevel gear 39 fixed on the reciprocating screw 38, and the reciprocating screw 38 is spirally driven with a screw nut 41 fixed on the bracket 40. The flattening mechanism 36 essentially relies on the force of the second motor 13 to achieve the winding and flattening of the plastic film at the same time. First, the output shaft of the second motor 13 extends to the winding wheel 14 to perform the corresponding winding work, and can be converted into a reciprocating wire through the meshing transmission of the gears. The lever 38 rotates, and the first bevel gear 37 and the second bevel gear 39 remain vertically arranged, so that the direction of the force can be converted and adjusted, and at the same time, movable grooves connected to the third pressure roller 42 and the fourth pressure roller 43 are provided on both sides of the bottom end of the bracket 40, so that the corresponding rotational force can be generated when the plastic film passes through to keep it flat, and the other ends of the third pressure roller 42 and the fourth pressure roller 43 are provided with rollers placed on the inner wall of the frame, which can not only provide corresponding supporting force, but also ensure that the third pressure roller 42 and the fourth pressure roller 43 themselves can rotate normally.

[0041] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

[0042] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A processing production line for plastic products, characterized in that: include: A heating box (1), wherein both ends of the heating box (1) are fixedly provided with conical material discharge ports, and the heating box (1) is used to melt the raw material into a liquid state by high-temperature heating and convey the liquid to the calendering mechanism (2); A calendering mechanism (2), the calendering mechanism (2) comprising a first motor (4) disposed on a first housing (3), the output shaft of the first motor (4) extending to a first pressing roller (5), the first pressing roller (5) and a second pressing roller (6) being connected to each other via a tensioning belt (7), and one end of the first motor (4) and a first cylinder (8) on an outer wall of the first housing (3) being connected via a first spring (9), and as the first cylinder (8) is started, the pressing distance between the first pressing roller (5) and the second pressing roller (6) is adjusted in telescopic manner; A blow molding mechanism (10), wherein the blow molding mechanism (10) is mounted on the bottom plate and is used to blow the calendered plastic into a cylindrical shape and convey the plastic to the air extrusion mechanism (11); A reel (12), the reel (12) comprising a second motor (13) disposed on a frame, the output shaft of the second motor (13) extending to a reel wheel (14), and when the second motor (13) is started, the reel wheel (14) reels the processed plastic product.

2. A processing production line for plastic products according to claim 1, characterized in that: The blow molding mechanism (10) comprises a blower disposed at the bottom end of a barrel (15); the blow air is connected to an air outlet (16) disposed at the center of the top end of the barrel (15) through a conduit; an annular extrusion port (17) connected to the blow molding mechanism (10) is disposed at the edge of the outer wall of the barrel (15); and a return air port (18) disposed on the barrel (15) is formed between the annular extrusion port (17) and the air outlet (16).

3. A processing production line for plastic products according to claim 1, characterized in that: The air extrusion mechanism (11) comprises a third motor (20) and a fourth motor (21) disposed on the second housing (19); the output shaft of the third motor (20) extends to the first transmission roller (22); the first transmission roller (22) and the second transmission roller (23) are connected to each other via a first conveyor belt (24); the output shaft of the fourth motor (21) extends to the friction roller (25); the third motor (20) and the fourth motor (21) rotate synchronously in opposite directions; and the first transmission roller (22), the second transmission roller (23) and the friction roller (25) are arranged in an inverted L shape; The friction roller (25) and the third transmission roller (26) are transmission-connected via a second conveyor belt (27), and the third transmission roller (26) and a fourth transmission roller (28) arranged in parallel are transmission-connected via a third conveyor belt (29).

4. A processing production line for plastic products according to claim 3, characterized in that: A clamping cavity is formed between the first transmission roller (22) and the second transmission roller (23) and the abutment plate (30) on the inner wall of the second box (19), and one end of the abutment plate (30) away from the first transmission roller (22) is connected to a side plate (32) via a second spring (31); an electrostatic roller (33) movably connected to the inner wall of the second box (19) is provided between the friction roller (25) and the discharge port of the second box (19), and second cylinders (34) disposed on the outer wall of the second box (19) are installed at both ends of the electrostatic roller (33); and a guide roller (35) disposed on the inner wall of the second box (19) is provided between the fourth transmission roller (28) and the first transmission roller (22); The plastic product sequentially passes through the first transmission roller (22), the top of the second transmission roller (23), bypasses the friction roller (25), and extends to the discharge port of the second box (19) and the electrostatic roller (33) of the second cylinder (34), respectively.

5. A processing production line for plastic products according to claim 4, characterized in that: The side plate (32) is mounted on the inner wall of the second box body (19) by means of a bolt assembly locking and fixing method, and the contact plate (30) is mounted on the inner wall of the second box body (19) by means of a movable connection method.

6. A processing production line for plastic products according to claim 1, characterized in that: A flattening mechanism (36) is provided between the output shaft of the second motor (13) and the winding wheel (14), the flattening mechanism (36) comprising a first bevel gear (37) disposed on the output shaft of the second motor (13), the outer wall of the first bevel gear (37) meshingly driving with a second bevel gear (39) fixed on a reciprocating screw (38), the reciprocating screw (38) spirally driving with a screw nut (41) fixed on a bracket (40), the bottom end of the bracket (40) extending to a third pressure roller (42) and a fourth pressure roller (43) on both sides, and a flattening cavity connected to the plastic product is provided between the third pressure roller (42) and the fourth pressure roller (43).

7. A processing production line for plastic products according to claim 6, characterized in that: One end of the reciprocating screw (38) is provided with a rolling groove connected to the protruding portion of the frame, and a strip block (44) is integrally formed and mounted on the screw nut (41), and one end of the strip block (44) is connected to a sliding groove adapted thereto along the length direction of the frame.

8. A processing production line for plastic products according to claim 1, characterized in that: A support plate connected to the first box body (3) is provided at the bottom end of the first cylinder (8), and the first cylinder (8) and the support plate are connected in a locking and fixing manner by a brake pin.

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