Degradable plastic film and production process thereof

Abstract

The invention relates to the field of degradable plastic film processing, in particular to a degradable plastic film and a production process thereof.The degradable plastic film comprises a base, a rotating roller is rotationally connected to the base, a discharging mechanism is fixedly connected to the upper end of the base, a rotating frame is rotationally connected to the base, a groove rod is rotationally connected to the rotating frame, and a winding roller is rotationally connected to the groove rod; a sliding sleeve is connected to the winding roller in a sliding mode, a limiting strip is arranged on the sliding sleeve, a corresponding groove is formed in the winding roller, the limiting strip and the groove are matched to achieve sliding connection, a plurality of anti-skid protruding edges are arranged on the surface of the sliding sleeve, an air injection mechanism is arranged above the winding roller, the discharging mechanism comprises a die head, and a strip-shaped opening is formed in the lower end of the die head. According to the plastic film cooling and winding device, a plastic film can be automatically cooled and wound, and manual traction is not needed.

Description

Technical Field

[0001] The invention relates to the field of degradable plastic film processing, in particular to a degradable plastic film and a production process thereof. Background Art

[0002] Plastic film can be made through different production processes, such as blow molding, cast film, calendering, etc. These processes make the plastic film have different thickness, strength and transparency to meet various application requirements. In order to further protect the environment, the mainstream plastic film currently produced is mostly degradable plastic film. When the cast film method is used to produce degradable plastic film, the staff needs to manually pull the plastic film onto the equipment, and the plastic film needs to be manually cut after the production is completed. This method not only increases the labor intensity of the staff, but also has the risk of injury due to improper operation. Summary of the invention

[0003] In view of this, the technical problem to be solved by the present invention is to provide a degradable plastic film and a production process thereof. The present invention can automatically cool and roll up the plastic film without manual traction.

[0004] A degradable plastic film production device comprises a base, a rotating roller is rotatably connected to the base, a discharging mechanism is fixedly connected to the upper end of the base, a rotating frame is rotatably connected to the base, a groove rod is rotatably connected to the rotating frame, a winding roller is rotatably connected to the groove rod, a sliding sleeve is slidably connected to the winding roller, a limit strip is arranged on the sliding sleeve, a corresponding groove is opened on the winding roller, the limit strip cooperates with the groove to realize sliding connection, a plurality of anti-slip ridges are arranged on the surface of the sliding sleeve, and an air injection mechanism is arranged above the winding roller.

[0005] The material discharging mechanism comprises a die head, a strip opening is provided at the lower end of the die head, and a connecting pipe is fixedly connected to the upper end of the die head.

[0006] The jet mechanism comprises an air cylinder which is fixedly connected to the base, a nozzle is fixedly connected to the air cylinder, a plurality of nozzles are installed at the lower end of the nozzle, and a sliding plug is slidably connected in the air cylinder.

[0007] The sliding plug is fixedly connected with an air intake pipe, and both the air intake pipe and the nozzle are equipped with a one-way valve.

[0008] The rotating roller is fixedly connected with an eccentric wheel, the eccentric wheel is rotatably connected with a connecting rod, the connecting rod is rotatably connected with a push-pull rod, and the push-pull rod is rotatably connected to the sliding plug.

[0009] The base is fixedly connected with a driving motor, and the rotating roller is fixedly connected to the output shaft of the driving motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0011] Figure 1 and Figure 2 It is a schematic diagram of the overall structure of a degradable plastic film production device;

[0012] Figure 3 It is a structural schematic diagram of the die head;

[0013] Figure 4 It is a schematic diagram of the structure of the gas cylinder;

[0014] Figure 5 It is the structural schematic diagram of the nozzle;

[0015] Figure 6 is a schematic diagram of the structure of the sliding sleeve;

[0016] Figure 7 It is a structural schematic diagram of the winding roller;

[0017] Figure 8 It is a schematic diagram of the structure of the roller. DETAILED DESCRIPTION

[0018] The present invention is described in detail with reference to the accompanying drawings in the embodiments of the present invention.

[0019] See also Figure 5-8 ,

[0020] A degradable plastic film production device comprises a base 101, a rotating roller 102 is rotatably connected to the base 101 via a bearing, a discharging mechanism is fixedly connected to the base 101, a rotating frame 202 is rotatably connected to the base 101 via a bearing, a groove rod 202 is rotatably connected to the rotating frame 202 via a bearing, a winding roller 203 is rotatably connected to the groove rod 202 via a bearing, a sliding sleeve 204 is slidably connected to the winding roller 203, a limiting strip 205 is arranged on the sliding sleeve 204, a corresponding groove is opened on the winding roller 203, the limiting strip 205 cooperates with the groove to realize sliding connection, a plurality of anti-slip ridges 206 are arranged on the surface of the sliding sleeve 204, and an air jet mechanism is arranged above the winding roller 203.

[0021] When using the production device, firstly, the discharge mechanism is connected to the extruder filled with molten plastic, and the molten plastic is extruded in the form of a film through the discharge mechanism, and at the same time, the roller 102 is controlled to rotate clockwise so that the film-like plastic adheres to the surface of the roller 102. When the film-like plastic starts to move upward along with the roller 102, the jet mechanism sprays air downward so that the end of the plastic film is cooled and separated from the roller 102 after being impacted by the gas. At the same time, the groove rod 202 is controlled to rotate so that the winding roller 203 approaches the roller 102, and the plastic film contacts the winding roller 203. At this time, the winding roller 203 rotates counterclockwise to wind up the plastic film, thereby realizing the function of automatically winding up the plastic film. Compared with conventional production devices, there is no need for staff to manually place the plastic film on the winding roller 203, which saves time and can reduce the waste caused by cutting when manually placing the plastic film, further improving production efficiency and saving resources.

[0022] The multiple anti-skid ridges 206 on the surface of the sliding sleeve 204 can increase the friction between the sliding sleeve 204 and the plastic film, thereby facilitating the automatic winding of the plastic film without manual intervention. After the plastic film is wound, the staff slides and pulls out the sliding sleeve 204, thereby realizing the rapid unloading function.

[0023] See also Figure 3 ,

[0024] The discharge mechanism comprises a die head 401 , a strip opening 402 is formed at the lower end of the die head 401 , and a connecting pipe 403 is welded at the upper end of the die head 401 .

[0025] The connecting tube 403 is connected to the plastic extruder, and the molten plastic is extruded in a film shape through the strip opening 402 of the die head 401, thereby realizing the preliminary molding function of the plastic film.

[0026] See also Figure 4 ,

[0027] The jet mechanism comprises an air cylinder 303 , which is welded on the base 101 , a nozzle 301 is welded on the air cylinder 303 , a plurality of nozzles 302 are mounted on the lower end of the nozzle 301 , and a sliding plug 304 is slidably connected inside the air cylinder 303 .

[0028] By controlling the sliding plug 304 to slide into the air cylinder 303, the air pressure inside the air cylinder 303 increases, and the air inside the air cylinder 303 can be sprayed out through the multiple nozzles 302 on the nozzle 301, thereby achieving the function of separating the plastic film from the rotating roller 102.

[0029] See also Figure 4 ,

[0030] An air inlet pipe 308 is welded to the sliding plug 304 , and a one-way valve is installed in the air inlet pipe 308 and the nozzle 301 .

[0031] When the slide plug 304 slides toward the inside of the air cylinder 303, the one-way valve in the nozzle 301 opens, and the one-way valve in the air inlet pipe 308 closes. At this time, the air is discharged through the nozzle 301. When the slide plug 304 slides outward, the one-way valve in the nozzle 301 closes, and the one-way valve in the air inlet pipe 308 opens. At this time, negative pressure is generated in the air cylinder 303, and air enters the air cylinder 303 through the air inlet pipe 308, realizing the automatic inflation function.

[0032] See also Figure 1 and Figure 4 ,

[0033] The rotating roller 102 is fixedly connected with an eccentric wheel 307 via a key, the eccentric wheel 307 is rotatably connected with a connecting rod 306 via a bearing, the connecting rod 306 is rotatably connected with a push-pull rod 305 via a bearing, and the push-pull rod 305 is rotatably connected to the sliding plug 304 .

[0034] The rotation of the roller 102 drives the eccentric wheel 307 to rotate, and the eccentric wheel 307 drives the connecting rod 306 to make the push-pull rod 305 produce a push-pull action, thereby driving the sliding plug 304 to achieve reciprocating sliding, so that the nozzle 301 intermittently sprays air to achieve continuous cooling and separation of the plastic film.

[0035] See also Figure 1 ,

[0036] The base 101 is fixedly connected with a driving motor 103 via bolts, and the roller 102 is fixedly connected to the output shaft of the driving motor 103 via a coupling.

[0037] The driving motor 103 is used to drive the roller 102 to rotate, thereby realizing the production function of the plastic film, and at the same time provides driving force for the rotation of the eccentric wheel 307 to realize the intermittent jetting function.

[0038] See also Figure 6 ,

[0039] The base 101 is fixedly connected with a cylinder 201 by bolts, and the movable end of the cylinder 201 is fixedly connected with a sliding rod by bolts, and the sliding rod is slidably connected in the groove of the groove rod 202.

[0040] When the plastic film is rolled up, the moving end of the cylinder 201 is controlled to retract, so that the sliding rod at the moving end of the cylinder 201 can slide in the groove of the groove rod 202, and the groove rod 202 is pulled downward to rotate, so that the winding roller 203 is away from the rotating roller 102, thereby facilitating the removal of the rolled plastic film.

[0041] See also Figure 8 ,

[0042] A cutter 104 is fixedly connected to the base 101 by bolts. When the slot rod 202 rotates downward, the winding roller 203 also moves downward. At this time, the plastic film is in a stretched state, and then the plastic film will contact the sharp edge of the cutter 104 below, thereby realizing the function of automatically cutting the plastic film, making it convenient for the staff to remove the plastic film. No manual intervention is required in this process, which further reduces the labor intensity of the staff and avoids the risk of injury to the staff.

[0043] A process for producing a degradable plastic film, the process comprising the following steps:

[0044] Step 1: Connect the discharge mechanism to the extruder containing molten plastic, and extrude the molten plastic in a film form through the discharge mechanism;

[0045] Step 2: Control the roller 102 to rotate clockwise so that the film-like plastic adheres to the surface of the roller 102. When the film-like plastic starts to move upward along with the roller 102, the jet mechanism sprays air downward so that the end of the plastic film is cooled and separated from the roller 102 by the impact force of the gas.

[0046] Step 3: Control the groove rod 202 to rotate so that the winding roller 203 is close to the rotating roller 102, and the plastic film contacts the winding roller 203, and the winding roller 203 rotates counterclockwise to wind up the plastic film;

[0047] Step 4: By controlling the moving end of the cylinder 201 to retract, the sliding rod of the moving end of the cylinder 201 slides in the groove of the groove rod 202, and at the same time, the groove rod 202 is pulled to rotate downward, so that the winding roller 203 is away from the rotating roller 102;

[0048] Step 5: When the slot rod 202 rotates downward, the plastic film contacts the sharp edge of the cutter 104 below, and the plastic film is automatically cut.

[0049] A degradable plastic film, the raw materials of which include polyvinyl alcohol, corn starch and photosensitizer.

Claims

1. A degradable plastic film production device, characterized in that: The invention comprises a base (101), a rotating roller (102) is rotatably connected to the base (101), a discharging mechanism is fixedly connected to the upper end of the base (101), a rotating frame (202) is rotatably connected to the base (101), a groove rod (202) is rotatably connected to the rotating frame (202), a winding roller (203) is rotatably connected to the groove rod (202), a sliding sleeve (204) is slidably connected to the winding roller (203), a limiting strip (205) is arranged on the sliding sleeve (204), a corresponding groove is opened on the winding roller (203), the limiting strip (205) cooperates with the groove to realize sliding connection, a plurality of anti-slip ridges (206) are arranged on the surface of the sliding sleeve (204), and an air jet mechanism is arranged above the winding roller (203).

2. A degradable plastic film production device according to claim 1, characterized in that: The material discharging mechanism comprises a die head (401), a strip-shaped opening (402) is provided at the lower end of the die head (401), and a connecting pipe (403) is fixedly connected to the upper end of the die head (401).

3. A degradable plastic film production device according to claim 2, characterized in that: The jet mechanism comprises an air cylinder (303), the air cylinder (303) is fixedly connected to the base (101), a nozzle (301) is fixedly connected to the air cylinder (303), a plurality of nozzles (302) are installed at the lower end of the nozzle (301), and a sliding plug (304) is slidably connected inside the air cylinder (303).

4. A degradable plastic film production device according to claim 3, characterized in that: The sliding plug (304) is fixedly connected with an air inlet pipe (308), and both the air inlet pipe (308) and the nozzle (301) are equipped with a one-way valve.

5. A degradable plastic film production device according to claim 4, characterized in that: The rotating roller (102) is fixedly connected to an eccentric wheel (307), the eccentric wheel (307) is rotatably connected to a connecting rod (306), the connecting rod (306) is rotatably connected to a push-pull rod (305), and the push-pull rod (305) is rotatably connected to the sliding plug (304).

6. The degradable plastic film production device according to claim 1, characterized in that: The base (101) is fixedly connected to a driving motor (103), and the rotating roller (102) is fixedly connected to an output shaft of the driving motor (103).

7. The degradable plastic film production device according to claim 1, characterized in that: The base (101) is fixedly connected to a cylinder (201), the movable end of the cylinder (201) is fixedly connected to a sliding rod, and the sliding rod is slidably connected in the groove of the groove rod (202).

8. The degradable plastic film production device according to claim 1, characterized in that: A cutting knife (104) is fixedly connected to the base (101).

9. A process for producing a degradable plastic film, characterized in that: The process includes the following steps: Step 1: Connect the discharge mechanism to the extruder containing molten plastic, and extrude the molten plastic in a film form through the discharge mechanism; Step 2: Control the roller (102) to rotate clockwise so that the film-like plastic adheres to the surface of the roller (102); when the film-like plastic starts to move upward along with the roller (102), the jet mechanism sprays air downward so that the end of the plastic film is cooled and separated from the roller (102) by the impact force of the gas; Step 3: Control the groove rod (202) to rotate so that the winding roller (203) is close to the rotating roller (102), and the plastic film contacts the winding roller (203), and at the same time, the winding roller (203) rotates counterclockwise to wind up the plastic film; Step 4: By controlling the moving end of the cylinder (201) to retract, the sliding rod at the moving end of the cylinder (201) slides in the groove of the groove rod (202), and at the same time, the groove rod (202) is pulled to rotate downward, so that the winding roller (203) is away from the rotating roller (102); Step 5: When the slot rod (202) rotates downward, the plastic film contacts the sharp edge of the cutter (104) below, and the plastic film is automatically cut.

10. A degradable plastic film, the raw materials of which include: Polyvinyl alcohol, corn starch and photosensitizer.

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