CN-121989422-A - Plastic waste recycling production film feeding device and method

Abstract

The invention relates to the technical field of film production, in particular to a film feeding device and a film feeding method for plastic waste recycling production, wherein the film feeding device comprises a cooling component and a feeding component, the feeding component comprises two first feeding rollers, two supporting blocks, a driving screw and a conveying roller, the two supporting blocks are arranged on two sides of a tubular film in a sliding manner, the two first feeding rollers are respectively and rotatably arranged on the two supporting blocks and are used for flattening the tubular film, the driving screw is provided with two sections of opposite threads, the driving screw is in threaded connection with the two supporting blocks, and the conveying roller is arranged above the first feeding rollers and is used for outputting a flat film; the cooling assembly comprises a cooling channel, a fan, an air outlet pipe and a plurality of spray heads, wherein the cooling channel is arranged between the first feeding roller and the conveying roller, the fan is arranged on one side of the cooling channel, the air outlet pipe is arranged in the cooling channel, the spray heads are arranged on the air outlet pipe, and the film can be cooled directly after being pressed and conveyed again, so that the film property is more stable, and the production quality is improved.

Inventors

• HE YIFAN
• HE JINGCHANG
• Liang Kongbiao

Assignees

• 浙江高远新材料科技有限公司

Dates

Publication Date

20260508

Application Date

20260209

Claims (10)

1. 1. The plastic waste recycling production film feeding device comprises a supporting frame, a feeding structure, a mouth mold and a blowing structure, wherein the mouth mold is arranged on the supporting frame, the feeding structure is arranged below the mouth mold, the blowing structure is used for blowing a raw material drum extruded by the mouth mold into a tubular film, The device comprises a tubular film conveying device, a cooling assembly, a feeding assembly and a conveying assembly, wherein the feeding assembly comprises two first feeding rollers, two supporting blocks, a driving screw and a conveying roller, the two supporting blocks are arranged on two sides of the tubular film in a sliding mode, the two first feeding rollers are respectively arranged on the two supporting blocks in a rotating mode and used for flattening the tubular film, the driving screw is provided with two sections of opposite threads, the driving screw is in threaded connection with the two supporting blocks, and the conveying roller is arranged above the first feeding roller and used for outputting a flat film; The cooling assembly comprises a cooling channel, a fan, an air outlet pipe and a plurality of spray heads, wherein the cooling channel is arranged between the first feeding roller and the conveying roller, the fan is arranged on one side of the cooling channel, the air outlet pipe is arranged in the cooling channel, and the spray heads are arranged on the air outlet pipe.
2. 2. A plastic waste recycling film feeding apparatus as set forth in claim 1, wherein, The feeding assembly further comprises two connecting blocks, the cooling assembly further comprises control valves, the two connecting blocks are respectively connected with the two supporting blocks, the control valves are connected to the air outlet pipes, and the connecting blocks are used for contacting the control valves when moving along with the supporting blocks so as to control the air quantity of the air outlet pipes.
3. 3. A plastic waste recycling film feeding apparatus as set forth in claim 2, wherein, The control valve comprises a control rack, a gear, a rotating rod, a valve plate, a reset elastic piece and a valve body, wherein the valve body is fixed on the air outlet pipe, the valve plate is rotationally arranged in the valve body, the rotating rod is fixedly connected with the valve plate and is connected with the gear, the control rack is slidably arranged on the valve body and is meshed with the gear, the connecting block is arranged on one side of the control rack, and the reset elastic piece is arranged at one end of the control rack.
4. 4. A plastic waste recycling film feeding apparatus as set forth in claim 3, wherein, The feeding assembly further comprises a plurality of guide rollers, and the guide rollers are arranged below the supporting blocks and used for guiding the tubular film to be converged.
5. 5. A plastic waste recycling film feeding apparatus as set forth in claim 4, wherein, The guide roller comprises a guide roller body, a supporting rod, a sliding rod and an adjusting screw rod, wherein the supporting rod is fixed below the supporting block, the sliding rod is in sliding connection with the supporting rod, the adjusting screw rod is in rotating connection with the supporting rod and in threaded connection with the sliding rod, and the guide roller body is rotatably arranged on the sliding rod.
6. 6. A plastic waste recycling film feeding apparatus as set forth in claim 5, wherein, The cooling channel comprises a coaming, a plurality of guide plates, two laminating plates and two second elastic pieces, wherein the coaming is used for enclosing a flat film, the guide plates are arranged in the coaming, the two laminating plates are rotatably arranged below the coaming and are respectively contacted with the two first feeding rollers, and the two second elastic pieces are used for respectively supporting the two laminating plates.
7. 7. A plastic waste recycling film feeding apparatus as set forth in claim 6, wherein, The laminating board has the wind-guiding bent plate, the wind-guiding bent plate is located and is close to one side of first feed roll is used for guiding the air current first feed roll surface in order to right first feed roll cools down.
8. 8. A plastic waste recycling film feeding apparatus as set forth in claim 7, wherein, The plastic waste recycling production film feeding device further comprises a control assembly, and the control assembly is used for controlling the distance between the first feeding rollers according to the thickness of the produced film.
9. 9. A plastic waste recycling film feeding apparatus as set forth in claim 8, wherein, The control component comprises a parameter setting unit, an air pressure matching unit, an adjustment value calculating unit and an adjustment unit; The parameter setting unit is used for obtaining the thickness of the produced film; the air pressure matching unit is used for adjusting the air pressure value in the film based on the thickness parameter; The adjusting value calculating unit is used for obtaining an adjusting value of the first feeding roller based on the thickness parameter table lookup; The adjusting unit is used for adjusting the distance between the first feeding rollers based on the adjusting value.
10. 10. A plastic waste recycling film feeding method, which adopts the plastic waste recycling film feeding device according to any one of claims 1 to 9, characterized by comprising: Feeding raw materials in a molten state recovered from plastic wastes into an inlet die through a feeding structure to extrude a tubular film; blowing gas into the tubular film through the blowing structure to extend the tubular film into a tubular film; Passing the tubular film through two first feed rolls to form a flat film; The flat film passes through a cooling channel, and is cooled and shaped by cooler gas sprayed out by a spray head; The positioned flat film is sent out by a conveying roller.

Description

Plastic waste recycling production film feeding device and method Technical Field The invention relates to the technical field of film production, in particular to a film feeding device and a film feeding method for plastic waste recycling production. Background Plastic waste recycling is an environmentally friendly and resource efficient process for producing films by collecting and sorting various waste plastic products, such as packaging materials, plastic bottles and other plastic products, and converting the waste materials into recycled plastic particles through the steps of washing, crushing, melting and the like. These regenerated particles are used as raw materials and further processed into films by extrusion or other processes. In the film blowing process, the film is not cooled in the existing mode, and the film is not completely solidified and shaped and is directly pressed and conveyed. Because the film is still in a higher temperature state, the mechanical strength of the material is lower, the flexibility is too strong, the rigidity is insufficient, and the phenomena of local stretching, wrinkling, edge curling and even adhesion are very easy to occur in the flattening and traction processes, thereby reducing the production quality. Disclosure of Invention The invention aims to provide a plastic waste recycling production film feeding device and a plastic waste recycling production film feeding method, which aim to directly cool and convey a film after lamination, so that the film property is more stable, and the production quality is improved. In order to achieve the above object, in a first aspect, the present invention provides a plastic waste recycling film feeding device, comprising a support frame, a feeding structure, a die and a blowing structure, wherein the die is arranged on the support frame, the feeding structure is arranged below the die, the blowing structure is used for blowing raw materials extruded by the die into a tubular film, the plastic waste recycling film feeding device further comprises a cooling assembly and a feeding assembly, the feeding assembly comprises two first feeding rollers, two supporting blocks, a driving screw and a conveying roller, the two supporting blocks are arranged on two sides of the tubular film in a sliding manner, the two first feeding rollers are respectively and rotatably arranged on the two supporting blocks for flattening the tubular film, the driving screw is provided with two opposite threads, the driving screw is in threaded connection with the two supporting blocks, the conveying roller is arranged above the first feeding roller for outputting the flat film, the cooling assembly comprises a cooling channel, a fan, an air outlet pipe and a plurality of spray heads, the cooling channel is arranged between the first feeding rollers and the conveying rollers, the fan is arranged on one side of the cooling channel, and the air outlet pipe is arranged on one side of the cooling channel The feeding assembly further comprises two connecting blocks, the cooling assembly further comprises a control valve, the two connecting blocks are respectively connected with the two supporting blocks, the control valve is connected to the air outlet pipe, and the connecting blocks are used for contacting the control valve to control the air quantity of the air outlet pipe when moving along with the supporting blocks. The control valve comprises a control rack, a gear, a rotating rod, a valve plate, a reset elastic piece and a valve body, wherein the valve body is fixed on the air outlet pipe, the valve plate is rotationally arranged in the valve body, the rotating rod is fixedly connected with the valve plate and is connected with the gear, the control rack is slidably arranged on the valve body and is meshed with the gear, the connecting block is arranged on one side of the control rack, and the reset elastic piece is arranged at one end of the control rack. The feeding assembly further comprises a plurality of guide rollers, and the guide rollers are arranged below the supporting blocks and used for guiding the tubular film to be converged. The guide roller comprises a guide roller body, a supporting rod, a sliding rod and an adjusting screw rod, wherein the supporting rod is fixed below the supporting block, the sliding rod is in sliding connection with the supporting rod, the adjusting screw rod is in rotating connection with the supporting rod and in threaded connection with the sliding rod, and the guide roller body is rotatably arranged on the sliding rod. The cooling channel comprises a coaming, a plurality of guide plates, two laminating plates and two second elastic pieces, wherein the coaming is used for enclosing a flat film, the guide plates are arranged in the coaming, the two laminating plates are rotatably arranged below the coaming and are respectively contacted with the two first feeding rollers, and the two second elastic pieces are used