Degradable plastic bag film blowing device
By adjusting the shackle of the surface of the degradable plastic bag by staggered tensioning unit and anti-oblique cylinder structure, the problem of uneven thickness during the production process is solved, uniform winding and rapid drum replacement are achieved, and screw wear and rust is avoided.
Patent Information
- Application Number
- CN202421832286.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-30
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-07-30
AI Technical Summary
During the production process of biodegradable plastic bags, locally degradable plastic bags are partially superimposed due to folding, resulting in uneven thickness during wrapping, affecting subsequent use.
The staggered tensioning unit and anti-absorbing cylinder structure are adopted, and the rollers are supported by supporting columns to form staggered butts, combined with semi-circular arc plate extrusion, adjust the wrinkles and superposition positions of the plastic bag surface, and quickly replace the rollers with the hydraulic system.
Effectively smooth the wrinkles and superposition of the plastic bag surface to ensure uniform winding, avoid tilting and uneven thickness problems caused by folding, and simplify drum replacement through hydraulic systems to reduce screw wear and rust.
Smart Images
Figure CN223173559U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of plastic blown film, and specifically relates to a degradable plastic bag blown film device. Background Art
[0002] Degradable plastic bags are currently produced environmentally friendly plastic bags. To avoid plastic pollution and solve the problem that traditional plastic bags are difficult to degrade, degradable plastic bags are being widely popularized. With the development of technology, various materials that can replace traditional PE plastics have emerged, including high molecular materials such as PLA, PBA, and PBS, all of which can replace traditional PE plastic bags. Environmentally friendly plastic bags are currently widely used, and there are large-scale application scopes for supermarket shopping bags, continuous roll fresh-keeping bags, plastic films, etc. in China.
[0003] Currently, in the prior art, degradable plastic bags need to be subjected to plastic film blowing, cooling, and winding processes during production. There are two types of winding racks during the winding process, namely manual winding racks and automatic winding racks. The automatic winding rack forms the plastic bags into shape by extruding them through multiple winding drums, and then winds them up through the winding drums. However, during the process of blowing and winding the plastic bags, during the transportation of some degradable plastic bags, some local degradable plastic bags will fold together, which results in some local positions of the single-layer degradable plastic bags having multiple layers stacked due to folding. As the degradable plastic bags continue to wind, with the stacking of layers, it causes problems with differences in the thickness of subsequent degradable plastic bags.
[0004] Therefore, the utility model provides a degradable plastic bag blown film device. Content of the Utility Model
[0005] In order to make up for the deficiencies of the prior art and solve at least one technical problem proposed in the background art.
[0006] The technical solution adopted by the utility model to solve its technical problems is as follows: A degradable plastic bag blown film device described in the utility model includes a foundation platform plate and a degradable plastic bag movably sleeved on the outer surface of the top of the foundation platform plate, a support arm plate fixedly connected to one side surface of the foundation platform plate, a hydraulic pump detachably installed at one side edge position of the top of the support arm plate. An alternating tensioning unit is fixedly installed on the top surface of the support arm plate. The alternating tensioning unit includes a support column fixedly connected to the top surface of the support arm plate. One end of the support column is movably sleeved with a drum, and the drum is connected to the output end of the hydraulic pump. A slant prevention cylinder wound around the outer surface of the degradable plastic bag is fixedly connected to one side surface of the drum, and a semi-circular arc plate is movably sleeved on the outer surface of the slant prevention cylinder.
[0007] Preferably, one end of the hydraulic pump is fixedly connected with a motor, the output end of the motor is fixedly connected with a second docking rod, a groove is formed on the outer surface of the second docking rod, and hydraulic rods are fixedly installed on the surface of the output end of the motor and around the periphery of the second docking rod.
[0008] Preferably, one inner side wall surface of one end of the groove is movably sleeved with a swing arm, the other end surface of the swing arm is hingedly sleeved on the output end of the hydraulic rod, and a semi-circular extrusion strip that is movably attached to the inner side wall surface of the roller is fixedly connected to the middle position of the outer surface of the swing arm.
[0009] Preferably, first docking rods are fixedly connected to both side edge positions on the outer surface of the anti-slant cylinder, and an elastic wire is fixedly connected to the middle position on the outer surface of the anti-slant cylinder.
[0010] Preferably, the other end of the elastic wire is fixedly connected to the outer surface of the semi-circular arc plate, and limit sleeves that are movably sleeved on one end of the first docking rods are fixedly connected to both side edge positions on the surface of the semi-circular arc plate.
[0011] Preferably, a film blowing machine is fixedly installed at the middle position on the top surface of the foundation base plate, and a blower that is arranged on the outer surface of the film blowing machine is fixedly installed on one side surface of the foundation base plate.
[0012] Preferably, a raw material conveyor that is arranged at the input end of the film blowing machine is fixedly installed on the other side surface of the foundation base plate, a limit air head that is arranged at the output end of the blower is fixedly installed on the inner side wall surface of the film blowing machine, and a limit arm sleeve that is movably sleeved on the outer surface of the degradable plastic bag is fixedly connected to the inner side wall surface of the foundation base plate.
[0013] The beneficial effects of the present utility model are as follows: [[ID=X]] [[ID=Y]]
[0014] 1. For the degradable plastic bag film blowing device of the present utility model, multiple rollers are supported by cooperating with support columns. By using the different heights of the multiple support columns, the multiple rollers are formed into staggered docking, so that the degradable plastic bag passes through the surfaces of the staggered rollers and the anti-slant cylinder. The anti-slant cylinder with staggered docking is used to tighten the degradable plastic bag, and then the semi-circular arc plate on the outer surface of the anti-slant cylinder is pressed against the surface of the degradable plastic bag. At the same time, by using the arc with a convex middle position and sunken both side positions of the semi-circular arc plate, when the degradable plastic bag fits on the surface of the semi-circular arc plate, the two side positions of the degradable plastic bag will slide along the semi-circular arc plate to both sides. Thus, when the degradable plastic bag is being transported, some wrinkled and superimposed positions on the surface of the degradable plastic bag are smoothed and adjusted, so that when the degradable plastic bag is being wound, it will not cause the degradable plastic bag to tilt due to folding and cannot be effectively wound.
[0015] 2. For a biodegradable plastic bag blown film device according to the present utility model, after the biodegradable plastic bag is wound around the surface of the drum, the swing arm is pulled to one side edge position in cooperation with the hydraulic rod. When the swing arm retracts, the semi-circular extrusion strip on the outer surface of the swing arm is separated from the inner wall surface of the drum. Then, the motor is pulled to one side edge position by the hydraulic pump, so that the second docking rod is separated from the inner wall surface of the drum, and the drum and the biodegradable plastic bag on its surface are collected. After replacing the new drum, the swing arm is pushed in cooperation with the hydraulic rod. Since one end of the swing arm is movably sleeved on the inner wall surface of the groove, under the push of the hydraulic rod, the surface of the swing arm will tilt upward, and then the semi-circular extrusion strip on the outer surface of the swing arm is attached to the inner wall surface of the drum, so that the second docking rod can be pressed and fixed on the inner wall surface of the drum. The drum is quickly replaced by extrusion, avoiding the long-term use of screws for fixation. The anti-rust layer on the surface of the screws will be worn during continuous use, and then the surface of the screws will rust due to the oxidation reaction of the air. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The present utility model will be further described below with reference to the accompanying drawings.
[0017] Figure 1 is a three-dimensional view of the present utility model;
[0018] Figure 2 is a three-dimensional structural schematic diagram of the foundation base plate in the present utility model;
[0019] Figure 3 is a three-dimensional structural schematic diagram of the support arm plate in the present utility model;
[0020] Figure 4 is a three-dimensional structural schematic diagram of the hydraulic pump in the present utility model;
[0021] Figure 5 is a three-dimensional structural schematic diagram of the anti-slant cylinder in the present utility model;
[0022] Figure 6 is a three-dimensional structural schematic diagram of the semi-circular arc plate in the present utility model.
[0023] In the figure: 11, foundation base plate; 111, raw material conveyor; 112, blower; 113, blown film machine; 114, limiting air head; 115, limiting arm sleeve; 12, biodegradable plastic bag; 13, support arm plate; 131, support column; 132, drum; 133, anti-slant cylinder; a1, first docking rod; a2, limiting sleeve; a3, elastic wire; a4, semi-circular arc plate; 14, hydraulic pump; 141, motor; 142, second docking rod; 143, groove; 144, hydraulic rod; 145, swing arm; 146, semi-circular extrusion strip. Detailed implementation manners
[0024] In order to make the technical means, creative features, achieved purposes and functions realized by the present utility model easy to understand, the present utility model will be further described below in conjunction with specific implementation manners.
[0025] As Figures 1 to 6 shown, a biodegradable plastic bag blowing film device according to an embodiment of the present utility model includes a foundation base plate 11 and a biodegradable plastic bag 12 movably sleeved on the outer surface of the top of the foundation base plate 11, a support arm plate 13 fixedly connected to one side surface of the foundation base plate 11, a hydraulic pump 14 detachably installed at one side edge position of the top of the support arm plate 13, and an interleaved tensioning unit fixedly installed on the top surface of the support arm plate 13. The interleaved tensioning unit includes a support column 131 fixedly connected to the top surface of the support arm plate 13. One end of the support column 131 is movably sleeved with a roller 132, and the roller 132 is connected to the output end of the hydraulic pump 14. A slant prevention cylinder 133 fixedly connected to the outer surface of the roller 132 and wound around the outer surface of the biodegradable plastic bag 12 is movably sleeved on the outer surface of the slant prevention cylinder 133 with a semi-circular arc plate a4;
[0026] Cooperate with the support column 131 to support a plurality of rollers 132. Utilize the different heights of the plurality of support columns 131 to form an interleaved butt joint of the plurality of rollers 132, so that the biodegradable plastic bag 12 passes through the surfaces of the interleaved rollers 132 and the slant prevention cylinder 133. Tighten the biodegradable plastic bag 12 by using the interleaved butt joint of the slant prevention cylinder 133, and then press and fit the semi-circular arc plate a4 on the outer surface of the slant prevention cylinder 133 against the surface of the biodegradable plastic bag 12. At the same time, utilize the arc that the middle position of the semi-circular arc plate a4 is convex and the two sides are sunken. When the biodegradable plastic bag 12 fits on the surface of the semi-circular arc plate a4, the two sides of the biodegradable plastic bag 12 will slide along the semi-circular arc plate a4 to both sides. Furthermore, when the biodegradable plastic bag 12 is being transported, some wrinkled and stacked positions on the surface of the biodegradable plastic bag 12 are smoothed and adjusted, so that when the biodegradable plastic bag 12 is being wound, the biodegradable plastic bag 12 will not be inclined due to folding, resulting in an ineffective winding effect.
[0027] As Figures 1 to 2As shown, a blown film machine 113 is fixedly installed on the top surface of the foundation platen 11 and at the middle position. A blower 112 is fixedly installed on one side surface of the foundation platen 11 and is arranged on the outer surface of the blown film machine 113. A raw material conveyor 111 is fixedly installed on the other side surface of the foundation platen 11 and is arranged at the input end of the blown film machine 113. A limiting air head 114 is fixedly installed on the inner side wall surface of the blown film machine 113 and is arranged at the output end of the blower 112. A limiting arm sleeve 115 is fixedly connected to the inner side wall surface of the foundation platen 11 and is movably sleeved on the outer surface of the degradable plastic bag 12;
[0028] The raw materials are extruded by the blown film machine 113 through blowing, and then the blower 112 blows air into the limiting air head 114 inside the blown film machine 113. The discharged gas will expand inside the degradable plastic bag 12. While the limiting arm sleeve 115 limits the position of the expanded degradable plastic bag 12, it also controls the size of the expansion of the degradable plastic bag 12, avoiding the local over-expansion of the degradable plastic bag 12 caused by the blowing of the air source, resulting in uneven tension of the degradable plastic bag 12 and the effect of local bubble protrusions.
[0029] As Figure 1 and Figures 3 to 6 As shown, one end of a hydraulic pump 14 is fixedly connected to a motor 141. The output end of the motor 141 is fixedly connected to a second docking rod 142. A groove 143 is formed on the outer surface of the second docking rod 142. Hydraulic rods 144 are fixedly installed on the output end surface of the motor 141 and around the periphery of the second docking rod 142. A swing arm 145 is movably sleeved on the inner side wall surface of the groove 143 at one end. The other end surface of the swing arm 145 is hingedly sleeved on the output end of the hydraulic rod 144. A semi-circular extrusion strip 146 is fixedly connected to the outer surface of the swing arm 145 and is movably attached to the inner side wall surface of the roller 132. First docking rods a1 are fixedly connected to the outer surface of the anti-slant cylinder 133 and at both side edge positions. An elastic wire a3 is fixedly connected to the outer surface of the anti-slant cylinder 133 and at the middle position. The other end of the elastic wire a3 is fixedly connected to the outer surface of the semi-circular arc plate a4. Limiting sleeves a2 are fixedly connected to the surface of the semi-circular arc plate a4 and at both side edge positions and are movably sleeved on one end of the first docking rod a1;
[0030] After the degradable plastic bag 12 is wound around the surface of the roller 132, the hydraulic rod 144 is used to pull the swing arm 145 to one side edge position. When the swing arm 145 retracts, the semi-circular extrusion strip 146 on the outer surface of the swing arm 145 is disengaged from the inner wall surface of the roller 132. Then, the hydraulic pump 14 is used to pull the motor 141 to one side edge position, so that the second docking rod 142 is separated from the inner wall surface of the roller 132, and the roller 132 and the degradable plastic bag 12 on its surface are collected. After replacing the new roller 132, the hydraulic rod 144 is used to push the swing arm 145. Since one end of the swing arm 145 is movably sleeved on the inner wall surface of the groove 143, under the push of the hydraulic rod 144, the surface of the swing arm 145 will tilt upward, and then the semi-circular extrusion strip 146 on the outer surface of the swing arm 145 is attached to the inner wall surface of the roller 132, so that the second docking rod 142 can be pressed and fixed on the inner wall surface of the roller 132. The roller 132 is quickly replaced by extrusion, avoiding the long-term use of screws for fixation. The anti-rust layer on the surface of the screws will be worn during continuous use, resulting in rust on the surface of the screws due to the oxidation reaction of the air.
[0031] Working principle: The blowing machine 113 is used to extrude the raw material by blowing film. Then, the blower 112 blows air into the limiting air head 114 inside the blowing machine 113. The discharged gas will expand inside the degradable plastic bag 12. While the limiting arm sleeve 115 is used to limit the position of the expanded degradable plastic bag 12, the expansion size of the degradable plastic bag 12 is controlled to prevent the blowing of the air source from causing excessive expansion of a local position of the degradable plastic bag 12, resulting in uneven tension of the degradable plastic bag 12 and the appearance of air bubbles bulging at a local position.
[0032] Cooperate with the support columns 131 to support the multiple rollers 132. By using the different heights of the multiple support columns 131, the multiple rollers 132 are formed into staggered butt joints, so that the degradable plastic bag 12 passes through the surfaces of the staggered rollers 132 and the anti-slant cylinder 133. The anti-slant cylinder 133 with staggered butt joints tightens the degradable plastic bag 12, and then the semi-circular arc plate a4 on the outer surface of the anti-slant cylinder 133 is squeezed and attached to the surface of the degradable plastic bag 12. At the same time, due to the arc with a convex middle position and sunken sides of the semi-circular arc plate a4, when the degradable plastic bag 12 is attached to the surface of the semi-circular arc plate a4, the two sides of the degradable plastic bag 12 will slide along the semi-circular arc plate a4 to both sides. Thus, when the degradable plastic bag 12 is being transported, some wrinkled and stacked positions on the surface of the degradable plastic bag 12 are smoothed and adjusted, so that when the degradable plastic bag 12 is being wound, it will not cause the degradable plastic bag 12 to tilt due to folding and unable to achieve an effective winding effect;
[0033] When the degradable plastic bag 12 is wound around the surface of the roller 132, cooperate with the hydraulic rod 144 to pull the swing arm 145 to one side edge position. When the swing arm 145 retracts, the semi-circular extrusion strip 146 on the outer surface of the swing arm 145 disengages from the inner wall surface of the roller 132. Then, through the hydraulic pump 14, the motor 141 is pulled to one side edge position, so that the docking rod two 142 separates from the inner wall surface of the roller 132, and the roller 132 and the degradable plastic bag 12 on its surface are collected. After replacing the new roller 132, cooperate with the hydraulic rod 144 to push the swing arm 145. Since one end of the swing arm 145 is movably sleeved on the inner wall surface of the groove 143, under the push of the hydraulic rod 144, the surface of the swing arm 145 will tilt upward, and then the semi-circular extrusion strip 146 on the outer surface of the swing arm 145 is attached to the inner wall surface of the roller 132, so that the docking rod two 142 can be squeezed and fixed on the inner wall surface of the roller 132. The roller 132 is quickly replaced by extrusion, avoiding the situation that the anti-rust layer on the surface of the screw will be worn during continuous use, and then the surface of the screw will rust due to the oxidation reaction of the air.
[0034] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.
Claims
1. A biodegradable plastic bag blowing film device, comprising a foundation base plate (11) and a biodegradable plastic bag (12) movably sleeved on the outer surface of the top of the foundation base plate (11), a support arm plate (13) fixedly connected to one surface of the foundation base plate (11), and a hydraulic pump (14) detachably installed at one edge position of the top of the support arm plate (13), characterized in that: On the top surface of the support arm plate (13), an interleaved tensioning unit is fixedly installed. The interleaved tensioning unit includes a support column (131) fixedly connected to the top surface of the support arm plate (13). One end of the support column (131) is movably sleeved with a roller (132), and this roller (132) is connected to the output end of a hydraulic pump (14). On one side surface of the roller (132), an anti-slant cylinder (133) wound and sleeved on the outer surface of the degradable plastic bag (12) is fixedly connected. On the outer surface of the anti-slant cylinder (133), a semi-circular arc plate (a4) is movably sleeved.
2. The biodegradable plastic bag blowing film device according to claim 1, wherein: One end of the hydraulic pump (14) is fixedly connected with a motor (141). The output end of the motor (141) is fixedly connected with a second docking rod (142). On the outer surface of the second docking rod (142), a groove (143) is opened. On the output end surface of the motor (141) and at the peripheral position around the second docking rod (142), a hydraulic rod (144) is fixedly installed.
3. The biodegradable plastic bag blown film device according to claim 2, wherein: On the inner wall surface at one end of the groove (143), a swing arm (145) is movably sleeved. The other end surface of the swing arm (145) is hingedly sleeved on the output end of the hydraulic rod (144). On the outer surface of the swing arm (145) and at the middle position, a semi-circular extrusion strip (146) that is movably attached to the inner wall surface of the roller (132) is fixedly connected.
4. The biodegradable plastic bag blowing film device according to claim 3, characterized in that: On the outer surface of the anti-slant cylinder (133) and at the two side edge positions, a first docking rod (a1) is fixedly connected. On the outer surface of the anti-slant cylinder (133) and at the middle position, an elastic wire (a3) is fixedly connected.
5. The biodegradable plastic bag blowing film device according to claim 4, characterized in that: The other end of the elastic wire (a3) is fixedly connected to the outer surface of the semi-circular arc plate (a4). On the surface of the semi-circular arc plate (a4) and at the two side edge positions, a limit sleeve (a2) movably sleeved on one end of the first docking rod (a1) is fixedly connected.
6. The biodegradable plastic bag blowing film device according to claim 1, characterized in that: On the top surface of the foundation base plate (11) and at the middle position, a film blowing machine (113) is fixedly installed. On one side surface of the foundation base plate (11), a blower (112) arranged on the outer surface of the film blowing machine (113) is fixedly installed.
7. A biodegradable plastic bag blown film device according to claim 6, characterized in that: On the other side surface of the foundation base plate (11), a raw material conveyor (111) arranged at the input end of the film blowing machine (113) is fixedly installed. On the inner wall surface of the film blowing machine (113), a limit air head (114) arranged at the output end of the blower (112) is fixedly installed. On the inner wall surface of the foundation base plate (11), a limit arm sleeve (115) movably sleeved on the outer surface of the degradable plastic bag (12) is fixedly connected.