Biodegradable plastic bag film blowing equipment

Abstract

The utility model discloses a biodegradable plastic bag film blowing device which comprises a support and further comprises a pre-tightening blowing hole, the pre-tightening blowing hole comprises an air hole and a horn mouth, a base plate is arranged at the bottom of the horn mouth, a back plate is arranged on the periphery of the base plate, a pressing ring is installed on the surface of the base plate in an abutting mode, and a backup plate is arranged on the periphery of the pressing ring. Bolts and nuts are installed in the back plate and the backup plate in a screwed mode. According to the plastic film blowing device, the pre-tightening blowing hole assembly is arranged, so that before a plastic film is blown, the edge part of the plastic film is firstly pressed on the surface of the base plate through the pressing ring, then all the edge parts of the plastic film are sealed in a mode that the back plate and the backup plate are mutually locked, and the air leakage phenomenon is directly avoided; as an air blowing assembly of the device, hot air input into the air hood may have the problem of non-uniform heat, so that the hot air is uniformly mixed before air blowing by adopting a spiral blade rotating mode, the uniformity of the hot air is further improved, and non-uniform heating of a plastic film is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic bag film blowing, in particular to a biodegradable plastic bag film blowing device. Background Art

[0002] Biodegradable plastic bag blown film is a plastic film made of biodegradable materials through a blown film process, mainly used to make biodegradable plastic bags. This film can be decomposed by microorganisms in the natural environment, thereby reducing pollution to the environment. By using biodegradable plastic bag blown film, the environmental pollution problems caused by traditional plastic bags can be reduced, contributing to environmental protection.

[0003] A Chinese invention patent with application number CN115008730A discloses a film blowing device for manufacturing biodegradable plastic products. The patent arranges a dewatering component inside and at the upper end of a shell. The dewatering component stirs and heats the plastic particles entering the shell, so that the plastic particles are heated fully and evenly, and the water contained in the plastic particles is completely evaporated without melting the plastic particles. At the same time, the dewatering component stirs and quantitatively transports the plastic particles to a dust removal component arranged at the lower end of the dewatering component. The dust removal component blows wind obliquely upward toward the plastic particles, and the dust and the plastic particles are blown away. Then the dust removal component absorbs the dust, and the clean plastic particles without dust and water enter the next step, avoiding the influence of dust and moisture on the film blowing, thereby achieving the effect of improving the production efficiency of plastic products.

[0004] During the use of the plastic bag film blowing device in the prior art, the worker mainly holds the plastic film and puts it on the surface of the bell mouth to achieve blowing; however, the sealing range of this hand-held method is limited, and local leakage is prone to occur, which leads to uneven quality of the finished plastic bags. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a biodegradable plastic bag film blowing device.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A biodegradable plastic bag film blowing device, comprising a bracket and:

[0008] Pre-tightening air blowing hole, the pre-tightening air blowing hole includes an air hole and a bell mouth, a pad is arranged at the bottom of the bell mouth, a back plate is arranged around the pad, a clamping ring is installed on the surface of the pad, a support plate is arranged around the clamping ring, and bolts and nuts are tightened inside the back plate and the support plate.

[0009] According to a further technical solution, screw holes are arranged at corresponding positions on the back plate and the back plate, and the back plate and the back plate are arranged in a circular array.

[0010] Further technical solutions include:

[0011] The uniform heating component includes an air hood docked and installed on one side of the air hole, a hole is set on one side of the air hood, a frame is installed on the surface of the bracket, a hot air pump is installed on the top of the frame, and a conduit is installed on the output end of the hot air pump, and the conduit is plugged into the inside of the hole.

[0012] According to a further technical solution, an arc groove is provided inside the bracket, a heating tube is provided in the internal array of the arc groove, and the air hood is placed and installed on the surface of the heating tube.

[0013] Further technical solutions include:

[0014] A motor is installed on one side of the air hood, a main shaft is installed on the output end of the motor, a spiral blade is arranged on the surface of the main shaft, and the radius of the spiral blade is smaller than the radius of the air hood.

[0015] According to a further technical solution, a bearing frame is arranged inside the air hood, a bearing is installed inside the bearing frame, and the main shaft is rotatably installed inside the bearing.

[0016] According to a further technical solution, a ventilation gap is reserved between the bearing frame and the air hole.

[0017] Compared with the prior art, the utility model provides a biodegradable plastic bag film blowing device, which has the following beneficial effects:

[0018] By setting the pre-tightening blowing hole assembly, the edge of the plastic film is first pressed against the surface of the pad by the clamping ring before the plastic film is blown, and then all the edge parts of the plastic film are sealed by locking the back plate and the back plate, which directly avoids the occurrence of air leakage;

[0019] As the blowing component of this device, the hot air input into the air hood may have the problem of uneven heat. Therefore, we use the spiral blade rotation method to mix the hot air before blowing, thereby increasing the uniformity of the hot air to avoid the problem of uneven heating of the plastic film. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural schematic diagram of a biodegradable plastic bag film blowing device proposed by the utility model;

[0021] Figure 2 This is a structural schematic diagram of an explosion diagram of a biodegradable plastic bag film blowing device with pre-tightening blowing holes proposed by the utility model;

[0022] Figure 3 This is a structural schematic diagram of an exploded view of a heat-uniform component of a biodegradable plastic bag film blowing device proposed by the utility model;

[0023] Figure 4 The utility model provides a schematic structural diagram of the longitudinal section of a biodegradable plastic bag film blowing device.

[0024] In the figure: 1. bracket; 2. pre-tightening air hole; 3. uniform heating component; 4. air hole; 5. bell mouth; 6. pad; 7. backing plate; 8. clamping ring; 9. backing plate; 10. bolt; 11. nut; 12. bearing frame; 13. main shaft; 14. spiral blade; 15. motor; 16. air cover; 17. hole position; 18. frame; 19. hot air pump; 20. conduit; 21. bearing; 22. heating tube. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0026] Example 1: Reference Figure 1 - Figure 4 , a biodegradable plastic bag film blowing device, comprising a bracket 1, the bracket 1 is a supporting component of the device, and also includes:

[0027] Pre-tightening blow hole 2, this component seals the edge of the plastic bag before the plastic film is blown, thereby avoiding the occurrence of air leakage. Pre-tightening blow hole 2 includes air hole 4 and bell mouth 5, bell mouth 5 is the part where the plastic bag is sleeved; a pad 6 is provided at the bottom of the bell mouth 5, and the edge of the plastic bag rests on the surface of the pad 6; a back plate 7 is provided around the pad 6, and the back plate 7 and the back plate 9 cooperate with each other to realize the mutual locking of the clamping ring 8 and the pad 6; a clamping ring 8 is installed on the surface of the pad 6, and the clamping ring 8 is used to press the edge of the plastic bag on the surface of the pad 6 to achieve sealing. A back plate 9 is provided around the clamping ring 8, and bolts 10 and nuts 11 are screwed and installed inside the back plate 7 and the back plate 9, and the bolts 10 and nuts 11 are threaded connectors.

[0028] A biodegradable plastic bag film blowing device, wherein corresponding positions on a back plate 7 and a back plate 9 are provided with screw holes, and the back plate 7 and the back plate 9 are respectively arranged in a circular array, and the array arrangement can ensure the stability of the locking preload force.

[0029] A biodegradable plastic bag film blowing device, further comprising:

[0030] The uniform heating component 3 includes an air hood 16 that is docked and installed on one side of the air hole 4. The air hood 16 is a part where hot air circulates. A hole 17 is set on one side of the air hood 16, and a hot air pump 19 inputs hot air into the inside of the air hood 16 through the hole 17. The surface of the bracket 1 is covered with a frame 18, which is a supporting component of the hot air pump 19. The hot air pump 19 is installed on the top of the frame 18, and a conduit 20 is installed at the output end of the hot air pump 19, and the conduit 20 is plugged into the inside of the hole 17.

[0031] A biodegradable plastic bag film blowing device, wherein a bracket 1 is provided with an arc groove inside, and the arc groove is used to set up a heating pipe 22 and an air hood 16. The internal array of the arc groove is provided with a heating pipe 22, and the heating pipe 22 is used to achieve a uniform heating effect of the gas inside the air hood 16. The air hood 16 is placed and installed on the surface of the heating pipe 22.

[0032] A biodegradable plastic bag film blowing device, further comprising:

[0033] A motor 15 is installed on one side of the air hood 16, and the motor 15 achieves a uniform heating effect by rotating the solid spiral blade 14 of the main shaft 13. The main shaft 13 is installed on the output end of the motor 15, and the surface of the main shaft 13 is provided with a spiral blade 14, and the radius of the spiral blade 14 is smaller than the radius of the air hood 16 to avoid the problem of collision.

[0034] A biodegradable plastic bag film blowing device, a bearing frame 12 is mounted inside the air cover 16, and the bearing frame 12 is a component for mounting a bearing 21. The bearing frame 12 is mounted inside the bearing 21, and the main shaft 13 is rotatably mounted inside the bearing 21 to realize the rotation of the main shaft 13.

[0035] A biodegradable plastic bag film blowing device, wherein a ventilation gap is reserved between a bearing frame 12 and an air hole 4 to prevent hot air from being unable to pass through the air hole 4.

[0036] Working principle:

[0037] In the process of actual innovation, the utility model aims to avoid the following defects existing in the prior art: "During the use of the plastic bag film blowing device of the prior art, the staff mainly adopts the method of holding the plastic film and sleeve it on the surface of the bell mouth to realize the blowing; however, the sealing range of this hand-held method is limited, and local air leakage is prone to occur, which leads to uneven quality of the finished plastic bag." The pre-tightening air hole 2 and the uniform heating component 3 are specifically proposed;

[0038] First of all, we need to solve the problem of air leakage caused by uneven clamping of the raw materials of the plastic bag on the surface of the bell mouth 5. We set a pad 6 at the bottom of the bell mouth 5, put the edge of the raw material on the surface of the pad 6, and then press the clamping ring 8 on the surface of the pad 6 to achieve a sealing effect. In order to fix the pad 6 and the clamping ring 8, we set a backing plate 7 and a backing plate 9, and lock them through threaded connectors: bolts 10 and nuts 11. This setting directly solves the air leakage problem at the edge of the raw material.

[0039] As the gas transmission component of the device, the uniform heating component 3 blows air to the middle part of the raw material through the air hole 4, thereby achieving the effect of blow molding. The inside of the air hood 16 is where the hot air is formed, and the hot air is blown into the inside of the air hood 16 through the hot air pump 19 on the top of the frame 18; however, the hot air may have local heat changes inside the air hood 16, so I control the spiral blades 14 on the main shaft 13 through the motor 15 to mix the hot air, thereby making the heat of the gas more uniform. The hot air may have the problem of heat attenuation during the transmission process, so we set up a ring-shaped heating tube 22 in the inner surface array of the bracket 1 to heat the gas in real time, so that the heat of the hot air output to the air hole 4 is stable and sufficient heat is guaranteed.

[0040] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field within the technical scope disclosed by the utility model, according to the technical solution of the utility model and its utility model concept, shall be covered within the protection scope of the utility model.

Claims

1. A biodegradable plastic bag film blowing device, comprising a support (1), characterized in that: Also includes: A pre-tightening blow hole (2), the pre-tightening blow hole (2) comprising an air hole (4) and a bell mouth (5), a pad (6) is arranged at the bottom of the bell mouth (5), a backing plate (7) is arranged around the pad (6), a clamping ring (8) is mounted on the surface of the pad (6), a support plate (9) is arranged around the clamping ring (8), and bolts (10) and nuts (11) are screwed and installed inside the backing plate (7) and the support plate (9).

2. The biodegradable plastic bag film blowing equipment according to claim 1, characterized in that: Screw holes are arranged at corresponding positions on the back plate (7) and the back plate (9), and the back plate (7) and the back plate (9) are arranged in a circular array.

3. The biodegradable plastic bag film blowing equipment according to claim 1, characterized in that: Also includes: A uniform heat distribution component (3), the uniform heat distribution component (3) comprising an air hood (16) dockedly mounted on one side of an air hole (4), a hole (17) being arranged on one side of the air hood (16), a frame (18) being mounted on the surface of the bracket (1), a hot air pump (19) being mounted on the top of the frame (18), a conduit (20) being mounted on the output end of the hot air pump (19), and the conduit (20) being plugged into the interior of the hole (17).

4. The biodegradable plastic bag film blowing equipment according to claim 3, characterized in that: The support (1) is provided with an arc-shaped groove inside, and a heating tube (22) is arranged in an array inside the arc-shaped groove. The gas cover (16) is placed and installed on the surface of the heating tube (22).

5. The biodegradable plastic bag film blowing equipment according to claim 3, characterized in that: Also includes: A motor (15) is installed on one side of the air hood (16), a main shaft (13) is installed on the output end of the motor (15), a spiral blade (14) is arranged on the surface of the main shaft (13), and the radius of the spiral blade (14) is smaller than the radius of the air hood (16).

6. The biodegradable plastic bag film blowing equipment according to claim 5, characterized in that: A bearing frame (12) is mounted inside the air cover (16), a bearing (21) is installed inside the bearing frame (12), and the main shaft (13) is rotatably mounted inside the bearing (21).

7. The biodegradable plastic bag film blowing equipment according to claim 6, characterized in that: A ventilation gap is reserved between the bearing frame (12) and the air hole (4).

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