Packaging bag forming device

Abstract

The packaging bag forming device comprises a film conveying mechanism, an overturning mechanism, a material conveying mechanism, a driving mechanism, a sealing mechanism and a cutting mechanism, the film conveying mechanism is used for conveying a plastic film to the overturning mechanism, the overturning mechanism is used for overturning the plastic film into a cylindrical shape, and the driving mechanism is used for driving the plastic film to move; the sealing mechanism is used for sealing a plastic film to form a plastic bag, the conveying mechanism is used for conveying a connecting ring into the plastic bag, and the cutting mechanism is used for cutting the plastic bag; the turnover mechanism comprises a turnover plate, a forming cylinder and a supporting column, the forming cylinder wraps the outer side of the supporting column, an annular gap is formed between the forming cylinder and the supporting column and used for allowing the plastic film to pass through, and the turnover plate is used for guiding the plastic film to enter the gap; the device integrates multiple functions of film feeding, overturning, material conveying, driving, sealing, cutting and the like, plastic films can be manufactured into complete plastic bags, meanwhile, the connecting rings are conveyed to the plastic bags to be packaged, and the packaging efficiency of the connecting rings is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the packaging bag forming technical field, in particular to a packaging bag forming device. BACKGROUND

[0002] The connecting ring is also called a joint ring, which is a component for connecting components on mechanical or electrical equipment, especially for connecting two metal pipes on refrigeration equipment. In a refrigeration system such as a refrigerator or an air conditioner, the pipe materials of different functional areas are often different, such as copper pipes and aluminum pipes, which need to be seamlessly connected to form a refrigerant circulation loop. The connecting ring cooperates with the cold extrusion connection technology to connect metal pipes of different materials together to achieve seamless connection.

[0003] After the connecting ring is processed and qualified, the qualified connecting ring needs to be packaged by a packaging bag for subsequent transportation, storage and sales. Before the connecting ring is packaged, a plastic film needs to be made into a packaging bag. The existing packaging bag making equipment can only make a plastic film into a packaging bag, and the connecting ring needs to be loaded into the packaging bag and the packaging bag needs to be sealed, so the packaging process is complex and the packaging efficiency is low. Therefore, a packaging bag forming device is needed to improve the packaging efficiency of the connecting ring. CONTENT OF THE INVENTION

[0004] The main purpose of the application is to provide a packaging bag forming device to solve the problem of complex existing connecting ring packaging process.

[0005] To achieve the above purpose, the packaging bag forming device provided by the application comprises a film feeding mechanism, a turnover mechanism, a material conveying mechanism, a driving mechanism, a sealing mechanism and a cutting mechanism. The film feeding mechanism is used to feed a plastic film to the turnover mechanism. The turnover mechanism is used to turn the plastic film into a cylindrical shape. The driving mechanism is used to drive the plastic film to move. The sealing mechanism is used to seal the plastic film to form a plastic bag. The material conveying mechanism is used to convey the connecting ring into the plastic bag. The cutting mechanism is used to cut the plastic bag.

[0006] The turnover mechanism comprises a turnover plate, a forming cylinder and a support column. The forming cylinder is wrapped around the outside of the support column. An annular gap is provided between the forming cylinder and the support column for the plastic film to pass through. The turnover plate is used to guide the plastic film into the gap.

[0007] Optionally, the first end of the turnover plate is a straight line structure and extends to a position close to the film feeding mechanism. The second end of the turnover plate is a curved structure and is connected to the upper end of the forming cylinder. The turnover plate is a curved surface structure formed from the first end to the second end.

[0008] Optionally, the turnover plate is integrally formed with the forming cylinder, and the connection between the turnover plate and the forming cylinder is a circular arc transition structure; the first end of the turnover plate and the lower end of the forming cylinder are further fixedly connected through a reinforcing plate.

[0009] Optionally, a plurality of uniformly distributed protrusions are arranged on the curved surface of the turnover plate, and the cross sections of the protrusions are all arc structures.

[0010] Optionally, the feeding mechanism comprises a feeding channel, the feeding channel is arranged in the support column, and the feeding channel is used for conveying the connecting ring into the plastic bag.

[0011] Optionally, the driving mechanism is arranged on the side surface of the support column, the driving mechanism comprises a driving wheel connected to the driving shaft of a driving motor, the side surface of the driving wheel is provided with a driven wheel, a belt is sleeved outside the driving wheel and the driven wheel, and the belt is in contact with the plastic film.

[0012] Optionally, the driving mechanism is mounted on a first telescopic structure, and the first telescopic structure is used for driving the driving mechanism to move close to or away from the support column.

[0013] Optionally, the sealing mechanism comprises a side sealing mechanism and an end sealing mechanism, a linear crack is arranged on the side surface of the forming cylinder, the crack is used for the side edge of the plastic film to extend out, the side sealing mechanism is arranged on the side surface of the support column corresponding to the crack, the side sealing mechanism comprises two first heating plates, the two first heating plates are mounted on a second telescopic structure, and the second telescopic structure is used for driving the two first heating plates to clamp or release the side edge of the plastic film; the end sealing mechanism is arranged below the support column, the end sealing mechanism comprises two second heating plates, the two second heating plates are mounted on a third telescopic structure, and the third telescopic structure is used for driving the two second heating plates to clamp or release the end surface of the plastic film.

[0014] Optionally, the cutting mechanism comprises two cutting knives, accommodating grooves are arranged on the two second heating plates, the two cutting knives are arranged in the accommodating grooves respectively, the cutting knives are mounted on a fourth telescopic structure, and the fourth telescopic structure is used for driving the cutting knives to cut the plastic bag.

[0015] Optionally, the lower end of the support column is fixedly connected with two supporting rods, the two supporting rods are symmetrically distributed on the two sides of the support column, and the distance between the ends of the two supporting rods away from the support column is greater than the distance between the ends of the two supporting rods close to the support column.

[0016] The technical scheme of the application is characterized in that the film feeding mechanism is used for feeding the plastic film to the turnover mechanism, the turnover mechanism is used for turning the plastic film into a cylindrical shape, the driving mechanism is used for driving the plastic film to move, the sealing mechanism is used for sealing the plastic film to form a plastic bag, the material feeding mechanism is used for feeding a connecting ring into the plastic bag, and the cutting mechanism is used for cutting the plastic bag; the turnover mechanism comprises a turnover plate, a forming cylinder and a supporting column, the forming cylinder is wrapped outside the supporting column, an annular gap is arranged between the forming cylinder and the supporting column, the gap is used for the plastic film to pass through, and the turnover plate is used for guiding the plastic film to enter the gap; the film feeding mechanism feeds the plastic film to the turnover mechanism, the turnover plate guides the plastic film to turn and enter the gap between the forming cylinder and the supporting column, the plastic film moves in the gap and is turned into a cylindrical shape, the driving mechanism drives the plastic film to move, then the sealing mechanism seals the side surface and the lower end of the plastic film to form an open plastic bag, the material feeding mechanism feeds the connecting ring into the plastic bag, finally the sealing mechanism seals the upper end of the plastic bag, and the cutting mechanism cuts the plastic bag from the plastic film; the device integrates multiple functions such as film feeding, turning, material feeding, driving, sealing and cutting, can realize the plastic film into a complete plastic bag, at the same time, the connecting ring is fed into the plastic bag for packaging, the whole process can realize an automatic production process, improves the packaging efficiency of the connecting ring, and reduces manual operation. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor based on the drawings shown.

[0018] Figure 1 FIG. 1 is a structural schematic view of a packaging bag forming device of the present application;

[0019] Figure 2 FIG. 2 is a structural schematic view of a film turning mechanism in the packaging bag forming device of the present application.

[0020] DETAILED DESCRIPTION

[0021] 1, film feeding mechanism; 101, conveying roller; 2, turnover mechanism; 201, turnover plate; 202, forming cylinder; 203, support column; 204, reinforcing plate; 205, crack; 3, driving mechanism; 301, driving motor; 302, belt; 303, first telescopic structure; 4, sealing mechanism; 410, side sealing mechanism; 411, first heating plate; 412, second telescopic structure; 420, end sealing mechanism; 421, second heating plate; 422, third telescopic structure; 5, containing groove; 6, supporting rod; 7, supporting mechanism; 90, plastic film; 91, plastic bag.

[0022] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0024] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another component, it can be directly on the other component or indirectly disposed on the other component; when a component is referred to as being "connected to" another component, it can be directly connected to the other component or indirectly connected to the other component.

[0025] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or component referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0026] In addition, if the description of "first", "second" and the like is involved in the embodiments of the present application, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In addition, the meaning of "and / or" appearing throughout the text is that it includes three parallel schemes. For example, "A and / or B" includes A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art. When the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the scope of protection claimed by the present application.

[0027] It should be understood that the structure, proportion, size and the like shown in the drawings of the specification are only used to cooperate with the disclosed content of the specification for understanding and reading by those skilled in the art, and do not define the limiting conditions for the implementation of the present application, and therefore do not have technical significance. Any modification of structure, change of proportion relationship or adjustment of size, which does not affect the effects and purposes that can be achieved by the present application, should still fall within the scope of the disclosed technical content.

[0028] After the connecting ring is processed and qualified, the qualified connecting ring needs to be packaged by a packaging bag for later transportation, storage and sales. Before the connecting ring is packaged, a plastic film needs to be made into a packaging bag. The existing packaging bag making equipment can usually only make the plastic film into a packaging bag, and the connecting ring needs to be loaded into the packaging bag and then the packaging bag is sealed, so the packaging process is relatively complex and the packaging efficiency is not high. Therefore, a packaging bag forming device is needed to improve the packaging efficiency of the connecting ring.

[0029] Therefore, the present application provides a packaging bag forming device.

[0030] In the embodiments of the present application, reference Figures 1 to 2The packaging bag forming device comprises a film feeding mechanism 1, a turnover mechanism 2, a conveying mechanism, a driving mechanism 3, a sealing mechanism 4 and a cutting mechanism, the film feeding mechanism 1 is used for conveying a plastic film 90 to the turnover mechanism 2, the turnover mechanism 2 is used for turning the plastic film 90 into a cylindrical shape, the driving mechanism 3 is used for driving the plastic film 90 to move, the sealing mechanism 4 is used for sealing the plastic film 90 to form a plastic bag 91, the conveying mechanism is used for conveying a connecting ring into the plastic bag 91, and the cutting mechanism is used for cutting the plastic bag 91; the turnover mechanism 2 comprises a turnover plate 201, a forming cylinder 202 and a supporting column 203, the forming cylinder 202 is wrapped outside the supporting column 203, an annular gap is arranged between the forming cylinder 202 and the supporting column 203, the gap is used for the plastic film 90 to pass through, and the turnover plate 201 is used for guiding the plastic film 90 to enter the gap.

[0031] Specifically, the film feeding mechanism 1 guides and conveys the plastic film 90 to the turnover mechanism 2, the turnover mechanism 2 realizes the turnover of the plastic film 90 by means of the gap between the forming cylinder 202 and the supporting column 203 and the guidance of the turnover plate 201. The driving mechanism 3 drives the plastic film 90 to move, the conveying mechanism conveys the connecting ring through the channel, the sealing mechanism 4 fuses and seals the edge of the plastic film 90 by means of heating and the like, and the cutting mechanism cuts the continuous plastic bag 91 into single bags.

[0032] With reference to Figure 2 , the first end of the turnover plate 201 is in a straight line structure and extends to a position close to the film feeding mechanism 1, the second end of the turnover plate 201 is in a curved line structure and is connected with the upper end of the forming cylinder 202, the turnover plate 201 is in a curved surface structure formed from the first end to the second end, the plastic film 90 contacts the first end of the straight line structure of the turnover plate 201 after coming out of the film feeding mechanism 1, then moves along the curved surface structure of the turnover plate 201 to the second end, and finally enters the gap between the forming cylinder 202 and the supporting column 203, the straight line structure of the turnover plate 201 is convenient for docking with the film feeding mechanism 1 to receive the plastic film 90, the curved line structure is connected with the forming cylinder 202 and can smoothly guide the plastic film 90 to enter the gap, this structure design enables the plastic film 90 to enter the turnover mechanism 2 more stably and efficiently, improves the success rate and stability of the turnover of the plastic film 90, and avoids damaging the surface of the plastic film 90, which is beneficial to ensuring the quality of subsequent packaging bag forming.

[0033] With reference to Figure 2 , the turnover plate 201 and the forming cylinder 202 are in an integrally formed structure, and the connection part of the turnover plate 201 and the forming cylinder 202 is in a circular arc transition structure; the integrally formed structure reduces the connecting gap and avoids the plastic film 90 from being stuck or damaged during movement, and the circular arc transition makes the plastic film 90 move more smoothly; the first end of the turnover plate 201 and the lower end of the forming cylinder 202 are further fixedly connected through a reinforcing plate 204; the reinforcing plate 204 enhances the structural strength of the turnover plate 201 and prevents it from deforming under stress.

[0034] Specifically, a plurality of uniformly distributed protrusions (not shown in the figure) are arranged on the curved surface of the turnover plate 201, and the cross section of each protrusion is in an arc structure. The arc structure of the protrusions forms a certain gap between the plastic film 90 and the turnover plate 201 during the movement of the plastic film 90, which can reduce the contact area between the plastic film 90 and the turnover plate 201, reduce the friction, and at the same time play a certain guiding role when the plastic film 90 moves, so that the plastic film 90 can more accurately enter the gap between the forming cylinder 202 and the support column 203. The frictional loss of the plastic film 90 during the turnover process is reduced, the conveying efficiency of the plastic film 90 is improved, and the flatness of the plastic film 90 is also guaranteed, thereby improving the forming quality of the packaging bag.

[0035] With reference to Figure 1 , the film feeding mechanism 1 comprises a winding roller (not shown in the figure) and a plurality of conveying rollers 101. The winding roller is used to store the plastic film 90 by winding, and the conveying rollers 101 are used to guide and tension the plastic film 90. The winding roller is used to store the plastic film 90. The conveying rollers 101 change the movement direction of the plastic film 90 and apply a certain tension to the plastic film 90, so that the plastic film 90 is conveyed in a flat and tensioned state, avoiding problems such as wrinkles and slackness, providing stable input of the plastic film 90 for subsequent turnover and other operations, and being beneficial to improving the precision and quality of the packaging bag forming.

[0036] Specifically, the conveying mechanism comprises a conveying channel (not shown in the figure), which is arranged in the support column 203 and used to convey the connecting ring into the plastic bag 91. The connecting ring is conveyed into the support column 203 through the conveying channel, and when the plastic film 90 is turned into a cylindrical shape and moves around the support column 203, the connecting ring is output from the conveying channel and enters the plastic bag 91. This improves the automation of production, reduces the workload and error of manual placement of the connecting ring, and ensures the consistency of the product.

[0037] With reference to Figure 1 , the driving mechanism 3 is arranged on the side surface of the support column 203, and comprises a driving wheel connected to the driving shaft of a driving motor 301. A driven wheel is arranged on the side surface of the driving wheel. A belt 302 is sleeved on the outer side of the driving wheel and the driven wheel, and the belt 302 is in contact with the plastic film 90. The driving motor 301 drives the driving wheel to rotate. The driving wheel is connected to the driven wheel through the belt 302, and the belt 302 is in contact with the plastic film 90. When the driving wheel rotates, it drives the plastic film 90 to move through the belt 302. This provides a stable driving mode for the plastic film 90. The belt 302 transmission has a certain buffering effect, which can reduce the damage to the plastic film 90, and the rotating speed of the driving wheel can be adjusted according to the needs to control the moving speed of the plastic film 90, thereby improving the flexibility of production.

[0038] With reference to Figure 1The driving mechanism 3 is installed on the first telescopic structure 303, and the first telescopic structure 303 is used to drive the driving mechanism 3 to be close to or away from the support column 203; when it is needed to drive the plastic film 90 to move, the first telescopic structure 303 drives the driving mechanism 3 to be close to the support column 203, so that the belt 302 is in contact with the plastic film 90 and generates a friction force; when it is not needed to drive or other operations are performed, the first telescopic structure 303 drives the driving mechanism 3 to be away from the support column 203, so that the contact between the belt 302 and the plastic film 90 is released; the driving of the plastic film 90 can be flexibly controlled according to the actual needs of production, unnecessary friction between the belt 302 and the plastic film 90 is avoided when it is not needed to drive, wear is reduced, and at the same time, other operations such as adjustment of the position of the plastic film 90 are facilitated.

[0039] Reference Figure 1 The sealing mechanism 4 includes a side sealing mechanism 410 and an end sealing mechanism 420. The side of the forming cylinder 202 is provided with a linear crack 205, and the crack 205 is used for the side edge of the plastic film 90 to extend out. The side sealing mechanism 410 is arranged at the side of the support column 203 corresponding to the crack 205, and the side sealing mechanism 410 includes two first heating plates 411. The two first heating plates 411 are installed on a second telescopic structure 412, and the second telescopic structure 412 is used to drive the two first heating plates 411 to clamp or release the side edge of the plastic film 90. The end sealing mechanism 420 is arranged below the support column 203, and the end sealing mechanism 420 includes two second heating plates 421. The two second heating plates 421 are installed on a third telescopic structure 422, and the third telescopic structure 422 is used to drive the two second heating plates 421 to clamp or release the end face of the plastic film 90. For side sealing, the side edge of the plastic film 90 extends out from the crack 205 on the side of the forming cylinder 202. The second telescopic structure 412 drives the two first heating plates 411 to be close to and clamp the side edge of the plastic film 90, and the side edge is fused and sealed by heating. For end sealing, the end face of the plastic film 90 is below the support column 203. The third telescopic structure 422 drives the two second heating plates 421 to be close to and clamp the end face of the plastic film 90, and the end face is fused and sealed by heating. Effective sealing of the side and end face of the plastic bag 91 is realized, the sealing quality is high, and the sealing property and integrity of the plastic bag 91 can be ensured.

[0040] It should be noted that for end sealing, the end sealing mechanism 420 can simultaneously realize sealing of the top end of the plastic bag 91 located below which the connecting ring has been loaded and sealing of the bottom end of the plastic film 90 located above, so that the efficiency of plastic bag 91 forming and connecting ring packaging can be improved.

[0041] Specifically, the cutting mechanism includes two cutting knives (not shown in the figure), and the two second heating plates 421 are both provided with accommodating grooves 5, and the two cutting knives are arranged in the accommodating grooves 5 respectively, the cutting knives are installed on the fourth telescopic structure, and the fourth telescopic structure is used for driving the cutting knives to cut the plastic bags 91; when the plastic bags 91 are sealed, the fourth telescopic structure drives the cutting knives to extend out of the accommodating grooves 5 on the second heating plates 421, and the plastic bags 91 are cut; the automatic cutting of the plastic bags 91 is realized, the production efficiency is improved, the cutting position is accurate, the size consistency of each plastic bag 91 can be ensured, and the quality of the product is improved.

[0042] With reference to Figure 1 The lower end of the support column 203 is fixedly connected with two supporting rods 6, the two supporting rods 6 are symmetrically distributed on the two sides of the support column 203, and the two supporting rods 6 are both outwardly inclined, that is, the distance between the ends, away from the support column 203, of the two supporting rods 6 is greater than the distance between the ends, close to the support column 203, of the two supporting rods 6; when the cylindrical plastic after being sealed on the side is moved to the outside of the two supporting rods 6, the cylindrical plastic film 90 will be gradually deformed into a flat shape because the distance between the ends, away from the support column 203, of the two supporting rods 6 is greater than the distance between the ends, close to the support column 203, of the two supporting rods 6, so that the end face sealing mechanism 420 can conveniently clamp and seal the end face of the plastic film 90.

[0043] With reference to Figure 1 The device also includes a support mechanism 7, the film feeding mechanism 1, the turnover mechanism 2, the material conveying mechanism, the driving mechanism 3, the sealing mechanism 4 and the cutting mechanism described above are all directly or indirectly installed on the support mechanism 7, so that each component can stably operate.

[0044] Specifically, the first telescopic structure 303, the second telescopic structure 412, the third telescopic structure 422 and the fourth telescopic structure are all structures (prior art) capable of driving the linear movement of components, and can be driven by means of air pressure, hydraulic pressure, electricity and the like.

[0045] The technical scheme of the application is characterized in that the film feeding mechanism is used for feeding plastic film to the turnover mechanism, the turnover mechanism is used for turning the plastic film into a cylindrical shape, the driving mechanism is used for driving the plastic film to move, the sealing mechanism is used for sealing the plastic film to form a plastic bag, the material conveying mechanism is used for conveying a connecting ring into the plastic bag, and the cutting mechanism is used for cutting the plastic bag; the turnover mechanism comprises a turnover plate, a forming cylinder and a support column, the forming cylinder is wrapped outside the support column, an annular gap is arranged between the forming cylinder and the support column, the gap is used for the plastic film to pass through, and the turnover plate is used for guiding the plastic film to enter the gap; the film feeding mechanism feeds the plastic film to the turnover mechanism, the turnover plate guides the plastic film to turn and enter the gap between the forming cylinder and the support column, the plastic film moves in the gap and is turned into a cylindrical shape, the driving mechanism drives the plastic film to move, then the sealing mechanism seals the side surface and the lower end of the plastic film to form an open plastic bag, the material conveying mechanism conveys the connecting ring into the plastic bag, finally the sealing mechanism seals the upper end of the plastic bag, and the cutting mechanism cuts the plastic bag from the plastic film; the device integrates multiple functions such as film feeding, turning, material conveying, driving, sealing and cutting, can realize the plastic film into a complete plastic bag, at the same time, the connecting ring is conveyed into the plastic bag for packaging, the whole process can realize an automatic production process, the packaging efficiency of the connecting ring is improved, and manual operation is reduced.

[0046] The above is only an optional embodiment of the application, and does not limit the patent scope of the application, and any equivalent structural transformation, direct / indirect application in other related technical fields based on the inventive concept of the application and the content of the specification and drawings are included in the patent protection scope of the application.

Claims

1. A packaging bag forming device, characterized in that, The application relates to a plastic bag making machine. The turning mechanism comprises a turning plate, a forming cylinder and a supporting column, the forming cylinder is arranged on the outer side of the supporting column, an annular gap is arranged between the forming cylinder and the supporting column, and the gap is used for the plastic film to pass through; and the turning plate is used for guiding the plastic film to enter the gap. The first end of the turning plate is a straight structure and extends to a position close to the film feeding mechanism; the second end of the turning plate is a curved structure and is connected with the upper end of the forming cylinder; and the turning plate is a curved surface structure formed from the first end to the second end.

2. The packaging bag forming apparatus according to claim 1, wherein The turning plate and the forming cylinder are integrally formed, and the connection part of the turning plate and the forming cylinder is a circular arc structure; the first end of the turning plate is fixedly connected with the lower end of the forming cylinder through a reinforcing plate.

3. The packaging bag forming apparatus according to claim 2, wherein A plurality of uniformly distributed protrusions are arranged on the curved surface of the turning plate, and the cross sections of the protrusions are all arc structures.

4. The packaging bag forming apparatus according to claim 2 or 3, wherein The feeding mechanism comprises a feeding channel, the feeding channel is arranged in the supporting column, and the feeding channel is used for feeding the connecting ring into the plastic bag.

5. The packaging bag forming apparatus according to claim 1, wherein The driving mechanism is arranged on the side of the supporting column, the driving mechanism comprises a driving wheel, the driving wheel is connected with the driving shaft of a driving motor, a driven wheel is arranged on the side of the driving wheel, a belt is arranged on the outer sides of the driving wheel and the driven wheel, and the belt is in contact with the plastic film.

6. The packaging bag forming apparatus of claim 1, wherein The driving mechanism is mounted on a first telescopic structure, and the first telescopic structure is used for driving the driving mechanism to move close to or away from the supporting column.

7. The packaging bag forming apparatus of claim 6, wherein The sealing mechanism comprises a side sealing mechanism and an end sealing mechanism, a linear crack is arranged on the side of the forming cylinder, the crack is used for the side edge of the plastic film to extend out, the side sealing mechanism is arranged on the side of the supporting column corresponding to the crack, the side sealing mechanism comprises two first heating plates, the two first heating plates are mounted on a second telescopic structure, and the second telescopic structure is used for driving the two first heating plates to clamp or release the side edge of the plastic film; the end sealing mechanism is arranged below the supporting column, the end sealing mechanism comprises two second heating plates, the two second heating plates are mounted on a third telescopic structure, and the third telescopic structure is used for driving the two second heating plates to clamp or release the end surface of the plastic film.

8. The packaging bag forming apparatus of claim 1, wherein The cutting mechanism comprises two cutting knives, accommodating grooves are arranged on the two second heating plates, the two cutting knives are arranged in the accommodating grooves respectively, the cutting knives are mounted on a fourth telescopic structure, and the fourth telescopic structure is used for driving the cutting knives to cut the plastic bag.

9. The packaging bag forming apparatus of claim 8 wherein, ​ 10. The bag forming apparatus of claim 1 wherein, The lower end of the support column is fixedly connected with two supporting rods, the two supporting rods are symmetrically distributed on the two sides of the support column, and the distance between the ends of the two supporting rods away from the support column is greater than the distance between the ends of the two supporting rods close to the support column.

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