Tube film packaging machine

Abstract

The utility model discloses a technical solution to solve the above technical problems: a tubular film packaging machine, comprising: a frame; a bag opening and sealing unit, the bag opening and sealing unit comprising a mounting plate, a first translation drive device, a first cutting and sealing mechanism, a second cutting and sealing mechanism, at least one opening and closing transmission mechanism, a bag clamping mechanism, and a film feeding mechanism; the second cutting and sealing mechanism is provided with a cutting device, and the opposite sides of the first cutting and sealing mechanism and the second cutting and sealing mechanism are both provided with a heat sealing unit and a bag pulling unit; the first translation drive device is used to drive the first cutting and sealing mechanism to slide back and forth horizontally. The utility model is a tubular film packaging machine, which adopts a one-to-two mode, so that the first cutting and sealing mechanism and the second cutting and sealing mechanism are synchronously opened and closed with the bag clamping mechanism as the center, thereby improving the synchronization of the bag opening action of the tubular film bag, preventing the tubular film bag from falling off during the bag opening action, and having good working stability.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging equipment, in particular to a tube film packaging machine. Background Art

[0002] With the progress of society and the development of science and technology, people's requirements for product packaging are getting higher and higher. A packaging machine is a machine that seals the product after it is put into the packaging bag. After the product is put into the packaging bag, in order to keep the product sealed and preserved, maintain product quality, and avoid product loss, the packaging bag needs to be sealed. For example, a tube film packaging machine disclosed in announcement number CN209321378U includes: a frame; a packaging film feeding mechanism for providing installation and transportation for the tube bag roll, the packaging film feeding mechanism is connected to the frame, and the packaging film feeding mechanism includes a winding roller and a material guiding device; a transverse sealing mechanism, which is arranged on the frame, and the transverse sealing device includes a bag mouth sealing device and a cutting device; a bag supporting mechanism, which is located below the transverse sealing mechanism, and the bag supporting mechanism includes a material supporting and beating device; a control box, which is arranged on one side of the frame, and the control box connects the packaging film feeding mechanism, the transverse sealing mechanism and the bag supporting mechanism.

[0003] The transverse sealing mechanism of the packaging machine mostly adopts suction cups on both sides of the packaging bag, and the suction cup on one side is driven by a cylinder to extend to open the tubular film bag. The transverse sealing mechanism needs a large stroke to open the bag, and there are problems such as low synchronization of the bag opening action and easy falling of the packaging bag. Utility Model Content

[0004] The utility model aims to solve the deficiencies of the above-mentioned technology and is a tubular film packaging machine designed. It adopts a one-to-two mode, so that the first cutting and sealing mechanism and the second cutting and sealing mechanism are opened and closed synchronously with the bag clamping mechanism as the center, thereby improving the synchronization of the bag opening action of the tubular film bag, preventing the tubular film bag from falling off during the bag opening action, and having better working stability.

[0005] In order to solve the above technical problems, the technical solution of the utility model is: a tube film packaging machine, comprising:

[0006] frame;

[0007] The bag opening, sealing and cutting unit comprises a mounting plate, a first translation driving device, a first cutting and sealing mechanism, a second cutting and sealing mechanism, at least one opening and closing transmission mechanism, a bag clamping mechanism and a film feeding mechanism; the mounting plate is horizontally arranged on the frame, the first cutting and sealing mechanism and the second cutting and sealing mechanism are arranged relatively to each other and move horizontally relative to the mounting plate, the second cutting and sealing mechanism is provided with a cutting device for cutting the tubular film bag, the first cutting and sealing mechanism and the second cutting and sealing mechanism are provided with heat sealing units for heat-sealing the incision of the tubular film bag and bag pulling units for clamping the edge of the incision of the tubular film bag on opposite sides; the bag clamping mechanism is provided on the mounting plate, and the bag clamping mechanism is located below the first cutting and sealing mechanism and the second cutting and sealing mechanism, the bag clamping mechanism is used to clamp the two sides of the tubular film bag to assist in bag opening; the film feeding mechanism is arranged on the first cutting and sealing mechanism, the film feeding mechanism is used to transport the tubular film bag to the bag clamping mechanism; the first translation driving device is arranged on the mounting plate, the first translation driving device is used to drive the first cutting and sealing mechanism to slide back and forth horizontally, and the opening and closing transmission mechanism is used to link the opposite sides of the first cutting and sealing mechanism and the second cutting and sealing mechanism to synchronously open and close with the bag clamping mechanism as the center.

[0008] Preferably, two opening and closing transmission mechanisms are provided, the two opening and closing transmission mechanisms are symmetrically arranged on the mounting plate, and the first translation drive device is located between the two opening and closing transmission mechanisms.

[0009] Preferably, the opening and closing transmission mechanism includes a first driving rod, a second driving rod, and a transmission gear. The first driving rod and the second driving rod are spaced apart and arranged in parallel. The first driving rod is arranged on the first cutting and sealing mechanism, and the second driving rod is arranged on the second cutting and sealing mechanism. The transmission gear is rotatably connected to the mounting plate, and the transmission gear is located between the adjacent first driving rod and the second driving rod, and driving sections are provided on opposite sides of the first driving rod and the second driving rod, and the driving sections are meshed with the transmission gear.

[0010] Preferably, a connecting plate is provided between the two second driving rods, the connecting plate is provided with a first guide sleeve for sliding connection of the first driving rod, and the movable end of the first translation driving device is fixedly connected to the connecting plate.

[0011] Preferably, a second guide sleeve for sliding connection of the second driving rod is provided on the mounting plate.

[0012] Preferably, the bag clamping mechanism comprises a transmission rod, two pneumatic clamping jaws arranged opposite to each other on the transmission rod, and a bag clamping driving device for driving the two pneumatic clamping jaws to open and close along the length direction of the transmission rod.

[0013] Preferably, the heat sealing unit comprises an upper heat sealing head and a lower heat sealing head, and the bag pulling unit is located between the upper heat sealing head and the lower heat sealing head.

[0014] Preferably, the bag pulling unit includes an abutment platform, two film absorbing parts symmetrically arranged on the abutment platform, a clamping part arranged between the two film absorbing parts, and a first lifting drive device for driving the clamping part to perform lifting and lowering movements. The clamping part is located above the abutment platform, and the abutment platform cooperates with the clamping part to clamp the bag mouth of the tubular film bag.

[0015] Preferably, the cutting device includes a blade and a telescopic driving device for driving the blade to move in translation, the blade is located between the upper heat sealing head and the lower heat sealing head on the second cutting and sealing mechanism, the space between the upper heat sealing head and the lower heat sealing head of the first cutting and sealing mechanism cooperates with the blade, and the bottom surface of the blade is in conflict with the top surface of the clamping portion.

[0016] Preferably, it also includes a tube film conveying device, a lifting and dropping device, a supporting device, and a controller placed on the frame;

[0017] The tubular film conveying device is used to convey the tubular film bag to the film conveying mechanism;

[0018] The lifting and dropping device is located above the bag opening and cutting and sealing unit, and includes a dropping hopper and a second lifting drive device for driving the dropping hopper to move up and down. The discharge port of the dropping hopper is hinged with two hopper baffles arranged opposite to each other, and a dropping drive device for driving the two hopper baffles to open or close;

[0019] The material supporting device is located below the bag opening and sealing unit, and comprises a material supporting frame, a lifting frame arranged on the material supporting frame, a material supporting tray hinged on the lifting frame, a turning driving device arranged on the lifting frame, and an adjusting member for adjusting the height position of the lifting frame, wherein the movable end of the turning driving device is hinged to the bottom of the material supporting tray;

[0020] The tube film conveying device, the bag opening, sealing and cutting unit, the lifting and dropping device and the supporting device are all connected to and controlled by the controller.

[0021] Compared with the prior art, the beneficial effects of the utility model are:

[0022] The utility model discloses a tubular film packaging machine, wherein a bag opening, sealing and cutting unit delivers a tubular film bag to a bag clamping mechanism through a film feeding mechanism, a first cutting and sealing mechanism and a second cutting and sealing mechanism are arranged relatively to each other and move horizontally relative to a mounting plate, and when the first cutting and sealing mechanism and the second cutting and sealing mechanism are closed together, a cutting device cuts the tubular film bag, and an incision is a bag opening, or two heat-sealing units heat-seal the incision of the tubular film bag; when the first cutting and sealing mechanism and the second cutting and sealing mechanism are separated from each other, two drawstring units synchronously clamp the edge of the incision of the tubular film bag, and the bag clamping mechanism clamps the two sides of the tubular film bag to perform an auxiliary bag opening action, and in this process, a one-to-two method is adopted, so that the first cutting and sealing mechanism and the second cutting and sealing mechanism synchronously open and close the bag clamping mechanism with the bag clamping mechanism as the center, thereby improving the synchronization of the bag opening action of the tubular film bag, preventing the tubular film bag from falling off during the bag opening action, and having good working stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic structural diagram of the packaging machine in the embodiment;

[0024] Figure 2 It is a schematic diagram of the structure of the bag opening, sealing and cutting unit, the tube film conveying device, the lifting and dropping device, and the supporting device in the embodiment;

[0025] Figure 3 The structure of the bag opening and sealing unit in the embodiment is shown in FIG. Figure 1 ;

[0026] Figure 4 is a cross-sectional view of a bag opening, sealing and cutting unit in an embodiment;

[0027] Figure 5 The structure of the bag opening and sealing unit in the embodiment is shown in FIG. Figure 2 ;

[0028] Figure 6 2 is a schematic structural diagram of a bag clamping mechanism in an embodiment;

[0029] Figure 7 is a schematic structural diagram of a first cutting and sealing mechanism in an embodiment;

[0030] Figure 8 is a structural schematic diagram of the second cutting and sealing mechanism in the embodiment;

[0031] Fig. 9 Schematic diagram of the structure of the cutting device, the heat sealing unit and the bag pulling unit in the embodiment;

[0032] Fig.10 2 is a schematic diagram of the structure of the tube film conveying device in the embodiment;

[0033] Fig.11 2 is a schematic diagram of the structure of the lifting and dropping device in the embodiment;

[0034] Fig.12Schematic diagram of the structure of the supporting device in the embodiment.

[0035] In the figure: 1, frame; 2, tube film conveying device; 21, coiling rack; 22, film guide roller; 23, film feeding roller; 24, film feeding drive motor; 3, lifting and dropping device; 31, dropping hopper; 32, second lifting and dropping drive device; 301, hopper baffle; 302, dropping drive device; 303, drive unit; 304, drive plate; 305, drive slot; 4, supporting device; 41, supporting rack; 42, lifting rack; 43, supporting tray; 44, flip drive device; 45, adjusting member; 5, controller; 6, mounting plate; 7, first translation drive device; 8, first cutting and sealing mechanism; 9, second cutting and sealing mechanism; 10, opening and closing transmission mechanism; 101, first driving Moving rod; 102, second driving rod; 103, transmission gear; 1001, driving section; 11, bag clamping mechanism; 111, transmission rod; 112, pneumatic clamp; 113, bag clamping driving device; 1101, transmission seat; 12, film feeding mechanism; 13, cutting device; 131, blade; 132, telescopic driving device; 14, heat sealing unit; 141, upper heat sealing head; 142, lower heat sealing head; 15, bag pulling unit; 151, abutment platform; 152, film suction member; 153, clamping part; 154, first lifting driving device; 16, connecting plate; 17, first guide sleeve; 18, second guide sleeve; 401, connecting part; 402, shaking device. DETAILED DESCRIPTION

[0036] The present invention will be further described below by way of embodiments in conjunction with the accompanying drawings.

[0037] refer to Figures 1 to 12 A tubular film packaging machine includes a frame 1, and a bag opening, sealing and cutting unit, a tubular film conveying device 2, a lifting and blanking device 3, a supporting device 4, and a controller 5 arranged on the frame 1. The tubular film conveying device 2 is arranged on the feeding side of the bag opening, sealing and cutting unit, and the lifting and blanking device 3 and the supporting device 4 are arranged on the discharging side of the bag opening, sealing and cutting unit correspondingly up and down. The tubular film conveying device 2, the bag opening, sealing and cutting unit, the lifting and blanking device 3, and the supporting device 4 are all connected to and controlled by the controller 5.

[0038] The tubular film conveying device 2 includes a roll rack 21, a plurality of film guide rollers 22 arranged on the roll rack 21, a film delivery roller 23, and a film delivery drive motor 24 for driving the film delivery roller 23 to rotate, and is used to flatten the rolled tubular film bag and deliver the film. The roll rack 21 can be equipped with a punching component driven by a cylinder so as to punch the tubular film bag during the film delivery process. This is a prior art and will not be described in detail here.

[0039] The bag opening and sealing unit includes a mounting plate 6, a first translation drive device 7, a first cutting and sealing mechanism 8, a second cutting and sealing mechanism 9, two opening and closing transmission mechanisms 10, a bag clamping mechanism 11, and a film feeding mechanism 12. The mounting plate 6 is horizontally arranged on the frame 1, the first cutting and sealing mechanism 8 and the second cutting and sealing mechanism 9 are arranged opposite to each other, and the film feeding mechanism 12 is arranged on the first cutting and sealing mechanism 8.

[0040] A heat sealing unit 14 and a bag pulling unit 15 are provided on opposite sides of the first cutting and sealing mechanism 8 and the second cutting and sealing mechanism 9; the heat sealing unit 14 includes an upper heat sealing head 141 and a lower heat sealing head 142, and the bag pulling unit 15 is located between the upper heat sealing head 141 and the lower heat sealing head 142; the bag pulling unit 15 includes an abutment platform 151, two film absorbing members 152 symmetrically arranged on the abutment platform 151, a clamping portion 153 arranged between the two film absorbing members 152, and a first lifting drive device 154 for driving the clamping portion 153 to perform lifting movement, the first lifting drive device 154 is fixedly connected to the first cutting and sealing mechanism 8, the first lifting drive device 154 can be a telescopic cylinder, the clamping portion 153 is located above the abutment platform 151, and the abutment platform 151 and the clamping portion 153 cooperate to clamp the edge portion of the bag opening of the tubular film bag.

[0041] The second cutting and sealing mechanism 9 is provided with a cutting device 13 for cutting the tubular film bag on the side wall close to the first cutting and sealing mechanism 8. The cutting device 13 includes a blade 131 and a telescopic driving device 132 for driving the blade 131 to move in translation. The blade 131 is located between the upper heat sealing head 141 and the lower heat sealing head 142 on the second cutting and sealing mechanism 9. The space between the upper heat sealing head 141 and the lower heat sealing head 142 of the first cutting and sealing mechanism 8 cooperates with the blade 131. The telescopic driving device 132 is composed of two symmetrically arranged telescopic cylinders, and the piston rod of the telescopic cylinder passes through the end of the second cutting and sealing mechanism 9 and is fixedly connected to the blade 131. The bottom surface of the blade 131 conflicts with the top surface of the clamping part 153, which is used to limit the lifting and lowering activities of the clamping part 153.

[0042] The two opening and closing transmission mechanisms 10 are symmetrically arranged on the mounting plate 6, and the first translation driving device 7 is arranged on the mounting plate 6, and the first translation driving device 7 is located between the two opening and closing transmission mechanisms 10. The opening and closing transmission mechanism 10 includes a first driving rod 101, a second driving rod 102, and a transmission gear 103. The first driving rod 101 and the second driving rod 102 are arranged in parallel and spaced apart. The first driving rod 101 is arranged on the first cutting and sealing mechanism 8, and the second driving rod 102 is arranged on the second cutting and sealing mechanism 9. A connecting plate 16 is arranged between the two second driving rods 102, and the connecting plate 16 is provided with a first guide sleeve 17 for the first driving rod 101 to be slidably connected. The first translation driving device 7 can be a telescopic cylinder, and the movable end of the first translation driving device 7 is fixedly connected to the connecting plate 16. The mounting plate 6 is provided with a first guide sleeve 17 for the second driving rod 101 to be slidably connected. The second guide sleeve 18 is slidably connected to the movable rod 102, so that the first cutting and sealing mechanism 8 and the second cutting and sealing mechanism 9 can move horizontally relative to the mounting plate 6. Preferably, the two sides of the first cutting and sealing mechanism 8 are respectively sleeved and slidably connected with the two second driving rods 102; the transmission gear 103 is rotatably connected to the mounting plate 6, and the transmission gear 103 is located between the adjacent first driving rods 101 and the second driving rods 102, and the first driving rod 101 and the second driving rod 102 are both provided with a driving section 1001 on the opposite sides thereof, and the driving section 1001 is a rack, and the driving section 1001 meshes with the transmission gear 103. The first translation drive device 7 is used to drive the first cutting and sealing mechanism 8 to slide back and forth horizontally, and the opening and closing transmission mechanism 10 is used to link the opposite sides of the first cutting and sealing mechanism 8 and the second cutting and sealing mechanism 9 to synchronously open and close with the bag clamping mechanism 11 as the center.

[0043] The bag clamping mechanism 11 is arranged on the mounting plate 6, and the bag clamping mechanism 11 is located below the first cutting and sealing mechanism 8 and the second cutting and sealing mechanism 9. The bag clamping mechanism 11 includes a transmission rod 111, two pneumatic clamping jaws 112 arranged relatively on the transmission rod 111, and a bag clamping drive device. The bag clamping drive device is a rotating motor, and the movable end of the bag clamping drive device is connected to the transmission rod 111. Preferably, the movable end of the bag clamping drive device is connected to the transmission rod 111 through a synchronous belt transmission mechanism. The transmission rod 111 can be a ball screw with positive and negative threads. The two pneumatic clamping jaws 112 are both provided with a transmission seat 1101, and the two transmission seats 1101 are respectively threaded with the transmission rod 111, and the thread directions of the two transmission seats 1101 are opposite, so that the bag clamping drive device drives the two pneumatic clamping jaws 112 to open and close along the length direction of the transmission rod 111.

[0044] When the baler is in use, under the control of the controller 5, the tubular film conveying device 2 flattens the rolled tubular film bag and sends it to the film feeding mechanism 12 of the bag opening, sealing and cutting unit. The film feeding mechanism 12 conveys the tubular film bag through the guide roller driven by the motor. The bag opening, sealing and cutting unit sends the tubular film bag to the bag clamping mechanism 11 through the film feeding mechanism 12. The two pneumatic clamps 112 are driven to approach or move away from each other by the bag clamping drive device, so that the two pneumatic clamps 112 are adapted to tubular film bags of different widths, and the two pneumatic clamps 112 clamp the two sides of the tubular film bag to be opened.

[0045] When the first cutting and sealing mechanism 8 and the second cutting and sealing mechanism 9 are closed to each other, the tubular film bag is located between the opposite sides of the first cutting and sealing mechanism 8 and the second cutting and sealing mechanism 9, and the cutting device 13 cuts the tubular film bag, and the cut of the tubular film bag is the bag opening. The upper heat sealing heads 141 of the two heat sealing units 14 heat seal the bottom bag opening of the next tubular film bag, or the lower heat sealing heads 142 of the two heat sealing units 14 heat seal the top bag opening of the tubular film bag after loading; the film absorbing member 152 of the drawstring unit is an adsorption head, It is used to respectively absorb the edge part of the bag opening of the tubular film bag, so that the edge part of the bag opening of the tubular film bag enters the space between the abutment platform 151 and the clamping part 153. The first lifting drive device 154 drives the clamping part 153 to descend so that the abutment platform 151 and the clamping part 153 cooperate to clamp the edge part of the bag opening of the tubular film bag. The reciprocating movement of the two pneumatic clamps 112 approaching or moving away from each other can help expand the bag opening of the tubular film bag, thereby assisting the bag opening operation of the tubular film bag.

[0046] When the first cutting and sealing mechanism 8 and the second cutting and sealing mechanism 9 are separated from each other, the two drawstring units synchronously clamp the edge of the cut of the tubular film bag, and the bag clamping mechanism 11 clamps the two sides of the tubular film bag to assist in opening the bag. In this process, a one-to-two method is adopted, so that the first cutting and sealing mechanism 8 and the second cutting and sealing mechanism 9 synchronously open and close with the bag clamping mechanism 11 as the center, thereby improving the synchronization of the bag opening action of the tubular film bag, preventing the tubular film bag from falling off during the bag opening action, and having better working stability.

[0047] The lifting and dropping device 3 is located above the bag opening and sealing unit. The lifting and dropping device 3 includes a dropping hopper 31 and a second lifting drive device 32 for driving the dropping hopper 31 to perform lifting movements. The second lifting drive device 32 is arranged in the frame 1 and is composed of two symmetrically arranged telescopic cylinders.

[0048] Two hopper baffles 301 arranged opposite to each other and a material drop driving device 302 for driving the two hopper baffles 301 to open or close are hinged at the discharge port of the material drop hopper 31. Preferably, the material drop driving device 302 is arranged on the material drop hopper 31, and the material drop driving device 302 can be a telescopic cylinder, and the two hopper baffles 301 are both provided with a driving part 303, and the piston rod of the material drop driving device 302 is provided with a driving plate 304, and the driving plate 304 is penetrated with a driving groove 305, and the two driving parts 303 are both slidably connected in the driving groove 305. Under the cooperation of the driving groove 305 and the two driving parts 303, when the material drop driving device 302 extends, the driving plate 304 links the two hopper baffles 301 to close each other to close the material drop port of the material drop hopper 31; when the material drop driving device 302 retracts, the driving plate 304 links the two hopper baffles 301 to separate from each other to open the material drop port of the material drop hopper 31.

[0049] When the bag opening and sealing unit is working, the lifting drive device drives the drop hopper 31 to rise to avoid interfering with the action of the bag opening and sealing unit. When the bag opening operation of the tubular film bag is completed, the lifting drive device drives the drop hopper 31 to descend, so that the two hopper baffles 301 extend into the bag opening of the tubular film bag, open the drop opening of the drop hopper 31, and drop the material inside into the tubular film bag. The supporting device 4 is located below the bag opening and sealing unit, and includes a supporting frame 41, a lifting frame 42 arranged on the supporting frame 41, and a lifting frame 42 hinged to the lifting frame 42. The material tray 43 on the lowering frame 42, the flipping drive device 44 arranged on the lifting frame 42, and the adjusting member 45 for adjusting the height position of the lifting frame 42, the flipping drive device 44 can be a telescopic cylinder or a hydraulic cylinder, the shell of the flipping drive device 44 is hinged with the lifting frame 42, the movable end of the flipping drive device 44 is hinged at the bottom of the material tray 43, the flipping drive device 44 extends to drive the material tray 43 to flip upward to support and load the tubular film bag, and prevent the tubular film bag from escaping from the bag cutting and sealing unit during the loading process. After the tubular film bag is loaded, the material hopper 31 rises, the first cutting and sealing mechanism 8 and the second cutting and sealing mechanism 9 close together so that the lower heat sealing heads 142 of the two heat sealing units 14 heat seal the top bag opening of the tubular film bag after loading, and the flipping drive device 44 retreats to drive the material tray 43 to flip downward to assist in the unloading of the tubular film bag after loading, and the flipping drive device 33 is combined with the material tray 43 to form a telescopically driven flipping bucket, thereby realizing the dumping or loading of materials.

[0050] Preferably, the adjusting member 45 can be a ball screw with a hand wheel, the adjusting member 45 is rotatably connected to the supporting frame 41, and the lifting frame 42 is threadedly matched with the ball screw, and the height position of the lifting frame 42 can be adjusted by manually rotating the adjusting member 45 with the hand wheel. The top of the lifting frame 42 has a detachable connecting portion 401, the ball screw is threadedly matched with the connecting portion 401, and a shaking device 402 is connected between the connecting portion 401 and the lifting frame 42. The shaking device 402 can be a telescopic cylinder. The reciprocating telescopic activity of the shaking device 402 applies pressure to the top of the lifting frame 42, so that the supporting tray 43 drives the tube film bag loaded thereon to shake, so as to ensure that the material in the tube material bag is filled evenly, so that the tube film bag can package the material more compactly.

[0051] Of course, the above are only typical examples of the present invention. In addition, the present invention may have many other specific implementations. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. A tube film packaging machine, characterized in that: include: Rack (1); A bag opening, sealing and cutting unit, the bag opening, sealing and cutting unit comprising a mounting plate (6), a first translation driving device (7), a first cutting and sealing mechanism (8), a second cutting and sealing mechanism (9), at least one opening and closing transmission mechanism (10), a bag clamping mechanism (11), and a film feeding mechanism (12); the mounting plate (6) is horizontally arranged on the frame (1); the first cutting and sealing mechanism (8) and the second cutting and sealing mechanism (9) are arranged relatively to each other and move horizontally relative to the mounting plate (6); the second cutting and sealing mechanism (9) is provided with a cutting device (13) for cutting a tube film bag; the first cutting and sealing mechanism (8) and the second cutting and sealing mechanism (9) are provided with a heat sealing unit (14) for heat-sealing the cut of the tube film bag, and a bag pulling unit (15) for clamping the edge portion of the cut of the tube film bag on opposite sides; the bag clamping mechanism (11 ) is arranged on the mounting plate (6), and the bag clamping mechanism (11) is located below the first cutting and sealing mechanism (8) and the second cutting and sealing mechanism (9), and the bag clamping mechanism (11) is used to clamp the two sides of the tubular film bag to assist in bag opening; the film feeding mechanism (12) is arranged on the first cutting and sealing mechanism (8), and the film feeding mechanism (12) is used to transport the tubular film bag to the bag clamping mechanism (11); the first translation drive device (7) is arranged on the mounting plate (6), and the first translation drive device (7) is used to drive the first cutting and sealing mechanism (8) to slide back and forth horizontally, and the opening and closing transmission mechanism (10) is used to link the first cutting and sealing mechanism (8) and the second cutting and sealing mechanism (9) on opposite sides to synchronously open and close with the bag clamping mechanism (11) as the center.

2. A tubular film packaging machine according to claim 1, characterized in that: Two opening and closing transmission mechanisms (10) are provided, the two opening and closing transmission mechanisms (10) are symmetrically arranged on the mounting plate (6), and the first translation drive device (7) is located between the two opening and closing transmission mechanisms (10).

3. A tubular film packaging machine according to claim 2, characterized in that: The opening and closing transmission mechanism (10) comprises a first driving rod (101), a second driving rod (102), and a transmission gear (103); the first driving rod (101) and the second driving rod (102) are arranged in parallel and spaced apart; the first driving rod (101) is arranged on the first cutting and sealing mechanism (8); the second driving rod (102) is arranged on the second cutting and sealing mechanism (9); the transmission gear (103) is rotatably connected to the mounting plate (6); the transmission gear (103) is located between the adjacent first driving rod (101) and the second driving rod (102); and driving sections (1001) are arranged on opposite sides of the first driving rod (101) and the second driving rod (102); the driving section (1001) is meshed with the transmission gear (103).

4. A tubular film packaging machine according to claim 3, characterized in that: A connecting plate (16) is provided between the two second driving rods (102), the connecting plate (16) being provided with a first guide sleeve (17) for sliding connection with the first driving rod (101), and the movable end of the first translation driving device (7) is fixedly connected to the connecting plate (16).

5. The tube film packaging machine according to claim 3, characterized in that: The mounting plate (6) is provided with a second guide sleeve (18) for sliding connection with the second driving rod (102).

6. The tube film packaging machine according to claim 1, characterized in that: The bag clamping mechanism (11) comprises a transmission rod (111), two pneumatic clamping jaws (112) arranged opposite to each other on the transmission rod (111), and a bag clamping driving device for driving the two pneumatic clamping jaws (112) to open and close along the length direction of the transmission rod (111).

7. The tube film packaging machine according to claim 1, characterized in that: The heat sealing unit (14) comprises an upper heat sealing head (141) and a lower heat sealing head (142), and the bag pulling unit (15) is located between the upper heat sealing head (141) and the lower heat sealing head (142).

8. The tube film packaging machine according to claim 7, characterized in that: The bag pulling unit (15) comprises an abutment platform (151), two film absorbing members (152) symmetrically arranged on the abutment platform (151), a clamping portion (153) arranged between the two film absorbing members (152), and a first lifting drive device (154) for driving the clamping portion (153) to perform lifting movement, wherein the clamping portion (153) is located above the abutment platform (151), and the abutment platform (151) cooperates with the clamping portion (153) to clamp the bag mouth of the tubular film bag.

9. The tube film packaging machine according to claim 8, characterized in that: The cutting device (13) comprises a blade (131) and a telescopic driving device (132) for driving the blade (131) to move in translation; the blade (131) is located between the upper heat sealing head (141) and the lower heat sealing head (142) on the second cutting and sealing mechanism (9); the space between the upper heat sealing head (141) and the lower heat sealing head (142) of the first cutting and sealing mechanism (8) cooperates with the blade (131), and the bottom surface of the blade (131) is in contact with the top surface of the clamping portion (153).

10. The tube film packaging machine according to claim 1, characterized in that: It also includes a tube film conveying device (2), a lifting and dropping device (3), a supporting device (4), and a controller (5) placed on the frame (1); The tubular film conveying device (2) is used to convey the tubular film bag to the film conveying mechanism (12); The lifting and dropping device (3) is located above the bag opening and sealing unit, and comprises a dropping hopper (31) and a second lifting drive device (32) for driving the dropping hopper (31) to move up and down, and two hopper baffles (301) arranged opposite to each other are hinged at the discharge port of the dropping hopper (31), and a dropping drive device (302) for driving the two hopper baffles (301) to open or close; The supporting device (4) is located below the bag opening and sealing unit, and comprises a supporting frame (41), a lifting frame (42) arranged on the supporting frame (41), a supporting tray (43) hinged on the lifting frame (42), a turning drive device (44) arranged on the lifting frame (42), and an adjusting member (45) for adjusting the height position of the lifting frame (42), wherein the movable end of the turning drive device (44) is hinged to the bottom of the supporting tray (43); The tube film conveying device (2), the bag opening, sealing and cutting unit, the lifting and dropping device (3), and the supporting device (4) are all connected to the controller (5) and controlled by it.

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