Ton bag packaging machine

Abstract

The invention discloses a ton bag packaging machine, comprising a frame, a weighing mechanism and a feeding pipe. The frame comprises a lifting support leg and a fixed frame mounted on the lifting support leg. The weighing mechanism is arranged on the fixed frame. The upper end of the feeding pipe is connected with a dust removal mechanism. The bottom end of the feeding pipe is provided with a bag clamping mechanism. Four support rods are evenly arranged around the outer wall of the bottom end of the feeding pipe. The length direction of the support rods is perpendicular to the length direction of the feeding pipe. A plurality of hooks are arranged on the support rods. The ton bag is hung on a suitable hook, the height of the lifting support leg is adjusted, the bag mouth of the ton bag is sleeved on the feeding pipe, the bag mouth of the ton bag is clamped on the outer wall of the feeding pipe by the bag clamping mechanism, the material enters from the top end of the feeding pipe, and finally falls into the ton bag from the bottom end of the feeding pipe to complete the packaging. The invention can adapt to ton bags of different specifications by cooperating with the lifting support leg. The dust removal mechanism is used to avoid the deposition of the material on the inner wall of the feeding pipe.

Description

Technical Field

[0001] The present invention relates to the technical field of packaging machines, in particular to a ton bag packaging machine. Background Art

[0002] The ton bag packaging machine is a device that packs materials into bags. Depending on the properties of the materials, the feeding method of the ton bag packaging machine is also different. For materials with good fluidity, gravity feeding is used, and the weight of the materials automatically flows into the ton bag; for powder materials, spiral feeding is generally used to ensure that the materials enter the packaging bag evenly; for mixed materials, belt feeding is generally used.

[0003] Depending on the specific gravity and other characteristics of the material, the weight of each package of the ton bag packaging machine is different. The packaging weight is generally between 500KG and 2000KG. The existing ton bag packaging machines are difficult to adapt to packaging ton bags of different sizes. In addition, for gravity-fed ton bag packaging machines, the material always flies in the feed pipe during the natural fall process, and it is easy to remain and deposit in the feed pipe, which not only causes material waste, but also easily floats into the air after packaging, causing pollution to the production environment. Summary of the invention

[0004] In view of the defects of the above-mentioned prior art, the object of the present invention is to provide a ton bag packaging machine that can adapt to different types of packaging ton bags and prevent the deposition of materials on the wall of the feed pipe.

[0005] The technical solution adopted by the present invention to solve its technical problem is:

[0006] A ton bag packaging machine, comprising:

[0007] A frame, the frame comprising lifting support legs and a fixing frame mounted on the lifting support legs;

[0008] A weighing mechanism, wherein the weighing mechanism is arranged on the fixing frame;

[0009] A feeding pipe, wherein the upper end of the feeding pipe is connected with a dust removal mechanism, the bottom end of the feeding pipe is provided with a bag clamping mechanism, four support rods are evenly arranged around the outer wall of the bottom end of the feeding pipe, the length direction of the support rods is perpendicular to the length direction of the feeding pipe, a plurality of hooks are provided on the support rods, and the weighing mechanism connects the four support rods.

[0010] Preferably, the dust removal mechanism includes a fan, a dust removal body, a ventilation pipe 1 and a ventilation pipe 2; a partition is provided in the dust removal body, a plurality of filter cartridges are fixed on the partition, the partition divides the inner cavity of the dust removal body into an upper cavity and a lower cavity, the lower cavity is connected with a dust removal air intake port, and the dust removal air intake port is connected to the feed pipe; a reversing valve 1 is provided on the ventilation pipe 1, and the reversing valve 1 is respectively connected to the upper cavity, the fan and the outside atmosphere; a reversing valve 2 is provided at one end of the ventilation pipe 2, and the other end passes through the lower cavity and extends from one side of the lower cavity to form an inflation bag outlet, the inflation bag outlet is connected to the feed pipe, and the reversing valve 2 is respectively connected to the fan, the outside atmosphere and the inflation bag outlet.

[0011] Preferably, the fan is provided with an exhaust port and an air inlet, the exhaust port is connected to the second reversing valve, and the air inlet is connected to the first reversing valve.

[0012] Preferably, a back-blowing device is included, one end of which is connected to the upper cavity, and the other end of which is connected to a pressurized air source.

[0013] Preferably, the weighing mechanism comprises a cylinder 1, a movable frame and a weighing sensor, a plurality of the cylinders 1 are fixed on the movable frame, the bottom end of the movable frame is connected to the weighing sensor, and the bottom end of the weighing sensor is arranged on the fixed frame.

[0014] Preferably, the bag clamping mechanism comprises an airbag and a accommodating seat, wherein the accommodating seat wraps the airbag, the accommodating seat is sleeved on the bottom end of the feeding tube, and a gap is provided between the accommodating seat and the outer wall of the feeding tube.

[0015] Preferably, a mounting frame is further provided at the bottom end of the feed pipe, and the mounting frame is arranged above the accommodating seat. The four support rods are all fixed on the mounting frame, and a second cylinder is provided on the mounting frame. The second cylinder is connected to the accommodating seat and drives the accommodating seat to move up and down.

[0016] Preferably, the airbag is provided with raised anti-skid grooves at the position in contact with the feed tube wall, and the feed tube is provided with concave anti-skid grooves at the position in contact with the airbag, and the anti-skid grooves on the airbag and the anti-skid grooves on the feed tube cooperate with each other.

[0017] Preferably, the feed pipe includes an inlet section, a telescopic section connected to the inlet section, and a clamping section connected to the telescopic section. Two inclined baffles are provided in the inlet section, one end of the baffle is movably connected to the inlet section through a rotating shaft, and a buffer spring is connected between the bottom surface of the other end of the baffle and the inner wall of the inlet section.

[0018] Preferably, the number of the lifting support legs is four, which are respectively arranged at four corner positions of the fixing frame, and further comprises three fixing rods, wherein the fixing rods connect two adjacent lifting support legs.

[0019] The beneficial effects of the present invention are:

[0020] In the present invention, the ton bag is hung on a suitable hook, the height of the lifting support legs is adjusted, the bag mouth of the ton bag is put on the feed pipe, and then the bag mouth of the ton bag is clamped on the outer wall of the feed pipe by using a bag clamping mechanism. The material enters from the top of the feed pipe and finally falls into the ton bag from the bottom of the feed pipe to complete the packaging. The present invention can adapt to ton bags of different specifications by cooperating with the lifting support legs; the dust removal mechanism is used to avoid the deposition of materials on the wall of the feed pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is one of the structural schematic diagrams of the present invention;

[0022] Figure 2 This is the second structural schematic diagram of the present invention;

[0023] Figure 3 It is a structural schematic diagram of the rack in the present invention;

[0024] Figure 4 It is one of the partial structural schematic diagrams of the present invention;

[0025] Figure 5 This is the second partial structural schematic diagram of the present invention;

[0026] Figure 6 This is the third schematic diagram of the partial structure of the present invention;

[0027] Figure 7 is a cross-sectional view of the inlet section of the present invention;

[0028] Figure 8 It is one of the structural schematic diagrams of the dust removal mechanism in the present invention;

[0029] Fig. 9 This is the second structural schematic diagram of the dust removal mechanism in the present invention;

[0030] Fig.10 It is a cross-sectional view of the dust removal mechanism in the present invention.

[0031] In the figure:

[0032] 100, frame; 110, lifting support leg; 111, upper support leg; 112, lower support leg; 113, through hole; 120, fixing frame; 130, fixing rod;

[0033] 200, weighing mechanism; 210, cylinder 1; 220, movable frame; 230, weighing sensor; 240, display screen; 250, support rod; 260, hook;

[0034] 300, feed pipe; 310, inlet section; 320, telescopic section; 330, clamping section; 340, baffle; 350, rotating shaft; 360, buffer spring; 370, air inlet 1; 380, air inlet 2;

[0035] 400, bag clamping mechanism; 410, air bag; 420, receiving seat; 430, mounting frame; 440, cylinder 2;

[0036] 500, dust removal mechanism; 510, fan; 511, exhaust port; 512, air inlet; 520, dust removal body; 521, partition; 522, filter cartridge; 523, upper cavity; 524, lower cavity; 525, dust removal air intake port; 530, vent pipe one; 531, reversing valve one; 540, vent pipe two; 541, reversing valve two; 542, bag inflation outlet; 550, back-blowing device; 560, vent pipe three; 561, sealing valve; 600, integrated air control box; 610, manual valve. DETAILED DESCRIPTION

[0037] In order to make the technical problems, technical solutions and beneficial effects solved by the invention more clearly understood, the invention is further described below in conjunction with the accompanying drawings and embodiments.

[0038] Unless otherwise defined, the technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0039] Example 1

[0040] like Figures 1 to 7As shown, the present embodiment provides a ton bag packaging machine, including a frame 100, a weighing mechanism 200 and a feed pipe 300, wherein the frame 100 is used to support the entire ton bag packaging machine, including a lifting support leg 110 and a fixed frame 120 mounted on the lifting support leg 110, the lifting support leg 110 has a lifting function and is used to adjust the height of the entire ton bag packaging machine; a weighing mechanism 200 is arranged on the fixed frame 120, which is used to weigh the weight of the feed pipe 300 feed, so as to facilitate the measurement of ton loads; a dust removal mechanism 500 is connected to the upper end of the feed pipe 300, a bag clamping mechanism 400 is provided at the bottom end of the feed pipe 300 for clamping the ton bag, four support rods 250 are evenly arranged around the outer wall of the bottom end of the feed pipe 300, the length direction of the support rod 250 is perpendicular to the length direction of the feed pipe 300, the weighing mechanism 200 connects the four support rods 250, and a plurality of hooks 260 are arranged on the support rod 250, and the hooks 260 are arranged evenly on the support rod 250, and there are three or four rows of hooks 260 on the support rod 250 for hanging ton bags of different sizes. The hooks 260 are used in conjunction with the lifting support leg 110 to adapt to ton bags of different specifications.

[0041] refer to Figure 3 There are four lifting support legs 110, which are respectively arranged at four corners of the fixing frame 120. This embodiment also includes three fixing rods 130, which are used to connect two adjacent lifting support legs 110, preferably by welding. Since there are only three fixing rods 130, there is no fixing rod 130 between one group of adjacent lifting support legs 110. Such a setting can not only enhance the stability of the lifting support legs 110, but also the reserved side is convenient for operators and forklifts to enter and exit.

[0042] The lifting support leg 110 can be lifted automatically or manually. For example, the lifting support leg 110 includes an upper support leg 111 and a lower support leg 112. The upper support leg 111 and the lower support leg 112 are provided with a plurality of through holes 113 at different heights. The upper support leg 111 is inserted into the lower support leg 112, and bolts are passed through the through holes 113 at different heights to fix the upper support leg 111 and the lower support leg 112 together, thereby realizing height adjustment of the lifting support leg 110.

[0043] refer to Figure 4 and Figure 5The weighing mechanism 200 includes a cylinder 210, a movable frame 220 and a weighing sensor 230. A plurality of cylinders 210 are fixed on the movable frame 220. The bottom end of the movable frame 220 is connected to the weighing sensor 230. The bottom end of the weighing sensor 230 is arranged on the fixed frame 120. Specifically, there are four cylinders 210, four weighing sensors 230, the movable frame 220 is a quadrilateral, the four weighing sensors 230 are respectively located at the four corners of the movable frame 220, and the four cylinders 210 are respectively connected to the top of four support rods 250. The weighing mechanism 200 also includes a display screen 240 for displaying the weight of the material, which is convenient for the operator to observe. The weighing mechanism 200 is connected to the control system to control the packaging and discharging of ton bags of different specifications. This embodiment includes an integrated air control box 600, on which a manual valve 610 for adjusting the cylinder is provided. The manual valve 610 is easy to operate and can be rotated and stopped at any position.

[0044] refer to Figure 6 The bag clamping mechanism 400 includes an airbag 410 and a receiving seat 420. The receiving seat 420 wraps the airbag 410. The receiving seat 420 is sleeved on the bottom end of the feed pipe 300. A gap is provided between the receiving seat 420 and the outer wall of the feed pipe 300. The receiving seat 420 and the feed pipe 300 do not contact each other. The airbag 410 is connected to a ventilator. The bag mouth of the ton bag is sleeved between the outer wall of the feed pipe 300 and the receiving seat 420. The airbag 410 expands during ventilation and expands and extends along the radial position of the receiving seat 420 until it is close to the outer wall of the feed pipe 300 and clamps the bag mouth of the ton bag.

[0045] In order to increase the friction between the airbag 410 and the feed pipe 300 and prevent the mouth of the ton bag from slipping, the airbag 410 is provided with raised anti-slip grooves at the position in contact with the wall of the feed pipe 300, and the feed pipe 300 is provided with concave anti-slip grooves at the position in contact with the airbag 410. When the airbag 410 squeezes the feed pipe 300, the anti-slip grooves on the airbag 410 and the anti-slip grooves on the feed pipe 300 correspond to each other and cooperate with each other.

[0046] A mounting frame 430 is also provided at the bottom end of the feed pipe 300. The mounting frame 430 is arranged above the accommodating seat 420. Four support rods 250 are fixed on the mounting frame 430. A cylinder 2 440 is provided on the mounting frame 430. The cylinder 2 440 is connected to the accommodating seat 420. The cylinder 2 440 is used to drive the accommodating seat 420 to move up and down. When the accommodating seat 420 rises, a larger space is provided for the mouth of the ton bag to be sleeved on the mouth of the feed pipe 300. After the ton bag is sleeved, the accommodating seat 420 is lowered to a suitable position to facilitate the expansion of the airbag 410 and to fit closely to the wall of the feed pipe 300, so that the mouth of the ton bag is perfectly clamped between the wall of the feed pipe 300 and the airbag 410.

[0047] refer to Figure 6 and Figure 7The feed pipe 300 includes an inlet section 310, a telescopic section 320 connected to the inlet section 310, and a clamping section 330 connected to the telescopic section 320. The material enters from the inlet section 310, is buffered by the telescopic section 320, and finally falls into the ton bag from the bottom opening of the clamping section 330. The anti-slip pattern on the feed pipe 300 is set on the clamping section 330. A conical feed bin is provided above the feed section. Two obliquely arranged baffles 340 are provided in the inlet section 310. One end of the baffle 340 is movably connected to the inlet section 310 through a rotating shaft 350. A buffer spring 360 is connected between the bottom surface of the other end of the baffle 340 and the inner wall of the inlet section 310. The two baffles 340 are both semicircular and can be set on the same horizontal plane or at different heights of the inlet section 310, preferably at different heights and different orientations. A vibrator is provided on the feed pipe 300, and the material is poured into the inlet section 310 from the feed bin, and is buffered by the upper and lower baffles 340, and finally falls into the ton bag. The material falls into the ton bag under the buffering effect of the baffles 340, and the material will not fly around in the feed pipe 300, which can prevent the material from remaining in the feed pipe 300 and reduce the deposition of the material on the wall of the feed pipe 300.

[0048] Working principle: hang the ton bag on a suitable hook 260, adjust the height of the lifting support leg 110, raise the receiving seat 420, put the bag mouth of the ton bag on the feed pipe 300, and then lower the receiving seat 420 to a suitable position, inflate the airbag 410, and the airbag 410 is close to the outer wall of the feed pipe 300. The bag mouth of the ton bag is clamped between the outer wall of the feed pipe 300 and the airbag 410. The material enters from the top of the feed pipe 300 and finally falls into the ton bag from the bottom of the feed pipe 300.

[0049] Example 2

[0050] like Figures 1 to 10 As shown, on the basis of Example 1, the ton bag packaging machine is connected to a dust removal mechanism 500, and the feed pipe 300 is provided with an air inlet 1 370 and an air inlet 2 380.

[0051] like Figures 8 to 10 As shown, the dust removal mechanism 500 includes a fan 510, a dust removal body 520, a vent pipe 1 530 and a vent pipe 2 540. A partition 521 is provided inside the dust removal body 520, and a plurality of filter cartridges 522 are fixed on the partition 521. The partition 521 divides the inner cavity of the dust removal body 520 into an upper cavity 523 and a lower cavity 524. The lower cavity 524 is connected with a dust removal air intake 525, and the dust removal air intake 525 is connected to the air inlet 1 370 on the feed pipe 300 through a pipeline.

[0052] A reversing valve 531 is provided on the ventilation pipe 530, and the reversing valve 531 is connected to the upper cavity 523, the fan 510 and the outside atmosphere respectively. That is to say, the reversing valve 531 has three interfaces, the first interface is connected to the outside atmosphere, the second interface is connected to the fan 510, and the third interface is connected to the upper cavity 523. The reversing valve 531 is used to switch the mutual connection between the upper cavity 523, the fan 510 and the outside atmosphere.

[0053] A reversing valve 541 is provided at one end of the ventilation pipe 540, and the other end passes through the lower cavity 524 and extends from one side of the lower cavity 524 to form a bag inflation outlet 542. The bag inflation outlet 542 is connected to the air inlet 380 on the feed pipe 300 through a pipeline. The reversing valve 541 is respectively connected to the fan 510, the outside atmosphere and the bag inflation outlet 542. That is to say, the reversing valve 541 also has three interfaces, the first interface is connected to the outside atmosphere, the second interface is connected to the fan 510, and the third interface is connected to the bag inflation outlet 542. The reversing valve 541 is used to switch the mutual connection between the fan 510, the outside atmosphere and the bag inflation outlet 542.

[0054] The fan 510 is provided with an exhaust port 511 and an air inlet 512, the exhaust port 511 is connected to the second reversing valve 541, and the air inlet 512 is connected to the first reversing valve 531. The first reversing valve 531 and the second reversing valve 541 are arranged on the same side of the dust removal body 520, so as to facilitate the simultaneous pipe connection of the fan 510, and the dust removal air intake port 525 and the bag inflation air outlet 542 are arranged on the same side of the dust removal body 520.

[0055] This embodiment also includes a backflush device 550 and a ventilation pipe 3 560. One end of the backflush device 550 is connected to the upper cavity 523, and the other end is connected to the pressurized gas source. One end of the ventilation pipe 3 560 is connected to the upper cavity 523, and the other end is connected to the outside atmosphere. A sealing valve 561 is provided on the ventilation pipe 3.

[0056] The dust removal mechanism 500 includes an automatic bag inflation function, a negative pressure dust removal function, an automatic back-blowing filter element cleaning function, and a normal pressure natural exhaust dust removal function.

[0057] Principle of automatic bag inflation: switch the reversing valve 531 so that the air inlet 512 of the fan 510 is connected to the outside atmosphere, switch the reversing valve 541 so that the exhaust port 511 of the fan 510 is connected to the bag inflation outlet 542, close the sealing valve 561, start the fan 510, and the pressurized gas discharged from the exhaust port 511 of the fan 510 flows to the bag inflation outlet 542 through the ventilation pipe 540. The bag inflation outlet 542 is connected to the air inlet 380 on the feed pipe 300, and the pressurized gas enters the ton bag from the air inlet 380, causing the ton bag to swell, which is conducive to the falling of materials.

[0058] Principle of negative pressure dust removal: switch the reversing valve 1 531 so that the air inlet 512 of the fan 510 is connected to the upper cavity 523, switch the reversing valve 2 541 so that the exhaust port 511 of the fan 510 is connected to the outside atmosphere, close the sealing valve 561, start the fan 510, and under the suction of the fan 510, the dust gas in the ton bag and the feed pipe 300 is sucked into the lower cavity 524 at the dust removal suction port 525, and after being filtered by the filter cartridge 522, it is discharged into the air inlet 512 of the fan 510 from the opening of the filter cartridge 522 of the upper cavity 523, and finally discharged to the outside atmosphere from the exhaust port 511.

[0059] Principle of automatic back-blowing cleaning: the fan 510 stops running, the reversing valve 1 531 is switched to connect the air inlet 512 of the fan 510 to the outside atmosphere, and the reversing valve 2 541 is switched to connect the exhaust port 511 of the fan 510 to the outside atmosphere. At this time, the upper cavity 523 and the lower cavity 524 form a closed environment, the sealing valve 561 is closed, and the back-blowing device 550 is started. The high-pressure gas sprayed by the back-blowing device 550 is blown toward the filter cartridge 522 to clean the filter cartridge 522. The dust blown off the filter cartridge 522 falls into the bottom of the lower cavity 524 and is finally discharged from the powder discharge port at the bottom of the lower cavity 524.

[0060] Principle of natural exhaust dust removal at normal pressure: stop the fan 510, switch the reversing valve 1 531, so that the air inlet 512 of the fan 510 is connected to the outside atmosphere, switch the reversing valve 2 541, so that the exhaust port 511 of the fan 510 is connected to the outside atmosphere. At this time, the upper cavity 523 and the lower cavity 524 form a closed environment, open the sealing valve 561, and the dust gas in the ton bag and the feed pipe 300 passes through the lower cavity 524 through its own pressure, and is discharged into the atmosphere after being filtered by the filter cartridge 522.

[0061] The dust removal mechanism 500 is provided with a reversing valve 1 531 and a reversing valve 2 541, and the fan 510 is controlled by the reversing valve. The embodiment is connected to the outside atmosphere or the dust removal body 520. When the reversing valve 1 531 is switched to the air inlet 512 of the fan 510 to connect to the outside atmosphere and the reversing valve 2 541 is switched to the exhaust port 511 of the fan 510 to connect to the bag inflation outlet 542, the embodiment realizes the automatic bag inflation function; when the reversing valve 1 531 is switched to the air inlet 512 of the fan 510 to connect to the upper cavity 523 and the reversing valve 2 541 is switched to the exhaust port 511 of the fan 510 to connect to the outside atmosphere, the embodiment realizes the negative pressure dust removal function; when the reversing valve 1 531 is switched to the air inlet 512 of the fan 510 to connect to the outside atmosphere and the reversing valve 2 541 is switched to the exhaust port 511 of the fan 510 to connect to the outside atmosphere, the sealing valve 561 is opened, the embodiment realizes the normal pressure natural exhaust dust removal function, the sealing valve 561 is closed, and the back-blowing device 550 is started, and the embodiment realizes the automatic back-blowing cleaning. Thus, the dust removal mechanism 500 realizes a multifunctional dust removal method.

[0062] The ventilation pipe 2 540 passes through the lower cavity 524 and extends from one side of the lower cavity 524. The dust removal mechanism 500 sets most of the ventilation pipe 2 540 in the lower cavity 524, and other pipes are directly connected to the upper cavity 523 or the lower cavity 524, which effectively compresses the volume of the dust removal mechanism 500 and occupies a smaller area.

[0063] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should fall within the protection scope of the present invention.

Claims

1. A ton bag packaging machine, characterized in that: include: A frame (100), the frame (100) comprising a lifting support leg (110) and a fixing frame (120) mounted on the lifting support leg (110); A weighing mechanism (200), wherein the weighing mechanism (200) is arranged on the fixing frame (120); A feeding pipe (300), the upper end of the feeding pipe (300) is connected to a dust removal mechanism (500), the bottom end of the feeding pipe (300) is provided with a bag clamping mechanism (400), four support rods (250) are evenly arranged around the outer wall of the bottom end of the feeding pipe (300), the length direction of the support rod (250) is perpendicular to the length direction of the feeding pipe (300), a plurality of hooks (260) are arranged on the support rod (250), and the weighing mechanism (200) is connected to the four support rods (250); The dust removal mechanism (500) comprises a fan (510), a dust removal body (520), a ventilation pipe 1 (530) and a ventilation pipe 2 (540); a partition (521) is provided inside the dust removal body (520), a plurality of filter cartridges (522) are fixed on the partition (521), the partition (521) divides the inner cavity of the dust removal body (520) into an upper cavity (523) and a lower cavity (524), the lower cavity (524) is connected with a dust removal air intake port (525), and the dust removal air intake port (525) is connected to the feed pipe (300); a reversing valve 1 (531) is provided on the ventilation pipe 1 (530), and the reversing valve 1 (531) is respectively connected to the upper cavity (523), the fan (510) and the outside atmosphere; the ventilation pipe 1 (530) is provided with a reversing valve 1 (531), and the reversing valve 1 (531) is respectively connected to the upper cavity (523), the fan (510) and the outside atmosphere; One end of the second air pipe (540) is provided with a second reversing valve (541), and the other end passes through the lower cavity (524) and extends from one side of the lower cavity (524) to form a bag inflation outlet (542), the bag inflation outlet (542) is connected to the feed pipe (300), and the second reversing valve (541) is respectively connected to the fan (510), the outside atmosphere and the bag inflation outlet (542); the fan (510) is provided with an exhaust port (511) and an air inlet (512), the exhaust port (511) is connected to the second reversing valve (541), and the air inlet (512) is connected to the first reversing valve (531); and a back-blowing device (550) is also included, one end of the back-blowing device (550) is connected to the upper cavity (523), and the other end is connected to a pressurized air source.

2. A ton bag packaging machine according to claim 1, characterized in that: The weighing mechanism (200) comprises a cylinder one (210), a movable frame (220) and a weighing sensor (230); a plurality of the cylinders one (210) are fixed on the movable frame (220); the bottom end of the movable frame (220) is connected to the weighing sensor (230); and the bottom end of the weighing sensor (230) is arranged on the fixed frame (120).

3. The ton bag packaging machine according to claim 1, characterized in that: The bag clamping mechanism (400) comprises an air bag (410) and a receiving seat (420), wherein the receiving seat (420) wraps the air bag (410), the receiving seat (420) is sleeved on the bottom end of the feeding tube (300), and a gap is provided between the receiving seat (420) and the outer wall of the feeding tube (300).

4. A ton bag packaging machine according to claim 3, characterized in that: A mounting frame (430) is also provided at the bottom end of the feed pipe (300), and the mounting frame (430) is arranged above the accommodating seat (420). The four support rods (250) are all fixed on the mounting frame (430), and a second cylinder (440) is provided on the mounting frame (430). The second cylinder (440) is connected to the accommodating seat (420) and drives the accommodating seat (420) to move up and down.

5. The ton bag packaging machine according to claim 3, characterized in that: The airbag (410) is provided with a raised anti-skid pattern at a position where it contacts the wall of the feeding tube (300), and the feeding tube (300) is provided with a concave anti-skid pattern at a position where it contacts the airbag (410), and the anti-skid pattern on the airbag (410) and the anti-skid pattern on the feeding tube (300) cooperate with each other.

6. The ton bag packaging machine according to claim 1, characterized in that: The feed pipe (300) comprises an inlet section (310), a telescopic section (320) connected to the inlet section (310), and a clamping section (330) connected to the telescopic section (320); two obliquely arranged baffles (340) are provided in the inlet section (310); one end of the baffle (340) is movably connected to the inlet section (310) via a rotating shaft (350); a buffer spring (360) is connected between the bottom surface of the other end of the baffle (340) and the inner wall of the inlet section (310).

7. The ton bag packaging machine according to claim 1, characterized in that: There are four lifting support legs (110), which are respectively arranged at four corner positions of the fixing frame (120), and also include three fixing rods (130), wherein the fixing rods (130) connect two adjacent lifting support legs (110).

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