A ton bag automatic opening and loading system

Abstract

The present invention relates to an automatic ton bag opening and loading system, comprising a frame, a suction device and a cutting knife device installed on the top of the frame, and a plurality of first slide modules installed in the middle of the frame, wherein the output end of each first slide module is connected to a hook; when the ton bag is opened by the automatic ton bag opening and loading system, the plurality of slings of the ton bag are hung on the corresponding hooks respectively, and the first slide module drives the ton bag to perform an upward linear motion in the vertical direction through the corresponding hooks, thereby lifting the ton bag to the target position, and then the cutting knife device cuts the ton bag open; when the ton bag is opened, the material inside the ton bag is sucked by the suction device, thereby taking out all the material inside the ton bag. By arranging the suction device, the cutting knife device, the first slide module and the hook, the ton bag can be automatically opened and the material is taken out, and an automated production method is adopted, which is simple to operate, has high production efficiency, and can effectively ensure the accuracy of material taking.

Description

Technical Field

[0001] The present invention relates to the technical field of bag opening equipment, in particular to an automatic bag opening and feeding system for ton bags. Background Art

[0002] The bag opening equipment is used to open and remove materials from ton bags storing powder materials.

[0003] In the existing technology, ton bags are hung above the ton bag equipment by a crane, opened by manual bag cutting, and then the materials in the ton bags are taken out by manual bagging. This production method has the following disadvantages:

[0004] (1) During the unpacking process, the overhead crane needs to keep the bag hanging, and cannot transfer other bags, which is inefficient;

[0005] (2) During the bag opening process, manual bag cutting and bagging are used, which takes a long time and has low production efficiency;

[0006] (3) During the unpacking process, the residual materials are cleaned by manually assisting the bags and shaking the bags with overhead cranes. This operation is cumbersome and can easily cause blockage.

[0007] (4) During the unpacking process, manual work is required to determine whether the material has been taken out based on the amount of residual material, resulting in poor consistency in the material taken out. Summary of the Invention

[0008] In response to the shortcomings of the above-mentioned existing production technology, the applicant provides a rationally structured automatic opening and loading system for ton bags. By setting up a suction device, a cutting knife device, a first slide module and a hook, the system can automatically complete the operations of opening and taking out materials from ton bags. It adopts an automated production method, which is simple to operate, has high production efficiency, and can effectively ensure the accuracy of material taking.

[0009] The technical solutions adopted in the present invention are as follows:

[0010] A ton bag automatic opening and feeding system comprises a frame, a suction device is installed on the top of the frame, a cutting knife device is installed on the suction device, a plurality of first slide modules are installed in the middle of the frame, the output end of a single first slide module is connected to a hook, an electric control box is fixed on the frame, and a control system is installed in the electric control box; when the ton bag is opened by the ton bag automatic opening and feeding system, the ton bag is placed in the middle of the plurality of first slide modules, and the plurality of slings of the ton bag are hung on the corresponding hooks respectively, and the first slide module is connected to the corresponding The hook drives the ton bag to make an upward linear motion in the vertical direction, thereby lifting the ton bag to the target position; then the cutter device makes a linear motion in the vertical direction, thereby extending the cutter device relative to the suction device, and then the suction device drives the cutter device to make a linear motion in the vertical direction, thereby cutting the ton bag; when the ton bag is opened, the cutter device makes a linear motion in the vertical direction, thereby retracting the cutter device relative to the suction device, and then the suction device sucks the material inside the ton bag, thereby taking out all the material in the ton bag.

[0011] As a further improvement of the above technical solution:

[0012] The structure of the material suction device is as follows: it includes a second slide module fixed on the top of the frame, the output end of the second slide module is connected to the material suction pipe group for material suction, and the second slide module drives the material suction pipe group to perform linear movement of rising or falling in the vertical direction; the material suction pipe group includes a cylindrical and hollow material suction outer tube, the inner tube of the material suction outer tube is concentrically installed, and a material suction port is formed between the outer side wall of the bottom of the material suction inner tube and the inner side wall of the bottom of the material suction outer tube; the material suction inner tube is cylindrical and hollow The top and bottom of the inner suction tube are respectively equipped with heads, and several air supply ports are arranged along the circumference on the outer circumference of the inner suction tube. The air supply ports extend to the outside of the outer suction tube, and several through holes are arranged on the head at the bottom of the inner suction tube. When the suction device sucks materials, the outer suction tube is connected to a negative pressure air source, and the inner suction tube is connected to a positive pressure air source through the air supply ports. The negative pressure air source drives the outer suction tube to suck the material in the ton bag from the suction port to between the inner side wall of the outer suction tube and the outer side wall of the inner suction tube, thereby sucking out the material in the ton bag.

[0013] A vibrator is mounted on the outer circumferential surface of the outer suction pipe.

[0014] The output end of the second slide module is connected to the outer material suction pipe through a clamp.

[0015] A pressure detection port is provided on the outer circumferential surface of the inner suction tube, and a pressure sensor is installed in the pressure detection port.

[0016] The bottom of the outer suction pipe is equipped with a bag support bracket.

[0017] The structure of the cutting knife device is as follows: it includes a lifting cylinder fixed on the outer side wall of the outer suction tube, the output end of the lifting cylinder is connected to the bag opening knife through the tool holder, and the lifting cylinder drives the bag opening knife to move linearly in the vertical direction, so that the bag opening knife extends or retracts relative to the inner suction tube; the bag opening knife is installed on the outer side wall of the outer suction tube, and the bottom of the bag opening knife is provided with an inclined surface, so that the bag opening knife is in the shape of an oblique cut cylinder, and the protrusion at the bottom of the bag opening knife is provided with a blade for cutting ton bags.

[0018] A plurality of guide pillars are mounted on the top of the tool seat, a linear bearing is mounted on the outer circumference of a single guide pillar, and the single linear bearing is fixed on the outer circumference of the inner material suction tube.

[0019] The frame is equipped with symmetrically arranged extrusion devices, and the structure of a single extrusion device is as follows: it includes an extrusion cylinder fixed on the frame, the output end of the extrusion cylinder is connected to a beating head, and the extrusion cylinder drives the beating head to move linearly in the horizontal direction, thereby beating the ton bags in the automatic opening and loading system of ton bags.

[0020] A safety grating is installed on the feeding end of the frame.

[0021] The beneficial effects of the present invention are as follows:

[0022] The present invention has a compact and reasonable structure and is easy to operate. By arranging a suction device, a cutting knife device, a first slide module and a hook, it can automatically complete the operations of opening and taking out materials from ton bags. It adopts an automated production method, is simple to operate, and has high production efficiency.

[0023] The present invention also has the following advantages:

[0024] (1) In the present invention, the ton bag is hung by the first slide module and the hook, and the ton bag is transported to the work station by a forklift. Compared with the traditional bag opening equipment, the present invention does not require the use of a crane, saves working space, and improves work efficiency.

[0025] (2) In the present invention, the stroke of a single first slide module is controlled to shake the ton bag to cooperate with the suction device to suck the material, thereby improving the working efficiency of the suction device and enabling the suction device to suck as much material in the ton bag as possible.

[0026] (3) The equipment of the present invention has high adaptability, and one workstation can store multiple ton bags according to the size of the ton bags, effectively ensuring production continuity.

[0027] (4) In the present invention, by setting a torque sensor, the real-time weight of the ton bag can be converted according to (Formula 1). The automatic opening and loading system of the ton bag can adjust the action of the hook according to the real-time weight, so that the suction device can effectively absorb the residual material and ensure the quality of the suction.

[0028] (5) In the present invention, an air supply port and a pressure sensor are provided, and the air supply pressure entering the air supply port is reasonably adjusted according to the pressure measured in real time by the pressure sensor. When the suction device is blocked, air can be supplied in time, thereby improving the working stability of the automatic bag opening and loading system. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of the present invention.

[0030] Figure 2 for Figure 1 main view.

[0031] Figure 3 for Figure 1 side view.

[0032] Figure 4 It is a schematic diagram of the installation structure of the suction device and the cutting knife device in the present invention.

[0033] Figure 5 It is an exploded view of the suction device and the cutting knife device in the present invention.

[0034] Figure 6 It is a structural schematic diagram of the suction pipe group in the present invention.

[0035] Figure 7 for Figure 6 A partial enlarged view of point A in the middle.

[0036] Figure 8 It is a full cross-sectional view of the suction tube assembly in the present invention.

[0037] Figure 9 It is a front view of the package opening knife in the present invention.

[0038] Figure 10 This is a schematic diagram of the present invention in working state Figure 1 .

[0039] Figure 11 This is a schematic diagram of the present invention in working state Figure 2 .

[0040] Figure 12 This is a schematic diagram of the present invention in working state Figure 3 .

[0041] Figure 13 This is a schematic diagram of the present invention in working state Figure 4 .

[0042] Including: 1. Frame; 2. Suction device; 3. Cutting knife device; 4. First slide module; 5. Hook; 6. Extrusion device; 7. Electric control box; 8. Ton bag; 9. Safety grating;

[0043] 201, second slide module; 202, clamp; 203, inner suction tube; 204, air supply port; 205, pressure detection port; 206, pressure sensor; 207, vibrator; 208, bag support bracket; 209, suction port; 210, outer suction tube; 211, through hole;

[0044] 301, package opening knife; 302, blade; 303, lifting cylinder; 304, linear bearing; 305, guide column; 306, tool holder;

[0045] 601. Extrusion cylinder; 602. Patting head. DETAILED DESCRIPTION

[0046] The specific embodiments of the present invention will be described below with reference to the accompanying drawings.

[0047] The structure and function of the present invention are as follows:

[0048] like Figures 1-13 As shown, a ton bag automatic opening and feeding system includes a frame 1, a suction device 2 is installed on the top of the frame 1, a cutting device 3 is installed on the suction device 2, a plurality of first slide modules 4 are installed in the middle of the frame 1, the output end of a single first slide module 4 is connected to a hook 5, an electric control box 7 is fixed on the frame 1, and a control system is installed in the electric control box 7; when the ton bag 8 is opened by the ton bag automatic opening and feeding system, the ton bag 8 is placed in the middle of the plurality of first slide modules 4, and the plurality of slings of the ton bag 8 are hung on the corresponding hooks 5 respectively, and the first slide module 4 is connected to the corresponding hooks 5. The hook 5 drives the ton bag 8 to make an upward linear motion in the vertical direction, thereby lifting the ton bag 8 to the target position; then the cutter device 3 makes a linear motion in the vertical direction, thereby extending the cutter device 3 relative to the suction device 2, and then drives the cutter device 3 to make a linear motion in the vertical direction through the suction device 2, thereby causing the cutter device 3 to cut the ton bag 8 open; when the ton bag 8 is opened, the cutter device 3 makes a linear motion in the vertical direction, thereby retracting the cutter device 3 relative to the suction device 2, and then the suction device 2 sucks the material inside the ton bag 8, thereby taking out all the material in the ton bag 8. The automatic opening and loading system for ton bags includes a frame 1 serving as a supporting body, a suction device 2 for sucking materials from the ton bag 8, a cutting device 3 for cutting the ton bag 8, a first slide module 4 for driving the hook 5 to move linearly, a hook 5 for hooking the ton bag 8, an extrusion device 6 for patting the ton bag 8 to prevent the suction device 2 from being blocked, an electrical control box 7 for installing the control system, and a safety grating 9 for ensuring production safety. The safety grating 9 is installed at the feeding end of the frame 1.

[0049] Among them, there are four first slide modules 4, and a hook 5 is installed at the output end of each first slide module 4; the ton bag 8 is provided with four slings, which are hung on the four hooks 5 respectively. When the ton bag 8 is placed in the automatic opening and loading system of the ton bag, the slings of the ton bag 8 are manually hung on the hooks 5, and then the first slide module 4 drives the hooks 5 to rise, thereby lifting the ton bag 8; a torque sensor is installed on the output shaft of the first slide module 4, and the torque value measured by the torque sensor can be converted into the real-time weight of the ton bag 8, thereby completing the automatic detection of the residual material amount in the ton bag 8; when the safety grating 9 detects that a person has entered the working area of ​​the automatic opening and loading system of the ton bag, the automatic opening and loading system of the ton bag is automatically closed.

[0050] like Figure 4-Figure 8As shown, in one embodiment of the present application, the structure of the suction device 2 is as follows: it includes a second slide module 201 fixed on the top of the frame 1, the output end of the second slide module 201 is connected to the suction pipe group for suctioning, and the second slide module 201 drives the suction pipe group to perform a linear motion of rising or falling in the vertical direction; the suction pipe group includes a suction outer tube 210 that is cylindrical and hollow inside, and a suction inner tube 203 is concentrically installed inside the suction outer tube 210, and a suction port 209 is formed between the outer side wall of the bottom of the suction inner tube 203 and the inner side wall of the bottom of the suction outer tube 210; the suction inner tube 203 is cylindrical and hollow inside, and the suction The top and bottom of the inner tube 203 are fitted with sealing heads. Several air inlets 204 are circumferentially arranged on the outer circumference of the inner suction tube 203, extending outward from the outer suction tube 210. Several through-holes 211 are provided on the sealing head at the bottom of the inner suction tube 203. When the suction device 2 is sucking material, the outer suction tube 210 is connected to a negative pressure air source, while the inner suction tube 203 is connected to a positive pressure air source via the air inlets 204. The negative pressure air source drives the outer suction tube 210 to draw the material from the ton bag 8 through the suction port 209 into the space between the inner sidewall of the outer suction tube 210 and the outer sidewall of the inner suction tube 203, thereby sucking the material out of the ton bag 8. A vibrator 207 is fitted on the outer circumference of the outer suction tube 210. The output end of the second slide module 201 is connected to the outer suction tube 210 via a clamp 202. A pressure detection port 205 is provided on the outer circumference of the inner suction tube 203, and a pressure sensor 206 is installed in the pressure detection port 205. A bag support bracket 208 is installed at the bottom of the outer suction tube 210. The top of the inner suction tube 203 adopts a conical head, which can ensure that the inner suction tube 203 can transport smoothly without material accumulation. The bottom of the inner suction tube 203 adopts an elliptical head, and the through hole 211 is provided on the end face of the elliptical head, which can prevent the suction port 209 from being adsorbed and blocked by the ton bag 8; four air supply ports 204 are provided on the wall of the inner suction tube 203, which can be supplied with air through a positive pressure air source. The positive pressure air source blows air outward through the through hole 211, which can blow up the material in the ton bag 8, thereby assisting the material in the ton bag 8 to enter the suction port 209, and at the same time prevent the suction port 209 from being adsorbed and blocked by the bottom of the ton bag 8;

[0051] The outer suction tube 210 is provided with a pressure detection port 205 for installing a pressure sensor 206. The pressure sensor 206 can detect the pressure in the outer suction tube 210, thereby determining whether the suction device 2 is blocked. When the pressure value measured by the pressure sensor 206 is within the range of 10kPa-20kPa, it indicates that the suction device 2 is not blocked; when the pressure value measured by the pressure sensor 206 is greater than 20kPa, it indicates that the suction device 2 is blocked.

[0052] The bag support bracket 208 is made of round steel and is used to isolate the ton bag 8 from the suction port 209 to prevent the suction port 209 from being adsorbed with the bottom of the ton bag 8 and causing blockage. The bag support bracket 208 surrounds the elliptical head at the bottom of the suction inner tube 203.

[0053] like Figure 4 、 Figure 5 、 Figure 9 As shown, in one embodiment of the present application, the structure of the cutting knife device 3 is as follows: it includes a lifting cylinder 303 fixed on the outer wall of the outer suction tube 210, the output end of the lifting cylinder 303 is connected to the bag opening knife 301 through the tool holder 306, and the lifting cylinder 303 drives the bag opening knife 301 to move linearly in the vertical direction, so that the bag opening knife 301 extends or retracts relative to the inner suction tube 203; the bag opening knife 301 is installed on the outer wall of the outer suction tube 210, and the bottom of the bag opening knife 301 is provided with an inclined surface, so that the bag opening knife 301 is in the shape of an oblique cylinder, and the protrusion at the bottom of the bag opening knife 301 is provided with a blade 302 for cutting the ton bag 8; a plurality of guide columns 305 are installed on the top of the tool holder 306, and a linear bearing 304 is installed on the outer circumferential surface of a single guide column 305, and a single linear bearing 304 is fixed on the outer circumferential surface of the inner suction tube 203. As shown in FIG. Figure 9 As shown, the bottom end of the bag opening knife 301 has a blade 302, and the other end has no blade 302, which can ensure that after the bag opening knife 301 cuts the bag opening of the ton bag 8, the bag opening of the ton bag 8 is still connected to the main part of the ton bag 8, thereby preventing the bag opening of the ton bag 8 from falling into the ton bag 8 and preventing contamination of the materials in the ton bag 8.

[0054] like Figure 1-Figure 3 As shown, in one embodiment of the present application, a symmetrically arranged extrusion device 6 is installed on the frame 1, and the structure of a single extrusion device 6 is: it includes an extrusion cylinder 601 fixed on the frame 1, and the output end of the extrusion cylinder 601 is connected to the beating head 602. The extrusion cylinder 601 drives the beating head 602 to move linearly in the horizontal direction, thereby beating the ton bag 8 in the automatic opening and loading system of the ton bag.

[0055] The working process of the present invention is as follows:

[0056] A method for using a ton bag automatic opening and loading system comprises the following steps:

[0057] S1. Preparation, such as Figure 10 As shown, the ton bag 8 is placed on the material receiving seat of the ton bag automatic opening and loading system, and the operator hangs the slings of the ton bag 8 one by one on the hook 5 closest to its position. The machine can only be started after the safety grating 9 detects no abnormalities;

[0058] S1.1. The material receiving base can store multiple ton bags 8 at a time according to the height of the ton bags 8 and the height at which bags can be hung manually, thus ensuring continuous production.

[0059] S2. Open the package, such as Figure 11 As shown, the first slide module 4 is started, driving the hook 5 to perform an upward linear motion in the vertical direction, thereby lifting the ton bag 8, and then the lifting cylinder 303 is extended, driving the bag opening knife 301 to perform a downward linear motion in the vertical direction through the tool holder 306, so that the bag opening knife 301 is extended relative to the material suction inner tube 203, and then the second slide module 201 is started, driving the cutting knife device 3 to perform a downward linear motion in the vertical direction through the material suction inner tube 203, so that the bag opening knife 301 is lowered to the first working position, so that the bag opening knife 301 cuts the ton bag 8;

[0060] S3. Suction material, such as Figure 12 As shown, after the bag opening step is completed, the lifting cylinder 303 retracts, and drives the bag opening knife 301 to perform a linear downward motion in the vertical direction through the tool holder 306, so that the bag opening knife 301 retracts relative to the material suction inner tube 203, and the bag opening knife 301 returns to its original position. Then the second slide module 201 is started, driving the material suction inner tube 203 to perform a linear downward motion in the vertical direction, so that the material suction port 209 extends into the interior of the ton bag 8, and at the same time makes the bag support bracket 208 fit with the inner bottom wall of the ton bag 8, so that the material suction inner tube 203 descends to the second working position, and the material in the ton bag 8 is sucked out;

[0061] During the process of sucking materials at the suction port 209, the positive pressure air source supplies air to the suction inner tube 203 through the air supply port 204, and the extrusion cylinder 601 drives the beating head 602 to continuously beat the ton bag 8, ensuring that the materials in the ton bag 8 are gathered at the position of the middle suction inner tube 203; at the same time, the two adjacent first slide modules 4 installed on the same side of the frame 1 alternately drive the corresponding hooks 5 to perform linear movement in the vertical direction, thereby preventing the suction port 209 from being blocked by materials;

[0062] S4. Clear the residual material, install a torque sensor on the output shaft of the first slide module 4, the torque sensor collects the torque at the output shaft of the first slide module 4 in real time, and converts it into the real-time weight of the ton bag 8 by (Formula 1);

[0063] T=mgr (Formula 1)

[0064] In (Equation 1), T represents the torque at the output shaft of the first slide module 4 measured in real time by the torque sensor, in N*m;

[0065] m represents the weight of the ton bag 8, in kg;

[0066] r represents the radius of the output shaft extension end of the first slide module 4, in meters;

[0067] g represents the acceleration due to gravity, which is taken as 9.8;

[0068] When the weight of the ton bag 8 measured by the torque sensor is less than 10% of the initial weight, Figure 13 As shown, the second slide module 201 is started, driving the suction inner tube 203 to perform a linear downward motion in the vertical direction, so that the bag support bracket 208 pushes the ton bag 8 into a cone shape; at the same time, the vibrator 207 is turned on, and the first slide module 4 installed on the frame 1 drives the corresponding hooks 5 one by one to perform a linear upward motion in the vertical direction and then return to their original position, so that the materials in the corners and crevices of the ton bag 8 are gathered at the suction port 209, which can improve the suction speed of the suction device 2 and effectively reduce the residual materials in the ton bag 8.

[0069] The pressure sensor 206 monitors the pressure inside the suction pipe 203 in real time. Once the bottom of the ton bag 8 is adsorbed on the suction port 209 due to negative pressure and causes blockage, the positive pressure input at the air supply port 204 is increased, thereby allowing the ton bag 8 to detach from the suction port 209.

[0070] S5. Stop suctioning. When the torque sensor detects that the real-time weight of the ton bag 8 is less than the preset minimum residual weight, the suction device 2 stops suctioning, the first slide module 4 starts, and drives the hook 5 to move downward in a vertical linear motion, thereby moving the ton bag 8 in the right direction. The operator removes the sling of the ton bag 8 from the hook 5;

[0071] S6. Replace the ton bag. If there is a next ton bag, repeat S1.-S5. to open the new ton bag 8 and take out the materials.

[0072] The above description is an explanation of the present invention, not a limitation of the present invention. The scope of the present invention is defined in the claims. Any modifications may be made within the scope of protection of the present invention.

Claims

1. A ton bag automatic opening and loading system, characterized by: The invention comprises a frame (1), a material suction device (2) is installed on the top of the frame (1), a cutting knife device (3) is installed on the material suction device (2), a plurality of first slide modules (4) are installed in the middle of the frame (1), an output end of each first slide module (4) is connected to a hook (5), an electric control box (7) is fixed on the frame (1), and a control system is installed in the electric control box (7); When the ton bag (8) is opened by the ton bag automatic opening and loading system, the ton bag (8) is placed in the middle of several first slide modules (4), and several slings of the ton bag (8) are hung on the corresponding hooks (5). The first slide module (4) drives the ton bag (8) to move upward in a straight line along the vertical direction through the corresponding hooks (5), thereby lifting the ton bag (8) to the target position; A safety grating (9) is mounted on the feeding end of the frame (1); The structure of the material suction device (2) is as follows: it comprises a second slide module (201) fixed on the top of the frame (1); the output end of the second slide module (201) is connected to a material suction pipe group for suctioning materials; the second slide module (201) drives the material suction pipe group to perform a linear motion of ascending or descending in the vertical direction; The suction pipe assembly comprises a cylindrical and hollow outer suction pipe (210), an inner suction pipe (203) is concentrically mounted inside the outer suction pipe (210), and a suction port (209) is formed between the outer side wall of the bottom of the inner suction pipe (203) and the inner side wall of the bottom of the outer suction pipe (210); The inner suction tube (203) is cylindrical and hollow inside, and the top and bottom of the inner suction tube (203) are respectively equipped with sealing heads. A plurality of air supply ports (204) are provided along the circumference of the outer circumference of the inner suction tube (203), and the air supply ports (204) extend to the outside of the outer suction tube (210). A plurality of through holes (211) are provided on the sealing head at the bottom of the inner suction tube (203); When the suction device (2) sucks material, the outer suction tube (210) is connected to a negative pressure air source, and the inner suction tube (203) is connected to a positive pressure air source through the air supply port (204). The negative pressure air source drives the outer suction tube (210) to suck the material in the ton bag (8) from the suction port (209) to between the inner side wall of the outer suction tube (210) and the outer side wall of the inner suction tube (203), thereby sucking out the material in the ton bag (8); The method for using the automatic bag opening and loading system includes the following steps: S1. Preparation: Place the ton bag (8) on the material receiving seat of the ton bag automatic opening and loading system. The operator hangs the slings of the ton bag (8) one by one on the corresponding hooks (5). The safety grating (9) is required to detect no abnormalities before starting the machine; S2. Opening the bag, the first slide module (4) is started, driving the hook (5) to move upward in a straight line in the vertical direction, thereby lifting the ton bag (8), and then the cutting knife device (3) moves in a straight line in the vertical direction, so that the cutting knife device (3) extends relative to the suction device (2), and then the suction device (2) drives the cutting knife device (3) to move in a straight line in the vertical direction, so that the cutting knife device (3) cuts the ton bag (8); S3. Suctioning: when the ton bag (8) is opened, the cutting knife device (3) moves linearly in the vertical direction, so that the cutting knife device (3) retracts relative to the suction device (2), and then the material inside the ton bag (8) is sucked by the suction device (2), thereby sucking out the material inside the ton bag (8); Two adjacent first slide modules (4) installed on the same side of the frame (1) alternately drive the corresponding hooks (5) to perform linear movements in an ascending or descending direction in the vertical direction, thereby preventing the suction port (209) from being blocked; S4. Clean the residual material, install a torque sensor on the output shaft of the first slide module (4), the torque sensor collects the torque at the output shaft of the first slide module (4) in real time, and converts it into the real-time weight of the ton bag (8) through (Formula 1); T=mgr (Formula 1) In (Equation 1), T represents the torque at the output shaft of the first slide module (4) measured in real time by the torque sensor; m represents the weight of the ton bag (8); r represents the radius of the output shaft extension end of the first slide module (4); g represents the acceleration due to gravity; When the weight of the ton bag (8) measured by the torque sensor is less than 10% of the initial weight, the second slide module (201) is started, driving the suction inner tube (203) to make a downward linear motion in the vertical direction, so that the bag support bracket (208) pushes the ton bag (8) into a cone shape; at the same time, the vibrator (207) is turned on, and the first slide module (4) installed on the frame (1) drives the corresponding hooks (5) one by one to make an upward linear motion in the vertical direction and then return to their original position, so that the materials in the corners and cracks in the ton bag (8) are gathered at the suction port (209); The pressure sensor (206) monitors the pressure in the inner suction pipe (203) in real time. Once the bottom of the ton bag (8) is adsorbed on the suction port (209) due to negative pressure and causes blockage, the positive pressure input at the air supply port (204) is increased, thereby causing the ton bag (8) to be separated from the suction port (209). S5. Stop sucking the material. When the torque sensor detects that the real-time weight value of the ton bag (8) is less than the preset minimum residual value, the material suction device (2) stops sucking the material, and the first slide module (4) starts, driving the hook (5) to move downward in a straight line in the vertical direction, thereby moving the ton bag (8) in the direction of the ton bag. The operator removes the sling of the ton bag (8) from the hook (5); S6. Replace the ton bag. If there is a next ton bag (8), repeat S1-S5 to open the new ton bag (8) and take out the materials.

2. The automatic bag opening and loading system for ton bags according to claim 1, characterized in that: A vibrator (207) is mounted on the outer circumferential surface of the outer suction tube (210).

3. The automatic bag opening and loading system for ton bags according to claim 1, characterized in that: The output end of the second slide module (201) is connected to the material suction outer tube (210) via a clamp (202).

4. The automatic bag opening and loading system for ton bags according to claim 1, characterized in that: A pressure detection port (205) is provided on the outer circumferential surface of the material suction inner tube (203), and a pressure sensor (206) is installed in the pressure detection port (205).

5. The automatic bag opening and loading system for ton bags according to claim 1, characterized in that: The bottom of the outer suction tube (210) is cooperatively mounted with a bag support bracket (208).

6. The automatic bag opening and loading system for ton bags according to claim 1, characterized in that: The structure of the cutting knife device (3) is as follows: it includes a lifting cylinder (303) fixed on the outer side wall of the material suction outer tube (210), the output end of the lifting cylinder (303) is connected to the bag opening knife (301) through the tool holder (306), and the lifting cylinder (303) drives the bag opening knife (301) to move linearly in the vertical direction, thereby making the bag opening knife (301) extend or retract relative to the material suction inner tube (203); The bag opening knife (301) is mounted on the outer side wall of the material suction outer tube (210), and a bevel is provided at the bottom of the bag opening knife (301), so that the bag opening knife (301) is in the shape of a beveled cylinder, and a blade (302) for cutting open the ton bag (8) is provided at a protruding portion of the bottom of the bag opening knife (301).

7. The automatic bag opening and loading system for ton bags according to claim 6, characterized in that: A plurality of guide pillars (305) are mounted on the top of the tool seat (306), a linear bearing (304) is mounted on the outer circumferential surface of each guide pillar (305), and the linear bearing (304) is fixed on the outer circumferential surface of the material suction inner tube (203).

8. The automatic bag opening and loading system for ton bags according to claim 1, characterized in that: The frame (1) is equipped with symmetrically arranged extrusion devices (6). The structure of a single extrusion device (6) is as follows: it includes an extrusion cylinder (601) fixed on the frame (1), the output end of the extrusion cylinder (601) is connected to a beating head (602), and the extrusion cylinder (601) drives the beating head (602) to move linearly in the horizontal direction, thereby beating the ton bag (8) in the ton bag automatic opening and loading system.

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