Automatic reweighing and replenishing device for ton bags

Abstract

The utility model relates to a kind of ton bag automatic re-weighing material supplementing device, and its technical solution main points are: including: support frame, bearing frame, weighing module, prop open module, telescopic material pipe, drive module and material supplementing module;Bearing frame is installed in the inside bottom of support frame by weighing module;Prop open module is slidably installed in the side of support frame, and it is located above bearing frame;Material supplementing module is installed in the side of the top of support frame;The inlet end of telescopic material pipe is communicated with the discharge end of material supplementing module, and its discharge end passes through the top of support frame and is placed above bearing frame;Drive module is installed in the other side of the top of support frame, and its output end passes through the top of support frame and is fixedly connected with the discharge end of telescopic material pipe;The present application integrates weighing, prop open, material supplementing, telescopic guiding function, without manual intervention, re-weighing material supplementing is completed with full automation, and labor intensity is greatly reduced, and operation efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of packaging equipment technology, and more specifically, it relates to an automatic reweighing and replenishing device for ton bags. Background Technology

[0002] Ton bags are commonly used containers for packaging bulk materials and are widely used in industries such as chemicals, building materials, and grain. However, after materials are filled into ton bags, problems such as filling accuracy errors and material spillage often result in the actual weight of the ton bags not reaching the preset standard.

[0003] Currently, the industry mostly uses manual reweighing and manual replenishment for correction. Manual reweighing requires transferring the ton bags to the weighing equipment, and replenishment requires manually opening the ton bag and adding material. This is not only labor-intensive and inefficient, but also difficult to accurately control the replenishment amount. At the same time, manual operation is prone to generating material dust, affecting the working environment, and multiple transfers of ton bags may cause secondary material spillage, further affecting the weight accuracy. In addition, some existing semi-automatic replenishment equipment has defects such as complex structure and inconvenient adjustment, and lacks an integrated mechanism for opening, weighing, and replenishment, which cannot achieve fully automated operation and cannot meet the needs of large-scale production. Therefore, an automatic ton bag reweighing and replenishment device is proposed. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an automatic reweighing and replenishing device for ton bags, so as to solve the technical problems existing in the background technology.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: an automatic re-weighing and replenishing device for ton bags, comprising: a support frame, a load-bearing frame for placing ton bags, a weighing module for weighing the load-bearing frame and the ton bags thereon, an opening module for opening the ton bag opening, a telescopic material tube, a driving module for driving the telescopic material tube to extend and retract, and a replenishing module; the load-bearing frame is installed on the inner bottom of the support frame through the weighing module; the opening module is slidably installed on one side of the support frame and located above the load-bearing frame; the replenishing module is installed on one side of the top of the support frame; the inlet end of the telescopic material tube is connected to the outlet end of the replenishing module, and its outlet end passes through the top of the support frame and is positioned above the load-bearing frame; the driving module is installed on the other side of the top of the support frame, and its output end passes through the top of the support frame and is fixedly connected to the outlet end of the telescopic material tube.

[0006] Optionally, the weighing module includes: 4 weighing sensors; the bottom of the four corners of the load-bearing frame is connected to the 4 weighing sensors and installed on the inner bottom of the support frame.

[0007] Optionally, the load-bearing frame includes: two crossbeams and several drive rollers; the two crossbeams are connected by the several drive rollers; any one of the crossbeams is connected to the support frame by two weighing sensors.

[0008] Optionally, the expansion module includes: a mounting frame, a first motor, a second motor, a third motor, a mounting base, a fixed base, a column, a transmission gear, a first lead screw, a second lead screw, and two clamping arms; the mounting frame is installed inside the support frame and above the load-bearing frame; the fixed base is slidably mounted on the mounting frame; a rack is provided on the mounting frame along its length; the first motor is mounted on the fixed base, and its output end is fixedly connected to the transmission gear; the transmission gear meshes with the rack; the column is fixedly connected to the fixed base; a mounting cavity is provided inside the column; the first lead screw is rotatably mounted in the mounting cavity; the second motor is fixedly mounted on the column. The output end of the first lead screw is connected to the input end of the first lead screw. The mounting base is slidably mounted on the column, and its input end passes through the side wall of the column and is connected to the first lead screw. Two guide columns are parallel to each other on the mounting base. The assembly ends of the two clamping arms are slidably mounted on the mounting frame through the two guide columns, and the two clamping arms are parallel to each other. At least one vacuum suction cup is provided on the clamping surface of the clamping end of the two clamping arms. The second lead screw is rotatably mounted in the gap between the two guide columns. The third motor is mounted on the mounting base, and its output end is connected to the input end of the second lead screw. The second lead screw is connected to the assembly ends of the two clamping arms.

[0009] Optionally, the feeding module includes: a hopper, a screw barrel, a metering screw adapted to the screw barrel, a fourth motor, and a pneumatic butterfly valve; the hopper is installed on one side of the top of the support frame; the screw barrel is installed on the top of the support frame, and its feed end is connected to the hopper; the metering screw is rotatably inserted into the screw barrel; the fourth motor is fixedly connected to the support frame, and its output end is drivenly connected to the input end of the metering screw; the discharge end of the screw barrel is connected to the feed end of the telescopic feed tube through the pneumatic butterfly valve.

[0010] Optionally, the drive module includes: a fifth motor, a transmission belt, two pulleys, a connecting block, and a pull rod; a support column is provided on the top of the support frame; a receiving cavity is opened on the support column along its axial direction; the two pulleys are rotatably mounted on the upper and lower ends of the receiving cavity, respectively; the transmission belt is wound around the two pulleys; the fifth motor is mounted on the support frame, and its output end is connected to the input end of the pulley located below; the connecting block is slidably mounted on the support column; one end of the connecting block is fixedly connected to the transmission belt, and the other end is fixedly connected to the upper end of the pull rod; the lower end of the pull rod passes through the top of the support frame and is fixedly connected to the discharge end of the telescopic material tube, so as to drive the discharge end of the telescopic material tube to enter and exit the ton bag opening.

[0011] This utility model integrates weighing, opening, replenishing, and telescopic guiding functions, requiring no manual intervention and automating the entire weighing and replenishing process, significantly reducing labor intensity and improving work efficiency. It employs a four-point weighing sensor layout combined with a transmission roller-type support frame to minimize the impact of ton bag placement deviations on weight detection, ensuring high weighing accuracy. The replenishing module uses a metering screw conveyor, with the replenishing amount controlled by a fourth motor speed, achieving precise replenishment and avoiding over- or under-replenishment. The opening module can slide along the mounting frame, and the clamping arms are adjustable up and down, adapting to different ton bag sizes and offering strong versatility. The transmission roller-type support frame facilitates ton bag transfer, reducing handling difficulty. The telescopic material tube extends into the bag opening for replenishment, reducing material dust, improving the working environment, and preventing waste caused by material spillage. Attached Figure Description

[0012] Figure 1 This is an assembly drawing of this utility model; Figure 2 This is a structural diagram of the support frame, the expansion module, and the load-bearing frame during assembly of this utility model; Figure 3 This is a schematic diagram of the structural relationship of the supporting module in this utility model; Figure 4 This is a schematic diagram showing the structural relationship between the feeding module and the driving module in this utility model.

[0013] In the diagram: 1. Support frame; 2. Load-bearing frame; 201. Horizontal frame; 202. Transmission roller; 3. Weighing module; 301. Weighing sensor; 4. Spreading module; 401. Mounting frame; 402. First motor; 403. Second motor; 404. Third motor; 405. Mounting base; 406. Fixed base; 407. Column; 408. Transmission gear; 409. Second lead screw; 410. Clamping arm; 411. Rack; 412. Guide column; 413. Vacuum suction cup; 5. Telescopic material tube; 6. Drive module; 601. Fifth motor; 602. Transmission belt; 603. Pulley; 604. Connecting block; 605. Tie rod; 7. Feeding module; 701. Hopper; 702. Screw barrel; 703. Fourth motor; 704. Pneumatic butterfly valve; 8. Support column; 9. Ton bag. Detailed Implementation

[0014] To make the objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. Several embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein.

[0015] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature.

[0016] In this invention, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" of the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature. The terms "vertical," "horizontal," "left," "right," "above," "below," and similar expressions are for illustrative purposes only and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and therefore should not be construed as limiting the invention.

[0017] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0018] like Figure 1 As shown, this utility model provides an automatic reweighing and replenishing device for ton bags 9, including: a support frame 1, a load-bearing frame 2 for placing ton bags 9, a weighing module 3 for weighing the load-bearing frame 2 and the ton bags 9 on it, an opening module 4 for opening the bag opening of the ton bags 9, a telescopic material tube 5, a driving module 6 for driving the telescopic material tube 5 to extend and retract, and a replenishing module 7; the load-bearing frame 2 is installed on the inner bottom of the support frame 1 through the weighing module 3; the opening module 4 is slidably installed on one side of the support frame 1 and located above the load-bearing frame 2; the replenishing module 7 is installed on one side of the top of the support frame 1; the inlet end of the telescopic material tube 5 is connected to the outlet end of the replenishing module 7, and its outlet end passes through the top of the support frame 1 and is positioned above the load-bearing frame 2; the driving module 6 is installed on the other side of the top of the support frame 1, and its output end passes through the top of the support frame 1 and is fixedly connected to the outlet end of the telescopic material tube 5.

[0019] In this embodiment, as Figure 1As shown, support frame 1 serves as the installation foundation for the entire device, providing a support carrier for all functional modules; load-bearing frame 2 is fixed to the inner bottom of support frame 1 via weighing module 3, specifically for supporting the ton bags 9 to be re-weighed and replenished; opening module 4 is slidably mounted inside support frame 1 and located above load-bearing frame 2, used to automatically open the mouth of ton bags 9; replenishment module 7 is installed on one side of the top of support frame 1, responsible for storing and quantitatively outputting replenishment materials; the inlet end of telescopic material pipe 5 is connected to the outlet end of replenishment module 7, and the outlet end extends through the top of support frame 1 to above load-bearing frame 2, used to transport replenishment materials into ton bags 9; drive module 6 is installed on the other side of the top of support frame 1, and its output end is fixed to the outlet end of telescopic material pipe 5, used to drive telescopic material pipe 5 in and out of the mouth of ton bags 9; the overall structure is stable, easy to install, and integrates weighing, opening, replenishment, and telescopic guiding functions, requiring no manual intervention, and automatically completing the re-weighing and replenishment process, significantly reducing labor intensity and improving work efficiency. Furthermore, the weighing module 3 includes: 4 weighing sensors 301; the bottom of the four corners of the load-bearing frame 2 is connected to the bottom of the inner side of the support frame 1 through the 4 weighing sensors 301; the load-bearing frame 2 includes: 2 crossbeams 201 and a plurality of transmission rollers 202; the 2 crossbeams 201 are connected through the plurality of transmission rollers 202; any one of the crossbeams 201 is connected to the support frame 1 through the 2 weighing sensors 301.

[0020] Optionally, the bottom of the load-bearing frame 2 is equipped with a drive motor, and the output end of the drive motor is equipped with a transmission chain. Several transmission rollers 202 are respectively connected to the output end of the drive motor through the transmission chain.

[0021] In this embodiment, as Figure 1-2 As shown, the weighing module 3 consists of four weighing sensors 301. The four sensors are respectively installed at the bottom of the four corners of the load-bearing frame 2. The load-bearing frame 2 is then connected to the bottom of the inner side of the support frame 1 through the sensors to ensure uniform force and accurate data during weighing. In this embodiment, the weighing sensors 301 are mature products on the market and belong to the prior art, so they will not be described in detail here. The load-bearing frame 2 includes two parallel crossbeams 201 and several drive rollers 202. The drive rollers 202 are evenly distributed and their two ends are fixedly connected to the two crossbeams 201 respectively to form a bearing surface that facilitates the transport of the ton bag 9. Two weighing sensors 301 are installed at the bottom of each crossbeam 201. The sensors are stably connected to the support frame 1 without affecting the transport function of the drive rollers 202 on the ton bag 9.

[0022] Further, the expansion module 4 includes: a mounting frame 401, a first motor 402, a second motor 403, a third motor 404, a mounting base 405, a fixed base 406, a column 407, a transmission gear 408, a first lead screw, a second lead screw 409, and two clamping arms 410; the mounting frame 401 is installed inside the support frame 1 and above the load-bearing frame 2; the fixed base 406 is slidably installed on the mounting frame 401; a rack 411 is provided on the mounting frame 401 along its length; the first motor 402 is installed on the fixed base 406, and its output end is fixedly connected to the transmission gear 408; the transmission gear 408 is meshed with the rack 411; the column 407 is fixedly connected to the fixed base 406; the inner side of the column 407 is provided with a mounting cavity; the first lead screw is rotatably installed in the mounting cavity; the second motor 403... The first screw is fixedly installed on the column 407, and its output end is drivenly connected to the input end of the first lead screw; the mounting base 405 is slidably installed on the column 407, and its input end passes through the side wall of the column 407 and is drivenly connected to the first lead screw; two guide columns 412 are parallelly mounted on the mounting base 405; the assembly ends of the two clamping arms 410 are slidably mounted on the mounting frame 401 through the two guide columns 412, and the two clamping arms 410 are parallel to each other; at least one vacuum suction cup 413 is provided on the clamping surface of the clamping end of the two clamping arms 410; the second lead screw 409 is rotatably mounted in the gap between the two guide columns 412; the third motor 404 is mounted on the mounting base 405, and its output end is drivenly connected to the input end of the second lead screw 409; the second lead screw 409 is drivenly connected to the assembly ends of the two clamping arms 410.

[0023] In this embodiment, as Figure 1-3As shown, the mounting frame 401 is horizontally fixed inside the support frame 1 and located directly above the load-bearing frame 2. The length direction of the mounting frame 401 is consistent with the conveying direction of the load-bearing frame 2. The fixed seat 406 is mounted on the mounting frame 401 through a sliding fit structure and can slide along the length direction of the mounting frame 401. A rack 411 is fixedly provided on the mounting frame 401 along its length direction. The first motor 402 is fixed on the fixed seat 406, and its output end is connected to the transmission gear 408. The transmission gear 408 meshes with the rack 411, and the first motor 402 drives the transmission gear 408 through the first motor 402. Rotation of the 8-axis causes the fixed base 406 to slide along the mounting bracket 401, thereby adjusting the horizontal position of the expansion module 4. The column 407 is vertically fixed to the top of the fixed base 406, and an installation cavity is provided on the inner side of the column 407. The first lead screw is rotatably installed in the installation cavity through a bearing. The second motor 403 is fixed to the top of the column 407, and its output end is connected to the input end of the first lead screw through a coupling. The mounting base 405 is sleeved on the outside of the column 407, and the inner side of the mounting base 405 extends out to pass through a groove in the side wall of the column 407, communicating with the first lead screw. The first lead screw is driven to rotate by the second motor 403 via a threaded transmission connection, which can drive the mounting base 405 to slide up and down along the column 407, thereby adjusting the opening height. Two guide columns 412 are fixed parallel to each other on the mounting base 405. The assembly ends of the two clamping arms 410 are respectively engaged with the two guide columns 412 through sliding sleeves to achieve slidable installation. The two clamping arms 410 are kept parallel to each other, and their clamping ends face the load-bearing frame 2. At least one vacuum suction cup 413 is fixed on the clamping surface of each of the two clamping arms 410 for adsorbing the edge of the bag opening 9 and lifting it. To improve clamping stability, the second lead screw 409 is rotatably mounted in the gap between the two guide posts 412 via bearings. The third motor 404 is fixed on one side of the mounting base 405, and its output end is connected to the input end of the second lead screw 409. The assembly ends of the two clamping arms 410 are provided with threaded holes that are compatible with the second lead screw 409, and the threads of the two clamping arms 410 are opposite in direction. By driving the second lead screw 409 to rotate through the third motor 404, the two clamping arms 410 can be moved closer or further away from each other along the guide posts 412, thereby opening and closing the bag opening.

[0024] Further, the feeding module 7 includes: a hopper 701, a screw barrel 702, a metering screw adapted to the screw barrel 702, a fourth motor 703, and a pneumatic butterfly valve 704; the hopper 701 is installed on one side of the top of the support frame 1; the screw barrel 702 is installed on the top of the support frame 1, and its feed end is connected to the hopper 701; the metering screw is rotatably inserted into the screw barrel 702; the fourth motor 703 is fixedly connected to the support frame 1, and its output end is drivenly connected to the input end of the metering screw; the discharge end of the screw barrel 702 is connected to the feed end of the telescopic material pipe 5 through the pneumatic butterfly valve 704.

[0025] In this embodiment, as Figure 1 , 3 As shown, the hopper 701 is fixedly installed on one side of the top of the support frame 1 for storing materials to be replenished. The discharge port of the hopper 701 is set downwards. The screw barrel 702 is horizontally fixed on the top of the support frame 1. Its feed end is connected to the discharge port of the hopper 701 through a pipe to ensure that the material in the hopper 701 can smoothly enter the screw barrel 702. The metering screw is adapted to the inner wall of the screw barrel 702 and can be rotatably inserted into the screw barrel 702 through a bearing. The fourth motor 703 is fixedly connected to the support frame 1 through a bracket. Its output end is connected to the input end of the metering screw through a coupling. The fourth motor 703 drives the metering screw to rotate, which can realize the quantitative pushing of materials. The discharge end of the screw barrel 702 is connected to the input end of the pneumatic butterfly valve 704 through a pipe. The output end of the pneumatic butterfly valve 704 is connected to the feed end of the telescopic material pipe 5. By controlling the opening and closing of the pneumatic butterfly valve 704, the on / off control of the replenishment channel can be realized.

[0026] Further, the drive module 6 includes: a fifth motor 601, a transmission belt 602, two pulleys 603, a connecting block 604, and a pull rod 605; a support column 8 is provided on the top of the support frame 1; a receiving cavity is opened on the support column 8 along its axial direction; the two pulleys 603 are rotatably mounted on the upper and lower ends of the receiving cavity respectively; the transmission belt is wound around the two pulleys 603; the fifth motor 601 is mounted on the support frame 1, and its output end is connected to the input end of the pulley 603 located below; the connecting block 604 is slidably mounted on the support column 8; one end of the connecting block 604 is fixedly connected to the transmission belt 602, and the other end is fixedly connected to the upper end of the pull rod 605; the lower end of the pull rod 605 passes through the top of the support frame 1 and is fixedly connected to the discharge end of the telescopic material tube 5, so as to drive the discharge end of the telescopic material tube 5 to enter and exit the bag opening of the ton bag 9.

[0027] In this embodiment, as Figure 1 , 3As shown, a vertical support column 8 is fixedly installed on the top of the support frame 1. The support column 8 has an axially oriented cavity. Two pulleys 603 are rotatably mounted on the upper and lower ends of the cavity via bearings. A transmission belt 602 is wound around the two pulleys 603 to form a closed transmission structure. A fifth motor 601 is fixed on the top side of the support frame 1. Its output end is connected to the input end of the pulley 603 located at the lower end of the cavity. The fifth motor 601 drives the pulley 603 to rotate, which in turn drives the transmission belt 602 to circulate. A connecting block 604 is installed on the outside of the support column 8 via a sliding structure. One end of the connecting block 604 is connected to the transmission belt. 602 is fixedly connected, and the other end is fixed to the upper end of the pull rod 605; the pull rod 605 is set vertically, and its lower end passes through the through hole at the top of the support frame 1 and is fixedly connected to the outside of the discharge end of the telescopic material tube 5; when the transmission belt 602 moves, the pull rod 605 can be driven to move up and down through the connecting block 604, thereby driving the discharge end of the telescopic material tube 5 to extend and retract up and down, realizing the action of entering and exiting the bag opening of the ton bag 9; the telescopic material tube 5 adopts a telescopic corrugated pipe structure, and its inlet end is fixedly connected to the output end of the pneumatic butterfly valve 704. The discharge end can move up and down under the drive of the drive module 6 to ensure that the material can be accurately delivered into the ton bag 9 when replenishing, avoiding dust.

[0028] In the specific implementation process, such as Figure 1-4As shown, the filled ton bag 9 is conveyed to the designated position of the load-bearing frame 2 via the transmission roller 202. Four weighing sensors 301 synchronously collect the actual weight of the ton bag 9 and transmit the weight data to the control system. The control system compares the actual weight with the preset standard weight to determine whether replenishment is needed (if the ton bag 9 is conveyed to the designated position of the load-bearing frame 2 together with the pallet, the preset standard weight includes the weight of the pallet; the specific preset standard weight can be set according to the actual conveying situation); the opening module 4 positions and opens the bag opening: if replenishment is needed, the control system starts the first motor. 402. Drive the fixed base 406 to slide along the mounting bracket 401, so that the opening module 4 moves directly above the opening of the ton bag 9; then start the second motor 403 to drive the mounting base 405 to move downward along the column 407, so that the clamping end of the clamping arm 410 is close to the opening of the ton bag 9; then start the third motor 404 to drive the two clamping arms 410 to move closer to each other, and use the vacuum suction cup 413 to adsorb the edge of the bag opening, and then drive the third motor 404 in the opposite direction to move the two clamping arms 410 away from each other, opening the opening of the ton bag 9; then, the control system starts the fifth motor 601 to drive the pulley 6 03 rotates, driving the pull rod 605 downwards via the transmission belt 602, which in turn drives the discharge end of the telescopic material tube 5 downwards into the open opening of the ton bag 9, preventing material spillage during replenishment; after the telescopic material tube 5 enters the opening of the ton bag 9, the control system opens the pneumatic butterfly valve 704 and simultaneously starts the fourth motor 703, driving the metering screw to rotate. The material in the hopper 701 enters the screw barrel 702 and is quantitatively pushed by the metering screw to the telescopic material tube 5, which then transports it into the ton bag 9; during the replenishment process, the weighing sensor 301 provides real-time feedback on the weight of the ton bag 9, and when the weight reaches... When the preset standard is reached, the control system shuts down the fourth motor 703 and the pneumatic butterfly valve 704, stopping the material replenishment. After the material replenishment is completed, the fifth motor 601 rotates in the reverse direction, driving the discharge end of the telescopic material tube 5 to move upward out of the bag opening of the ton bag 9. The third motor 404 drives the clamping arms 410 to move closer to each other, releasing the bag opening, and the vacuum suction cup 413 stops adsorption. The second motor 403 drives the mounting base 405 to reset upward, and the first motor 402 drives the fixed base 406 to move to the initial position. Finally, the replenished ton bag 9 is conveyed out of the load-bearing frame 2 through the transmission roller 202, completing one re-weighing and replenishment operation.

[0029] This utility model discloses an automatic re-weighing and refilling device for ton bags, integrating weighing, opening, refilling, and telescopic guiding functions. It requires no manual intervention, completing the re-weighing and refilling process fully automatically, significantly reducing labor intensity and improving work efficiency. It employs a four-point weighing sensor layout combined with a transmission roller-type support frame to reduce the impact of ton bag placement deviations on weight detection, ensuring high weighing accuracy. The refilling module uses a metering screw conveyor, with the refilling amount controlled by the speed of a fourth motor, achieving precise refilling and avoiding over- or under-refilling. The opening module can slide along the mounting frame, and the clamping arms are adjustable up and down, adapting to different ton bag specifications and offering strong versatility. The transmission roller-type support frame facilitates ton bag transfer, reducing handling difficulty. The telescopic material tube extends into the bag opening for refilling, reducing material dust, improving the working environment, and preventing waste caused by material spillage.

[0030] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. An automatic reweighing and replenishing device for ton bags, characterized in that, include: The system comprises a support frame, a load-bearing frame for placing ton bags, a weighing module for weighing the load-bearing frame and the ton bags thereon, an opening module for opening the ton bag opening, a telescopic material tube, a drive module for extending and retracting the telescopic material tube, and a feeding module. The load-bearing frame is installed on the inner bottom of the support frame via the weighing module. The opening module is slidably installed on one side of the support frame and located above the load-bearing frame. The feeding module is installed on one side of the top of the support frame. The inlet end of the telescopic material tube is connected to the outlet end of the feeding module, and its outlet end passes through the top of the support frame and is positioned above the load-bearing frame. The drive module is installed on the other side of the top of the support frame, and its output end passes through the top of the support frame and is fixedly connected to the outlet end of the telescopic material tube.

2. The automatic reweighing and replenishing device for ton bags according to claim 1, characterized in that, The weighing module includes four weighing sensors; the bottom of the four corners of the load-bearing frame is connected to the four weighing sensors and installed on the inner bottom of the support frame.

3. The automatic reweighing and replenishing device for ton bags according to claim 2, characterized in that, The load-bearing frame includes: two crossbeams and several transmission rollers; the two crossbeams are connected by the several transmission rollers; any one of the crossbeams is connected to the support frame by two weighing sensors.

4. The automatic reweighing and replenishing device for ton bags according to claim 1, characterized in that, The expansion module includes: a mounting frame, a first motor, a second motor, a third motor, a mounting base, a fixed base, a column, a transmission gear, a first lead screw, a second lead screw, and two clamping arms; the mounting frame is installed inside the support frame and above the load-bearing frame; the fixed base is slidably mounted on the mounting frame; a rack is provided on the mounting frame along its length; the first motor is mounted on the fixed base, and its output end is fixedly connected to the transmission gear; the transmission gear meshes with the rack. The column is fixedly connected to the fixed base; the inner side of the column is provided with a mounting cavity; the first lead screw is rotatably installed in the mounting cavity; the second motor is fixedly installed on the column, and its output end is drivenly connected to the input end of the first lead screw; the mounting base is slidably installed on the column, and its input end passes through the side wall of the column and is drivenly connected to the first lead screw; two guide columns are parallelly mounted on the mounting base; the assembly ends of the two clamping arms are slidably mounted on the mounting frame through the two guide columns, and the two clamping arms are parallel to each other; at least one vacuum suction cup is provided on the clamping surface of the clamping end of the two clamping arms; the second lead screw is rotatably mounted in the gap between the two guide columns; the third motor is installed on the mounting base, and its output end is drivenly connected to the input end of the second lead screw; the second lead screw is drivenly connected to the assembly ends of the two clamping arms.

5. The automatic reweighing and replenishing device for ton bags according to claim 1, characterized in that, The feeding module includes: a hopper, a screw barrel, a metering screw adapted to the screw barrel, a fourth motor, and a pneumatic butterfly valve; the hopper is installed on one side of the top of the support frame; the screw barrel is installed on the top of the support frame, and its feed end is connected to the hopper; the metering screw is rotatably inserted into the screw barrel; the fourth motor is fixedly connected to the support frame, and its output end is drivenly connected to the input end of the metering screw; the discharge end of the screw barrel is connected to the feed end of the telescopic feed tube through the pneumatic butterfly valve.

6. The automatic reweighing and replenishing device for ton bags according to claim 1, characterized in that, The drive module includes: a fifth motor, a transmission belt, two pulleys, a connecting block, and a pull rod; a support column is provided on the top of the support frame; a receiving cavity is opened on the support column along its axial direction; the two pulleys are rotatably mounted on the upper and lower ends of the receiving cavity, respectively; the transmission belt is wound around the two pulleys; the fifth motor is mounted on the support frame, and its output end is connected to the input end of the pulley located below; the connecting block is slidably mounted on the support column; one end of the connecting block is fixedly connected to the transmission belt, and the other end is fixedly connected to the upper end of the pull rod; the lower end of the pull rod passes through the top of the support frame and is fixedly connected to the discharge end of the telescopic material tube, so as to drive the discharge end of the telescopic material tube to enter and exit the ton bag opening.

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