A conveying mechanism for feeding cloth into a packaging bag and an automatic bagging machine

Abstract

A conveying mechanism for feeding cloth into a packaging bag and an automatic bagging machine. The conveying mechanism comprises a workbench, a belt conveying mechanism and a pushing mechanism. The belt conveying mechanism comprises a frame and a conveying belt; the pushing mechanism comprises a mounting frame, a first driving device, a pushing assembly and a second driving device; the mounting frame is slidingly connected to the workbench, the first driving device is used to drive the mounting frame to move synchronously along the conveying direction of the conveying belt and to move reversely; the pushing assembly comprises a limiting plate and a pushing block fixedly connected to the bottom of the limiting plate, the limiting plate is movable up and down relative to the mounting frame, the bottom surface of the limiting plate is provided with a limiting surface at a position away from the mounting frame, the side surface of the pushing block away from the mounting frame is a pushing surface, and the bottom of the pushing block is in abutting engagement with the conveying belt; the second driving device is arranged on the mounting frame and is used to drive the pushing assembly to move up and down. Compared with the prior art, the conveying mechanism can improve the reliability of cloth conveying into the packaging bag and the packaging quality.

Description

Technical Field

[0001] This utility model belongs to the field of conveying mechanism technology, specifically relating to a conveying mechanism for feeding fabric into packaging bags, and an automatic bagging machine using the conveying mechanism. Background Technology

[0002] Currently, some fabrics, after being processed through printing and dyeing, are packaged into thin film bags. Figure 1 Taking printed and dyed fabrics as an example, the process involves manually folding the two sides of the fabric towards the center line, stacking the folded fabrics to a certain quantity, and then packing them into a film bag. Since printed and dyed fabrics are usually 1m-2m long and made of soft, lightweight materials, manually pushing the fabrics into the bag is time-consuming, inefficient, and may cause wrinkles or creases, affecting the quality of the fabric.

[0003] Currently, packaging machines are used to package products in the food and pharmaceutical industries. For example, the horizontal packaging machine provided in authorization announcement number CN216709679U can realize the automatic packaging of products. The device discloses a bag opening and closing mechanism, which includes an upper suction component and a lower suction component that can move up and down. The upper and lower suction components suck up the upper and lower sides of the bag opening, thereby opening and closing the bag opening.

[0004] Fabrics are typically transported using belt conveyors. Therefore, the applicant attempted to use the aforementioned bag opening and closing mechanism to open the film bag and then transport the fabric into it via a belt conveyor. Once the fabric is inside the film bag, the fabric within the bag is no longer driven by the belt; only the fabric on the belt is propelled. However, after the fabric has been transported a certain distance into the film bag, there is insufficient power to drive it further inside, ultimately leading to bagging failure. Furthermore, as the friction experienced by the fabric gradually increases inside the film bag while the belt's driving force gradually decreases, the fabric tends to arch near the center. Folded and stacked fabric is prone to misalignment and wrinkles at these arched areas, resulting in poor packaging quality. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a conveying mechanism for feeding fabric into packaging bags.

[0006] To achieve the above objectives, this utility model discloses a conveying mechanism for feeding fabric into packaging bags, including a workbench, a belt conveyor mechanism, and a pushing mechanism;

[0007] The belt conveyor mechanism includes a frame and a conveyor belt, the frame is mounted on the workbench, and the belt is mounted on the frame;

[0008] The push mechanism includes a mounting frame, a first driving device, a push assembly, and a second driving device. The mounting frame is slidably connected to the worktable. The first driving device drives the mounting frame to move synchronously and in the opposite direction along the conveyor belt. The push assembly includes a limiting plate and a push block fixedly connected to the bottom of the limiting plate. The limiting plate can move up and down relative to the mounting frame. The bottom surface of the limiting plate has a limiting surface on the side of the push block away from the mounting frame. The limiting surface is horizontally set. The side of the push block away from the mounting frame is a push surface. The bottom of the push block abuts against the conveyor belt. The second driving device is mounted on the mounting frame and drives the push assembly to move up and down.

[0009] Preferably, the pushing component further includes a connecting plate and a reinforcing rib. The connecting plate is slidably connected to the mounting frame. The first end of the reinforcing rib is fixedly connected to the connecting plate, and the second end of the reinforcing rib extends out along the conveying direction of the conveyor belt. The pushing block is located beside the second end of the reinforcing rib.

[0010] Preferably, the thickness of the second end of the reinforcing rib gradually decreases outward.

[0011] Preferably, it also includes a bag-supporting mechanism disposed at the end of the conveyor belt, the bag-supporting mechanism comprising two sets of bag-supporting components, the two sets of bag-supporting components being disposed on both sides of the width direction of the conveyor belt;

[0012] The bag-supporting assembly includes a side U-shaped strip and a resetting component; one end of the side U-shaped strip is rotatably connected to the worktable, and the other end of the side U-shaped strip is the bag-supporting part, with the internal height of the side U-shaped strip not less than the height of the fabric to be packaged; one end of the resetting component is fixed, and the other end of the resetting component cooperates with the side U-shaped strip to pull the side U-shaped strip to a closed state, in which the U-shaped opening of the side U-shaped strip faces the conveyor belt; the side U-shaped strip is pushed to an open state by the fabric to be packaged, in which the U-shaped openings of the two sets of bag-supporting assemblies are arranged facing each other, and the distance between the bottom of the U-shape is adapted to the width of the fabric to be packaged.

[0013] Preferably, the belt conveyor mechanism further includes two support plates, both of which are arranged along the conveying direction of the conveyor belt and respectively located on both sides of the conveyor belt. The minimum distance between the two support plates is less than the width of the fabric to be packaged, and the maximum distance between the two support plates is greater than the width of the fabric to be packaged.

[0014] The end of the support plate extends into the corresponding side U-shaped strip and engages with the side U-shaped strip in the closed state.

[0015] Preferably, the U-shaped side strip gradually enlarges at the port near the connecting shaft to form a flared section.

[0016] Preferably, each of the side U-shaped strips is provided with a rotary pressing cylinder, and the output end of the rotary pressing cylinder is provided with a pressing bag component, the bottom of which abuts against the top surface of the side U-shaped strip.

[0017] This invention also provides an automatic bagging machine that uses the above-described conveying mechanism for feeding fabric into packaging bags.

[0018] An automatic bagging machine includes a conveying mechanism, a packaging table, and a bag opening and closing mechanism disposed on the packaging table. The conveying mechanism is any of the above-mentioned conveying mechanisms for feeding fabric into the packaging bag.

[0019] The end of the conveyor belt is located at the end of the workbench, and the conveying mechanism and the packaging table are arranged in sequence.

[0020] Preferably, the workbench is provided with a bag-strapping mechanism, which includes a third driving device and a bag-strapping strip. The bag-strapping strip is mounted on the third driving device and moves up and down under the action of the third driving device.

[0021] Preferably, the bottom of the packaging platform is provided with a fixing mechanism, which includes a fourth driving device and a fixing member. The fourth driving device is fixed to the bottom of the packaging platform, and the fixing member is installed on the fourth driving device. Under the action of the fourth driving device, the fixing member can move to abut against the end face of the packaging platform near the conveying mechanism.

[0022] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0023] After the fabric is on the conveyor belt, the limiting surface of the limiting plate is moved to contact the top surface of the fabric to be packaged by the action of the first driving device and the second driving device, and the pushing surface of the pushing block is moved to contact the end face of the fabric to be packaged. The bottom surface of the pushing block contacts the conveyor belt. Then, under the action of the conveyor belt, the limiting plate and the pushing block, the fabric is pushed into the packaging bag.

[0024] The pusher block pushes the fabric at its end, ensuring sufficient force to push it into the packaging bag and improving the reliability of the packaging process. The limiting plate's limiting surface contacts the top surface of the fabric, limiting its movement. During the pushing process, if the fabric tends to arch, the limiting plate's limiting surface will restrain it, preventing arching and improving packaging quality.

[0025] The push block works in conjunction with the conveyor belt. On the one hand, the push block can push the bottommost piece of fabric, preventing it from getting stuck between the push block and the conveyor belt and ensuring that all fabric can be pushed into the packaging bag. On the other hand, the push block can provide a stable support for the limiting plate, so that the limiting plate, especially its free end, can be basically in a horizontal state. This avoids the problem of pressure being applied to the fabric due to the free end of the limiting plate sagging, which would affect the reliability and quality of packaging.

[0026] The mounting frame moves synchronously with the conveyor belt under the action of the first drive device, that is, the push block moves synchronously with the conveyor belt. This helps to ensure the flatness of the fabric and avoids problems such as misalignment, wrinkles, and surface wear caused by the two being out of sync. It also avoids wear caused by the push block sliding relative to the conveyor belt. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of existing fabric after folding and stacking;

[0028] Figure 2 This is a three-dimensional structural schematic diagram of the conveying mechanism for feeding fabric into a packaging bag according to Example 1.

[0029] Figure 3 for Figure 2 A three-dimensional structural diagram of the push mechanism;

[0030] Figure 4 for Figure 2 A three-dimensional structural diagram of the central support bag assembly;

[0031] Figure 5 for Figure 2 A three-dimensional structural diagram of the central support bag assembly from another perspective;

[0032] Figure 6 This is a three-dimensional structural diagram of the automatic bagging machine in Example 2;

[0033] Figure 7 for Figure 6 A magnified view of a portion of point A in the middle;

[0034] Figure 8 for Figure 6 A three-dimensional structural diagram of the medium-pressure fabric mechanism;

[0035] Figure 9 for Figure 6 A three-dimensional structural diagram of the central packaging platform;

[0036] Figure 10 for Figure 6 A three-dimensional structural diagram of the central packaging platform from another perspective;

[0037] Workbench 100; Gantry 110;

[0038] First belt conveyor mechanism 200; frame 210; conveyor belt 220; support plate 230;

[0039] Pushing mechanism 300; first mounting bracket 310; first driving device 320; motor 321; reducer 322; gear 323; pushing assembly 330; limiting plate 331; limiting surface 3311; pushing block 332; pushing surface 3321; connecting plate 333; reinforcing rib 334; second driving device 340;

[0040] Bag support assembly 400; side U-shaped strip 410; bag support part 411; flared part 412; connecting shaft 420; connecting block 421; rotary pressing cylinder 430; bag pressing component 431;

[0041] Feeding mechanism 500; second belt conveyor mechanism 510; pressing mechanism 520; second mounting frame 521; fifth drive device 522; pressing strip 523;

[0042] Conveying mechanism 600;

[0043] Packaging table 700; vacuum adsorption belt conveyor 710; bag opening and closing mechanism 720; bag placing plate 730; handling mechanism 740; third mounting frame 741; handling suction cup 742;

[0044] Bag-strapping mechanism 800; third drive unit 810; bag-strapping strip 820;

[0045] Fixed mechanism 900; fourth drive device 910; fixing component 920. Detailed Implementation

[0046] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0047] Example 1

[0048] A conveying mechanism for feeding fabric into packaging bags, see [link to details]. Figures 2-5 It includes a workbench 100, a first belt conveyor mechanism 200, and a pushing mechanism 300.

[0049] The first belt conveyor mechanism 200 includes a frame 210 and a conveyor belt 220. The frame 210 is mounted and fixed on the workbench 100, and the conveyor belt 220 is disposed on the frame 210. When driven, it can rotate, thereby conveying fabric. The first belt conveyor mechanism 200 also includes a motor, a reducer, and rollers that drive the conveyor belt 220 to rotate. This is a conventional belt conveyor; its specific structure, connection, and working principle will not be described in detail here.

[0050] The pushing mechanism 300 includes a first mounting frame 310, a first driving device 320, a pushing assembly 330, and a second driving device 340. A guide rail is provided on the worktable 100, arranged along the conveying direction of the conveyor belt 220. The first mounting frame 310 is slidably connected to the worktable 100 via the guide rail. The first driving device 320 is fixed to the first mounting frame 310 and is used to drive the first mounting frame 310 to move synchronously along the conveying direction of the conveyor belt 220 and to move in the opposite direction along the conveyor belt 220. Specifically, the worktable 100 is provided with a rack arranged in the same direction as the guide rail. The first driving device 320 includes a motor 321, a reducer 322, and a gear 323. The reducer 322 is fixed to the first mounting frame 310, and its two ends are respectively connected to the rotating shaft of the motor 321 and the gear 323. The gear 323 engages with the rack. When the motor 321 runs, the engagement of the gear 323 with the rack causes the first mounting frame 310 to slide along the guide rail. The pushing component 330 includes a limiting plate 331 and a pushing block 332 fixedly connected to the bottom of the limiting plate 331. The limiting plate 331 can move up and down relative to the first mounting frame 310. A limiting surface 3311 is located on the bottom surface of the limiting plate 331, on the side of the pushing block 332 away from the first mounting frame 310. The limiting surface 3311 is horizontally positioned. In this embodiment, the length of the limiting surface 3311 is greater than half the length of the fabric to be packaged. Preferably, the length of the limiting surface 3311 is approximately two-thirds the length of the fabric to be packaged. The width of the limiting plate is less than the width of the fabric to be packaged, allowing it to enter the packaging bag. The pushing block 332 is a strip-shaped block arranged along the width direction of the limiting plate 331, with both ends extending to the two long sides of the limiting plate 331. The side of the pushing block 332 away from the first mounting frame 310 is the pushing surface 3321. The bottom of the pushing block 332 abuts against the conveyor belt 220. The second driving device 340 is preferably a cylinder, which is mounted and fixed on the first mounting bracket 310 and is used to drive the push component 330 to move up and down, thereby driving the push component 330 to move up and down.

[0051] After the fabric is on the conveyor belt 220, the first driving device 320 and the second driving device 340 move the limiting surface 3311 of the limiting plate 331 to contact the top surface of the fabric to be packaged, and move the pushing surface 3321 of the pushing block 332 to contact the end face of the fabric to be packaged. The bottom surface of the pushing block 332 contacts the conveyor belt 220. Then, under the action of the conveyor belt 220, the limiting plate 331, and the pushing block 332, the fabric is pushed into the packaging bag. After the fabric is completely pushed into the packaging bag, the first driving device 320 drives the first mounting frame 310 to move to the initial position, and at the same time, the second driving device 340 drives the pushing assembly 330 to move upward to prepare for the next fabric loading. The above-mentioned pushing assembly 330 has the following beneficial effects:

[0052] (1) The pusher block 332 pushes the fabric at the end of the fabric, which ensures that the fabric has sufficient power to push it into the packaging bag, improving the reliability of the packaging process. The limiting surface 3311 of the limiting plate 331 contacts the top surface of the fabric and limits the top surface of the fabric. When the fabric tends to arch during the process of pushing the fabric into the packaging bag, it will be limited by the limiting surface 3311 of the limiting plate 331, so that the fabric can remain basically flat, avoid arching, and improve the packaging quality.

[0053] (2) The push block 332 abuts against the conveyor belt 220. On the one hand, the push block 332 can push the bottom piece of cloth, preventing the bottom piece of cloth from being unable to be pushed and getting stuck between the push block 332 and the conveyor belt 220, ensuring that all pieces of cloth can be pushed into the packaging bag. On the other hand, the push block 332 can provide a stable support for the limiting plate 331, so that the limiting plate 331, especially its free end, can be basically in a horizontal state, avoiding the problem of pressure on the cloth due to the free end of the limiting plate 331 drooping, which would affect the packaging reliability and packaging quality.

[0054] (3) The first mounting bracket 310 moves synchronously with the conveyor belt 220 under the action of the first driving device 320 (at the same speed), that is, the push block 332 moves synchronously with the conveyor belt 220. This helps to ensure the flatness of the fabric and avoids the problem of misalignment, wrinkles and surface wear caused by the two being out of sync. It also avoids the problem of wear caused by the push block 332 sliding relative to the conveyor belt 220.

[0055] In this embodiment, the pushing component 330 further includes a connecting plate 333 and reinforcing ribs 334. The connecting plate 333 is slidably connected to the first mounting frame 310, and the output end of the second driving device 340 is connected to the connecting plate 333 to drive the connecting plate 333 to move up and down. There are two reinforcing ribs 334. The first end of each reinforcing rib 334 is fixedly connected to the bottom of the connecting plate 333, and the second end of the reinforcing rib 334 extends along the conveying direction of the conveyor belt 220. The thickness of this end gradually decreases outward, and one end of the limiting plate 331 is fixedly connected to the bottom of the two reinforcing ribs 334. The pushing block 332 is located beside the second end of the reinforcing rib 334. Taking this embodiment as an example, the fabric bagging is performed on the packaging table 700 described below. After the packaging bag is transported to the packaging table 700 and the bag opening is opened, the pushing component 330 pushes the fabric into the packaging bag. Because there is a certain distance between the workbench 100 and the packaging table 700, and other mechanisms are installed there, the limiting plate 331 needs to be reserved with a length that can span between the workbench 100 and the packaging table 700. However, this further increases the length of the limiting plate 331 and reduces its rigidity. The reinforcing rib 334 provided between the connecting plate 333 and the limiting plate 331 can enhance the rigidity and structural reliability of the limiting plate 331.

[0056] In this embodiment, the conveying mechanism 600 further includes a bag-supporting mechanism located at the end of the conveyor belt 220. The bag-supporting mechanism includes two sets of bag-supporting assemblies 400. A gantry frame 110 is provided on the workbench 100, and the two sets of bag-supporting assemblies 400 are respectively located on both sides of the gantry frame 110. The two sets of bag-supporting assemblies 400 have the same structure, and one set will be described below.

[0057] The bag-supporting assembly 400 includes a side U-shaped strip 410 and a resetting member (not shown in the figure). The side U-shaped strip 410 is U-shaped, with one end rotatably connected to the gantry frame 110 via a vertical connecting shaft 420, and the other end of the side U-shaped strip 410 forming the bag-supporting part 411. The internal height of the side U-shaped strip 410 (i.e., the distance between the two inner side walls of the U-shape) is not less than the height of the fabric to be packaged, so that after the fabric is output from the conveyor belt 220, both sides of the fabric can move through the side U-shaped strips 410 of the two bag-supporting assemblies 400 to the packaging bag on the packaging table 700. The resetting member is a spring, with one end fixed to the worktable 100, and a connecting block 421 fixed to the connecting shaft 420. The other end of the resetting member is fixed to the connecting block 421, thereby pulling the connecting block 421 to rotate the connecting shaft 420, causing the side U-shaped strip 410 to rotate to a closed state. In the closed state, the side U-shaped strips 410 are arranged along the width direction of the conveyor belt 220, with the U-shaped opening facing the conveyor belt 220. The side U-shaped strips 410 of the two sets of bag-supporting assemblies 400 are located on the same straight line. The side U-shaped strips 410 can rotate to the closed state to avoid interference with the bag-straightening mechanism 800 described below. When pushing the fabric, the side U-shaped strips 410 rotate to the open state under the push of the fabric. During the rotation to the open state, the bag-supporting part 411 of the side U-shaped strips 410 rotates into the opened bag opening. The bag-supporting parts 411 of the two side U-shaped strips 410 can support both sides of the bag opening, keeping the bag opening in a stable open state. After the two side U-shaped strips 410 are opened, the fabric moves through the two side U-shaped strips 410 into the bag on the packaging table 700. When the fabric is fully pushed into the packaging bag and the limiting plate moves to the initial position, the side U-shaped strip 410 rotates to the closed state under the action of the reset component.

[0058] The rotatable side U-shaped strip 410 configured in the bag support assembly 400 can rotate to a closed state for obstacle avoidance and to an open state to support the bag opening, maintaining a stable open state for easy pushing of the fabric into the packaging bag. Furthermore, it can also serve as a connector between the workbench 100 and the packaging table 700, preventing the fabric from getting stuck in the gap between the two tables and causing packaging failure. After the fabric enters the side U-shaped groove of the side U-shaped strip 410, the side U-shaped strip 410 acts as a guide, guiding the fabric into the packaging bag, ensuring a smooth packaging process and improving the reliability and quality of the packaging.

[0059] To ensure the precise movement of both sides of the fabric into the side U-shaped strip 410 for pushing the side U-shaped strip 410, in this embodiment, the first belt conveyor mechanism 200 further includes two support plates 230 fixed to the worktable 100. Both support plates 230 are arranged along the conveying direction of the conveyor belt 220 and are located on both sides of the conveyor belt 220. The minimum distance between the two support plates 230 is less than the width of the fabric to be packaged, and the maximum distance between the two support plates 230 is greater than the width of the fabric to be packaged. After the fabric is placed on the conveyor belt 220, its two sides are respectively located on the two support plates 230. The ends of the support plates 230 extend into the side U-shaped strip 410, allowing the ends of the fabric to smoothly enter the side U-shaped strip 410. When the side U-shaped strip 410 is in a closed state, it engages with the corresponding support plate 230, ensuring a stable closed state for the side U-shaped strip 410.

[0060] To further facilitate the movement of the fabric into the side U-shaped strip 410, the port of the side U-shaped strip 410 near the connecting shaft 420 gradually enlarges to form a flared section 412.

[0061] In this embodiment, each side U-shaped strip 410 is provided with a rotary pressing cylinder 430. The output end of the rotary pressing cylinder 430 is provided with a bag pressing component 431, and the bottom of the bag pressing component 431 abuts against the top surface of the side U-shaped strip 410. When the bag supporting part 411 of the side U-shaped strip 410 supports the bag opening, the rotary pressing cylinder 430 rotates the bag pressing component 431 so that the bottom of the bag pressing component 431 presses against the side U-shaped strip 410, thereby improving the stability of the bag opening during the packaging process.

[0062] Example 2

[0063] An automatic bagging machine, see Figures 6-10 It includes a feeding mechanism 500, a conveying mechanism 600, and a packaging table 700.

[0064] The feeding mechanism 500 includes a second belt conveyor mechanism 510 and a fabric pressing mechanism 520. The second belt conveyor mechanism 510 is identical to the first belt conveyor mechanism 200, employing a conventional belt conveyor. Unlike the first belt conveyor mechanism 200, the belt width of the second belt conveyor mechanism 510 is slightly larger, allowing the entire fabric roll to be placed on its belt. After multiple folded fabric rolls are stacked on the second belt conveyor mechanism 510, they can be conveyed to the conveyor mechanism 600. The fabric pressing mechanism 520 includes a second mounting frame 521, a fifth drive device 522, and two pressing strips 523. The second mounting frame 521 is fixed to the frame of the second belt conveyor mechanism 510. The fifth drive device 522 is a cylinder, fixed to the second mounting frame 521. Both pressing strips 523 are arranged along the conveying direction of the second belt conveyor mechanism 510, and the distance between them is adapted to the width of the fabric roll to be packaged. After the fabric is stacked on the second belt conveyor 510, the fifth drive device 522 drives the two pressing strips 523 to press down on both sides of the fabric, and the bending angle of the fabric is compacted to prevent the fabric from being thrown up at the bending angle.

[0065] The conveying mechanism 600 adopts the conveying mechanism of Embodiment 1 for feeding fabric into packaging bags, wherein the conveyor belts 220 of the first belt conveyor mechanism 200 are located at both ends of the workbench 100, so that they can be connected with the second belt conveyor mechanism 510.

[0066] It is understood that during the process of conveying the fabric from the second belt conveyor 510 to the first belt conveyor 200, the fabric is driven not only by the second belt conveyor 510 but also by the first belt conveyor 200. The fabric is driven by sufficient power to ensure that it can be conveyed from the second belt conveyor 510 to the first belt conveyor 200.

[0067] A vacuum adsorption belt conveyor 710 is provided on the packaging table 700 to carry, adsorb, and move the packaging bags, and a bag opening and closing mechanism 720 is provided on the packaging table 700 near the end of the first belt conveyor mechanism 200 to open the bag opening. The vacuum adsorption belt conveyor 710 and the bag opening and closing mechanism 720 are both existing devices, and will not be described in detail.

[0068] The second belt conveyor mechanism 510, the first belt conveyor mechanism 200, and the vacuum adsorption belt conveyor 710 are arranged sequentially in the same straight direction, enabling continuous actions of feeding, conveying, and packaging.

[0069] The packaging table 700 is also equipped with a bag-placement plate 730 and a conveying mechanism 740. The bag-placement plate 730 is located beside the vacuum adsorption belt conveyor 710, and packaging bags can be placed on the bag-placement plate 730 for use during packaging. The conveying mechanism 740 includes a third mounting frame 741 and a conveying suction cup 742. The third mounting frame 741 is fixedly mounted on the packaging table 700, and the conveying suction cup 742 is movably connected to the third mounting frame 741. The conveying suction cup 742 can move up and down and in the width direction of the conveyor belt 220. During the packaging process, the conveying suction cup 742 moves to the corresponding position on the bag-placement plate 730, then moves the vacuum adsorption packaging bag downwards, and then conveys the packaging bag to the vacuum adsorption belt conveyor 710.

[0070] Conventional film packaging bags have a sealing film at the bag opening, with adhesive on the film. After packaging, the sealing film is adhered to the other side of the bag opening, thus sealing the bag. In the bagging machine of this embodiment, the sealing is not done by machine but is completed manually at the later stage.

[0071] During the packaging process, to prevent the sealing film of the packaging bag from affecting the packaging, a bag-straightening mechanism 800 is fixedly connected to the side of the gantry frame 110 away from the first belt conveyor mechanism 200. Below the bag-straightening mechanism 800 is the gap between the workbench 100 and the packaging table 700. The bag-straightening mechanism 800 straightens the sealing film of the bag opening to avoid affecting the packaging. Specifically, the bag-straightening mechanism 800 includes a third drive device 810 and a bag-straightening strip 820. The third drive device 810 is preferably a cylinder, and the bag-straightening strip 820 is installed on the third drive device 810. The bag-straightening strip 820 moves up and down under the action of the third drive device 810. After the packaging bag is placed on the vacuum adsorption belt conveyor 710, the conveyor moves the packaging bag to the side of the workbench to the packaging position, and then the conveyor adsorbs the bottom surface of the packaging bag. When the packaging bag is in the packaging position, its sealing film extends out of the vacuum adsorption belt conveyor 710. At this time, the third drive device 810 drives the bag straightener 820 to move downward. The bag straightener 820 pushes the sealing film of the packaging bag downward to the gap between the worktable 100 and the packaging table 700 to avoid affecting the packaging.

[0072] In Embodiment 1, after the side U-shaped strip 410 supports the packaging bag via the bag support part 411, the packaging bag is pressed onto the side U-shaped strip 410 by the rotary pressing cylinder 430 and the bag pressing component 431. In practice, the bag straightening strip 820 can also be driven downward by the third driving device 810 until it contacts the top surface of the side U-shaped strip 410, without the rotary pressing cylinder 430 and the bag pressing component 431, resulting in a simpler structure.

[0073] In this embodiment, a fixing mechanism 900 is provided at the bottom of the packaging platform 700. The fixing mechanism 900 includes a fourth driving device 910 and a plate-shaped fixing member 920. The fourth driving device 910 is preferably a cylinder, which is fixed to the bottom of the packaging platform 700 near the end of the worktable. The bottom of the fixing member 920 is fixedly connected to the output end of the fourth driving device 910. Under normal conditions, the fourth driving device 910 drives the fixing member 920 to move towards the worktable 100, so that the bag-strapping strip 820 can push the sealing film of the packaging bag to the position between the fourth driving device 910 and the fixing member 920. Then, the bag-strapping strip 820 moves upward to the initial position. Next, the fourth driving device 910 drives the fixing member 920 to move towards the packaging platform 700, pressing the sealing film of the packaging film against the end face of the packaging platform 700, preventing the sealing film from affecting the packaging and improving the packaging reliability. After packaging is completed, the fourth drive device 910 drives the fixing part 920 to move to one side of the worktable 100, no longer pressing down on the sealing film of the packaging bag, and the vacuum adsorption belt conveyor 710 removes and unloads the packaged fabric.

[0074] The above description is only a preferred embodiment of the present utility model, and its structure is not limited to the shapes listed above. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A conveying mechanism for feeding fabric into packaging bags, characterized in that: Includes a workbench, belt conveyor mechanism, and pushing mechanism; The belt conveyor mechanism includes a frame and a conveyor belt, the frame is mounted on the workbench, and the belt is mounted on the frame; The push mechanism includes a mounting frame, a first driving device, a push assembly, and a second driving device. The mounting frame is slidably connected to the worktable. The first driving device drives the mounting frame to move synchronously and in the opposite direction along the conveyor belt. The push assembly includes a limiting plate and a push block fixedly connected to the bottom of the limiting plate. The limiting plate can move up and down relative to the mounting frame. The bottom surface of the limiting plate has a limiting surface on the side of the push block away from the mounting frame. The limiting surface is horizontally set. The side of the push block away from the mounting frame is a push surface. The bottom of the push block abuts against the conveyor belt. The second driving device is mounted on the mounting frame and drives the push assembly to move up and down.

2. The conveying mechanism for feeding fabric into a packaging bag according to claim 1, characterized in that: The pushing component also includes a connecting plate and a reinforcing rib. The connecting plate is slidably connected to the mounting frame. The first end of the reinforcing rib is fixedly connected to the connecting plate, and the second end of the reinforcing rib extends out along the conveying direction of the conveyor belt. The pushing block is located beside the second end of the reinforcing rib.

3. The conveying mechanism for feeding fabric into a packaging bag according to claim 2, characterized in that: The thickness of the second end of the reinforcing rib gradually decreases outwards.

4. The conveying mechanism for feeding fabric into a packaging bag according to claim 1, characterized in that: It also includes a bag-supporting mechanism located at the end of the conveyor belt, the bag-supporting mechanism comprising two sets of bag-supporting assemblies, the two sets of bag-supporting assemblies being respectively located on both sides of the width direction of the conveyor belt; The bag-supporting assembly includes a side U-shaped strip and a resetting component; one end of the side U-shaped strip is rotatably connected to the worktable, and the other end of the side U-shaped strip is the bag-supporting part, with the internal height of the side U-shaped strip not less than the height of the fabric to be packaged; one end of the resetting component is fixed, and the other end of the resetting component cooperates with the side U-shaped strip to pull the side U-shaped strip to a closed state, in which the U-shaped opening of the side U-shaped strip faces the conveyor belt; the side U-shaped strip is pushed to an open state by the fabric to be packaged, in which the U-shaped openings of the two sets of bag-supporting assemblies are arranged facing each other, and the distance between the bottom of the U-shape is adapted to the width of the fabric to be packaged.

5. The conveying mechanism for feeding fabric into a packaging bag according to claim 4, characterized in that: The belt conveyor mechanism also includes two support plates, both of which are arranged along the conveying direction of the conveyor belt and respectively located on both sides of the conveyor belt. The minimum distance between the two support plates is less than the width of the fabric to be packaged, and the maximum distance between the two support plates is greater than the width of the fabric to be packaged. The end of the support plate extends into the corresponding side U-shaped strip and engages with the side U-shaped strip in the closed state.

6. The conveying mechanism for feeding fabric into a packaging bag according to claim 4, characterized in that: The U-shaped strip on the side gradually enlarges at the port near the connecting shaft to form a flared section.

7. The conveying mechanism for feeding fabric into a packaging bag according to claim 4, characterized in that: Each of the side U-shaped strips is provided with a rotary pressing cylinder, and the output end of the rotary pressing cylinder is provided with a pressing bag component, the bottom of which abuts against the top surface of the side U-shaped strip.

8. An automatic bagging machine, comprising a conveying mechanism, a packaging table, and a bag opening and closing mechanism disposed on the packaging table, characterized in that: The conveying mechanism is the conveying mechanism for feeding fabric into a packaging bag as described in any one of claims 1-7; The end of the conveyor belt is located at the end of the workbench, and the conveying mechanism and the packaging table are arranged in sequence.

9. The automatic bagging machine according to claim 8, characterized in that: The workbench is equipped with a bag-strapping mechanism, which includes a third drive device and a bag-strapping strip. The bag-strapping strip is mounted on the third drive device and moves up and down under the action of the third drive device.

10. The automatic bagging machine according to claim 8, characterized in that: The bottom of the packaging platform is provided with a fixing mechanism, which includes a fourth driving device and a fixing component. The fourth driving device is fixed to the bottom of the packaging platform, and the fixing component is installed on the fourth driving device. Under the action of the fourth driving device, the fixing component can move to abut against the end face of the packaging platform near the conveying mechanism.

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