Bag supply device for correcting bag opening at ton bag taking position

Abstract

A bag supply device for correcting a bag opening at a bag taking position of a ton bag comprises a longitudinal translation mechanism, a transfer frame is arranged on the longitudinal translation mechanism, a transverse translation mechanism is arranged in the transfer frame, a transverse movement frame is arranged on the transverse translation mechanism, a bag taking mechanism is vertically arranged on the transverse movement frame, and a visual identification system is arranged at the rear end of the transfer frame. A swing mechanism is arranged below the rear portion of the longitudinal translation mechanism, a stacking tray conveyor is arranged at the upper end of the swing mechanism and can convey ton bag stacks to a bag taking position, and the visual recognition system recognizes and positions ton bags at the upper ends of the ton bag stacks and sends the ton bags to the control system. The control system controls the rotation mechanism, the longitudinal translation mechanism and the transverse translation mechanism to act according to the position deviation of the bag opening, the ton bag opening with the position deviation is adjusted to the target position, the bag supporting mechanism is arranged below the front portion of the longitudinal translation mechanism, and the bag opening mechanism is arranged on the front portion of the bag supporting mechanism. According to the bag opening device, the success rate of bag opening is guaranteed, the overall occupied space of the device is smaller, and more application scenes are achieved.

Description

Technical Field

[0001] This utility model relates to a bag feeding device for correcting the deviation of the bag opening at the bag feeding position of a ton bag, belonging to the field of packaging machinery. Background Technology

[0002] Patent document CN221757912U discloses a device for picking up and opening ton bags. This device has a multi-station ton bag stack storage position. The picking mechanism picks up the top surface of the folded ton bags and grasps both sides of the bag body, so that the ton bag as a whole is transferred to the opening and shaping mechanism. A machine vision system set above the opening position identifies and positions the feeding straight cylinder bag openings stacked on the ton bags below. The ton bags that meet the opening conditions are opened, and the ton bags that do not meet the opening conditions are rejected. Although this device can identify the state of the ton bags and reject the ton bags that do not meet the opening conditions, the ton bag stacks are stacked manually, and the stacking shape of the ton bags cannot be completely neat and regular. This increases the probability that subsequent ton bags will be rejected after being identified as not meeting the opening conditions, reduces the opening rate of the entire stack of ton bags, and affects the packaging efficiency.

[0003] Patent application 202422144703.3 discloses a ton bag mouth correction device. This device transfers the ton bag picked up by the bag-picking mechanism to a longitudinal translation mechanism. The longitudinal translation mechanism moves the ton bag forward so that the bag mouth reaches the recognition area of ​​the machine vision system. The deviation is calculated based on the position coordinates of the bag mouth recognition, and the moving distance of the longitudinal and lateral translation mechanisms and the rotation angle of the rotary mechanism are controlled to adjust the position of the ton bag mouth to the target range. Then, the longitudinal translation mechanism moves the ton bag forward to the opening position for opening. Although this device can solve the problem of a high proportion of ton bags that do not meet the opening conditions being rejected due to irregular stacking of ton bags by manual stacking, the longitudinal translation mechanism needs to meet the requirements of placing the bag after being picked up by the bag-picking mechanism and moving the ton bag forward to the recognition area and opening position, which makes the whole device occupy a large space and has limited applicable sites. Utility Model Content

[0004] To address the issues of large space occupation and poor applicability of existing ton bag feeding devices, this utility model provides a ton bag feeding device with a bag opening correction mechanism. It includes a longitudinal translation mechanism with a transfer frame, a transverse translation mechanism within the transfer frame, a transverse frame on the transverse translation mechanism, and a vertically arranged bag-picking mechanism on the transverse frame. A vision recognition system is located at the rear end of the transfer frame. A rotary mechanism is located below the rear of the longitudinal translation mechanism, and a pallet conveyor is located at the upper end of the rotary mechanism. The rotary mechanism drives the pallet conveyor to rotate horizontally, thus transporting the pallets. The machine can transport stacks of ton bags to the bag-picking position. The stack of ton bags is composed of multiple ton bags stacked together. The feed cylinder of each ton bag is folded at the top of the bag body. The feed cylinder is equipped with a bag opening positioning frame. The vision recognition system identifies and positions the bag opening positioning frame below and sends the information to the control system. The control system determines the positional deviation of the ton bag opening. The control system can control the rotation mechanism, longitudinal translation mechanism, lateral translation mechanism and bag picking mechanism to adjust the ton bag opening with positional deviation to the target position. The longitudinal translation mechanism is equipped with a bag-supporting mechanism at the lower front and a bag-opening mechanism at the front of the bag-supporting mechanism.

[0005] The bag-retrieving mechanism includes a bag-retrieving elevator connected to a transfer frame. A gripping mechanism is located at the lower end of the bag-retrieving elevator. The gripping mechanism includes a base frame. A vertically arranged bag-retrieving suction cup is located at the front of the base frame. Two sets of bag-clamping cylinders are symmetrically arranged on the left and right sides of the rear of the base frame. The cylinder rod of the bag-clamping cylinder is connected to the tail end of the bag-clamping swing arm. The rear part of the bag-clamping swing arm is hinged to the base frame. The bag-clamping cylinder drives the bag-clamping swing arm to swing up and down. When the bag-clamping swing arm swings to the lower position, its head is in contact with the lower end surface of the base frame. When the bag-clamping swing arm swings to the upper position, its lowest point is not lower than the lower bottom surface of the bag-retrieving suction cup. The bag-retrieving suction cup is connected to the cylinder rod of the lifting cylinder. The cylinder body of the lifting cylinder is connected to the base frame. The lifting cylinder drives the bag-retrieving suction cup to move vertically up and down.

[0006] The bag-picking suction cup descends vertically to pick up the bag opening of the ton bag from the feed cylinder, and the bag-clamping cylinder drives the bag-clamping swing arm to swing downwards to clamp the left and right sides of the bag opening of the feed cylinder.

[0007] The bag opening mechanism includes an upper bag opening mechanism connected to the front middle of the bag holding mechanism, and a lower bag opening mechanism is provided below the upper bag opening mechanism.

[0008] The bag-supporting mechanism includes a bag-supporting frame, with a bag-supporting plate bent downwards at the lower part of the bag-supporting frame. Two sets of bag-pressing swing arms are symmetrically arranged near the front bend of the bag-supporting plate. The lower part of the bag-pressing swing arms is hinged to the bag-supporting frame, and the lower end of the bag-pressing swing arms is connected to the cylinder rod of the bag-pressing cylinder. The cylinder body of the bag-pressing cylinder is hinged to the bag-supporting frame. The bag-pressing cylinder drives the bag-pressing swing arms to swing up and down. When the bag-pressing swing arms swing to the lower position, their upper part is in contact with the upper surface of the bag-supporting plate.

[0009] The upper bag opening mechanism includes an upper mounting base, the rear end of which is connected to the middle of the front end of the bag holding mechanism. The upper mounting base is equipped with a vertically arranged bag opening cylinder. The cylinder rod end of the bag opening cylinder is hinged to the rear of the upper connecting plate. The front part of the upper connecting plate is equipped with an upper bag opening suction cup. The front end of the upper connecting plate is hinged to the left and right sides of the flipping upper pressure plate. The flipping upper pressure plate is also connected to the cylinder rod of the upper pressure port cylinder. The cylinder body of the upper pressure port cylinder is hinged to the upper connecting plate. The upper pressure port cylinder drives the flipping upper pressure plate to flip up and down. When the flipping upper pressure plate is flipped to the upper position, its lowest point is not lower than the bottom surface of the upper bag opening suction cup. When the flipping upper pressure plate is flipped to the lower position, it is in contact with the lower end surface of the upper connecting plate.

[0010] The lower bag opening mechanism includes a lower mounting plate. The upper end of the lower mounting plate is connected to the bag holding mechanism. The lower middle part of the lower mounting plate is hinged to the cylinder body of the pressing cylinder. The cylinder rod of the lower pressing cylinder is hinged to the flipping lower pressing plate. The left and right sides of the flipping lower pressing plate are also hinged to the front end of the lower mounting plate. The lower pressing cylinder drives the flipping lower pressing plate to flip up and down. When the flipping lower pressing plate is flipped to the upper position, it is in contact with the upper surface of the lower mounting plate. When the flipping lower pressing plate is flipped to the lower position, its uppermost end is not higher than the upper surface of the horizontally placed ton bag on the bag holding mechanism. The front part of the lower mounting plate is provided with a lower bag opening suction cup.

[0011] The rear end of the longitudinal translation mechanism is equipped with a pallet lift, and the lower end of the rotary mechanism is connected to the lifting frame at the front of the pallet lift.

[0012] The beneficial effects of this utility model are:

[0013] A. A visual recognition system is used to identify and locate the ton bags below the bag-picking position. The control system adjusts the angle of the pallet conveyor at the bag-picking position and controls the bag-picking mechanism to move longitudinally and laterally. This achieves precise correction of the bag opening position and ensures that the bag-picking mechanism can smoothly grab the ton bags. It also ensures that the ton bags can meet the opening conditions when they are subsequently transferred to the front opening position. This not only guarantees the success rate of opening the bags, but also shortens the longitudinal stroke of the entire bag supply device and reduces the space occupied.

[0014] B. After the ton bag is moved to the bag support mechanism by the bag picking mechanism, it immediately returns to its original position to continue the identification, correction and gripping action of the ton bag at the next bag picking position. At the same time, the ton bag at the bag opening position is opened and subsequently bagged. After the ton bag is bagged, the ton bag at the bag picking position has completed the correction and gripping action, and the bag picking mechanism moves the ton bag to the bag support mechanism again. Through the close coordination of the cycle of each mechanism, the overall packaging efficiency is optimized.

[0015] C. The bag-picking suction cup can pick up the bag opening of the ton bag from the inlet cylinder, and the bag-clamping arm swings downward to hold the left and right sides of the inlet cylinder opening. During the process of the bag picking mechanism moving the ton bag to the front bag-supporting mechanism, only the inlet cylinder part of the ton bag is clamped, while the bag body is in a free state. The inlet cylinder part of the ton bag is moved and placed on the horizontal end face of the bag-supporting plate, and the free bag body naturally hangs down at the downward bend at the rear of the bag-supporting plate. That is, after the bag picking suction cup picks up the ton bag, it is not necessary to lift the ton bag until the entire bag body is detached from the ton bag stack below. The bag-clamping arm can also hold the ton bag smoothly, which reduces the lifting stroke and lowers the overall height of the device. The horizontal end face of the bag-supporting mechanism does not need to accommodate the entire ton bag, further shortening the longitudinal length of the mechanism, making the overall space occupied by the equipment smaller and the applicability better.

[0016] D. By using the flipping upper pressure plate set on the upper bag opening mechanism, the upper bag opening suction cup can lift the upper bag opening a short distance, and then the flipping upper pressure plate can flip down to press the upper bag opening. At this time, the upper bag opening suction cup can release the upper bag opening, avoiding the situation where the upper bag opening accidentally falls off during the upward lifting process of the upper bag opening suction cup, and further improving the reliability of the device.

[0017] E. By using the flipping pressure plate set on the lower opening mechanism, the success rate of opening the bag can be guaranteed when the ton bag is folded together and the feed cylinder is folded on top. On the other hand, it can prevent the vacuum of the lower opening suction cup from failing unexpectedly when the ton bag is in the folded state of the feed cylinder and the bag body, thus affecting the opening of the bag, thereby improving the reliability of the device.

[0018] F. Using a pallet lift can keep the top surface of the ton bag stack at the same height, which can further reduce the lifting stroke of the bag picking mechanism and improve the accuracy of the vision recognition system in identifying and locating ton bags as well as the working efficiency of the bag feeding device. Attached Figure Description

[0019] Figure 1 This is a three-dimensional isometric view of this utility model.

[0020] Figure 2 This is a schematic diagram of the longitudinal translation mechanism and the lateral translation mechanism.

[0021] Figure 3 This is a structural diagram of the pallet conveyor and rotary mechanism.

[0022] Figure 4 This is a schematic diagram of the bag-retrieving mechanism.

[0023] Figure 5 This is a schematic diagram of the gripping mechanism.

[0024] Figure 6This is a schematic diagram of the bag-carrying mechanism.

[0025] Figure 7 This is a schematic diagram of the bottom opening mechanism.

[0026] Figure 8 This is a schematic diagram of the upper bag opening mechanism.

[0027] Figure 9 This is a schematic diagram illustrating the status of a visual recognition system identifying and locating a ton bag.

[0028] Figure 10 This is a schematic diagram showing the bag-grabbing mechanism gripping a ton bag.

[0029] Figure 11 This is a schematic diagram showing the status of transferring the ton bag to the opening position. Detailed Implementation

[0030] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the embodiments of this utility model are described in detail below with reference to the accompanying drawings. The embodiments are exemplary and intended to explain this utility model, but should not be construed as limiting this utility model.

[0031] See Figures 1 to 8 A bag feeding device for correcting the bag opening at the bag retrieval position of ton bags includes a longitudinal translation mechanism 1, a transfer frame 11 mounted on the longitudinal translation mechanism 1, a transverse translation mechanism 2 within the transfer frame 11, a transverse frame 21 mounted on the transverse translation mechanism 2, and a vertically arranged bag retrieval mechanism 3 mounted on the transverse frame 21. A vision recognition system 4 is located at the rear end of the transfer frame 1. A rotary mechanism 6A is located below the rear of the longitudinal translation mechanism 1, and a pallet conveyor 6 is located at the upper end of the rotary mechanism 6A. The rotary mechanism 6A drives the pallet conveyor 6 to rotate horizontally, and the pallet conveyor 6 can transport a stack of ton bags to the bag retrieval position. The ton bag stack is composed of multiple ton bags A stacked together. The feeding cylinder B of each ton bag A is folded at the top of the bag body. The feeding cylinder B is equipped with a bag opening positioning frame C. The vision recognition system 4 identifies and positions the bag opening positioning frame C below and sends the information to the control system. The control system determines the positional deviation of the bag opening of the ton bag A. The control system can control the rotation mechanism 6A, the longitudinal translation mechanism 1, the lateral translation mechanism 2, and the bag picking mechanism 3 to adjust the bag opening of the ton bag A with positional deviation to the target position. The longitudinal translation mechanism 1 is equipped with a bag holding mechanism 7 at the lower front, and the bag holding mechanism 7 is equipped with a bag opening mechanism at the front.

[0032] Preferably, the longitudinal translation mechanism 1 further includes longitudinal synchronous belt conveyors 12 arranged on the left and right sides, the left and right ends of the transfer frame 11 are connected to the synchronous belt of the longitudinal synchronous belt conveyor 12, and the left and right ends of the transfer frame 11 are also provided with rollers, and the longitudinal synchronous belt is driven by a motor to realize the rolling of the transfer frame 11 on the longitudinal guide rail; the transverse translation mechanism 2 further includes transverse synchronous belt conveyors 22 arranged on the front and rear sides of the transfer frame 11, the front and rear sides of the transverse frame 21 are connected to the synchronous belt of the transverse synchronous belt conveyor 22, and the front and rear sides of the transverse frame 21 are also provided with rollers, and the transverse synchronous belt is driven by a motor to realize the rolling of the transverse frame 21 on the transverse guide rail.

[0033] Furthermore, the bag-retrieving mechanism 3 includes a bag-retrieving elevator 31, which is connected to the transfer frame 11. A gripping mechanism 32 is provided at the lower end of the bag-retrieving elevator 31. The gripping mechanism 32 includes a base frame 321. A vertically arranged bag-retrieving suction cup 324 is provided at the front of the base frame 321. Two sets of bag-clamping cylinders 322 are symmetrically arranged on the left and right sides of the rear of the base frame 321. The cylinder rod end of the bag-clamping cylinder 322 is connected to the tail end of the bag-clamping swing arm 323. The bag-clamping swing arm 323... The rear part is hinged to the base frame 321. The bag clamping cylinder 322 drives the bag clamping swing arm 323 to swing up and down. When the bag clamping swing arm 323 swings to the lower position, its head is in contact with the lower end surface of the base frame 321. When the bag clamping swing arm 323 swings to the upper position, its lowest point is not lower than the bottom surface of the bag retrieval suction cup 324. The bag retrieval suction cup 324 is connected to the cylinder rod of the lifting cylinder 325. The cylinder body of the lifting cylinder 325 is connected to the base frame 321. The lifting cylinder 325 drives the bag retrieval suction cup 324 to lift vertically.

[0034] Preferably, the bag-picking suction cup 324 descends vertically to pick up the bag opening of the feed cylinder B of the ton bag A, and the bag-clamping cylinder 322 can drive the bag-clamping swing arm 323 to swing downward to clamp the left and right sides of the bag opening of the feed cylinder B; the bag-picking suction cup 324 can lift the bag opening of the feed cylinder B upward by the lifting cylinder 325 driving the bag-picking suction cup 324 vertically upward to lift the bag opening, or by the bag-picking elevator 31 vertically upward to lift the bag opening.

[0035] Preferably, the bag-supporting mechanism 7 includes a bag-supporting frame 71, with a bag-supporting plate 74 bent downwards at the lower part of the bag-supporting frame 71. Two sets of bag-pressing swing arms 72 are symmetrically arranged near the front bend of the bag-supporting plate 74. The lower part of the bag-pressing swing arm 72 is hinged to the bag-supporting frame 71, and the lower end of the bag-pressing swing arm 72 is connected to the cylinder rod of the bag-pressing cylinder 73. The cylinder body of the bag-pressing cylinder 73 is hinged to the bag-supporting frame 71. The bag-pressing cylinder 73 drives the bag-pressing swing arm 72 to swing up and down. When the bag-pressing swing arm 72 swings to the lower position, its upper part is in contact with the upper surface of the bag-supporting plate 74.

[0036] Furthermore, the bag opening mechanism includes an upper bag opening mechanism 8, which is connected to the front middle of the bag holding mechanism 7, and a lower bag opening mechanism 9 is provided below the upper bag opening mechanism 8.

[0037] Preferably, the upper bag opening mechanism 8 includes an upper mounting base 81, the rear end of which is connected to the middle of the front end of the bag holding mechanism 7. The upper mounting base 81 is provided with a vertically arranged bag opening cylinder 83. The cylinder rod end of the bag opening cylinder 83 is hinged to the rear of the upper connecting plate 82. The front of the upper connecting plate 82 is provided with an upper bag opening suction cup 84. The front end of the upper connecting plate 82 is hinged to the left and right sides of the flipping upper pressure plate 85. The flipping upper pressure plate 85 is also connected to the cylinder rod of the upper pressure port cylinder 86. The cylinder body of the upper pressure port cylinder 86 is hinged to the upper connecting plate 82. The upper pressure port cylinder 86 drives the flipping upper pressure plate 85 to flip up and down. When the flipping upper pressure plate 85 is flipped to the upper position, its lowest point is not lower than the bottom surface of the upper bag opening suction cup 84. When the flipping upper pressure plate 85 is flipped to the lower position, it is in contact with the lower end surface of the upper connecting plate 82.

[0038] Preferably, the lower bag opening mechanism 9 includes a lower mounting plate 91, the upper end of which is connected to the bag holding mechanism 7. The lower middle part of the lower mounting plate 91 is hinged to the cylinder body of the pressing cylinder 93. The cylinder rod of the lower pressing cylinder 93 is hinged to the flipping lower pressing plate 94. The left and right sides of the flipping lower pressing plate 94 are also hinged to the front end of the lower mounting plate 91. The lower pressing cylinder 93 drives the flipping lower pressing plate 94 to flip up and down. When the flipping lower pressing plate 94 is flipped to the upper position, it is in contact with the upper end surface of the lower mounting plate 91. When the flipping lower pressing plate 94 is flipped to the lower position, its uppermost end is not higher than the upper end surface of the horizontally placed ton bag A on the bag holding mechanism 7. The front part of the lower mounting plate 91 is provided with a lower bag opening suction cup 92.

[0039] Preferably, the rear end of the longitudinal translation mechanism 1 is provided with a pallet elevator 5, and the lower end of the rotary mechanism 6A is connected to the lifting frame at the front of the pallet elevator 5.

[0040] See Figures 1 to 11 The working principle of this utility model embodiment is explained as follows:

[0041] Ton bags A are stacked on pallets and transported by an external conveyor to pallet conveyor 6, which then transports the stacked ton bags to the bag retrieval position.

[0042] The longitudinal translation mechanism 1 drives the vision recognition system 4 to move, so that the camera in the vision recognition system 4 reaches directly above the recognition area, and obtains an image of the bag opening positioning frame C below and sends it to the control system. The control system identifies and confirms the position coordinates of the bag opening positioning frame C. After calculating the deviation based on the position coordinate data and the set target range, it controls the rotation mechanism 6A to drive the pallet conveyor 6 and the ton bag stack to rotate at an angle. Based on the adjusted image of the bag opening positioning frame C, it controls the longitudinal translation mechanism 1 and the transverse translation mechanism 2 to move, so that the gripping mechanism 32 reaches directly above the gripping position of the feed cylinder B of the ton bag A.

[0043] The bag-picking elevator 31 descends vertically, causing the bag-picking suction cup 324 to pick up the bag opening of the feed cylinder B. The lifting cylinder 325 drives the bag-picking suction cup 324 to rise vertically, causing the bag opening to lift upwards. The bag-clamping cylinder 322 drives the bag-clamping swing arm 323 to swing downwards, clamping the left and right sides of the bag opening of the feed cylinder B to complete the grabbing of the ton bag A.

[0044] The longitudinal translation mechanism 1 drives the ton bag A to move forward and the bag lifting machine 31 to descend vertically, so that the feeding cylinder B falls onto the horizontal end face of the bag support plate 74 and the bag opening is located at the lower opening mechanism 9. The bag body of the ton bag A hangs down naturally at the lower bend of the rear part of the bag support plate 74. The bag pressing cylinder 73 drives the bag pressing swing arm 72 to swing downward and press on the feeding cylinder B.

[0045] The bag-retrieving suction cup 324 releases the bag opening, the bag-clamping cylinder 322 drives the bag-clamping swing arm 323 to swing upwards back to the initial position, the longitudinal translation mechanism 1 drives the bag-retrieving mechanism 3 and the vision recognition system 4 back to the initial position, the pallet elevator 5 rises vertically to lift the ton bag stack to a suitable position, and continues to identify and position the next bag-retrieving position ton bag A. At the same time, for ton bag A in the bag-opening position, the lower bag-opening suction cup 92 picks up the lower bag opening, the bag-opening cylinder 83 drives the upper bag-opening suction cup 84 to descend vertically to pick up the upper bag opening and return to the initial position. The bag opening is initiated by the lower pressure cylinder 93, which drives the lower pressure plate 94 to flip upward and press it against the lower bag opening, releasing the lower bag opening suction cup 92. The upper pressure cylinder 86 drives the upper pressure plate 85 to flip downward and press it against the upper bag opening, releasing the upper bag opening suction cup 84, thus completing the bag opening action. The next step of bagging is then carried out. At the same time as bagging is completed, the ton bag A at the bag picking position has completed the correction and gripping action, and the bag picking mechanism 3 once again moves the ton bag A to the bag holding mechanism 7 to continue the bag opening action.

Claims

1. A bag feeding device for correcting the deviation of the bag opening when picking up a ton bag, comprising a longitudinal translation mechanism (1), characterized in that: The longitudinal translation mechanism (1) is equipped with a transfer frame (11), and a transverse translation mechanism (2) is provided inside the transfer frame (11). A transverse frame (21) is provided on the transverse translation mechanism (2), and a vertically arranged bag-picking mechanism (3) is provided on the transverse frame (21). A visual recognition system (4) is provided at the rear end of the transfer frame (11). A rotary mechanism (6A) is provided below the rear of the longitudinal translation mechanism (1). A pallet conveyor (6) is provided at the upper end of the rotary mechanism (6A). The rotary mechanism (6A) drives the pallet conveyor (6) to rotate in the horizontal plane. The pallet conveyor (6) can transport the ton bag stack to the bag-picking position. The ton bag stack consists of multiple ton bags (A) stacked together. In this configuration, the feed cylinder (B) of each ton bag (A) is folded at the top of the bag body. The feed cylinder (B) is equipped with a bag opening positioning frame (C). The visual recognition system (4) identifies and positions the bag opening positioning frame (C) below and sends the information to the control system. The control system determines the positional deviation of the bag opening of the ton bag (A). The control system can control the rotation mechanism (6A), the longitudinal translation mechanism (1), the lateral translation mechanism (2), and the bag picking mechanism (3) according to the positional deviation of the bag opening to adjust the bag opening of the ton bag (A) with positional deviation to the target position. The longitudinal translation mechanism (1) is equipped with a bag holding mechanism (7) at the lower front part, and the bag holding mechanism (7) is equipped with a bag opening mechanism at the front part.

2. The bag feeding device for correcting the misalignment of the bag opening when taking out a ton bag according to claim 1, characterized in that: The bag-retrieving mechanism (3) includes a bag-retrieving elevator (31), which is connected to the transfer frame (11). A gripping mechanism (32) is provided at the lower end of the bag-retrieving elevator (31). The gripping mechanism (32) includes a base frame (321). A vertically arranged bag-retrieving suction cup (324) is provided at the front of the base frame (321). Two sets of bag-clamping cylinders (322) are symmetrically arranged on the left and right sides of the rear of the base frame (321). The cylinder rod end of the bag-clamping cylinder (322) is connected to the tail end of the bag-clamping swing arm (323). The rear of the bag-clamping swing arm (323)... The part is hinged to the base frame (321). The bag clamping cylinder (322) drives the bag clamping swing arm (323) to swing up and down. When the bag clamping swing arm (323) swings to the lower position, its head is in contact with the lower end face of the base frame (321). When the bag clamping swing arm (323) swings to the upper position, its lowest end is not lower than the bottom surface of the bag retrieval suction cup (324). The bag retrieval suction cup (324) is connected to the cylinder rod of the lifting cylinder (325). The cylinder body of the lifting cylinder (325) is connected to the base frame (321). The lifting cylinder (325) drives the bag retrieval suction cup (324) to lift vertically.

3. The bag feeding device for correcting the misalignment of the bag opening when taking out a ton bag according to claim 2, characterized in that: The bag-picking suction cup (324) descends vertically to pick up the bag opening of the feed cylinder (B) of the ton bag (A), and the bag-clamping cylinder (322) drives the bag-clamping swing arm (323) to swing downward to clamp the left and right sides of the bag opening of the feed cylinder (B).

4. The bag feeding device for correcting the deviation of the bag opening when taking out a ton bag according to claim 1, characterized in that: The bag opening mechanism includes an upper bag opening mechanism (8), which is connected to the middle of the front end of the bag holding mechanism (7), and a lower bag opening mechanism (9) is provided below the upper bag opening mechanism (8).

5. A bag feeding device for correcting the misalignment of a ton bag dispensing position according to any one of claims 1-4, characterized in that: The bag holding mechanism (7) includes a bag holding frame (71). The lower part of the bag holding frame (71) is provided with a bag holding plate (74) that bends downward at the rear. Near the front bend of the bag holding plate (74), two sets of bag pressing swing arms (72) are symmetrically arranged on the left and right. The lower part of the bag pressing swing arm (72) is hinged to the bag holding frame (71). The lower end of the bag pressing swing arm (72) is connected to the cylinder rod of the bag pressing cylinder (73). The cylinder body of the bag pressing cylinder (73) is hinged to the bag holding frame (71). The bag pressing cylinder (73) drives the bag pressing swing arm (72) to swing up and down. When the bag pressing swing arm (72) swings to the lower position, its upper part is in contact with the upper end surface of the bag holding plate (74).

6. The bag feeding device for correcting the misalignment of the bag opening when taking out a ton bag according to claim 4, characterized in that: The upper bag opening mechanism (8) includes an upper mounting base (81), the rear end of which is connected to the middle of the front end of the bag holding mechanism (7). A vertically arranged bag opening cylinder (83) is provided on the upper mounting base (81). The cylinder rod end of the bag opening cylinder (83) is hinged to the rear of the upper connecting plate (82). An upper bag opening suction cup (84) is provided at the front of the upper connecting plate (82). The front end of the upper connecting plate (82) is connected to the left and right sides of the flipping upper pressure plate (85). The side-hinged upper pressure plate (85) is also connected to the cylinder rod of the upper pressure port cylinder (86). The cylinder body of the upper pressure port cylinder (86) is hinged to the upper connecting plate (82). The upper pressure port cylinder (86) drives the upper pressure plate (85) to flip up and down. When the upper pressure plate (85) is flipped to the upper position, its lowest end is not lower than the bottom surface of the upper bag suction cup (84). When the upper pressure plate (85) is flipped to the lower position, it is in contact with the lower end surface of the upper connecting plate (82).

7. The bag feeding device for correcting the misalignment of the bag opening when taking out a ton bag according to claim 4, characterized in that: The lower opening bag mechanism (9) includes a lower mounting plate (91). The upper end of the lower mounting plate (91) is connected to the bag support mechanism (7). The lower middle part of the lower mounting plate (91) is hinged to the cylinder body of the pressing cylinder (93). The cylinder rod of the lower pressing cylinder (93) is hinged to the flipping lower pressing plate (94). The left and right sides of the flipping lower pressing plate (94) are also hinged to the front end of the lower mounting plate (91). The lower pressing cylinder (93) drives the flipping lower pressing plate (94) to flip up and down. When the flipping lower pressing plate (94) is flipped to the upper position, it is in contact with the upper end surface of the lower mounting plate (91). When the flipping lower pressing plate (94) is flipped to the lower position, its uppermost end is not higher than the upper end surface of the horizontally placed ton bag (A) on the bag support mechanism (7). The front part of the lower mounting plate (91) is provided with a lower opening bag suction cup (92).

8. The bag feeding device for correcting the misalignment of the bag opening when taking out a ton bag according to claim 1, characterized in that: The rear end of the longitudinal translation mechanism (1) is provided with a pallet elevator (5), and the lower end of the rotary mechanism (6A) is connected to the lifting frame at the front of the pallet elevator (5).

Images