Ton bag taking and opening device

Abstract

A ton bag taking and opening device comprises a ton bag conveyor, two holding and shaping mechanisms are symmetrically arranged at the left end and the right end of a bag taking station on the front portion of the ton bag conveyor, a lifting suction cup bag taking mechanism is arranged above the bag taking station, and the upper end of the suction cup bag taking mechanism is connected to a horizontal transferring mechanism capable of moving front and back. A ton bag shaping mechanism is arranged in front of the ton bag conveyor, a bag opening pressing mechanism is arranged at the front end of the ton bag shaping mechanism, a liftable upper bag opening suction cup set is arranged above the front end of the ton bag shaping mechanism, the upper end of the upper bag opening suction cup set is connected to the middle of the front end of the supporting frame, and a machine vision system for positioning a bag opening is further arranged in the middle of the front end of the supporting frame. According to the ton bag taking and opening device, automatic ton bag taking and opening of a ton bag with a feeding straight barrel folded on the upper end face of an empty bag can be achieved.

Description

Technical Field

[0001] The present invention relates to a device for taking and opening a ton bag, belonging to the field of packaging machinery. Background Art

[0002] Patent document CN219904920U discloses a bag-taking and opening device, which is applicable to a ton bag whose bag mouth extends out of the front end of the frame before opening and whose lower bag mouth can be sucked by a vacuum chuck at the front end of the frame during opening; in actual production, another widely used ton bag A as shown in Figure 3 is also used. The ton bag A is folded into a square, and the feeding straight tube B of the ton bag A is folded on the upper end face of the empty bag. At the same time, the length of the feeding straight tube B does not exceed the outer edge of the ton bag A. A bag mouth positioning color block C is also provided on the upper bag mouth of the feeding straight tube B. The lower bag mouth of this kind of ton bag A cannot be directly sucked by the vacuum chuck during opening, so the prior art cannot complete the opening. Summary of the Invention

[0003] In order to realize the automatic bag-taking and opening of the ton bag A with the feeding straight tube B folded on the upper end face of the empty bag, the present invention provides a device for taking and opening a ton bag, which includes a ton bag conveyor 1. The ton bag conveyor 1 is provided with a multi-station ton bag stack storage position. Two groups of clamping and shaping mechanisms 2 are symmetrically arranged at the left and right ends at the bag-taking station in the front part of the ton bag conveyor 1. A liftable sucker bag-taking mechanism 8 is arranged above the bag-taking station. The upper end of the sucker bag-taking mechanism 8 is connected to a horizontally moving mechanism 7 that can move back and forth. The horizontally moving mechanism 7 is connected to the upper end of a support frame 9 through a guide rail and slider mechanism. A ton bag shaping mechanism 3 is arranged in front of the ton bag conveyor 1. An opening and pressing mechanism 4 is arranged at the front end of the ton bag shaping mechanism 3. A liftable upper opening sucker group 5 is arranged above the front end of the ton bag shaping mechanism 3. The upper end of the upper opening sucker group 5 is connected to the middle part of the front end of the support frame 9. A machine vision system 6 for positioning the bag mouth is also arranged at the middle part of the front end of the support frame 9. The machine vision system 6 identifies and positions the bag mouth positioning color block C on the ton bag A to determine whether the bag mouth of the ton bag A meets the opening condition, and the machine vision system 6 controls the ton bag shaping mechanism 3 to remove the ton bag A that does not meet the opening condition from the production line.

[0004] The ton bag shaping mechanism 3 includes a shaping pallet 31. Above the left front of the shaping pallet 31, there is a left shaping plate 32. The lower end surface of the left shaping plate 32 is close to the upper surface of the shaping pallet 31. The left shaping plate 32 is driven by a left shaping cylinder 33 to achieve horizontal left and right movement with multi-point positioning. The left shaping cylinder 33 is connected to the shaping machine frame 34. In the long notch on the right front of the shaping pallet 31, there is a right shaping swing rod 36. The right shaping swing rod 36 is driven by a right swing cylinder 35 to achieve up and down swinging. When the right shaping swing rod 36 swings to the lower position, its uppermost end is lower than the upper surface of the shaping pallet 31. The right swing cylinder 35 is connected to the shaping machine frame 34. In the long notch at the rear of the shaping pallet 31, there is a bag pushing plate 37. The bag pushing plate 37 is driven by a bag pushing cylinder 38 to achieve horizontal front and back movement. The bag pushing cylinder 38 is connected to the shaping machine frame 34.

[0005] The bag opening and pressing mechanism 4 includes a pressing claw 44. The pressing claw 44 is driven by a pressing opening lifting cylinder 42 to achieve vertical lifting and lowering actions. One end of the pressing opening lifting cylinder 42 is connected to a turning frame 43. The other end of the turning frame 43 is hinged to the lever of a pressing claw turning cylinder 41. The rod body of the pressing claw turning cylinder 41 is hinged to the lower part of the front end of the shaping machine frame 34. The turning frame 43 is hinged to the middle part of the front end of the shaping machine frame 34. The pressing claw turning cylinder 41 drives the pressing opening lifting cylinder 42 and the pressing claw 44 to achieve up and down turning actions. When the pressing opening lifting cylinder 42 and the pressing claw 44 turn to the lower position, their uppermost ends are lower than the upper surface of the shaping pallet 31.

[0006] The working principle of the present invention is: A. The ton bags A with the bag mouths facing forward are stacked and placed at the storage station behind the ton bag conveyor 1. The ton bag conveyor 1 conveys the ton bags A forward to the bag taking station. The clamping and shaping mechanisms 2 at the left and right ends clamp, sort and straighten the ton bags A placed at the bag taking station. B. The sucker bag taking mechanism 8 descends vertically so that the sucker group sucks the upper end surface of the ton bag A. The sucker bag taking mechanism 8 rises vertically back to the initial position. The horizontal transfer mechanism 7 drives the sucker bag taking mechanism 8 that has sucked the ton bag A to move horizontally forward to directly above the ton bag shaping mechanism 3. The right swing cylinder 35 drives the right shaping swing rod 36 to swing downward. The sucker bag taking mechanism 8 moves downward. The sucker group of the sucker bag taking mechanism 8 releases the ton bag A, making the ton bag A fall on the shaping pallet 31 and the upper end of the left shaping plate 32. C. The pressing opening lifting cylinder 42 drives the pressing claw 44 to rise vertically. The bag pushing cylinder 38 drives the bag pushing plate 37 to move horizontally forward so that the bag mouth of the ton bag A moves to the front end of the shaping pallet 31. The right swing cylinder 35 drives the right shaping swing rod 36 to swing upward to push the ton bag A to the left and straighten it. The left shaping cylinder 33 drives the left shaping plate 32 to move horizontally to the right so that the straightened ton bag A moves to the middle position of the shaping pallet 31. The right swing cylinder 35 drives the right shaping swing rod 36 to swing downward back to the initial position. D. The machine vision system 6 identifies and locates the positioning color block C at the bag mouth of the lower-ton bag A. If the position of the bag mouth exceeds the set range, it is determined that the bag mouth deflection is too large to open the bag. The left shaping cylinder 33 drives the left shaping plate 32 to drive the ton bag A to move horizontally to the right, so that the ton bag A is pushed out of the shaping support plate 31. If the position of the bag mouth is within the set range, the next bag-opening operation is performed; E. The crimping lifting cylinder 42 drives the crimping claws 44 to move vertically downward, so that the crimping claws 44 press on the feeding straight cylinder B of the ton bag A. The upper bag-opening suction cup group 5 descends vertically to suck the upper bag mouth, and then the upper bag-opening suction cup group 5 rises vertically back to the initial position to pull out the upper bag mouth from under the crimping claws 44. The crimping claws 44 continue to press on the lower bag mouth, thereby opening the bag mouth; If the bag-opening fails multiple times, the left shaping cylinder 33 will drive the left shaping plate 32 to drive the ton bag A to move horizontally to the right, and push the ton bag A out of the shaping support plate 31; F. After the bag opening is completed, the crimping claw flipping cylinder 41 drives the crimping lifting cylinder 42 and the crimping claws 44 to flip downward to prepare for the subsequent bag-supporting and bag-loading operations.

[0007] The beneficial effects of the present invention are: 1. The liftable suction cup bag-taking mechanism 8 is used to suck the ton bag A, the horizontally movable horizontal transfer mechanism 7 is used to transfer the ton bag A to the shaping support plate 31, and the combined action of the bag-opening crimping mechanism 4 and the upper bag-opening suction cup group 5 is used to complete the bag opening, realizing the automatic bag-taking and bag-opening of the ton bag A with the feeding straight cylinder B folded on the upper end face of the empty bag.

[0008] 2. The ton bag shaping mechanism 3 is used to straighten the ton bag A, and the machine vision system 6 is used to identify and locate the ton bag A, controlling the ton bag shaping mechanism 3 to remove the ton bag A that does not meet the bag-opening conditions from the production line, improving the success rate of bag opening and the reliability of the equipment.

[0009] 3. The ton bag conveyor 1 is provided with a multi-station ton bag stack storage position, which can store a large number of ton bags, reducing the manual participation in the production process, improving safety, and enhancing production efficiency.

[0010] 4. The clamping and shaping mechanism 2 provided at the bag-taking station of the ton bag conveyor 1 can prevent the lower empty bag from being misaligned when sucking the ton bag A, thereby improving the reliability of the bag-taking operation. Description of the Drawings

[0011] Figure 1 is the three-dimensional axonometric view of the present invention.

[0012] Figure 2 is the front view of the present invention.

[0013] Figure 3 is the structural schematic diagram of the ton bag A.

[0014] Figure 4 It is a schematic structural diagram of the bulk bag shaping mechanism 3 and the bag mouth pressing mechanism 4.

[0015] Figure 5 It is a schematic structural diagram of another angle of the bulk bag shaping mechanism 3.

[0016] Figure 6 It is a schematic diagram of the state where the bulk bag A is about to be opened.

[0017] Figure 7 It is a schematic diagram of the state where the bulk bag A is opened. Embodiment

[0018] For the specific embodiments of the present invention, refer to Figures 1 to 7 , a device for taking and opening a bulk bag, which includes a bulk bag conveyor 1. The bulk bag conveyor 1 is provided with a multi-station bulk bag stack storage position. At the left and right ends of the bag-taking station at the front of the bulk bag conveyor 1, two groups of clamping and shaping mechanisms 2 are symmetrically arranged. Above the bag-taking station, there is a liftable sucker bag-taking mechanism 8. The upper end of the sucker bag-taking mechanism 8 is connected to a horizontally movable horizontal transfer mechanism 7. The horizontal transfer mechanism 7 is connected to the upper end of the support frame 9 through a guide rail slider mechanism. In front of the bulk bag conveyor 1, there is a bulk bag shaping mechanism 3. At the front end of the bulk bag shaping mechanism 3, there is a bag-opening and pressing mechanism 4. Above the front end of the bulk bag shaping mechanism 3, there is a liftable upper bag-opening sucker group 5. The upper end of the upper bag-opening sucker group 5 is connected to the middle part of the front end of the support frame 9. In the middle part of the front end of the support frame 9, there is also a machine vision system 6 for positioning the bag mouth. The machine vision system 6 identifies and positions the bag mouth positioning color block C on the bulk bag A to determine whether the bag mouth of the bulk bag A meets the bag-opening condition. The machine vision system 6 controls the bulk bag shaping mechanism 3 to reject the bulk bag A that does not meet the bag-opening condition from the production line.

[0019] The bulk bag shaping mechanism 3 includes a shaping support plate 31. Above the left side of the front part of the shaping support plate 31, there is a left shaping plate 32. The lower end surface of the left shaping plate 32 is close to the upper surface of the shaping support plate 31. The left shaping plate 32 is driven by a left shaping cylinder 33 to achieve horizontal left and right movement with multi-point positioning. The left shaping cylinder 33 is connected to the shaping machine frame 34. In the long notch on the right side of the front part of the shaping support plate 31, there is a right shaping swing rod 36. The right shaping swing rod 36 is driven by a right swing cylinder 35 to achieve up and down swing. When the right shaping swing rod 36 swings to the lower position, its uppermost end is lower than the upper surface of the shaping support plate 31. The right swing cylinder 35 is connected to the shaping machine frame 34. In the long notch at the rear part of the shaping support plate 31, there is a bag pushing plate 37. The bag pushing plate 37 is driven by a bag pushing cylinder 38 to achieve horizontal front and back movement. The bag pushing cylinder 38 is connected to the shaping machine frame 34.

[0020] The bag-opening and mouth-pressing mechanism 4 includes a pressing claw 44. The pressing claw 44 is driven by a mouth-pressing lifting cylinder 42 to achieve vertical lifting motion. The mouth-pressing lifting cylinder 42 is connected to one end of a turning frame 43. The other end of the turning frame 43 is hinged to the lever of a pressing-claw turning cylinder 41. The lever body of the pressing-claw turning cylinder 41 is hinged to the lower part of the front end of the shaping machine frame 34. The turning frame 43 is hinged to the middle part of the front end of the shaping machine frame 34. The pressing-claw turning cylinder 41 drives the mouth-pressing lifting cylinder 42 and the pressing claw 44 to achieve up-and-down turning motion. When the mouth-pressing lifting cylinder 42 and the pressing claw 44 are turned to the lower position, the uppermost end thereof is lower than the upper surface of the shaping support plate 31.

Claims

1. A device for removing and opening ton bags, comprising a ton bag conveyor (1), characterized in that: Two groups of clamping and shaping mechanisms (2) are symmetrically arranged at the left and right ends of the bag taking station at the front of the ton bag conveyor (1). A liftable suction cup bag taking mechanism (8) is arranged above the bag taking station. The upper end of the suction cup bag taking mechanism (8) is connected to a horizontal transfer mechanism (7) that can move forward and backward. The horizontal transfer mechanism (7) is connected to the upper end of a support frame (9) through a guide rail slider mechanism. A ton bag shaping mechanism (3) is arranged in front of the ton bag conveyor (1). A bag opening and pressing mechanism (4) is arranged at the front end of the ton bag shaping mechanism (3). A liftable upper bag opening suction cup group (5) is arranged above the front end of the ton bag shaping mechanism (3). When opening the bag, the upper bag opening suction cup group (5) extracts the upper bag opening from the bag opening and pressing mechanism (4) while the bag opening and pressing mechanism (4) continues to press the lower bag opening. The upper end of the upper bag opening suction cup group (5) is connected to the middle of the front end of the support frame (9).

2. The device for removing and opening ton bags according to claim 1 is characterized in that: The ton bag conveyor (1) is provided with multiple ton bag stack storage positions.

3. The device for removing and opening ton bags according to claim 1 is characterized in that: The ton bag shaping mechanism (3) comprises a shaping support plate (31), a left shaping plate (32) is arranged on the upper left side of the front part of the shaping support plate (31), the lower end surface of the left shaping plate (32) is close to the upper surface of the shaping support plate (31), the left shaping plate (32) is driven by a left shaping cylinder (33) to realize multi-point positioning horizontal left and right movement, the left shaping cylinder (33) is connected to a shaping frame (34), and a right shaping swing rod (36) is arranged in a long notch on the right side of the front part of the shaping support plate (31). ), the right shaping swing rod (36) is driven by the right swing cylinder (35) to swing up and down, when the right shaping swing rod (36) swings to the lower position, its uppermost end is lower than the upper surface of the shaping support plate (31), the right swing cylinder (35) is connected to the shaping frame (34), a bag pushing plate (37) is provided in the long notch at the rear of the shaping support plate (31), the bag pushing plate (37) is driven by the bag pushing cylinder (38) to move horizontally forward and backward, and the bag pushing cylinder (38) is connected to the shaping frame (34).

4. The device for removing and opening ton bags according to claim 3 is characterized in that: The bag opening and pressing mechanism (4) comprises a pressing claw (44), which is driven by a pressing lifting cylinder (42) to realize vertical lifting action, the pressing lifting cylinder (42) is connected to one end of a turning frame (43), the other end of the turning frame (43) is hinged to a lever of the pressing claw turning cylinder (41), the lever body of the pressing claw turning cylinder (41) is hinged to the front lower part of the shaping frame (34), the turning frame (43) is hinged to the front middle part of the shaping frame (34), the pressing claw turning cylinder (41) drives the pressing lifting cylinder (42) and the pressing claw (44) to realize up and down turning action, and when the pressing lifting cylinder (42) and the pressing claw (44) are turned to the lower position, their uppermost ends are lower than the upper surface of the shaping support plate (31).

5. The device for removing and opening ton bags according to claim 1 is characterized in that: A machine vision system (6) for locating the bag opening is also provided at the middle of the front end of the support frame (9). The machine vision system (6) identifies and locates the bag opening positioning color block (C) on the ton bag (A) to determine whether the bag opening of the ton bag (A) meets the bag opening conditions. The machine vision system (6) controls the ton bag shaping mechanism (3) to remove the ton bags (A) that do not meet the bag opening conditions from the production line.

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