Device for automatically clamping four corners of a ton bag

Abstract

The device for automatically clamping four corners of a ton bag includes a central empty bag tray, the upper end surface of which is rectangular, a bag suction and clamping ear mechanism is arranged above the empty bag tray, the bag suction and clamping ear mechanism can vertically lift, a first ear supporting mechanism and a second ear supporting mechanism are arranged on the rear side of the empty bag tray, the first ear supporting mechanism and the second ear supporting mechanism are symmetrically arranged about the Y axis, a third ear supporting mechanism and a fourth ear supporting mechanism are arranged on the front side of the empty bag tray, the third ear supporting mechanism and the fourth ear supporting mechanism are symmetrically arranged about the Y axis, the first ear supporting mechanism and the fourth ear supporting mechanism are symmetrically arranged about the X axis, and the second ear supporting mechanism and the third ear supporting mechanism are symmetrically arranged about the X axis, and the first ear supporting mechanism, the second ear supporting mechanism, the third ear supporting mechanism and the fourth ear supporting mechanism can move along the Y axis. The device can automatically support and clamp the four corners of the ton bag, thereby realizing automatic packaging of the ton bag.

Description

Technical Field

[0001] This invention relates to a device for automatically gripping the four corner lugs of a ton bag, belonging to the field of packaging machinery. Background Technology

[0002] Patent document CN115724021A discloses an automatic packaging machine suitable for four-corner lifting lug ton bags. After the empty bag is lifted using a suction cup mechanism, the four corner lifting lugs of the ton bag hang naturally. In actual production, other methods are also used... Figure 2 The illustration shows an empty bag A, with its two ends of the hanging ears B connected to the diagonal edges, and the middle of the hanging ears B overlapping the upper surface of the empty bag A. The empty bag A is inflated and unfolded, with the four corner hanging ears B extended as shown in the illustration. Figure 3 As shown, when this empty bag A is lifted using the existing suction cup mechanism, the four corner lugs B cannot hang down naturally; instead, the lugs B remain stacked on top of the empty bag. Therefore, the existing technical solution is not applicable to this empty bag A. Summary of the Invention

[0003] To automatically grip the lifting lugs stacked on the top surface of empty bags and achieve automatic packaging of ton bags, this invention proposes a device for automatically gripping the lifting lugs at the four corners of ton bags. It includes an empty bag tray 8 located at the center, with a rectangular upper surface. A suction-clip lifting lug mechanism 3 is positioned directly above the upper surface of the empty bag tray 8. The suction-clip lifting lug mechanism 3 can be vertically raised and lowered. A first supporting lifting lug mechanism 1 and a second supporting lifting lug mechanism 2 are located on the rear side of the empty bag tray 8, symmetrically arranged about the Y-axis. A third supporting lifting lug mechanism 4 and a fourth supporting lifting lug mechanism 5 are located on the front side of the empty bag tray 8, symmetrically arranged about the Y-axis. The first supporting lifting lug mechanism 1 and the fourth supporting lifting lug mechanism 5 are symmetrically arranged about the X-axis, and the second supporting lifting lug mechanism 2 and the third supporting lifting lug mechanism 4 are symmetrically arranged about the X-axis.

[0004] The automatic clamping device for the four corner lifting lugs of the ton bag also includes a bracket 6. Front bag support guide rails 7 are provided on both the left and right sides of the front end of the bracket 6. The front bag support guide rails 7 are slidably connected to the front support slider 10. The front support slider 10 is connected to the lower end of the front support 9. The upper end of the front support 9 is connected to the third support lifting lug mechanism 4 and the fourth support lifting lug mechanism 5. Rear bag support guide rails 13 are provided on both the left and right sides of the rear end of the bracket 6. The rear bag support guide rails 13 are slidably connected to the rear support slider 14. The rear support slider 14 is connected to the rear support... The lower end of the frame 18 and the upper end of the rear bracket 18 are connected to the first support lug mechanism 1 and the second support lug mechanism 2. The lower middle part of the front bracket 9 is also hinged to the cylinder rod of the front bag support cylinder 11. The cylinder body of the front bag support cylinder 11 is connected to the bracket 6. The front bag support cylinder 11 drives the front bracket 9 to move along the Y-axis. The lower middle part of the rear bracket 18 is also hinged to the cylinder rod of the rear bag support cylinder 12. The cylinder body of the rear bag support cylinder 12 is connected to the bracket 6. The rear bag support cylinder 12 drives the rear bracket 18 to move along the Y-axis.

[0005] The first support lug mechanism 1 includes a bag support plate 1-1. A support lug cylinder 1-9 is provided on the left side of the upper surface of the bag support plate 1-1. The movement direction of the cylinder rod of the support lug cylinder 1-9 is parallel to the diagonal of the empty bag A. The cylinder rod of the support lug cylinder 1-9 is connected to a vertically arranged movable base plate 1-8. A support plate cylinder 1-7 is provided on the upper part of the movable base plate 1-8. The lower end of the cylinder rod of the support plate cylinder 1-7 is connected to the support plate 1-6. The support plate cylinder 1-7 drives the support plate 1-6 to move vertically up and down. A bag pressing cylinder 1-3 is provided on the right side of the upper surface of the bag support plate 1-1. The cylinder rod of the bag pressing cylinder 1-3 is connected to the pressing... The middle part of the bag plate 1-2 is hinged, the lower end of the bag pressing plate 1-2 is hinged to the bag supporting plate 1-1, and a rectangular swinging support plate 1-4 is also provided in the middle of the upper surface of the bag supporting plate 1-1. The swinging support plate 1-4 is located directly in front of the movement axis of the support ear cylinder 1-9. The rear end of the swinging support plate 1-4 is hinged to the bag supporting plate 1-1, the middle part of the swinging support plate 1-4 is hinged to the cylinder rod of the swing plate cylinder 1-5, and the cylinder body of the swing plate cylinder 1-5 is hinged to the lower end of the bag supporting plate 1-1. When the cylinder rod of the swing plate cylinder 1-5 extends, the upper surface of the swinging support plate 1-4 is flush with the upper surface of the bag supporting plate 1-1.

[0006] The bag suction clamping lug mechanism 3 includes a horizontally arranged connecting column 3-1. One end of the connecting column 3-1 is connected to the U-shaped frame 3-2, and the other end of the connecting column 3-1 is connected to the external motion mechanism. Each of the four corners of the U-shaped frame 3-2 is provided with a clamping lug mechanism 3-3 arranged diagonally. Each of the front and rear side beams of the U-shaped frame 3-2 is provided with a bag clamping mechanism 3-5. The U-shaped frame 3-2 is also provided with multiple sets of bag retrieval suction cups 3-4.

[0007] The clamping lug mechanism 3-3 includes a base 3-31. The rear end of the base 3-31 is connected to the cylinder rod of the base cylinder 3-32. The cylinder body of the base cylinder 3-32 is connected to the U-shaped frame 3-2. The axis of motion of the cylinder rod of the base cylinder 3-32 coincides with the diagonal of the empty bag A. The base cylinder 3-32 drives the base 3-31 to move horizontally. A clamping lug cylinder 3-33 is provided in the middle of the upper part of the base 3-31. Two clamping lug cylinders are located at the lower end of the base 3-31. Each side is hinged to the outer end of a swing clamping plate 3-36. The middle part of the swing clamping plate 3-36 is hinged to the linkage mechanism 3-34. The linkage mechanism 3-34 is hinged to the cylinder rod of the base cylinder 3-32. The base cylinder 3-32 drives the two swing clamping plates 3-36 to swing up and down synchronously. The lower left and right outer sides of the base 3-31 are also provided with fixed clamping plates 3-35. When the swing clamping plates 3-36 swing down to the lower position, they are pressed against the fixed clamping plates 3-35.

[0008] The lower ends of the first support lug mechanism 1, the second support lug mechanism 2, the third support lug mechanism 4 and the fourth support lug mechanism 5 are all provided with adjusting sliders 17 and adjusting nuts. The adjusting sliders 17 are slidably connected to the adjusting guide rail 16 below. The adjusting guide rail 16 is fixed on the front bracket 9 or the rear bracket 18. The axis of the adjusting guide rail 16 is parallel to the diagonal of the empty bag A. The adjusting nut is threadedly connected to one end of the adjusting screw 15. The other end of the adjusting screw 15 is hinged to the front bracket 9 or the rear bracket 18.

[0009] The working principle of this invention is: A. Empty bag A is placed on empty bag tray 8. The bag suction clamp lifting lug mechanism 3 descends so that the bag picking suction cup 3-4 sucks up the upper surface of the empty bag. Then the bag suction clamp lifting lug mechanism 3 rises a certain distance and the bag clamping mechanism 3-5 closes to clamp the edge of the empty bag. B. The four support lug mechanisms on the front and rear sides move simultaneously along the Y axis to the empty bag. The four bag support plates extend into the lower part of the upper surface of the empty bag A. The suction bag clamp lug mechanism 3 descends and releases the upper surface of the empty bag onto the bag support plate. The bag pressing plates 1-2 press down on the edge of the empty bag. The suction bag clamp lug mechanism 3 rises a certain distance. C. The support plates 1-6 move toward the center of the empty bag A and pass over the four corner lugs B. Then the support plates 1-6 descend and get close to the upper surface of the empty bag A. Finally, the support plates 1-6 move outward away from the center of the empty bag A, thereby opening up the lugs B stacked above the upper surface of the empty bag A. D. The swinging support plate 1-4 swings downward to open and form a notch. The base 3-31 extends outward along the diagonal direction of the empty bag A. The suction bag clamp lifting lug mechanism 3 descends to the low position. The bag suction cup 3-4 sucks up the upper surface of the empty bag. The fixing clamp 3-35 is inserted downward into the notch and is located on the outside of the opened lifting lug B, while the swinging clamp 3-36 is located on the inside of the lifting lug B. E. The swing clamp 3-36 swings downward to open, clamping the lifting lug B between the swing clamp 3-36 and the fixed clamp 3-35. The suction bag clamping lifting lug mechanism 3 clamps the four corner lifting lugs of the empty bag A, and proceeds to the next process.

[0010] The beneficial effects of this invention are: By utilizing four supporting lifting lug mechanisms corresponding to the four corner lifting lugs B of the empty bag A, the stacked lifting lugs B are spread outwards, and the spread lifting lugs B are clamped by the swing clamping plate 3-36 and the fixed clamping plate 3-35, thereby realizing the function of automatically clamping the four corner lifting lugs of the ton bag, thus preparing the prerequisite for the automatic packaging of ton bags. The screw and nut adjustment mechanism allows this invention to adapt to empty bags A of different lengths and widths. Attached Figure Description

[0011] Figure 1 This is a top view of the present invention.

[0012] Figure 2 This is a top view of ton bag A.

[0013] Figure 3 This is a schematic diagram showing the ton bag A unfolded and the lifting lug B extended.

[0014] Figure 4 This is a front view of the present invention.

[0015] Figure 5 This is the left view of the present invention.

[0016] Figure 6 This is a schematic diagram of the first support lug mechanism 1.

[0017] Figure 7 This is a three-dimensional isometric view of the suction bag clamping lug mechanism 3.

[0018] Figure 8 This is a schematic diagram of the clamping lug mechanism 3-3.

[0019] Figure 9 This is a schematic diagram of the swing clamp 3-36 swinging downwards to open.

[0020] Figure 10 This is a three-dimensional isometric view of the present invention before the lifting lug B is opened.

[0021] Figure 11 This is a top view of the present invention before the lifting lug B is extended.

[0022] Figure 12 This is a partial view of the support plate 1-6 after the lifting lug B is opened. Implementation

[0023] For detailed embodiments of the present invention, please refer to Figures 1-12An automatic clamping device for four corner lifting lugs of a ton bag includes an empty bag tray 8 located at the center. The upper surface of the empty bag tray 8 is rectangular. A suction bag clamping lug mechanism 3 is provided directly above the upper surface of the empty bag tray 8. The suction bag clamping lug mechanism 3 can be vertically lifted and lowered. A first support lug mechanism 1 and a second support lug mechanism 2 are provided on the rear side of the empty bag tray 8. The first support lug mechanism 1 and the second support lug mechanism 2 are symmetrically arranged about the Y-axis. A third support lug mechanism 4 and a fourth support lug mechanism 5 are provided on the front side of the empty bag tray 8. The third support lug mechanism 4 and the fourth support lug mechanism 5 are symmetrically arranged about the Y-axis. The first support lug mechanism 1 and the fourth support lug mechanism 5 are symmetrically arranged about the X-axis. The second support lug mechanism 2 and the third support lug mechanism 4 are symmetrically arranged about the X-axis.

[0024] The aforementioned automatic clamping device for the four corner lifting lugs of a ton bag also includes a bracket 6. Front bag-holding guide rails 7 are provided on both the left and right sides of the front end of the bracket 6. The front bag-holding guide rails 7 are slidably connected to the front support slider 10. The front support slider 10 is connected to the lower end of the front support 9. The upper end of the front support 9 is connected to the third support lifting lug mechanism 4 and the fourth support lifting lug mechanism 5. Rear bag-holding guide rails 13 are provided on both the left and right sides of the rear end of the bracket 6. The rear bag-holding guide rails 13 are slidably connected to the rear support slider 14. The rear support slider 14 is connected to the rear support... The lower end of the frame 18 and the upper end of the rear bracket 18 are connected to the first support lug mechanism 1 and the second support lug mechanism 2. The lower middle part of the front bracket 9 is also hinged to the cylinder rod of the front bag support cylinder 11. The cylinder body of the front bag support cylinder 11 is connected to the bracket 6. The front bag support cylinder 11 drives the front bracket 9 to move along the Y-axis. The lower middle part of the rear bracket 18 is also hinged to the cylinder rod of the rear bag support cylinder 12. The cylinder body of the rear bag support cylinder 12 is connected to the bracket 6. The rear bag support cylinder 12 drives the rear bracket 18 to move along the Y-axis.

[0025] The aforementioned first support lug mechanism 1 includes a bag support plate 1-1. A support lug cylinder 1-9 is located on the left side of the upper surface of the bag support plate 1-1. The cylinder rod of the support lug cylinder 1-9 moves in a direction parallel to the diagonal of the empty bag A. The cylinder rod of the support lug cylinder 1-9 is connected to a vertically arranged movable base plate 1-8. A support plate cylinder 1-7 is located on the upper part of the movable base plate 1-8. The lower end of the cylinder rod of the support plate cylinder 1-7 is connected to a support plate 1-6. The support plate cylinder 1-7 drives the support plate 1-6 to move vertically up and down. A bag pressing cylinder 1-3 is located on the right side of the upper surface of the bag support plate 1-1. The cylinder rod of the bag pressing cylinder 1-3 is connected to the pressing... The middle part of the bag plate 1-2 is hinged, the lower end of the bag pressing plate 1-2 is hinged to the bag supporting plate 1-1, and a rectangular swinging support plate 1-4 is also provided in the middle of the upper surface of the bag supporting plate 1-1. The swinging support plate 1-4 is located directly in front of the movement axis of the support ear cylinder 1-9. The rear end of the swinging support plate 1-4 is hinged to the bag supporting plate 1-1, the middle part of the swinging support plate 1-4 is hinged to the cylinder rod of the swing plate cylinder 1-5, and the cylinder body of the swing plate cylinder 1-5 is hinged to the lower end of the bag supporting plate 1-1. When the cylinder rod of the swing plate cylinder 1-5 extends, the upper surface of the swinging support plate 1-4 is flush with the upper surface of the bag supporting plate 1-1.

[0026] The aforementioned suction bag clamping lug mechanism 3 includes a horizontally arranged connecting column 3-1. One end of the connecting column 3-1 is connected to the U-shaped frame 3-2, and the other end of the connecting column 3-1 is connected to an external motion mechanism. Each of the four corners of the U-shaped frame 3-2 is provided with a clamping lug mechanism 3-3 arranged diagonally. Each of the front and rear side beams of the U-shaped frame 3-2 is provided with a bag clamping mechanism 3-5. The U-shaped frame 3-2 is also provided with multiple sets of bag-removing suction cups 3-4.

[0027] The aforementioned clamping lug mechanism 3-3 includes a base 3-31. The rear end of the base 3-31 is connected to the cylinder rod of the base cylinder 3-32. The cylinder body of the base cylinder 3-32 is connected to the U-shaped frame 3-2. The axis of motion of the cylinder rod of the base cylinder 3-32 coincides with the diagonal of the empty bag A. The base cylinder 3-32 drives the base 3-31 to move horizontally. A clamping lug cylinder 3-33 is provided in the middle of the upper part of the base 3-31. Two clamping lug cylinders are located at the lower end of the base 3-31. Each side is hinged to the outer end of a swing clamping plate 3-36. The middle part of the swing clamping plate 3-36 is hinged to the linkage mechanism 3-34. The linkage mechanism 3-34 is hinged to the cylinder rod of the base cylinder 3-32. The base cylinder 3-32 drives the two swing clamping plates 3-36 to swing up and down synchronously. The lower left and right outer sides of the base 3-31 are also provided with fixed clamping plates 3-35. When the swing clamping plates 3-36 swing down to the lower position, they are pressed against the fixed clamping plates 3-35.

[0028] The lower ends of the first support lug mechanism 1, the second support lug mechanism 2, the third support lug mechanism 4 and the fourth support lug mechanism 5 are all provided with adjusting sliders 17 and adjusting nuts. The adjusting sliders 17 are slidably connected to the adjusting guide rail 16 below. The adjusting guide rail 16 is fixed on the front bracket 9 or the rear bracket 18. The axis of the adjusting guide rail 16 is parallel to the diagonal of the empty bag A. The adjusting nut is threadedly connected to one end of the adjusting screw 15. The other end of the adjusting screw 15 is hinged to the front bracket 9 or the rear bracket 18.

Claims

1. A device for automatically gripping the four corner lugs of a ton bag, comprising an empty bag tray (8) located at the center, the upper surface of the empty bag tray (8) being rectangular, characterized in that: The empty bag tray (8) is provided with a suction bag clamping lug mechanism (3) directly above the upper surface of the upper end. The suction bag clamping lug mechanism (3) can be lifted vertically. The empty bag tray (8) is provided with a first support lug mechanism (1) and a second support lug mechanism (2) on the rear side. The first support lug mechanism (1) and the second support lug mechanism (2) are symmetrical about the Y-axis. The empty bag tray (8) is provided with a third support lug mechanism (4) and a fourth support lug mechanism (5) on the front side. The third support lug mechanism (4) and the fourth support lug mechanism (5) are symmetrical about the Y-axis. The first support lug mechanism (1) and the fourth support lug mechanism (5) are symmetrical about the X-axis. The second support lug mechanism (2) and the third support lug mechanism (4) are symmetrical about the X-axis. The first support lug mechanism (1), the second support lug mechanism (2), the third support lug mechanism (4) and the fourth support lug mechanism (5) can all move back and forth along the Y-axis. The first support lug mechanism (1) includes a bag support plate (1-1). A support lug cylinder (1-9) is provided on the left side of the upper surface of the bag support plate (1-1). The direction of movement of the cylinder rod of the support lug cylinder (1-9) is parallel to the diagonal of the empty bag (A). The cylinder rod of the support lug cylinder (1-9) is connected to a vertically arranged movable base plate (1-8). A support plate cylinder (1-7) is provided on the upper part of the movable base plate (1-8). The lower end of the cylinder rod of the support plate cylinder (1-7) is connected to the support plate (1-6). The support plate cylinder (1-7) drives the support plate (1-6) to move vertically up and down. A bag pressing cylinder (1-3) is provided on the right side of the upper surface of the bag support plate (1-1). The cylinder rod of the bag pressing cylinder (1-3) is hinged to the middle of the bag pressing plate (1-2). The lower end of the bag pressing plate (1-2) is hinged to the bag support plate (1-1). The suction bag clamping lug mechanism (3) includes a horizontally arranged connecting column (3-1), one end of which is connected to the U-shaped frame (3-2), and the other end of which is connected to the external motion mechanism. The four corners of the U-shaped frame (3-2) are provided with clamping lug mechanisms (3-3) arranged diagonally. The clamping lug mechanism (3-3) can move horizontally along the diagonal direction of the empty bag (A). The clamping lug mechanism (3-3) can also clamp the opened lug (B). The front and rear side beams of the U-shaped frame (3-2) are provided with bag clamping mechanisms (3-5). The U-shaped frame (3-2) is also provided with multiple sets of bag retrieval suction cups (3-4).

2. The device for automatically gripping the four corner lugs of a ton bag according to claim 1, characterized in that: It also includes a bracket (6), on the left and right sides of the front end of the bracket (6) are provided front bag guide rails (7), the front bag guide rails (7) are slidably connected to the front bracket slider (10), the front bracket slider (10) is connected to the lower end of the front bracket (9), the upper end of the front bracket (9) is connected to the third support lug mechanism (4) and the fourth support lug mechanism (5), and on the left and right sides of the rear end of the bracket (6) are provided rear bag guide rails (13), the rear bag guide rails (13) are slidably connected to the rear bracket slider (14), the rear bracket slider (14) is connected to the lower end of the rear bracket (18). The upper end of the rear bracket (18) is connected to the first support lug mechanism (1) and the second support lug mechanism (2). The lower middle part of the front bracket (9) is also hinged to the cylinder rod of the front bag cylinder (11). The cylinder body of the front bag cylinder (11) is connected to the bracket (6). The front bag cylinder (11) drives the front bracket (9) to move along the Y-axis. The lower middle part of the rear bracket (18) is also hinged to the cylinder rod of the rear bag cylinder (12). The cylinder body of the rear bag cylinder (12) is connected to the bracket (6). The rear bag cylinder (12) drives the rear bracket (18) to move along the Y-axis.

3. The device for automatically gripping the four corner lugs of a ton bag according to claim 1, characterized in that: The clamping lug mechanism (3-3) includes a base (3-31), the rear end of which is connected to the cylinder rod of a base cylinder (3-32). The cylinder body of the base cylinder (3-32) is connected to a U-shaped frame (3-2). The axis of motion of the cylinder rod of the base cylinder (3-32) coincides with the diagonal of the empty bag (A). The base cylinder (3-32) drives the base (3-31) to move horizontally. A clamping lug cylinder (3-33) is provided in the middle of the upper part of the base (3-31). The lower part of the base (3-31) is... The two ends are respectively hinged to the outer ends of a swing clamp (3-36). The middle part of the swing clamp (3-36) is hinged to the linkage mechanism (3-34). The linkage mechanism (3-34) is hinged to the cylinder rod of the base cylinder (3-32). The base cylinder (3-32) drives the two swing clamps (3-36) to swing up and down synchronously. The lower end of the base (3-31) is also provided with a fixed clamp (3-35) on the left and right outer sides. When the swing clamp (3-36) swings down to the lower position, it is pressed against the fixed clamp (3-35).

4. The device for automatically gripping the four corner lugs of a ton bag according to claim 1, characterized in that: A rectangular swing plate (1-4) is also provided in the middle of the upper surface of the bag support plate (1-1). The swing plate (1-4) is located in front of the movement axis of the support ear cylinder (1-9). The rear end of the swing plate (1-4) is hinged to the bag support plate (1-1). The middle part of the swing plate (1-4) is hinged to the cylinder rod of the swing plate cylinder (1-5). The cylinder body of the swing plate cylinder (1-5) is hinged to the lower end of the bag support plate (1-1). When the cylinder rod of the swing plate cylinder (1-5) extends, the upper surface of the swing plate (1-4) is flush with the upper surface of the bag support plate (1-1).

5. The device for automatically gripping the four corner lugs of a ton bag according to claim 1, characterized in that: The lower ends of the first support lug mechanism (1), the second support lug mechanism (2), the third support lug mechanism (4) and the fourth support lug mechanism (5) are all provided with an adjusting slider (17) and an adjusting nut. The adjusting slider (17) is slidably connected to the adjusting guide rail (16) below. The adjusting guide rail (16) is fixed on the front bracket (9) or the rear bracket (18). The axis of the adjusting guide rail (16) is parallel to the diagonal of the empty bag (A). The adjusting nut is threadedly connected to one end of the adjusting screw (15). The other end of the adjusting screw (15) is hinged to the front bracket (9) or the rear bracket (18).

Images