Automatic hooking device for lifting lugs at four corners of ton bag

Abstract

An automatic hooking device for lifting lugs at four corners of a ton bag belongs to the field of packaging machinery and comprises a bag lifting frame, lifting hook mechanisms are arranged at the lower ends of the four corners of the bag lifting frame, the lifting hook mechanisms are arranged in the diagonal direction of the bag lifting frame, and each lifting hook mechanism comprises a mounting plate; the rear end of the mounting plate is connected with a cylinder body of a drag hook translation air cylinder, a cylinder rod of the drag hook translation air cylinder is connected to the upper portion of a drag hook transferring seat, a drag hook is arranged on the lower portion of the drag hook transferring seat, a hook head of the drag hook is arranged upwards in the Z-axis direction and located on the side close to the Z-axis, and a shifting fork is arranged outside the drag hook in the left-right width direction. The upper end of the shifting fork is hinged to the lower middle portion of the drag hook transferring base, the upper portion of the shifting fork is hinged to a cylinder rod of the lifting lug removing air cylinder, and a cylinder body of the lifting lug removing air cylinder is hinged to the upper end of the air cylinder installation frame. The hooking action is simple, the function of automatically hooking the lifting lugs at the four corners of the ton bag is achieved, and the problem of unhooking in the packaging process is solved.

Description

Technical Field

[0001] The utility model relates to an automatic hooking device for four-corner lifting ears of a ton bag, belonging to the field of packaging machinery. Background Art

[0002] Patent document CN220411049U discloses a device for automatically hooking the lifting ears at the four corners of a ton bag. The device uses a lifting ear handover mechanism to open the lifting ears and then transfer them to the hook mechanism for hooking, thereby realizing the function of automatically hooking the lifting ears at the four corners of the ton bag; however, the action of automatically hooking the lifting ears of the device is relatively cumbersome, and the lifting ears are easily unhooked during the handover process, resulting in failure to hook the ton bag, affecting the work efficiency of automatic packaging. Summary of the invention

[0003] In order to solve the problems of cumbersome actions and easy unhooking of the lifting ears at the four corners of the ton bag when automatically hooking, the utility model proposes an automatic hooking device for the lifting ears at the four corners of the ton bag, which includes a bag hanging frame 1, and the lower ends of the four corners of the bag hanging frame 1 are provided with hook mechanisms 2, the hook mechanisms 2 are arranged along the diagonal direction of the bag hanging frame 1, and two adjacent groups of hook mechanisms 2 are symmetrically arranged about the X-axis or the Y-axis, the hook mechanism 2 includes a mounting plate 21, the mounting plate 21 is connected to the lower end of the bag hanging frame 1, a horizontally arranged guide rail 22 is provided at the lower end of the mounting plate 21, a vertically arranged hook transfer seat 24 is provided below the mounting plate 21, the rear end of the mounting plate 21 is connected to the cylinder body of the hook translation cylinder 23, and the cylinder rod of the hook translation cylinder 23 is connected to A hook 28 is provided at the upper part of the hook transfer seat 24 and the lower part of the hook transfer seat 24. The hook head of the hook 28 is arranged upward along the Z-axis direction and is located on the side close to the Z-axis. The hook translation cylinder 23 drives the hook transfer seat 24 and the hook 28 to move horizontally along the guide rail 22. A fork 29 is provided on the outside of the left and right width directions of the hook 28. The upper end of the fork 29 is hinged to the middle and lower part of the hook transfer seat 24, and the upper part of the fork 29 is hinged to the cylinder rod of the ear-removing cylinder 25. The cylinder body of the ear-removing cylinder 25 is hinged to the upper end of the cylinder mounting frame 26. The front end of the cylinder mounting frame 26 is fixed to the lower rear end of the hook transfer seat 24. The ear-removing cylinder 25 drives the fork 29 to swing upward to lift the ear B and detach it from the hook 28.

[0004] The hook 28 includes a sickle-shaped hook body 281, the upper end of the hook head of the hook body 281 is hinged to the upper part of the hook plate 282, the lower end of the hook plate 282 is hinged to one end of the connecting rod 283, and the other end of the connecting rod 283 is hinged to the lower end of the hook transfer seat 24. The hook tail of the hook body 281 passes through the lower part of the hook transfer seat 24 and is connected to the cylinder rod of the anti-unhooking cylinder 27. The cylinder body of the anti-unhooking cylinder 27 is connected to the rear end of the cylinder mounting frame 26. When the anti-unhooking cylinder 27 is in an extended state, the vertical center line of the head of the hook plate 282 coincides with the vertical center line of the hook head of the hook body 281. When the anti-unhooking cylinder 27 drives the hook body 281 to move along the inside of the hook transfer seat 24 and toward the hook transfer seat 24, the head of the hook plate 282 swings toward one side of the hook transfer seat 24.

[0005] The working principle of the utility model is:

[0006] A. The external bagging mechanism transfers the ton bag A with the four corner lifting ears B opened to the inner side surrounded by the four hook mechanisms 2, and makes the lifting ears B higher than the upper end of the draw hook 28;

[0007] B. The hook translation cylinder 23 drives the hook transfer seat 24 to move horizontally inward along the guide rail 22, so that the hook head of the hook body 281 is located directly below the lifting lug B, and the external bagging mechanism drives the ton bag A to descend, so that the lifting lugs B all fall into the hook 28;

[0008] C. The external bagging mechanism releases the ton bag A, the hook translation cylinder 23 drives the hook transfer seat 24 to move horizontally outward along the guide rail 22, so that the hook 28 tightens the lifting lug B, and the anti-unhooking cylinder 27 drives the hook body 281 to move toward the hook transfer seat 24, and the head of the hook plate 282 swings toward the side of the hook transfer seat 24, completing the hooking action of the lifting lug B to prevent unhooking;

[0009] D. After the ton bag A is inflated, it starts to drop out. When the dropping is completed, the anti-unhooking cylinder 27 drives the hook body 281 to move away from the hook transfer seat 24, and the head of the hook plate 282 swings back to the side away from the hook transfer seat 24. The unhooking eye cylinder 25 drives the fork 29 to swing upward, so that the lifting eye B is lifted and separated from the hook 28, completing the unhooking action.

[0010] The beneficial effects of the utility model are:

[0011] A. The hook mechanism 2 is used to directly hook the lifting lug B, realizing the function of automatically hooking the lifting lugs at the four corners of the ton bag. Its structure and hooking action are simple. The pull hook 28 can hold the lowered lifting lug B, and then drive the lifting lug B to move outward to tighten it, thus preventing the lifting lug B from being unhooked.

[0012] B. The action of the head of the hook plate 282 swinging toward the side of the hook transfer seat 24 can further avoid the problem of the lifting ear B being unhooked during the subsequent packaging process, thereby improving the reliability of the device action.

[0013] C. The lifting eye B is separated from the hook 28 by using the shift fork 29 after packaging, realizing the automatic unhooking action, thus providing guarantee for the subsequent ton bag A to automatically enter the next process. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional axonometric view of the utility model.

[0015] Figure 2 It is the front view of the utility model.

[0016] Figure 3 It is a top view of the utility model.

[0017] Figure 4 It is a structural schematic diagram of the hook mechanism 2.

[0018] Figure 5 It is a structural schematic diagram of the draw hook 28 and the shift fork 29.

[0019] Figure 6 It is a schematic diagram of the state where the ton bag A is transferred to the inner side of the four hook mechanisms 2.

[0020] Figure 7 It is a schematic diagram of the state where the hook mechanism 2 moves to below the lifting ear B.

[0021] Figure 8 It is a schematic diagram of the state in which the lifting eye B falls into the drag hook 28.

[0022] Fig. 9 It is a schematic diagram of the hooking state of the lifting eye B.

[0023] Fig.10 This is a schematic diagram of the state where the lifting eye B is unhooked. DETAILED DESCRIPTION

[0024] The specific implementation of the utility model can be found in Figure 1 to Figure 10, an automatic hook hanging device for the four-corner lifting ears of a ton bag, comprising a bag hanging frame 1, the lower ends of the four corners of the bag hanging frame 1 are each provided with a hook mechanism 2, the hook mechanism 2 is arranged along the diagonal direction of the bag hanging frame 1, and two adjacent groups of hook mechanisms 2 are symmetrically arranged about the X-axis or the Y-axis, the hook mechanism 2 comprises a mounting plate 21, the mounting plate 21 is connected to the lower end of the bag hanging frame 1, a horizontally arranged guide rail 22 is arranged at the lower end of the mounting plate 21, a vertically arranged hook transfer seat 24 is arranged below the mounting plate 21, the rear end of the mounting plate 21 is connected to the cylinder body of the hook translation cylinder 23, the cylinder rod of the hook translation cylinder 23 is connected to the upper part of the hook transfer seat 24, and the hook transfer seat 24 A hook 28 is provided at the lower part, and the hook head of the hook 28 is arranged upward along the Z-axis direction and is located on the side close to the Z-axis. The hook translation cylinder 23 drives the hook transfer seat 24 and the hook 28 to move horizontally along the guide rail 22. A fork 29 is provided on the outside of the hook 28 in the left and right width directions. The upper end of the fork 29 is hinged to the middle and lower part of the hook transfer seat 24, and the upper part of the fork 29 is hinged to the cylinder rod of the ear-removing cylinder 25. The cylinder body of the ear-removing cylinder 25 is hinged to the upper end of the cylinder mounting frame 26, and the front end of the cylinder mounting frame 26 is fixed to the lower rear end of the hook transfer seat 24. The ear-removing cylinder 25 drives the fork 29 to swing upward to lift the ear B out of the hook 28.

[0025] The hook 28 includes a sickle-shaped hook body 281, the upper end of the hook head of the hook body 281 is hinged to the upper part of the hook plate 282, the lower end of the hook plate 282 is hinged to one end of the connecting rod 283, and the other end of the connecting rod 283 is hinged to the lower end of the hook transfer seat 24. The hook tail of the hook body 281 passes through the lower part of the hook transfer seat 24 and is connected to the cylinder rod of the anti-unhooking cylinder 27. The cylinder body of the anti-unhooking cylinder 27 is connected to the rear end of the cylinder mounting frame 26. When the anti-unhooking cylinder 27 is in an extended state, the vertical center line of the head of the hook plate 282 coincides with the vertical center line of the hook head of the hook body 281. When the anti-unhooking cylinder 27 drives the hook body 281 to move along the inside of the hook transfer seat 24 and toward the hook transfer seat 24, the head of the hook plate 282 swings toward one side of the hook transfer seat 24.

Claims

1. An automatic hooking device for four-corner lifting ears of a ton bag, comprising a bag hanging frame (1), wherein the lower ends of the four corners of the bag hanging frame (1) are each provided with a hook mechanism (2), the hook mechanism (2) being arranged along the diagonal direction of the bag hanging frame (1), and two adjacent groups of hook mechanisms (2) being symmetrically arranged about an X-axis or a Y-axis, characterized in that: The hook mechanism (2) comprises a mounting plate (21), the mounting plate (21) is connected to the lower end of the hanging bag frame (1), a horizontally arranged guide rail (22) is provided at the lower end of the mounting plate (21), a vertically arranged hook transfer seat (24) is provided below the mounting plate (21), the rear end of the mounting plate (21) is connected to the cylinder body of the hook translation cylinder (23), the cylinder rod of the hook translation cylinder (23) is connected to the upper part of the hook transfer seat (24), a hook (28) is provided at the lower part of the hook transfer seat (24), the hook head of the hook (28) is arranged upward along the Z-axis direction and is located on a side close to the Z-axis, and the hook translation cylinder (23) is connected to the upper part of the hook transfer seat (24). ) drives the hook transfer seat (24) and the hook (28) to move horizontally along the guide rail (22); a shift fork (29) is provided on the outside of the hook (28) in the left and right width directions; the upper end of the shift fork (29) is hinged to the middle and lower part of the hook transfer seat (24); the upper part of the shift fork (29) is hinged to the cylinder rod of the lifting eye removal cylinder (25); the cylinder body of the lifting eye removal cylinder (25) is hinged to the upper end of the cylinder mounting frame (26); the front end of the cylinder mounting frame (26) is fixed to the lower rear end of the hook transfer seat (24); the lifting eye removal cylinder (25) drives the shift fork (29) to swing upward to lift the lifting eye (B) and detach it from the hook (28).

2. The automatic hooking device for the four-corner lifting ears of a ton bag according to claim 1 is characterized by: The hook (28) comprises a sickle-shaped hook body (281), the upper end of the hook head of the hook body (281) is hinged to the upper part of the hook plate (282), the lower end of the hook plate (282) is hinged to one end of a connecting rod (283), the other end of the connecting rod (283) is hinged to the lower end of the hook transfer seat (24), the hook tail of the hook body (281) passes through the lower part of the hook transfer seat (24) and is connected to the cylinder rod of the anti-unhooking cylinder (27), and the anti-unhooking cylinder The cylinder body of (27) is connected to the rear end of the cylinder mounting frame (26). When the anti-unhooking cylinder (27) is in an extended state, the vertical center line of the head of the hook plate (282) coincides with the vertical center line of the hook head of the hook body (281). When the anti-unhooking cylinder (27) drives the hook body (281) to move along the inside of the hook transfer seat (24) and toward the hook transfer seat (24), the head of the hook plate (282) swings toward the side of the hook transfer seat (24).

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