Device for Automatically Clamping the Four Corners of a Tonne Bag Lifting Lugs

Abstract

A device for automatically clamping the four-corner lifting lugs of a ton bag, which comprises a blanking cylinder. An elevating frame is arranged on the outer side of the blanking cylinder. The lower ends of the four corners of the elevating frame are respectively hinged to the upper ends of a clamping lug mechanism. The upper part of the clamping lug mechanism is hinged to the cylinder rod of an external swing cylinder. The clamping lug mechanism comprises a vertically arranged large swing arm. An elevating cylinder is arranged on the upper part of the large swing arm. The cylinder rod end of the elevating cylinder is connected to a transition plate. The lower end of the transition plate is hinged to the upper end of a small swing arm. The small swing arm is a parallel four-bar linkage mechanism. A sliding connection block is arranged in the middle of the small swing arm. The sliding connection block is hinged to the cylinder rod of an internal swing cylinder. A clamping lug cylinder is arranged at the end of the cross bar of the large swing arm. The cylinder rod of the clamping lug cylinder is connected to a horizontal clamping plate. A V-shaped clamping seat is arranged in front of the horizontal clamping plate. A lifting lug collecting assembly is arranged on the lower connecting rod of the small swing arm. A lifting lug collecting cross bar is arranged at the upper end of the lifting lug collecting assembly. The invention can automatically clamp the four-corner lifting lugs of the ton bag, replacing the operation of manually hanging the four-corner lifting lugs.

Description

Technical Field

[0001] The present invention discloses a device for automatically clamping the four - corner lifting lugs of a ton bag, belonging to the field of packaging machinery. Background Art

[0002] For ton - packaging bags with four - corner lifting lugs, currently, the bag - mouth sleeving and the hanging of the four - corner lifting lugs are all carried out manually, and then the feeding and bagging are carried out. With the improvement of the degree of automation and the increasingly urgent need to reduce the number of operators, a device that can automatically hang or clamp the four - corner lifting lugs is required in ton - bag packaging production to achieve the automation of ton - bag packaging. Summary of the Invention

[0003] In order to be able to automatically clamp the four - corner lifting lugs of a ton bag, the present invention provides a device for automatically clamping the four - corner lifting lugs of a ton bag, which includes a blanking cylinder 1. The blanking cylinder 1 is connected to an external frame. An elevating frame 2 is arranged on the outer side of the blanking cylinder 1. The elevating frame 2 can be driven by an external mechanism to move up and down. The lower ends of the four corners of the elevating frame 2 are respectively hinged to the upper ends of a clamping - lug mechanism 4. The inner side of the upper part of the clamping - lug mechanism 4 is hinged to the rod of an out - swing cylinder 3, and the cylinder body of the out - swing cylinder 3 is hinged to the lower end of the elevating frame 2. The four clamping - lug mechanisms 4 can all swing left and right. The clamping - lug mechanism 4 includes a vertically arranged L - shaped large swing arm 41. A vertically arranged lifting cylinder 42 and a guide rod 43 are arranged on the upper part of the large swing arm 41. The rod end of the lifting cylinder 42 and the lower end of the guide rod 43 are both connected to a transition plate 44. The lower end of the transition plate 44 is hinged to the upper end of a small swing arm 45. The small swing arm 45 is a vertically arranged parallel four - link mechanism. The swinging direction of the small swing arm 45 is the same as that of the large swing arm 41. A sliding connection block 4C is arranged in the middle of the small swing arm 45. The sliding connection block 4C is hinged to the rod of a horizontally arranged inner - swing cylinder 46. The cylinder body of the inner - swing cylinder 46 is fixed at the end of the cross - bar of the L - shaped large swing arm 41. A horizontally arranged clamping - lug cylinder 48 is also arranged at the end of the cross - bar of the large swing arm 41. The rod of the clamping - lug cylinder 48 is connected to a horizontal clamping plate 4A. A V - shaped clamping seat 4B is arranged in front of the horizontal clamping plate 4A. The V - shaped clamping seat 4B is fixed on the cross - bar of the large swing arm 41. A horizontally arranged ear - collecting component 49 is arranged on the lower connecting rod of the small swing arm 45. The ear - collecting component 49 is located on the side of the small swing arm 45. A cross - bar 493 for ear - collecting is arranged at the upper end of the ear - collecting component 49. The cross - bar 493 for ear - collecting is located in the gap between the horizontal clamping plate 4A and the V - shaped clamping seat 4B and above the horizontal clamping plate 4A.

[0004] The ear - collecting component 49 includes a lower base 491. Vertical rods 492 are arranged at both ends of the lower base 491. A cross - bar 493 for ear - collecting is connected between the two vertical rods 492. Limiting plates 494 that tilt backward are arranged at both ends of the cross - bar 493 for ear - collecting. The two limiting plates 494 are respectively located on the left and right sides of the horizontal clamping plate 4A.

[0005] On the back of the limiting plate 494 closer to the small swing arm 45 among the two limiting plates 494, a slider 495 is provided. The lifting lug cross bar 493 and the vertical rod 492 are hinged. A support rod 47 is also horizontally provided at the lower part of the small swing arm 45. The backward-inclined slider 495 is always in close contact with the support rod 47.

[0006] The working principle of the present invention is as follows:

[0007] A. The external bag sleeving mechanism sleevs the feeding bag mouth of the ton bag A on the lower end of the blanking cylinder 1 and keeps the upper surface of the ton bag in a horizontal state. At this time, the four lifting lugs B at the four corners of the ton bag are in a hanging state.

[0008] B. The lifting cylinder 42 drives the small swing arm 45 to descend, driving the lifting lug cross bar 493 to descend below the horizontal clamping plate 4A. The outer swing cylinder 3 drives the lifting lug clamping mechanism 4 to swing back to the vertical position. At this time, the lifting lug cross bar 493 is located below the lifting lug B.

[0009] C. The inner swing cylinder 46 drives the small swing arm 45 to swing towards the ton bag A inside, making the lifting lug cross bar 493 located between the lifting lug B and the ton bag A, and making the lifting lug B located between the two limiting plates 494. At the same time, the two limiting plates 494 tilt backward under the action of gravity and lean on the support rod 47, avoiding the collision between the limiting plates 494 and the upper ton bag A during subsequent rising.

[0010] D. The lifting frame 2 rises, driving the four lifting lug clamping mechanisms 4 to rise to a high position. At this time, the lifting lug cross bar 493 is located below the root of the lifting lug B. The inner swing cylinder 46 drives the small swing arm 45 to swing back to the vertical position outside. The lifting cylinder 42 drives the small swing arm 45 to rise and reset. The lifting lug cross bar 493 lifts the lifting lug B upward to between the horizontal clamping plate 4A and the V-shaped clamping seat 4B.

[0011] E. The lifting lug clamping cylinder 48 drives the horizontal clamping plate 4A to extend forward, squeezing and clamping the lifting lug B in the V-shaped groove of the V-shaped clamping seat 4B, and clamping the lifting lug B by using friction, so that the four-corner lifting lugs B can bear the weight of the ton bag A filled with materials.

[0012] F. After the upper feeding mechanism loads materials into the ton bag A, the lifting frame 2 descends to a low position, places the full bag on the conveyor below, then the lifting lug clamping cylinder 48 retracts to release the lifting lug B. The outer swing cylinder 3 drives the lifting lug clamping mechanism 4 to swing outward. The lifting frame 2 rises and resets, and the lifting lug B completely disengages from the lifting lug clamping mechanism 4.

[0013] The beneficial effects of the present invention are as follows:

[0014] The lifting and swinging ear receiving crossbar 493 is used to organize and push the lifting lugs B at the four corners of the ton bag A between the horizontal clamping plate 4A and the V-shaped clamping seat 4B, and the horizontal clamping plate 4A is used to squeeze and clamp the lifting lug B in the V-shaped groove of the V-shaped clamping seat 4B, realizing the function of automatically clamping the lifting lugs at the four corners of the ton bag, replacing the operation of manually hanging the lifting lugs at the four corners, and providing a feasible technical solution for realizing the automatic packaging of the four-corner lifting lug type ton bag. Brief Description of the Drawings

[0015] Figure 1 is the three-dimensional axonometric view of the present invention.

[0016] Figure 2 is the front view of the present invention.

[0017] Figure 3 is the side view of the present invention.

[0018] Figure 4 is the left-side three-dimensional axonometric view of the ear clamping mechanism 4.

[0019] Figure 5 is the front view of the ear clamping mechanism 4.

[0020] Figure 6 is the right-side three-dimensional axonometric view of the ear clamping mechanism 4.

[0021] Figure 7 is the structural schematic diagram of the ear receiving assembly 49.

[0022] Figure 8 is the schematic diagram of the working state after bagging.

[0023] Figure 9 is the schematic diagram of the working state after the small swing arm 45 swings inward.

[0024] Figure 10 is the schematic diagram of the working state when clamping the lifting lug B.

[0025] Figure 11 is Figure 10 the partial enlarged view I in Detailed Description of the Invention

[0026] For the detailed implementation of the present invention, please refer to Figures 1 to 11, a device for automatically clamping the four corner lifting ears of a ton bag, it includes a blanking barrel 1, the blanking barrel 1 is connected to the external frame, and a lifting frame 2 is provided on the outside of the blanking barrel 1, and the lifting frame 2 is driven by an external mechanism to lift up and down, and the lower ends of the four corners of the lifting frame 2 are hinged to the upper end of a clamping ear mechanism 4, and the upper inner side of the clamping ear mechanism 4 is hinged to the cylinder rod of the outer swing cylinder 3, and the cylinder body of the outer swing cylinder 3 is hinged to the lower end of the lifting frame 2, and the four clamping ear mechanisms 4 can swing left and right. The clamping ear mechanism 4 includes a vertically arranged L-shaped large swing arm 41, and the upper part of the large swing arm 41 is provided with a vertically arranged lifting cylinder 42 and a guide rod 43. The lower ends of the cylinder rod end of the lifting cylinder 42 and the guide rod 43 are connected to the transition plate 44, and the lower end of the transition plate 44 is hinged to the upper end of the small swing arm 45. The small swing arm 45 is a vertically arranged parallel four-bar linkage. The swinging directions are consistent. A sliding connection block 4C is provided in the middle of the small swing arm 45. The sliding connection block 4C is hinged to the cylinder rod of the horizontally arranged inner swing cylinder 46. The cylinder body of the inner swing cylinder 46 is fixed to the end of the cross bar of the L-shaped large swing arm 41. A support rod 47 is also provided horizontally at the lower part of the small swing arm 45. A horizontally arranged clamping ear cylinder 48 is also provided at the end of the cross bar of the large swing arm 41. The cylinder rod of the clamping ear cylinder 48 is connected to the horizontal splint 4A. A V-shaped clamp seat 4B is provided in front of the horizontal splint 4A. The V-shaped clamp seat 4B is fixed on the cross bar of the large swing arm 41. A horizontally arranged receiving ear assembly 49 is provided on the lower end connecting rod of the small swing arm 45. The receiving ear assembly 49 is located on the side of the small swing arm 45. A receiving ear cross bar 493 is provided on the upper end of the receiving ear assembly 49. The receiving ear cross bar 493 is located in the gap between the horizontal splint 4A and the V-shaped clamp seat 4B and is located above the horizontal splint 4A.

[0027] The above-mentioned lifting ear assembly 49 includes a lower base 491, and both ends of the lower base 491 are provided with vertical poles 492, and a lifting ear cross bar 493 is connected between the two vertical poles 492. The lifting ear cross bar 493 and the vertical poles 492 are hinged, and both ends of the lifting ear cross bar 493 are provided with backward-inclined limit plates 494, and the two limit plates 494 are respectively located on the left and right sides of the horizontal splint 4A.

[0028] A slider 495 is provided on the back of the limiting plate 494 close to the small swing arm 45 of the two limiting plates 494 , and the slider 495 tilted backward is always close to the support rod 47 .

Claims

1. An automatic clamping device for the four corner lifting lugs of a ton bag, which comprises a blanking cylinder (1). The blanking cylinder (1) is connected to an external frame, and a lifting frame (2) is arranged on the outer side of the blanking cylinder (1). The lifting frame (2) can be driven by an external mechanism to move up and down. It is characterized in that: The lower ends of the four corners of the lifting frame (2) are all hinged to the upper ends of a clamping lifting lug mechanism (4). The inner side of the upper part of the clamping lifting lug mechanism (4) is hinged to the cylinder rod of the swing-out cylinder (3). The cylinder body of the swing-out cylinder (3) is hinged to the lower end of the lifting frame (2). The four clamping lifting lug mechanisms (4) can all swing left and right. The clamping lifting lug mechanism (4) includes a vertically arranged L-shaped large swing arm (41). A vertically arranged lifting cylinder (42) and a guide rod (43) are provided on the upper part of the large swing arm (41). The cylinder rod end of the lifting cylinder (42) and the lower end of the guide rod (43) are both connected to a transition plate (44). The lower end of the transition plate (44) is hinged to the upper end of a small swing arm (45). The small swing arm (45) is a vertically arranged parallel four-bar linkage mechanism. The swinging direction of the small swing arm (45) is the same as that of the large swing arm (41). A sliding connection block (4C) is provided in the middle of the small swing arm (45). The sliding connection block (4C) is hinged to the cylinder rod of a horizontally arranged inner swing cylinder (46). The cylinder body of the inner swing cylinder (46) is fixed at the end of the cross bar of the L-shaped large swing arm (41). A horizontally arranged clamping lifting lug cylinder (48) is also provided at the end of the cross bar of the large swing arm (41). The cylinder rod of the clamping lifting lug cylinder (48) is connected to a horizontal clamping plate (4A). A V-shaped clamping seat (4B) is provided in front of the horizontal clamping plate (4A). The V-shaped clamping seat (4B) is fixed on the cross bar of the large swing arm (41). A horizontally arranged lifting lug receiving assembly (49) is provided on the lower connecting rod of the small swing arm (45). The lifting lug receiving assembly (49) is located on the side of the small swing arm (45). A lifting lug receiving cross bar (493) is provided at the upper end of the lifting lug receiving assembly (49). The lifting lug receiving cross bar (493) is located in the gap between the horizontal clamping plate (4A) and the V-shaped clamping seat (4B) and above the horizontal clamping plate (4A).

2. The device for automatically clamping the four corner lifting lugs of a ton bag according to claim 1, characterized in that: The lifting lug receiving assembly (49) includes a lower base (491). Vertical rods (492) are provided at both ends of the lower base (491). A lifting lug receiving cross bar (493) is connected between the two vertical rods (492). Limiting plates (494) that slope backward are provided at both ends of the lifting lug receiving cross bar (493). The two limiting plates (494) are respectively located on the left and right sides of the horizontal clamping plate (4A).

3. The device for automatically clamping the four corner lifting lugs of the ton bag according to claim 2, characterized in that: A slider (495) is provided on the back of the limiting plate (494) that is closer to the small swing arm (45) among the two limiting plates (494). The lifting lug receiving cross bar (493) is hinged to the vertical rod (492). A support rod (47) is also horizontally provided at the lower part of the small swing arm (45). The backward-sloping slider (495) always abuts tightly against the support rod (47).

Images