Ton bag opening grabbing and clamping structure

Abstract

The invention relates to a grabbing and clamping structure for a ton bag opening, and belongs to the field of ton bag packaging. According to the technical scheme, the bag opening device comprises a bag opening frame, a swing frame, two grippers, a U-shaped frame and a bag opening suction cup. The bag opening frame is arranged in the middle of the U-shaped frame, a moving mechanism is arranged between the bag opening frame and the U-shaped frame, the bag opening suction cup lifting air cylinder is arranged on the inner side of the U-shaped frame, and the bag opening suction cup is arranged at the bottom of the bag opening suction cup lifting air cylinder; a hinged shaft is arranged at the front end of the bag opening frame, a swing frame is hinged to the hinged shaft, a pair of hinged lug plates is arranged on the lower portion of the rear portion of the bag opening frame and hinged to a cylinder body of an overturning air cylinder, and the front end of an extending rod of the overturning air cylinder is hinged to the swing frame. The bag mouth suction cup lifting air cylinder drives the bag mouth suction cup to descend to suck the bag mouth, the bag mouth suction cup ascends after sucking the bag mouth, the lower end of the bag mouth naturally droops, the bag mouth is opened, and therefore the bag mouth supporting plate can be conveniently fed into the bag mouth.

Description

Technical Field

[0001] The invention relates to a ton bag mouth grasping and clamping structure, belonging to the ton bag packaging field. Background Art

[0002] With the continuous advancement of science and technology in modern society, the rapid arrival of industrialization and the intelligent era, intelligent production has entered a new production field. When loading materials, ton bags are usually opened manually, and then the materials are bagged. This will not only affect the unloading efficiency, but also greatly harm the health of operators in some special environments such as toxic, flammable and highly corrosive, high dust and places where people are not easy to contact. The automated ton bag mouth gripping structure can not only reduce the production cost of the enterprise, but also is another major step forward in the technological innovation of the enterprise in the future.

[0003] The existing opening tensioning device of the ton bag cannot flexibly flip the ton bag, and cannot adjust the device according to the height of the ton bag to clamp the ton bag stably, resulting in the packaging bag opening not meeting the required requirements. Summary of the invention

[0004] In view of the above problems, the present invention proposes a ton bag mouth grasping and clamping structure to solve the above-mentioned problem of grasping and turning the ton bag mouth.

[0005] To achieve the above object, the technical solution adopted by the present invention is: A ton bag bag mouth gripping structure, characterized in that it comprises a bag mouth frame, a swing frame, two grippers, a U-shaped frame and a bag mouth suction cup; the bag mouth frame is arranged in the middle of the U-shaped frame, the bag mouth frame is arranged between the U-shaped frames and a moving mechanism is provided, a bag mouth suction cup lifting cylinder is provided inside the U-shaped frame, and the bag mouth suction cup is provided at the bottom of the bag mouth suction cup lifting cylinder; The front end of the bag mouth frame is provided with a hinge shaft, the hinge shaft is hingedly installed with the swing frame, and the rear lower part of the bag mouth frame is provided with a pair of hinged ear plates, which are hingedly installed with the swing frame. The ear plate is hingedly connected to the cylinder body of the flip cylinder, and the front end of the extension rod of the flip cylinder is hingedly connected to the swing frame; The swing frame is provided with an articulated arm, a flip arm and a gripper frame, the articulated arm is at the top, the flip arm extends backward, the articulated arm is hinged to the hinge shaft at the front end of the bag mouth frame, the flip arm is downwardly connected to the extension rod of the flip cylinder, and two grippers are arranged on the gripper frame. The two grippers are provided with a movable cylinder to adjust the distance. The gripper includes a fixed part and a movable part. The upper part of the movable part is hinged to the side of the fixed part, the movable part is provided with a movable cylinder, the extension rod of the movable cylinder is connected to the middle or lower part of the movable part, and the cylinder body is hingedly connected to the fixed part.

[0006] According to the ton bag mouth gripping structure, the tops of the two grippers and the moving cylinder are arranged in a gripper frame, the gripper frame is provided with a sliding structure to install the two grippers, and the cylinder body and the extension rod of the moving cylinder are respectively connected to the two grippers.

[0007] According to the ton bag mouth gripping structure, the sliding structure is composed of two groups, which are symmetrically arranged in the gripping frame. The sliding structure is provided with two pairs of vertically symmetrical rollers and movable shafts. A movable shaft is provided between the upper and lower rollers. Both ends of the movable shaft are connected to a movable seat. The lower part of the movable seat fixes the two grippers. The cylinder body and the extension rod of the movable cylinder are respectively connected to the two movable seats.

[0008] According to the ton bag mouth gripping structure, the fixed parts of the two grippers form a flaring structure, the fixed part is provided with a recess, the movable part is provided with a protrusion, and the protrusion of the movable part is embedded in the recess of the fixed part to clamp the bag mouth of the ton bag.

[0009] According to the ton bag mouth gripping structure, the movable part is provided with a bag mouth supporting plate, and the bag mouth supporting plates of the two movable parts are embedded in the bag mouth of the ton bag.

[0010] According to the ton bag mouth gripping structure, a partition is provided in the middle of the gripping frame to separate the moving mechanism and the moving seat; a limit block is provided on the inner side of the moving shaft near the partition to limit the moving shaft from being separated from the upper and lower rollers; the gripping frame is a rectangular cavity with a partition provided inside to divide the left and right parts; the moving seat is a rectangular frame structure with a pair of parallel moving shafts provided inside; the lower part of the gripping frame is a slot with a slot width smaller than the width of the moving seat; the fixing part is provided at the lower part of the moving seat, and the fixing part passes through the slot downward, so the cylinder body of the movable cylinder is hingedly connected to the lower part of the moving seat.

[0011] According to the ton bag bag mouth clamping structure, a guide structure is provided in the bag mouth suction cup lifting cylinder, and the piston rod end of the bag mouth suction cup lifting cylinder is connected to the bag mouth suction cup to drive the bag mouth suction cup to move up and down.

[0012] According to the ton bag mouth clamping structure, the moving mechanism includes an embedded pushing track arranged in a U-shaped frame, a pair of pushing wheels are arranged on both sides of the bag mouth, the pushing wheels are in the pushing track, the protruding end of the pushing cylinder is connected to the bag mouth frame, and the cylinder body of the pushing cylinder is fixed on the U-shape.

[0013] The beneficial effects achieved by this device are: 1. The bag mouth suction cup lifting cylinder drives the bag mouth suction cup to descend and suck the bag mouth. After sucking the bag mouth, the bag mouth suction cup rises and the lower end of the bag mouth The bag opening is opened naturally, which makes it easy to put the bag opening support plate into the bag opening.

[0014] 2. The ton bag mouth gripping device can realize flexible adjustment of the height of the ton bag through the bagging gripper moving cylinder and the bagging gripper lifting cylinder, thereby improving the flexibility of the device.

[0015] 3. This device uses a bag grabber flip cylinder to flip the bag, reducing the use of electrical equipment and having high safety; At the same time, the efficiency of filling ton bags is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural diagram of a ton bag opening tensioning device of the present invention. Figure 2 This is a left view of a ton bag opening tensioning device. Figure 3 A top view of a ton bag opening tensioning device.

[0017] Figure 4 A side view of a grab frame for ton bags.

[0018] Figure 5 The front view of a grab frame for a ton bag.

[0019] Figure 6 This is a diagram of the flipping state of a grab frame for a ton bag.

[0020] 1. Bag mouth frame; 2. Swing frame; 3. Grip; 4. Flip cylinder; 5. Extension rod; 6. Moving cylinder; 7. Fixed part; 8. Movable part; 9. Movable cylinder; 10. Articulated arm; 11. Flip arm; 12. Grip frame; 13. Roller; 14. Moving shaft; 15. Articulated ear plate; 16. U-shaped frame; 17. Bag mouth suction cup; 18. Bag mouth suction cup lifting cylinder; 19. Partition; 20. Bag mouth support plate; 21 Moving seat; 22. Push cylinder; 23. Push track; 24. Push wheel. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0022] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "both sides", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0023] The specific contents of the present invention are further described as follows: The present invention comprises a bag opening frame 1, a swing frame 2, two grippers 3, a U-shaped frame 16 and a bag opening suction cup 17; the bag opening suction cup 17 sucks one side of the bag opening of the ton bag to open it, and then the bag opening frame 1 moves relative to the bag opening of the ton bag in the U-shaped frame 16, two symmetrical grippers are arranged on the swing frame 2 for grabbing the bag opening of the ton bag, and the bag opening frame swings the swing frame vertically to carry out the next step of filling the ton bag.

[0024] refer to Figure 1 A hinge shaft is provided at the front end of the bag mouth frame 1, and a swing frame 2 is hingedly installed on the hinge shaft. Two pairs of hinged ear plates 15 are provided at the lower part of the rear end of the bag mouth frame 1, and the hinged ear plates 15 are hingedly connected to the cylinder body of the flip cylinder 4; the swing frame 2 is provided with an hinged arm 10, a flip arm 11 and a gripper frame 12, the hinged arm 10 is at the top, the flip arm 11 extends backward, and the gripper frame 12 is provided with two grippers, wherein the hinged arm 10 is hinged to the front end hinge shaft of the bag mouth frame 1, and the flip arm 11 is downwardly connected to the end of the extension rod 5 of the flip cylinder 4.

[0025] The gripper frame 12 of the device is composed of two cavities, each cavity is provided with a sliding structure, which is symmetrically arranged in the gripper frame 12. The sliding structure is provided with two pairs of rollers 13 and movable shafts 14 which are symmetrical up and down. The movable shaft 14 is provided between the upper and lower rollers 13. The two ends of the movable shaft 14 are connected to the movable seat 28. The lower part of the movable seat 28 is fixed with the two grippers 3. The cylinder body of the movable cylinder 6 and the extension rod 5 are respectively connected to the two movable seats 28. The tops of the two grippers 3 are arranged at the lower part of the movable seat 28.

[0026] Specifically, a partition 30 is provided in the middle of the gripper frame 12 to separate the moving mechanism and the moving seat 28; a limit block is provided on the inner side of the moving shaft 14 near the partition 30 to limit the moving shaft 14 from being separated from the upper and lower rollers 13. The gripper frame 12 is a rectangular cavity, and a partition 30 is provided inside to divide the left and right parts. The moving seat 28 is a rectangular frame structure, and a pair of parallel moving shafts 14 are provided inside. The lower part of the gripper frame 12 is a slot, and the slot width is smaller than the width of the moving seat 28.

[0027] The two grippers 3 include a fixed part 7 and a movable part 8. The upper part of the movable part 8 is hinged to the side of the fixed part 7. The movable part 8 is provided with a movable cylinder 9. The extension rod 5 of the movable cylinder 9 is connected to the middle or lower part of the movable part 8. The cylinder body is hingedly connected to the fixed part 7. The fixed part 7 is arranged at the lower part of the movable seat 28. The fixed part 7 passes through the slot 32 downward, so the cylinder body of the movable cylinder 9 is hingedly connected to the lower part of the movable seat 28. The movable part 8 is provided with a bag opening support plate 22. The bag opening support plates 22 of the two movable parts 8 are embedded in the bag opening of the ton bag to open the bag opening of the ton bag and open and fix it.

[0028] As an implementation scheme of the present invention, the inner end faces of the two parallel structures of the U-shaped frame 16 are hollow structure embedded push rails, and pairs of push wheels are set on both sides of the bag mouth frame, and the push wheels are in the push rails. The extended end of the push cylinder is connected to the bag mouth frame, and the cylinder body of the push cylinder is fixed on the U-shaped. The front end of the bag mouth suction cup lifting cylinder 19 is placed on the front end of the U-shaped frame 16, and two guide shafts are set on both sides of the bag mouth suction cup lifting cylinder 19. The two guide shafts are symmetrical, and the front end of the piston rod of the bag mouth suction cup lifting cylinder 19 is connected to the bottom of the guide shaft, and the bag mouth suction cup 17.

[0029] In this example, the vacuum pump works to transfer negative pressure to the bag mouth suction cup 17, which then generates suction force to adsorb the upper end surface of the ton bag, and the bag mouth suction cup lifting cylinder 19 rises to open the bag mouth of the ton bag. Then the push cylinder pulls the bag mouth frame backwards, and the bag mouth support plate is inserted into the bag mouth of the ton bag.

[0030] The movable cylinder 9 pushes the movable plate to move toward the fixed part, expands the two bag opening support plates outward, and tightens the bag opening of the ton bag to achieve fixation.

[0031] After the mouth of the ton bag is fixed, the suction cup on the mouth of the bag releases the ton bag, and the flipping cylinder works to push the swing frame and the gripper upward to flip the mouth of the ton bag upward for the next step of transfer and filling.

[0032] The workflow of the present invention is: 1) First, the push cylinder pushes the bag opening frame forward, and the bag opening suction cup lifting cylinder (19) drives the bag opening suction cup to descend to above the bag opening of the ton bag, and the bag opening suction cup works to suck the bag opening of the ton bag, and the bag opening suction cup lifting cylinder (19) drives the bag opening suction cup to move upward, and the bag opening of the ton bag is opened; 2) The upper bag opening support plate of the movable part of the gripper moves closer under the action of the movable cylinder, and at the same time, the two grippers move closer under the drive of the movable cylinder. The push cylinder pushes the bag opening frame backwards, and the bag opening support plate is inserted into the bag opening of the ton bag; 3) The movable cylinder moves the outer support of the bag opening support plate of the movable part, and at the same time, the movable cylinder pushes the two grippers away, and the bag opening support plate opens and fixes the bag opening of the ton bag; 4) The bag mouth suction cup is driven up by the bag mouth suction cup lifting cylinder, and the bag mouth suction cup loses the negative pressure suction and separates from the ton bag. The push cylinder pushes the bag mouth frame forward and moves it to the filling position or ton bag transfer position; 5) The flip cylinder pushes the hinged arm of the swing frame, and the flip arm flips with the hinge axis at the front end of the bag mouth frame as the axis. The gripper then turns the bag mouth of the ton bag from horizontal to upward, and fills or transfers the ton bag at this position, and then the bag mouth and the gripper return to the original path; 6) Follow steps 1)-5) to carry out uninterrupted grabbing and turning of the bag mouth of the ton bag.

[0033] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A ton bag mouth gripping structure, characterized in that: It comprises a bag opening frame (1), a swing frame (2), two grippers (3), a U-shaped frame (16) and a bag opening suction cup (17); The bag opening frame is arranged in the middle of the U-shaped frame (16), and a moving mechanism is arranged between the U-shaped frames (16). A bag opening suction cup lifting cylinder is arranged inside the U-shaped frame (16), and the bag opening suction cup is arranged at the bottom of the bag opening suction cup lifting cylinder; A hinge shaft is provided at the front end of the bag mouth frame (1), and the hinge shaft is hingedly mounted on the swing frame (2). A pair of hinged ear plates (15) are provided at the rear lower part of the bag mouth frame (1), and the hinged ear plates (15) are hingedly connected to the cylinder body of the flip cylinder (4). The front end of the extension rod of the flip cylinder (4) is hingedly connected to the swing frame. The swing frame (2) is provided with an articulated arm (10), a flip arm (11) and a gripping frame (12), wherein the articulated arm (10) is located at the top, the flip arm (11) extends backward, the articulated arm (10) is hinged to a hinge shaft at the front end of the bag mouth frame (1), and the flip arm (11) is connected downward to an extension rod (5) of a flip cylinder (4). Two grippers (3) are arranged on a gripper frame (12). The two grippers (3) are provided with a movable cylinder (6) for adjusting the distance. The grippers (3) include a fixed portion (7) and a movable portion (8). The upper portion of the movable portion (8) is hinged to the side of the fixed portion (7). The movable portion (8) is provided with a movable cylinder (9). The extension rod (5) of the movable cylinder (9) is connected to the middle or lower portion of the movable portion (8). The cylinder body is hinged to the fixed portion (7). According to the ton bag mouth gripping structure of claim 1, it is characterized in that the tops of the two grippers (3) and the movable cylinder (6) are arranged in a gripper frame (12), the gripper frame (12) is provided with a sliding structure for mounting the two grippers (3), and the cylinder body and the extension rod (5) of the movable cylinder (6) are respectively connected to the two grippers (3).

2. According to claim 3, the ton bag mouth gripping structure is characterized in that the sliding The structure comprises two groups, which are symmetrically arranged in a gripper frame (12). The sliding structure is provided with two pairs of rollers (13) and movable shafts (14) which are symmetrical in upper and lower directions. A movable shaft (14) is provided between the upper and lower rollers (13). Both ends of the movable shaft (14) are connected to a movable seat (28). The lower part of the movable seat (28) fixes the two grippers (3). The cylinder body of the movable cylinder (6) and the extension rod (5) are respectively connected to the two movable seats (28).

3. The ton bag mouth gripping structure according to claim 4 is characterized in that: The fixed parts (7) of the two grippers (3) form a flared structure, the fixed part (7) is provided with a recess, the movable part (8) is provided with a protrusion, and the protrusion of the movable part (8) is embedded in the recess of the fixed part (7) to clamp the bag mouth of the ton bag.

4. The ton bag mouth gripping structure according to claim 5 is characterized in that: The movable part (8) is provided with a bag opening support plate (22), and the bag opening support plates (22) of the two movable parts (8) are embedded in the bag opening of the ton bag.

5. The ton bag mouth gripping structure according to claim 4 is characterized in that: A partition (30) is provided in the middle of the gripper frame (12) to separate the moving mechanism and the moving seat (28); a limit block is provided on the inner side of the moving shaft (14) near the partition (30) to limit the moving shaft (14) from being separated from the upper and lower rollers (13); the gripper frame (12) is a rectangular cavity, and a partition (30) is provided inside to divide the left and right parts; the moving seat (28) is a rectangular frame structure, and a pair of parallel moving shafts (14) are provided inside; the lower part of the gripper frame (12) is a slot, and the slot width is smaller than the width of the moving seat (28); the fixing part (7) is provided at the lower part of the moving seat (28), and the fixing part (7) passes through the slot (32) downward, so that the cylinder body of the movable cylinder (9) is hingedly connected to the lower part of the moving seat (28).

6. The ton bag mouth gripping structure according to claim 1 is characterized in that: A guide structure is provided in the bag opening suction cup lifting cylinder (19); the end of the piston rod of the bag opening suction cup lifting cylinder (19) is connected to the bag opening suction cup (17), driving the bag opening suction cup (17) to move up and down.

7. The ton bag mouth gripping structure according to claim 1 is characterized in that: The moving mechanism comprises an embedded push track arranged in the U-shaped frame, a pair of push wheels are arranged on both sides of the bag opening, the push wheels are in the push track, the extended end of the push cylinder is connected to the bag opening frame, and the cylinder body of the push cylinder is fixed on the U-shaped frame.

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