Chuck for bagged materials

Abstract

A clamping head for bagged materials comprises an upper plate, a hydraulic cylinder is installed on the upper plate, a plurality of side plates are installed at the two ends of the upper plate respectively, a lower plate is installed at the lower ends of the side plates, at least four pairs of guide holes are formed in the lower plate, a concave plate is formed in the middle of the lower plate, moving rods are arranged in the guide holes in a penetrating mode, and an upper moving plate is installed at the upper ends of each pair of moving rods. An inner pushing vertical plate is arranged on the upper movable plate, an inclined hole is formed in the inner pushing vertical plate, the upper end of the inclined hole obliquely extends inwards, a clamping arm is installed at the lower end of each pair of movable rods, and the lower end of each clamping arm is bent inwards to be provided with a clamping jaw. A movable plate is installed at the lower end of the hydraulic cylinder, a plurality of pairs of push-pull arms are installed on the movable plate, push-pull rods are arranged at the lower ends of the push-pull arms, the push-pull rods penetrate through the inclined holes, and the clamp is wide in application scene range.

Description

Technical Field

[0001] The utility model relates to the technical field of bagged material transfer, in particular to a chuck for bagged materials. Background Art

[0002] When bagged materials are being stacked or loaded onto trucks, automatic transfer clamps are currently used to transfer the bagged materials to the stacking area for stacking or loading. However, when clamping bagged materials, current clamps control the rotation of the clamping jaws through a control system such as a cylinder, causing the jaws to open or close. This clamping method is called an embracing clamp, and during the clamping process, it cannot constrain both ends of the bagged materials, making it impossible to accurately place the bagged materials. This is especially true when stacking bagged materials, as inaccurate placement can easily lead to safety accidents. Furthermore, the rotating clamps require a large range of motion when clamping bagged materials, making them inconvenient to use in some scenarios. Utility Model Content

[0003] The utility model provides a chuck for bagged materials to address the deficiencies of the above-mentioned prior art, solves the problem that the existing transfer clamp has a small range of applicable scenarios and cannot limit the two ends of the bagged materials during transfer, thereby preventing the bagged materials from being accurately stacked, and has strong practicality.

[0004] In order to achieve the purpose of this utility model, the following technologies are proposed:

[0005] A chuck for bagged materials comprises an upper plate, a hydraulic cylinder mounted on the upper plate, and multiple side plates mounted at each end of the upper plate. A lower plate is mounted at the lower end of each side plate, the lower plate having at least four pairs of guide holes. A concave plate is formed in the middle of the lower plate, and movable rods are inserted into the guide holes. An upper movable plate is mounted on the upper end of each pair of movable rods, an inward-pushing vertical plate is provided on the upper movable plate, and an inclined hole is provided on the inward-slanting upper end of each inclined hole. A clamping arm is mounted on the lower end of each pair of movable rods, and the lower end of the clamping arm is bent inwardly and provided with a clamping claw. A movable plate is mounted on the lower end of the hydraulic cylinder, and multiple pairs of push-pull arms are mounted on the movable plate. The push-pull arms have push-pull rods at their lower ends, and the push-pull rods are inserted into the inclined holes. The hydraulic cylinder drives the moving rod, which acts on the inclined hole as it moves, bringing the clamping arms closer together and allowing the jaws to grip the bagged material. This clamping method features linear movement of the jaws, allowing the bagged material to be gripped with a relatively short movement distance, thus expanding the clamp's application scenarios.

[0006] Furthermore, in order to facilitate the clamping claws to pass through the lower side of the packaging bag, the clamping claws are provided in a wedge-shaped structure.

[0007] Furthermore, in order to improve the stability and reliability of the movable plate movement, a fixed vertical plate is installed between the concave plate and the upper plate. A pair of vertical holes are opened on the fixed vertical plate, and a guide rod is passed through the vertical holes. The inner ends of the guide rod are arranged at both ends of the movable plate.

[0008] Furthermore, in order to improve the safety and reliability during transfer, multiple vertical rods are passed through the upper plate, the vertical rods are passed through the movable plate, the lower ends of the vertical rods are passed through the lower plate, a middle ring is provided on the vertical rods, and first springs are provided on the upper and lower sides of the middle ring respectively. The upper end of the first spring located above acts on the movable plate, and the lower end of the first spring located below acts on the lower plate. A lower pressure plate is provided at the lower end of the vertical rod, and the lower pressure plate is located below the lower plate.

[0009] Furthermore, in order to limit the ends of the bagged materials and enable accurate transfer and stacking of the bagged materials, end blocks are provided at both ends of the lower pressure plate, and a transverse movable rod is passed through the end blocks. A limiting end plate is provided at the outer end of the transverse movable rod, and the lower end of the limiting end plate extends outward at an angle. A T-shaped seat is provided at the inner end of the transverse movable rod, and a second spring is sleeved on the inner end of the transverse movable rod. The second spring is located between the end block and the T-shaped seat.

[0010] Furthermore, in order to enable the limiting end plate to move synchronously outward or inward when limiting, a connecting plate is hinged at the inner end of the T-shaped seat, and a movable seat is hinged at the inner end of the connecting plate. A pair of spring pins is passed through the movable seat, and a third spring is sleeved on the lower end of the spring pin. The third spring is located on the lower side of the movable seat.

[0011] The advantages of the above technical solution are:

[0012] The clamp of the utility model has a wide range of applicable scenarios and can limit the two ends of the bagged materials to ensure accuracy and safety during transfer. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in further detail below with reference to the accompanying drawings.

[0014] Figure 1 Shows a three-dimensional structure of one embodiment Figure 1 .

[0015] Figure 2 An enlarged view of point A is shown.

[0016] Figure 3 Shows a three-dimensional structure of one embodiment Figure 2 . DETAILED DESCRIPTION

[0017] like Figures 1 to 3As shown, a chuck for bagged materials is arranged on a six-axis robot, which specifically includes an upper plate 1, a hydraulic cylinder 3 is installed on the upper plate 1, and multiple side plates 10 are installed at both ends of the upper plate 1, and the lower end of the side plate 10 is installed with a lower plate 11, and at least four pairs of guide holes 12 are opened on the lower plate 11. A concave plate 35 is formed at the middle position of the lower plate 11, and a moving rod 2 is passed through the guide hole 12. An upper movable plate 22 is installed at the upper end of each pair of moving rods 2, and an inward-pushing vertical plate 23 is provided on the upper movable plate 22. An inclined hole 24 is opened on the inward-pushing vertical plate 23, and the upper end of the inclined hole 24 extends inwardly. A clamping arm 20 is installed at the lower end of each pair of moving rods 2, and the lower end of the clamping arm 20 is bent inwardly to provide a clamping claw 21, and the clamping claw 21 has a wedge-shaped structure.

[0018] A movable plate 30 is installed at the lower end of the hydraulic cylinder 3, and multiple pairs of push-pull arms 31 are installed on the movable plate 30. The lower end of the push-pull arm 31 is provided with a push-pull rod 32, and the push-pull rod 32 passes through the inclined hole 24. A fixed vertical plate 34 is installed between the concave plate 35 and the upper plate 1. A pair of vertical holes 36 are opened on the fixed vertical plate 34, and a guide rod 33 is passed through the vertical hole 36. The inner end of the guide rod 33 is provided at both ends of the movable plate 30.

[0019] A plurality of vertical rods 4 are provided on the upper plate 1. The vertical rods 4 are provided on the movable plate 30. The lower ends of the vertical rods 4 are provided on the lower plate 11. A middle ring 40 is provided on the vertical rods 4. A first spring 41 is provided on the upper and lower sides of the middle ring 40. The upper end of the first spring 41 located at the upper end acts on the movable plate 30, and the lower end of the first spring 41 located at the lower end acts on the lower plate 11. A lower pressure plate 42 is provided on the lower end of the vertical rods 4. The lower pressure plate 42 is located below the lower plate 11. End blocks 43 are provided at both ends of the lower pressure plate 42. A transverse movable rod 44 is provided on the end blocks 43. The outer end of the transverse movable rod 44 is provided with a limiting end plate 45. The lower end of the limiting end plate 45 extends outwardly at an angle. The inner end of the transverse movable rod 44 is provided with a T-shaped seat 47. The inner end of the transverse movable rod 44 is sleeved with a second spring 48. The second spring 48 is located between the end block 43 and the T-shaped seat 47. The inner end of the T-shaped seat 47 is hinged with a connecting plate 49, and the inner end of the connecting plate 49 is hinged with a moving seat 50. The moving seat 50 is provided with a pair of spring pins 51, and the lower end of the spring pins 51 is sleeved with a third spring 52, which is located on the lower side of the moving seat 50.

[0020] When clamping the bagged material in this embodiment, the bagged material is moved to the top of the bagged material to be transferred by the six-axis robot with the clamping head, and when the clamping jaws 21 are in the open state, the lower pressure plate 42 is tightly attached to the upper side of the bagged material.

[0021] When the lower pressing plate 42 is in close contact with the bagged material, the limiting end plates 45 are supported by the ends of the bagged material and are opened synchronously. During the opening process, the second spring 48 is compressed, and the angle between the connecting plate 49 and the lower pressing plate 42 decreases. Simultaneously, the movable seat 50 moves downward, and the third spring 52 is also compressed. At this point, the limiting end plates 45 have completed the positioning of the two ends of the bagged material.

[0022] Then the hydraulic cylinder 3 is started, and the movable plate 30 moves downward under the drive of the hydraulic cylinder 3. The movement of the movable plate 30 will cause the push-pull rod 32 to act on the inclined hole 24, thereby closing the clamping arm 20 and the clamping jaw 21. When closing, the clamping jaw 21 will support the lower side of the bagged material, and at the same time, the clamping arm 20 limits the two sides of the bagged material. In this process, the lower pressure plate 42 will always be tightly attached to the bagged material under the action of the first spring 41, and then the bagged material transfer operation is performed by the six-axis robot.

[0023] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Therefore, if such modifications and variations fall within the scope of the claims and their equivalents, the present invention is intended to include such modifications and variations.

Claims

1. A chuck for bagged materials, characterized in that: The hydraulic cylinder (3) is mounted on the upper plate (1), a plurality of side plates (10) are mounted on both ends of the upper plate (1), a lower plate (11) is mounted on the lower end of the side plate (10), at least four pairs of guide holes (12) are formed on the lower plate (11), and a concave plate (35) is formed at the middle position of the lower plate (11); A moving rod (2) is passed through the guide hole (12), an upper moving plate (22) is installed on the upper end of each pair of moving rods (2), an inner push vertical plate (23) is provided on the upper moving plate (22), an inclined hole (24) is opened on the inner push vertical plate (23), the upper end of the inclined hole (24) extends inwardly, and a clamping arm (20) is installed on the lower end of each pair of moving rods (2), and the lower end of the clamping arm (20) is bent inwardly and provided with a clamping claw (21); A movable plate (30) is installed at the lower end of the hydraulic cylinder (3), and a plurality of pairs of push-pull arms (31) are installed on the movable plate (30). The lower ends of the push-pull arms (31) are provided with push-pull rods (32), which are inserted into the inclined holes (24).

2. The chuck for bagged materials according to claim 1, characterized in that: The clamping jaw (21) has a wedge-shaped structure.

3. The chuck for bagged materials according to claim 1, characterized in that: A fixed vertical plate (34) is installed between the concave plate (35) and the upper plate (1), and a pair of vertical holes (36) are opened on the fixed vertical plate (34). A guide rod (33) is inserted into the vertical hole (36), and the inner end of the guide rod (33) is arranged at both ends of the movable plate (30).

4. The chuck for bagged materials according to claim 1, characterized in that: A plurality of vertical rods (4) are provided on the upper plate (1), the vertical rods (4) are provided on the movable plate (30), the lower ends of the vertical rods (4) are provided on the lower plate (11), a middle ring (40) is provided on the vertical rods (4), and first springs (41) are provided on the upper and lower sides of the middle ring (40), respectively. The upper end of the first spring (41) located at the upper end acts on the movable plate (30), and the lower end of the first spring (41) located at the lower end acts on the lower plate (11). A lower pressure plate (42) is provided at the lower end of the vertical rods (4), and the lower pressure plate (42) is located below the lower plate (11).

5. The chuck for bagged materials according to claim 4, characterized in that: The two ends of the lower pressure plate (42) are respectively provided with end blocks (43), a transverse movable rod (44) is passed through the end block (43), a limiting end plate (45) is provided at the outer end of the transverse movable rod (44), the lower end of the limiting end plate (45) extends outwardly, and the inner end of the transverse movable rod (44) is provided with a T-shaped seat (47). The inner end sleeve of the transverse movable rod (44) is provided with a second spring (48), and the second spring (48) is located between the end block (43) and the T-shaped seat (47).

6. The chuck for bagged materials according to claim 5, characterized in that: The inner end of the T-shaped seat (47) is hinged with a connecting plate (49), and the inner end of the connecting plate (49) is hinged with a movable seat (50). The movable seat (50) is provided with a pair of spring pins (51). The lower end of the spring pin (51) is provided with a third spring (52). The third spring (52) is located on the lower side of the movable seat (50).

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