Grabbing device

Abstract

The utility model discloses a grabbing device which comprises a bottom plate, a plurality of first openings arranged in the first direction are formed in the bottom plate, a supporting shaft penetrating through the first openings in the first direction is installed on the bottom plate, a rotatable connecting rod arranged in the first openings is installed on the supporting shaft, and one end of the connecting rod is connected with a grabbing hand. The other end of the connecting rod is connected with a first power source for driving the connecting rod to rotate, the gripper comprises a contact part, a connecting part and a fixing part, the fixing part is connected with the connecting rod, the connecting part is connected with the fixing part and the contact part, and the connecting part is arc-shaped. The gripper comprises a fixing part, a connecting part and a contact part, the contact part is inserted into the bag body, and the first power source is connected with the gripper and drives the gripper to rotate, so that the contact part can rotate from a vertical state to a horizontal state, the contact part can be in contact with the inner wall of the bag body, and the whole bag can be conveniently lifted.

Description

Technical Field

[0001] This utility model relates to a bagged material gripping device, and more specifically, to a gripping apparatus. Background Technology

[0002] When feeding bagged materials, the bottom of the bag needs to be punctured, and then the bag needs to be shaken to allow the material inside to be completely poured into the hopper. Current methods for gripping bagged materials primarily use claws to hold the bags. While this allows the bags to be moved, the gripping force of the claws becomes insufficient when the material is poured out, posing a risk of the bag falling. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a gripping device that can prevent bags from falling off.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a gripping device, comprising a base plate, wherein the base plate has a plurality of first openings arranged along a first direction, a support shaft passing through each first opening along the first direction is mounted on the base plate, a rotatable connecting rod is mounted on the support shaft and placed within the first opening, one end of the connecting rod is connected to a gripper, and the other end of the connecting rod is connected to a first power source for driving the connecting rod to rotate, the gripper comprising a contact part, a connecting part and a fixing part, the fixing part being connected to the connecting rod, the connecting part being connected to the fixing part and the contact part, and the connecting part being arc-shaped.

[0005] Furthermore, the center of the connecting part coincides with the center of the support shaft.

[0006] Furthermore, the end of the connecting rod facing the gripper is provided with a connecting groove, and a connecting block is embedded in the connecting groove.

[0007] Furthermore, the end opposite to the contact portion and the connecting portion is tapered.

[0008] Furthermore, it also includes a connecting plate, on which the first power source is mounted. The output end of the first power source extends toward the base plate and is connected to a movable plate, which drives the connecting rod to rotate.

[0009] Furthermore, the movable plate is connected to a movable frame, the movable frame is provided with an arc-shaped slide rail, and the connecting rod is connected to a connecting shaft that passes through the slide rail and can move along the slide rail. The movement of the movable frame drives the connecting rod to rotate, and the rotation of the connecting rod drives the gripper to rotate.

[0010] Furthermore, a support rod is installed between the base plate and the connecting plate. One end of the support rod is fixed to the base plate, and the other end of the support rod passes through the connecting plate. A spring is sleeved on the support rod.

[0011] Furthermore, it also includes a second power source, the output end of which extends through the base plate to the bottom of the base plate and is connected to a push plate. The push plate is connected to a guide rod that passes through the base plate and the movable frame, and the guide rod passes through the center line of the movable frame.

[0012] Furthermore, the contact part is inserted into the bag body to make the connecting part contact the bag body. The contact point between the connecting part and the bag body is the first contact point. The distance between the first contact point and the support shaft is L. The angle between the line connecting the first contact point and the support shaft and the bag body is A. When the connecting rod drives the gripper to rotate, both L and A remain unchanged.

[0013] In summary, this utility model has the following beneficial effects:

[0014] The gripper includes a fixing part, a connecting part, and a contact part. The contact part is inserted into the bag body. The first power source connects to the gripper and drives the gripper to rotate, so that the contact part can rotate from a vertical state to a horizontal state, so that the contact part can contact the inner wall of the bag body, making it easy to lift the bag as a whole. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the gripping device.

[0016] Figure 2 This is a schematic diagram of the structure after the baffle is removed;

[0017] Figure 3 This is a structural diagram after the gripper has performed its action;

[0018] Figure 4 for Figure 3 The front view;

[0019] Figure 5 A structural diagram showing the connection relationship between the gripper, the connecting rod, and the moving frame;

[0020] Figure 6 A schematic diagram of the gripper structure;

[0021] Figure 7 This is a schematic diagram of the movable plate structure;

[0022] Figure 8 This is a schematic diagram of the base plate structure;

[0023] Figure 9 This is a schematic diagram of the connecting rod structure;

[0024] Figure 10 This is a schematic diagram of the gripper rotation process;

[0025] Reference numerals: connecting plate 100, bracket 110, first power source 111, support rod 120, spring 121, mounting base 122, linear bearing 130, base plate 200, support shaft 210, first opening 220, second opening 221, support hole 211, baffle 230, first guide hole 240, mounting hole 250, moving plate 300, moving frame 310, slide rail 311, third opening 320, first clearance opening 360, second guide hole 340, connecting hole 350, second power source 330, push plate 331, guide rod 332, connecting rod 400, first shaft hole 401, second shaft hole 402, connecting groove 403, connecting shaft 410, gripper 500, contact part 510, connecting part 520, fixing part 530, connecting block 531, bag body 600, first contact point 700. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] See Figures 1 to 10 This embodiment discloses a gripping device, including a base plate 200 with mounting holes 250. A mounting base 122 is fixed through the mounting holes 250, and a support rod 120 is inserted into the mounting base 122, thereby fixing the support rod 120 to the mounting base 122. A connecting plate 100 is mounted on the top of the support rod 120 via a linear bearing 130, allowing the connecting plate 100 to move on the support rod 120. A spring 121 is sleeved on the support rod 120 to buffer the relative movement between the connecting plate 100 and the support rod 120 when the positioning of the base plate is incorrect.

[0028] A U-shaped bracket 110 is mounted on the connecting plate 100. A first power source 111, which is a cylinder, is installed inside the bracket 110. The output end of the first power source 111 faces the base plate 200. The first power source 111 passes through the connecting plate 100 and is connected to a movable plate 300. The movable plate 300 has a connecting hole 350, and the output end of the first power source 111 connects to the connecting hole 350 to fix it in place. The first power source 111 can drive the movable plate 300 to move between the connecting plate 100 and the base plate 200.

[0029] The base plate 200 has multiple first openings 220 arranged along a first direction. A support shaft 210 passing through each first opening 220 along the first direction is mounted on the base plate 200. A rotatable connecting rod 400 is mounted on the support shaft 210 and placed within each first opening 220. One end of the connecting rod 400 is connected to a gripper 500, and the other end is connected to a connecting shaft 410. A movable plate 300 is connected to a movable frame 310, which is equipped with an arc-shaped slide rail 311 through which the connecting shaft 410 passes. Specifically, the base plate 200 has a support hole 211 through which the support shaft 210 passes and can rotate. The connecting rod 400 has a first shaft hole 401 and a second shaft hole 402 at both ends. The connecting shaft 410 passes through the first shaft hole 401 to connect to the connecting rod 400, and the support shaft 210 passes through the second shaft hole 402 to connect to the connecting rod 400. The base plate 200 has a second opening 221 parallel to the first opening 220. When the moving plate 300 approaches the base plate 200, the second opening 221 can make way for the moving frame 310. Simultaneously, the moving plate 300 also has a third opening 320 to make way for the gripper 500, so that the rotation of the gripper 500 is not restricted by the moving plate 300. The first power source 111 drives the moving plate 300 to move, which in turn drives the moving frame 310 to move, causing the connecting shaft 410 to move within the slide rail 311. This, in turn, drives the connecting rod 400 to rotate, and the rotation of the connecting rod 400 drives the rotation of the gripper 500.

[0030] The gripper 500 includes a contact portion 510, a connecting portion 520, and a fixing portion 530. The fixing portion 530 connects to the connecting rod 400, and the connecting portion 520 connects the fixing portion 530 and the contact portion 510. The connecting portion 520 is arc-shaped. A connecting groove 403 is provided at one end of the connecting rod 400 facing the gripper 500. A connecting block 531 is provided in the connecting groove 403. After the connecting block 531 is embedded in the connecting groove 403, it is fixed to the connecting groove 403 by welding, thereby fixing the connecting rod 400 to the gripper 500.

[0031] The center of the connecting part 520 coincides with the center of the support shaft 210. The end of the contact part 510 opposite to the connecting part 520 is tapered. When grasping the bag, the contact part 510 is inserted into the bag body 600 by its tapered end until the connecting part 520 contacts the bag body 600. The contact point between the connecting part 520 and the bag body 600 is the first contact point 700. The distance between the first contact point 700 and the support shaft 210 is L. The angle between the line connecting the first contact point 700 and the support shaft 210 and the bag body 600 is A. Since the center of the connecting part 520 coincides with the center of the support shaft 210, the first contact point 700 remains at the puncture site pierced by the contact part 510 when the gripper 500 rotates. The position of the first contact point 700 does not change, and both L and A remain unchanged. This prevents the puncture site pierced by the contact part 510 on the bag body 600 from expanding due to the rotation of the gripper 500, thus ensuring the structural strength of the bag body 600 and preventing the bag from falling due to rupture. Continuing to rotate the gripper 500 until the contact part 510 is parallel to the bag body 600 allows the contact part 510 to contact the inner wall of the bag body 600, making it easier to lift the bag as a whole.

[0032] A second power source 330, which is a cylinder, is installed on the base plate 200. The moving plate 300 has a first clearance opening 360 to allow space for the installation of the second power source 330. The output end of the second power source 330 extends through the base plate 200 to the bottom of the base plate 200 and is connected to a push plate 331. The second power source 330 can drive the push plate 331 to move. When there is a residual bag 600 on the gripper 500, the push plate 331 can push the bag 600 away from the gripper 500, thereby facilitating the gripper 500 to grab subsequent bags.

[0033] The base plate 200 has a first guide hole 240, and the moving plate 300 has a second guide hole 340. The positions of the first guide hole 240 and the second guide hole 340 are corresponding. The push plate 331 is connected to a guide rod 332 that passes through the first guide hole 240 and the second guide hole 340. The guide rod 332 can ensure the stability of the movement of the push plate 331.

[0034] The guide rod 332 also passes through the center line of the slide rail 311 of the movable frame 310. When the connecting shaft 410 moves to the middle position of the slide rail 311, it can abut against the guide rod 332, thereby restricting the movement of the connecting shaft 410 and keeping the connecting shaft 410 in its current state, so that the gripper 500 can be kept in a vertical position for easy insertion into the bag body 600.

[0035] The base plate 200 is rectangular, and baffles 230 are installed on all four sides of the base plate 200. The baffles 230 serve a protective function, and the two baffles 230 in the first direction can limit the support shaft 210 to prevent the support shaft 210 from coming out of the support hole 211.

[0036] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A gripping device, characterized in that, The device includes a base plate (200) having multiple first openings (220) arranged along a first direction. The base plate (200) is equipped with a support shaft (210) that passes through each first opening (220) along the first direction. The support shaft (210) is equipped with a rotatable connecting rod (400) placed in the first opening (220). One end of the connecting rod (400) is connected to a gripper (500), and the other end of the connecting rod (400) is connected to a first power source (111) that drives the connecting rod (400) to rotate. The gripper (500) includes a contact part (510), a connecting part (520), and a fixing part (530). The fixing part (530) is connected to the connecting rod (400), and the connecting part (520) connects the fixing part (530) and the contact part (510). The connecting part (520) is arc-shaped.

2. The gripping device according to claim 1, characterized in that, The center of the connecting part (520) coincides with the center of the support shaft (210).

3. The gripping device according to claim 1, characterized in that, The connecting rod (400) has a connecting groove (403) at one end facing the gripper (500), and the connecting groove (403) is provided with a connecting block (531) embedded in the connecting groove (403).

4. The gripping device according to claim 1, characterized in that, The end of the contact portion (510) and the connecting portion (520) that are connected at one end to the other end is tapered.

5. A gripping device according to claim 1, characterized in that, It also includes a connecting plate (100), on which the first power source (111) is mounted. The output end of the first power source (111) extends toward the base plate (200) and is connected to a movable plate (300). The movable plate (300) drives the connecting rod (400) to rotate.

6. A gripping device according to claim 5, characterized in that, The movable plate (300) is connected to a movable frame (310), the movable frame (310) is provided with an arc-shaped slide rail (311), the connecting rod (400) is connected to a connecting shaft (410) that passes through the slide rail (311) and can move along the slide rail (311), the movement of the movable frame (310) drives the connecting rod (400) to rotate, and the rotation of the connecting rod (400) drives the gripper (500) to rotate.

7. A gripping device according to claim 5, characterized in that, A support rod (120) is installed between the base plate (200) and the connecting plate (100). One end of the support rod (120) is fixed to the base plate (200), and the other end of the support rod (120) passes through the connecting plate (100). A spring (121) is sleeved on the support rod (120).

8. A gripping device according to claim 6, characterized in that, It also includes a second power source (330), the output end of which extends through the base plate (200) to the bottom of the base plate (200) and is connected to a push plate (331). The push plate (331) is connected to a guide rod (332) that passes through the base plate (200) and the movable frame (310). The guide rod (332) passes through the center line of the movable frame (310).

9. A gripping device according to claim 1, characterized in that, The contact part (510) is inserted into the bag body (600) so that the connecting part (520) contacts the bag body (600). The contact point between the connecting part (520) and the bag body (600) is the first contact point (700). The distance between the first contact point (700) and the support shaft (210) is L. The angle between the line connecting the first contact point (700) and the support shaft (210) and the bag body (600) is A. When the connecting rod (400) drives the gripper (500) to rotate, both L and A remain unchanged.

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