Diameter-variable multifunctional three-jaw gripping and stripping device and stripping method

Abstract

The invention discloses a variable-diameter type multifunctional three-jaw gripping and stripping device which comprises a gripping seat, jaw bodies in a circumferential array are hinged to the periphery of the gripping seat, a driving rod is rotatably arranged in the middle of the gripping seat in a penetrating mode, and a stretching assembly is arranged between the lower end of the driving rod and the jaw bodies. The driving rod rotates to drive the claw bodies to contract inwards and expand outwards, the distance between the driving rod and the claw bodies can be adjusted through the stretching assembly, and detachable chucks are arranged at the lower ends of the claw bodies. The device has the advantage of grabbing, clamping and stripping large-batch cylinder parts, products of various sizes in a variable range can be grabbed, clamped and stripped at the same time, the chuck of the device can be expanded according to actual production task requirements, and the clamping compatibility of the device is better.

Description

Technical Field

[0001] The invention relates to the technical field of clamping and stripping column-type parts, and in particular to a variable-diameter multifunctional three-claw clamping and stripping device and a stripping method. Background Art

[0002] In some assembly production operations, columnar parts often need to be stripped of protective covers during the pre-assembly testing process. Since the protective covers are evacuated before leaving the factory, it is difficult to strip them off by hand. The general stripping method can easily scratch the surface of the product, has low product processing efficiency, and requires high labor intensity for workers, making it difficult to meet the needs of large-scale assembly production. In addition, when stripping multiple parts of different sizes at a time, the problem of loose fit between the chuck and the product needs to be solved. The design needs to solve the problems of chuck disassembly method and chuck required for different scenarios. Summary of the invention

[0003] In view of this, the present invention proposes a variable diameter multifunctional three-claw grasping and stripping device and a stripping method which have high use efficiency, simple structure, easy operation and good compatibility.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions: A variable diameter multifunctional three-claw grasping and stripping device comprises a grasping seat, the outer periphery of which is hingedly provided with claw bodies in a circular array, a driving rod is rotatably provided through the middle of the grasping seat, a stretching assembly is provided between the lower end of the driving rod and the claw body, the rotation of the driving rod drives the plurality of claw bodies to contract inwardly and expand outwardly, the spacing between the driving rod and the claw body is adjustable through the stretching assembly, and a detachable chuck is provided at the lower end of the claw body.

[0005] As a further improvement of the above technical solution: Preferably, the telescopic assembly comprises an adjusting rod having a transmission block threadedly connected to the lower end of the driving rod and having two ends respectively hinged to the claw body and the transmission block.

[0006] Preferably, the adjusting rod is provided with a plurality of adjusting holes.

[0007] Preferably, adjustment rods are provided on both the left and right sides of the claw body.

[0008] Preferably, a rotating handle is provided on the upper end of the driving rod.

[0009] Preferably, a clamping block is fixedly provided at the lower end of the claw body, and the chuck is clamped on the clamping block.

[0010] Preferably, the chuck comprises a connecting portion connected to the claw body and a clamping portion connected to the connecting portion, the clamping portion is in an arc shape, and a plurality of the clamping portions form a circle.

[0011] The present invention also provides a stripping method using a three-claw gripping stripping device, comprising the following steps: Step 1. Select a suitable chuck; according to the diameter of the part, select a suitable chuck and install it at the lower end of the claw body. Step 2. Adjust to the appropriate diameter so that the chuck fits the part, and then peel off the part.

[0012] As a further improvement of the above technical solution: Preferably, step 2 specifically includes the following steps: Step 41. Rotate the rotating handle counterclockwise to make the opening diameter of the chuck slightly larger than the diameter of the part to be clamped; Step 42, insert the clamped parts into the three claws; Step 23, turn the rotating handle clockwise to make the chuck fit tightly against the surface of the part. Complete the gripping and peeling of a set of products.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. The device of the present invention has the advantage of clamping and stripping a large number of cylindrical parts. The device can clamp and strip products of various sizes within a variable range at the same time, and the chuck of the device can be expanded according to the actual production task requirements to make it more compatible with clamping; 2. The main body parts of the present invention adopt a lightweight design, which reduces the weight of the parts while meeting the strength requirements, greatly reduces the labor intensity of operators, reduces material loss, and effectively improves product production efficiency; 3. The present invention provides an efficient quick-disassembly and quick-assembly method, which uses a collet that is matched with the head of the claw body. When parts need to be replaced, it can adapt to most gripping and stripping scenarios without using additional clamps. It saves the time for replacing wearing parts and improves the overall efficiency of product production. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 It is a bottom view structural schematic diagram of the present invention.

[0015] In the figure: 1, gripping seat; 2, claw body; 3, driving rod; 4, chuck; 41, connecting part; 42, clamping part; 5, transmission block; 6, adjusting rod; 61, adjusting hole; 7, rotating handle; 8, clamping block. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0017] In the description of the present invention, unless otherwise specified, "plurality" means two or more than two; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0018] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0019] As attached Figure 1 With attached Figure 2 As shown, the technical solution is composed of the following parts: a gripping seat 1, a claw body 2, a driving rod 3, a chuck 4, a transmission block 5, an adjusting rod 6, a rotating handle 7, and a clamping block 8.

[0020] The three claw bodies 2 are hinged to the claw seat by 6 fixing screws 7 and 6 fixing nuts 8. At the same time, the three claw bodies 2 are arranged in a circular array about the claw seat. The driving rod 3 is installed through the slot at the upper end of the claw seat and can rotate on the claw seat. A transmission block 5 is screwed at the lower end of the driving rod 3. The transmission block 5 is triangular in shape, and has three protrusions on it. One end of the six adjustment plates is hingedly mounted on the left and right sides of the three protrusions, and the other end is hingedly mounted on the left and right sides of the three claw bodies 2 through a fixing nut. A rotating handle 7 is installed on the upper end of the driving rod 3. The driving rod 3 is driven to rotate on the claw seat by rotating the handle 7, so that the transmission block 5 is screwed with the driving rod 3 to move up and down (the transmission block 5 remains stationary on the horizontal plane under the action of the six adjustment rods 6). At the same time, due to the up and down movement of the transmission block 5, the three claws 2 are closed inward or expanded outward at the same time.

[0021] A plurality of adjustment holes 61 are provided on the adjustment rod 6. Therefore, by synchronously adjusting the corresponding adjustment holes 61 on the adjustment rod 6, the spacing of the adjustment rod 6 can be shortened in disguise. Thus, when the relative position of the transmission block 5 and the gripping seat 1 remains unchanged, the diameter of the circle constructed by the lower part of the three claw bodies 2 becomes smaller. Similarly, if the adjustment holes 61 are adjusted, the spacing of the adjustment rod 6 becomes longer in disguise, and the diameter of the circle constructed becomes larger, so that columns with different diameters can be clamped. A chuck 4 is connected to the lower end of the claw body 2, and the two are connected by a snap-fitting manner, which is mainly for the convenience of replacement while ensuring stability during operation. Left and right snap-fitting blocks 8 are arranged at the lower end of the claw body 2, and the chuck 4 includes a connecting portion 41 and a clamping portion 42. The connecting portion 41 has a connecting groove matching the clamping block 8, and the clamping block 8 slides into one end of the clamping block 8 through the connecting groove to form a snap-fitting effect, thereby ensuring the convenience of replacement and stability during operation. At the same time, a clamping portion 42 is arranged on the inner wall of the connecting portion 41, and the clamping portions 42 of the three chucks 4 are all facing the center of the driving rod 3, and the clamping portions 42 are arc-shaped, which can be spliced ​​into a perfect circle after being combined. Therefore, the diameter of the grasped cylinder can be adjusted by adjusting the thickness and shape of the chuck 4.

[0022] When the diameters of cylinders of various specifications are not much different, the diameters can be adjusted by adjusting the chuck 4. When the diameters are greatly different, they can be adjusted through the adjustment hole 61. The two can be used simultaneously or separately.

[0023] The use process of the present invention: The use of the three-claw gripping and stripping device is specifically divided into two major steps: one is to replace the specific clamping head 4; the other is to adjust the appropriate diameter of the gripping parts.

[0024] When replacing a specific chuck 4, 1) first confirm that the replaced chuck 4 matches the clamped part to ensure the compatibility of the device and the part; 2) the chuck 4 is stably installed into the front end of the claw to ensure the stability of the device when in use; 3) after the chucks 4 of the three claws are stably installed, you can start adjusting the diameter size.

[0025] When adjusting the appropriate diameter to clamp the parts, 1) rotate the rotating handle 7 counterclockwise to make the opening diameter of the chuck 4 slightly larger than the diameter of the clamped parts; 2) insert the clamped parts into the three claws; 3) rotate the rotating handle 7 clockwise to make the chuck 4 fit tightly against the surface of the parts. The operator pulls the rear handle of the three claws to peel the parts from the original position, thus completing the clamping and peeling of a group of products.

[0026] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A variable diameter multifunctional three-claw gripping and stripping device, comprising a gripping seat (1), wherein the gripping seat (1) is hingedly provided with claw bodies (2) arranged in a circular array on its periphery, wherein a driving rod (3) is rotatably provided through the middle of the gripping seat (1), wherein a stretching assembly is provided between the lower end of the driving rod (3) and the claw bodies (2), wherein the plurality of claw bodies (2) are driven to retract inwards and expand outwards through the rotation of the driving rod (3), and wherein the plurality of claw bodies (2) are driven to retract inwards and expand outwards, wherein: The distance between the driving rod (3) and the claw body (2) of the stretching assembly is adjustable, and a detachable clamp (4) is provided at the lower end of the claw body (2).

2. The variable diameter multifunctional three-claw gripping and stripping device according to claim 1 is characterized in that: The telescopic assembly comprises a transmission block (5) threadedly connected to the lower end of the driving rod (3), and an adjustment rod (6) having two ends respectively hinged to the claw body (2) and the transmission block (5).

3. The variable diameter multifunctional three-claw gripping and stripping device according to claim 2 is characterized in that: The adjusting rod (6) is provided with a plurality of adjusting holes (61).

4. The variable diameter multifunctional three-claw gripping and stripping device according to claim 2 is characterized in that: Adjustment rods (6) are provided on both the left and right sides of the claw body (2).

5. The variable diameter multifunctional three-claw gripping and stripping device according to claim 1, characterized in that: A rotating handle (7) is provided at the upper end of the driving rod (3).

6. The variable diameter multifunctional three-claw gripping and stripping device according to claim 1, characterized in that: A clamping block (8) is fixedly provided at the lower end of the claw body (2), and the clamping head (4) is clamped on the clamping block (8).

7. The variable diameter multifunctional three-claw gripping and stripping device according to claim 1, characterized in that: The chuck (4) comprises a connecting portion (41) connected to the claw body (2) and a clamping portion (42) connected to the connecting portion (41); the clamping portion (42) is in an arc shape, and a plurality of the clamping portions (42) form a circle.

8. A stripping method using a three-claw gripping stripping device, characterized in that: The following steps are involved: Step 1. Select a suitable chuck (4). According to the diameter of the part, select a suitable chuck (4) and install it on the lower end of the claw body (2). Step 2, adjust the diameter and peel off; align the chuck (4) with the part to be separated, adjust it to a suitable diameter so that the chuck (4) fits the part, and then peel off the part.

9. The stripping method using a three-claw gripping stripping device according to claim 8, characterized in that: step2 specific The following steps are involved: Step 41, rotate the rotating handle (7) counterclockwise to make the opening diameter of the chuck (4) slightly larger than the diameter of the part to be clamped; Step 42, insert the clamped parts into the three claws; Step 23. Rotate the rotating handle (7) clockwise to make the chuck (4) fit tightly against the surface of the part; Step 24: The operator pulls the rear handle of the three-claw to peel the parts from their original position, completing the gripping and peeling of a group of products.

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