Cylindrical electrode clamping tool

Abstract

The present invention discloses a cylindrical electrode clamping tool, which comprises two clamping handles, a rotating shaft and a limiting rod. The two clamping handles are cross-connected by a rotating shaft. The part of the clamping handle above the rotating shaft is a straight upper section, and the part below the rotating shaft is a circular arc-shaped lower section. The circular arc-shaped lower section has a circular arc-shaped outer shell, three springs and an elastic material inner shell, and the lowermost end of the inner shell is closely attached to the lowermost end of the outer shell. The structure of the present invention is simple, all mechanical components, and it will not malfunction geometrically; the clamping surface can be closely attached to the clamped cylindrical object, the clamped object is more stable, and the object is not easily damaged.

Description

Technical Field

[0001] The invention relates to a material handling device. Background Art

[0002] A gripper is a device that holds an object and thus manipulates it. It is able to hold and release an object while performing certain actions. Movement devices often mimic the movement of the human body, and in the case of grippers, the movement of the fingers. The "fingers" themselves are not part of the gripper, they are just specialized, custom-made tools used to hold an object.

[0003] The most widely used gripper is the pneumatic gripper; it is essentially a cylinder powered by compressed air. When air is supplied, the gripper jaws will approach the object and hold it firmly to perform other operations, and when the air direction is changed, the gripper will release the object. Typical applications are to change the object's direction or to move the object during a selection operation.

[0004] When the clamp holds the workpiece, there should be certain force constraints and shape constraints to ensure that the clamped workpiece is completely loosened during the movement, stop and loading process.

[0005] The cylindrical electrodes in the carbon industry are large in size and weigh hundreds of kilograms. They need to be taken, lifted, and moved from production machines, cooling pools, the ground, etc. Common fixed clamps are difficult to use, common handheld clamps are small in size, and there is a lack of suitable special clamping tools.

[0006] The invention with application number: 2021115454577 discloses a clamping tool, including a screw, a handle, a positioning block, a hook, a bolt, a nut and a washer. The handle is fixedly connected to the top of the screw, a threaded hole is provided in the middle of the positioning block, and the other end of the screw is threadedly connected to the threaded hole in the middle of the positioning block. There are two hooks, one end of which is slidably connected to the two ends of the positioning block respectively, and the other end contacts the part and is arranged oppositely. The two hooks are connected and locked by bolts, nuts and washers; the invention is a fixed workbench and can only be used for processing metal parts.

[0007] The application number: 2021113965760 relates to the field of single crystal furnace technology, and in particular to a clamp, a base, a fixed base; a clamp block, a clamp block having two, two clamp blocks arranged opposite to each other, a clamping space formed between the two clamp blocks, wherein at least one clamp block is slidably connected to the base, and the sliding direction is parallel to the setting direction of the two clamp blocks; and a drive assembly, the drive assembly is fixed to the base and acts on the slidable clamp block. This application is an optomechanical integrated device with a complex structure and high cost. Summary of the invention

[0008] Purpose of the invention:

[0009] Provided is a cylindrical electrode clamping tool with a simple structure and convenient use, which can adjust the arc of the clamping surface according to the diameter of the workpiece.

[0010] Technical solution:

[0011] The cylindrical electrode clamping tool of the present invention can be used to clamp cylindrical objects such as cylindrical electrodes, and includes two clamping handles, a rotating shaft, and a limiting rod.

[0012] The two clamping handles are cross-connected by a rotating shaft and can rotate around the rotating shaft by a certain angle.

[0013] The upper part of the clamping handle located above the rotating shaft is a straight upper section, and the lower part located below the rotating shaft is a circular arc-shaped lower section.

[0014] One end of a limiting rod that is substantially perpendicular to the connection is fixedly connected to the upper section of one clamping handle. The other end of the limiting rod is a free end and can contact or separate from the upper section of the other clamping handle; when contacting, it can limit the two clamping handles from getting too close and maintain the moving distance; when not contacting, the two clamping handles can rotate relatively crosswise.

[0015] The circular arc-shaped lower section has a circular arc-shaped outer shell made of a metal material and an inner shell made of an elastic material (metal sheet or non-metal sheet). A spring with a central axis substantially passing through the center of the circular arc surface of the outer shell is connected between the inner shell and the outer shell (one end of the spring is fixedly connected to the inner shell and the other end is fixedly connected to the outer shell). Preferably, there are three springs, and the middle one is equidistant from the two on both sides.

[0016] When the clamping tool clamps a cylindrical object, the spring is partially compressed, and the arc of the inner shell can automatically adapt to the arc of the cylinder. When the radius of the cylinder is different from the radius of the circular arc of the outer shell, the compression amount of the middle spring is inconsistent with the compression amounts of the two side springs, and the inner shell surface is substantially close to the cylinder surface.

[0017] Further preferably, there is a pipe hole at the contact between the outer shell and the middle spring. A spring sleeve is fixedly connected to the outside of the pipe hole of the outer shell for placing a part of the spring after the middle spring passes through the outer shell and restricting the outward movement of the spring by the top cover of the spring sleeve; the other end of the spring is fixedly connected to the inner wall of the top cover.

[0018] The top cover of the described spring sleeve is a movable cylinder plug, which is screwed between the cylinder wall of the sleeve (the cylinder wall has internal threads and the cylinder plug has external threads). The cylinder plug can move spirally on the cylinder wall, causing the spring therein to be stretched or compressed, and further causing the spring to squeeze the elastic material inner shell to varying degrees, so that the radian of its arc can undergo a greater active change, and the arc radius can undergo a greater change. It can clamp more cylindrical electrodes of various specifications with a larger radius variation range, and the inner shell is always basically the same as the radius of the clamped cylindrical electrode. The entire surface of the inner shell closely adheres to the outer circular surface of the cylindrical electrode, and there is basically no gap when the electrode clamping tool clamps the cylindrical electrode, making the clamping more stable and firm.

[0019] Due to the fact that the elastic deformation of the spring has a certain limit, when the middle spring is stretched or compressed in the sleeve, the deformation amount at the middle end of the inner shell can be larger, the radian change of the inner shell can be larger, and the radius of the clamped cylindrical object can have a larger adjustment range. The three springs can basically maintain the same compression amount, and the middle spring is not easily over-compressed to cause elastic failure.

[0020] Further preferably, the lowermost end of the inner shell is closely attached to the lowermost end of the outer shell (the height of the spring closest to this place is smaller), so that when the electrode clamping tool clamps the cylindrical electrode, it reduces the contact and damage to the electrode material at the lower end, or accidentally jams the clamped object.

[0021] The uppermost end of the clamping handle of the present invention can be connected below the lifting tool, so that the electrode clamping tool (and the object it clamps) can be lifted by the lifting tool and moved to different locations.

[0022] Beneficial effects:

[0023] The structure of the present invention is simple, all are mechanical components, without electronic or optical components, and hardly malfunctions.

[0024] The present invention can clamp cylindrical electrodes or other cylindrical materials with various different radii. The clamping surface (inner shell) can closely fit the cylindrical surface, making the clamped object more stable, without friction and sliding between each other, and the object is not easily damaged.

[0025] The used spring components can be conveniently replaced when the elasticity is inappropriate or the spring fails. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a three-dimensional structural schematic diagram of the present invention.

[0027] Figure 2 is another three-dimensional structural schematic diagram of the present invention.

[0028] In the figure, 1 is the upper section of the clamping handle; 2 is the support rod; 3 is the lower end (outer shell) of the clamping handle; 4 is the inner shell; 5 is the spring; 6 is the spring sleeve. Specific implementation mode

[0029] Example 1:

[0030] As Figure 1 shown in the cylindrical electrode clamping tool, it contains two clamping handles, a rotating shaft, and a limiting rod; the two clamping handles are cross-connected by a rotating shaft and can rotate around the rotating shaft by a certain angle; one end of the limiting rod is fixedly connected to the upper section of one clamping handle, and the other end of the limiting rod is a free end.

[0031] The circular arc-shaped lower section has a circular arc-shaped outer shell 3 and an inner shell 4 made of elastic material. Three springs 5 with the central axis basically passing through the center of the circular arc surface of the outer shell 3 are connected between the inner shell 4 and the outer shell 3. The middle one is equidistant from the two on both sides.

[0032] Example 2:

[0033] As Figure 2 shown in the cylindrical electrode clamping tool, it contains two clamping handles, a rotating shaft, and a limiting rod; the two clamping handles are cross-connected by a rotating shaft and can rotate around the rotating shaft by a certain angle; one end of the limiting rod is fixedly connected to the upper section of one clamping handle, and the other end of the limiting rod is a free end.

[0034] The circular arc-shaped lower section has a circular arc-shaped outer shell 3 and an inner shell 4 made of elastic material. Three springs 5 with the central axis basically passing through the center of the circular arc surface of the outer shell 3 are connected between the inner shell 4 and the outer shell 3. The middle one is equidistant from the two on both sides.

[0035] There is a pipe hole at the contact between the outer shell 3 and the middle spring 5. A spring sleeve 6 is fixedly connected to the outside of the pipe hole of the outer shell 3 for placing a part of the spring 5 after the middle spring 5 passes through the outer shell 3, and the outer movement of the spring 5 is restricted by the top cover of the spring sleeve 6. The other end of the spring 5 is fixedly connected to the inner wall of the top cover.

Claims

1. A cylindrical electrode clamping tool for clamping cylindrical objects, comprising two clamping handles, a rotating shaft, and a limiting rod; the two clamping handles are cross-connected by a rotating shaft and can rotate around the rotating shaft by a certain angle; the upper part of the clamping handle above the rotating shaft is a straight upper section, and the lower part below the rotating shaft is a circular arc-shaped lower section; the circular arc-shaped lower section has a circular arc-shaped outer shell (3) and an inner shell (4) made of an elastic material; three springs (5) whose central axes basically pass through the center of the circular arc surface of the outer shell (3) are connected between the inner shell (4) and the outer shell (3), and the middle one is equidistant from the two on both sides; it is characterized in that: One end of the limiting rod is fixedly connected to the upper section of one clamping handle, and the other end of the limiting rod is a free end and can contact or separate from the upper section of the other clamping handle; There is a pipe hole at the contact between the outer shell (3) and the middle spring (5), and a spring sleeve (6) is fixedly connected to the outside of the pipe hole for placing a part of the middle spring (5) after passing through the outer shell (3), and the outer movement of the middle spring (5) is restricted by the top cover of the spring sleeve (6), and the other end of the middle spring (5) is fixedly connected to the inner wall of the top cover; the top cover is a movable cylinder plug, and the cylinder plug can move on the cylinder wall, causing the middle spring (5) therein to be stretched or compressed, and further causing the middle spring (5) to squeeze the elastic material inner shell (4) to varying degrees, so that the radian of its circular arc changes more actively and the radius of the circular arc changes more, and it can clamp more cylindrical electrodes of more specifications with a larger radius variation range; The spring closest to the lowest end of the inner shell (4) has a smaller height, and the lowest end of the inner shell (4) is closely attached to the lowest end of the outer shell (3) to reduce the touch and damage to the electrode material at the lower end.

2. The cylindrical electrode clamping tool according to claim 1, wherein: The cylinder plug is screwed to the cylinder wall of the spring sleeve (6), and the cylinder plug can move spirally on the cylinder wall.

3. The cylindrical electrode clamping tool according to claim 1 or 2, characterized in that: The three springs basically maintain the same amount of compression, and the middle spring is not over-compressed.

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