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CN-122007868-A - Self-adaptive double-drive electrode cap dismounting system and control method

CN122007868ACN 122007868 ACN122007868 ACN 122007868ACN-122007868-A

Abstract

The invention relates to the technical field of automation, in particular to a self-adaptive double-drive electrode cap dismounting system and a control method, wherein the self-adaptive double-drive electrode cap dismounting system comprises a self-adaptive cap dismounting module, a first driving mechanism and a second driving mechanism, wherein the self-adaptive cap dismounting module comprises an upper cover, a base and a rotary handle arranged between the upper cover and the base, the rotary handle comprises a gear shell and a multi-shaft base, the multi-shaft base is an annular base with an outer circumference and an inner circumference, the inner circumference forms a dismounting position of an electrode cap, a plurality of radial piston holes are circumferentially distributed between the inner circumference and the outer circumference, the radial piston holes penetrate through the inner circumference and the outer circumference along the radial direction of the multi-shaft base, each radial piston hole is internally provided with a piston and a lock tongue which are connected, the first driving mechanism is used for driving the piston to move along the radial direction so that the lock tongue extends inwards to self-adaptively lock the electrode cap, and the second driving mechanism is independent of the first driving mechanism and is used for driving the rotary handle to rotate after the locking is completed so as to realize the dismounting of the electrode cap from an electrode rod.

Inventors

  • TIAN YI
  • ZHOU LIWEN
  • ZHU XIAOXING

Assignees

  • 上海桥田智能设备有限公司

Dates

Publication Date
20260512
Application Date
20260413

Claims (12)

  1. 1. An adaptive dual-drive electrode cap removal system, comprising: The self-adaptive cap disassembly module comprises an upper cover, a base and a rotary handle arranged between the upper cover and the base, wherein the rotary handle comprises a gear housing and a multi-shaft base, the multi-shaft base is an annular base with an outer circumference and an inner circumference, the inner circumference forms a disassembly position of an electrode cap, a plurality of radial piston holes are circumferentially distributed between the inner circumference and the outer circumference, the radial piston holes penetrate through the inner circumference and the outer circumference along the radial direction of the multi-shaft base, a piston and a lock tongue which are connected are arranged in each radial piston hole, the lock tongue is arranged towards the inner circumference, the piston is arranged towards the outer circumference, and the gear housing is arranged on the outer circumference; the first driving mechanism is used for driving the piston to move along the radial direction, so that the lock tongue extends inwards to carry out self-adaptive locking on the electrode cap; The second driving mechanism is independent of the first driving mechanism and is used for driving the rotary handle to rotate after locking is completed so as to detach the electrode cap from the electrode rod.
  2. 2. The adaptive dual drive electrode cap removal system of claim 1, wherein the second drive mechanism cooperates with the gear housing via a rack to drive the rotating grip to rotate relative to the upper cover and base.
  3. 3. The adaptive dual-drive electrode cap removal system of claim 1, wherein the second drive mechanism is configured to remove an electrode cap from below into a removal position when the rotating handle is driven to rotate in a first rotational direction, and to remove an electrode cap from above into a removal position when the rotating handle is driven to rotate in a second rotational direction, the first rotational direction being opposite the second rotational direction.
  4. 4. The adaptive dual drive electrode cap removal system of claim 1, wherein the first drive mechanism drives the radial movement of the piston within the radial piston bore along the radial direction of the multi-axis base to lock the electrode cap in the removed position by fluid pressure control.
  5. 5. The adaptive dual drive electrode cap removal system of claim 1, wherein the radial piston bore is a radial stepped bore having a first bore and a second bore, the piston being movable within the first bore, the locking bolt being movable within the second bore.
  6. 6. The self-adaptive double-drive electrode cap disassembly system according to claim 1, wherein the first driving mechanism comprises a locking fluid channel and an unlocking fluid channel, the locking fluid channel comprises a locking air channel interface and an annular locking air chamber extending along the outer circumference, the annular locking air chamber is communicated with the piston, when fluid enters the system through the locking air channel interface, the fluid acts on a first pressure surface of the piston through the annular locking air chamber, so that the piston moves inwards in the radial direction to push the lock tongue to extend inwards, thereby forming annular synchronous clamping force in the outer circumference direction of the electrode cap and realizing radial synchronous locking of the electrode cap; the unlocking fluid channel comprises an unlocking air channel interface and an unlocking air chamber, fluid enters the unlocking air chamber from the unlocking air channel interface and acts on a second pressure surface of the piston to enable the piston to move away from the center in the radial direction, and the lock tongue is driven to synchronously retract outwards, so that the unlocking operation of the electrode cap is realized; The first compression surface and the second compression surface are oppositely arranged.
  7. 7. The adaptive dual drive electrode cap removal system of claim 6, wherein the second compression surface of the piston is coupled to the locking tongue via a piston rod.
  8. 8. The self-adaptive double-driving electrode cap disassembly system according to claim 1, wherein a storage groove is formed on the surface of the lock tongue and used for storing lubricating grease.
  9. 9. The self-adaptive double-drive electrode cap disassembly system according to claim 1, wherein the claw part of the lock tongue is provided with an inclined sharp edge structure, an included angle between sharp edges in the inclined sharp edge structure is 50-70 degrees, and the sharp edges in the inclined sharp edge structure are inclined by 8-12 degrees relative to the vertical direction.
  10. 10. The adaptive double drive electrode cap removal system of claim 9, wherein the claw portion of the locking bolt is provided with a hollow groove.
  11. 11. The adaptive dual drive electrode cap removal system of claim 1, wherein rolling balls are disposed between the upper cover and the upper surface of the gear housing and between the base and the lower surface of the gear housing.
  12. 12. A control method based on the self-adaptive double-drive electrode cap removing system according to any one of claim 1 to 11, wherein the control method comprises upper electrode cap removing and lower electrode cap removing, The disassembly of the upper electrode cap comprises the steps of starting a first driving mechanism, tightly holding the electrode cap entering a disassembly position from the upper part by a lock tongue, driving a rotary handle to rotate along a second rotation direction by a second driving mechanism, and rotationally disassembling the upper electrode cap; the disassembly of the lower electrode cap comprises the steps of starting a first driving mechanism, enabling a lock tongue to hold the electrode cap which enters a disassembly position from below, and enabling a second driving mechanism to drive a rotary handle to rotate along a first rotation direction so as to rotationally disassemble the lower electrode cap.

Description

Self-adaptive double-drive electrode cap dismounting system and control method Technical Field The invention belongs to the technical field of automation, and particularly relates to a self-adaptive double-drive electrode cap dismounting system and a control method. Background At present, a welding gun and an electrode rod are generally connected through threads, and an electrode cap and the electrode rod are generally in tight fit through conical surfaces. Therefore, when the electrode cap is disassembled, in order to prevent the electrode rod from unscrewing or loosening along with the electrode cap, the disassembly is generally performed based on the principle of 'knob' -type cap disassembly, namely, the electrode cap is rotationally disassembled along the screwing direction of the screw thread of the electrode rod, and the existing electrode cap replacing machine basically adopts the working principle. Various electrode cap replacement devices have been disclosed in the prior art. For example, CN111151859B discloses an electrode cap replacing machine, an electrode cap is clamped by a claw and is driven by a driving device to rotate by a cap disassembling gear, and CN119098740A discloses a pneumatic electrode cap disassembling device, wherein an impeller is driven by air flow to drive a clamping mechanism to rotate, and the electrode cap and an electrode rod are preprocessed by cold and hot air flow so as to reduce the risk of clamping. Although the device can realize the automatic disassembly of the electrode cap, most of clamping mechanisms of the device adopt a rigid claw or cam connecting rod structure, and the clamping force output is realized by relying on mechanical rigid transmission in the clamping process, so that the device has the common problem of lacking flexible self-adaption capability. The existing rigid clamping structure is difficult to adaptively adjust according to the size deviation, the abrasion state or the assembly error of the electrode cap, and when the electrode cap has larger size deviation (such as +/-0.2 mm) or uneven surface abrasion, the phenomena of local stress concentration, uneven clamping or slipping are easy to occur. The clamping force is coupled with the disassembly torque. Most devices realize clamping and rotating actions through the same driving chain, and the clamping force and the disassembly torque are mutually coupled, so that the stress concentration and even plastic deformation of the structure are easily caused when the cap disassembly resistance is large, and the service life of equipment is influenced. The clamping force is difficult to evenly distribute. The rigid multi-claw structure is easy to generate unbalanced load in the clamping process, so that part of claws are stressed too much, part of claws are not fully contacted, and the cap removing stability is reduced. The universality and the reliability are insufficient. The existing device is generally only suitable for electrode caps with specific specifications, has poor compatibility and is easy to cause faults due to friction resistance and stress concentration in the continuous operation process. Therefore, it is necessary to provide an automatic electrode cap disassembly system with flexible self-adaptive locking capability, so that a plurality of locking units can be synchronously adjusted under the driving action and form uniform clamping force, and simultaneously, mutual independence of clamping action and rotary disassembly action is realized, thereby improving cap disassembly stability, adaptability and equipment operation reliability. Disclosure of Invention The invention aims at solving the problems, and provides a self-adaptive double-drive electrode cap disassembly system and a control method which can be compatible with electrode caps of different specifications, and have the advantages of good machining consistency, simplicity in use, stability and reliability. The invention aims to provide a self-adaptive double-drive electrode cap dismounting system which is mainly characterized by comprising the following components: The self-adaptive cap disassembly module comprises an upper cover, a base and a rotary handle arranged between the upper cover and the base, wherein the rotary handle comprises a gear housing and a multi-shaft base, the multi-shaft base is an annular base with an outer circumference and an inner circumference, the inner circumference forms a disassembly position of an electrode cap, a plurality of radial piston holes are circumferentially distributed between the inner circumference and the outer circumference, the radial piston holes penetrate through the inner circumference and the outer circumference along the radial direction of the multi-shaft base, a piston and a lock tongue which are connected are arranged in each radial piston hole, the lock tongue is arranged towards the inner circumference, the piston is arranged towards the outer circumference, and the gea