Parallel opening type electrode cap dismounting machine

Abstract

The utility model discloses a parallel opening type electrode cap disassembling machine which comprises a first fork piece and a second fork piece which are arranged on the same installation substrate plane, and a plurality of cap disassembling positions used for being matched with electrode caps of different specifications are arranged on the sides, close to the electrode caps, of the first fork piece and the second fork piece. The cap dismounting position extends into a gap between the electrode cap and the electrode handle; the second fork piece is connected with a driving mechanism used for driving the second fork piece to move relative to the first fork piece in the horizontal direction and the dismounting direction of the electrode cap, and the driving mechanism drives the second fork piece to move relative to the first fork piece so as to dismount the electrode cap; the utility model can reduce the requirement on the size of the gap between the electrode cap and the step of the electrode handle, improve the standardization degree of dismounting the fork piece, protect the conical surface of the electrode in the dismounting process, prolong the service life of the electrode handle, and have the advantages of simple structure and reliable performance.

Description

Technical Field

[0001] This utility model relates to the technical field of electrode cap removal equipment, specifically to a parallel opening electrode cap removal machine. Background Technology

[0002] Automatic electrode cap removal is a crucial part of automated welding production lines. Currently, automatic electrode cap removal machines fall into two categories: one is a rotary removal machine, where a power motor drives a claw plate via a reduction mechanism. The claw plate directly clamps the electrode cap, generating a large torsional force relative to the electrode handle, causing it to be twisted off. This type of rotary removal machine involves relative rotation between the electrode cap and the electrode handle (or electrode grip), which can easily damage the electrode cone surface. Furthermore, the high torque during removal can damage the electrode handle, even causing it to fall off. The other type is a double-layer parallel opening removal machine, where two removal forks are inserted into the step between the electrode cap and the electrode handle (or electrode grip). The two forks then move in opposite directions, using tension to remove the electrode cap from the electrode handle. This double-layer parallel opening removal machine does not damage the electrode arm and eliminates the possibility of the electrode handle falling off.

[0003] Currently, all known parallel-opening disassembly machines employ a double-layer disassembly fork structure. Through a four-bar linkage with a fixed rotation center, the rotational force of the linkage is converted into tension caused by the relative separation of the forks. This tension is used to remove the electrode cap by widening the gap between the electrode cap and the electrode handle (or electrode grip). This disassembly machine is significantly affected by the welding clamp structure and operating conditions, limiting its applicability, and the standardization of the forks is relatively low. The main reasons are:

[0004] 1. Since the two fork-shaped disassembly claws need to be inserted into the gap between the electrode cap end face and the electrode handle (or electrode grip) step after they are attached, the disassembly claws of the two fork-shaped pieces have a minimum thickness limit. Therefore, the minimum gap between the electrode cap and the electrode handle (or electrode grip) step must be greater than the sum of the thicknesses of the two fork-shaped pieces at the disassembly point. Some welding clamps cannot meet this requirement.

[0005] 2. Due to the fork structure requirements of the double-layer parallel opening disassembly machine, when disassembling the electrode cap, the front end of the electrode handle (or electrode grip) needs to enter the fork cavity, and the fork cavity needs to conform to the shape of the electrode handle (or electrode grip). Therefore, the standardization of the electrode cap disassembly machine is relatively low. Utility Model Content

[0006] Technical objective: To address the shortcomings of existing electrode cap removal machines, this utility model discloses a parallel opening electrode cap removal machine.

[0007] Technical solution: To achieve the above technical objectives, the present invention adopts the following technical solution:

[0008] A parallel-opening electrode cap removal machine includes a first fork and a second fork disposed on the same mounting base plane. The first fork and the second fork each have several cap removal positions on the side near the electrode cap for cooperating with electrode caps of different specifications. The cap removal positions extend into the gap between the electrode cap and the electrode handle. The second fork is connected to a drive mechanism for moving the second fork relative to the first fork in the horizontal direction and the electrode cap removal direction. The drive mechanism moves the second fork relative to the first fork to remove the electrode cap.

[0009] Preferably, the drive mechanism of this utility model includes a lifting bracket, a lifting mechanism, and a translation cylinder. The lifting bracket is connected to an elastic lifting guide mechanism for keeping the lifting bracket on the mounting base plate. The translation cylinder is mounted on the lifting bracket and its drive end is connected to the second fork. The translation cylinder pushes the second fork closer to or further away from the first fork. The lifting mechanism pushes the lifting bracket to move along the electrode cap removal direction to remove the electrode cap.

[0010] Preferably, the lifting bracket of this utility model has a fork plate pressure plate on the side of the second fork plate parallel to the driving direction of the translation cylinder, and the fork plate pressure plate makes the second fork plate tightly adhere to the surface of the lifting bracket.

[0011] Preferably, the driving end of the lifting mechanism of this utility model abuts against the lower surface of the lifting bracket, and includes a driving cylinder and a linkage mechanism connected to the driving end of the driving cylinder. The linkage mechanism is hinged to the mounting base plate on the side of the lifting bracket, and a driving arm is connected to the corresponding linkage. The driving arm rotates synchronously with the corresponding linkage. The radius of the distance between the driving arm and the abutment position of the lifting bracket and the rotation center is different at different rotation angles. The lifting and lowering movement of the lifting bracket is realized by driving the linkage mechanism to rotate through the driving cylinder and driving the driving arm to rotate.

[0012] Preferably, the linkage mechanism of this utility model includes a linkage support connected to the drive end of the drive cylinder, and linkage groups symmetrically arranged about the center of the linkage support. Each linkage group includes a first linkage and a second linkage. The first linkage is hinged to the linkage support. The two ends of the second linkage are respectively hinged to the corresponding first linkage and the mounting base. The drive arm is fixedly connected to the second linkage to form an integral structure. The drive arm is driven to rotate by rotating the second linkage.

[0013] Preferably, the mounting base of this utility model is provided with a connecting rod support guide post at a position corresponding to the connecting rod support for guiding the lifting and lowering of the connecting rod support.

[0014] Preferably, the elastic lifting guide mechanism of this utility model includes a lifting guide column fixedly connected to the lifting bracket, and a guide seat fixedly installed below the mounting base plate. The end of the lifting guide column passes through the guide seat, and a lifting guide column return spring connected to the guide seat is provided at the end of the lifting guide column. The lifting guide column return spring provides a pulling force to the lifting guide column in the opposite direction of the upward direction. After the electrode cap is removed, the lifting bracket is reset by the lifting guide column return spring, so that the second fork and the first fork are back in the same plane.

[0015] Preferably, the mounting base of this utility model is connected to a balancing and fixing mechanism for overall installation and fixing of the disassembly machine. The parallel fixing mechanism includes a hat-removing machine mounting plate and a balancing guide seat. The balancing guide seat is fixedly connected to the hat-removing machine mounting plate. A balancing guide post is inserted inside the balancing guide seat and is inserted on the mounting base. A balancing spring is provided on the balancing guide post. The two ends of the balancing spring are respectively fixed to the surfaces of the balancing guide seat and the mounting base. The mounting base is limited by locking screws at the ends.

[0016] Preferably, the cap removal positions of this utility model are all semi-circular concave cavity structures, and the bottom of the concave cavity is provided with a thin semi-circular claw that fits the gap between the electrode cap and the electrode handle.

[0017] Beneficial effects: The parallel opening electrode cap removal machine disclosed in this utility model has the following beneficial effects:

[0018] 1. This utility model can reduce the requirement for the size of the gap between the electrode cap and the electrode handle (or electrode grip) step by using the first and second forks arranged opposite to each other, improve the standardization of disassembly forks, protect the electrode cone surface during disassembly, and extend the life of the electrode handle (or electrode grip). It has a simple structure and reliable performance.

[0019] 2. This utility model uses a linkage mechanism to drive the drive arm to rotate, forming a lifting structure similar to a cam. It can withstand a large driving force while ensuring the smooth lifting of the second fork, thereby stably disassembling the electrode cap. Compared with the direct lifting method, it can avoid structural collision damage caused by sudden changes in force due to the electrode cap separating from the electrode handle.

[0020] 3. The present invention is equipped with a connecting rod support guide column to guide the movement of the lifting mechanism, which can ensure smooth lifting and moving.

[0021] 4. The mounting base plate of this utility model is connected to a balancing and fixing mechanism, which can compensate for the displacement of the fork opening during the process of removing the electrode cap by means of a balancing spring. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0023] Figure 1 This is a structural diagram of the hat-removing machine of this utility model;

[0024] Figure 2 This is a diagram showing the mating state of the fork and electrode cap of this utility model;

[0025] Figure 3 This is a structural diagram of the lifting mechanism of this utility model;

[0026] Figure 4 This utility model is based on Figure 3 Enlarged view of a portion of region A in the middle;

[0027] Figure 5 This is a schematic diagram showing the movement of the fork during the cap removal process of this utility model;

[0028] Figure 6 This is a structural diagram of the balancing and fixing mechanism of this utility model;

[0029] Among them, 1-mounting base plate, 2-first fork, 3-second fork, 4-electrode cap, 5-cap removal position, 6-electrode handle, 7-lifting bracket, 8-translation cylinder, 9-fork plate pressure plate, 10-drive cylinder, 11-drive arm, 12-connecting rod support, 13-first connecting rod, 14-second connecting rod, 15-connecting rod support guide post, 16-lifting guide post, 17-guide seat, 18-lifting guide post return spring, 19-cap removal machine mounting plate, 20-balance guide seat, 21-balance guide post, 22-balance spring, 23-locking screw. Detailed Implementation

[0030] Reference will now be made in detail to embodiments of the present disclosure, one or more of which are set forth herein. Each embodiment and example is provided by way of explanation of the apparatus, composition, and materials of the present disclosure, and not by way of limitation. Rather, the following description provides convenient illustrations for implementing exemplary embodiments of the present disclosure. Indeed, it will be apparent to those skilled in the art that various modifications and variations can be made to the teachings of the present disclosure without departing from the scope or spirit of the present disclosure.

[0031] like Figures 1-6As shown, this utility model discloses a parallel opening type electrode cap removal machine, including a first fork 2 and a second fork 3 disposed on the same mounting base plate 1. The first fork 2 and the second fork 3 each have a plurality of cap removal positions 5 on the side near the electrode cap 4 for cooperating with electrode caps 4 of different specifications. The cap removal positions 5 extend into the gap between the electrode cap 4 and the electrode handle 6. The second fork 3 is connected to a drive mechanism for moving the second fork 3 in the horizontal direction and the electrode cap removal direction relative to the first fork 2. The second fork 3 is moved relative to the first fork 2 by the drive mechanism to remove the electrode cap 4.

[0032] The first fork 2 and the second fork 3 both have a semi-circular cavity structure for removing the electrode cap. Different sizes of removal positions can be set according to the specifications of the electrode cap to be removed, so as to improve the adaptability of the equipment. The bottom of the semi-circular cavity structure is provided with a thin semi-circular claw that fits the gap between the electrode cap and the electrode handle. When removing the electrode cap, the second fork 3 is opened by translating relative to the first fork 2, so that the welding clamp can drive the electrode cap 4 into the opening between the first fork 2 and the second fork 3, and then move to the side where the first fork 2 is located. The semi-circular claw corresponding to the first fork 2 enters the gap formed by the end face of the electrode cap 4 and the stepped surface of the electrode handle 6 (or electrode grip) and keeps the position fixed. The second fork 3 is moved again. Since the first fork 2 and the second fork 3 are on the same plane at this time, the semi-circular claw of the second fork 3 can smoothly enter the gap. The semi-circular claws of the two forks form a half-shaped structure. Then, the driving mechanism drives the second fork 3 to move upward relative to the second fork 2, and the electrode cap is removed.

[0033] The driving mechanism of this utility model includes a lifting bracket 7, a lifting mechanism, and a translation cylinder 8. The lifting bracket 7 is connected to an elastic lifting guide mechanism for keeping the lifting bracket 7 on the mounting base plate 1. The translation cylinder 8 is mounted on the lifting bracket 7 and its driving end is connected to the second fork 3. The translation cylinder 8 pushes the second fork 3 closer to or away from the first fork 2. The lifting mechanism pushes the lifting bracket 7 to move along the electrode cap removal direction to remove the electrode cap.

[0034] To maintain the stability of the second fork 3 on the lifting bracket 7, the movement position of the second fork 3 is determined by controlling the lifting bracket. In this invention, the lifting bracket 7 has a fork plate pressure plate 9 on the side of the second fork 3 parallel to the driving direction of the translation cylinder. The fork plate pressure plate 9 ensures that the second fork 3 is tightly against the surface of the lifting bracket 7. The driving end of the lifting mechanism abuts against the lower surface of the lifting bracket 7, including a driving cylinder 10 and a linkage mechanism connected to the driving end of the driving cylinder 10. The linkage mechanism on the side near the lifting bracket 7 is hinged to the mounting base plate 1 via a rotary pin, and a driving arm 11 is connected to the corresponding linkage. The driving arm 11 rotates synchronously with the corresponding linkage. The radius of the distance between the driving arm 11 and the abutment position of the lifting bracket 7 and the rotation center varies at different rotation angles. The driving cylinder 10 drives the linkage mechanism to rotate, which in turn drives the driving arm 11 to rotate, thus realizing the lifting and lowering movement of the lifting bracket 7. Figure 5 As shown, during the removal of the electrode cap, the distance "L" shown in the figure gradually increases due to the movement of the second fork 3. When the size of "L" is equal to the gap formed between the end face of the electrode cap 4 and the electrode handle 6 (or electrode grip), the electrode cap 4 is removed as "L" further increases.

[0035] The elastic lifting guide mechanism of this utility model includes a lifting guide column 16 fixedly connected to the lifting bracket 7, and a guide seat 17 fixedly installed below the mounting base plate 1. The end of the lifting guide column 16 passes through the guide seat 17. A lifting guide column return spring 18 connected to the guide seat 17 is provided at the end of the lifting guide column 16. The lifting guide column return spring 18 provides a pulling force opposite to the upward direction for the lifting guide column 16. After the electrode cap 4 is removed, the lifting bracket 7 is reset by the lifting guide column return spring 18, so that the second fork 3 and the first fork 2 are back on the same plane, realizing automatic reset after disassembly, so as to carry out the disassembly operation of moving the electrode cap downward. The reset is achieved by the pulling force of the lifting guide column return spring 18, which can realize the automatic reset of the lifting bracket and also protect the lifting bracket from further movement when the electrode cap is detached, thereby improving the stability of the structure.

[0036] The linkage mechanism of this utility model includes a linkage support 12 connected to the drive end of the drive cylinder 10, and a linkage group symmetrically arranged about the center of the linkage support 12. Each linkage group includes a first linkage 13 and a second linkage 14. The first linkage 13 is hinged to the linkage support 12. The two ends of the second linkage 14 are respectively hinged to the corresponding first linkage 13 and the mounting base plate 12. The drive arm 11 is fixedly connected to the second linkage 14 to form an integral structure. The drive arm 11 is driven to rotate by the rotation of the second linkage 14.

[0037] The mounting base plate 1 of this utility model is provided with a connecting rod support guide post 15 at a position corresponding to the connecting rod support 12 for guiding the lifting and lowering of the connecting rod support 12, so as to ensure smooth lifting and lowering and realize the smooth disassembly of the electrode cap.

[0038] Furthermore, the mounting base plate 1 of this utility model is connected to a balancing and fixing mechanism for overall installation and fixing of the disassembly machine. The parallel fixing mechanism includes a cap removal machine mounting plate 19 and a balancing guide seat 20. The balancing guide seat 20 is fixedly connected to the cap removal machine mounting plate 19. A balancing guide post 21 is inserted into the balancing guide seat 20 and is inserted into the mounting base plate 1. A balancing spring 22 is provided on the balancing guide post 21. The two ends of the balancing spring 22 are respectively fixed to the plate surfaces of the balancing guide seat 20 and the mounting base plate 1. The mounting base plate 1 is limited by the locking screw 23 at the end. The balancing spring compensates for the displacement of the fork opening during the process of removing the electrode cap, so that the mounting base plate 1 and the first fork 2 can move upward a certain distance during the removal of the electrode cap, avoiding direct rigid disassembly. After the disassembly is completed, the balancing spring is used to reset the mounting base plate and maintain the stability of the mounting base plate position.

[0039] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A parallel opening electrode cap removal machine, characterized in that, The device includes a first fork (2) and a second fork (3) disposed on the same mounting base (1) plane. The first fork (2) and the second fork (3) each have several cap removal positions (5) on the side near the electrode cap (4) for cooperating with electrode caps (4) of different specifications. The cap removal positions (5) extend into the gap between the electrode cap (4) and the electrode handle (6). The second fork (3) is connected to a drive mechanism for moving the second fork (3) relative to the first fork (2) in the horizontal direction and the direction of electrode cap removal. The second fork (3) is moved relative to the first fork (2) by the drive mechanism to remove the electrode cap (4).

2. The parallel opening electrode cap removal machine according to claim 1, characterized in that, The driving mechanism includes a lifting bracket (7), a lifting mechanism, and a translation cylinder (8). The lifting bracket (7) is connected to an elastic lifting guide mechanism for keeping the lifting bracket (7) on the mounting base plate (1). The translation cylinder (8) is mounted on the lifting bracket (7) and its driving end is connected to the second fork (3). The translation cylinder (8) pushes the second fork (3) closer to or further away from the first fork (2). The lifting mechanism pushes the lifting bracket (7) to move along the electrode cap removal direction to remove the electrode cap.

3. The parallel opening electrode cap removal machine according to claim 2, characterized in that, The lifting bracket (7) has a fork plate pressure plate (9) on the side of the second fork (3) parallel to the driving direction of the translation cylinder, so that the second fork (3) is pressed tightly against the surface of the lifting bracket (7) by the fork plate pressure plate (9).

4. The parallel opening electrode cap removal machine according to claim 2, characterized in that, The driving end of the lifting mechanism abuts against the lower surface of the lifting bracket (7), including a driving cylinder (10) and a linkage mechanism connected to the driving end of the driving cylinder (10). The linkage mechanism is hinged to the mounting base plate (1) on the side of the lifting bracket (7), and a driving arm (11) is connected to the corresponding linkage. The driving arm (11) rotates synchronously with the corresponding linkage. The radius of the distance between the driving arm (11) and the lifting bracket (7) at different rotation angles is different. The driving cylinder (10) drives the linkage mechanism to rotate, thereby driving the driving arm (11) to rotate and realizing the lifting and lowering movement of the lifting bracket (7).

5. A parallel opening electrode cap removal machine according to claim 4, characterized in that, The linkage mechanism includes a linkage support (12) connected to the drive end of the drive cylinder (10), and a linkage group symmetrically arranged about the center of the linkage support (12). Each linkage group includes a first linkage (13) and a second linkage (14). The first linkage (13) is hinged to the linkage support (12), and the two ends of the second linkage (14) are respectively hinged to the corresponding first linkage (13) and the mounting base (1). The drive arm (11) is fixedly connected to the second linkage (14) to form an integral structure. The drive arm (11) is driven to rotate by the rotation of the second linkage (14).

6. The parallel opening electrode cap removal machine according to claim 5, characterized in that, The mounting base plate (1) is provided with a connecting rod support guide post (15) at a position corresponding to the connecting rod support (12) for guiding the lifting and lowering of the connecting rod support (12).

7. A parallel opening electrode cap removal machine according to claim 2, characterized in that, The elastic lifting guide mechanism includes a lifting guide column (16) fixedly connected to the lifting bracket (7) and a guide seat (17) fixedly installed below the mounting base plate (1). The end of the lifting guide column (16) passes through the guide seat (17). A lifting guide column return spring (18) connected to the guide seat (17) is provided at the end of the lifting guide column (16). The lifting guide column return spring (18) provides a pulling force to the lifting guide column (16) in the opposite direction of the upward direction. After the electrode cap (4) is removed, the lifting bracket (7) is reset by the lifting guide column return spring (18), so that the second fork (3) and the first fork (2) are in the same plane again.

8. A parallel opening electrode cap removal machine according to claim 1, characterized in that, The mounting base plate (1) is connected to a balancing and fixing mechanism for overall installation and fixing of the disassembly machine. The balancing and fixing mechanism includes a hat-removing machine mounting plate (19) and a balancing guide seat (20). The balancing guide seat (20) is fixedly connected to the hat-removing machine mounting plate (19). A balancing guide post (21) is inserted inside the balancing guide seat (20). The balancing guide post (21) is inserted on the mounting base plate (1). A balancing spring (22) is provided on the balancing guide post (21). The two ends of the balancing spring (22) are fixed on the plate surfaces of the balancing guide seat (20) and the mounting base plate (1), respectively. The mounting base plate (1) is limited by the locking screw (23) at the end.

9. A parallel opening electrode cap removal machine according to claim 1, characterized in that, The cap removal positions (5) are all semi-circular concave structures, and thin semi-circular claws that fit the gap between the electrode cap and the electrode handle are provided at the bottom of the concave cavity.

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