Welding gun part replacement equipment

Abstract

The invention belongs to the technical field of contact tube replacement, and discloses welding gun part replacement equipment. The welding gun part replacement equipment comprises a mounting frame, a detection mechanism, a contact tube cleaning mechanism, a contact tube dismounting and mounting mechanism and a transfer mechanism, the detection mechanism, the contact tube cleaning mechanism and the contact tube dismounting and mounting mechanism are all mounted on the mounting frame, the detection mechanism is used for detecting the state of a welding gun, and the contact tube cleaning mechanism is used for cleaning a contact tube on the welding gun. The contact tube dismounting mechanism is used for dismounting the contact tube and mounting a new contact tube on the welding gun; and the transfer mechanism is in communication connection with the detection mechanism and can clamp the welding gun to switch positions in the detection mechanism, the contact tube cleaning structure and the contact tube dismounting and mounting mechanism. According to the welding gun part replacement equipment, through the arrangement of the detection mechanism and the contact tube cleaning mechanism, it is guaranteed that the contact tube is not affected by dirt in the subsequent contact tube dismounting process, and the situation that the contact tube is placed into the contact tube dismounting mechanism due to the dirt of the contact tube is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of contact nozzle replacement, and in particular to welding gun parts replacement equipment. Background Art

[0002] During the product production process, welding operations need to be performed on some parts and components. The more common method is to use gas shielded welding (such as carbon dioxide shielded welding) for welding. At this time, a welding gun is needed to implement it. Generally, a welding gun includes a conductive tip and a nozzle, and the conductive tip and the nozzle are installed at the end of the welding gun in a threaded connection manner; after the welding gun has been working for a period of time, the conductive tip and the nozzle will be worn, especially the conductive tip, which will have a higher degree of wear. The worn conductive tip will affect the welding quality. Severely poor welding quality will cause market / customer complaints, lead to product recalls, and incur high compensation costs, and may even lead to the company's bankruptcy; therefore, every time the welding gun has been working for a period of time, the conductive tip needs to be replaced. In the actual production process, the conductive tip generally needs to be replaced every 2 to 4 hours. In existing production, most of the contact nozzles are replaced manually. However, due to the frequent replacement of contact nozzles, the entire automatic arc welding production line needs to be stopped for manual replacement, which will inevitably reduce the efficiency of the production line. At the same time, since the welding length of the welding gun at each position is different, the unified replacement method of stopping the line will cause some contact nozzles to be replaced prematurely before their service life, thereby increasing production costs. In addition, after manual replacement, the conductive nozzle is often not securely installed. On the one hand, the secure installation of the conductive nozzle will affect the service life of the conductive nozzle and accelerate the loss of the conductive nozzle. On the other hand, it will also affect the welding quality and pose certain safety hazards. In addition, manual management of the replacement of the conductive nozzle may result in missed replacements or uncertain replacement times.

[0003] In the prior art, the device for automatically removing the conductive nozzle does not process the conductive nozzle before removing it. When removing the conductive nozzle, the outer diameter of the conductive nozzle often changes due to dirt on the outside of the conductive nozzle. When removing the conductive nozzle, it cannot be placed in the corresponding fixture, causing the automatic replacement equipment to jam.

[0004] Therefore, it is urgent to design a welding gun parts replacement device to solve the above problems. Summary of the invention

[0005] An object of the present invention is to provide a welding gun parts replacement device, which can ensure the continuity of the conductive nozzle during the disassembly and assembly process and avoid the occurrence of equipment jamming.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] Welding gun parts replacement equipment, including:

[0008] Mounting frame;

[0009] A detection mechanism, a contact nozzle cleaning mechanism and a contact nozzle disassembly mechanism installed on the mounting frame, wherein the detection mechanism is used to detect the state of the welding gun, the contact nozzle cleaning mechanism is used to clean the contact nozzle on the welding gun, and the contact nozzle disassembly mechanism is used to remove the contact nozzle and install a new contact nozzle on the welding gun;

[0010] The transfer mechanism is communicatively connected with the detection mechanism and can clamp the welding gun to switch positions among the detection mechanism, the conductive nozzle cleaning mechanism and the conductive nozzle disassembly and assembly mechanism.

[0011] As an optional solution, it also includes a driving mechanism, the driving mechanism is installed on the mounting frame, and the conductive nozzle cleaning mechanism includes:

[0012] An installation component, wherein a first installation cavity is formed inside, one end of the installation component is pivotally connected to the installation frame, and the other end is transmission-connected to the driving mechanism, and the driving mechanism can drive the installation component to rotate through gears;

[0013] A plurality of first brush heads are installed on the inner wall of the first installation cavity at intervals along the circumferential direction, and the transfer mechanism can extend the welding gun between the plurality of first brush heads.

[0014] As an optional solution, the contact nozzle disassembly and assembly mechanism includes a contact nozzle disassembly mechanism and a contact nozzle installation mechanism, and the contact nozzle disassembly mechanism includes:

[0015] A first clamping assembly, one end of which can loosen or clamp the conductive nozzle, and the other end of which is transmission-connected to the output end of the driving mechanism, and the driving mechanism can drive the first clamping assembly to rotate.

[0016] As an optional solution, the first clamping assembly and the mounting frame are floatingly arranged.

[0017] As an optional solution, the conductive nozzle mounting mechanism includes a ratchet assembly and a rotating table, the ratchet assembly is mounted on the mounting frame, the rotating table is connected to the output end of the ratchet assembly, a plurality of conductive nozzle tooling are floatingly arranged on the rotating table, a first clutch is connected to the bottom of the conductive nozzle tooling, a second clutch is floatingly connected to the output end of the driving mechanism, the driving mechanism can drive the second clutch to rotate, and the driving mechanism can drive the rotating table to rotate intermittently so that the first clutch located above the second clutch is pressed down and connected to the second clutch.

[0018] As an optional solution, the nozzle is threadedly connected to the main body of the welding gun and is located outside the conductive nozzle. The welding gun parts replacement device also includes a nozzle disassembly and assembly mechanism, and the nozzle disassembly and assembly mechanism includes:

[0019] A second clamping assembly, one end of which can loosen or clamp the nozzle and is arranged to float with the mounting frame, and the driving mechanism can drive the second clamping assembly to rotate.

[0020] As an optional solution, the nozzle disassembly and assembly mechanism further includes a nozzle cleaning assembly, and the nozzle cleaning assembly includes:

[0021] A vertical driving member, mounted on the lower side of the second clamping assembly;

[0022] A plurality of second brush heads are all installed at the output end of the vertical driving member. The vertical driving member can drive the plurality of second brush heads to move in a vertical direction, and the disassembled nozzle can extend between the plurality of second brush heads.

[0023] As an optional solution, the nozzle disassembly and assembly mechanism also includes an auxiliary support assembly, which includes a plurality of first elastic members, one end of each of which is mounted on the mounting frame and located below the second clamping assembly, and the other end of each of which is connected to the second clamping assembly.

[0024] As an optional solution, the auxiliary support assembly also includes a connecting plate, and the end of the first elastic member facing away from the mounting frame is connected to the connecting plate. The connecting plate is located below the second clamping assembly and is connected to the clamping assembly through a plurality of first support rods. The vertical drive member is installed on the connecting plate.

[0025] As an optional solution, the auxiliary support assembly further includes a return cylinder, which is mounted on the mounting frame, and an output end of the return cylinder is connected to the connecting plate, and the return cylinder is configured to apply an upward force to the connecting plate when the first elastic member is compressed to a preset compression amount.

[0026] The beneficial effects of the present invention are:

[0027] The invention provides a welding gun parts replacement device. A detection mechanism is arranged on a mounting frame. Before a transfer mechanism clamps the welding gun and arrives at a conductive nozzle disassembling mechanism to disassemble the conductive nozzle, the welding gun must first arrive at the detection mechanism to detect the state of the end of the welding gun. When the detection device detects that the conductive nozzle exists (the conductive nozzle must be cleaned before disassembly to avoid dirt on the outer circle side of the conductive nozzle affecting the conductive nozzle from being smoothly inserted into the conductive nozzle disassembling mechanism), the detection mechanism first clamps the welding gun and cleans the surface of the conductive nozzle in a conductive nozzle cleaning mechanism. After cleaning, dirt on the surface of the conductive nozzle is removed. Then, the welding gun arrives at the conductive nozzle disassembling mechanism along with the transfer mechanism to disassemble the conductive nozzle. At this time, the size of the outer part of the conductive nozzle is accurate and can be inserted into the corresponding clamping device of the conductive nozzle disassembling mechanism. The arrangement of the detection mechanism and the conductive nozzle cleaning mechanism ensures that the conductive nozzle is not affected by dirt in the subsequent disassembly process of the conductive nozzle, so as to avoid the conductive nozzle being affected by dirt in the conductive nozzle disassembling mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is an exploded view of a welding gun provided by an embodiment of the present invention;

[0029] Figure 2 It is a structural schematic diagram of a welding gun parts replacement device provided by an embodiment of the present invention;

[0030] Figure 3 It is a structural schematic diagram of a conductive nozzle cleaning mechanism and a driving mechanism provided by an embodiment of the present invention;

[0031] Figure 4 is a cross-sectional view of a conductive nozzle cleaning mechanism provided by an embodiment of the present invention;

[0032] Figure 5 It is a schematic structural diagram of a driving mechanism and a nozzle disassembly and assembly mechanism provided by an embodiment of the present invention;

[0033] Figure 6 is a cross-sectional view of a nozzle disassembly and assembly mechanism provided by an embodiment of the present invention;

[0034] Figure 7 It is a structural schematic diagram of a driving mechanism and a contact nozzle mounting mechanism provided by an embodiment of the present invention;

[0035] Figure 8 It is a structural schematic diagram of a conductive nozzle disassembly mechanism provided in an embodiment of the present invention.

[0036] In the figure:

[0037] 10. Mounting frame; 11. Bottom plate; 12. Middle plate; 13. Upper plate; 14. Upper cover; 15. Opening and closing drive member; 16. Support column;

[0038] 20. Driving mechanism; 21. Main driving member; 22. Transmission assembly; 221. First output member; 222. Second output member; 223. Third output member; 224. Fourth output member; 225. Transmission gear;

[0039] 30. Conductive nozzle cleaning mechanism; 31. Mounting assembly; 311. First mounting cavity; 32. First brush head; 33. Position limiting fixture; 34. Clamping ring; 35. First base; 351. Support plate; 352. Enclosure; 353. Cover plate; 36. Second support rod;

[0040] 40. Conductive nozzle disassembly mechanism; 41. First clamping assembly; 42. Fourth elastic member; 43. Base plate; 44. Support column;

[0041] 50. Nozzle disassembly and assembly mechanism; 51. Second clamping assembly; 511. Clamping block; 512. Mounting arm; 513. Second mounting cavity; 52. Nozzle cleaning assembly; 521. Vertical driving member; 522. Second brush head; 53. Auxiliary support assembly; 531. First elastic member; 532. Connecting plate; 533. First support rod; 534. Return cylinder; 54. Second base; 55. Piston;

[0042] 60. Conductive nozzle installation mechanism; 61. Ratchet assembly; 62. Rotating table; 63. First clutch member; 64. Second clutch member; 65. Second elastic member; 66. Third elastic member; 67. Conductive nozzle tooling;

[0043] 70. Testing institutions;

[0044] 80. First clamping mechanism; 81. First bidirectional driving member; 82. First clamping claw;

[0045] 90. Second clamping mechanism; 91. Second bidirectional driving member; 92. Second clamping claw;

[0046] 100, welding gun; 110, main body; 120, conductive tip; 121, limiting groove; 130, nozzle. DETAILED DESCRIPTION

[0047] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0048] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" 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, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0050] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0051] like Figure 1 As shown, the welding gun 100 includes a body 110 and a conductive tip 120 threadedly connected to the end of the body 110. In the prior art, the device for automatically disassembling the conductive tip 120 does not process the conductive tip 120 before disassembling it. When disassembling the conductive tip 120, the outer diameter of the conductive tip 120 often changes due to dirt (welding slag, etc.) on the outside of the conductive tip 120. When disassembling the conductive tip 120, it cannot be put into the corresponding fixture, causing the automatic replacement device to jam.

[0052] In order to solve the above problems, this embodiment provides a welding gun parts replacement device, which can ensure the continuity of the conductive tip 120 during the disassembly and assembly process, and avoid the occurrence of equipment jams. Figure 2 and Figure 3 As shown, the welding gun parts replacement device includes a mounting frame 10, a detection mechanism 70, a contact nozzle cleaning mechanism 30, and a contact nozzle disassembly mechanism (not numbered, for example). Figure 2The conductive nozzle disassembly mechanism 40 is a combination of the conductive nozzle installation mechanism 60 and the transfer mechanism, the detection mechanism 70, the conductive nozzle cleaning mechanism 30 and the conductive nozzle disassembly mechanism are all installed on the mounting frame 10, the detection mechanism 70 is used to detect the state of the welding gun 100, the conductive nozzle cleaning mechanism 30 is used to clean the conductive nozzle 120 on the welding gun 100, and the conductive nozzle disassembly mechanism is used to remove the conductive nozzle 120 and install a new conductive nozzle 120 on the welding gun 100; the transfer mechanism is communicatively connected with the detection mechanism 70 and can clamp the welding gun 100 to switch positions among the detection mechanism 70, the conductive nozzle cleaning mechanism 30 and the conductive nozzle disassembly mechanism.

[0053] The above welding gun parts replacement device is provided with a detection mechanism 70 on the mounting frame 10. When the transfer mechanism clamps the welding gun 100 and arrives at the conductive nozzle disassembly mechanism to disassemble the conductive nozzle 120, it must first reach the detection mechanism 70 to detect the state of the end of the welding gun 100. When the detection mechanism 70 detects that the conductive nozzle 120 exists (the conductive nozzle 120 must be cleaned before disassembly to avoid dirt on the outer circumference of the conductive nozzle 120 affecting the conductive nozzle 120 and preventing it from being smoothly inserted into the conductive nozzle disassembly mechanism), the detection mechanism 70 first clamps the welding gun 100 before the conductive nozzle is cleaned. The surface of the conductive tip 120 is cleaned in the cleaning mechanism 30. After cleaning, the dirt on the surface of the conductive tip 120 is removed, and then the welding gun 100 arrives at the conductive tip disassembly mechanism along with the transfer mechanism to disassemble the conductive tip 120. At this time, the outer size of the conductive tip 120 is accurate and can be inserted into the corresponding clamp of the conductive tip disassembly mechanism. The setting of the detection mechanism 70 and the conductive tip cleaning mechanism 30 ensures that the conductive tip 120 is not affected by dirt during the subsequent disassembly process, thereby avoiding the conductive tip 120 being affected by dirt on the conductive tip 120 and being placed in the conductive tip disassembly mechanism.

[0054] It should be noted that when it is detected that there is no conductive tip outside the conductive tip 120 , the transfer mechanism does not need to clamp the welding gun 100 to stay at the conductive tip cleaning mechanism 30 , and can directly reach the conductive tip disassembly and assembly mechanism to install the conductive tip 120 .

[0055] Optionally, the transfer mechanism is a manipulator, and a clamp is provided at the free end of the manipulator. The clamp can clamp the body 110 and extend the end of the welding gun 100 into a corresponding mechanism for processing the conductive nozzle 120.

[0056] Optionally, the detection mechanism 70 is a through-beam photoelectric switch, which can detect the height, size and other characteristics of the conductive nozzle 120 to determine whether the conductive nozzle 120 exists. Only when the conductive nozzle 120 exists can the disassembly action and the subsequent installation action of the conductive nozzle 120 be performed. The through-beam photoelectric switch is a U-shaped part, and the transfer mechanism clamps the welding gun 100 and places it into the U-shaped part to make a judgment based on the blocking of light.

[0057] Alternatively, if Figure 2 As shown, the mounting frame 10 includes a plurality of pillars 16 and an upper plate 13, a middle plate 12 and a bottom plate 11 which are spaced apart from each other from top to bottom with the plurality of pillars 16. The parts in each mechanism are installed on the upper plate 13, the middle plate 12 or the bottom plate 11 according to the requirements.

[0058] Alternatively, if Figure 2-Figure 4 As shown, the welding gun parts replacement device also includes a driving mechanism 20, which is installed on the mounting frame 10. The conductive nozzle cleaning mechanism 30 includes a mounting assembly 31 and a plurality of first brush heads 32. A first mounting cavity 311 is formed inside the mounting assembly 31. One end of the mounting assembly 31 is pivotally connected to the mounting frame 10, and the other end is transmission-connected to the driving mechanism 20. The driving mechanism 20 can drive the mounting assembly 31 to rotate; the plurality of first brush heads 32 are installed on the inner wall of the first mounting cavity 311 at intervals along the circumferential direction, and the transfer mechanism can extend the welding gun 100 between the plurality of first brush heads 32. Through the above arrangement, the driving mechanism 20 drives the mounting assembly 31 to rotate. When the transfer device extends the conductive nozzle 120 into the first mounting cavity 311, it also extends between the plurality of first brush heads 32. As the plurality of first brush heads 32 rotate with the mounting assembly 31, the plurality of first brush heads 32 clean the conductive nozzle 120.

[0059] Alternatively, if Figure 2 and Figure 3 As shown, the driving mechanism 20 includes a main driving member 21 and a transmission assembly 22, the transmission assembly 22 includes a second output member 222 and a plurality of transmission gears 225. By way of example, the main driving member 21 is installed on the lower layer of the middle plate 12, the output end of the main driving member 21 passes through the middle plate 12, the first of the plurality of transmission gears 225 is fixedly connected to the output end of the main driving member 21, the remaining transmission gears 225 are meshed in sequence, the second output member 222 is meshed with the last transmission gear 225, the second output member 222 is coaxially fixed to the lower end of the mounting assembly 31, and the rotation of the mounting assembly 31 is realized through the above arrangement.

[0060] Among them, see Figure 2-Figure 4 The conductive nozzle cleaning mechanism 30 also includes a first base 35, four second support rods 36 and a clamping ring 34. The bottoms of the four second support rods 36 are connected to the middle plate 12. The first base 35 includes a support plate 351, a surrounding plate 352 and a cover plate 353. The support plate 351 is installed on the top of the four second support rods 36. The surrounding plate 352 is annular and connected to the support plate 351. The cover plate 353 is connected to the top of the surrounding plate 352. The support plate 351 and the cover plate 353 are both opened for avoidance. The two clamping rings 34 are installed on the inner wall of the surrounding plate 352 with interference fit and clamp part of the installation component 31 between the two clamping rings 34 to fix the installation component 31.

[0061] Optionally, the conductive nozzle cleaning mechanism 30 also includes a limiting jig 33, which is installed on the top of the cover plate 353. The limiting jig 33 has a cavity with the same shape as the connection position of the main body 110 and the conductive nozzle 120, and when the main body 110 is placed into the limiting jig 33, it has a limiting effect on the main body 110 in the vertical direction. Therefore, the limiting jig 33 can ensure the accuracy of the radial position of the conductive nozzle 120, and can ensure the accuracy of the position in the vertical direction, thereby ensuring the effectiveness of cleaning the conductive nozzle 120.

[0062] Alternatively, if Figure 4 As shown, a limiting protrusion for limiting the second output member 222 is provided at the bottom of the mounting assembly 31 to fix the second output member 222 .

[0063] It should be noted that after cleaning the conductive nozzle 120 , it is necessary to inspect the outer periphery of the conductive nozzle 120 by the inspection mechanism 70 , and then the conductive nozzle 120 can be disassembled after passing the inspection.

[0064] like Figure 1 As shown, the welding gun 100 also includes a nozzle 130, which is threadedly connected to the main body of the welding gun 100 and is located outside the conductive nozzle 120. That is, before the conductive nozzle 120 is disassembled, the nozzle 130 needs to be disassembled in advance. If the nozzle 130 is disassembled manually, the efficiency is low and it is easy to get injured.

[0065] In order to solve the above problems, the welding gun parts replacement device also includes a nozzle disassembly and assembly mechanism 50, and the nozzle disassembly and assembly mechanism 50 includes a second clamping assembly 51, one end of the second clamping assembly 51 can loosen or clamp the nozzle 130 and is arranged to float with the mounting frame 10, and the driving mechanism 20 can drive the second clamping assembly 51 to rotate. Through the above arrangement, the transfer mechanism first puts the welding gun 100 into the second clamping assembly 51, and the second clamping assembly 51 clamps the nozzle 130, and is driven to rotate by the driving mechanism 20, so that the nozzle 130 rotates relative to the body 110 and then the nozzle 130 is removed. During the removal process, due to the pitch problem, the nozzle 130 moves downward while rotating. Since the second clamping assembly 51 is floatingly connected to the mounting frame 10 (specifically the bottom plate 11), the second clamping assembly 51 has a certain space to sink. The power for clamping and loosening the second clamping assembly 51 adopts compressed air, and the action is controlled by an electromagnetic valve.

[0066] Alternatively, see Figure 2 and Figure 5The nozzle disassembly and assembly mechanism 50 further includes an auxiliary support assembly 53, which includes a plurality of first elastic members 531, one end of each of which is mounted on the mounting frame 10 (bottom plate 11) and is located below the second clamping assembly 51, and the other end of each of which is connected to the second clamping assembly 51. Through the above arrangement, a floating connection between the second clamping assembly 51 and the mounting frame 10 is achieved.

[0067] Specifically, if Figure 5 As shown, the tops of the plurality of first elastic members 531 are commonly connected to a connecting plate 532, the upper side of the connecting plate 532 is mounted with a plurality of first support rods 533, the tops of the plurality of first support rods 533 are mounted with a second base 54, the second clamping assembly 51 is mounted inside the second base 54, and one transmission gear 225 is coaxially connected to the bottom of the second clamping assembly 51 as the first output member 221 of the driving mechanism 20. The second base 54 has a similar structure to the first base 35, and has a cavity inside.

[0068] Alternatively, if Figure 5 and Figure 6 As shown, the second clamping assembly 51 includes a clamping block 511 and a mounting arm 512. A piston 55 is disposed in the second base 54. The piston 55 can move up and down in the second base 54 under the action of the gas in the second base 54. Figure 6 In this state, the piston 55 moves upward, and the inclined surface of the piston 55 presses against the clamping block 511, so that the mounting arm 512 is tightened inward, driving the multiple clamping blocks 511 to clamp the nozzle 130. In other embodiments, the second clamping assembly 51 can also be in the form of a pair of clamping claws, which is not limited here.

[0069] Therefore, after the second clamping assembly 51 clamps the nozzle 130, as the first output member 221 rotates, the nozzle 130 is rotated away from the main body 110. At the same time, the nozzle 130 drives the second clamping assembly 51 to move downward. The setting of the multiple first elastic members 531 provides a certain floating amount for the sinking of the nozzle 130.

[0070] Further, see Figure 5 and Figure 6The auxiliary support assembly 53 further includes a return cylinder 534, which is mounted on the mounting frame 10. The output end of the return cylinder 534 is connected to the connecting plate 532. The return cylinder 534 is configured to apply an upward force to the connecting plate 532 when the first elastic member 531 is compressed to a preset compression amount. It can be understood that since the size of the nozzle 130 is larger than the size of the conductive nozzle 120, the length of the thread to be twisted is also larger, resulting in a larger floating stroke of the second clamping assembly 51. The return cylinder 534 provides an upward force when the first elastic member 531 is compressed to a larger amount, ensuring that the nozzle 130 is disassembled and the welding gun 100 is removed by the transfer mechanism. The nozzle 130 can return to its original position. Since the nozzle 130 does not need to be frequently replaced, the nozzle 130 that returns to its original position can wait for the welding gun 100 to be reinstalled at this position after the conductive nozzle 120 is replaced. During installation, the total drive member 21 can be reversed.

[0071] Alternatively, if Figure 5 and Figure 6 As shown, the nozzle disassembly and assembly mechanism 50 also includes a nozzle cleaning assembly 52, which includes a vertical drive member 521 and a plurality of second brush heads 522. The vertical drive member 521 is installed on the lower side of the second clamping assembly 51 (specifically, it is installed on the connecting plate 532); the plurality of second brush heads 522 are all installed on the output end of the vertical drive member 521, and the vertical drive member 521 can drive the plurality of second brush heads 522 to move in the vertical direction, and the disassembled nozzle 130 can extend between the plurality of second brush heads 522. It can be understood that a second installation cavity 513 is formed inside the second clamping assembly 51, and the vertical drive member 521 can drive the plurality of second brush heads 522 to extend into the second installation cavity 513. With the rotation of the first output member 221, the nozzle 130 is cleaned. After the cleaning is completed, the vertical drive member 521 drives the plurality of second brush heads 522 to descend and wait for the next cleaning.

[0072] Alternatively, if Figure 2 As shown, the welding gun parts replacement equipment also includes a first clamping mechanism 80, which includes a first bidirectional driving member 81 and two first clamping jaws 82. The first bidirectional driving member 81 is installed on the upper plate 13, and the two first clamping jaws 82 are respectively connected to the two output ends of the first bidirectional driving member 81 and are located above the second clamping assembly 51. The first bidirectional driving member 81 can drive the two first clamping jaws 82 to move closer or farther away and is used to clamp the upper part of the second clamping assembly 51. Through the above arrangement, it can be ensured that when the nozzle 130 is rotated, the main body 110 is clamped by the two first clamping jaws 82, thereby preventing the manipulator from being subjected to force.

[0073] Alternatively, if Figure 5 and Figure 6As shown, the clamp block 511 is detachably connected to the mounting arm 512. Through the above arrangement, different clamp blocks 511 can be replaced to adapt to different sizes of parts to be clamped (for example, the diameters of the nozzle 130 and the conductive nozzle 120 are different, and the same mechanism can be used to replace the clamp block 511).

[0074] Combine the following Figure 2 , Figure 7 as well as Figure 8 The structure of the conductive nozzle disassembly and assembly mechanism is described. The conductive nozzle disassembly and assembly mechanism includes a conductive nozzle disassembly mechanism 40 and a conductive nozzle installation mechanism 60. The conductive nozzle disassembly mechanism 40 includes a first clamping assembly 41. One end of the first clamping assembly 41 can loosen or clamp the conductive nozzle 120, and the other end is connected to the output end of the driving mechanism 20. The driving mechanism 20 can drive the first clamping assembly 41 to rotate, and the first clamping assembly 41 is arranged to float with the mounting frame 10. Through the above arrangement, the transfer mechanism first puts the welding gun 100 into the first clamping assembly 41, and the first clamping assembly 41 clamps the conductive nozzle 120, and is driven to rotate by the driving mechanism 20, so that the conductive nozzle 120 rotates relative to the body 110 and then the conductive nozzle 120 is removed. During the removal process, due to the pitch problem, the conductive nozzle 120 moves downward while rotating. Since the first clamping assembly 41 is connected to the mounting frame 10 in a floating manner, the sinking of the first clamping assembly 41 has a certain space. The power for clamping and loosening the first clamping assembly 41 is compressed air.

[0075] The clamping principle of the first clamping assembly 41 is the same as the clamping principle of the second clamping assembly 51 , and will not be elaborated herein.

[0076] Since the screwing distance of the conductive nozzle 120 is relatively small, in the conductive nozzle removal mechanism 40 , the fourth elastic member 42 can be used to form a floating setting for the outer member on which the first clamping assembly 41 is installed.

[0077] Among them, Figure 8 As shown, the lower end of the fourth elastic member 42 is supported by a base plate 43 , and the lower side of the base plate 43 is supported by four support columns 44 , and the four support columns 44 are indirectly supported on the middle plate 12 .

[0078] Among them, see Figure 3 and Figure 8 , one of the transmission gears 225 as the third output member 223 of the driving mechanism 20 is fixedly connected to the lower end of the first clamping assembly 41. Specifically, the two can be connected by a key.

[0079] In addition, Figure 8As shown, the welding gun parts replacement equipment also includes a second clamping mechanism 90, which includes a second bidirectional driving member 91 and two second clamping jaws 92. The second bidirectional driving member 91 is installed on the upper plate 13, and the two second clamping jaws 92 are respectively connected to the two output ends of the second bidirectional driving member 91 and are located above the first clamping assembly 41. The second bidirectional driving member 91 can drive the two second clamping jaws 92 to move closer or farther away and is used to clamp the part located above the first clamping assembly 41. Through the above arrangement, it can be ensured that when the conductive nozzle 120 is rotated, the main body 110 is clamped by the two second clamping jaws 92, thereby preventing the manipulator from being subjected to force.

[0080] Alternatively, if Figure 7 As shown, the conductive nozzle mounting mechanism 60 includes a ratchet assembly 61 and a rotating table 62, the ratchet assembly 61 is mounted on the mounting frame 10, the rotating table 62 is connected to the output end of the ratchet assembly 61, a plurality of conductive nozzle fixtures 67 are floatingly arranged on the rotating table 62, a first clutch 63 is connected to the bottom of the conductive nozzle fixture 67, the output end of the driving mechanism 20 is floatingly connected to the second clutch 64, the driving mechanism 20 can drive the second clutch 64 to rotate, and the driving mechanism 20 can drive the rotating table 62 to rotate intermittently so that the first clutch 63 located above the second clutch 64 is pressed down and connected to the second clutch 64. It can be understood that one of the transmission gears 225 serves as the fourth output member 224 of the driving mechanism 20, and the second clutch member 64 is floatingly connected to the fourth output member 224 through the third elastic member 66. When the body 110 is transferred to the conductive nozzle fixture 67 by the transfer mechanism and inserted into the conductive nozzle 120 thereon, the conductive nozzle 120 sinks, so that the first clutch member 63 and the second clutch member 64 engage, and the main driving member 21 drives the conductive nozzle fixture 67 to rotate, so that the new conductive nozzle 120 is installed on the body 110. When the transfer mechanism removes the welding gun 100, the second elastic member 65 lifts the conductive nozzle fixture 67, that is, the first clutch member 63 to separate it from the second clutch member 64, and the ratchet assembly 61 drives the rotating table 62 to rotate so that the adjacent first clutch member 63 corresponds to the second clutch member 64.

[0081] Alternatively, if Figure 1 As shown, two limiting grooves 121 are provided on the circumference of the conductive nozzle 120, and the limiting groove 121 is a plane. A groove having the same shape as the circumference of the conductive nozzle 120 is provided in the conductive nozzle fixture 67 to ensure that the conductive nozzle 120 and the conductive nozzle fixture 67 can rotate synchronously.

[0082] The ratchet assembly 61 is a common structure in the prior art and will not be described in detail herein.

[0083] Alternatively, if Figure 2As shown, the mounting frame 10 also includes an upper cover 14 and an opening and closing driving member 15. The upper cover 14 is pivotally connected to the upper plate 13. The opening and closing driving member 15 is installed on the upper plate 13 and the output end of the opening and closing driving member 15 is pivotally connected to the upper cover 14. When the device is not in use, the opening and closing driving member 15 can drive the upper cover 14 to cover the above mechanism to play a dust-proof role.

[0084] Combine the following Figure 2-Figure 8 The working process of welding gun parts replacement equipment is introduced.

[0085] 1. The transfer mechanism places the welding gun 100 on the detection mechanism 70, and first detects whether there is a nozzle 130 on the welding gun 100. If the detection result shows that there is no nozzle 130, the second step is continued. If the detection result shows that there is no nozzle 130, the third step is carried out;

[0086] 2. The transfer mechanism clamps the welding gun 100 and places the nozzle 130 into the second clamping assembly 51. The piston 55 moves to clamp the nozzle 130. Driven by the first output member 221 (at this time, the main drive member 21 rotates forward), the nozzle 130 is separated from the main body 110 and sinks slightly. The transfer mechanism removes the welding gun 100 with the nozzle 130 removed. The nozzle 130 moves upward under the elastic force of the first elastic member 531. At this time, the nozzle 130 is still rotating; the vertical drive member 521 drives the second brush head 522 to rise to the inside of the second installation cavity 513 to clean the nozzle 130. After cleaning, the vertical drive member 521 drives the second brush head 522 to descend and wait for the next cleaning.

[0087] 3. The transfer mechanism places the welding gun 100 on the detection mechanism 70 to detect whether there is a conductive tip 120 on the conductive tip 120 (the purpose of the detection is to find the conductive tip 120, and to confirm that there is a conductive tip 120 before disassembly, and before disassembly, the dirt on the outer surface of the conductive tip 120 must be cleaned to ensure that the conductive tip 120 can be inserted into the conductive tip disassembly mechanism 40). If there is a conductive tip 120, proceed to step 4; if there is no conductive tip 120, proceed to step 5;

[0088] 4. The transfer mechanism clamps the welding gun 100 and places the conductive nozzle 120 into the limiting fixture 33. The conductive nozzle 120 extends into the plurality of first brush heads 32. As the second output member 222 rotates, the mounting assembly 31 rotates, and the first brush head 32 rotates to clean the conductive nozzle 120. The transfer mechanism transfers the welding gun 100 to the conductive nozzle removal mechanism 40, and waits for the removal of the conductive nozzle 120.

[0089] 5. The transfer mechanism clamps the welding gun 100 and puts the conductive tip 120 into the first clamping assembly 41. The first clamping assembly 41 clamps the conductive tip 120. Driven by the second output member 222, the conductive tip 120 is separated from the body 110 and slightly sinks. The transfer mechanism removes the body 110, and the first clamping assembly 41 releases the conductive tip 120. The old conductive tip 120 falls from the first clamping assembly 41 into the waste collection barrel (the waste collection barrel can be set on the bottom plate 11);

[0090] 6. The transfer mechanism clamps the main body 110 and places it on the conductive nozzle fixture 67 corresponding to the second clutch member 64 and presses it downward, so that the first clutch member 63 and the second clutch member 64 engage. At this time, the main drive member 21 reverses, and the new conductive nozzle 120 is threadedly connected to the main body 110, and then the entire welding gun 100 is pulled out of the conductive nozzle fixture 67.

[0091] 7. The transfer mechanism clamps the welding gun 100 and inserts the welding gun 100 into the nozzle 130 clamped by the second clamping assembly 51. The main drive member 21 is reversed, the nozzle 130 is threadedly connected to the body 110 again, the second clamping assembly 51 releases the welding gun 100, and the transfer mechanism transfers the assembled welding gun 100 away.

[0092] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. Welding gun parts replacement equipment, characterized in that: include: Mounting frame (10); A detection mechanism (70), a conductive nozzle cleaning mechanism (30) and a conductive nozzle disassembly mechanism installed on the mounting frame (10), wherein the detection mechanism (70) is used to detect the state of the welding gun (100), the conductive nozzle cleaning mechanism (30) is used to clean the conductive nozzle (120) on the welding gun (100), and the conductive nozzle disassembly mechanism is used to remove the conductive nozzle (120) and install a new conductive nozzle (120) on the welding gun (100); The transfer mechanism is communicatively connected to the detection mechanism (70) and is capable of clamping the welding gun (100) to switch positions among the detection mechanism (70), the conductive nozzle cleaning mechanism (30) and the conductive nozzle disassembly and assembly mechanism.

2. The welding gun parts replacement device according to claim 1, characterized in that: It also includes a driving mechanism (20), wherein the driving mechanism (20) is mounted on the mounting frame (10), and the conductive nozzle cleaning mechanism (30) includes: A mounting assembly (31) having a first mounting cavity (311) formed therein; one end of the mounting assembly (31) is pivotally connected to the mounting frame (10) and the other end is transmission-connected to the driving mechanism (20); the driving mechanism (20) can drive the mounting assembly (31) to rotate via a gear; A plurality of first brush heads (32) are installed at intervals along the circumferential direction on the inner wall of the first installation cavity (311), and the transfer mechanism can extend the welding gun (100) between the plurality of first brush heads (32).

3. The welding gun parts replacement device according to claim 2, characterized in that: The contact nozzle disassembly and assembly mechanism comprises a contact nozzle disassembly mechanism (40) and a contact nozzle installation mechanism (60), and the contact nozzle disassembly mechanism (40) comprises: A first clamping component (41), one end of which can loosen or clamp the conductive nozzle (120), and the other end of which is transmission-connected to the output end of the driving mechanism (20), and the driving mechanism (20) can drive the first clamping component (41) to rotate.

4. The welding gun parts replacement device according to claim 3, characterized in that: The first clamping assembly (41) and the mounting frame (10) are arranged in a floating manner.

5. The welding gun parts replacement device according to claim 3, characterized in that: The conductive nozzle mounting mechanism (60) comprises a ratchet assembly (61) and a rotating platform (62), wherein the ratchet assembly (61) is mounted on the mounting frame (10), and the rotating platform (62) is connected to the output end of the ratchet assembly (61), and a plurality of conductive nozzle fixtures (67) are floatingly arranged on the rotating platform (62), and a first clutch (63) is connected to the bottom of the conductive nozzle fixture (67), and a second clutch (64) is floatingly connected to the output end of the driving mechanism (20), and the driving mechanism (20) can drive the second clutch (64) to rotate, and the driving mechanism (20) can drive the rotating platform (62) to rotate intermittently so that the first clutch (63) located above the second clutch (64) is pressed down and connected to the second clutch (64).

6. The welding gun parts replacement device according to any one of claims 2 to 5, characterized in that: The nozzle (130) is threadedly connected to the main body of the welding gun (100) and is located outside the conductive nozzle (120). The welding gun parts replacement device further includes a nozzle disassembly mechanism (50). The nozzle disassembly mechanism (50) includes: A second clamping assembly (51), one end of which can loosen or clamp the nozzle (130) and is arranged to float with the mounting frame (10), and the driving mechanism (20) can drive the second clamping assembly (51) to rotate.

7. The welding gun parts replacement device according to claim 6, characterized in that: The nozzle disassembly and assembly mechanism (50) further comprises a nozzle cleaning assembly (52), wherein the nozzle cleaning assembly (52) comprises: A vertical driving member (521) mounted on the lower side of the second clamping assembly (51); A plurality of second brush heads (522) are installed at the output end of the vertical driving member (521); the vertical driving member (521) can drive the plurality of second brush heads (522) to move in a vertical direction; and the disassembled nozzle (130) can extend between the plurality of second brush heads (522).

8. The welding gun parts replacement device according to claim 7, characterized in that: The nozzle disassembly and assembly mechanism (50) further comprises an auxiliary support assembly (53), wherein the auxiliary support assembly (53) comprises a plurality of first elastic members (531), one end of each of the plurality of first elastic members (531) is mounted on the mounting frame (10) and is located below the second clamping assembly (51), and the other end of each of the plurality of first elastic members (531) is connected to the second clamping assembly (51).

9. The welding gun parts replacement device according to claim 8, characterized in that: The auxiliary support assembly (53) also includes a connecting plate (532), and the end of the first elastic member (531) facing away from the mounting frame (10) is connected to the connecting plate (532). The connecting plate (532) is located below the second clamping assembly (51) and is connected to the second clamping assembly (51) via a plurality of first support rods (533). The vertical drive member (521) is mounted on the connecting plate (532).

10. The welding gun parts replacement device according to claim 9, characterized in that: The auxiliary support assembly (53) further comprises a return cylinder (534), wherein the return cylinder (534) is mounted on the mounting frame (10), wherein an output end of the return cylinder (534) is connected to the connecting plate (532), and wherein the return cylinder (534) is configured to apply an upward force to the connecting plate (532) when the first elastic member (531) is compressed to a preset compression amount.

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