Welding gun part replacement equipment

Abstract

The utility model 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 utility model relates to the technical field of conductive nozzle replacement, in particular to a device for replacing welding gun parts. 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. A worn conductive tip will affect the welding quality, and seriously 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 conductive nozzles are replaced manually. However, due to the frequent replacement of conductive nozzles, manual replacement requires stopping the entire automatic arc welding production line, which is bound to 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 conductive nozzles to be replaced prematurely before their service life, thereby increasing production costs. Moreover, after manual replacement, the conductive nozzle is often not installed securely. 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 lead to the problem of missing replacement or uncertain replacement time.

[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 the conductive nozzle is removed, 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. Utility Model Content

[0005] One purpose of the utility model 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 purpose, the present invention adopts the following technical solutions:

[0007] Welding gun parts replacement equipment, including:

[0008] Mounting rack;

[0009] A detection mechanism, a contact tip cleaning mechanism, and a contact tip removal mechanism installed on the mounting frame, wherein the detection mechanism is used to detect the status of the welding gun, the contact tip cleaning mechanism is used to clean the contact tip on the welding gun, and the contact tip removal mechanism is used to remove the contact tip and install a new contact tip 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 further includes a driving mechanism, which is installed on the mounting frame. The conductive nozzle cleaning mechanism includes:

[0012] A mounting assembly having a first mounting cavity formed therein, wherein one end of the mounting assembly is pivotally connected to the mounting frame and the other end is in transmission connection with the driving mechanism, and the driving mechanism can drive the mounting assembly to rotate via a gear;

[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 into between the plurality of first brush heads.

[0014] As an optional solution, the above-mentioned conductive nozzle disassembly and assembly mechanism includes a conductive nozzle disassembly mechanism and a conductive nozzle installation mechanism, and the above-mentioned conductive nozzle disassembly mechanism includes:

[0015] The first clamping assembly has one end capable of loosening or clamping the conductive nozzle, and the other end 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, the bottom of the conductive nozzle tooling is connected to a first clutch, the output end of the driving mechanism is floatingly connected to a second clutch, 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 further includes a nozzle disassembly and assembly mechanism, which 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, which includes:

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

[0022] A plurality of second brush heads are 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. 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 the first elastic members is mounted on the mounting frame and is located below the second clamping assembly, and the other end of each of the first elastic members 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 the 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 utility model provides a device for replacing parts of a welding gun, wherein a detection mechanism is arranged on a mounting frame. Before a transfer mechanism clamps the welding gun to a conductive nozzle disassembling mechanism to disassemble the conductive nozzle, the welding gun must first reach 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 to clean the surface of the conductive nozzle in the conductive nozzle cleaning mechanism. After cleaning, the dirt on the surface of the conductive nozzle is removed. Then the welding gun follows the transfer mechanism to the conductive nozzle disassembling mechanism to disassemble the conductive nozzle. At this time, the outer size of the conductive nozzle is accurate and can be inserted into the corresponding clamping device of the conductive nozzle disassembling mechanism. The provision of the detection mechanism and the conductive nozzle cleaning mechanism ensures that the conductive nozzle will not be affected by dirt during the subsequent disassembly process of the conductive nozzle, thereby avoiding the conductive nozzle being affected by dirt in the conductive nozzle disassembling mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

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

[0032] Figure 5 This is a schematic structural diagram of the driving mechanism and the nozzle disassembly and assembly mechanism provided by an embodiment of the utility model;

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

[0034] Figure 7 It is a structural diagram of the driving mechanism and the conductive nozzle mounting mechanism provided by an embodiment of the utility model;

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

[0036] In the picture:

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

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

[0040] 40. Contact 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 drive 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. Contact nozzle mounting mechanism; 61. Ratchet assembly; 62. Rotating table; 63. First clutch member; 64. Second clutch member; 65. Second elastic member; 66. Third elastic member; 67. Contact nozzle tooling;

[0043] 70. Testing agencies;

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

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

[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 with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0048] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

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

[0050] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are used to refer to positions or locations based on the positions or locations shown in the accompanying drawings. These terms are intended solely to facilitate description and simplify operation, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes 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 removing the conductive tip 120 does not process the conductive tip 120 before removing the conductive tip 120. When removing 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 the conductive tip 120 is removed, it cannot be placed in 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 that can ensure the continuity of the conductive nozzle 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 conductive nozzle cleaning mechanism 30, and a conductive nozzle disassembly and assembly mechanism (not numbered). 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 status 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 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-mentioned 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 reaches 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 is transferred along the transfer mechanism to the conductive tip disassembly 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 clamping 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 preventing the dirt on the conductive tip 120 from affecting the placement of the conductive tip 120 into the conductive tip disassembly mechanism.

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

[0055] Optionally, the transfer mechanism is a robot, and a clamp is provided at the free end of the robot. 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 characteristics such as the height and size 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 in the U-shaped part to make a judgment based on the blocking of light.

[0057] Alternatively, as 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, as Figure 2-Figure 4 As shown, the welding gun parts replacement device also includes a drive mechanism 20, which is mounted on the mounting frame 10. The conductive tip cleaning mechanism 30 includes a mounting assembly 31 and a plurality of first brush heads 32. The mounting assembly 31 defines a first mounting cavity 311. One end of the mounting assembly 31 is pivotally connected to the mounting frame 10, and the other end is in transmission connection with the drive mechanism 20. The drive mechanism 20 can drive the mounting assembly 31 to rotate. The plurality of first brush heads 32 are circumferentially spaced apart and mounted on the inner wall of the first mounting cavity 311. The transfer mechanism can extend the welding gun 100 between the plurality of first brush heads 32. With the above arrangement, the mounting assembly 31 is driven by the drive mechanism 20 to rotate. When the transfer mechanism extends the conductive tip 120 into the first mounting cavity 311, it is also extended 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 tip 120.

[0059] Alternatively, as 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. For 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. Through the above arrangement, the rotation of the mounting assembly 31 is realized.

[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 interference installed on the inner wall of the surrounding plate 352 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, as 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 at 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 further 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] To address the aforementioned issues, the welding gun parts replacement device further includes a nozzle assembly and disassembly mechanism 50, which includes a second clamping assembly 51. The second clamping assembly 51 has one end capable of releasing or clamping the nozzle 130 and is disposed in a floating manner relative to the mounting frame 10. The drive mechanism 20 is capable of driving the second clamping assembly 51 to rotate. Through the aforementioned arrangement, the transfer mechanism first places the welding gun 100 into the second clamping assembly 51. The second clamping assembly 51 clamps the nozzle 130 and is then driven by the drive mechanism 20 to rotate, causing the nozzle 130 to rotate relative to the body 110 and subsequently be removed. During the removal process, due to the pitch of the thread, the nozzle 130 moves downward during rotation. Since the second clamping assembly 51 is in a floating connection with the mounting frame 10 (specifically, the base plate 11), there is sufficient space for the second clamping assembly 51 to sink. The clamping and releasing power of the second clamping assembly 51 is compressed air, controlled by a solenoid valve.

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

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

[0068] Alternatively, as 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 provided 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, causing the mounting arm 512 to tighten 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 also includes a return cylinder 534, which is mounted on the mounting bracket 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 predetermined amount. It is understood that because the nozzle 130 is larger than the conductive tip 120 in length and size, the thread length required to be tightened is also longer, 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 and that the nozzle 130 can return to its original position. Since the nozzle 130 does not need to be frequently replaced, the nozzle 130 returned to its original position can be reinstalled in the same position after the conductive tip 120 is replaced. During installation, the main drive member 21 is simply reversed.

[0071] Alternatively, as 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 mounted on the lower side of the second clamping assembly 51 (specifically, it is mounted on the connecting plate 532); the plurality of second brush heads 522 are all mounted on the output end of the vertical drive member 521. 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 mounting 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 mounting cavity 513. As the first output member 221 rotates, the nozzle 130 is cleaned. After 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, as 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 part located above 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, as Figure 5 and Figure 6As shown, the clamping block 511 is detachably connected to the mounting arm 512. Through the above arrangement, different clamping blocks 511 can be replaced to accommodate parts of different sizes to be clamped (for example, the nozzle 130 and the conductive nozzle 120 have different diameters, and the same mechanism can be used by replacing the clamping block 511).

[0074] The following combination Figure 2 、 Figure 7 as well as Figure 8 The structure of the contact tip assembly and disassembly mechanism is described below. The contact tip assembly and disassembly mechanism includes a contact tip disassembly mechanism 40 and a contact tip installation mechanism 60. The contact tip disassembly mechanism 40 includes a first clamping assembly 41. One end of the first clamping assembly 41 can release or clamp the contact tip 120, and the other end is transmission-connected to the output of the drive mechanism 20. The drive mechanism 20 can drive the first clamping assembly 41 to rotate. The first clamping assembly 41 is arranged to float relative to the mounting frame 10. With this arrangement, the transfer mechanism first places the welding gun 100 into the first clamping assembly 41. The first clamping assembly 41 clamps the contact tip 120 and is then driven by the drive mechanism 20 to rotate, causing the contact tip 120 to rotate relative to the body 110, thereby removing the contact tip 120. During the removal process, due to the pitch of the thread, the contact tip 120 moves downward during rotation. Because the first clamping assembly 41 is floatingly connected to the mounting frame 10, there is room for the first clamping assembly 41 to sink. Compressed air is used to power the clamping and releasing of the first clamping assembly 41.

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

[0076] Since the screwing distance of the conductive tip 120 is relatively short, in the conductive tip removal mechanism 40 , the fourth elastic member 42 may be used to form a floating arrangement for the outer member on which the first clamping assembly 41 is mounted.

[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 , which 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, the second clamping mechanism 90 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, 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 further 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, as Figure 7 As shown, the conductive nozzle mounting mechanism 60 includes a ratchet assembly 61 and a rotating platform 62. The ratchet assembly 61 is mounted on the mounting frame 10. The rotating platform 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 platform 62. The bottom of the conductive nozzle fixture 67 is connected to a first clutch 63. The output end of the driving mechanism 20 is floatingly connected to a second clutch 64. The driving mechanism 20 can drive the second clutch 64 to rotate. 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. It can be understood that one of the transmission gears 225 serves as the fourth output member 224 of the driving mechanism 20. The fourth output member 224 is floatingly connected to the second clutch member 64 via the third elastic member 66. When the main 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, causing the first clutch member 63 and the second clutch member 64 to engage. The main driving member 21 drives the conductive nozzle fixture 67 to rotate, so that the new conductive nozzle 120 is installed on the main 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. The ratchet assembly 61 drives the rotating platform 62 to rotate so that the adjacent first clutch members 63 and the second clutch members 64 correspond.

[0081] Alternatively, as Figure 1 As shown, two limiting grooves 121 are provided on the circumference of the conductive nozzle 120. 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 here.

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

[0084] The following combination 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, which first detects whether the nozzle 130 is present on the welding gun 100. If the detection result shows that the nozzle 130 is present, the second step is continued. If the detection result shows that the nozzle 130 is not present, 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 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 mounting 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 the conductive tip 120 is present (the purpose of the detection is to find the conductive tip 120 and confirm that the conductive tip 120 is present before disassembly. 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 removal mechanism 40). If the conductive tip 120 is present, the fourth step is performed. If the conductive tip 120 is not present, the fifth step is performed.

[0088] 4. The transfer mechanism clamps the welding gun 100 and places the conductive tip 120 into the limiting fixture 33. The conductive tip 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 heads 32 rotate to clean the conductive tip 120. The transfer mechanism then transfers the welding gun 100 to the conductive tip removal mechanism 40, waiting for the conductive tip 120 to be removed.

[0089] 5. The transfer mechanism clamps the welding gun 100 and places 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 separates from the body 110 and sinks slightly. 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 a waste collection bin (the waste collection bin can be provided on the base 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. 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 threaded onto the main body 110. 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-described embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the manner in which the present invention is to be implemented. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection 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 are 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 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.

2. The welding gun parts replacement device according to claim 1, characterized in that: It also includes a driving mechanism (20), the driving mechanism (20) being mounted on the mounting frame (10), and the conductive nozzle cleaning mechanism (30) including: A mounting assembly (31) is formed with a first mounting cavity (311) 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), and the driving mechanism (20) can drive the mounting assembly (31) to rotate via a gear; A plurality of first brush heads (32) are installed on the inner wall of the first installation 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).

3. The welding gun parts replacement device according to claim 2, characterized in that: The conductive nozzle disassembly and assembly mechanism comprises a conductive nozzle disassembly mechanism (40) and a conductive nozzle installation mechanism (60), and the conductive nozzle disassembly mechanism (40) comprises: A first clamping assembly (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 assembly (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) includes 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). A plurality of conductive nozzle fixtures (67) are floatingly arranged on the rotating platform (62), and the bottom of the conductive nozzle fixture (67) is connected to a first clutch (63). The output end of the driving mechanism (20) is floatingly connected to a second clutch (64), and the driving mechanism (20) can drive the second clutch (64) to rotate. 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 release 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 includes a nozzle cleaning assembly (52), and the nozzle cleaning assembly (52) includes: A vertical driving member (521) is 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 includes an auxiliary support assembly (53), wherein the auxiliary support assembly (53) includes 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) further includes a connecting plate (532), and one 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 driving 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 includes a return cylinder (534), the return cylinder (534) being mounted on the mounting frame (10), the output end of the return cylinder (534) being connected to the connecting plate (532), and the return cylinder (534) being 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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