A welding machine

Abstract

The present invention discloses a welding machine, including a product conveying mechanism, a product transfer mechanism, a grinding and cleaning mechanism, a resistance welding device and an optical adjustment mechanism. The welding machine moves the product to the resistance welding device for welding by moving the product but fixing the resistance welding device, thereby avoiding the potential safety hazards caused by moving the resistance welding device. After welding is completed, the product can also be quickly transferred to other production processes through the product conveying mechanism, which is suitable for factory assembly line production operations. The electrode surface welding points are cleaned by grinding and the dust and dirt on the electrode surface are adsorbed by negative pressure to clean the electrode surface, thereby avoiding the welding points and dust affecting the welding quality. It is also possible to judge whether the detection accuracy of the distance sensor is good based on the difference between the second distance and the first distance and the difference between the thickness of the second slider and the thickness of the first slider.

Description

Technical Field

[0001] The invention belongs to the technical field of terminal welding, and in particular relates to a welding machine. Background Art

[0002] The terminals (metal sheets) on products such as circuit boards or electrical components need to be welded together by a resistance welding device to achieve conduction. The welding method is roughly as follows: first move the resistance welding device, and then weld the metal sheet of the product fixed on the fixture.

[0003] However, when the factory production adopts assembly line operation, the product needs to be transferred to other production processes after being welded by the welding machine. Therefore, it is not suitable to fix the product on the jig and move the resistance welding device for welding, because this will affect the efficiency of transferring the product to other production processes. Summary of the invention

[0004] The object of the present invention is to provide a welding machine, which moves the product to the resistance welding device for welding by moving the product but fixing the resistance welding device. After welding, the product can be quickly transferred to other production processes.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] A welding machine comprises a product conveying mechanism, a product transfer mechanism and a resistance welding device, wherein the product transfer mechanism and the resistance welding device are located on the same side of the product conveying mechanism;

[0007] The product conveying mechanism comprises:

[0008] A conveying track, wherein the conveying track is used to convey products;

[0009] A lifting assembly, the lifting assembly is located below the conveying track, and the lifting assembly is used to lift the product located on the conveying track;

[0010] The product transfer mechanism comprises:

[0011] cantilever;

[0012] A three-dimensional driving component, wherein the three-dimensional driving component is drivingly connected to the cantilever, and the three-dimensional driving component can drive the cantilever to move in a three-dimensional space;

[0013] An intermediate connecting member, the intermediate connecting member being fixedly connected to the cantilever;

[0014] A flip driving assembly, wherein the flip driving assembly is fixedly connected to the intermediate connecting member;

[0015] A clamp assembly, the clamp assembly is used to clamp and fix the product lifted by the lifting assembly, the flip drive assembly is drivingly connected to the clamp assembly, and the flip drive assembly can drive the clamp assembly to flip in a vertical direction;

[0016] The resistance welding device is used to weld the product on the fixture assembly.

[0017] Optionally, the product conveying mechanism further comprises:

[0018] A tray, the tray is used to carry products, the conveying track conveys the products by conveying the tray, and the tray is provided with positioning holes;

[0019] A positioning assembly, wherein the positioning assembly is located below the conveying track, and the positioning assembly includes a positioning plate and a positioning drive. The positioning plate is provided with a positioning protrusion that cooperates with the positioning hole. The positioning plate is used to support and lock the tray. The positioning drive is driven and connected to the positioning plate, and the positioning drive can drive the positioning plate to lift and lock the tray.

[0020] Optionally, the lifting assembly comprises:

[0021] Lifting columns;

[0022] A lifting drive member is drivingly connected to the lifting column, and column holes for the lifting column to pass through are respectively provided on the positioning plate and the tray. The lifting drive member can drive the lifting column to pass through the column holes of the positioning plate and the tray and lift the product.

[0023] Optionally, the three-dimensional driving assembly includes an X-axis linear module, a Y-axis linear module and a Z-axis linear module, and the X-axis, the Y-axis and the Z-axis are three-dimensional coordinate axes of the three-dimensional space;

[0024] The X-axis linear module is slidably connected to the Y-axis linear module;

[0025] The Z-axis linear module is slidably connected to the X-axis linear module;

[0026] The Z-axis linear module is drivingly connected to the cantilever, and the Z-axis linear module can drive the cantilever to move on the Z-axis.

[0027] Optionally, the intermediate connecting member includes:

[0028] A rotary drive member, wherein the rotary drive member is fixed on the cantilever;

[0029] The rotating frame, the rotating driving member is drivingly connected to the rotating frame, the rotating driving member can drive the rotating frame to rotate in a horizontal direction, and the flip driving assembly is fixedly connected to the rotating frame.

[0030] Optionally, the rotating frame includes a connecting plate, and a first side plate and a second side plate respectively connected to two sides of the connecting plate;

[0031] The flip drive assembly includes an active assembly and a driven assembly;

[0032] The active components include:

[0033] a first driving member, the first driving member being fixed to the first side plate;

[0034] A hollow rotating platform, wherein the first driving member is drivingly connected to the hollow rotating platform, the hollow rotating platform is drivingly connected to the clamp assembly, and the first driving member can drive the clamp assembly to rotate in a vertical direction by driving the hollow rotating platform;

[0035] The driven component comprises:

[0036] A rotatable connecting member is fixed on the second side plate, and the clamp assembly is rotatably connected to the second side plate via the rotatable connecting member.

[0037] Optionally, the driven component further comprises:

[0038] A ventilation shaft, the ventilation shaft comprising a shaft rod and a shaft head connected to each other, the shaft rod is rotatably connected to the rotating connecting member, and the shaft head is fixedly connected to the clamp assembly;

[0039] An air intake sleeve, the air intake sleeve is sleeved on the rotating connecting member and the shaft, and the air intake sleeve is fixed on the second side plate;

[0040] An annular air groove is provided between the air inlet sleeve and the shaft rod, an air inlet hole connected to the annular air groove is provided on the air inlet sleeve, a slot hole connected to the annular air groove is provided on the shaft rod, an air path connected to the slot hole is provided inside the shaft rod, and an air outlet hole connected to the air path is provided on the shaft head.

[0041] Optionally, the clamp assembly comprises:

[0042] A tray body, used for supporting the product;

[0043] A rotary clamping cylinder is arranged on the disc body, and is used to clamp and fix the product on the disc body.

[0044] Optionally, the air inlet is connected to an air supply device, and the air outlet is connected to the rotary clamping cylinder;

[0045] The air supply device provides compressed air to the rotary clamping cylinder through the air inlet, the annular air groove, the slot hole, the air path and the air outlet.

[0046] Optionally, the welding machine further comprises a grinding and cleaning mechanism located on one side of the resistance welding device, and the grinding and cleaning mechanism comprises:

[0047] Mounting plate;

[0048] A grinding drive assembly, the grinding drive assembly is drivingly connected to the mounting plate, and the grinding drive assembly can drive the mounting plate to move along the X-axis, Y-axis and Z-axis in three-dimensional space;

[0049] A grinding plate, the grinding plate is detachably fixedly connected to the mounting plate, the grinding plate is used to be inserted between the two electrodes, and when the two electrodes clamp the grinding plate, the grinding drive assembly drives the grinding plate to move relative to the two electrodes;

[0050] A dust collecting hood is connected to a negative pressure dust suction device and is used to cover the electrode.

[0051] Optionally, the grinding and cleaning mechanism further includes a first slider and a second slider:

[0052] The first slider is fixed to the mounting plate and is used to be inserted between the two electrodes;

[0053] The second slider is fixed on the mounting plate and is used to be inserted between the two electrodes, and the difference between the thickness of the second slider and the thickness of the first slider is a preset value;

[0054] The resistance welding device is provided with a distance sensor for detecting a first distance between the two electrodes when the first slider is inserted and a second distance between the two electrodes when the second slider is inserted, and the difference between the second distance and the first distance is a calibration value;

[0055] The difference between the preset value and the check value is compared with the allowable error range, and whether the detection accuracy of the distance sensor is good is determined based on the comparison result.

[0056] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0057] When the product is transmitted to the top of the lifting assembly via the conveying track, the lifting assembly lifts the product so that the three-dimensional driving assembly drives the cantilever to drive the clamp assembly to clamp and fix the product. Then the three-dimensional driving assembly drives the cantilever to move in three-dimensional space so that the product reaches the resistance welding device for welding. When the clamp assembly clamps the product, since the metal sheet faces upward, the flip driving assembly fixedly connected to the intermediate connector can be used to drive the clamp assembly to flip the product so that the metal sheet on the product faces downward to facilitate the welding of the metal sheet. The welding machine provided in the embodiment of the present invention transmits the product through the product conveying mechanism so that the product can be conveyed to other production processes on the assembly line, and can also transfer the product conveyed on the product conveying mechanism to the resistance welding device for welding through the product transfer mechanism. Therefore, the welding machine moves the product to the resistance welding device for welding by moving the product but fixing the resistance welding device, avoiding the safety hazards caused by moving the resistance welding device, and the product can also be quickly transferred to other production processes after welding, which is suitable for factory assembly line production operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0059] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0060] Figure 1 An overall structural diagram of a welding machine provided in an embodiment of the present invention;

[0061] Figure 2 A structural diagram of a product conveying mechanism provided by an embodiment of the present invention;

[0062] Figure 3 A structural diagram of a lifting assembly and a positioning assembly provided in an embodiment of the present invention;

[0063] Figure 4 A structural diagram of a product transfer mechanism provided by an embodiment of the present invention;

[0064] Figure 5A structural diagram of a product transfer mechanism provided by an embodiment of the present invention without a three-dimensional drive component;

[0065] Figure 6 A structural diagram of a rotating frame provided by an embodiment of the present invention;

[0066] Figure 7 A side view of an active component provided by an embodiment of the present invention;

[0067] Figure 8 A front view of an active component provided by an embodiment of the present invention;

[0068] Fig. 9 An exploded view of a driven component provided by an embodiment of the present invention;

[0069] Fig.10 A structural diagram of a clamp assembly provided in an embodiment of the present invention;

[0070] Fig.11 A structural diagram of the grinding and cleaning mechanism and the resistance welding device provided in an embodiment of the present invention;

[0071] Fig.12 A structural diagram of a grinding and cleaning mechanism provided in an embodiment of the present invention.

[0072] Illustration Description:

[0073] Product conveying mechanism 100;

[0074] Conveying track 101; lifting assembly 102, lifting column 1021, lifting driving member 1022; positioning assembly 103, positioning plate 1031, positioning protrusion 1032, positioning driving member 1033;

[0075] Product transfer mechanism 200;

[0076] Cantilever 201; three-dimensional driving component 202, X-axis linear module 2021, Y-axis linear module 2022, Z-axis linear module 2023; rotation driving component 203; rotation frame 204, connecting plate 2041, first side plate 2042, second side plate 2043, horizontal rotation sensor 2044; flip driving component 205, active component 2051, first driving component 20511, hollow rotating platform 20512, vertical rotation sensor 2051 3. Limiting column 20514, driven assembly 2052, rotating connecting piece 20521, ventilation shaft 20522, shaft rod 205221, shaft head 205222, air inlet sleeve 20523, annular air groove 20524, air inlet hole 20525, slot hole 20526, air outlet hole 20527, shaft disc connecting piece 20528, rubber ring 20529; clamp assembly 206, disc body 2061, baffle 2062, rotary clamping cylinder 2063;

[0077] Grinding and cleaning mechanism 300;

[0078] Mounting plate 301, grinding drive assembly 302, X-axis electric cylinder 3021, Y-axis electric cylinder 3022, Z-axis electric cylinder 3023, grinding plate 303, dust cover 304, hand screw 305, first slider 306, second slider 307;

[0079] Resistance welding device 400;

[0080] Electrode 401;

[0081] Optical adjustment mechanism 500. DETAILED DESCRIPTION

[0082] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0083] See also Figure 1 As shown, this embodiment provides a welding machine, including a product conveying mechanism 100 , a product transferring mechanism 200 , a grinding and cleaning mechanism 300 , a resistance welding device 400 and an optical adjustment mechanism 500 .

[0084] The product conveying mechanism 100 is used to convey products so that the products can be conveyed to other production processes on the assembly line.

[0085] The product transfer mechanism 200 is used to transfer the product conveyed by the product conveying mechanism 100 to the resistance welding device 400 for welding.

[0086] The grinding and cleaning mechanism 300 is used to grind the electrode 401 on the resistance welding device 400 to clean the welding spots and dirt on the surface of the electrode 401 .

[0087] The resistance welding device 400 is used to weld the terminals (metal sheets) on the product.

[0088] The optical adjustment mechanism 500 is used to adjust the positioning when necessary. For example, when the metal sheet on the product is transferred between the two electrodes 401 of the resistance welding device 400, the optical adjustment mechanism 500 is used to position and align the metal sheet so that it falls accurately between the two electrodes 401.

[0089] Furthermore, the product transfer mechanism 200 and the resistance welding device 400 are located on the same side of the product conveying mechanism 100 , so that the product transfer mechanism 200 can quickly transfer the product from the product conveying mechanism 100 to the resistance welding device 400 .

[0090] For details, please refer to Figure 2 and Figure 3 As shown, the product conveying mechanism 100 includes:

[0091] A conveying track 101, wherein the conveying track 101 is used to convey products;

[0092] The lifting assembly 102 is located below the conveying track 101 and is used to lift the product on the conveying track 101 so as to facilitate the product transfer mechanism 200 to quickly clamp and fix the product.

[0093] For further information, see Figure 4 and Figure 5 As shown, in the welding machine provided in this embodiment, the product transfer mechanism 200 is used to move the product to the resistance welding device 400 for welding by moving the product but fixing the resistance welding device 400.

[0094] The product transfer mechanism 200 comprises:

[0095] Cantilever 201;

[0096] A three-dimensional driving component 202, the three-dimensional driving component 202 is drivingly connected to the cantilever 201, and the three-dimensional driving component 202 can drive the cantilever 201 to move in a three-dimensional space;

[0097] A rotating driving member 203, wherein the rotating driving member 203 is fixed on the cantilever 201;

[0098] The rotating frame 204, the rotating driving member 203 is drivingly connected to the rotating frame 204, and the rotating driving member 203 can drive the rotating frame 204 to rotate in the horizontal direction; wherein the rotating driving member 203 can be specifically selected to be a motor and a transmission structure (such as a motor and a gear set);

[0099] A flip driving assembly 205, the flip driving assembly 205 is fixed on the rotating frame 204;

[0100] The clamp assembly 206 is used to clamp and fix the product lifted by the lifting assembly 102. The flipping drive assembly 205 is driven and connected to the clamp assembly 206. The flipping drive assembly 205 can drive the clamp assembly 206 to flip in the vertical direction.

[0101] Specifically, the three-dimensional driving assembly includes an X-axis linear module 2021, a Y-axis linear module 2022 and a Z-axis linear module 2023, and the X-axis, Y-axis and Z-axis are three-dimensional coordinate axes of the three-dimensional space.

[0102] The X-axis linear module 2021 is slidably connected to the Y-axis linear module 2022, and the Y-axis linear module 2022 is used to drive the X-axis linear module 2021 to move along the Y-axis;

[0103] The Z-axis linear module 2023 is slidably connected to the X-axis linear module 2021, and the X-axis linear module 2021 is used to drive the Z-axis linear module 2023 to move along the X-axis;

[0104] The Z-axis linear module 2023 is drivingly connected to the cantilever 201 , and the Z-axis linear module 2023 can drive the cantilever 201 to move on the Z-axis.

[0105] Therefore, through the X-axis linear module 2021, the Y-axis linear module 2022 and the Z-axis linear module 2023, the coordinates of the cantilever 201 in the three-dimensional space can be flexibly adjusted, and then the coordinates of the rotating frame 204 in the three-dimensional space can be adjusted to achieve the adjustment of the coordinates of the product on the fixture assembly 206 in the three-dimensional space.

[0106] It should be noted that the three-dimensional driving component 202 may also adopt other structures to enable the cantilever 201 to move in three-dimensional space, such as a robot.

[0107] In summary, the product on the pallet is transported by the conveying track 101 to the bottom of the product transfer mechanism 200, and then the lifting component 102 passes through the pallet from under the conveying track 101 to lift the product, so that the product is separated from the pallet, and at the same time, the height of the product is raised to facilitate clamping by the clamp component 206, and then the cantilever 201 is driven to move in three-dimensional space through the three-dimensional driving component 202, so that the product reaches the resistance welding device 400 for welding.

[0108] Furthermore, when the fixture assembly 206 clamps the product, because the upper end surface of the product has just been equipped with electrical components in the previous process of the assembly line, there are metal sheets that need to be welded on the electrical components, and because the resistance welding device 400 is fixed on the upper end surface of the platform for safety and installation difficulty, the electrode 401 of the resistance welding device 400 is also facing upward. In order for the electrode 401 to weld the metal sheet, it is necessary to flip the drive assembly 205 to drive the fixture assembly 206 to drive the product to flip, so that the metal sheet on the product can be flipped 180°, and the direction is changed to face downward. In addition, when the fixture assembly 206 clamps the product, according to the actual direction of the metal sheet to be welded, the flip drive assembly 205 can drive the fixture assembly 206 to flip the required angle, and drive the product to move down between the electrodes 401 through the three-dimensional drive assembly 202 for welding.

[0109] Furthermore, when the metal sheets are distributed along multiple horizontal directions on the product, such as metal sheets distributed longitudinally and metal sheets distributed transversely, the rotating frame 204 can be driven to rotate in the horizontal direction by the rotating driving member 203, so that the metal sheets distributed along multiple horizontal directions can be adjusted to a position where they can be clamped and welded by the electrode 401. For details, please refer to Figure 6 As shown, when the rotating frame 204 is rotating, the horizontal rotation sensor 2044 can sense the rotation of the rotating frame 204, and the auxiliary control system controls the rotation angle of the rotating frame 204, so that the metal sheets distributed along multiple horizontal directions can be accurately docked with the electrode 401 to improve the welding quality.

[0110] The welding machine provided in this embodiment moves the product to the resistance welding device 400 for welding by moving the product but fixing the resistance welding device 400, thereby avoiding the safety hazard caused by moving the resistance welding device 400. After welding is completed, the product can also be quickly transferred to other production processes through the product conveying mechanism 100, which is suitable for factory assembly line production operations.

[0111] For further information, see Figure 2 and Figure 3 As shown, in another embodiment of the present application, the product conveying mechanism 100 further includes:

[0112] Tray, the tray is used to carry products, the conveying track 101 conveys the products through the conveying tray, and the tray is provided with positioning holes;

[0113] Positioning assembly 103, the positioning assembly 103 is located below the conveying track 101, and the positioning assembly 103 includes a positioning plate 1031 and a positioning driver 1033. The positioning plate 1031 is provided with a positioning protrusion 1032 that matches the positioning hole, and the positioning plate 1031 is used to support and lock the tray. The positioning driver 1033 is driven and connected to the positioning plate 1031, and the positioning driver 1033 can drive the positioning plate 1031 to lift, so that the positioning protrusion 1032 and the positioning hole match, so that the positioning plate 1031 locks the tray to achieve the positioning function. The conveying track 101 usually conveys products by conveying the tray, and when the conveying tray stops and the product waits to be transferred by the product transfer mechanism 200, the position where the tray stops on the conveying track 101 usually has an error with the preset station (the preset station is the tray station for the product transfer mechanism 200 to conveniently clamp the product), so the positioning assembly 103 is required to position the tray. When the positioning drive member 1033 drives the positioning plate 1031 to rise, the positioning hole of the tray cooperates with the positioning protrusion 1032 to realize the positioning function of the tray, so that the position of the tray is just at the preset position. In this embodiment, the position of the tray can be corrected by cooperating with the positioning hole and the positioning protrusion 1032, thereby improving the transfer efficiency of the product transfer mechanism 200 and avoiding the failure of the clamp assembly 206 to clamp the product due to the misalignment of the tray.

[0114] Furthermore, in another embodiment of the present application, the lifting assembly 102 includes:

[0115] Lifting column 1021;

[0116] The lifting driving member 1022 is driven and connected to the lifting column 1021. The lifting driving member 1022 can drive the lifting column 1021 to lift the tray. The positioning plate 1031 and the tray are also respectively provided with column holes for the lifting column 1021 to pass through. By passing through the column holes, the lifting column 1021 can pass through the positioning plate 1031 and the tray to directly lift the product, making it easier for the clamp assembly 206 to clamp the product.

[0117] In this embodiment, a specific implementation of the lifting component 102 is disclosed. After the positioning drive 1033 drives the positioning plate 1031 to position the tray, the lifting column 1021 can be driven by the lifting drive 1022, so that the lifting column 1021 can pass through the column hole, that is, penetrate the positioning plate 1031 and the tray to lift the product, so that the clamp component 206 can easily clamp the lifted product. The lifting component 102 has a simple structure, is easy to implement, and occupies a small space.

[0118] Specifically, as an optional manner, the lifting drive member 1022 and the positioning drive member 1033 may both be cylinders or motors.

[0119] See also Figures 5 to 9 As shown in the figure, in another embodiment of the present application, the rotating frame 204 includes a connecting plate 2041, a first side plate 2042 and a second side plate 2043 respectively connected to both sides of the connecting plate 2041. The rotating frame 204 is in an overall "U" shape, and the fixture assembly 206 can be arranged between the first side plate 2042 and the second side plate 2043. The "U" shape leaves space for the flipping of the fixture assembly 206, making the connection between the fixture assembly 206 and the rotating frame 204 more stable.

[0120] Furthermore, the flipping drive assembly 205 includes a driving component 2051 and a driven component 2052;

[0121] The driving component 2051 includes:

[0122] A first driving member 20511, which is fixed on the first side plate 2042. Among them, the first driving member 20511 can be selected as a servo motor;

[0123] A hollow rotating platform 20512, the first driving member 20511 is drivingly connected to the hollow rotating platform 20512, and the hollow rotating platform 20512 is in transmission connection with the fixture assembly 206. The first driving member 20511 can drive the fixture assembly 206 to rotate in the vertical direction by driving the hollow rotating platform 20512;

[0124] The driven component 2052 includes:

[0125] A rotating connecting member 20521, which is fixed on the second side plate 2043. The fixture assembly 206 is rotatably connected to the second side plate 2043 through the rotating connecting member 20521. Among them, the rotating connecting member 20521 can be selected as a bearing.

[0126] Therefore, by driving the hollow rotating platform 20512 to rotate by the first driving member 20511, the fixture assembly 206 can be rotatably connected to the second side plate 2043 through the rotating connecting member 20521, so that the fixture assembly 206 can be flipped.

[0127] In this embodiment, the driving component 2051 and the driven component 2052 cooperate with each other to drive the fixture assembly 206 to flip from both sides of the fixture assembly 206, so that the metal sheet to be welded on the fixture assembly 206 is flipped 180° from facing upward to facing downward, enabling the two metal sheets to be welded to be moved between the two electrodes 401. Furthermore, the driving component 2051 further includes a vertical rotation inductor 20513 for sensing the rotation of the hollow rotating platform 20512, so as to control the rotation angle of the hollow rotating platform 20512, and further control the flipping angle of the product, making the metal sheet face the electrode 401.

[0128] Furthermore, the active component 2051 also includes a limit column 20514 for limiting the rotation range of the hollow rotating platform 20512. The limit column 20514 is used to avoid equipment damage caused by excessive rotation range of the hollow rotating platform 20512.

[0129] In another embodiment of the present application, the driven component 2052 further includes:

[0130] The ventilation shaft 20522 includes a shaft rod 205221 and a shaft head 205222. The shaft rod 205221 is rotatably connected to the rotating connecting member 20521, and the shaft head 205222 is fixedly connected to the clamp assembly 206 via a shaft disc connecting member 20528;

[0131] An air intake sleeve 20523, the air intake sleeve 20523 is sleeved on the rotating connecting member 20521 and the shaft 205221, and the air intake sleeve 20523 is fixed on the second side plate 2043;

[0132] An annular air groove 20524 is provided between the air inlet sleeve 20523 and the shaft rod 205221, an air inlet hole 20525 connected to the annular air groove 20524 is provided on the air inlet sleeve 20523, a slot hole 20526 connected to the annular air groove 20524 is provided on the shaft rod 205221, an air path connected to the slot hole 20526 is provided inside the shaft rod 205221, and an air outlet hole 20527 connected to the air path is provided on the shaft head 205222.

[0133] Therefore, an air supply channel is formed by the air inlet 20525, the annular air groove 20524, the slot 20526, the air path and the air outlet 20527, and the air supply channel can be used to introduce compressed air to provide kinetic energy to the cylinder. Since the air supply channel is mainly arranged inside the ventilation shaft 20522, it not only saves space, but also avoids the installation inconvenience caused by the additional air supply channel outside the ventilation shaft 20522, because the additional air supply channel will cause the air pipe to be too long, which will seriously interfere with the flipping action of the clamp assembly 206, and even the air pipe may be pinched off during the flipping process. The overlong air pipe will also interfere with the work of other components, which is very dangerous in the high temperature and high pressure welding process. Furthermore, this embodiment also discloses a specific scheme for forming the annular air groove 20524, specifically: a plurality of rubber rings 20529 are sleeved on the shaft 205221, and the annular air groove 20524 is formed by the air intake sleeve 20523, the shaft 205221 and the rubber rings 20529.

[0134] See also Fig.10 As shown, in another embodiment of the present application, the clamp assembly 206 includes:

[0135] The tray 2061 is used to support the product;

[0136] The rotary clamping cylinder 2063 is arranged on the disk body 2061 , and the rotary clamping cylinder 2063 is used to clamp and fix the product on the disk body 2061 .

[0137] When the product needs to be clamped and fixed, the product is lifted by the lifting assembly 102 to press the product against the plate body 2061 , and then the rotary clamping cylinder 2063 works to clamp the product from the edge of the product to fix the product on the plate body 2061 .

[0138] By using the cooperation between the tray 2061 and the rotary clamping cylinder 2063, the product can be pressed against the lower surface of the tray 2061 from bottom to top, and then the rotary clamping cylinder 2063 can be used to clamp the product; the product can also be pressed against the upper surface of the tray 2061 from top to bottom, and then the rotary clamping cylinder 2063 can be used to clamp the product. In this embodiment, the product is produced in an assembly line operation mode. When the tray is transferred to the bottom of the tray 2061, the lifting assembly 102 lifts the tray so that the product reaches the bottom of the tray 2061, and then the three-dimensional driving assembly 202 works to drive the tray 2061 to move downward until the bottom surface of the tray 2061 is against the product, and then the rotary clamping cylinder 2063 clamps the product, so that the product is transferred from the tray to the product transfer mechanism 200.

[0139] Further, as an optional method, a baffle 2062 for blocking the product is provided on one side of the disk body 2061, and a rotary clamping cylinder 2063 is provided on the other three sides of the disk body 2061 respectively.

[0140] Therefore, when the rotary clamping cylinder 2063 is working, it clamps the product from three sides of the disc body 2061, and finally clamps and fixes the product on the disc body 2061 and the baffle 2062.

[0141] Furthermore, the air inlet 20525 is connected to an air supply device, and the air outlet 20527 is connected to the rotary clamping cylinder 2063; the air supply device provides compressed air to the rotary clamping cylinder 2063 through the air supply channel formed by the air inlet 20525, the annular air groove 20524, the slot 20526, the air path and the air outlet 20527 to provide kinetic energy. The air supply channel provided in the ventilation shaft 20522 is used to supply air to the rotary clamping cylinder 2063, which not only saves space, but also avoids the installation inconvenience caused by the additional air supply channel provided outside the ventilation shaft 20522.

[0142] See also Fig.11 and Fig.12 As shown, in another embodiment of the present application, the welding machine further includes a grinding and cleaning mechanism 300. The grinding and cleaning mechanism 300 includes:

[0143] Mounting plate 301;

[0144] A grinding drive assembly 302, the grinding drive assembly 302 is drivingly connected to the mounting plate 301, and the grinding drive assembly 302 can drive the mounting plate 301 to move along the X-axis, Y-axis and Z-axis in the three-dimensional space, where the X-axis, Y-axis and Z-axis are the coordinate axes in the three-dimensional space;

[0145] A grinding plate 303, the grinding plate 303 is detachably fixedly connected to the mounting plate 301, and the grinding plate 303 is used to be inserted between the two electrodes 401. When the two electrodes 401 clamp the grinding plate 303, the grinding drive assembly 302 drives the grinding plate 303 to move relative to the two electrodes 401;

[0146] The dust collecting hood 304 is connected to a negative pressure dust collecting device, and the dust collecting hood 304 is used to cover the electrode 401 .

[0147] Therefore, within the allowable range of movement, the grinding drive assembly 302 can drive the mounting plate 301 to move flexibly in the three-dimensional space to adjust the three-dimensional coordinates of the mounting plate 301, and then flexibly adjust the position of the grinding plate 303 in the three-dimensional space, so that the grinding plate 303 can be accurately inserted between the two electrodes 401. The resistance welding device 400 clamps the welding metal sheet through the two electrodes 401.

[0148] When the grinding plate 303 is inserted between the two electrodes 401 and clamped by the two electrodes 401, the grinding drive assembly 302 drives the grinding plate 303 to move to grind the surface of the electrode 401 to clean the weld spots on the surface of the electrode 401 to prevent the weld spots from affecting the subsequent welding quality.

[0149] After grinding the electrode 401 , dust and dirt may still remain on the surface of the electrode 401 . The dust collecting cover 304 can be used to cover the electrode 401 , and the dust and dirt can be adsorbed by the suction force of the negative pressure dust collecting device to remove the dust and dirt on the surface of the electrode 401 .

[0150] It should be noted that the grinding plate 303 is detachably fixedly connected to the mounting plate 301 , and when the grinding plate 303 is worn or unusable, it can be removed and replaced with a new grinding plate 303 for use.

[0151] The above treatment of the surface of the electrode 401 includes grinding and cleaning the welding spots on the surface of the electrode 401 and negative pressure adsorption of dirt on the surface of the electrode 401, which can eventually clean the surface of the electrode 401 to prevent the welding spots and dirt from affecting the welding quality.

[0152] In another embodiment of the present application, the grinding drive assembly 302 includes an X-axis electric cylinder 3021, a Y-axis electric cylinder 3022, and a Z-axis electric cylinder 3023;

[0153] The X-axis electric cylinder 3021 is driven and connected to the mounting plate 301, and the X-axis electric cylinder 3021 can drive the mounting plate 301 to move along the X-axis;

[0154] The Z-axis electric cylinder 3023 is driven and connected to the X-axis electric cylinder 3021, and the Z-axis electric cylinder 3023 can drive the X-axis electric cylinder 3021 to move along the Z-axis;

[0155] The Y-axis electric cylinder 3022 is drivingly connected to the Z-axis electric cylinder 3023 , and the Y-axis electric cylinder 3022 can drive the Z-axis electric cylinder 3023 to move along the Y-axis.

[0156] Therefore, in this embodiment, the X-axis electric cylinder 3021, the Y-axis electric cylinder 3022 and the Z-axis electric cylinder 3023 drive the mounting plate 301 to move along the X-axis, Y-axis and Z-axis in three-dimensional space, so as to flexibly adjust the three-dimensional coordinates of the mounting plate 301, thereby enabling the grinding plate 303 to be accurately inserted between the two electrodes 401.

[0157] Furthermore, since the electrode 401 is arranged to face upward, the opening of the dust hood 304 is arranged to face downward, and the dust hood 304 is fixedly connected to the mounting plate 301. The grinding drive assembly 302 can drive the dust hood 304 to cover the two electrodes 401 by driving the mounting plate 301, so that the negative pressure dust suction device can absorb and remove the dust and dirt remaining on the surface of the electrode 401 after grinding, so as to further clean the surface of the electrode 401.

[0158] Furthermore, the grinding plate 303 and the mounting plate 301 are detachably fixedly connected by means of hand screws 305 , and the use of the hand screws 305 makes it easier to disassemble and assemble the grinding plate 303 .

[0159] When the resistance welding device 400 is welding the metal sheet, the two electrodes 401 need to be closed to clamp the metal sheet. In order to safely and accurately control the closure between the two electrodes 401, a distance sensor is required to cooperate, and the distance sensor is used to detect the distance between the two electrodes 401. After the grinding and cleaning mechanism 300 grinds the electrode 401, the thickness of the electrode 401 will become thinner, and the thinning of the electrode 401 may affect the detection accuracy of the distance sensor, making its detection accuracy worse. If the detection accuracy of the distance sensor is poor, it will affect the clamping quality of the two electrodes 401, and then affect the welding quality of the metal sheet. Therefore, in order to ensure the clamping quality of the two electrodes 401 and the welding quality of the metal sheet, it is necessary to check whether the detection accuracy of the distance sensor is good before clamping and welding. When it is found that the detection accuracy is poor, it is necessary to adjust the detection accuracy of the distance sensor in time or use a new distance sensor.

[0160] In another embodiment of the present application, the grinding and cleaning mechanism 300 further includes a first slider 306 and a second slider 307 for checking whether the detection accuracy of the distance sensor is good.

[0161] Specifically, the first slider 306 is fixed on the mounting plate 301 and is used to be inserted between the two electrodes 401. The two electrodes 401 clamp the first slider 306, and then the distance sensor detects the first distance between the two electrodes 401 when the first slider 306 is inserted;

[0162] The second slider 307 is fixed on the mounting plate 301 and is used to be inserted between the two electrodes 401. The two electrodes 401 clamp the second slider 307, and then the distance sensor detects the second distance between the two electrodes 401 when the second slider 307 is inserted;

[0163] The difference between the thickness of the second slider 307 and the thickness of the first slider 306 is a preset value, and the difference between the second distance and the first distance is a verification value.

[0164] The difference between the preset value and the check value is compared with the allowable error range, and whether the detection accuracy of the distance sensor is good or not can be determined based on the comparison result.

[0165] When the difference between the preset value and the check value is within the allowable error range, it can be determined that there is no problem with the detection accuracy of the distance sensor, that is, the detection accuracy is good, and the distance sensor can continue to be used.

[0166] When the difference between the preset value and the check value exceeds the allowable error range, it can be determined that there is a problem with the detection accuracy of the distance sensor, that is, the detection accuracy is poor, and it is necessary to adjust the detection accuracy of the distance sensor in time or use a new distance sensor.

[0167] It should be noted that how to adjust the detection accuracy of the distance sensor needs to be adjusted in different ways according to different distance sensors. Therefore, this embodiment does not involve how to specifically adjust the detection accuracy. The welding machine provided in this embodiment has the advantage that, through the cooperation between the first slider 306 and the second slider 307 and the distance sensor, it is possible to check whether the detection accuracy of the distance sensor is good, so as to prompt timely adjustment of the detection accuracy of the distance sensor or a better new distance sensor, and avoid the problem of poor clamping quality of the two electrodes 401 caused by using a distance sensor with poor detection accuracy.

[0168] In summary, the working process of the welding machine includes welding process, grinding and cleaning process and inspection process.

[0169] The welding process is:

[0170] The product is transported by the transport track 101, then positioned by the positioning assembly 103 and lifted by the lifting assembly 102;

[0171] The three-dimensional driving assembly 202 drives the cantilever 201 to move in three-dimensional space, so that the clamp assembly 206 reaches above the tray;

[0172] The clamp assembly 206 clamps and fixes the product on the plate 2061 through the rotary clamping cylinder 2063;

[0173] Flip the product by using the flip driving assembly 205 so that the metal sheet on the product faces the electrode 401 of the resistance welding device 400;

[0174] The product is rotated by rotating the driving member 203 so that the metal sheet can be accurately connected with the electrode;

[0175] The cantilever 201 is driven by the three-dimensional driving component 202 to place the metal sheet between the electrodes for welding. After welding, the product is returned to the tray through the three-dimensional driving component 202, and then the conveying track 101 conveys the tray to other processes, while the clamp component 206 waits to clamp and fix the next product.

[0176] The grinding and cleaning process is:

[0177] The grinding drive assembly 302 drives the grinding plate 303 to be inserted between the two electrodes 401;

[0178] The resistance welding device 400 has two electrodes 401 clamping the grinding plate 303;

[0179] The grinding drive assembly 302 drives the grinding plate 303 to grind the electrode 401 to remove the welding spots on the surface of the electrode 401;

[0180] The grinding drive assembly 302 drives the dust collecting cover 304 to cover the electrode 401;

[0181] The negative pressure dust suction device absorbs the dust on the surface of the electrode 401 to remove the dust on the surface of the electrode 401 .

[0182] The inspection process is:

[0183] The grinding drive assembly 302 drives the first slider 306 to insert the two electrodes 401;

[0184] The resistance welding device 400 allows two electrodes 401 to clamp the first slider 306;

[0185] The distance sensor detects the distance between the two electrodes 401, which is recorded as a first distance;

[0186] The grinding drive assembly 302 drives the second slider 307 to insert the two electrodes 401;

[0187] The resistance welding device 400 allows two electrodes 401 to clamp the second slider 307;

[0188] The distance sensor detects the distance between the two electrodes 401, which is recorded as the second distance;

[0189] The difference between the preset value and the check value is compared with the allowable error range, and whether the detection accuracy of the distance sensor is good or not can be determined based on the comparison result.

[0190] The welding machine provided in the present application moves the product to the resistance welding device 400 for welding by moving the product but fixing the resistance welding device 400, thereby avoiding the potential safety hazards caused by moving the resistance welding device 400, and after welding is completed, the product can also be quickly transferred to other production processes through the product conveying mechanism 100, which is suitable for factory assembly line production operations. The surface of the electrode 401 is cleaned by grinding and cleaning the welding points and the dirt on the surface of the electrode 401 by negative pressure adsorption to clean the surface of the electrode 401, so as to avoid the welding points and dirt affecting the welding quality. It is also possible to judge whether the detection accuracy of the distance sensor is good based on the difference between the second distance and the first distance and the difference between the thickness of the second slider 307 and the thickness of the first slider 306.

[0191] Here, technical vocabulary is used only for the purpose of describing specific example embodiments and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "a", "an", and "the" used herein may be intended to include the plural forms as well. The terms "comprises", "comprising", "including", and "having" are inclusive, and thus specify the presence of the claimed features, wholes, steps, operations, elements, and / or components, but do not exclude the presence or additional presence of one or more other features, wholes, steps, operations, elements, components, and / or combinations thereof. Unless the order of execution is explicitly indicated, the method steps, processing, and operations described herein are not interpreted as necessarily needing to be performed in the specific order discussed and shown. It should also be understood that additional or optional steps may be adopted.

[0192] When an element or layer is referred to as being "on ...", "engaged with ...", "connected to" or "coupled to" another element or layer, it may be directly on another element or layer, engaged with another element or layer, connected to or coupled to another element or layer, or there may be an intervening element or layer. In contrast, when an element or layer is referred to as being "directly on ...", "directly engaged with ...", "directly connected to" or "directly coupled to" another element or layer, there may be no intervening element or layer. Other words used to describe element relationships should be interpreted in a similar manner (e.g., "between ..." and "directly between ...", "adjacent" and "directly adjacent", etc.). The term "and / or" used herein includes any and all combinations of one or more of the associated listed items. Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and / or parts, these elements, components, regions, layers and / or parts are not limited by these terms. These terms may only be used to distinguish one element, component, region or part from another element, component, region or part. Unless clearly indicated by the context, the use of terms such as "first", "second" and other numerical terms herein does not imply sequence or order. Therefore, the first element, component, region, layer or part discussed below can adopt the terminology of the second element, component, region, layer or part without departing from the teaching of the exemplary embodiment.

[0193] Spatially relative terms, such as "inside", "outside", "below", "below...", "lower", "above", "upper", etc., may be used herein for ease of description to describe the relationship between one element or feature and one or more other elements or features as shown in the figure. Spatially relative terms may be meant to include different orientations of the device in addition to the orientation depicted in the figure. For example, if the device in the figure is flipped, the elements described as "below other elements or features" or "below elements or features" will be oriented as "above other elements or features". Therefore, the example term "below..." may include both upward and downward orientations. The device can be oriented in other ways (rotated 90 degrees or other orientations) and interpreted with the spatially relative descriptions herein.

[0194] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A welding machine, characterized in that: It includes a product conveying mechanism, a product transfer mechanism and a resistance welding device, wherein the product transfer mechanism and the resistance welding device are located on the same side of the product conveying mechanism; The product conveying mechanism comprises: A conveying track, wherein the conveying track is used to convey products; A lifting assembly, the lifting assembly is located below the conveying track, and the lifting assembly is used to lift the product located on the conveying track; The product transfer mechanism comprises: cantilever; A three-dimensional driving component, wherein the three-dimensional driving component is drivingly connected to the cantilever, and the three-dimensional driving component can drive the cantilever to move in a three-dimensional space; An intermediate connecting member, the intermediate connecting member being fixedly connected to the cantilever; A flip driving assembly, wherein the flip driving assembly is fixedly connected to the intermediate connecting member; A clamp assembly, the clamp assembly is used to clamp and fix the product lifted by the lifting assembly, the flip drive assembly is drivingly connected to the clamp assembly, and the flip drive assembly can drive the clamp assembly to flip in a vertical direction; The resistance welding device is used to weld the product on the fixture assembly; the product conveying mechanism also includes: A tray, the tray is used to carry products, the conveying track conveys the products by conveying the tray, and the tray is provided with positioning holes; A positioning assembly, the positioning assembly is located below the conveying track, the positioning assembly includes a positioning plate and a positioning drive, the positioning plate is provided with a positioning protrusion matched with the positioning hole, the positioning drive is drivingly connected to the positioning plate, and the positioning drive can drive the positioning plate to lift and lock the tray; The intermediate connecting member comprises: A rotary drive member, wherein the rotary drive member is fixed on the cantilever; The rotating frame, the rotating driving member is drivingly connected to the rotating frame, the rotating driving member can drive the rotating frame to rotate in a horizontal direction, and the flip driving assembly is fixedly connected to the rotating frame.

2. The welding machine according to claim 1, characterized in that: The lifting assembly comprises: Lifting columns; A lifting drive member is drivingly connected to the lifting column, and column holes for the lifting column to pass through are respectively provided on the positioning plate and the tray. The lifting drive member can drive the lifting column to pass through the column holes of the positioning plate and the tray and lift the product.

3. The welding machine according to claim 1, characterized in that: The rotating frame includes a connecting plate, a first side plate and a second side plate respectively connected to two sides of the connecting plate; The flip drive assembly includes an active assembly and a driven assembly; The active components include: a first driving member, the first driving member being fixed to the first side plate; A hollow rotating platform, wherein the first driving member is drivingly connected to the hollow rotating platform, the hollow rotating platform is drivingly connected to the clamp assembly, and the first driving member can drive the clamp assembly to rotate in a vertical direction by driving the hollow rotating platform; The driven component comprises: A rotatable connecting member is fixed on the second side plate, and the clamp assembly is rotatably connected to the second side plate via the rotatable connecting member.

4. The welding machine according to claim 3, characterized in that: The driven component also includes: A ventilation shaft, the ventilation shaft comprising a shaft rod and a shaft head connected to each other, the shaft rod is rotatably connected to the rotating connecting member, and the shaft head is fixedly connected to the clamp assembly; An air intake sleeve, the air intake sleeve is sleeved on the rotating connecting member and the shaft, and the air intake sleeve is fixed on the second side plate; An annular air groove is provided between the air inlet sleeve and the shaft rod, an air inlet hole connected to the annular air groove is provided on the air inlet sleeve, a slot hole connected to the annular air groove is provided on the shaft rod, an air path connected to the slot hole is provided inside the shaft rod, and an air outlet hole connected to the air path is provided on the shaft head.

5. The welding machine according to claim 4, characterized in that: The clamp assembly comprises: A tray body, used to support the product; A rotary clamping cylinder is arranged on the disc body, and is used to clamp and fix the product on the disc body.

6. The welding machine according to claim 5, characterized in that: The air inlet is connected to an air supply device, and the air outlet is connected to the rotary clamping cylinder; The air supply device provides compressed air to the rotary clamping cylinder through the air inlet, the annular air groove, the slot hole, the air path and the air outlet.

7. The welding machine according to claim 1, characterized in that: It also includes a grinding and cleaning mechanism located on one side of the resistance welding device, and the grinding and cleaning mechanism includes: Mounting plate; A grinding drive assembly, the grinding drive assembly is drivingly connected to the mounting plate, and the grinding drive assembly can drive the mounting plate to move along the X-axis, Y-axis and Z-axis in three-dimensional space; A grinding plate, the grinding plate is detachably fixedly connected to the mounting plate, the grinding plate is used to be inserted between the two electrodes, and when the two electrodes clamp the grinding plate, the grinding drive assembly drives the grinding plate to move relative to the two electrodes; A dust collecting hood is connected to a negative pressure dust suction device and is used to cover the electrode.

8. The welding machine according to claim 7, characterized in that: The grinding and cleaning mechanism also includes a first slider and a second slider: The first slider is fixed to the mounting plate and is used to be inserted between the two electrodes; The second slider is fixed on the mounting plate and is used to be inserted between the two electrodes, and the difference between the thickness of the second slider and the thickness of the first slider is a preset value; The resistance welding device is provided with a distance sensor for detecting a first distance between the two electrodes when the first slider is inserted and a second distance between the two electrodes when the second slider is inserted, and the difference between the second distance and the first distance is a calibration value; The difference between the preset value and the check value is compared with the allowable error range, and whether the detection accuracy of the distance sensor is good is determined based on the comparison result.

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