Fully automatic stator spot welding machine

Abstract

The utility model provides a kind of full-automatic stator spot welding machine, it includes work platform, lifting drive module, lifting plate, positive electrode assembly, negative electrode assembly, first transverse drive module, pressure adjustment module, transmission plate, work guide rail and guide rail. Positive electrode assembly and pressure adjustment module are slidably connected with work guide rail, pressure adjustment module is connected with the output end of first transverse drive module by transmission plate, transmission plate is slidably connected with guide rail, and the pressurizing shaft of pressure adjustment module is connected with positive electrode assembly. The full-automatic stator spot welding machine of the utility model is slidably connected with guide rail by transmission plate, so as to improve the moving stability of positive electrode assembly, avoid moving deviation and shaking, improve spot welding quality, while positive electrode assembly is provided with positive cooling block, and negative electrode assembly is provided with negative cooling block, which can well dissipate the heat of electrode assembly, avoid heat accumulation, improve its service life, and improve the spot welding qualification rate of stator.

Description

Technical Field

[0001] This utility model relates to the field of spot welding machines, and in particular to a fully automatic stator spot welding machine. Background Technology

[0002] With the continuous improvement of industrial automation, the processing of many motor components is now being completed by automated equipment, and stator spot welding is one of the key processes. However, after a period of continuous operation, existing stator spot welding machines are prone to a decrease in the movement stability of the spot welding electrode assembly, leading to trajectory deviation and jitter during the movement and positioning process. This directly affects the accuracy of the spot welding position, resulting in poor spot welding quality. Alternatively, heat may accumulate in the electrode assembly during continuous operation. The residual heat accumulates continuously and is difficult to dissipate in real time, causing the actual operating temperature of the electrode to exceed the process setting range. This not only affects the service life of the electrode assembly but also causes quality problems such as inconsistent weld strength and uneven appearance, seriously affecting the overall performance of the stator assembly and the product qualification rate.

[0003] Therefore, it is necessary to provide a fully automatic stator spot welding machine to solve the above-mentioned technical problems. Utility Model Content

[0004] This utility model provides a fully automatic stator spot welding machine to solve the problems of low lifespan of equipment components and poor spot welding quality in existing stator spot welding machines.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is: a fully automatic stator spot welding machine, which includes: a working platform, a lifting drive module, a lifting plate, a positive electrode assembly, a negative electrode assembly, a first transverse drive module, a pressure adjustment module, a transmission plate, and a working guide rail and a guiding guide rail fixedly arranged on one side of the lifting plate; The lifting plate is connected to the output end of the lifting drive module. The negative electrode assembly and the first lateral drive module are fixedly mounted on the lifting plate. The positive electrode assembly and the pressure adjustment module are slidably connected to the working guide rail. The pressure adjustment module is connected to the output end of the first lateral drive module through the transmission plate. The transmission plate is slidably connected to the guide rail. One end of the pressure adjustment module has an elastically movable pressure shaft. The positive electrode assembly is connected to the pressure shaft. The positive electrode assembly includes a positive electrode cooling block, and the negative electrode assembly includes a negative electrode cooling block.

[0006] In this utility model, the transmission plate is slidably connected to the guide rail via a connecting plate and a guide slider. The connecting plate includes a first plate and a second plate, which are connected in an L-shaped structure. The first plate is fixedly connected to the transmission plate, and the second plate is fixedly connected to the guide slider. The guide slider is slidably connected to the guide rail. The sliding direction of the guide slider is the length direction, the length of the guide slider is greater than the length of the transmission plate, and the length of the second plate is greater than the length of the first plate.

[0007] In this utility model, the positive electrode assembly further includes a positive electrode mounting base and a positive electrode welding rod. The positive electrode mounting base is slidably connected to the working guide rail. The positive electrode cooling block is fixedly disposed on the positive electrode mounting base. The positive electrode welding rod is connected to the positive electrode cooling block. The negative electrode assembly further includes a negative electrode mounting base and a negative electrode welding rod. The negative electrode mounting base is fixedly connected to the lifting plate, the negative electrode cooling block is fixedly mounted on the negative electrode mounting base, and the negative electrode welding rod is connected to the negative electrode cooling block.

[0008] The positive electrode assembly further includes a positive electrode mounting block and a positive electrode pressure plate. The positive electrode mounting block is fixedly mounted on the positive electrode cooling block. The positive electrode mounting block is provided with a positive electrode mounting groove. The positive electrode welding rod is installed in the positive electrode mounting groove. The pressure plate is connected to the positive electrode mounting block and presses the positive electrode welding rod into the positive electrode mounting groove. The negative electrode assembly further includes a negative electrode mounting block and a negative electrode pressure plate. The negative electrode mounting block is fixedly mounted on the negative electrode cooling block. The negative electrode mounting block is provided with a negative electrode mounting groove. The negative electrode welding rod is installed in the negative electrode mounting groove. The pressure plate is connected to the negative electrode mounting block and presses the negative electrode welding rod into the negative electrode mounting groove.

[0009] Furthermore, a first cooling channel is provided inside the positive electrode cooling block corresponding to the position of the positive electrode mounting block, and a second cooling channel is provided inside the negative electrode cooling block corresponding to the position of the negative electrode mounting block, with water flowing through the first cooling channel and the second cooling channel.

[0010] In addition, both the first cooling channel and the second cooling channel have a U-shaped extension structure.

[0011] In this invention, a displacement sensor is provided on the top of the negative electrode mounting base, and a sensing block for being sensed by the displacement sensor is provided on the top of the positive electrode mounting base.

[0012] In this invention, a positive electrode insulating plate is fixedly disposed between the positive electrode mounting base and the positive electrode cooling block, and a negative electrode insulating plate is fixedly disposed between the negative electrode mounting base and the negative electrode cooling block.

[0013] In this utility model, the fully automatic stator spot welding machine further includes a longitudinal drive module, a second transverse drive module, and a rotary drive module. The second transverse drive module is connected to the output end of the longitudinal drive module, the rotary drive module is connected to the output end of the second transverse drive module, the working platform is connected to the output end of the rotary drive module, and a defective product collection and conveying mechanism is provided at one end of the second transverse drive module.

[0014] One side of the rotary drive module is connected to an electrode cleaning mechanism. The electrode cleaning mechanism includes a waste box and a cleaning wheel disposed in the waste box. The top of the waste box is provided with a cleaning opening. The positive electrode welding rod of the positive electrode assembly and the negative electrode welding rod of the negative electrode assembly can move from the cleaning opening into the waste box, thereby enabling the cleaning wheel to clean the positive electrode welding rod and the negative electrode welding rod.

[0015] Compared with the prior art, the advantages of this utility model are as follows: The fully automatic stator spot welding machine of this utility model improves the movement stability of the positive electrode assembly by slidingly connecting the transmission plate and the guide rail, avoiding movement deviation and shaking, and improving the spot welding quality. At the same time, the positive electrode assembly is equipped with a positive electrode cooling block and the negative electrode assembly is equipped with a negative electrode cooling block, which can effectively dissipate the heat of the electrode assembly, avoid heat accumulation, improve its service life, and improve the spot welding qualification rate of the stator. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments are briefly introduced below. The drawings described below are only the corresponding drawings of some embodiments of this utility model.

[0017] Figure 1 This is a schematic diagram of a preferred embodiment of the fully automatic stator spot welding machine of this utility model.

[0018] Figure 2 This is a schematic diagram of the lifting plate, positive electrode assembly, and negative electrode assembly in this utility model.

[0019] Figure 3 This is a schematic diagram of the electrode cleaning mechanism in this utility model.

[0020] Figure 4 This is a schematic diagram of the second embodiment of the connecting plate in this utility model.

[0021] Figure 5This is a perspective structural diagram of the negative electrode cooling block in this utility model. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0023] The directional terms mentioned in this utility model, such as "up", "down", "front", "back", "left", "right", "inner", "outer", "side", "top" and "bottom", are only for reference to the orientation of the accompanying drawings. The directional terms used are for the purpose of explaining and understanding this utility model, and are not intended to limit this utility model.

[0024] The terms "first" and "second" in this utility model are used for descriptive purposes only and should not be construed as indicating or implying relative importance, nor as a restriction on the order of events.

[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, a connection can be a detachable connection or a connection of an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] Existing stator spot welding machines are prone to issues such as decreased stability of the spot welding electrode assembly, leading to trajectory deviation and jitter during positioning. This directly affects the accuracy of the spot welding position, resulting in poor weld quality. Alternatively, heat accumulation may occur in the electrode assembly during continuous operation. The continuous accumulation of residual heat, which is difficult to dissipate in real time, causes the actual operating temperature of the electrode to exceed the process setting range. This not only affects the service life of the electrode assembly but also causes quality problems such as inconsistent weld strength and uneven appearance, seriously impacting the overall performance of the stator assembly and the product qualification rate.

[0027] The following is a preferred embodiment of a fully automatic stator spot welding machine provided by this utility model that can solve the above technical problems.

[0028] Please refer to Figure 1 and Figure 2 In the diagram, units with similar structures are represented by the same labels.

[0029] This embodiment provides a fully automatic stator spot welding machine, which includes: a working platform 11, a lifting drive module 12, a lifting plate 121, a positive electrode assembly 13, a negative electrode assembly 14, a first transverse drive module 15, a pressure adjustment module 16, a transmission plate 17, and a working guide rail 122 and a guiding guide rail 123 fixedly disposed on one side of the lifting plate 121.

[0030] The lifting plate 121 is connected to the output end of the lifting drive module 12. The negative electrode assembly 14 and the first lateral drive module 15 are fixedly mounted on the lifting plate 121. The positive electrode assembly 13 and the pressure adjustment module 16 are slidably connected to the working guide rail 122. The pressure adjustment module 16 is connected to the output end of the first lateral drive module 15 through the transmission plate 17. The transmission plate 17 is slidably connected to the guide rail 123. One end of the pressure adjustment module 16 has a flexible pressure shaft. The positive electrode assembly 13 is connected to the pressure shaft.

[0031] The first lateral drive module 15 can drive the positive electrode assembly 13 to move closer to the negative electrode assembly 14 so that they can cooperate to perform spot welding. The sliding connection between the transmission plate 17 and the guide rail 123 can improve the sliding stability of the transmission plate 17, and also improve the movement stability of the positive electrode assembly 13, avoiding movement deviation and jitter, and improving the spot welding quality.

[0032] The pressure adjustment module 16 is equipped with a pressure sensor and a pressure spring. The pressure sensor can monitor the welding pressure in real time, record and alarm for products with abnormal pressure. The force of the pressure spring acts on the pressure shaft, and the spring pressure ensures that the positive electrode assembly 13 is in close contact with the stator, without excessive squeezing or deformation between them, thus protecting the positive electrode assembly 13 and the stator.

[0033] Please refer to Figure 2 In this embodiment, the transmission plate 17 is slidably connected to the guide rail 123 via the connecting plate 1A and the guide slider 1231. The connecting plate 1A includes a first plate 1A1 and a second plate 1A2. The first plate 1A1 and the second plate 1A2 are connected in an L-shaped structure. The first plate 1A1 is fixedly connected to the transmission plate 17, and the second plate 1A2 is fixedly connected to the guide slider 1231. The guide slider 1231 is slidably connected to the guide rail 123.

[0034] Please refer to Figure 4 Optionally, the sliding direction of the guide slider 1231 is the length direction. The length of the guide slider 1231 is greater than the length of the transmission plate 17, and the length of the second plate 1A2 is greater than the length of the first plate 1A1. By increasing the length of the second plate 1A2 and the guide slider 1231, the sliding stability of the transmission plate 17 and the positive electrode assembly 13 can be further improved.

[0035] In this embodiment, the positive electrode assembly 13 includes a positive electrode mounting base 131, a positive electrode cooling block 132, and a positive electrode welding rod 134. The positive electrode mounting base 131 is slidably connected to the working guide rail 122, the positive electrode cooling block 132 is fixedly mounted on the positive electrode mounting base 131, and the positive electrode welding rod 134 is connected to the positive electrode cooling block 132.

[0036] The negative electrode assembly 14 includes a negative electrode mounting base 141, a negative electrode cooling block 142, and a negative electrode welding rod 144. The negative electrode mounting base 141 is fixedly connected to the lifting plate 121, the negative electrode cooling block 142 is fixedly mounted on the negative electrode mounting base 141, and the negative electrode welding rod 144 is connected to the negative electrode cooling block 142.

[0037] The positive electrode assembly 13 also includes a positive electrode mounting block 133 and a positive electrode pressure plate 135. The positive electrode mounting block 133 is fixedly mounted on the positive electrode cooling block 132. The positive electrode mounting block 133 is provided with a positive electrode mounting groove 1331. The positive electrode welding rod 134 is installed in the positive electrode mounting groove 1331. The positive electrode pressure plate 135 is connected to the positive electrode mounting block 133 and presses the positive electrode welding rod 134 into the positive electrode mounting groove 1331.

[0038] The negative electrode assembly 14 also includes a negative electrode mounting block 143 and a negative electrode pressure plate 145. The negative electrode mounting block 143 is fixedly mounted on the negative electrode cooling block 142. The negative electrode mounting block 143 is provided with a negative electrode mounting groove 1431. The negative electrode welding rod 144 is installed in the negative electrode mounting groove 1431. The negative electrode pressure plate 145 is connected to the negative electrode mounting block 143 and presses the negative electrode welding rod 144 into the negative electrode mounting groove 1431.

[0039] Both the positive electrode welding rod 134 and the negative electrode welding rod 144 are inclined, and their bottom ends are closer together to facilitate spot welding.

[0040] Furthermore, a first cooling channel is provided inside the positive electrode cooling block 132 corresponding to the position of the positive electrode mounting block 133, and a second cooling channel 1421 is provided inside the negative electrode cooling block 142 corresponding to the position of the negative electrode mounting block 143. Water flows through the first and second cooling channels 1421. By cooling the positive electrode cooling block 132 and the negative electrode cooling block 142 with water, the heat of the positive electrode assembly 13 and the negative electrode assembly 14 can be effectively dissipated, preventing heat accumulation, improving their service life, and increasing the stator spot welding qualification rate.

[0041] Please refer to Figure 5 Furthermore, in this embodiment, both the first cooling channel and the second cooling channel 1421 are U-shaped extension structures. It should be noted that... Figure 5The transverse channel portion of the second cooling channel 1421 is sealed after drilling, as the drilling process would penetrate the end face of the negative electrode cooling block 142. The water within the second cooling channel 1421 is supplied by... Figure 5 The two channels at the top of the intermediate negative electrode cooling block 142 are used for input and output.

[0042] In this embodiment, a displacement sensor 1B1 is provided on the top of the negative electrode mounting base 141, and a sensing block 1B2 for being sensed by the displacement sensor 1B1 is provided on the top of the positive electrode mounting base 131. By sensing the distance between the positive electrode mounting base 131 and the negative electrode mounting base 141, the welding position can be monitored in real time, and products that exceed the upper and lower limits can be recorded and alarmed.

[0043] In this embodiment, a positive electrode insulating plate 136 is fixedly disposed between the positive electrode mounting base 131 and the positive electrode cooling block 132, and a negative electrode insulating plate 146 is fixedly disposed between the negative electrode mounting base 141 and the negative electrode cooling block 142. This prevents current from being lost through other components.

[0044] Please refer to Figure 1 In this embodiment, the fully automatic stator spot welding machine further includes a longitudinal drive module 181, a second transverse drive module 182, and a rotary drive module 183. The second transverse drive module 182 is connected to the output end of the longitudinal drive module 181, the rotary drive module 183 is connected to the output end of the second transverse drive module 182, and the working platform 11 is connected to the output end of the rotary drive module 183. By driving the working platform 11 to move and rotate, the positive electrode assembly 13 and the negative electrode assembly 14 can perform spot welding on stators of different specifications and on different parts of the stator.

[0045] The second transverse drive module 182 is equipped with a defective product collection and conveying mechanism 19 at one end, which can transport and store stators with unqualified spot welding. The stators can be loaded and unloaded manually or by a robot.

[0046] Please refer to Figure 3 The rotary drive module 183 is connected to an electrode cleaning mechanism 1C on one side. The electrode cleaning mechanism 1C includes a waste box 1C1 and a cleaning wheel 1C2 disposed in the waste box 1C1. A cleaning opening is provided on the top of the waste box 1C1. The positive electrode welding rod 134 of the positive electrode assembly 13 and the negative electrode welding rod 144 of the negative electrode assembly 14 can move from the cleaning opening into the waste box 1C1, so that the cleaning wheel 1C2 can clean the positive electrode welding rod 134 and the negative electrode welding rod 144. The waste debris after cleaning falls into the waste box 1C1. The cleaned positive electrode welding rod 134 and negative electrode welding rod 144 can obtain higher spot welding quality.

[0047] It should also be noted that the lifting drive module 12, the first lateral drive module 15, the second lateral drive module 182, and the longitudinal drive module 181 in this utility model can adopt, but are not limited to, a structure using servo motors and lead screw assemblies for linear drive. Appropriate sensors can be set to detect the movement position of the stator and each component.

[0048] One end of the second horizontal drive module 182 can also be equipped with a barcode scanner to record the processing work of each product.

[0049] In this embodiment, the fully automatic stator spot welding machine first uses a barcode scanner to scan and record information on the stator. Then, the scanned stator is positioned and fixed on the work platform 11. The longitudinal drive module 181, the second transverse drive module 182, and the rotary drive module 183 drive the work platform 11 to move and rotate. The first transverse drive module 15 drives the positive electrode assembly 13 closer to the negative electrode assembly 14 so that they can cooperate to perform spot welding. Stators that pass the spot welding are removed for the next step, while stators that fail are placed on the defective product collection and conveying mechanism 19.

[0050] The fully automatic stator spot welding machine of this preferred embodiment improves the movement stability of the positive electrode assembly by slidingly connecting the transmission plate and the guide rail, avoiding movement deviation and vibration, and improving the spot welding quality. At the same time, the positive electrode assembly is equipped with a positive electrode cooling block and the negative electrode assembly is equipped with a negative electrode cooling block, which can effectively dissipate the heat of the electrode assembly, avoid heat accumulation, improve its service life, and improve the spot welding qualification rate of the stator.

[0051] In summary, although the present invention has been disclosed above with reference to preferred embodiments, the above preferred embodiments are not intended to limit the present invention. Those skilled in the art can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the scope defined in the claims.

Claims

1. A fully automatic stator spot welding machine, characterized in that, Includes: a working platform, a lifting drive module, a lifting plate, a positive electrode assembly, a negative electrode assembly, a first lateral drive module, a pressure adjustment module, a transmission plate, and a working guide rail and a guiding guide rail fixedly installed on one side of the lifting plate; The lifting plate is connected to the output end of the lifting drive module. The negative electrode assembly and the first lateral drive module are fixedly mounted on the lifting plate. The positive electrode assembly and the pressure adjustment module are slidably connected to the working guide rail. The pressure adjustment module is connected to the output end of the first lateral drive module through the transmission plate. The transmission plate is slidably connected to the guide rail. One end of the pressure adjustment module has an elastically movable pressure shaft. The positive electrode assembly is connected to the pressure shaft. The positive electrode assembly includes a positive electrode cooling block, and the negative electrode assembly includes a negative electrode cooling block.

2. The fully automatic stator spot welding machine according to claim 1, characterized in that, The transmission plate is slidably connected to the guide rail via a connecting plate and a guide slider. The connecting plate includes a first plate and a second plate, which are connected in an L-shaped structure. The first plate is fixedly connected to the transmission plate, and the second plate is fixedly connected to the guide slider. The guide slider is slidably connected to the guide rail. The sliding direction of the guide slider is the length direction, the length of the guide slider is greater than the length of the transmission plate, and the length of the second plate is greater than the length of the first plate.

3. The fully automatic stator spot welding machine according to claim 1, characterized in that, The positive electrode assembly further includes a positive electrode mounting base and a positive electrode welding rod. The positive electrode mounting base is slidably connected to the working guide rail. The positive electrode cooling block is fixedly mounted on the positive electrode mounting base. The positive electrode welding rod is connected to the positive electrode cooling block. The negative electrode assembly further includes a negative electrode mounting base and a negative electrode welding rod. The negative electrode mounting base is fixedly connected to the lifting plate, the negative electrode cooling block is fixedly mounted on the negative electrode mounting base, and the negative electrode welding rod is connected to the negative electrode cooling block.

4. The fully automatic stator spot welding machine according to claim 3, characterized in that, The positive electrode assembly further includes a positive electrode mounting block and a positive electrode pressure plate. The positive electrode mounting block is fixedly mounted on the positive electrode cooling block. The positive electrode mounting block is provided with a positive electrode mounting groove. The positive electrode welding rod is installed in the positive electrode mounting groove. The pressure plate is connected to the positive electrode mounting block and presses the positive electrode welding rod into the positive electrode mounting groove. The negative electrode assembly further includes a negative electrode mounting block and a negative electrode pressure plate. The negative electrode mounting block is fixedly mounted on the negative electrode cooling block. The negative electrode mounting block is provided with a negative electrode mounting groove. The negative electrode welding rod is installed in the negative electrode mounting groove. The pressure plate is connected to the negative electrode mounting block and presses the negative electrode welding rod into the negative electrode mounting groove.

5. The fully automatic stator spot welding machine according to claim 4, characterized in that, The positive electrode cooling block has a first cooling channel inside corresponding to the position of the positive electrode mounting block, and the negative electrode cooling block has a second cooling channel inside corresponding to the position of the negative electrode mounting block. Water flows through the first cooling channel and the second cooling channel.

6. The fully automatic stator spot welding machine according to claim 5, characterized in that, Both the first cooling channel and the second cooling channel have a U-shaped extension structure.

7. The fully automatic stator spot welding machine according to claim 3, characterized in that, A displacement sensor is provided on the top of the negative electrode mounting base, and a sensing block for being sensed by the displacement sensor is provided on the top of the positive electrode mounting base.

8. The fully automatic stator spot welding machine according to claim 3, characterized in that, A positive electrode insulating plate is fixedly disposed between the positive electrode mounting base and the positive electrode cooling block, and a negative electrode insulating plate is fixedly disposed between the negative electrode mounting base and the negative electrode cooling block.

9. The fully automatic stator spot welding machine according to claim 1, characterized in that, The fully automatic stator spot welding machine further includes a longitudinal drive module, a second transverse drive module, and a rotary drive module. The second transverse drive module is connected to the output end of the longitudinal drive module, the rotary drive module is connected to the output end of the second transverse drive module, the working platform is connected to the output end of the rotary drive module, and a defective product collection and conveying mechanism is provided at one end of the second transverse drive module.

10. The fully automatic stator spot welding machine according to claim 9, characterized in that, One side of the rotary drive module is connected to an electrode cleaning mechanism. The electrode cleaning mechanism includes a waste box and a cleaning wheel disposed in the waste box. The top of the waste box is provided with a cleaning opening. The positive electrode welding rod of the positive electrode assembly and the negative electrode welding rod of the negative electrode assembly can move from the cleaning opening into the waste box, thereby enabling the cleaning wheel to clean the positive electrode welding rod and the negative electrode welding rod.

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