Welding device and method for motor shell machining

Abstract

The invention relates to the technical field of motor machining, and discloses a welding device for motor shell machining and a method thereof.The welding device for motor shell machining comprises a base, a rotating support is rotationally installed on the base, an electric sliding block is arranged on the base, a welding gun is installed at the bottom of the electric sliding block, and a flat plate is installed on the base; a ratchet wheel is arranged on the side portion of the rotating support, the ratchet wheel and the pawl are movably clamped, the vertical rod is in transmission connection with the electric sliding block, a sliding groove is formed in the base, an L-shaped rod is installed in the sliding groove in a sliding mode, a feeding plate is installed at the other end of the L-shaped rod, and a plurality of magnets are arranged on the side portion of the feeding plate. The L-shaped rod is in transmission connection with the ratchet wheel. The device automatically rotates and displaces the shell, when the shell rotates, a feeding plate automatically moves cooling fins to the surface of the motor shell, the rotating angle of the motor shell is fixed, welding points do not need to be marked manually, and the effects of being convenient to operate and saving labor are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of motor processing, and in particular to a welding device and a method for processing a motor housing. Background Art

[0002] The heat sink of the motor casing is a key component in the motor cooling system. It is mainly used to dissipate the heat generated when the generator is running, ensuring that the motor works at a safe temperature and avoiding overheating damage. The heat sink is processed mainly by one-piece casting and welding. For motor casings with thick shells, the heat sink and the motor casing are usually cast together during casing casting. However, for some small motors, since the motor casing is thin and not convenient for casting and demolding, the casing of such small motors is often made of iron sheet bending and rolling. After the motor casing is bent, the heat sink is first fixed to the motor casing by spot welding, and then the heat sink and the motor casing are welded into a whole by laser welding.

[0003] In the prior art, when the heat sink is manually fixed to the motor housing by spot welding, the welding points are first manually marked, and the operator fixes the heat sink with one hand and performs welding with the other hand, and then the housing is displaced by manual rotation. This method is not only inconvenient to operate but also relatively labor-intensive; therefore, it does not meet the existing needs. In this regard, we propose a welding device and method for motor housing processing. Summary of the invention

[0004] The present invention provides a welding device and method for processing a motor casing, which are capable of automatically rotating and displacing the casing. When the casing rotates, a loading plate automatically moves the heat sink to the surface of the motor casing, and the rotation angle of the motor casing is fixed, so there is no need to manually mark the welding points, thereby achieving the beneficial effects of convenient operation and saving labor. The invention solves the problem that in the prior art mentioned in the above background technology, when the heat sink is manually fixed to the motor casing by spot welding, the welding points are first manually marked, and the operator fixes the heat sink with one hand and performs welding with the other hand, and then the casing is displaced by manual rotation. This method is not only inconvenient to operate but also relatively labor-intensive.

[0005] The present invention provides the following technical solution: a welding device for processing a motor housing, comprising a base, a rotating bracket rotatably mounted on the base, an electric slider disposed on the base, a welding gun disposed at the bottom of the electric slider, a flat plate disposed on the base, a vertical rod slidably plugged on the flat plate, a pawl hinged at the bottom end of the vertical rod, a ratchet wheel disposed on the side of the rotating bracket, the ratchet wheel movably engaged with the pawl, and the vertical rod and the electric slider are transmission-connected;

[0006] The base is provided with a slide groove, an L-shaped rod is slidably installed in the slide groove, a loading plate is installed at the other end of the L-shaped rod, a plurality of magnets are provided on the side of the loading plate, and the L-shaped rod is drivingly connected to the ratchet.

[0007] As an optional solution of a welding device for motor casing processing described in the present invention, a compression spring is sleeved on the vertical rod, the bottom end of the compression spring abuts against the flat plate, a cross bar is installed on the upper end of the vertical rod, and a resistance block is arranged on the electric slider, the resistance block is arranged as a trapezoidal block, and the inclined surface of the resistance block intermittently abuts against the cross bar.

[0008] As an optional solution of the welding device for machining a motor housing described in the present invention, wherein: an active bevel gear is installed on the side of the ratchet wheel, a transmission rod is provided on the base, a passive bevel gear is installed on one end of the transmission rod, and the passive bevel gear is meshed with the active bevel gear;

[0009] A driving gear is installed at the other end of the transmission rod, a transmission gear for meshing with the driving gear is arranged on the base, a driven gear is installed on the side of the transmission gear, and the driven gear is transmission-connected with the L-shaped rod.

[0010] As an optional solution of the welding device for machining a motor housing according to the present invention, wherein: a tension spring No. 1 is arranged on a side of the L-shaped rod away from the driven gear, and the other end of the tension spring No. 1 is connected to the base;

[0011] The driven gear is configured as an incomplete gear, and a first rack is disposed on a side of the L-shaped rod close to the driven gear, and the first rack is intermittently meshed with the driven gear.

[0012] As an optional solution of the welding device for processing a motor housing described in the present invention, wherein: a vertical plate is installed on the flat plate, a positioning rod is slidably inserted on the vertical plate, a pair of the positioning rods are provided, a correction block is provided at one end of the positioning rod away from the vertical plate, a guide groove is provided at the bottom of the correction block, and the guide groove is provided corresponding to the heat sink to be welded;

[0013] The correction block is in driving connection with the driven gear, and when the heat sink to be welded moves onto the motor housing, the correction block corrects the position of the heat sink.

[0014] As an optional solution of the welding device for processing the motor housing of the present invention, wherein: a synchronous gear is arranged on the side of the driven gear, the synchronous gear is arranged as an incomplete gear, a second rack is slidably mounted on the bottom of the plate, and the synchronous gear is intermittently meshed with the second rack;

[0015] One end of the second rack is provided with a connecting rod, the other end of the connecting rod is connected to the correction block, a second tension spring for resetting the correction block is sleeved on the positioning rod, and the other end of the second tension spring is connected to the vertical plate.

[0016] As an alternative embodiment of the welding device for motor housing processing according to the present invention, wherein: the guiding groove includes a trapezoidal groove and a rectangular groove, the trapezoidal groove communicates with the rectangular groove, and the width of the rectangular groove is the same as the thickness of the heat sink;

[0017] A wedge block is arranged in the guiding groove. When one end of the heat sink warps, the heat sink abuts against the inclined surface of the wedge block.

[0018] As an alternative embodiment of the welding device for motor housing processing according to the present invention, wherein: a positioning plate is arranged on the L-shaped rod, a brush plate is arranged on the side of the positioning plate, the brush plate is arranged corresponding to the channel of the welded heat sink, and a plurality of brush heads are arranged at the bottom of the brush plate;

[0019] When the heat sink to be welded moves towards the motor housing, the brush heads clean the channel of the welded heat sink.

[0020] As an alternative embodiment of the welding device for motor housing processing according to the present invention, wherein: a sliding rod is inserted into the positioning plate, the brush plate is fixedly connected to the sliding rod, a reciprocating spring is sleeved on the sliding rod, and the other end of the reciprocating spring is connected to the positioning plate;

[0021] A fixing plate is installed on the base, a plurality of fixing bumps are arranged on the fixing plate, a moving bump is arranged on the brush plate, both the moving bump and the fixing bump are arranged as semi-circular bumps, and the curved surfaces of the fixing bump and the moving bump are in sliding contact.

[0022] This solution also proposes a method for welding motor housing processing, including the following specific steps:

[0023] S1. Preparation work: Install the motor housing on the rotating bracket, clean the surface of the motor housing to remove dust and oil on the surface, and magnetically adsorb the heat sink on the feeding plate;

[0024] S2. Welding operation: The electric slider moves, and at the same time, the welding torch welds the connection between the heat sink and the motor housing, specifically including the following steps:

[0025] a1. After each welding, the electric slider resets, the motor housing automatically rotates and positions, and at the same time, the feeding plate moves the heat sink to the surface of the motor housing;

[0026] a2. During the movement of the heat sink on the surface of the motor housing, the correction block corrects the position of the heat sink.

[0027] a3. While the feeding plate moves the heat sink, the brush head cleans the welded heat sink channels.

[0028] S3. Inspection after welding: Remove the residual welding slag and spatter on the welding surface, and check whether the weld seams are uniform, whether there are pores, cracks, and incomplete penetration. For the weld seams with unqualified appearance, repair them in time.

[0029] The present invention has the following beneficial effects:

[0030] 1. For the welding device and method for machining the motor housing, when the electric slider moves, it drives the cross bar and the vertical bar to move downward through the contact between the contact block and the cross bar. At this time, the pawl hinged at the bottom end of the vertical bar engages with the ratchet wheel, thereby driving the ratchet wheel to rotate. The ratchet wheel drives the motor housing to rotate through the rotating bracket. After each rotation of the motor housing, the position of the feeding plate corresponds to the welding position of the next heat sink. Therefore, there is no need for manual marking of the welding points, achieving the effect of automatically rotating and positioning the motor housing.

[0031] Meanwhile, the driven gear rotates. When the driven gear is not engaged with the first rack, the first rack and the L-shaped rod move away from the driven gear under the pulling force of the first tension spring. At this time, the heat sink is adsorbed on the magnet manually. When the driven gear engages with the first rack again, the first rack, the L-shaped rod, and the feeding plate drive the heat sink to move towards the driven gear. After the driven gear rotates a complete circle, the heat sink completely moves to the welding point. During this process, the feeding plate automatically moves the heat sink to the surface of the motor housing. During subsequent welding, there is no need to manually fix the heat sink, achieving the effects of convenient operation and labor saving, and improving the practicability of this device.

[0032] 2. For the welding device and method for machining the motor housing, during the process of the heat sink moving to the motor housing, the driven gear drives the synchronous gear to rotate. When the synchronous gear engages with the second rack, the second rack drives the correction block to move towards the heat sink to be welded through the connecting rod. The heat sink moves into the guiding groove on the correction block. Among them, the trapezoidal groove straightens the heat sink in the horizontal direction to prevent the heat sink from shifting horizontally, and the wedge block straightens the heat sink in the vertical direction to prevent one end of the heat sink from tilting. After being straightened by the correction block, the heat sink fits better with the surface of the motor housing. Therefore, it avoids virtual welding of the heat sink during subsequent welding, enables the heat sink to be in full contact with the motor housing, ensures the heat dissipation effect of the heat sink, and thus improves the reliability of this device. Description of the Drawings

[0033] Figure 1 It is a schematic structural diagram of the whole of the present invention.

[0034] Figure 2This is a schematic structural diagram of the ratchet and pawl of the present invention.

[0035] Figure 3 of the present invention Figure 2 The enlarged structural diagram at position A in

[0036] Figure 4 This is a schematic structural diagram of the loading plate of the present invention.

[0037] Figure 5 This is a three-dimensional structural diagram of the calibration block of the present invention.

[0038] Figure 6 This is a top view structural diagram of the calibration block of the present invention.

[0039] Figure 7 This is a sectional structural diagram of the calibration block of the present invention.

[0040] Figure 8 This is a schematic structural diagram of the brush plate of the present invention.

[0041] Figure 9 of the present invention Figure 8 The enlarged structural diagram at position B in

[0042] Figure 10 of the present invention Figure 8 The enlarged structural diagram at position C in

[0043] In the figure: 101, base; 102, rotating bracket; 103, electric slider; 104, welding torch; 201, first tension spring; 202, L-shaped rod; 203, loading plate; 204, magnet; 205, chute; 206, first rack; 207, driven gear; 208, driving gear; 209, transmission rod; 210, passive bevel gear; 211, driving bevel gear; 212, flat plate; 213, compression spring; 214, vertical rod; 215, cross bar; 216, ratchet; 217, pawl; 218, transmission gear; 219, abutting block; 301, synchronous gear; 302, second rack; 303, connecting rod; 304, calibration block; 305, second tension spring; 306, positioning rod; 307, vertical plate; 308, guiding groove; 309, trapezoidal groove; 310, rectangular groove; 311, wedge block; 401, positioning plate; 402, sliding rod; 403, brush plate; 404, moving convex block; 405, fixing plate; 406, fixing convex block; 407, reciprocating spring; 408, brush head. Detailed implementation manners

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments 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.

[0045] Embodiment 1: This embodiment aims to solve the problem that when the heat sink is manually fixed to the motor housing by spot welding in the prior art, the welding points are manually marked, and the operator fixes the heat sink with one hand and performs welding with the other hand, and then the housing is displaced by manual rotation. This method is not only inconvenient to operate but also relatively labor-intensive. Please refer to Figures 1 to 10 A welding device for processing a motor housing comprises a base 101, on which a rotating bracket 102 is rotatably mounted, an electric slider 103 is arranged on the base 101, a welding gun 104 is arranged at the bottom of the electric slider 103, a flat plate 212 is arranged on the base 101, a vertical rod 214 is slidably inserted on the flat plate 212, a pawl 217 is hinged at the bottom end of the vertical rod 214, a ratchet 216 is arranged on the side of the rotating bracket 102, the ratchet 216 is movably engaged with the pawl 217, the vertical rod 214 is transmission-connected with the electric slider 103, a slide groove 205 is arranged on the base 101, an L-shaped rod 202 is slidably mounted in the slide groove 205, a loading plate 203 is arranged on the other end of the L-shaped rod 202, a plurality of magnets 204 for adsorbing a heat sink are arranged on the side of the loading plate 203, and the L-shaped rod 202 is transmission-connected with the ratchet 216.

[0046] It should be noted that the pawl 217 can rotate unidirectionally through the spring, so the pawl 217 can only engage with the ratchet 216 in one direction when moving. Specifically, when the pawl 217 moves downward, the pawl 217 engages with the ratchet 216, and the ratchet 216 rotates clockwise. The specific structure and principle of the ratchet 216 and the pawl 217 are well known to those skilled in the art and will not be elaborated here.

[0047] For details, please refer to Figure 2 , Figure 3 A compression spring 213 is sleeved on the vertical rod 214, and the bottom end of the compression spring 213 contacts the flat plate 212. A cross bar 215 is installed on the upper end of the vertical rod 214. A contact block 219 is provided on the electric slider 103. The contact block 219 is set as a trapezoidal block, and the inclined surface of the contact block 219 contacts the cross bar 215 intermittently.

[0048] Please note that, please refer to Figure 2 , Figure 3, the included angle between two adjacent teeth of the ratchet wheel 216 is the same as the included angle between two adjacent heat sinks. After each welding, the electric slider 103 drives the abutting block 219 to move. At this time, the inclined surface of the abutting block 219 abuts against the cross bar 215. Therefore, the abutting block 219 will drive the cross bar 215, the vertical bar 214 and the pawl 217 to move downward. At this time, the pawl 217 hinged at the bottom end of the vertical bar 214 engages with the ratchet wheel 216. When the pawl 217 moves downward, it drives the ratchet wheel 216 to rotate. Further, the ratchet wheel 216 drives the motor housing to rotate through the rotating bracket 102. Since the ratchet wheel 216 rotates the same angle each time, after each rotation of the motor housing, the position of the loading plate 203 corresponds to the welding position of the next heat sink. In addition, if there is no need to weld the heat sink at this position of the motor housing, the ratchet wheel 216 continues to rotate.

[0049] In addition, see Figure 2 , a driving bevel gear 211 is installed on the side of the ratchet wheel 216, a transmission rod 209 is arranged on the base 101, a driven bevel gear 210 is installed at one end of the transmission rod 209, the driven bevel gear 210 meshes with the driving bevel gear 211, a driving gear 208 is installed at the other end of the transmission rod 209, a transmission gear 218 for meshing with the driving gear 208 is arranged on the base 101, and a driven gear 207 is installed on the side of the transmission gear 218. The driven gear 207 is in transmission connection with the L-shaped rod 202.

[0050] Specifically, please refer to Figure 1 , a first tension spring 201 is arranged on the side of the L-shaped rod 202 away from the driven gear 207, the other end of the first tension spring 201 is connected to the base 101, the driven gear 207 is arranged as an incomplete gear, a first rack 206 is arranged on the side of the L-shaped rod 202 close to the driven gear 207, and the first rack 206 meshes with the driven gear 207 intermittently.

[0051] In addition, please refer to Figure 2 , each time the ratchet wheel 216 rotates, it drives the driven gear 207 to rotate one week through the transmission of the driving bevel gear 211, the driven bevel gear 210, the transmission rod 209, the driving gear 208 and the transmission gear 218. The driven gear 207 is an incomplete gear. It should be noted that during welding, the driven gear 207 meshes with the first rack 206. After welding is completed, the electric slider 103 drives the abutting block 219 to abut against the cross bar 215. As can be understood from the above description, at this time, the driven gear 207 rotates and the driven gear 207 no longer meshes with the first rack 206. After the first rack 206 loses meshing, the first rack 206 and the L-shaped rod 202 move away from the driven gear 207 under the tension of the first tension spring 201 (see Figure 1) At this time, the heat sink is manually adsorbed on the magnet 204. Since the driven gear 207 will rotate one full circle, the driven gear 207 will mesh with the first rack 206 again. The first rack 206, the L-shaped rod 202, and the loading plate 203 drive the heat sink to move in the direction of the driven gear 207. After the driven gear 207 rotates one full circle, the heat sink to be welded moves to the welding point.

[0052] This embodiment also proposes a method for processing and welding a motor housing, including the following specific steps:

[0053] S1. Preparation work: Install the motor housing on the rotating bracket 102, clean the surface of the motor housing to remove dust and oil stains on the surface, and magnetically adsorb the heat sink on the loading plate 203.

[0054] S2. Welding operation: The electric slider 103 moves, and at the same time, the welding torch 104 welds the connection between the heat sink and the motor housing. The specific steps include:

[0055] a1. After each welding, the electric slider 103 resets, and the motor housing automatically rotates and repositions.

[0056] At the same time, the loading plate 203 moves the heat sink to the surface of the motor housing.

[0057] a2. During the process of the heat sink moving on the surface of the motor housing, the calibration block 304 calibrates the position of the heat sink.

[0058] a3. While the loading plate 203 moves the heat sink, the brush head 408 cleans the welded heat sink channel.

[0059] S3. Inspection after welding: Remove the residual welding slag and spatter on the welding surface, check whether the weld is uniform, and whether there are pores, cracks, and incomplete penetration. For welds with unqualified appearance, repair them in time.

[0060] In this embodiment, the electric slider 103 drives the resistance block 219 to move. When the inclined surface of the resistance block 219 conflicts with the cross bar 215, the resistance block 219 will drive the cross bar 215 and the vertical bar 214 to move downward. At this time, the pawl 217 hinged at the bottom end of the vertical bar 214 engages with the ratchet 216, thereby driving the ratchet 216 to rotate. Further, the ratchet 216 drives the motor housing to rotate through the rotating bracket 102. After each rotation of the motor housing, the position of the loading plate 203 corresponds to the welding position of the next heat sink. At the same time, the driven gear 207 rotates, and the driven gear 207 is no longer engaged with the No. 1 rack 206. The No. 1 rack 206 and the L-shaped rod 202 are in a No. 1 pull The pull of the spring 201 moves it in the direction away from the driven gear 207. At this time, the heat sink is manually adsorbed on the magnet 204. When the driven gear 207 is meshed with the No. 1 rack 206 again, the No. 1 rack 206 and the L-shaped rod 202, and the loading plate 203 drive the heat sink to move in the direction of the driven gear 207. After the driven gear 207 has made a complete rotation, the heat sink is completely moved to the welding point. During this process, the motor housing is automatically rotated and displaced. When the housing rotates, the loading plate automatically moves the heat sink to the surface of the motor housing. Moreover, the rotation angle of the motor housing is fixed, and there is no need to manually mark the welding points, which achieves the effect of convenient operation and labor saving, thereby improving the practicality of the device.

[0061] Embodiment 2: This embodiment aims to promote the solution of the problem that when the feeding plate 203 moves the heat sink, the bottom end of the heat sink is in sliding contact with the motor housing, so the heat sink may be angularly offset under the action of friction. In addition, the uneven force on the heat sink under the action of friction may cause one end of the heat sink to tilt. The angular offset and tilting of one end of the heat sink will cause the heat sink to be partially suspended, resulting in cold welding at the suspended part of the heat sink during subsequent welding, resulting in poor contact between the heat sink and the motor housing, resulting in poor heat dissipation effect. This embodiment is an improvement made on the basis of Embodiment 1. For details, please refer to Figures 1 to 10 A vertical plate 307 is installed on the flat plate 212, and a positioning rod 306 is slidably inserted on the vertical plate 307. A pair of positioning rods 306 are provided, and a correction block 304 is provided at one end of the positioning rod 306 away from the vertical plate 307. A guide groove 308 is opened at the bottom of the correction block 304, and the guide groove 308 is arranged corresponding to the heat sink to be welded. The correction block 304 is connected to the driven gear 207 in transmission. When the heat sink to be welded moves to the motor housing, the correction block 304 corrects the position of the heat sink.

[0062] For details, please refer to Figure 1A synchronous gear 301 is arranged on the side of the driven gear 207, and the synchronous gear 301 is arranged as an incomplete gear. A No. 2 rack 302 is slidably installed at the bottom of the flat plate 212, and the synchronous gear 301 is intermittently meshed with the No. 2 rack 302. A connecting rod 303 is arranged at one end of the No. 2 rack 302, and the other end of the connecting rod 303 is connected to the correction block 304. A No. 2 tension spring 305 for resetting the correction block 304 is sleeved on the positioning rod 306, and the other end of the No. 2 tension spring 305 is connected to the vertical plate 307.

[0063] It should be noted that when the synchronous gear 301 is engaged with the second rack 302, the second rack 302 drives the correction block 304 to move toward the heat sink to be welded through the connecting rod 303, and the correction block 304 corrects the position of the heat sink. When the heat sink correction is completed, the synchronous gear 301 and the second rack 302 are no longer engaged, and the correction block 304 is reset under the tension of the second tension spring 305.

[0064] The guide groove 308 includes a trapezoidal groove 309 and a rectangular groove 310. The trapezoidal groove 309 is connected to the rectangular groove 310. The width of the rectangular groove 310 is the same as the thickness of the heat sink. A wedge block 311 is arranged in the guide groove 308. When one end of the heat sink is tilted, the heat sink will collide with the inclined surface of the wedge block 311. The trapezoidal groove 309 corrects the heat sink in the horizontal direction. If the horizontal angle of the heat sink is offset, the heat sink will collide with the inclined surface of the trapezoidal groove 309. When the heat sink enters the rectangular groove 310 from the trapezoidal groove 309, the horizontal direction of the heat sink is straightened. In addition, the wedge block 311 straightens the vertical direction of the heat sink. If one end of the heat sink is tilted, the heat sink will collide with the inclined surface of the wedge block 311, thereby restoring the tilted heat sink to be straight.

[0065] In addition, since some welding slag caused by splashes will adhere to the surface of the motor shell during welding, the welding slag must be removed before the motor shell is subsequently sprayed with anti-rust paint. The heat sink often has a certain height and the spacing between adjacent heat sinks is narrow. Therefore, it is not very convenient to clean the welding slag later. The present embodiment also proposes that a positioning plate 401 is provided on the L-shaped rod 202, and a brush plate 403 is provided on the side of the positioning plate 401. The brush plate 403 is arranged corresponding to the welded heat sink channel, and a plurality of brush heads 408 are provided at the bottom of the brush plate 403. When the heat sink to be welded moves toward the motor shell, the brush head 408 cleans the welded heat sink channel.

[0066] For details, please refer to Figure 8 , Figure 9 , Figure 10, a slide bar 402 is inserted into the positioning plate 401. The brush plate 403 is fixedly connected to the slide bar 402. A reciprocating spring 407 is sleeved on the slide bar 402, and the other end of the reciprocating spring 407 is connected to the positioning plate 401. A fixing plate 405 is installed on the base 101. A plurality of fixing bumps 406 are arranged on the fixing plate 405. A moving bump 404 is arranged on the brush plate 403. Both the moving bump 404 and the fixing bump 406 are arranged as semi-circular bumps, and the curved surfaces of the fixing bump 406 and the moving bump 404 are in sliding contact.

[0067] Therefore, when the L-shaped rod 202 drives the feeding plate 203 to move the heat sink, the positioning plate 401 arranged on the L-shaped rod 202 drives the fixing plate 405 to move synchronously. Moreover, a plurality of brush heads 408 are arranged at the bottom of the brush plate 403. The brush heads 408 clean the welded heat sink channels, and the brush heads 408 clean the welding slag attached to the motor housing. In addition, while the brush plate 403 is moving, the moving bump 404 arranged on the brush plate 403 is in sliding contact with the fixing bump 406. With the cooperation of the reciprocating spring 407, the brush plate 403 drives the brush heads 408 to move while performing a reciprocating motion, increasing the cleaning area of the brush heads 408, thereby improving the cleaning effect of the brush heads 408, helping to fully remove the welding slag on the surface of the motor housing. Therefore, the subsequent manual cleaning operation of the heat sink is reduced, and the practicability of this device is increased.

[0068] In this embodiment: During the process of the heat sink moving onto the motor housing, the driven gear 207 drives the synchronous gear 301 to rotate. When the synchronous gear 301 meshes with the second rack 302, the second rack 302 drives the correction block 304 to move towards the heat sink to be welded through the connecting rod 303. The heat sink moves into the guiding groove 308 on the correction block 304. Among them, the trapezoidal groove 309 straightens the heat sink in the horizontal direction to prevent the heat sink from shifting in the horizontal direction, and the wedge block 311 straightens the heat sink in the vertical direction to prevent one end of the heat sink from tilting. After being straightened by the correction block 304, the heat sink fits better with the surface of the motor housing. Therefore, it avoids the occurrence of false soldering during the subsequent welding of the heat sink, enables the heat sink to be in full contact with the motor housing, ensures the heat dissipation effect of the heat sink, and thus improves the reliability of this device.

[0069] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0070] The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A welding device for machining a motor housing, comprising a base (101), a rotating bracket (102) rotatably mounted on the base (101), an electric slider (103) disposed on the base (101), a welding gun (104) mounted at the bottom of the electric slider (103), characterized in that: A flat plate (212) is mounted on the base (101), a vertical rod (214) is slidably inserted on the flat plate (212), a ratchet (217) is hinged at the bottom end of the vertical rod (214), a ratchet (216) is arranged on the side of the rotating bracket (102), the ratchet (216) and the ratchet (217) are movably engaged, and the vertical rod (214) is transmission-connected to the electric slider (103); A slide groove (205) is provided on the base (101), an L-shaped rod (202) is slidably installed in the slide groove (205), a loading plate (203) is installed at the other end of the L-shaped rod (202), a plurality of magnets (204) are provided on the side of the loading plate (203), and the L-shaped rod (202) is drivingly connected to the ratchet (216).

2. A welding device for machining a motor housing according to claim 1, characterized in that: A compression spring (213) is sleeved on the vertical rod (214), the bottom end of the compression spring (213) contacts the flat plate (212), a cross bar (215) is installed on the upper end of the vertical rod (214), and a contact block (219) is arranged on the electric slider (103), the contact block (219) is set as a trapezoidal block, and the inclined surface of the contact block (219) contacts the cross bar (215) intermittently.

3. A welding device for machining a motor housing according to claim 1, characterized in that: A driving bevel gear (211) is installed on the side of the ratchet wheel (216), a transmission rod (209) is arranged on the base (101), a passive bevel gear (210) is installed on one end of the transmission rod (209), and the passive bevel gear (210) is meshed with the driving bevel gear (211); A driving gear (208) is installed at the other end of the transmission rod (209), a transmission gear (218) for meshing with the driving gear (208) is arranged on the base (101), a driven gear (207) is installed on the side of the transmission gear (218), and the driven gear (207) is transmission-connected with the L-shaped rod (202).

4. A welding device for machining a motor housing according to claim 3, characterized in that: A tension spring (201) is provided on one side of the L-shaped rod (202) away from the driven gear (207), and the other end of the tension spring (201) is connected to the base (101); The driven gear (207) is configured as an incomplete gear, and a first rack (206) is disposed on one side of the L-shaped rod (202) close to the driven gear (207), and the first rack (206) is intermittently meshed with the driven gear (207).

5. A welding device for machining a motor housing according to claim 3, characterized in that: A vertical plate (307) is installed on the flat plate (212), a positioning rod (306) is slidably inserted on the vertical plate (307), a pair of positioning rods (306) are provided, a correction block (304) is provided at one end of the positioning rod (306) away from the vertical plate (307), a guide groove (308) is provided at the bottom of the correction block (304), and the guide groove (308) is provided corresponding to the heat sink to be welded; The correction block (304) is drivingly connected to the driven gear (207), and when the heat sink to be welded moves onto the motor housing, the correction block (304) corrects the position of the heat sink.

6. A welding device for machining a motor housing according to claim 5, characterized in that: A synchronous gear (301) is arranged on the side of the driven gear (207), and the synchronous gear (301) is arranged as an incomplete gear. A second rack (302) is slidably mounted on the bottom of the flat plate (212), and the synchronous gear (301) is intermittently meshed with the second rack (302); A connecting rod (303) is provided at one end of the second rack (302), and the other end of the connecting rod (303) is connected to the correction block (304). A second tension spring (305) for resetting the correction block (304) is sleeved on the positioning rod (306), and the other end of the second tension spring (305) is connected to the vertical plate (307).

7. A welding device for machining a motor housing according to claim 5, characterized in that: The guide groove (308) comprises a trapezoidal groove (309) and a rectangular groove (310), the trapezoidal groove (309) is connected to the rectangular groove (310), and the width of the rectangular groove (310) is the same as the thickness of the heat sink; A wedge-shaped block (311) is arranged in the guide groove (308), and when one end of the heat sink is tilted, the heat sink contacts the inclined surface of the wedge-shaped block (311).

8. The welding device for machining a motor housing according to claim 1, characterized in that: A positioning plate (401) is arranged on the L-shaped rod (202), a brush plate (403) is arranged on the side of the positioning plate (401), the brush plate (403) is arranged corresponding to the welded heat sink channel, and a plurality of brush heads (408) are arranged at the bottom of the brush plate (403); When the heat sink to be welded moves toward the motor housing, the brush head (408) cleans the welded heat sink channel.

9. A welding device for machining a motor housing according to claim 8, characterized in that: A slide bar (402) is inserted into the positioning plate (401), a brush plate (403) is fixedly connected to the slide bar (402), a reciprocating spring (407) is sleeved on the slide bar (402), and the other end of the reciprocating spring (407) is connected to the positioning plate (401); A fixed plate (405) is installed on the base (101), a plurality of fixed protrusions (406) are arranged on the fixed plate (405), a movable protrusion (404) is arranged on the brush plate (403), the movable protrusion (404) and the fixed protrusion (406) are both arranged as semicircular protrusions, and the curved surfaces of the fixed protrusion (406) and the movable protrusion (404) are in sliding contact.

10. A method for machining and welding a motor housing, comprising the motor housing machining and welding device according to any one of claims 1 to 9, characterized in that: The method comprises the following specific steps: S1. Preparation: Install the motor housing on the rotating bracket (102), clean the surface of the motor housing, remove dust and oil on the surface of the housing, and attach the heat sink to the loading plate (203) by magnetic force; S2, welding operation: the electric slider (103) moves, and the welding gun (104) welds the connection between the heat sink and the motor housing, which specifically includes the following steps: a1. After each welding, the electric slider (103) is reset, and the motor housing automatically rotates and changes position. At the same time, the loading plate (203) moves the heat sink to the surface of the motor housing; a2. When the heat sink moves on the surface of the motor housing, the correction block (304) corrects the position of the heat sink; a3. While the loading plate (203) moves the heat sink, the brush head (408) cleans the welded heat sink channel; S3. Inspection after welding: remove residual welding slag and spatter on the welding surface, check whether the weld is uniform, whether there are pores, cracks, or incomplete penetration, and repair the welds that do not meet the appearance requirements in time.

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