Cutting and welding equipment for rectangular wire motor stators

Abstract

To provide a cutting and welding device for a flat wire motor stator that belongs to the technical field of a motor production device.SOLUTION: Cutting and welding processes including press fitting, wire cutting, welding, and locking are configured as a single device, and conveyance of a material between each process is performed by a material conveying rotary disc. Station holes distributed in a surrounding mode are formed in the material conveying rotary disc, and the material conveying rotary disc can drive a stator to be machined to rotate through rotation; a tool taking and placing mechanism, a press fitting mechanism, a wire cutting mechanism and a welding mechanism are sequentially arranged above the material conveying rotary disc in a surrounding mode and correspond to the station holes, and stators to be machined on a material conveying line can be continuously conveyed to the material conveying rotary disc through a material moving mechanism. In addition, delivery of the material to and from the material conveying line is also automated by the material moving mechanism.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention belongs to the technical field of motor production equipment, and particularly relates to a cutting and welding device for a flat rectangular wire motor stator.

Background Art

[0002] As the name implies, a flat rectangular wire motor uses flat rectangular copper wire (a type of copper wire whose cross-section is finished to be rectangular by drawing or rolling) for the stator winding. First, the winding is formed into a hairpin-like shape and inserted into the slots of the stator, and then the ends of the hairpin are welded at the other end.

[0003] When processing an existing flat rectangular copper wire motor, it is necessary to cut the flat rectangular copper wire of the stator. To ensure that the cut end maintains a predetermined shape during cutting, a tool is fitted to the stator for easy cutting, and then it is transported to a welding device to weld and connect the cut flat rectangular copper wire.

[0004] The existing processing device for flat-angle copper wire motors is generally a separate device with a low degree of automation. For example, the automatic mounting device for stator flat-angle copper wire locks disclosed in the Chinese utility model with the patent publication number CN218775989U includes a first conveying mechanism, a jacking mechanism, a mounting mechanism, a locking mechanism, and a table. Both the mounting mechanism and the locking mechanism are mounted on the table via a support frame, the first conveying mechanism and the jacking mechanism are mounted on the table. The first conveying mechanism continuously conveys the locking tool to the position of the jacking mechanism, the mounting mechanism clamps and lifts the locking tool, the stator core can be placed at the position of the jacking mechanism, then the mounting mechanism assembles the locking tool at the upper end of the stator core, and finally the locking mechanism realizes automatic locking of the locking tool. However, this device can only lock the tool to facilitate welding and cannot simultaneously meet the process steps of automatic mounting, cutting, and welding of the locking tool. To perform cutting and welding next, its conveying device or manual labor is required to perform the processing of the next process. Therefore, there is a need for a device with a high degree of automation that can automatically complete the locking of the tool, automatically cut and weld the stator, and convey the welded stator to the production line.

Summary of the Invention

Problems to be Solved by the Invention

[0005] In view of the above problems, the present invention provides a cutting and welding device for a flat-angle wire motor stator, which well solves the problem that the existing processing device for flat-angle copper wire motors is generally a separate device with a low degree of automation and cannot simultaneously meet the process steps of automatic mounting, cutting, and welding of the locking tool, and manual labor or other conveying devices are required to send it to the next process for processing.

Means for Solving the Problems

[0006] To achieve the above object, the technical solution adopted by the present invention is as follows. The cutting and welding device for a flat angle motor stator includes a material conveying line, a material moving mechanism, a material conveying turntable, a tool inserting and removing mechanism, a crimping mechanism, a wire cutting mechanism, a welding mechanism, a locking mechanism, and a stator adjusting mechanism. The material conveying line is used to convey the stator to be processed and the processed stator. The material moving mechanism is used to transport the stator to be processed on the material conveying line to the material conveying turntable, and to return the processed stator on the material conveying turntable to the material conveying line. The material conveying turntable is provided with station holes arranged around it, and the material conveying turntable can rotate the stator to be processed by rotation. The locking mechanism is installed in the middle of the material conveying turntable and is used to unlock and lock the tool. The tool inserting and removing mechanism is used to place the tool on the stator to be processed. The crimping mechanism is used to clamp the tool and make it in close contact with the stator. The wire cutting mechanism is used to cut the excess flat angle copper wire above the stator. The welding mechanism welds the cut flat angle copper wire. The tool inserting and removing mechanism, the crimping mechanism, the wire cutting mechanism, and the welding mechanism are sequentially arranged around the upper part of the material conveying turntable and correspond to the station holes.

[0007] The stator adjusting mechanism is located under the station hole corresponding to the wire cutting mechanism and is used to protrude and rotate the stator. The material moving mechanism continuously transports the stator to be processed on the material conveying line to the material conveying turntable, and the cutting and welding process of the flat angle copper wire on the stator can be completed by fitting with the tool inserting and removing mechanism, the wire pressing mechanism, the wire cutting mechanism, and the welding mechanism located above the station hole of the turntable.

[0008] Furthermore, the material moving mechanism is installed above the material conveying line. The material moving mechanism includes a translation module, a two-axis driving mechanism is connected to the translation module, and an internal support mechanism located above the material conveying line is connected to the lower part of the two-axis driving mechanism.

[0009] Furthermore, the translation module includes a first linear module, a second linear module, and a sliding plate connected to one end of the first linear module. The two-axis driving mechanism is connected to the sliding plate. A second linear module is slidably connected to the end of the first linear module away from the sliding plate. The first linear module is arranged perpendicular to the second linear module. The two-axis driving mechanism and the internal support mechanism are realized to perform planar movement by the two first linear modules and the second linear module arranged perpendicular to each other, thereby enabling the stator to be processed to be continuously conveyed above the material conveying turntable.

[0010] Furthermore, the two-axis driving mechanism includes a two-axis motor fixedly attached to the sliding plate. Lifting screw modules are connected to both output ends of the two-axis motor. The screws of the lifting screw modules pass through the sliding plate and the lower ends are both connected to a first mounting plate. The two-axis motor is fitted with the lifting screw modules to complete the lifting operation on the first mounting plate, thereby lifting the internal support mechanism.

[0011] Furthermore, the internal support mechanism includes a driving device fixedly attached to the lower surface of the first mounting plate. A second mounting plate is connected to the output end of the driving device. Internal support cylinders are attached to the lower surfaces of both ends of the second mounting plate. The internal support cylinders can be inserted into the stator to support the stator. The driving device rotates the second mounting plate, thereby exchanging the positions of the internal support cylinders on the lower surfaces of both ends of the second mounting plate, removing the stator to be processed on the material conveying line, and placing the processed stator on the material conveying line.

[0012] Furthermore, the locking mechanism is installed at the center of the rotating disk. A locking swivel mechanism for rotationally driving the locking mechanism is installed below the locking mechanism. The locking mechanism automatically completes the locking and unlocking of the tool. The locking swivel mechanism is used to rotate the locking mechanism so that the locking mechanism can correspond to the station holes corresponding to the welding mechanism and the tool insertion and removal mechanism.

[0013] Furthermore, the stator adjustment mechanism includes a second power source, a fixed frame, a movable plate, a second motor, and a storage table. A screw assembly is connected to the output end of the second power source. The screw assembly passes through the fixed frame in the vertical direction and its lower end is connected to the movable plate. A second motor with an upward output end is installed on the movable plate. A storage table is installed at the output end of the second motor. The storage table can move upward through the bracket. When the power source engages with the screw assembly, the screw assembly raises and lowers the movable plate. The storage table of the second motor protrudes the stator located in the station hole when the movable plate rises. The second motor rotates the storage table to rotate the stator, thereby engaging with the cutting device to cut off the flat copper wire located above the stator.

[0014] Compared with the prior art, the present invention has the following beneficial effects.

[0015] The present invention realizes the automatic supply of the flat wire motor stator and the automatic attachment of the tool by the fitting of the material conveying line, the material moving mechanism, the material conveying rotating disk, the tool insertion and removal mechanism, the crimping mechanism, the wire cutting mechanism, the welding mechanism, the locking mechanism, and the stator adjustment mechanism, and can perform the cutting and welding operations of the flat copper wire.

Brief Description of the Drawings

[0016]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Embodiments for Carrying out the Invention

[0017] Hereinafter, with reference to the drawings in the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the present invention.

[0018] As shown in Figure 1, the cutting and welding device for the flat angle motor stator includes a material transfer line 1, a material moving mechanism, a material transfer turntable 2, a tool loading and unloading mechanism 3, a crimping mechanism 4, a wire cutting mechanism 5, a welding mechanism 6, a locking mechanism 7, and a stator adjustment mechanism 8. The material transfer line 1 is used to transfer the stator to be processed and the processed stator, and the material transfer line 1 includes a double-row chain transfer line 120 and a jacking device 131. Both ends of the double-row chain transfer line 120 are connected to the transfer lines of the devices in other process steps. The jacking device 131 is installed below both ends of the line. The jacking device 131 is a cylinder, and the output end of the cylinder faces upward. The material moving mechanism is used to transport the stator to be processed on the material transfer line 1 to the material transfer turntable 2, and to return the processed stator on the material transfer turntable 2 to the material transfer line 1. The material transfer turntable 2 is provided with four station holes arranged around it. The material transfer turntable 2 can rotate the stator to be processed by rotation. The material transfer turntable 2 includes a power source located below, and the power source is a stepping motor. A swivel support is installed below the material transfer turntable 2. The output end of the stepping motor is connected to the swivel support and is used to intermittently rotate and drive the material transfer turntable 2. The locking mechanism 7 is installed in the middle of the material transfer turntable 2 and is used to unlock and lock the tool 9. The locking mechanism 7 has the same structure as the locking mechanism 7 disclosed in the publication number CN218775989U. Moreover, the tool 9 used is based on the same principle as the tool plate of the publication number CN218775989U, and the unlocking and locking principles of the tool 9 are also the same. Since no related improvements have been made, detailed descriptions are omitted here. The tool loading and unloading mechanism 3 is used to place the tool 9 on the stator to be processed. The tool loading and unloading mechanism 3 is the same as the mounting mechanism disclosed in the publication number CN218775989U, and the principle of loading and unloading the tool 9 is the same. Since no related improvements have been made in this application, detailed descriptions are omitted here. The crimping mechanism 4 is used to press and clamp the tool 9 to make it in close contact with the stator. The difference between the crimping mechanism 4 and the mounting mechanism disclosed in the publication number CN218775989U is that the crimping mechanism 4 does not have a stop block of the crimping mechanism 4. The wire cutting mechanism 5 is used to cut the extra flat copper wire above the stator. The welding mechanism 6 welds the cut flat copper wire. The tool loading and unloading mechanism 3, the crimping mechanism 4, the wire cutting mechanism 5, and the welding mechanism 6 are sequentially arranged around the upper part of the material transfer turntable 2 and correspond to the four station holes. A device frame is installed above the material transfer line 1. The material moving mechanism, the tool loading and unloading mechanism 3, the crimping mechanism 4, and the welding mechanism 6 are all attached to the device frame. A separate table for the wire cutting mechanism 5 is installed below the wire cutting mechanism 5.

[0019] The stator adjustment mechanism 8 is located below the station hole corresponding to the wire cutting mechanism 5 and is used to project and rotate the stator.

[0020] In this embodiment, the material moving mechanism is installed on the device frame above the material conveying line 1. The material moving mechanism includes a translation module 10, a two-axis drive mechanism 11 is connected to the translation module 10, and an internal support mechanism 12 located above the material conveying line 1 is connected to the lower part of the two-axis drive mechanism 11.

[0021] In this embodiment, the translation module 10 includes a first linear module 101, a second linear module 102, and a sliding plate 103 connected to one end of the first linear module 101. The two-axis drive mechanism 11 and the sliding plate 103 are fixedly connected by a screw. A second linear module 102 is slidably connected to the end of the first linear module 101 away from the sliding plate 103. The first linear module 101 is arranged perpendicular to the second linear module 102. The two-axis drive mechanism 11 and the internal support mechanism 12 are translated in a plane by the two perpendicular first linear modules and the second linear module.

[0022] In this embodiment, the two-axis drive mechanism 11 includes a two-axis motor 111 fixedly attached to the sliding plate 103. Lifting screw modules 112 are connected to both output ends of the two-axis motor 111. The screws of the lifting screw modules 112 pass through the sliding plate 103, and the lower ends are both connected to a first mounting plate 113. Four sliding rods for guiding are installed on the edges of the sliding plate 103 and the first mounting plate 113.

[0023] In this embodiment, the internal support mechanism 12 includes a driving device 121 fixedly attached to the lower surface of the first mounting plate 113. The driving device 121 is a motor. The output end of the driving device 121 faces downward and is fixedly connected to a second mounting plate 122. Internal support cylinders 123 are fixedly attached to the lower surfaces of both ends of the second mounting plate 122 by screws. There are three locking claws below the internal support cylinder 123 for controlling external expansion by a cylinder.

[0024] In this embodiment, a circular hole is opened in the middle of the material conveying turntable 2. The locking mechanism 7 is installed at the central part of the material conveying turntable 2. A locking swivel mechanism 13 for rotationally driving the locking mechanism 7 is attached to the lower part of the locking mechanism 7. The locking swivel mechanism 13 is a swivel type reducer.

[0025] In this embodiment, the stator adjustment mechanism 8 includes a second power source 81, a fixed frame 82, a movable plate 83, a second motor 84, and a storage table 85. Two screw assemblies 86 are transmission-connected to the output end of the second power source 81 via a belt. The screw assembly 86 passes through the fixed frame 82 in the vertical direction and its lower end is connected to the movable plate 83. A second motor 84 with an upward-facing output end is fixedly attached to the movable plate 83 by screws. A storage table 85 is fixedly attached to the output end of the second motor 84 by screws. A circular hole for the storage table 85 to pass through is opened in the upper part of the bracket.

[0026] When the present invention is in use, After the stator to be processed is transported to the designated position by the multi-chain conveyor line 120, the stator to be processed is protruded by the jack-up device 131. At this time, one internal support cylinder 123 on the lower surface of the second mounting plate 122 is located directly above the stator to be processed, and the locking claws of the internal support cylinder 123 are in a contracted state. After the stator to be processed is protruded, the stator to be processed is pierced by the locking claws. The internal support cylinder 123 controls the expansion of the locking claws to support the stator to be processed. At this time, the driving device 121 controls and rotates the second mounting plate 122. At this time, another internal support cylinder 123 of the second mounting plate 122 transports the processed stator taken out from the material transfer turntable 2, exchanges the positions of the unprocessed stator and the processed stator, the internal support cylinder 123 controls the contraction of the locking claws in the processed stator, and the jack-up device 131 lowers the processed stator and drops it onto the multi-chain conveyor line 120. At this time, the two-axis drive motor moves the lifting screw module 112 to move the mounting plate upward, and the first linear module 101 and the second linear module 102 position the internal support mechanism 12 above the processed stator above the material transfer mechanism. The two-axis drive motor is controlled to move the lifting screw module 112 to move the mounting plate downward, and the operation of exchanging the stator to be processed and the processed stator by the internal support mechanism 12 is repeated. The stator to be processed is placed in the station hole of the material transfer turntable 2, and by repeating this step, the cycle operation of supply and discharge is completed.

[0027] The tool inserting and removing mechanism 3 places the tool 9 at the upper end of the stator, rotates the material conveying turntable 2 by a power source to position the stator to be processed below the crimping mechanism 4. The crimping mechanism 4 is pressed down to make the tool 9 in close contact with the upper part of the stator. At this time, the locking mechanism 7 faces the pressed tool 9. After the locking mechanism 7 locks the tool 9, the locking mechanism 7 is opposed to the station hole corresponding to the tool inserting and removing mechanism 3 by the locking turning mechanism 13. At this time, there is a processed stator in the station hole. The locking mechanism 7 unlocks the tool 9 of the processed stator, and by repeating this step, the automatic attachment and locking of the tool 9 is completed.

[0028] The material conveying turntable 2 continues to rotate, positions the stator after the tool 9 is locked above the stator adjusting mechanism 8. The output end of the second power source 81 moves the screw assembly 86 to lift the second motor 84. At this time, the storage table 85 of the second motor 84 protrudes the stator located in the station hole when the movable plate 83 rises. The second motor 84 rotates the storage table 85 to rotate the stator, thereby fitting with the cutting device to cut off the flat angle copper wire located at the upper part of the stator.

[0029] The material conveying turntable 2 continues to rotate, positions the stator after the cutting process is completed below the welding device. After the welding by the welding device is completed, it is conveyed to the starting position of the material conveying turntable 2 to complete the cutting and welding operation of the stator.

[0030] Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments, or perform equivalent substitutions for some of their technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principle of the present invention should all be included within the protection scope of the present invention.

Explanation of Reference Numerals

[0031] 1 Material conveying line 120 Double-row chain conveying line 131 Jacking-up device 2 Material conveying turntable 3 Tool loading and unloading mechanism 4 Crimping mechanism 5 Wire cutting mechanism 6 Welding mechanism 7 Locking mechanism 8 Stator adjustment mechanism 81 Second power source 82 Fixed frame 83 Movable plate 84 Second motor 85 Storage table 86 Screw assembly 9 Tool 10 Translational module 101 First linear module 102 Second linear module 103 Sliding plate 11 Two-axis drive mechanism 111 Two-axis motor 112 Lifting screw module 113 First mounting plate 12 Internal support mechanism 121 Driving device 122 Second mounting plate 123 Internal support cylinder 13 Locking swivel mechanism

Claims

1. A cutting and welding device for a rectangular wire motor stator includes a material conveying line (1), a material moving mechanism, a material conveying turntable (2), a tool inserting and removing mechanism (3), a crimping mechanism (4), a wire cutting mechanism (5), a welding mechanism (6), a locking mechanism (7), and a stator adjusting mechanism (8). The material conveying line (1) is used to convey the stator to be processed and the processed stator, The material transfer mechanism is used to transport the stators to be processed on the material conveying line (1) to the material conveying turntable (2) and to return the processed stators on the material conveying turntable (2) to the material conveying line (1). The material conveying turntable (2) is provided with four station holes arranged around its periphery, and the material conveying turntable (2) can rotate the stator of the workpiece by rotating; The locking mechanism (7) is installed in the center of the material conveying turntable (2) and is used to unlock and lock the tool (9); The tool insertion / removal mechanism (3) is used to place the tool (9) on the stator to be processed, The crimping mechanism (4) is used to press the tool (9) to make it tightly contact with the stator; The wire cutting mechanism (5) is used to cut off the excess flat copper wire above the stator. The welding mechanism (6) welds the flat copper wire remaining after cutting off the excess flat copper wire, The tool insertion / removal mechanism (3), crimping mechanism (4), wire cutting mechanism (5) and welding mechanism (6) are sequentially arranged around the upper periphery of the material conveying turntable (2), and correspond to the four station holes, respectively; The stator adjusting mechanism (8) is located under the station hole corresponding to the wire cutting mechanism (5) and is used to protrude and rotate the stator; The material moving mechanism is installed above the material conveying line (1), and the material moving mechanism includes a translation module (10), a two-axis drive mechanism (11) is connected to the translation module (10), and an internal support mechanism (12) located above the material conveying line (1) is connected to the lower part of the two-axis drive mechanism (11).

2. 2. The cutting and welding device for a rectangular wire motor stator according to claim 1, wherein the translation module (10) comprises a first linear module (101), a second linear module (102), and a sliding plate (103) connected to one end of the first linear module (101), the two-axis drive mechanism (11) is connected to the sliding plate (103), the second linear module (102) is slidably connected to the end of the first linear module (101) away from the sliding plate (103), and the first linear module (101) is arranged perpendicular to the second linear module (102).

3. The cutting and welding device for a rectangular wire motor stator according to claim 2, characterized in that the two-axis driving mechanism (11) comprises a two-axis motor (111) fixedly mounted on a sliding plate (103), and two output ends of the two-axis motor (111) are both connected to a lifting screw module (112), and the screws of the lifting screw module (112) pass through the sliding plate (103), and both lower ends are connected to a first mounting plate (113).

4. The cutting and welding device for a rectangular wire motor stator according to claim 3, characterized in that the internal support mechanism (12) comprises a drive unit (121) fixedly mounted on the underside of the first mounting plate (113), the output end of the drive unit (121) is connected to a second mounting plate (122), and an internal support cylinder (123) is mounted on the underside of both ends of the second mounting plate (122), so that the drive unit (121) can rotate the second mounting plate (122).

5. 2. The cutting and welding device for a rectangular wire motor stator according to claim 1, wherein the locking mechanism (7) is installed in the center of the turntable, and a locking rotation mechanism (13) for rotating the locking mechanism (7) is installed below the locking mechanism (7).

6. The cutting and welding device for a rectangular wire motor stator according to claim 1, characterized in that the stator adjustment mechanism (8) comprises a second power source (81), a fixed frame (82), a movable plate (83), a second motor (84), and a storage stand (85), wherein a screw assembly (86) is connected to the output end of the second power source (81), the screw assembly (86) passes through the fixed frame (82) vertically, and its lower end is connected to the movable plate (83), a second motor (84) is installed on the movable plate (83) with its output end facing upward, and the storage stand (85) is installed at the output end of the second motor (84).

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