Armature piezoresistor welding jig

Abstract

The utility model provides an armature piezoresistor welding jig which comprises a clamping mechanism, and the clamping mechanism comprises a clamping unit which can be switched between a clamping state and a separation state; the shaft core assembly comprises a shaft tube and a clamp arranged in the shaft tube, and the clamp can move between a locking position and an unlocking position; the shaft core driving assembly is used for driving the shaft core assembly and driving the armature and the piezoresistor to rotate; the clamping driving assembly comprises a driving unit, a transmission unit and a locking unit, the transmission unit and the locking unit are matched with the driving unit in a driving mode, the transmission unit is used for driving the clamping unit to be switched between the clamping state and the separation state, and the locking unit is used for driving the clamp to be switched between the locking position and the unlocking position. According to the armature piezoresistor welding jig, by arranging the clamping mechanism, the armature can be rapidly replaced and fixed, positioning and fixing of the armature are more accurate, and the welding work efficiency of the welding jig is improved.

Description

Technical Field

[0001] This application relates to the technical field of welding jigs, and particularly to an armature varistor welding jig. Background Art

[0002] The motor rotor assembly usually includes components such as a rotor, an iron core, a winding, a commutator, and a varistor. Welding the bobbin is a process in motor production, which is to weld the bobbin on the lug (commutator segment) of the commutator of the armature. The bobbin welded on the armature is essentially a varistor, that is, the bobbin is welded on the lug of the commutator of the armature. Before welding, the armature and the varistor need to be installed on the welding jig, and after welding, the welded armature and varistor need to be taken out and new armatures and varistors to be welded need to be replaced. However, the mechanisms for fixing and disassembling the armature of the existing welding jig are relatively complex, the replacement speed is slow, and the positioning and fixing effect of the armature is poor. Based on this, it is necessary to improve the structure of the existing armature varistor welding jig to solve the above problems. Summary of the Invention

[0003] In view of this, this application provides an armature varistor welding jig that can effectively solve the above problems.

[0004] This application provides an armature varistor welding jig, including a clamping mechanism, and the clamping mechanism includes: a clamping unit that can switch between a clamping state and a separating state. In the clamping state, the clamping unit clamps the upper part of the armature, and in the separating state, the clamping unit releases the armature; a core assembly including a shaft tube and a fixture provided in the shaft tube. The fixture can move between a locking position and an unlocking position. In the locking position, the fixture clamps the lower part of the armature, and in the unlocking position, the fixture releases the armature. The clamping unit is supported at the top of the shaft tube; a core driving assembly for driving the core assembly and driving the armature and the varistor to rotate; and a clamping driving assembly including a driving unit and a transmission unit and a locking unit that are drivingly cooperated with the driving unit. The transmission unit is used to drive the clamping unit to switch between the clamping state and the separating state, and the locking unit is used to drive the fixture to switch between the locking position and the unlocking position.

[0005] In one embodiment, the core driving assembly includes a core driving motor, a core transmission belt, and a core transmission gear. The core driving motor has a core driving gear. The core transmission belt is sleeved on the core driving gear and the core transmission gear in a transmissible manner, and the core transmission gear is sleeved and fixed on the shaft tube.

[0006] In one embodiment, the driving unit includes a clamping drive motor, a clamping transmission belt, a clamping transmission gear and a driving member, the driving member includes a driving body and a toggle portion extending radially outward from the driving body, two toggle portions are provided and are arranged radially opposite to each other along the driving body, the clamping drive motor has a clamping drive gear, the clamping transmission belt can be transmission-connected to the clamping drive gear and the clamping transmission gear, the clamping transmission gear is located above the shaft core transmission gear and is mounted on the outside of the shaft tube through a first bearing, the driving body is located above the clamping transmission gear and is fixedly connected to the clamping transmission gear, and the driving body is mounted on the outside of the shaft tube through a second bearing.

[0007] In one embodiment, two transmission units are provided, and the two transmission units are provided on radially opposite sides of the shaft tube. The transmission unit includes a sliding rod and a support plate and a column connected to the opposite ends of the sliding rod. The column is located on the rotation path of the toggle part to cooperate with the driving of the toggle part. A pushing part is provided on the support plate, and the pushing part cooperates with the driving of the clamping unit. The toggle part can drive the transmission unit to slide in the radial direction of the shaft tube through the column, so that the pushing part pushes the clamping unit to switch between a clamping state and a separation state.

[0008] In one embodiment, the armature varistor welding jig includes a mounting frame, the mounting frame is provided with a sliding hole for the sliding rod to slide corresponding to the sliding rod, and the support plate is supported on the mounting frame; the shaft core drive motor and the clamping drive motor are both fixedly mounted on the mounting frame, and a rotating seat is provided at the bottom of the mounting frame, and the shaft tube can be rotatably inserted into the rotating seat.

[0009] In one embodiment, the locking unit includes an annular member, a locking portion protruding from the outer wall of the annular member, and a driven rod connected to the bottom of the annular member, the locking portion can be movably passed through the shaft tube for clamping or releasing the clamp, and the driven rod is located on the rotation path of the toggle portion to cooperate with the driving of the toggle portion; four driven rods are provided, two of which are located on both sides of one of the toggle portions, and the other two are located on both sides of another of the toggle portions.

[0010] In one embodiment, the clamp includes a fixing portion and a clamping portion connected to one end of the fixing portion, the fixing portion is fixedly connected to the inner wall of the shaft tube, the clamping portion includes a plurality of elastic clamping arms movably arranged in a circumferential direction, the bottom end of each of the elastic clamping arms is connected to the fixing portion, a clamping position for clamping the armature is formed between the top ends of the plurality of elastic clamping arms, and the locking portion is arranged corresponding to the elastic clamping arm.

[0011] In one embodiment, the clamping unit is supported outside the top end of the shaft tube through a third bearing. The clamping unit includes two clamping bodies arranged oppositely. A clamping space for clamping the armature is formed between the two clamping bodies. The clamping space communicates with the clamping position of the fixture. A convex column is provided at the bottom end of the clamping body. The convex column is in driving cooperation with the pushing part. An elastic member is provided between the two clamping bodies. The elastic member applies an elastic biasing force to the clamping body to move it towards the clamping state. An installation position for placing a varistor is provided at the top of the clamping unit.

[0012] In one embodiment, first sensors are respectively provided on opposite sides of the clamping unit. One of the first sensors is used to emit detection light, and the other first sensor is used to receive the detection light. The clamping unit is provided with a detection hole through which the detection light passes. The detection hole passes through the clamping space. The clamping mechanism includes a second sensor for detecting the rotation parameters of the shaft core transmission gear and a third sensor for detecting the rotation parameters of the clamping transmission gear.

[0013] In one embodiment, the armature varistor welding jig includes a fixed seat and a positioning mechanism. The clamping mechanism is installed on the mounting frame. The mounting frame is rotatably connected to the fixed seat through a rotating shaft. One end of the rotating shaft is fixedly connected with a rotating handle. The positioning mechanism includes a base fixedly connected to the fixed seat, a positioning bracket obliquely arranged on the base, a positioning collet arranged at the top end of the positioning bracket, and a turning cylinder arranged on one side of the base. The turning cylinder is in driving connection with the rotating handle to drive the clamping mechanism to deflect relative to the fixed seat to the positioning bracket. The positioning collet is used to clamp and fix the top end of the armature. The positioning collet is slidably arranged on the positioning bracket through a sliding cylinder.

[0014] In summary, the present application provides an armature varistor welding jig, which includes a clamping mechanism. The clamping mechanism includes: a clamping unit that can be switched between a clamping state and a separating state. In the clamping state, the clamping unit clamps the upper part of the armature, and in the separating state, the clamping unit releases the armature; a core assembly including a shaft tube and a fixture disposed within the shaft tube. The fixture can move between a locking position and an unlocking position. In the locking position, the fixture clamps the lower part of the armature, and in the unlocking position, the fixture releases the armature. The clamping unit is supported at the top of the shaft tube; a core driving assembly for driving the core assembly and driving the armature and the varistor to rotate; and a clamping driving assembly including a driving unit, a transmission unit drivingly cooperating with the driving unit, and a locking unit. The transmission unit is used to drive the clamping unit to switch between the clamping state and the separating state, and the locking unit is used to drive the fixture to switch between the locking position and the unlocking position. The armature varistor welding jig of the present application can achieve rapid replacement and fixation of the armature through the setting of the clamping mechanism, and the positioning and fixation of the armature are more accurate, improving the welding work efficiency of the welding jig. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 FIG. is a perspective view of the armature varistor welding jig of the present application.

[0016] Figure 2 is Figure 1 a perspective cross-sectional view of the armature varistor welding jig in

[0017] Figure 3 is Figure 1 a partial structural view of the armature varistor welding jig in

[0018] Figure 4 is Figure 1 a partial structural view of the armature varistor welding jig in another angle in

[0019] Figure 5 is Figure 1 a perspective view of the fixture in DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] Before describing the embodiments in detail, it should be understood that the present application is not limited to the detailed structures or element arrangements described in the following text or the drawings of the present application. The present application can be implemented in other ways. Moreover, it should be understood that the wording and terms used herein are only for descriptive purposes and should not be construed restrictively. The terms "including", "comprising", "having" and the like used herein are intended to include the matters listed thereafter, their equivalents and other additional matters. In particular, when describing "a certain element", the present application does not limit the number of such elements to one, and multiple elements can also be included.

[0021] Please refer to simultaneouslyFigures 1 to 5 As shown, the present application provides an armature varistor welding jig 10 (hereinafter referred to as welding jig 10), which includes a clamping mechanism 12, and the clamping mechanism 12 includes a clamping unit 14, a shaft core assembly 16, a shaft core drive assembly 18 and a clamping drive assembly 20. Among them, the clamping unit 14 can be switched between a clamping state and a separation state. In the clamping state, the clamping unit 14 clamps the upper part of the armature 22, and in the separation state, the clamping unit 14 releases the armature 22. The shaft core assembly 16 includes a shaft tube 24 and a clamp 26 disposed in the shaft tube 24. The clamp 26 can move between a locked position and an unlocked position. In the locked position, the clamp 26 is used to clamp the lower part of the armature 22, and in the unlocked position, the clamp 26 releases the armature 22, and the clamping unit 14 is supported on the top of the shaft tube 24. The shaft core drive assembly 18 is used to drive the shaft core assembly 16 and drive the armature 22 and the varistor 28 to rotate. The clamping drive assembly 20 includes a driving unit 30 and a transmission unit 32 and a locking unit 34 driven by the driving unit 30. The transmission unit 32 is used to drive the clamping unit 14 to switch between the clamping state and the separation state, and the locking unit 34 is used to drive the clamp 26 to switch between the locked position and the unlocked position. The welding fixture 10 of the present application can realize the rapid replacement and fixation of the armature 22 by setting the clamping mechanism 12, and the positioning and fixation of the armature 22 is more accurate, thereby improving the welding work efficiency of the welding fixture 10.

[0022] In the illustrated embodiment, the shaft core drive assembly 18 includes a shaft core drive motor 36, a shaft core drive belt 38 and a shaft core drive gear 40. The shaft core drive motor 36 has a shaft core drive gear 42. The shaft core drive belt 38 can be transmission-connected to the shaft core drive gear 42 and the shaft core drive gear 40. The shaft core drive gear 40 is sleeved and fixed on the shaft tube 24, so that when the shaft core drive gear 40 rotates, it can drive the shaft tube 24 to rotate.

[0023] The driving unit 30 includes a clamping driving motor 44, a clamping transmission belt 46, a clamping transmission gear 48 and a driving member 50. The driving member 50 includes a driving body 52 and a toggle portion 54 extending radially outward from the driving body 52. ​​Two toggle portions 54 are provided and are arranged radially opposite to each other along the driving body 52. ​​The clamping driving motor 44 has a clamping driving gear 56. The clamping transmission belt 46 can be transmission-connected to the clamping driving gear 56 and the clamping transmission gear 48. The clamping transmission gear 48 is located above the shaft core transmission gear 40 and is sleeved on the outside of the shaft tube 24 through a first bearing 58. The driving body 52 is located above the clamping transmission gear 48 and is fixedly connected to the clamping transmission gear 48, and the driving body 52 is sleeved on the outside of the shaft tube 24 through a second bearing 60.

[0024] In the illustrated embodiment, two transmission units 32 are provided, and the two transmission units 32 are arranged on opposite radial sides of the shaft tube 24. Each transmission unit 32 includes a slide rod 62 and a support plate 64 and a column 66 connected to opposite ends of the slide rod 62. The column 66 is located on the rotation path of the toggle portion 54 to cooperate with the driving of the toggle portion 54. A pushing portion 68 is provided on the support plate 64, and the pushing portion 68 cooperates with the driving of the clamping unit 14. The toggle portion 54 can drive the transmission unit 32 to slide in the radial direction of the shaft tube 24 through the column 66, so that the pushing portion 68 pushes the clamping unit 14 to switch between the clamping state and the separation state.

[0025] Furthermore, the welding jig 10 further includes a mounting frame 70, and the mounting frame 70 is provided with a sliding hole 72 for the sliding rod 62 to slide corresponding to the sliding rod 62, and the support plate 64 is supported on the mounting frame 70. The shaft core drive motor 36 and the clamping drive motor 44 are both fixedly connected to the mounting frame 70 through a fixing plate, and a rotating seat 74 is provided at the bottom of the mounting frame 70, and the shaft tube 24 is rotatably plugged into the rotating seat 74.

[0026] In the illustrated embodiment, the locking unit 34 includes an annular member 76, a locking portion 78 protruding from the outer wall of the annular member 76, and a driven rod 80 connected to the bottom of the annular member 76. The locking portion 78 is movably disposed through the shaft tube 24 for clamping or releasing the clamp 26. The driven rod 80 is located on the rotation path of the toggle portion 54 to drive and cooperate with the toggle portion 54. In this embodiment, four driven rods 80 are provided, two of which are located on both sides of one of the toggle portions 54, and the other two driven rods 80 are located on both sides of the other toggle portion 54. The clamp 26 includes a fixing portion 82 and a clamping portion 84 connected to one end of the fixing portion 82. The fixing portion 82 is fixedly connected to the inner wall of the shaft tube 24. The clamping portion 84 includes a plurality of elastic clamping arms 86 movably arranged in the circumferential direction. The bottom end of each elastic clamping arm 86 is connected to the fixing portion 82. A clamping position 88 for clamping the armature 22 is formed between the top ends of the plurality of elastic clamping arms 86. The locking portion 78 is arranged corresponding to the elastic clamping arm 86 so that the clamping portion 84 clamps the lower part of the armature 22 through a pushing action.

[0027] Preferably, the clamping unit 14 is supported outside the top end of the shaft tube 24 by a third bearing 90. The clamping unit 14 includes two relatively arranged clamping bodies 14a. A clamping space 92 for clamping the armature 22 is formed between the two clamping bodies 14a. The clamping space 92 communicates with the clamping position 88 of the fixture 26. A convex column 94 is provided at the bottom end of the clamping body 14a. The convex column 94 is in driving cooperation with the pushing portion 68. An elastic member 96, such as a spring, is provided between the two clamping bodies 14a. The elastic member 96 applies an elastic biasing force to the clamping body 14a to move it toward the clamping state. A placement position for placing the varistor 28 is provided at the top of the clamping unit 14. First sensors 98 are respectively provided on opposite sides of the clamping unit 14. One of the first sensors 98 is used to emit detection light, and the other first sensor 98 is used to receive the detection light. The clamping unit 14 is provided with a detection hole through which the detection light passes, and the detection hole passes through the clamping space 92. The clamping mechanism 12 further includes a second sensor 100 for detecting the rotation parameters of the shaft core transmission gear 40 and a third sensor 102 for detecting the rotation parameters of the clamping transmission gear 48. The second sensor 100 and the third sensor 102 are both fixedly installed on the mounting bracket 70.

[0028] In the illustrated embodiment, the welding jig 10 includes a fixed base 104 and a positioning mechanism 106. The clamping mechanism 12 is installed on the mounting bracket 70. The mounting bracket 70 is rotatably connected to the fixed base 104 through a rotating shaft 108. One end of the rotating shaft 108 is fixedly connected with a rotating handle 110. The first sensor 98 is fixedly installed at the top end of the fixed base 104. The positioning mechanism 106 includes a base 112 fixedly connected to the fixed base 104, a positioning bracket 114 inclined on the base 112, a positioning collet 116 provided at the top end of the positioning bracket 114, and a flipping cylinder 118 provided on one side of the base 112. The flipping cylinder 118 is in driving connection with the rotating handle 110 to drive the clamping mechanism 12 to deflect relative to the fixed base 104 to the positioning bracket 114. The positioning collet 116 is used to clamp the top end of the fixed armature 22. At this time, a welding operation can be performed directly above. The positioning collet 116 is slidably arranged on the positioning bracket 114 through a sliding cylinder 120, so that the positioning collet 116 can be moved by the cylinder 120 for positioning and installation. After welding is completed, the positioning collet 116 releases the armature 22, the cylinder 120 drives the positioning collet 116 to move away, the flipping cylinder 118 drives the clamping mechanism 12 to flip back to its original position, the welded armature 22 and varistor 28 are disassembled, and the armature 22 and varistor 28 to be welded are installed, and the above actions are repeated.

[0029] The welding jig 10 of the present application is used for clamping and fixing the armature 22 before welding. The armature 22 has an armature shaft, on which a core is sleeved and a winding wound around the core is provided. A commutator is arranged on the armature shaft, and the commutator segments of the commutator extend from one side of the core for welding connection with the contacts of a varistor 28 sleeved on the armature shaft.

[0030] In summary, the present application provides an armature varistor welding jig, including a clamping mechanism. The clamping mechanism includes: a clamping unit that can be switched between a clamping state and a separating state. In the clamping state, the clamping unit clamps the upper part of the armature. In the separating state, the clamping unit releases the armature; a shaft core assembly including a shaft tube and a fixture arranged in the shaft tube. The fixture can move between a locking position and an unlocking position. In the locking position, the fixture clamps the lower part of the armature. In the unlocking position, the fixture releases the armature. The clamping unit is supported at the top of the shaft tube; a shaft core driving assembly for driving the shaft core assembly and driving the armature and the varistor to rotate; and a clamping driving assembly including a driving unit and a transmission unit and a locking unit that are drivingly matched with the driving unit. The transmission unit is used to drive the clamping unit to switch between the clamping state and the separating state, and the locking unit is used to drive the fixture to switch between the locking position and the unlocking position. The armature varistor welding jig of the present application can realize the rapid replacement and fixing of the armature by setting the clamping mechanism, and the positioning and fixing of the armature are more accurate, improving the welding work efficiency of the welding jig.

[0031] The concepts described herein can be implemented in other forms without departing from their spirit and characteristics. The specific embodiments disclosed should be considered illustrative rather than restrictive. Therefore, the scope of the present application is determined by the appended claims rather than by the previous descriptions. Any changes within the literal meaning and equivalent scope of the claims should fall within the scope of these claims.

Claims

1. An armature varistor welding jig, characterized in that: The invention comprises a clamping mechanism, wherein the clamping mechanism comprises: A clamping unit, which can be switched between a clamping state and a separation state. In the clamping state, the clamping unit clamps the upper part of the armature, and in the separation state, the clamping unit releases the armature; A shaft core assembly, comprising a shaft tube, a clamp disposed in the shaft tube, the clamp being movable between a locking position and an unlocking position, wherein the clamp clamps the lower portion of the armature in the locking position, and releases the armature in the unlocking position, and the clamping unit is supported on the top end of the shaft tube; A shaft core driving assembly, used to drive the shaft core assembly and drive the armature and the varistor to rotate; and The clamping drive assembly includes a driving unit and a transmission unit and a locking unit that cooperate with the driving unit. The transmission unit is used to drive the clamping unit to switch between the clamping state and the separation state, and the locking unit is used to drive the clamp to switch between the locking position and the unlocking position.

2. The armature varistor welding jig according to claim 1, characterized in that: The shaft core drive assembly includes a shaft core drive motor, a shaft core transmission belt and a shaft core transmission gear. The shaft core drive motor has a shaft core drive gear. The shaft core transmission belt can be transmission-connected to the shaft core drive gear and the shaft core transmission gear. The shaft core transmission gear is sleeved and fixed on the shaft tube.

3. The armature varistor welding jig according to claim 2, characterized in that: The driving unit includes a clamping driving motor, a clamping transmission belt, a clamping transmission gear and a driving member, the driving member includes a driving body and a toggle portion extending radially outward from the driving body, two toggle portions are provided and are arranged radially opposite to each other along the driving body, the clamping driving motor has a clamping driving gear, the clamping transmission belt can be transmission-connected to the clamping driving gear and the clamping transmission gear, the clamping transmission gear is located above the shaft core transmission gear and is mounted on the outside of the shaft tube through a first bearing, the driving body is located above the clamping transmission gear and is fixedly connected to the clamping transmission gear, and the driving body is mounted on the outside of the shaft tube through a second bearing.

4. The armature varistor welding jig according to claim 3, characterized in that: Two transmission units are provided, and the two transmission units are provided on two opposite radial sides of the shaft tube. The transmission unit includes a sliding rod and a support plate and a column connected to the opposite ends of the sliding rod. The column is located on the rotation path of the toggle part to cooperate with the driving of the toggle part. A pushing part is provided on the support plate, and the pushing part cooperates with the driving of the clamping unit. The toggle part can drive the transmission unit to slide in the radial direction of the shaft tube through the column, so that the pushing part pushes the clamping unit to switch between the clamping state and the separation state.

5. The armature varistor welding jig according to claim 4, characterized in that: The armature varistor welding jig includes a mounting frame, the mounting frame is provided with a sliding hole for the sliding rod to slide corresponding to the sliding rod, and the support plate is supported on the mounting frame; the shaft core drive motor and the clamping drive motor are both fixedly mounted on the mounting frame, and a rotating seat is provided at the bottom of the mounting frame, and the shaft tube can be rotatably inserted into the rotating seat.

6. The armature varistor welding jig according to claim 4, characterized in that: The locking unit includes an annular member, a locking portion protruding from the outer wall of the annular member, and a driven rod connected to the bottom of the annular member. The locking portion can be movably passed through the shaft tube for clamping or releasing the clamp. The driven rod is located on the rotation path of the toggle portion to cooperate with the driving of the toggle portion. Four driven rods are arranged, two of which are located on both sides of one of the toggle portions, and the other two are located on both sides of another of the toggle portions.

7. The armature varistor welding jig according to claim 6, characterized in that: The clamp includes a fixing portion and a clamping portion connected to one end of the fixing portion, the fixing portion is fixedly connected to the inner wall of the shaft tube, the clamping portion includes a plurality of elastic clamping arms movably arranged in a circumferential direction, the bottom end of each of the elastic clamping arms is connected to the fixing portion, a clamping position for clamping the armature is formed between the top ends of the plurality of elastic clamping arms, and the locking portion is arranged corresponding to the elastic clamping arm.

8. The armature varistor welding jig according to claim 4, characterized in that: The clamping unit is supported outside the top end of the shaft tube by a third bearing, and the clamping unit includes two clamping bodies arranged opposite to each other, a clamping space for clamping the armature is formed between the two clamping bodies, the clamping space is communicated with the clamping position of the clamp, a convex column is provided at the bottom end of the clamping body, and the convex column is driven to cooperate with the pushing part, an elastic member is provided between the two clamping bodies, and the elastic member applies an elastic bias to the clamping body to move it to the clamping state; a placement position for placing a varistor is provided at the top of the clamping unit.

9. The armature varistor welding jig according to claim 8, characterized in that: First sensors are respectively provided on opposite sides of the clamping unit, one of the first sensors is used to emit detection light, and the other of the first sensors is used to receive the detection light. The clamping unit is provided with a detection hole for the detection light to pass through, and the detection hole passes through the clamping space; the clamping mechanism includes a second sensor for detecting the rotation parameters of the shaft core transmission gear and a third sensor for detecting the rotation parameters of the clamping transmission gear.

10. The armature varistor welding jig according to claim 5, characterized in that: The armature varistor welding jig includes a fixed seat and a positioning mechanism, the clamping mechanism is installed on the mounting frame, the mounting frame and the fixed seat are rotatably connected through a rotating shaft, and a rotating handle is fixedly connected to one end of the rotating shaft; the positioning mechanism includes a base fixedly connected to the fixed seat, a positioning bracket obliquely arranged on the base, a positioning sleeve arranged on the top of the positioning bracket and a flip cylinder arranged on one side of the base, the flip cylinder is drivingly connected to the rotating handle to drive the clamping mechanism to deflect to the positioning bracket relative to the fixed seat, the positioning sleeve is used to clamp and fix the top of the armature, and the positioning sleeve is slidably arranged on the positioning bracket through a sliding cylinder.

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