Round matrix transfer clamping jaw mechanism for stator iron core scattered sheets

Abstract

The utility model relates to the technical field of motor processing devices, in particular to a stator iron core scattered sheet circular matrix transfer clamping jaw mechanism which comprises a four-jaw air cylinder, L-shaped clamping jaws are connected to four pistons of the four-jaw air cylinder, and floating clamping jaw assemblies are connected to the L-shaped clamping jaws. A positioning assembly is arranged at the position, corresponding to the axis, of the bottom of the four-claw air cylinder. The inner side of each floating clamping jaw assembly and the outer side of the positioning assembly form an annular clamping cavity, and the inner diameter of the clamping cavity changes under synchronous driving of the L-shaped clamping jaws. The mechanism is simple in structure and good in clamping effect on the stator iron core scattered sheet circular matrix, the stator iron core scattered sheet circular matrix cannot be damaged, and the assembling efficiency of a motor can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of motor processing devices, in particular to a stator iron core scattered slice circular matrix transfer clamp mechanism. Background Art

[0002] A servo motor is an engine that controls the operation of mechanical components in a servo system. It is an auxiliary motor indirect speed change device. It can convert voltage signals into torque and speed to drive the control object. The rotor speed of the servo motor is controlled by the input signal and can respond quickly. It has the characteristics of small electromechanical time constant, high linearity, and starting voltage. Its working principle can be simply summarized as: input control signal → servo controller → servo motor → output motion. The servo system consists of a servo motor, a servo controller, and a feedback device. When the servo motor receives a pulse signal, it will rotate an angle corresponding to a pulse to achieve displacement.

[0003] The structure of a servo motor is mainly composed of stators, rotors, encoders and other components. The stator of a servo motor is usually made of laminated silicon steel sheets, and two-phase or three-phase windings are embedded in the surface slots. These windings are used to generate a rotating magnetic field. The rotor is the rotating part of the servo motor, and its structure is related to the type of motor. For permanent magnet servo motors, the rotor is usually composed of permanent magnets, which rotate in the magnetic field generated by the stator.

[0004] Servo motors are widely used in many fields, such as industrial automation, electronic equipment, transportation, printing and packaging, and robots. They have the advantages of high precision, high speed, strong adaptability, good stability, short dynamic response time, and good comfort. Among them, the loose stator is a stator that is disassembled into individual unit cores. Each core is independently wound as an excitation winding, and then a plurality of stator blocks are fitted into a circle, and then nested in a ring-shaped tooling to assemble the stator of the motor. However, in the production process of the servo motor, it is necessary to assemble the plurality of cores that have been wound together so that the plurality of cores are assembled into a circle and connected to each other; in this process, it is first necessary to pre-tighten the plurality of cores to connect the plurality of cores to each other in a circle, and then squeeze the pre-tightened plurality of cores into the tooling so that the plurality of cores are tightly combined with the tooling. In addition, in order to facilitate assembly, the stator core fragments in the form of a circular matrix need to be transferred to a clamping fixture to achieve a close combination with the stator. However, in the prior art, the spliced ​​stator core fragments circular matrix is ​​usually not clamped well during the transfer process. If improper force is used, the stator core fragments in the stator core fragment circular matrix will be shifted.

[0005] Therefore, a new technical solution is urgently needed to solve the above technical problems. Utility Model Content

[0006] The purpose of the utility model is to overcome the above-mentioned problems of the prior art and provide a stator core loose slice circular matrix transfer clamping mechanism for solving the problem that the prior art usually cannot perform high-precision intelligent clamping of the spliced ​​stator core loose slice circular matrix during the transfer process.

[0007] The above objectives are achieved through the following technical solutions:

[0008] A stator core scattered slice circular matrix transfer jaw mechanism comprises a four-jaw cylinder, four pistons of which are connected with L-shaped jaws, and a floating jaw assembly is connected with the L-shaped jaw; a positioning assembly is arranged at the axial position corresponding to the bottom of the four-jaw cylinder; the inner side of each floating jaw assembly and the outer side of the positioning assembly form a circular clamping cavity, and the inner diameter of the clamping cavity changes under the synchronous drive of each L-shaped jaw.

[0009] Furthermore, the floating clamp assembly includes an arc-shaped support, a plurality of floating block grooves are arranged on the inner wall of the arc-shaped support, floating blocks are movably embedded in the floating block grooves, and are longitudinally limited by pressure plates arranged on the upper and lower sides of the arc-shaped support; a transition plate fixing groove is opened on the outer wall of the arc-shaped support, and is connected to the L-shaped clamp through the transition plate.

[0010] Furthermore, the floating block embedding groove is T-shaped, and correspondingly, the floating block is T-shaped and includes a floating limit seat and a floating boss connected to each other, the floating limit seat is embedded in the floating block embedding groove, and the floating boss extends out of the floating block embedding groove.

[0011] Furthermore, a spring is provided between the floating limit seat and the inner wall of the floating block embedding groove.

[0012] Furthermore, a spring tightening screw hole is provided on the inner wall of the floating embedding groove, and a spring tightening screw passes through the spring tightening screw hole along the outer side of the arc-shaped support to adjust the tightness of the spring.

[0013] Furthermore, the curvature of the inner wall of the arc-shaped support is 90°.

[0014] Furthermore, vertical ribs are arranged on the outer end surface of the floating boss.

[0015] Furthermore, in the same arc-shaped support, there are three floating block grooves, including a middle floating block groove arranged at the center position, and a left floating block groove and a right floating block groove arranged on both sides of the middle floating block groove; correspondingly, the floating blocks include a left floating block, a middle floating block and a right floating block.

[0016] Furthermore, the positioning assembly includes a central positioning shaft arranged at an axial position corresponding to the bottom of the four-claw cylinder, a central positioning core is sleeved on the central positioning shaft, and is limited by a central pressure plate.

[0017] Furthermore, a first key groove is formed on the outer wall of the center positioning shaft, and a second key groove is formed on the inner wall of the center positioning core, and the first key groove and the second key groove are connected by a positioning key.

[0018] The utility model provides a stator core scattered circular matrix transfer clamp mechanism, which realizes the positioning of the stator core scattered circular matrix to be clamped by a positioning component; four floating clamp assemblies are driven by a four-claw cylinder as a driving part to realize the clamping or loosening of the outer wall of the stator core scattered circular matrix, thereby realizing subsequent continuous displacement. The mechanism is not only simple in structure, but also has a good clamping effect on the stator core scattered circular matrix, and will not cause damage to the stator core scattered circular matrix, and can effectively promote the assembly efficiency of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural schematic diagram of a stator core scattered sheet circular matrix transfer clamp mechanism described in the utility model;

[0020] Figure 2 It is a cross-sectional view of a stator core scattered sheet circular matrix transfer clamp mechanism described in the utility model;

[0021] Figure 3 It is an exploded view of a stator core scattered circular matrix transfer clamp mechanism described in the utility model;

[0022] Figure 4 It is a structural schematic diagram of a floating clamping jaw assembly in a stator core scattered sheet circular matrix transfer clamping jaw mechanism described in the utility model;

[0023] Figure 5 It is a top view of a floating clamping assembly in a stator core scattered slice circular matrix transfer clamping mechanism described in the utility model.

[0024] Graphic marking:

[0025] 1- Four-claw cylinder;

[0026] 2-L-shaped jaws;

[0027] 3- floating clamping jaw assembly, 301- arc support, 302- floating block embedding groove, 303- floating block, 304- pressing plate, 305- transition plate fixing groove, 306- transition plate, 307- spring, 308- spring clamping screw hole, 309- spring clamping screw, 310- floating limit seat, 311- floating boss, 312- vertical rib;

[0028] 4-positioning assembly, 401-center positioning shaft, 402-center positioning core, 403-center pressure plate, 404-first keyway, 405-second keyway, 406-positioning key;

[0029] 5- Clamping cavity;

[0030] 6-mid-position floating block groove;

[0031] 7-left floating block embedding groove;

[0032] 8-right floating block slot;

[0033] 9-median floating block;

[0034] 10-left floating block;

[0035] 11-Right floating block. DETAILED DESCRIPTION

[0036] The utility model is further described in detail below based on the accompanying drawings and embodiments. The described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0037] like Figure 1 to Figure 3 As shown, the present invention provides a stator core scattered sheet circular matrix transfer jaw mechanism, comprising a four-jaw cylinder 1, four pistons of the four-jaw cylinder 1 are connected to L-shaped jaws 2, and the L-shaped jaws 2 are connected to a floating jaw assembly 3; a positioning assembly 4 is arranged at the axial position corresponding to the bottom of the four-jaw cylinder 1;

[0038] The inner side of each floating clamping jaw assembly 3 and the outer side of the positioning assembly 4 form a circular clamping cavity 5, and the inner diameter of the clamping cavity 5 changes under the synchronous drive of each L-shaped clamping jaw 2, so that when the inner diameter becomes larger, it is convenient to fit the stator core scattered circular matrix, and when the inner diameter becomes smaller, the outer wall of the stator core scattered circular matrix is ​​clamped; at this time, the inner wall of the stator core scattered circular matrix will be tightly attached to the outer wall of the positioning assembly 4.

[0039] Under the action of this mechanism, the stator core sheet circular matrix is ​​clamped inside and outside, and the clamping force acting on the stator core sheet circular matrix is ​​uniform, thereby preventing displacement of the stator core sheets in the stator core sheet circular matrix.

[0040] like Figure 4As shown, the floating jaw assembly 3 in this embodiment includes an arc-shaped support 301, and a plurality of floating block embedding grooves 302 are arranged on the inner wall of the arc-shaped support 301. A floating block 303 is movably embedded in the floating block embedding groove 302, and is longitudinally limited by a pressure plate 304 arranged on the upper and lower sides of the arc-shaped support 301; a transition plate fixing groove 305 is opened on the outer wall of the arc-shaped support 301, and is connected to the L-shaped jaw 2 through a transition plate 306. Under the drive of the piston of the four-jaw cylinder 1, each L-shaped jaw 2 synchronously drives the arc-shaped support 301 connected thereto to move.

[0041] Among them, the floating block embedding groove 302 is T-shaped, and correspondingly, the floating block 303 is T-shaped, including a floating limit seat 310 and a floating boss 311 that are connected to each other. The floating limit seat 310 is embedded in the floating block embedding groove 302, and the floating boss 311 extends out of the floating block embedding groove 302 to act on the outer wall of the stator core scattered circular matrix.

[0042] A spring 307 is provided between the floating limit seat 310 and the inner wall of the floating block slot 302, so that the floating block 303 can have a certain elastic activity space in the floating block slot 302, and can achieve flexible clamping when acting on the outer wall of the stator core scattered circular matrix.

[0043] A spring tightening screw hole 308 is provided on the inner wall of the floating block embedding groove 302, and a spring tightening screw 309 passes through the spring tightening screw hole 308 along the outer side of the arc support 301 and acts on one end of the spring 307 to adjust the tightness of the spring 307. By adjusting the tightness of the spring 307, the floating size of the floating block 303 relative to the floating block embedding groove 302 can be adjusted. The greater the elasticity, the greater the floating.

[0044] like Figure 5 As shown, the curvature of the inner wall of the arc-shaped support 301 is 90°. Under this structure, the four arc-shaped supports 301 are connected end to end to form a circle, thereby forming a closed circular cavity.

[0045] As an optimization of this embodiment, Figure 4 As shown, a vertical rib 312 is provided on the outer end surface of the floating boss 311, through which the vertical rib 312 can achieve point contact with the outer wall of the core disc matrix, thereby achieving a better clamping effect. As an optimization of this solution, the floating block and the vertical rib are integrally formed and are both made of brass.

[0046] As a specific embodiment of the present scheme, in the same arc support 301, there are three floating block grooves 302, including a middle floating block groove 6 arranged at the center position, and a left floating block groove 7 and a right floating block groove 8 arranged on both sides of the middle floating block groove 6; correspondingly, the floating block 303 includes a left floating block 10, a middle floating block 9 and a right floating block 11.

[0047] like Figure 1 to Figure 3 As shown, the positioning assembly 4 in this embodiment includes a center positioning shaft 401 arranged at the axial position corresponding to the bottom of the four-claw cylinder 1, and a center positioning core 402 is sleeved on the center positioning shaft 401 and is limited by a center pressure plate 403.

[0048] Specifically, the center positioning core 402 is used to act on the inner wall of the stator core circular matrix; that is, its outer wall contacts the inner wall of the stator core circular matrix, thereby facilitating the subsequent clamping and tightening of the floating block 303.

[0049] As a structural form in which the center positioning shaft 401 and the center positioning core 402 are connected to each other in this embodiment, a first key groove 404 is provided on the outer wall of the center positioning shaft 401, and a second key groove 405 is provided on the inner wall of the center positioning core 402, and the first key groove 404 and the second key groove 405 are connected by a positioning key 406. This structure can also ensure that the center positioning shaft 401 and the center positioning core 402 will not rotate after being sleeved with each other, thereby ensuring stable operation.

[0050] The above description is only for illustrating the implementation mode of the present utility model and is not intended to limit the present utility model. For those skilled in the art, any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A stator core scattered circular matrix transfer clamp mechanism, characterized in that: It comprises a four-claw cylinder (1), wherein four pistons of the four-claw cylinder (1) are all connected to L-shaped clamping jaws (2), and the L-shaped clamping jaws (2) are connected to a floating clamping jaw assembly (3); a positioning assembly (4) is arranged at an axial position corresponding to the bottom of the four-claw cylinder (1); The inner side of each floating clamping jaw assembly (3) and the outer side of the positioning assembly (4) form a circular clamping cavity (5), and the inner diameter of the clamping cavity (5) changes under the synchronous drive of each L-shaped clamping jaw (2).

2. A stator core scattered circular matrix transfer clamp mechanism according to claim 1, characterized in that: The floating clamping jaw assembly (3) comprises an arc-shaped support (301), the inner wall of which is provided with a plurality of floating block embedding grooves (302), in which floating blocks (303) are movably embedded and longitudinally limited by pressure plates (304) arranged on the upper and lower surfaces of the arc-shaped support (301); a transition plate fixing groove (305) is provided on the outer wall of the arc-shaped support (301), and the arc-shaped support (301) is connected to the L-shaped clamping jaw (2) via a transition plate (306).

3. A stator core scattered circular matrix transfer clamp mechanism according to claim 2, characterized in that: The floating block embedding groove (302) is T-shaped, and correspondingly, the floating block (303) is T-shaped, comprising a floating limit seat (310) and a floating boss (311) connected to each other, the floating limit seat (310) is embedded in the floating block embedding groove (302), and the floating boss (311) extends out of the floating block embedding groove (302).

4. A stator core scattered circular matrix transfer clamp mechanism according to claim 3, characterized in that: A spring (307) is provided between the floating limit seat (310) and the inner wall of the floating block embedding groove (302).

5. A stator core scattered circular matrix transfer clamp mechanism according to claim 4, characterized in that: A spring tightening screw hole (308) is provided on the inner wall of the floating block embedding groove (302), and a spring tightening screw (309) passes through the spring tightening screw hole (308) along the outer side of the arc-shaped support (301) to adjust the tightness of the spring (307).

6. A stator core scattered circular matrix transfer clamp mechanism according to claim 4, characterized in that: The arc angle of the inner wall of the arc-shaped support (301) is 90°.

7. A stator core scattered circular matrix transfer clamp mechanism according to claim 4, characterized in that: A vertical rib (312) is provided on the outer end surface of the floating boss (311).

8. A stator core scattered circular matrix transfer clamp mechanism according to claim 4, characterized in that: In the same arc-shaped support (301), there are three floating block embedding grooves (302), including a middle floating block embedding groove (6) arranged at the center, and a left floating block embedding groove (7) and a right floating block embedding groove (8) arranged on both sides of the middle floating block embedding groove (6); correspondingly, the floating blocks (303) include a left floating block (10), a middle floating block (9) and a right floating block (11).

9. The stator core scattered circular matrix transfer clamp mechanism according to claim 1, characterized in that: The positioning assembly (4) comprises a central positioning shaft (401) arranged at an axial position corresponding to the bottom of the four-claw cylinder (1); a central positioning core (402) is sleeved on the central positioning shaft (401) and is limited by a central pressure plate (403).

10. A stator core scattered circular matrix transfer clamp mechanism according to claim 9, characterized in that: A first key groove (404) is provided on the outer wall of the center positioning shaft (401), and a second key groove (405) is provided on the inner wall of the center positioning core (402); the first key groove (404) and the second key groove (405) are connected via a positioning key (406).

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