Generator coil tool with contraction and expansion functions

Abstract

The utility model discloses a generator coil tool with contraction and expansion functions. The generator coil tool is characterized by comprising a main shaft assembly, a contraction and expansion shaft assembly and a tail top assembly, the contracting and expanding shaft assembly is used for clamping a coil framework and comprises a fixed block and two movable blocks, the fixed block is fixed to the end of the main shaft assembly, and the two movable blocks are arranged on the two sides of the fixed block in a matched mode respectively and can slide in the axial direction of the fixed block; the movable block can move in the radial direction of the fixed block while sliding in the axial direction so as to be matched with the fixed block to form a tensioning position and a contracting position. The tail jacking assembly is located at the end, back on to the main shaft assembly, of the shrinkage and expansion shaft assembly and can move in the axial direction of the shrinkage and expansion shaft assembly, and after the tail jacking assembly moves towards the shrinkage and expansion shaft assembly, the movable block can be pushed from the shrinkage position to the expansion position. According to the utility model, the convenience of taking down the wound coil is obviously improved, so that the production efficiency is improved, and the labor intensity is reduced.

Description

Technical Field

[0001] The utility model relates to the field of winding tools, in particular to a generator coil tool with shrinking and expanding functions. Background Art

[0002] The coil of the automobile generator is wound on the coil frame through the winding tool. During the winding process, the surface of the motor coil needs to be wound into an arc shape to avoid grounding when the upper and lower claws are pressed and installed, so the winding tension is relatively large. In this case, the coil shrinks after winding, causing the coil to be stuck on the tooling and difficult to remove, so further improvement is needed. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a generator coil tooling with a shrinking and expanding function, which significantly improves the convenience of removing the coil after winding is completed, thereby improving production efficiency and reducing labor intensity.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A generator coil tooling with a shrinking and expanding function, characterized by comprising a main shaft assembly, a shrinking and expanding shaft assembly and a tail top assembly;

[0006] The shrinking and expanding shaft assembly is used to clamp the coil skeleton and includes a fixed block and two movable blocks. The fixed block is fixed at the end position of the main shaft assembly. The two movable blocks are respectively matched on both sides of the fixed block and can slide in the axial direction of the fixed block. The movable block can slide in the axial direction and move in the radial direction of the fixed block to cooperate with the fixed block to form a tightening position and a contracting position.

[0007] The tail top assembly is located on one end of the contraction and expansion shaft assembly facing away from the main shaft assembly and can move in the axial direction of the contraction and expansion shaft assembly. When the tail top assembly moves toward the contraction and expansion shaft assembly, it can push the movable block from the contraction position to the tensioning position.

[0008] Preferably, the fixed block has guide blocks extending axially on both sides, the guide blocks have waist-shaped guide holes extending axially along the fixed block, the waist-shaped guide holes gradually move away from the center hole of the fixed block from the rear end to the front end, the inner side wall of the movable block has guide grooves cooperating with the guide blocks, and the movable block is provided with a guide shaft passing through the waist-shaped guide holes.

[0009] Preferably, the fixed block is a fan-shaped structure and has a first arc surface, the outer side wall of the movable block is a second arc surface, and the first arc surface cooperates with the two second arc surfaces to form a circumferential surface of the contraction and expansion shaft assembly.

[0010] Preferably, the spindle assembly includes a transmission shaft and a wire clamp sleeved on the transmission shaft, and the fixing block is fixed at the front end position of the transmission shaft.

[0011] Preferably, the wire clamp comprises a tooling seat body, a wire clamping block, a wire pressing block and a reset spring;

[0012] The wire clamping block is fixed on the tooling seat body;

[0013] The wire pressing block is hinged on the tooling seat body, and two ends of the wire pressing block can rotate to form a wire pressing part and a driving part.

[0014] The wire pressing part corresponds to the wire clamping block, and the return spring is arranged between the tooling seat body and the driving part to press the wire pressing part tightly on the wire clamping block.

[0015] Preferably, the fixing block is inserted into the front end of the transmission shaft through the center hole and is locked by bolts.

[0016] Preferably, the tail top assembly includes a tail top seat and a synchronization pin located at the front end of the tail top seat, and the fixed block has a socket for inserting the synchronization pin.

[0017] The advantages of the utility model are as follows: after the motor coil is wound, the tail top assembly moves backward, and when the two movable blocks in the shrinking and expanding shaft assembly move toward the tail top direction, they can shrink in the radial direction under the action of the guide shaft and the waist-shaped guide hole, so that the generator coil can be easily removed, thereby improving production efficiency, reducing labor intensity, and facilitating loading and unloading of operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of a generator coil tooling with shrinking and expanding functions provided in this embodiment;

[0019] Figure 2 An exploded view of a generator coil tooling with a shrinking and expanding function provided in this embodiment;

[0020] Figure 3 A partial exploded view of the expansion and contraction shaft assembly provided in this embodiment. DETAILED DESCRIPTION

[0021] Combination Figures 1 to 3 The generator coil tooling with shrinking and expanding functions of the utility model is further explained.

[0022] A generator coil tooling with a shrinking and expanding function is characterized in that it comprises a main shaft assembly 1, a shrinking and expanding shaft assembly 4 and a tail top assembly 3.

[0023] The expansion and contraction shaft assembly 4 is used for coaxial clamping of the coil skeleton 2 and includes a fixed block 42 and two movable blocks 41. The fixed block 42 has a center hole 421 and is fixed to the end position of the main shaft assembly 1 through the center hole 421. The two movable blocks 41 are respectively matched on both sides of the fixed block 42 and can slide in the axial direction of the fixed block 42. The movable block 41 can move in the radial direction of the fixed block 42 while sliding in the axial direction to cooperate with the fixed block 42 to form a tensioning position and a contraction position.

[0024] The tail top assembly 3 is located on the end of the contraction and expansion shaft assembly 4 facing away from the main shaft assembly 1, and can move in the axial direction of the contraction and expansion shaft assembly 4. When the tail top assembly 3 moves toward the contraction and expansion shaft assembly 4, the movable block 41 can be pushed from the contraction position to the tensioning position to clamp the coil skeleton 2 on the contraction and expansion shaft assembly 4.

[0025] The fixed block 42 has guide blocks 422 extending in the axial direction on both sides, and the guide blocks 422 have waist-shaped guide holes 423 extending in the axial direction of the fixed block 42. At the same time, the two end holes of the waist-shaped guide holes 423 pass through the left and right side walls of the guide block 422. The waist-shaped guide holes 423 gradually move away from the center hole 421 of the fixed block 42 from the rear end 4231 to the front end 4232. The end of the fixed block 42 facing the spindle assembly 1 is the front end, and the end facing the tail top assembly 3 is the rear end. The inner side wall of the movable block 41 has a guide groove 411 that matches the guide block 422, and the movable block 41 is provided with a guide shaft that passes through the guide groove 411 and the waist-shaped guide hole 423, and the guide shaft is perpendicular to the axis of the fixed block 42. Under this structure, when the movable block 41 slides axially forward on the fixed block 42, under the guidance of the waist-shaped guide hole 423 and the guide shaft, the movable block 41 can simultaneously move radially away from the center hole 421 of the fixed block 42, thereby achieving an effect of expanding the diameter; when the movable block 41 slides axially backward on the fixed block 42, under the guidance of the waist-shaped guide hole 423 and the guide shaft, the movable block 41 can radially approach the center hole 421 of the fixed block 42, thereby achieving an effect of shrinking the diameter.

[0026] The fixed block 42 is a fan-shaped structure and has a first arc surface 424. The guide block 422 is located on the planes on both sides of the fixed block 42. The outer wall of the movable block 41 is a second arc surface 412. The first arc surface 424 cooperates with the two second arc surfaces 412 to form the circumferential surface of the expansion and contraction shaft assembly 4 for the coil skeleton 2 to be inserted into.

[0027] The spindle assembly 1 includes a transmission shaft 12 and a wire clamp 11 mounted on the transmission shaft 12. The fixing block 42 is fixed to the front end of the transmission shaft 12. It should be noted that the end of the spindle assembly 1 facing the expansion and contraction shaft assembly 4 is the front end, and the end facing away from the expansion and contraction shaft assembly 4 is the rear end.

[0028] The wire clamp 11 includes a tooling seat body 111 , a wire clamping block 113 , a wire pressing block 112 and a return spring 114 .

[0029] The tooling seat body 111 has a center hole and is sleeved on the transmission shaft 12 through the center hole. A key block 6 is provided between the center hole of the tooling seat body 111 and the transmission shaft 12 to limit the tooling seat body 111 from rotating relative to the transmission shaft 12; a bolt is screwed into the outer wall of the tooling seat body 111 so that the end of the bolt is pressed against the transmission shaft 12 to lock the tooling seat body 111 and the transmission shaft 12.

[0030] A mounting groove 1111 is provided at the rear end of the tooling seat body 111, and the clamping block 113 is fixed in the mounting groove 1111 at the rear end of the tooling seat body 111; the wire pressing block 112 is hinged in the mounting groove of the tooling seat body 111 through a pin shaft near the middle part, and the two ends of the wire pressing block 112 can rotate to form a wire pressing part 1122 and a driving part 1121; the wire pressing part 1122 corresponds to the clamping block 113 to form a clamping channel; the reset spring The spring 114 is arranged between the tooling seat body 111 and the driving part 1121, that is, one end of the reset spring 114 is fixed on the tooling seat body 111, and the other end is fixed on the driving part 1121, providing a thrust for the driving part 1121, so that the wire pressing part 1122 is pressed against the wire clamping block 113, so that the clamping channel generates a clamping force; when in use, a cylinder is also connected to the driving part 1121, and the cylinder pushes the driving part 1121 to open the clamping channel for the thread head to enter.

[0031] In order to improve the stability of wire clamping, the wire clamping block 113 and the wire pressing portion 1122 are both provided with teeth.

[0032] The fixing block 42 is inserted into the front end of the transmission shaft 12 through the center hole. A threaded hole 7 is provided on the end wall of the front end of the transmission shaft 12. The corresponding bolt is inserted into the center hole of the fixing block 42 and screwed into the threaded hole at the same time, so that the fixing block 42 can be locked at the front end position of the transmission shaft 12.

[0033] The tail top assembly 3 includes a tail top seat 32 and two synchronization pins 31 fixed to the front end of the tail top seat 32. The fixed block 42 has a socket 425 for inserting the synchronization pins 31, so that the tail top assembly 3 rotates synchronously with the main shaft assembly 1 and the expansion and contraction shaft assembly 4.

[0034] When in use, the coil skeleton 2 is mounted on the contraction and expansion shaft assembly 4, and the tail top assembly 3 is pushed toward the contraction and expansion shaft assembly 4 by a displacement driving assembly such as a cylinder, and the two movable blocks 41 are pushed forward to expand the contraction and expansion shaft assembly 4, and the coil skeleton 2 is clamped, and the head of the wire to be wound is passed around the coil skeleton 2 and clamped on the wire clamp 11, and the main shaft assembly 1 is driven to rotate by a rotating assembly such as a motor to perform the winding operation;

[0035] After the winding is completed, the cylinder drives the tail top assembly 3 to move backward, and then moves the coil backward. The coil drives the movable block 41 to move backward synchronously. During the backward movement of the movable block 41, it moves toward the center direction of the fixed block 42 to achieve a diameter reduction effect. Therefore, the coil can be easily removed, and the new coil frame can also be easily installed, which significantly improves the convenience of operation.

[0036] Unless otherwise specified, in the present utility model, if there are terms such as "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicating orientation or position relationship, they are based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the orientation or position relationship in the present utility model are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood in conjunction with the drawings and according to specific circumstances.

[0037] Unless otherwise specified and limited, in the present invention, the terms "disposed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A generator coil tooling with shrinking and expanding function, characterized by: It includes a main shaft assembly, a contraction and expansion shaft assembly and a tail top assembly; The shrinking and expanding shaft assembly is used to clamp the coil skeleton and includes a fixed block and two movable blocks. The fixed block is fixed at the end position of the main shaft assembly. The two movable blocks are respectively matched on both sides of the fixed block and can slide in the axial direction of the fixed block. The movable block can slide in the axial direction and move in the radial direction of the fixed block to cooperate with the fixed block to form a tightening position and a contracting position. The tail top assembly is located on one end of the contraction and expansion shaft assembly facing away from the main shaft assembly and can move in the axial direction of the contraction and expansion shaft assembly. When the tail top assembly moves toward the contraction and expansion shaft assembly, it can push the movable block from the contraction position to the tensioning position.

2. The generator coil tooling with shrinking and expanding function according to claim 1 is characterized in that: The fixed block has guide blocks extending axially on both sides, and the guide blocks have waist-shaped guide holes extending axially along the fixed block, and the waist-shaped guide holes gradually move away from the center hole of the fixed block from the rear end to the front end, and the movable block has guide grooves cooperating with the guide blocks on the inner side wall, and the movable block is provided with a guide shaft passing through the waist-shaped guide holes.

3. The generator coil tooling with shrinking and expanding function according to claim 1 is characterized in that: The fixed block is a fan-shaped structure and has a first arc surface. The outer side wall of the movable block is a second arc surface. The first arc surface cooperates with the two second arc surfaces to form a circumferential surface of the contraction and expansion shaft assembly.

4. The generator coil tooling with shrinking and expanding function according to claim 1 is characterized in that: The spindle assembly comprises a transmission shaft and a wire clamp sleeved on the transmission shaft, and the fixing block is fixed on the front end of the transmission shaft.

5. The generator coil tooling with shrinking and expanding function according to claim 4 is characterized in that: The wire clamp comprises a tooling seat body, a wire clamping block, a wire pressing block and a reset spring; The wire clamping block is fixed on the tooling seat body; The wire pressing block is hinged on the tooling seat body, and the two ends of the wire pressing block can rotate to form a wire pressing part and a driving part; The wire pressing part corresponds to the wire clamping block, and the return spring is arranged between the tooling seat body and the driving part to press the wire pressing part tightly on the wire clamping block.

6. The generator coil tooling with shrinking and expanding function according to claim 4 is characterized in that: The fixing block is inserted into the front end of the transmission shaft through the central hole and is locked by bolts.

7. The generator coil tooling with shrinking and expanding function according to claim 1 is characterized in that: The tail top assembly comprises a tail top seat and a synchronization pin located at the front end of the tail top seat, and the fixed block is provided with a socket for inserting the synchronization pin.

Images