WO2023005915A1

WO2023005915A1 - Stator block coil shaping device

Info

Publication number: WO2023005915A1
Application number: PCT/CN2022/107888
Authority: WO
Inventors: 魏中华; 朱振学; 单科迪; 汤杭东
Original assignee: 浙江联宜电机有限公司
Priority date: 2021-07-29
Filing date: 2022-07-26
Publication date: 2023-02-02
Also published as: DE112022002915T5; CN113612357B; CN113612357A

Abstract

The present invention relates to a coil shaping device for a motor stator, and in particular, to a stator block coil shaping device. The stator block coil shaping device is characterized by comprising a positioning block, a movable shaping block, and a fixed shaping block. Both the positioning block and the movable shaping block can translate along a linear direction, and the movement direction of the positioning block is parallel to the movement direction of the movable shaping block; the fixed shaping block is located on the movement direction side of the movable shaping block; the end surface of the movable shaping block adjacent to the fixed shaping block is a first shaping surface, the end surface of the fixed shaping block adjacent to the movable shaping block is a second shaping surface, and both the first shaping surface and the second shaping surface are inclined surfaces each forming an included angle with the linear direction; and the positioning block is formed with a positioning recess for positioning a stator block. The present invention has the advantages that individual stator blocks can be shaped, subsequent connection between two adjacent stator blocks is facilitated, the recess fullness rate can be ensured, and an insulating paper can be folded.

Description

Stator block coil shaping device

technical field

The invention relates to a coil shaping device for a motor stator, in particular to a stator block coil shaping device.

Background technique

After the winding of the coil on the stator core is completed, the stator coil needs to be shaped to avoid contact between the stator coil and components such as the rotor or the motor end cover, and to ensure the fullness of the slot.

Conventional stator coil shaping devices are used for coil shaping of conventional stators, that is, for shaping the coils on the iron core formed by stacking a number of annular punches, and cannot be used for shaping stator blocks. For example, the application number is 201821184231.2 China Patent.

After finishing the winding of the coil on the stator block as shown in Figure 1, it is necessary to manually tap the side of the stator block to shape the coil on the stator block, and clean the insulating paper in the winding groove of the stator block. Folding, to avoid the situation that there is no contact between the sides of the two stator blocks after the two stator blocks are connected, so as to facilitate the subsequent assembly of several stator blocks. However, manual coil shaping with a small hammer has the disadvantages of low efficiency, large damage to the surface of the enameled wire, and easy damage to the plastic coil skeleton.

technical problem

The object of the present invention is to provide a stator block coil shaping device capable of shaping stator blocks and facilitating the connection between subsequent stator blocks.

technical solution

In order to achieve the above object, the present invention adopts the following technical scheme: a stator block coil shaping device, including a positioning block, a movable shaping block and a fixed shaping block, the positioning block and the movable shaping block can be translated along a straight line, and The moving direction of the block is set parallel to the moving direction of the movable shaping block, the fixed shaping block is located on the side of the moving direction of the moving shaping block, and the end face of the moving shaping block adjacent to the fixed shaping block is used to connect with the upper coil side of the stator block The first shaping surface in contact, the end face of the fixed shaping block adjacent to the movable shaping block is the second shaping surface used to contact the opposite side of the coil on the stator block, and the first shaping surface and the second shaping surface are both An inclined surface forming an angle with the straight line direction, the positioning block is located at the open end of the angle formed by the first shaping surface and the second shaping surface, and the positioning block is formed with a positioning groove for positioning the stator block, The positioning groove is formed with two groove surfaces for contacting with different surfaces of the stator block, and one groove surface is for contact with the side of the stator block.

When the coil shaping of the stator block is required, put the radially outer end of the stator block into the positioning groove so that the radially inner end of the stator block is located between the movable shaping block and the fixed shaping block, and the stator block The coil is not in contact with the first shaping surface and the second shaping surface, and then the movable shaping block is moved. The first shaping surface of the movable shaping block will first contact with one side of the coil on the stator block, and then the movable shaping block drives the stator block Moving to the side of the fixed shaping block, since the outer end of the stator block is located in the positioning groove, the positioning block will also move accordingly, and finally the other side of the coil on the stator block contacts the second shaping surface of the fixed shaping block to complete the stator Coil shaping of pieces. The device of the invention can reshape a single stator block, facilitate the subsequent connection between two adjacent stator blocks, and can ensure the fullness of the slot and fold the insulating paper. Among them, the positioning block is driven, the positioning block is not active, nor is it fixed with the movable shaping block, which can facilitate the positioning and fixing of the stator block, and can prevent the stator block from deviating from the set position during shaping. When it is used with a driver, it can also enable the driver to achieve shaping with a small force, and a lower-cost driver can be selected. Wherein, buffer pads can be provided on the first shaping surface and the second shaping surface to prevent the coil from being over-pressed and damage the enameled wire.

As a preference, the groove surface of the positioning groove used to contact the side of the stator block is provided with a relief groove for the connection structure of the stator block; the relief groove is along the thickness direction of the positioning block through the positioning block. By setting the relief slot, the stator block is prevented from moving along its own radial direction, the movement of the stator block can be avoided, and the coil frame on the stator block can be prevented from being crushed. Wherein, the relief groove runs through the positioning block, which facilitates the processing of the positioning block, and the stator pieces can enter the positioning groove from different directions, which facilitates the use of the device of the present invention.

Preferably, the positioning groove of the positioning block has three groove surfaces that are in contact with different surfaces of the stator block, and the groove surfaces include two first groove surfaces that are in contact with the opposite sides of the stator block, and also include For the second groove surface in contact with the arc surface of the stator block, the two first groove surfaces are symmetrically arranged, and the angle formed by the second groove surface is the same as the angle formed by the arc surface of the stator block . The above settings are used to improve the positioning effect between the positioning block and the stator block.

Preferably, the groove surface of the positioning groove for contacting the side of the stator block is arranged parallel to the first shaping surface or the second shaping surface; the first shaping surface and the second shaping surface are symmetrically arranged. The above setting enables the first shaping surface and the second shaping surface to be parallel to one of the opposite sides of the stator block, so as to achieve better shaping of the coil.

Preferably, the movable shaping block and the fixed shaping block are set up and down oppositely, and the positioning block is located on the side of the movable shaping block and the fixed shaping block. It occupies less space above the workbench, and can reduce the force between the positioning block and other components, facilitating the driven movement of the positioning block.

Preferably, the positioning block is provided with a fixed groove, and a magnet is arranged in the fixed groove; a limiting block is provided on the side of the positioning block away from the movable shaping block and the fixed shaping block, and the limiting block is in contact with the positioning block And close the fixing groove. The magnet is arranged to attract the stator block made of metal material, so that the stator block is positioned at the positioning block. Due to the fan-shaped structure of the stator block, when the stator block is stressed, the stator block has a tendency to move to the vertical force direction. By setting the limit block to avoid the offset of the positioning block, to ensure the stability of the device of the present invention Use effect and service life. Wherein the limiting block is also used to close the fixing groove, and the opening of the fixing groove is arranged at the position of the positioning block adjacent to the limiting block, which can reduce the contact area between the positioning block and the limiting block.

Preferably, the positioning block is equipped with a return spring, and the return spring is located on the moving direction side of the positioning block. The reset of the positioning block is realized by setting the return spring, which is convenient for the next use of the present invention.

Preferably, the movable shaping block is connected to the output end of the driver, and the movable shaping block moves to the side of the fixed shaping block under the action of the driver. By setting the driver, the labor intensity of the staff can be reduced, and the fixed stroke of the movable shaping block can be set through the driver to ensure the shaping effect.

As a preference, one end of the movable shaping block is fixed to the connecting rod, and the other end of the connecting rod extends into the pressing plate, the connecting rod is arranged coaxially or parallel to the linear direction, and the pressing plate is fixed to the output end of the driver. The pressure plate has a step groove, a buffer spring is provided in the thick section of the step groove, and the connecting rod includes a slip-fitting section that is always located in the thin section of the step groove and is always located in the thick section of the step groove and is offset against the buffer spring contact segment. By setting the buffer spring, the movable shaping block can move up and down. When positioning and fixing the stator block, the movable shaping block can be used for pre-positioning to compress the insulating paper on one side of the stator block to facilitate subsequent coil shaping and insulation cover folding. At the same time, the buffer spring is also used to prevent the coil from being over-pressed, so as to avoid damage to the enameled wire.

Preferably, the ends of the first shaping surface or the second shaping surface close to and away from the positioning block are formed with notches that give way to the coil frame of the stator block. Notches are provided at both ends of the movable shaping block and the end faces of the fixed shaping block to avoid damage to the coils of the stator block after the movable shaping block moves.

Beneficial effect

The invention has the advantages of being able to reshape a single stator block, facilitating the subsequent connection between two adjacent stator blocks, ensuring the fullness of the slot, and folding the insulating paper.

Description of drawings

FIG. 1 is a structural schematic diagram of a stator block.

Fig. 2 is a structural schematic diagram of the present invention.

Fig. 3 is a structural schematic diagram of the movable shaping block, the fixed shaping block and the positioning block of the present invention.

Fig. 4 is a structural schematic diagram of the movable shaping block and the fixed shaping block of the present invention.

Fig. 5 is a schematic structural diagram of the positioning block of the present invention.

Fig. 6 is a structural schematic diagram of the movable shaping block and the connecting rod of the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION

The present invention will be further described below according to the accompanying drawings and specific embodiments.

The device of the present invention is used for shaping the stator block 1 shown in FIG. 1 . The opposite sides of the stator block 1 are respectively provided with connection structures for connecting and fixing two adjacent stator blocks. The connection structure includes a protrusion 11 and a matching groove 12. The opposite sides of the stator block 1 respectively have a side surface 13 , and the radially outer end surface of the stator block 1 is an arc surface 14 .

As shown in Fig. 2 to Fig. 5, this embodiment discloses a stator block coil shaping device, including a positioning block 2, a movable shaping block 3 and a fixed shaping block 4, the fixed shaping block 4 is supported and fixed on the upper side of the bottom plate 9, Base plate 9 top is also provided with support 91, and the top of support 91 is provided with driver 8, and movable shaping block 3 is arranged on fixed shaping block 4 top, and positioning block 2 is arranged on the left side of movable shaping block 3 and fixed shaping block 4, and movable shaping block 3. The upper part is connected and fixed with the pressing plate 81, and the pressing plate 81 is fixed at the lower end of the output end of the driver 8. Wherein, the driver 8 is an air cylinder, and both the positioning block 2 and the movable shaping block 3 can translate along the vertical linear direction, and the moving direction of the positioning block 2 is set in parallel with the moving direction of the moving shaping block 3 .

The lower end surface of the movable shaping block 3 is the first shaping surface 31, the upper end surface of the fixed shaping block 4 is the second shaping surface 41, and both the first shaping surface 31 and the second shaping surface 41 form an included angle with the vertical straight line direction. inclined plane. A fixed block 92 is provided at the narrowing end of the angle formed by the first shaping surface 31 and the second shaping surface 41, and the positioning block 2 is located at the open end of the angle formed by the first shaping surface 31 and the second shaping surface 41. place. Wherein, the fixed block 92 sticks to the right side of the movable shaping block 3 and the right side of the fixed shaping block 4, so as to limit the movement of the movable shaping block 3 and the fixed shaping block 4 to the right. Wherein, the first shaping surface 31 and the second shaping surface 41 are vertically symmetrically arranged. Wherein, both the left and right ends of the first shaping surface 31 and the left and right ends of the second shaping surface 41 are formed with notches 30 that give way to the coil skeleton (not shown in the figure) on the stator block 1 .

The positioning block 2 is formed with a positioning groove for positioning the stator block 1. The positioning groove has three groove surfaces that are in contact with different surfaces of the stator block 1 respectively. The first groove surface 21, the groove surface also includes the second groove surface 22 for contacting the arc surface 13 of the stator block 1, the two first groove surfaces 21 are symmetrically arranged up and down, and the angle formed by the second groove surface 22 is The size of the angle formed by the arc surface 14 of the stator block 1 is the same. Wherein, the plane of the first groove surface on the upper side is arranged parallel to the plane of the first shaping surface 31 , and the plane of the first groove surface on the lower side is arranged parallel to the plane of the second shaping surface 41 .

The first groove surface 21 is provided with a relief groove 211 for the protrusion 11 of the connection structure of the stator block 1 to make way for, and the relief groove 211 penetrates the positioning block 1 along the thickness direction of the positioning block 1 . Wherein, the left end surface of the positioning block 2 is concave to form two fixing grooves 23, and the fixing grooves 23 are used to accommodate magnets (not shown in the figure).

The positioning block 2 is also provided with three guide holes 24 penetrating up and down. The guide hole 24 is pierced with a guide rod 25, and the guide rod 25 is covered with a return spring (not shown in the figure). The return spring is located at the lower side of the positioning block 2 . The left side of the positioning block 2 is provided with a limiting block 93 , the right end surface of the limiting block 93 is in contact with the left end surface of the positioning block 2 , and the limiting block 93 is fixed to the bottom plate 9 . Wherein, the limiting block 93 has a fixing portion 94 extending below the positioning block 2, the fixing portion 94 is used for positioning and fixing with the lower end of the guide rod 25 and supporting the lower end of the return spring, and the fixing portion 94 is also used for limiting the fixed shaping block 4 to the left move.

As shown in Figure 6, the movable shaping block 3 is fixed to the lower end of the connecting rod 6, the upper end of the connecting rod extends into the pressing plate 81, the connecting rod is coaxial or parallel to the straight line, the pressing plate 81 has a stepped groove, and the width of the upper section of the stepped groove is The thick section 82, the lower section of the step groove is thinner, and the thick section 82 of the step groove is provided with a buffer spring (not shown in the figure), and the connecting rod includes the sliding matching section 61 always located in the thin section of the step groove and the The contact section 62 in the thick section 82 of the step groove and against the buffer spring. Wherein, the depth of the thick section 82 of the stepped groove is greater than the axial length of the contact section 61 . Wherein, the fixing of the pressure plate 81 and the output end of the driver 8 can be realized in various ways, the step groove of the pressure plate 81 can be penetrated up and down, and the step groove is closed by the output end of the driver 8 or the connecting piece between the pressure plate 81 and the output end ; The step groove can also be set to be closed at the upper end. Wherein, the connecting rod 6 can be fixed with the movable shaping block 3 in various ways such as screw fit, tight fit or welding.

When the coil shaping of the stator block is required, put the radially outer end of the stator block into the positioning groove of the positioning block, so that the radially inner end of the stator block is located between the movable shaping block and the fixed shaping block, and the stator block The coil of the block is in contact with the first shaping surface, and not in contact with the second shaping surface; by manually lifting the movable shaping block so that the radial inner end of the stator block is located between the movable shaping block and the fixed shaping block, by The movable shaping block realizes pre-positioning and pre-compression.

Then start the driver, the movable shaping block moves down under the action of the driver, and then the movable shaping block drives the stator block to move downward. Since the outer end of the stator block is located in the positioning groove, the positioning block will also move downward accordingly, and finally the stator The coil of the block is in contact with the second shaping surface, and moves downward as the stator block continues to complete the coil shaping of the stator block.

Claims

A stator splicing coil shaping device is characterized in that it includes a positioning block, a movable shaping block and a fixed shaping block, both of the positioning block and the movable shaping block can translate along a straight line, and the moving direction of the positioning block is the same as that of the movable shaping block. The moving direction is arranged in parallel, the fixed shaping block is located on the side of the moving direction of the movable shaping block, and the end surface of the movable shaping block adjacent to the fixed shaping block is the first shaping surface for contacting with the coil side of the stator block. The end face of the fixed shaping block adjacent to the movable shaping block is the second shaping surface used to contact the opposite side of the coil on the stator block, and the first shaping surface and the second shaping surface are both angles with the straight line direction. The inclined surface, the positioning block is located at the open end of the angle formed by the first shaping surface and the second shaping surface, the positioning block is formed with a positioning groove for positioning the stator block, and the positioning groove is formed with two There are slot faces for contact with different faces of the stator block, and there is a slot face for contact with the side of the stator block.
The stator block coil shaping device according to claim 1, characterized in that the groove surface of the positioning groove used to contact the side of the stator block is provided with a relief for the connection structure of the stator block. Position slot; the relief slot runs through the positioning block along the thickness direction of the positioning block.
The stator block coil shaping device according to claim 1, characterized in that the positioning groove of the positioning block has three groove surfaces that are respectively in contact with different surfaces of the stator block, and the groove surfaces include two that are in contact with the stator block. The first groove surface that is in contact with the opposite side surfaces of the block also includes a second groove surface that is used to contact the arc surface of the stator block. The two first groove surfaces are symmetrically arranged, and the angle formed by the second groove surface The size is the same as the angle formed by the arc surfaces of the stator blocks.
The stator block coil shaping device according to claim 1 or 3, characterized in that the groove surface of the positioning groove used to contact the side of the stator block is arranged in parallel with the first shaping surface or the second shaping surface; The first shaping surface and the second shaping surface are arranged symmetrically.
The coil shaping device according to claim 1, characterized in that the movable shaping block and the fixed shaping block are set opposite to each other up and down, and the positioning block is located on the side of the movable shaping block and the fixed shaping block.
The stator block coil shaping device according to claim 1, characterized in that the positioning block is provided with a fixed groove, and a magnet is arranged in the fixed groove; the side of the positioning block away from the movable shaping block and the fixed shaping block A limiting block is provided, and the limiting block is in contact with the positioning block and closes the fixing groove.
The stator block coil shaping device according to claim 1, characterized in that the positioning block is equipped with a return spring, and the return spring is located on the moving direction side of the positioning block.
The coil shaping device according to claim 1, characterized in that the movable shaping block is connected to the output end of the driver, and the movable shaping block moves to the side of the fixed shaping block under the action of the driver.
The stator block coil shaping device according to claim 8, characterized in that the movable shaping block is fixed to one end of the connecting rod, the other end of the connecting rod extends into the pressing plate, and the connecting rod is coaxial with the linear direction Or set in parallel, the pressure plate is fixed to the output end of the driver, the pressure plate has a stepped groove, a buffer spring is arranged in the thick section of the stepped groove, and the connecting rod includes a slipping section that is always located in the thin section of the stepped groove And the contact section that is always located in the thick section of the step groove and is against the buffer spring.
The stator block coil shaping device according to claim 1, characterized in that one end of the first shaping surface or the second shaping surface close to and far from the positioning block is formed with a gap for the coil skeleton of the stator block.