Mini PIN cutting head welding tool

Abstract

A Mini PIN cutting head welding tool comprises a mounting table, a first through hole is formed in the middle of the top of the mounting table, a retaining ring is arranged in the first through hole, a rotating disc is rotationally mounted in the retaining ring, a limiting disc is arranged at the top of the rotating disc, fixing discs are arranged at the top of the limiting disc at intervals, and extending parts are arranged at the bottoms of the fixing discs. A plurality of sets of symmetrical first kidney-shaped holes are formed in the periphery of the top of the rotating disc at equal intervals, a plurality of second kidney-shaped holes are formed in the periphery of the top of the limiting disc at equal intervals, a plurality of first positioning holes are formed in the periphery of the side, close to the circle center, of the top of the limiting disc at equal intervals, and a plurality of second positioning holes are formed in the periphery of the outer side of the top of the fixing disc. Limiting devices are arranged between the fixing disc and the limiting disc in the circumferential direction of the axis of the third through hole at equal intervals, and each limiting device is composed of a plurality of first limiting plates and a plurality of second limiting plates which are alternately arranged. By means of the rotating disc and the limiting device, the welding end can be fixed on the same plane through the thinner first limiting plate and the thinner second limiting plate.

Description

Technical Field

[0001] This utility model relates to the field of welding technology, and in particular to a MiniPIN cutting head welding fixture. Background Technology

[0002] Flat wire motors are currently the mainstream motor winding form. Compared with round wire, flat wire is beneficial for improving the slot fill factor. Generally, the slot fill factor of a round wire motor is around 50%, while that of a flat wire motor can reach over 70%. The increased slot fill factor means that, with the stator slot space remaining unchanged, more copper wire can be filled, allowing for a larger current to pass through, generating a stronger magnetic field, and thus increasing power density.

[0003] Regarding the end height of flat copper wire windings, Mini flat wire motor technology, based on hairpin windings, achieves a significant reduction in the height of the welding end and crown end of the winding by optimizing processes such as winding forming, welding, insertion, and twisting. The welding end height is reduced by approximately 25%, and the crown end height by approximately 20%, resulting in a reduction of approximately 0.1 kg of copper used in the winding. In addition to the reduction in envelope size and copper usage, various data have also shown significant improvements. However, due to the reduction in welding end height, existing auxiliary welding fixtures mostly rely on two layers of limiting plates to fix the flat wire cut end, and the thickness cannot meet the requirements of Mini-pin windings. Utility Model Content

[0004] The purpose of this invention is to provide a MiniPIN cutting head welding fixture to solve the problems existing in the prior art.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0006] A MiniPIN cutting and soldering fixture includes a mounting platform. A first through-hole is located at the center of the top of the mounting platform. A retaining ring is disposed within the first through-hole. A turntable is rotatably mounted within the retaining ring. A second through-hole is located at the center of the top of the turntable. A limiting plate is located at the top of the turntable. A third through-hole is located at the center of the top of the limiting plate, and the third through-hole is coaxial with the second through-hole. Fixed plates are spaced apart at the top of the limiting plate. A fourth through-hole is located at the center of the top of the fixed plate, and the fourth through-hole is coaxial with the third through-hole. An extension is located at the bottom of the fixed plate.

[0007] The top periphery of the turntable is provided with multiple sets of symmetrical first waist-shaped holes at equal intervals, and the top periphery of the limiting plate is provided with multiple second waist-shaped holes at equal intervals. The positions of the second waist-shaped holes correspond one-to-one with the positions of the first waist-shaped holes. The top periphery of the limiting plate near the center is provided with multiple first positioning holes at equal intervals, and the top outer periphery of the fixing plate is provided with multiple second positioning holes. The positions of the first positioning holes correspond one-to-one with the positions of the second positioning holes.

[0008] A limiting device is provided at equal intervals along the circumferential direction of the axis of the third through hole between the fixed plate and the limiting plate. The limiting device consists of a plurality of alternating first limiting plates and a plurality of second limiting plates. A plurality of limiting grooves are provided at the end of the first limiting plate and the second limiting plate near the third through hole. The limiting grooves are used to fix the flat wire cut-off head. A third positioning hole is provided at the end of the first limiting plate and the second limiting plate near the third through hole. The third positioning hole corresponds one-to-one with the first positioning hole. A fourth positioning hole is provided at the end of the first limiting plate and the second limiting plate away from the third through hole. The fourth positioning hole corresponds one-to-one with the first waist-shaped hole. A positioning pin is inserted into each of the plurality of third positioning holes and the plurality of fourth positioning holes.

[0009] A transmission mechanism is provided on the front side of the mounting platform. The rear side of the transmission mechanism is connected to the front protrusion of the turntable. The transmission mechanism is used to rotate the turntable by a certain angle.

[0010] By adopting the above technical solution, when the MiniPIN cut-off end needs to be limited for welding, the welding fixtures commonly used for hairpin windings have certain limitations. Specifically, the method of limiting with two upper and lower limiting plates cannot limit the welding end when the height drops by a quarter. However, with the cooperation of a limiting plate, multiple first limiting plates, and multiple second limiting plates, the height can be limited to half of the usual height. At this time, the limiting plate no longer cooperates with another limiting plate, but only serves as a support and facilitates the movement of the positioning pin between the positioning hole and the waist hole, thereby controlling whether the first and second limiting plates move forward or backward. At this time, the welding end is fixed by the first and second limiting plates on the same horizontal plane. These two limiting plates are of different lengths, one long and one short, and are fixed by the concave grooves at the same position between the two limiting plates. When the two limiting plates are brought together and the distance between them (i.e., the distance relative to the center of the first through hole) changes, they will abut against the welding end from the front and back of the groove, thus fixing it in place. The positioning pin in the first waist-shaped hole cooperates with the second waist-shaped hole at the top, so that when the turntable rotates, it drives the positioning pin to rotate along one of the symmetrically arranged first waist-shaped holes. The second waist-shaped holes are equally spaced and centripetally arranged, so the positioning pin will only move back and forth within them. The symmetrical arrangement of the waist-shaped holes also means that the two limiting plates move in different directions during rotation in the same direction, thus causing the distance between the first and second limiting plates to change. This method greatly reduces the thickness required for limiting, and achieves what previously required two limiting plates with multiple sets of first and second limiting plates circumferentially arranged around the center of the first through hole, enabling the fixing of new MiniPIN windings.

[0011] In a further embodiment, the retaining ring is composed of a left retaining ring and a right retaining ring, and the rear end of the left retaining ring is fixedly connected to the rear end of the right retaining ring through a mounting part.

[0012] By adopting the above technical solution, the retaining ring can ensure that the turntable rotates in the first through hole, thereby improving the working efficiency of the turntable, extending the working life of the turntable, and preventing the turntable from sticking to the mounting table during rotation, which can effectively reduce friction and improve transmission efficiency.

[0013] In a further embodiment, the transmission mechanism includes a receiving box, a first sliding member, and a second sliding member. The top of the receiving box is provided with a receiving groove, and the front middle position of the receiving groove is provided with a mounting hole. A mounting seat is bolted and fixed in the mounting hole. The middle position of the mounting seat is provided with a mounting hole, and a screw is provided in the mounting hole. The front end of the screw is provided with a fixing part, and the rear end of the screw is provided with a snap-fit ​​part. The front side of the first sliding member is provided with a first snap-fit ​​groove, and the first sliding member is snap-fitted and fixed to the screw. The rear side of the first sliding member is provided with a second snap-fit ​​groove. The left and right sides of the second snap-fit ​​groove are both inclined to the right. The second sliding member is slidably installed in the second snap-fit ​​groove. The top of the second sliding member is provided with a third snap-fit ​​groove, and the third snap-fit ​​groove is provided with multiple first threaded holes. The third snap-fit ​​groove is bolted and fixed to the protrusion of the turntable.

[0014] By adopting the above technical solution, the transmission mechanism enables the control turntable to rotate within a certain angle. Since the first and second limiting plates are essentially just rotating to make the first limiting plate move forward and the second limiting plate move backward under the cooperation of the positioning pin and the waist-shaped hole, the end to be welded in the groove is fixed. The irregular groove on the rear side of the first sliding member and the shape of the second sliding member and the irregular groove can convert the linear motion of the screw moving back and forth into rotational motion, thereby achieving tightening and loosening. In addition, the front end of the screw is also provided with a fixed end that facilitates the automatic tightening of the mechanical sleeve, realizing fully automatic processing.

[0015] In a further embodiment, the first sliding member has a plurality of acute-angled chamfered structures in its first snap-fit ​​groove, and the second sliding member has a plurality of acute-angled chamfered structures on its front side.

[0016] By adopting the above technical solution, the blunted acute angle structure can help the first and second locking slots slide more smoothly during displacement.

[0017] In a further embodiment, the top periphery of the mounting platform is provided with a plurality of second threaded holes at equal intervals, and a fixing ring is bolted to the top of the mounting platform.

[0018] By adopting the above technical solution, the fixing ring can prevent the positioning pin in the positioning hole from moving up and down, and it can also prevent the first limiting plate and the second limiting plate from moving up and down during rotation, thus more effectively protecting the normal operation of the device.

[0019] In a further embodiment, fixing devices are fixedly installed on both the left and right top ends of the mounting platform.

[0020] By adopting the above technical solution, the fixing device can help the mounting platform be stably installed on any platform.

[0021] In summary, this utility model has the following beneficial effects:

[0022] 1. By setting up a fixed plate, a limiting plate, and a limiting device, it is possible to achieve a limit at half the usual height through the cooperation of the limiting plate, multiple first limiting plates, and multiple second limiting plates. At this time, the limiting plate no longer cooperates with another limiting plate, but only serves as a support and facilitates the movement of the positioning pin between the positioning hole and the waist hole, thereby controlling whether the first and second limiting plates move forward or backward. At this time, the fixed welding end is already against the first and second limiting plates on the same horizontal plane. These two limiting plates are of different lengths, one long and one short. Through the grooves on both sides of the rear end of the two limiting plates, when the two limiting plates are brought together and the distance between them (i.e., the distance relative to the center of the first through hole) changes, it will move from the groove... The two plates are positioned one in front and one behind the welding end to fix it in place. The positioning pin in the first waist-shaped hole and the second waist-shaped hole at the top cooperate to make the positioning pin rotate along one of the symmetrically arranged first waist-shaped holes when the turntable rotates. The second waist-shaped holes are equally spaced and centripetally arranged, so the positioning pin can only move back and forth within them. The symmetrical arrangement of the waist-shaped holes also makes the two limiting plates move in different directions when rotating in the same direction, thus causing the first limiting plate and the second limiting plate to change in the distance between them. This method greatly reduces the thickness required for limiting. It achieves what previously required two limiting plates with multiple sets of first and second limiting plates arranged circumferentially around the center of the first through hole, thus enabling the new MiniPIN winding to be fixed.

[0023] 2. Through the transmission mechanism, the first limiting plate moves forward and the second limiting plate moves backward under the cooperation of the positioning pin and the waist-shaped hole, thereby fixing the end to be welded in the groove. The irregular groove on the rear side of the first sliding member and the shape of the second sliding member and the irregular groove can convert the linear motion of the screw's forward and backward movement into rotational motion, thereby achieving tightening and loosening. In addition, the front end of the screw is also provided with a fixed end for convenient automatic tightening of the mechanical sleeve, achieving the effect of fully automatic processing.

[0024] 3. By setting the fixing ring, the positioning pin in the positioning hole can be prevented from moving up and down. On the other hand, it can also prevent the first limit plate and the second limit plate from moving up and down during rotation, which can more effectively protect the normal operation of the device. Attached Figure Description

[0025] Figure 1 This is an overall schematic diagram of a MiniPIN cutting head welding fixture;

[0026] Figure 2 This is a schematic diagram of the structure of a turntable used in a MiniPIN cutting head welding fixture;

[0027] Figure 3 This is a schematic diagram of a MiniPIN cutting head welding fixture used to illustrate a limiting plate.

[0028] Figure 4 This is a schematic diagram of a MiniPIN cutting head welding fixture used to illustrate the transmission mechanism.

[0029] Figure 5 This is a structural diagram of a MiniPIN cutting head welding fixture used to illustrate the fixed plate.

[0030] In the diagram, 1 is the mounting platform; 8 is the fixing device; 3 is the turntable; 4 is the limit plate; 5 is the fixing plate; 6 is the transmission mechanism; and 7 is the fixing ring. Detailed Implementation

[0031] The present invention will be further described in detail below with reference to the accompanying drawings.

[0032] Identical parts are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to the attached figures. Figure 1 In this specification, the terms "bottom surface" and "top surface," "inner" and "outer" refer to the direction toward or away from the geometry of a specific component. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this specification, "a plurality of" means two or more, unless otherwise explicitly and specifically defined by the direction of the center.

[0033] Example 1:

[0034] like Figures 1-5As shown, the device includes a mounting platform 1. Multiple second threaded holes are evenly spaced around the top periphery of the mounting platform 1. A retaining ring 7 is bolted to the top of the mounting platform 1. Fixing devices 8 are fixedly installed on the left and right top ends of the mounting platform 1. A first through hole is located in the middle of the top of the mounting platform 1. A retaining ring is installed inside the first through hole. A turntable 3 is rotatably installed inside the retaining ring. The retaining ring consists of a left retaining ring and a right retaining ring. The rear end of the left retaining ring is fixedly connected to the rear end of the right retaining ring via a mounting part. The turntable 3 has a second through hole at the top center, a limiting plate 4 at the top, a third through hole at the top center of the limiting plate 4 (coaxial with the second through hole), a fixing plate 5 at a distance from the top of the limiting plate 4, a fourth through hole at the top center of the fixing plate 5 (coaxial with the third through hole), an extension at the bottom of the fixing plate 5, and multiple sets of symmetrical first waist-shaped holes at equal intervals around the top periphery of the turntable 3, each set consisting of two first waist-shaped holes. Formed in a figure-eight shape, the top periphery of the limiting plate 4 is provided with multiple second waist-shaped holes at equal intervals, the positions of the second waist-shaped holes corresponding one-to-one with the positions of the first waist-shaped holes. The top periphery of the limiting plate 4 near the center is provided with multiple first positioning holes at equal intervals. The outer periphery of the top of the fixing plate 5 is provided with multiple second positioning holes, the positions of the first positioning holes corresponding one-to-one with the positions of the second positioning holes. A limiting device is provided at equal intervals along the axis of the third through hole between the fixing plate 5 and the limiting plate 4. The limiting device consists of multiple alternating first limiting plates and multiple second limiting plates. The system consists of two limiting plates. Both the first and second limiting plates have multiple limiting grooves at their ends near the third through hole. These grooves are used to fix the flat wire cutter head. Each of the first and second limiting plates also has a third positioning hole at its end near the third through hole, with each third positioning hole corresponding to a first positioning hole. Each of the first and second limiting plates also has a fourth positioning hole at its end away from the third through hole, with each fourth positioning hole corresponding to a first waist-shaped hole. Positioning pins are inserted into each of the multiple third and fourth positioning holes. The first and second limiting plates are provided with multiple limiting grooves at the end of each limiting plate near the first through hole. The number of these limiting grooves is consistent and corresponding. The limiting grooves are used to prevent the welding end to be welded. After the winding is placed, the turntable 3 rotates and moves the first and second limiting plates forward and backward respectively. Since half of the limiting groove for accommodating the welding end is composed of the limiting groove on the first limiting plate and the other half is composed of the limiting groove on the second limiting plate, when these two move in different directions, they will directly fix the welding end, which can effectively deal with the lower welding end of the new winding.

[0035] like Figures 1-5As shown, a transmission mechanism 6 is provided on the front side of the mounting platform 1. The rear side of the transmission mechanism 6 is connected to the front protrusion of the turntable 3. The transmission mechanism 6 is used to rotate the turntable 3 by a certain angle. The transmission mechanism 6 includes a receiving box, a first sliding member, and a second sliding member. A receiving groove is provided on the top of the receiving box. A mounting hole is provided at the middle position of the front side of the receiving groove. A mounting seat is bolted and fixed in the mounting hole. A mounting hole is provided at the middle position of the mounting seat. A screw is provided in the mounting hole. A fixing part is provided at the front end of the screw. A snap-fit ​​part is provided at the rear end of the screw. A first snap-fit ​​groove is provided on the front side of the first sliding member. The first sliding member is snap-fitted and fixed to the screw. A second snap-fit ​​groove is provided on the rear side of the first sliding member. The left and right sides of the second snap-fit ​​groove are both inclined to the right. The second sliding member is slidably mounted on the second snap-fit ​​groove. Inside the groove, the top of the second sliding member is provided with a third snap-fit ​​groove, and the third snap-fit ​​groove is provided with multiple first threaded holes. The third snap-fit ​​groove is bolted and fixed to the protrusion of the turntable 3. The first snap-fit ​​groove of the first sliding member is provided with multiple acute-angled blunt structures, and the front side of the second sliding member is provided with multiple acute-angled blunt structures. Through the transmission mechanism 6, the turntable 3 can move within a small range. The screw and the mounting seat on the receiving box allow the first sliding member to move back and forth within the receiving box. Due to the irregular groove that is tilted to the right inside the first sliding member, and the second sliding member whose shape is completely consistent with the irregular groove, when the first sliding member is pushed forward, the second sliding member will inevitably move to the right along the irregular groove on the rear side of the first sliding member, thereby driving the extension of the turntable 3 bolted and fixed to the top of the second sliding member to rotate to the right, thereby achieving the clamping of the first limiting plate and the second limiting plate.

[0036] In the embodiments disclosed in this utility model, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments disclosed in this utility model according to the specific circumstances.

[0037] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A MiniPIN head cutting welding tooling comprising a mounting table (1), characterized in that: The first through hole is arranged in the middle of the top of the mounting table (1), a retaining ring is arranged in the first through hole, a rotating disc (3) is rotatably arranged in the retaining ring, a second through hole is arranged in the middle of the top of the rotating disc (3), a limiting disc (4) is arranged on the top of the rotating disc (3), a third through hole is arranged in the middle of the top of the limiting disc (4) and coaxially arranged with the second through hole, a fixed disc (5) is arranged on the top of the limiting disc (4) at intervals, a fourth through hole is arranged in the middle of the top of the fixed disc (5) and coaxially arranged with the third through hole, and an extension part is arranged on the bottom of the fixed disc (5); A plurality of groups of symmetrical first waist-shaped holes are arranged on the top of the rotating disc (3) at intervals, a plurality of second waist-shaped holes are arranged on the top of the limiting disc (4) at intervals, the positions of the second waist-shaped holes correspond to the positions of the first waist-shaped holes one by one, a plurality of first positioning holes are arranged on the top of the limiting disc (4) at intervals on the side close to the center, a plurality of second positioning holes are arranged on the top of the fixed disc (5) on the outer side at intervals, and the positions of the first positioning holes correspond to the positions of the second positioning holes one by one; A limiting device is arranged between the fixed disc (5) and the limiting disc (4) at intervals along the axis of the third through hole, the limiting device is composed of a plurality of first limiting plates and a plurality of second limiting plates arranged alternately, a plurality of limiting grooves are arranged on one end of the first limiting plate and the second limiting plate close to the third through hole, the limiting grooves are used for fixing flat wire cut-offs, a third positioning hole is arranged on one end of the first limiting plate and the second limiting plate close to the third through hole, the third positioning hole corresponds to the first positioning hole one by one, a fourth positioning hole is arranged on one end of the first limiting plate and the second limiting plate away from the third through hole, the fourth positioning hole corresponds to the first waist-shaped hole one by one, and a positioning pin is arranged in the plurality of third positioning holes and the plurality of fourth positioning holes; A transmission mechanism (6) is arranged on the front side of the mounting table (1), the rear side of the transmission mechanism (6) is in transmission connection with the front side protruding part of the rotating disc (3), and the transmission mechanism (6) is used for rotating the rotating disc (3) by a certain angle.

2. The MiniPIN head cutting welding tool according to claim 1, wherein: The retaining ring is composed of a left retaining ring and a right retaining ring, and one end of the rear side of the left retaining ring is fixedly connected with one end of the rear side of the right retaining ring through a mounting part.

3. The MiniPIN head cutting welding tool according to claim 1, wherein: The transmission mechanism (6) comprises a containing box, a first sliding piece and a second sliding piece, the top of the containing box is provided with a containing groove, the middle position of the front side of the containing groove is provided with a mounting hole, the mounting hole is fixedly provided with a mounting seat through bolting, the middle position of the mounting seat is provided with a mounting hole, the mounting hole is provided with a screw rod, the front end of the screw rod is provided with a fixed part, the rear end of the screw rod is provided with a clamping part, the front side of the first sliding piece is provided with a first clamping groove, the first sliding piece is fixedly connected with the screw rod through clamping, the rear side of the first sliding piece is provided with a second clamping groove, the left side wall and the right side wall of the second clamping groove are both provided with an inclination to the right side, the second sliding piece is slidingly installed in the second clamping groove, the top of the second sliding piece is provided with a third clamping groove, a plurality of first threaded holes are arranged in the third clamping groove, and the third clamping groove is fixedly connected with the convex part of the rotating disc (3) through bolting.

4. The MiniPIN head cutting welding tool according to claim 3, wherein: A plurality of acute angle obtuse structures are arranged in the first clamping groove of the first sliding piece, and a plurality of acute angle obtuse structures are arranged on the front side of the second sliding piece.

5. The Mini-PIN cutting head welding tool of claim 1, wherein: A plurality of second threaded holes are arranged on the top periphery of the mounting table (1) at equal intervals, and the top of the mounting table (1) is fixedly connected with a fixed ring (7) through bolting.

6. The MiniPIN head cutting welding tool according to claim 1, wherein: The left top end and the right top end of the mounting table (1) are both fixedly connected with a fixing device (8).

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