Novel floating contact pin mechanism

Abstract

The utility model discloses a novel floating contact pin mechanism, which relates to the technical field of flat wire motor stator manufacturing for new energy automobiles and comprises a quick-change contact pin disc bottom plate, a quick-change contact pin disc positioning plate, a quick-change contact pin disc rotation driving part, a rotation power part and a quick-change contact pin disc. The floating contact pin mechanism provided by the utility model is used for copper wire head twisting in flat wire motor stator production, a plurality of clamping contact pins are synchronously driven to move by using the rotary disk, and each contact pin is compressed and floated by using the belleville spring to ensure that each contact pin can be tightly attached to a copper wire in each groove, so that the occurrence of virtual leaning is effectively prevented, and the production efficiency is improved. Clamping force is applied to the copper wires in the grooves to prevent the copper wires from moving in the axial direction of the iron core during head twisting, and the structure fixes the copper wires and the iron core to guarantee the clamping effect of all the copper wire grooves; and the use of the quick-change contact pin disc solves the problem of quick change of contact pin structures of multi-model flat wire motors on head turning equipment, can realize quick change of the contact pin structures of different products, realizes multiple purposes in one machine, and ensures the compatibility of multiple models.

Description

Technical Field

[0001] The utility model relates to the technical field of flat wire motor stator manufacturing for new energy vehicles, in particular to a novel floating pin mechanism. Background Art

[0002] The copper wire twisting process of the flat wire motor stator is one of the key steps in the assembly process of the drive motor of new energy vehicles. With the country's vigorous promotion of energy conservation and environmental protection, new energy vehicles have developed rapidly. As its core component, the performance of the drive motor directly affects the performance and efficiency of the whole vehicle. In the assembly process of the drive motor, the copper wire twisting process of the stator is crucial, which involves multiple steps such as layering, flaring, and twisting of the copper wire to ensure the performance and reliability of the motor. For the copper wire twisting process of the flat wire motor stator of new energy vehicles, the copper wire and the iron core need to be clamped and fixed, but the traditional stator copper wire twisting process has some limitations: First, when the stator copper wire is twisted, if the fixing force of the copper wire and the iron core is not enough, the copper wire will be displaced relative to the iron core, causing uncontrollable changes in the stator size, and there will be problems with the insulation paper breaking; secondly, there will be a virtual leaning situation, and it is difficult to ensure the clamping effect; thirdly, there are many types of existing flat wire motors, and a set of twisting equipment is required for the twisting of the stator copper wire of each model, and the equipment investment is too large. Utility Model Content

[0003] The purpose of the utility model is to provide a novel floating pin mechanism to solve some limitations of the traditional stator copper wire twisting process proposed in the above background technology: first, when the stator copper wire is twisted, if the fixing force between the copper wire and the iron core is insufficient, the copper wire will be displaced relative to the iron core, causing uncontrollable changes in the stator size, and there will also be problems such as insulation paper breakage; secondly, there will be a virtual leaning situation, making it difficult to ensure the clamping effect; thirdly, there are many types of existing flat wire motors, and a set of twisting equipment is required for the twisting of each model of the stator copper wire, which leads to the problem of excessive equipment investment.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a novel floating pin mechanism, comprising a horizontally arranged quick-change pin disk bottom plate and a quick-change pin disk positioning plate fixed with bolts on its top surface, a quick-change pin disk rotation drive unit is arranged on the top surface of the quick-change pin disk positioning plate and a rotating power unit arranged on the top surface of the quick-change pin disk bottom plate is connected to its outer side, and a quick-change pin disk is positioned and installed on the inner side of the pin disk rotation drive unit; a coaxial large circular hole is provided in the middle of the quick-change pin disk bottom plate and the quick-change pin disk positioning plate; the quick-change pin disk rotation drive unit comprises a quick-change pin disk rotation drive sleeve arranged on the top surface of the quick-change pin disk positioning plate, and two quick-change docking grooves are symmetrically arranged on the inner side of the quick-change pin disk rotation drive sleeve about its center, and a quick-change pin is positioned and arranged through the two quick-change docking grooves Disk; the quick-change pin disk rotation driving sleeve is connected to the rotating power unit through a gear and rack meshing portion on the side close to the rotating power unit; the quick-change pin disk includes a pin mounting outer ring annularly arranged on the quick-change pin disk rotation driving sleeve, a pin mounting base plate is arranged on the inner side of the pin mounting outer ring, a plurality of radially opened and concave pin mounting grooves are evenly arranged on the top surface of the pin mounting base plate, and a clamping pin is installed in each pin mounting groove, each clamping pin is sleeved with a plurality of butterfly springs near its tail end, and a pin toggle rod is arranged at the tail end on the top surface of each clamping pin, a rotating disk is arranged on the inner side of the pin mounting outer ring on the top surface of the pin mounting base plate, and a plurality of spiral grooves are arranged in an annular manner on the rotating disk, and two adjacent pin toggle rods are accommodated in each spiral groove.

[0005] Preferably, the quick-change pin disk rotation drive sleeve is coaxially arranged with the large circular hole of the quick-change pin disk positioning plate.

[0006] Preferably, the rotating power unit includes a power bracket arranged on the bottom plate of the quick-change pin disk, and a reducer is arranged on the top surface of the power bracket and a driving servo motor is connected to the top of the power bracket. The reducer is connected to the rotating drive sleeve of the pin disk through a gear and rack meshing part on the inner side of the power bracket.

[0007] Preferably, each pin installation groove is a convex groove, and the butterfly spring close to the front end of the clamping pin abuts against the corresponding step surface of the pin installation groove.

[0008] Preferably, two square docking joints are arranged on the top surface of the pin mounting outer ring and are symmetrically arranged about the center of the circle. The two square docking joints can be quickly docked and connected with the two quick-change docking grooves respectively.

[0009] Preferably, a roller is sleeved on the outer side of the pin toggle rod.

[0010] Preferably, a plurality of positioning pins are provided on the top surface of the bottom plate of the quick-change pin disk on the inner side of the quick-change pin disk rotation driving sleeve, and the quick-change pin disk is positioned and fixed by the plurality of positioning pins.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The floating pin mechanism provided by the utility model is used for the copper wire twisting in the flat wire motor stator production process. The rotary disk is used to synchronously drive multiple clamping pins to move. At the same time, each pin is compressed and floated by a butterfly spring to ensure that each pin can be tightly attached to the copper wire in each slot, effectively preventing the occurrence of false support. A clamping force is applied to the copper wire in each slot to prevent the copper wire from moving along the axial direction of the iron core when the head is twisted. This structure fixes the copper wire and the iron core to ensure the clamping effect of all copper wire slots.

[0013] The use of the quick-change pin disk of the utility model solves the problem of quick-change function of the pin structure of various types of flat wire motors on the twisting head equipment. The quick docking structure of the pin structure and the drive structure can realize the quick replacement of the pin structures of different products, so that one machine can be used for multiple purposes and the compatibility of multiple models is guaranteed. The quick-change pin disk adopts a composite structure with unified displacement and independent floating and pushing, so that all the pins can effectively push against the copper wire to prevent the displacement of the copper wire and the iron core, and at the same time solves the problem of some pins having virtual support when the pins move to clamp the copper wire, so as to ensure that the copper wire in each slot has clamping force and the clamping effect of all copper wire slots is guaranteed.

[0014] The pin structure is driven by a servo motor. Compared with the traditional pneumatic pin structure on the market, it can accurately set the controllable pin force, make the process parameters controllable and recordable, and change the pin displacement for different products by switching the servo program. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is the axonometric drawing of the structure of the utility model;

[0016] Figure 2 for Figure 1 Top view;

[0017] Figure 3 for Figure 2 Main view;

[0018] Figure 4 for Figure 1 Schematic diagram of removing the turntable;

[0019] In the figure: quick-change pin disk base plate -1, quick-change pin disk positioning plate -2, quick-change pin disk rotation drive unit -3, quick-change pin disk rotation drive sleeve -31, quick-change docking groove -32, gear and rack meshing unit -33, rotation power unit -4, power bracket -41, reducer -42, drive servo motor -43, quick-change pin disk -5, pin mounting outer ring -51, pin mounting base plate -52, pin mounting groove -53, clamping pin -54, butterfly spring -55, pin toggle rod -56, turntable -57, spiral groove -58, square docking joint -59. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the technical solution of the present utility model, the technical solution in the embodiments of the present utility model is clearly and completely described below in conjunction with the accompanying drawings and specific embodiments.

[0021] Please refer to Figure 1-4 , Figure 1 This is the axonometric drawing of the structure of the utility model; Figure 2 for Figure 1 Top view; Figure 3 for Figure 2 Main view; Figure 4 for Figure 1 Schematic diagram of removing the turntable.

[0022] The utility model provides a novel floating pin mechanism, which is used for clamping and fixing the welding end of the flat copper wire installed in the stator of the flat wire motor; it comprises a horizontally arranged quick-change pin disk base plate 1, a quick-change pin disk positioning plate 2 is arranged on the top surface of the quick-change pin disk base plate 1, and a quick-change pin disk rotation drive part 3 is arranged on the top surface of the quick-change pin disk positioning plate 2, and a rotation power part 4 arranged on the top surface of the quick-change pin disk base plate 1 is connected to the outside of the quick-change pin disk 5, and a quick-change pin disk 5 is positioned and installed on the inner side of the pin disk rotation drive part 3.

[0023] A large circular hole that can be sleeved on the outside of the motor stator is provided in the middle of the quick-change pin tray bottom plate 1, and a quick-change pin tray positioning plate 2 is fixedly provided on the top surface thereof by bolts.

[0024] A large circular hole coaxial with and having the same specifications as the quick-change pin disk bottom plate 1 is provided in the middle of the quick-change pin disk positioning plate 2; and a quick-change pin disk rotation driving part 3 is provided on its top surface.

[0025] The quick-change pin disk rotation drive unit 3 includes a quick-change pin disk rotation drive sleeve 31 arranged on the top surface of the quick-change pin disk positioning plate 2, and the quick-change pin disk rotation drive sleeve 31 is coaxially arranged with the large circular hole of the quick-change pin disk positioning plate 2; the inner side of the quick-change pin disk rotation drive sleeve 31 is symmetrically provided with two quick-change docking grooves 32 about its center for quick docking with the quick-change pin disk 5; the quick-change pin disk rotation drive sleeve 31 is connected to the rotation power unit 4 through a gear and rack meshing portion 33 on the side close to the rotation power unit 4.

[0026] The rotating power unit 4 includes a power bracket 41 arranged on the bottom plate 1 of the quick-change pin disk, and a reducer 42 is arranged on the top surface of the power bracket 41. The top of the reducer 42 is connected to a driving servo motor 43. The reducer 42 is connected to a driving gear on the inner side of the power bracket 41, and is connected to the pin disk rotating drive sleeve 31 through a gear and rack meshing portion 33.

[0027] The quick-change pin disk 5 includes a pin installation outer ring 51 annularly arranged on the quick-change pin disk rotation drive sleeve 31, a pin installation bottom plate 52 is arranged on the inner side of the pin installation outer ring 51, and a plurality of radially opened and concave pin installation grooves 53 are evenly arranged on the top surface of the pin installation bottom plate 52, and each pin installation groove 53 is a convex groove, and a clamping pin 54 is installed in each pin installation groove 53, and each clamping pin 54 is sleeved with a plurality of butterfly springs 55 near its tail end, and the butterfly spring 55 near the front end of the clamping pin 54 abuts against the step surface of the corresponding pin installation groove 53, and the compression and floating of the butterfly spring 55 ensures that each clamping pin can be close to the copper wire in each groove, effectively preventing the occurrence of false support, applying clamping force to the copper wire in each groove, and ensuring the clamping effect of all copper wire grooves; a butterfly spring 55 is arranged on the tail end of the top surface of each clamping pin A pin toggle rod 56 is provided, and the clamping pin 54 can be pushed to move axially along the pin mounting groove 53 by controlling the pin toggle rod 56; a turntable 57 is provided on the inner side of the pin mounting outer ring 51 on the top surface of the pin mounting bottom plate 52, and a plurality of spiral grooves 58 are arranged in a ring on the turntable 57, and each spiral groove 58 accommodates two adjacent pin toggle rods 56, and a plurality of clamping pins 54 can be synchronously driven to move by the rotation of the turntable 57; two square docking joints 59 symmetrically arranged about the center of the circle are provided on the top surface of the pin mounting outer ring 51, and the two square docking joints 59 can be quickly docked and connected with two quick-change docking grooves 32 respectively, and the rotational torque can be transmitted between the quick-change pin disk 5 and the quick-change pin disk rotation drive sleeve 31 through the square docking joints 59, while facilitating the separation of the docking joint and the docking groove during quick change.

[0028] The outer side of the pin-moving rod 56 is sleeved with a roller to reduce the resistance when the rotating disk 57 drives the pin-moving rod 56 to move.

[0029] In addition, a plurality of positioning pins are provided on the top surface of the quick-change pin disk base plate 1 on the inner side of the quick-change pin disk rotation drive sleeve 31, and the quick-change pin disk 5 is positioned and fixed by the plurality of positioning pins to prevent the pin mounting base plate 52 and the clamping pin 54 from rotating during the process of clamping the copper wire, which would cause problems in clamping the copper wire.

[0030] The floating pin mechanism provided by the utility model is used for the copper wire twisting in the flat wire motor stator production process. The rotary disk is used to synchronously drive multiple clamping pins to move. At the same time, each pin is compressed and floated by a butterfly spring to ensure that each pin can be tightly attached to the copper wire in each slot, effectively preventing the occurrence of false support. A clamping force is applied to the copper wire in each slot to prevent the copper wire from moving along the axial direction of the iron core when the head is twisted. This structure fixes the copper wire and the iron core to ensure the clamping effect of all copper wire slots.

[0031] The use of the quick-change pin disk of the utility model solves the problem of quick-change function of the pin structure of various types of flat wire motors on the twisting head equipment. The quick docking structure of the pin structure and the drive structure can realize the quick replacement of the pin structures of different products, so that one machine can be used for multiple purposes and the compatibility of multiple models is guaranteed. The quick-change pin disk adopts a composite structure with unified displacement and independent floating and pushing, so that all the pins can effectively push against the copper wire to prevent the displacement of the copper wire and the iron core, and at the same time solves the problem of some pins having virtual support when the pins move to clamp the copper wire, so as to ensure that the copper wire in each slot has clamping force and the clamping effect of all copper wire slots is guaranteed.

[0032] The pin structure is driven by a servo motor. Compared with the traditional pneumatic pin structure on the market, it can accurately set the controllable pin force, make the process parameters controllable and recordable, and change the pin displacement for different products by switching the servo program.

[0033] Although the embodiments of the utility model have been shown and described, it is obvious that the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, it can be understood by ordinary technicians in this field that all other embodiments obtained by making various changes, modifications, substitutions and variations to these embodiments without departing from the principle and spirit of the utility model and without making creative work, all belong to the scope of protection of the utility model.

Claims

1. A new type of floating pin mechanism, characterized by: The invention comprises a quick-change pin disk base plate (1) arranged horizontally and a quick-change pin disk positioning plate (2) is bolted on the top surface thereof, a quick-change pin disk rotation driving part (3) is arranged on the top surface of the quick-change pin disk positioning plate (2) and a rotation power part (4) arranged on the top surface of the quick-change pin disk base plate (1) is connected to the outer side thereof, and a quick-change pin disk (5) is positioned and installed on the inner side of the quick-change pin disk rotation driving part (3); the quick-change pin disk base plate (1) and the quick-change pin disk positioning plate (2) are provided with a coaxial large circular hole in the middle; the quick-change pin disk rotation driving part (3) comprises a quick-change pin disk rotation driving sleeve (31) arranged on the top surface of the quick-change pin disk positioning plate (2); the inner side of the quick-change pin disk rotation driving sleeve (31) is symmetrically provided with two quick-change docking grooves (32) about the center of the circle, and the quick-change pin disk (5) is positioned and arranged through the two quick-change docking grooves (32); the quick-change pin disk rotation driving sleeve (31) is located near the rotating power part (4) The quick-change pin disk (5) is connected to the rotating power unit (4) through a gear and rack meshing portion (33); the quick-change pin disk (5) comprises a pin installation outer ring (51) arranged in an annular manner on the quick-change pin disk rotation drive sleeve (31); a pin installation bottom plate (52) is arranged on the inner side of the pin installation outer ring (51); a plurality of radially opened and concave pin installation grooves (53) are evenly arranged on the top surface of the pin installation bottom plate (52); and a clamping pin is installed in each pin installation groove (53). A plurality of butterfly springs (55) are sleeved on each clamping pin (54) near its tail end, and a pin toggle lever (56) is arranged at the tail end on the top surface of each clamping pin. A rotating disk (57) is arranged on the inner side of the pin mounting outer ring (51) on the top surface of the pin mounting base plate (52), and a plurality of spiral grooves (58) are arranged in an annular manner on the rotating disk (57), and each spiral groove (58) accommodates two adjacent pin toggle levers (56).

2. The novel floating pin mechanism according to claim 1 is characterized in that: The quick-change pin disk rotation drive sleeve (31) is coaxially arranged with the large circular hole of the quick-change pin disk positioning plate (2).

3. The novel floating pin mechanism according to claim 2 is characterized in that: The rotary power unit (4) comprises a power bracket (41) arranged on the bottom plate (1) of the quick-change pin disk, and a reducer (42) is arranged on the top surface of the power bracket (41) and a driving servo motor (43) is connected to the top of the power bracket. The reducer (42) is connected to the quick-change pin disk rotary drive sleeve (31) via a gear and rack meshing portion (33) on the inner side of the power bracket (41).

4. The novel floating pin mechanism according to claim 3 is characterized in that: Each pin installation groove (53) is a convex groove, and the butterfly spring (55) close to the front end of the clamping pin (54) abuts against the step surface of the corresponding pin installation groove (53).

5. The novel floating pin mechanism according to claim 4 is characterized in that: Two square butt joints (59) are arranged symmetrically about the center of the circle on the top surface of the pin mounting outer ring (51), and the two square butt joints (59) can be quickly butt-connected with the two quick-change butt joint grooves (32) respectively.

6. The novel floating pin mechanism according to claim 5 is characterized in that: The outer side of the pin-moving rod (56) is sleeved with a roller.

7. The novel floating pin mechanism according to any one of claims 1 to 6, characterized in that: A plurality of positioning pins are provided on the top surface of the quick-change pin disk bottom plate (1) on the inner side of the quick-change pin disk rotation drive sleeve (31), and the quick-change pin disk (5) is positioned and fixed by the plurality of positioning pins.

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