CN210677290U

CN210677290U - Stator spot welding module and corresponding stator spot welding machine

Info

Publication number: CN210677290U
Application number: CN201921251841.4U
Authority: CN
Inventors: 傅勇
Original assignee: Zhangyou Technology Shenzhen Co ltd
Current assignee: Zhangyou Technology Shenzhen Co ltd
Priority date: 2019-08-02
Filing date: 2019-08-02
Publication date: 2020-06-05
Anticipated expiration: 2029-08-02

Abstract

The utility model provides a stator spot welding module and a corresponding stator spot welding machine, wherein the stator spot welding machine comprises a conveying line body, a positioning mould, a servo indexing mechanism, a pressurizing mechanism and a feeding mechanism; wherein the positioning die slides and sets up on the transfer line body, be provided with the constant head tank that is used for the location to place the stator on the positioning die, servo indexing mechanism is located the top of transfer line body, be used for being connected with the stator in order to drive the rotation of stator according to setting for the stroke, loading system sets up in the top of transfer line body and is located one side of servo indexing mechanism, be used for carrying out the pressure welding to the line ear on the stator, feeding mechanism is located the below of transfer line body, a stator for promoting in positioning die and the positioning die rises in order to be connected with servo indexing mechanism, thereby carry out the pressure welding to a plurality of line ears of stator week by loading system, and then realize automatic transport and the welding to the stator, the welding is stable and effectual, and the production efficiency is improved.

Description

Stator spot welding module and corresponding stator spot welding machine

Technical Field

The utility model relates to a stator spot welding equipment field, in particular to stator spot welding module and corresponding stator spot welder.

Background

The stator of the motor is wound with a coil, the stator wire lug is injection-molded on the stator plastic end cover, poor conduction between the coil and the stator wire lug can cause abnormal motor power and reduced service life, and therefore good conduction between the coil and the wire lug must be ensured in the processing process of the stator. In the industry, a coil is wound on a lug, the lug is deformed and welded on a stator by pressurizing and heating the lug, and meanwhile, a coil varnish is gasified and extruded at high temperature, so that the permanent connection and conduction between the coil and the lug are realized. Among the prior art, mainly weld the solidus operation by the manual work, fix the stator through simple and easy frock clamp, weld it again by hand, not only intensity of labour is big, and the cost of labor is high, welds unstably moreover, and the welding effect is poor, and production efficiency is low.

Therefore, it is desirable to provide a stator spot welding module and a corresponding stator spot welding machine to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model provides a stator spot welding module and corresponding stator spot welder, it is through placing the stator on positioning die, positioning die carries on the transfer chain body, feeding mechanism will carry and rise to pairing with servo indexing mechanism to positioning die and stator propelling movement on setting for the position, servo indexing mechanism can drive the stator after pairing and rotate, and then make loading system can set for the line ear of position on the stator and carry out the pressure welding, fix the stator through simple and easy frock clamp among the solution prior art, it welds to it again by hand, not only intensity of labour is big, the cost of labor is high, and the welding is unstable, welding effect is poor, the problem that production efficiency is low.

In order to solve the technical problem, the utility model adopts the technical scheme that: a stator spot welding module for pressure welding a lug on a stator, so that the lug compresses an enameled wire and removes a paint skin on the enameled wire at a part compressed by the lug, the stator spot welding module comprises:

the positioning die is provided with a positioning groove for positioning and placing a stator, a matching groove is formed in the inner wall of the positioning groove, and a matching part corresponding to the matching groove is arranged on the periphery of the stator;

the servo indexing mechanism is positioned above the positioning die and is used for being connected with the stator to drive the stator to rotate according to a set stroke;

the pressurizing mechanism is positioned above the positioning die and on one side of the servo indexing mechanism and is used for pressurizing and welding lugs on the stator; and

and the feeding mechanism is positioned below the positioning die and used for pushing the positioning die and the stator in the positioning die to ascend so as to be matched with the servo indexing mechanism, so that the pressurizing mechanism performs pressure welding on the plurality of wire lugs on the peripheral side of the stator.

In the utility model, the feeding mechanism comprises a driving module, a feeding shaft and a feeding base;

one end of the feeding shaft is connected with the driving module, the other end of the feeding shaft is connected with the feeding base so as to drive the feeding base to ascend towards the servo indexing mechanism through the driving module, and a magnet block and a positioning column are arranged on the feeding base;

and a magnetic part corresponding to the magnet block and a positioning hole corresponding to the positioning column are arranged on the bottom surface of the positioning die close to the feeding mechanism.

The feeding mechanism further comprises a feeding bottom plate, a pressure seat, a pressure bearing, a positioning bottom plate, a sliding block assembly, a cylinder fixing block, a positioning cylinder and a positioning block;

the feeding bottom plate is connected with the sliding part of the driving module, the pressure seat is arranged on the feeding bottom plate, one end of the feeding shaft is rotatably connected to the pressure seat through the pressure bearing, and one end of the feeding shaft, which is close to the pressure seat, is connected with a positioning ring;

the positioning bottom plate is connected to one side of the pressure seat, the positioning cylinder is connected to the positioning bottom plate through the cylinder fixing block, the positioning block is used for being in contact with the positioning ring to limit the rotation of the feeding shaft, the positioning block is connected to the positioning bottom plate through the sliding block assembly in a sliding mode, the positioning block is connected with the telescopic rod of the positioning cylinder to drive the positioning block to slide, and therefore the positioning block is in contact with or separated from the positioning ring.

Further, the pressure seat is arranged on the feeding bottom plate in a sliding mode through a sliding rail assembly, and the sliding track of the pressure seat is consistent with the extending direction of the feeding shaft;

the feeding mechanism further comprises a first elastic piece, a pressure adjusting plate and a baffle, wherein the pressure adjusting plate is arranged at one end, far away from the pressure seat, of the positioning die, the first elastic piece is arranged between the pressure seat and the pressure adjusting plate, the direction of the elastic force of the first elastic piece is consistent with the sliding track of the pressure seat, and the baffle is arranged at one end, close to the positioning die, of the pressure seat and used for limiting sliding of the pressure seat.

Furthermore, the feeding mechanism also comprises an adjusting toothed rod and an adjusting screw cap;

the adjustment tooth pole runs through and threaded connection is in on the pressure adjustment board, the adjustment tooth pole is close to the one end of first elastic component is connected with the adjustment nut, the other end is for being used for revolving the regulation end of adjustment tooth pole, first elastic component sets up pressure seat with between the adjustment nut be provided with on the pressure seat and be used for the location connection the connecting hole of first elastic component.

The utility model also comprises a stator spot welding machine using the stator spot welding machine, which also comprises a base box and a conveying line body, wherein the top of the base box is provided with a box cover, one side or a plurality of sides of the box cover are provided with sliding doors, and the conveying line body penetrates through the box cover from the outside;

the positioning die is arranged on the conveying line body in a sliding mode, and the servo indexing mechanism and the pressurizing mechanism are located in the box cover.

The conveying line body comprises a length section, a width section, a first air cylinder and a second air cylinder;

two the same end of length section passes through the width section is connected, every the one end of length section all is provided with first cylinder, first cylinder is used for promoting positioning die on the length section removes, every the one end of width section all is provided with the second cylinder, the second cylinder is used for promoting positioning die on the width section removes, one the length section runs through the case cover, another length section and two the width section is located the case cover outside.

Further, the length section comprises a first sliding chute, the width section comprises a second sliding chute, and the positioning mold comprises a sliding plate and a positioning main body part which is detachably positioned and connected to the sliding plate;

the sliding plate comprises first sliding contact surfaces on two opposite sides and second sliding contact surfaces on the other two opposite sides, when the positioning die is positioned on the length section, the first sliding contact surfaces are in sliding contact with the inner side surfaces of the first sliding grooves, and the second sliding contact surfaces are in sliding contact with the inner side surfaces of the second sliding grooves;

be provided with on the slide and be used for the location to connect the location of location main part leads to the groove be provided with on the inner wall that the groove was led to in the location and be used for supporting the support boss of location main part, the groove is led to in the location still be used for with feeding mechanism's rising or decline route form keep away the position, make feeding mechanism can pass the groove is led to in the location in order to promote the location main part rises to and make when descending the location main part location is connected the inslot is led in the location and by the support boss supports.

In the utility model, the pressurizing mechanism comprises a copper rod and a tungsten rod;

the servo indexing mechanism comprises a rotating shaft, a positioning part, a driving part, a connecting plate, a welding tungsten piece, a welding copper ring and a tungsten piece fixing seat;

the driving part is arranged on the connecting plate, the extending direction of the rotating shaft is consistent with the lifting direction of the feeding mechanism, one end of the rotating shaft is in transmission connection with the driving part, the other end of the rotating shaft is connected with the positioning part, and the positioning part is used for being in positioning contact with the inner side wall of the stator;

the tungsten piece fixing base is connected the rotation axis is close to the one end of location portion, the welding tungsten piece passes through the fixed setting on the tungsten piece fixing base of tungsten piece fixed block detachable, welding copper ring detachable is fixed to be set up on the tungsten piece fixing base, welding copper ring be used for with the bar copper contact is electrically conductive, the welding tungsten piece be used for with the bar tungsten contact is electrically conductive, just the lug removes extremely the welding tungsten piece with between the bar tungsten to carry out the pressurization heating welding.

The utility model discloses in, feeding mechanism is fixed to be set up on first support frame, servo indexing mechanism sets up on the second support frame, first support frame with the second support frame is connected respectively on PMKD's two sides, is provided with the first spread groove that is used for the location to connect first support frame in PMKD's one side, is provided with the second spread groove that is used for the location to connect the second support frame on the another side.

The utility model discloses compare in prior art, its beneficial effect is: the utility model discloses a stator spot welder can be through placing the stator on positioning die, positioning die carries on the transfer chain body, feeding mechanism will carry positioning die and stator propelling movement on setting for the position and rise to mate with servo indexing mechanism, servo indexing mechanism drives the stator of mating and rotates, and then make the loading mechanism can carry out the pressure welding to the lug of setting for the position on the stator, can realize automatic transport and welding to the stator, have automatic positioning, automatic drawing of patterns, the circulating water cooling function, the welding is stable and effectual, and the intensity of labour is reduced, and the production efficiency is improved, increases economic benefits;

the feeding base is fixedly connected with the positioning die through magnetic attraction and positioning of the positioning columns, the positioning rings are arranged on the feeding shaft, and the positioning blocks are arranged on the feeding mechanism in a sliding mode, so that the positioning blocks are in contact with the positioning rings to enable the stator to be kept static and not to rotate in the process that the feeding mechanism pushes the stator to rise;

in addition, the pressure seat is arranged on the feeding bottom plate in a sliding mode through the sliding rail assembly, the first elastic piece is arranged between the pressure seat and the pressure adjusting plate, the stator and the servo indexing mechanism can be elastically matched, the matching is stable, and the rotation and the welding are accurate.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments are briefly introduced below, and the drawings in the following description are only corresponding drawings of some embodiments of the present invention.

Fig. 1 is a schematic structural view of a preferred embodiment of the stator spot welder of the present invention.

Fig. 2 is an explosion structure diagram of the stator spot welding machine of the present invention.

Fig. 3 is a plan view of the conveyor line body of the stator spot welder of the present invention.

Fig. 4 is the pair structure schematic diagram of the positioning die and the stator of the stator spot welding machine of the present invention.

Fig. 5 is a schematic structural view of a servo indexing mechanism of the stator spot welding machine of the present invention.

Fig. 6 is a schematic structural view of a pressurizing mechanism of the stator spot welder of the present invention.

Fig. 7 is a schematic structural view of a feeding mechanism of the stator spot welding machine of the present invention.

Fig. 8 is an exploded schematic view of the servo indexing mechanism and the feeding mechanism of the stator spot welding machine according to the present invention.

Fig. 9 is a partial structure enlarged view of the portion X in fig. 8.

Fig. 10 is an enlarged view of a portion Y of fig. 8.

Fig. 11 is a partial structure enlarged view of a portion Z in fig. 8.

Fig. 12 is a schematic view of the structure of fig. 8 in an assembled state.

Fig. 13 is a schematic structural diagram of a positioning block and a positioning ring of the stator spot welding machine of the present invention.

Fig. 14 is a schematic structural view of a rotary shaft, a water pipe, and a rotary joint of the stator spot welder according to the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.

In the present invention, the directional terms, such as "up", "down", "front", "back", "left", "right", "inner", "outer", "side", "top" and "bottom", refer to the orientation of the drawings, and the directional terms are used for illustration and understanding, but not for limiting the present invention.

The terms "first," "second," and the like in the terms of the present invention are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, nor should they be construed as limiting in any way.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "secured" are to be construed broadly, e.g., the connection may be a detachable connection or a connection in a unitary structure; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In prior art, mainly weld the solidus operation by the manual work, fix the stator through simple and easy frock clamp, weld it again by hand, not only intensity of labour is big, and the cost of labor is high, welds unstability moreover, and the welding effect is poor, and production efficiency is low.

The present invention provides a preferred embodiment of a stator spot welder that can solve the above technical problems.

Referring to fig. 1 and 2, fig. 1 is a schematic structural diagram of a preferred embodiment of the stator spot welder of the present invention, and fig. 2 is a schematic structural diagram of an explosion of the stator spot welder of the present invention.

In the drawings, elements having similar structures are denoted by the same reference numerals.

The utility model provides a stator spot welder for lug 42 on the pressure welding stator 14 for lug 42 compresses tightly enameled wire 41 and gets rid of the enameled wire 41 on and is compressed tightly the coating with lacquer at position by lug 42, and it includes base case 11, case cover 111, fume extractor 17, transfer line body 12, positioning die 13, servo indexing mechanism 15, loading system 16, feeding mechanism 19, controlling means 18.

Wherein the box cover 111 is provided on top of the base box 11.

The fume extractor 17 is arranged on the box cover 111, the servo indexing mechanism 15 and the pressurizing mechanism 16 are positioned in the box cover 111, the fume extractor 17 comprises a fume suction port positioned in the box cover 111 and a fume discharge port positioned outside the box cover 111, a fume suction pipe 171 is arranged on the inner side of the fume suction device, and one end of the fume suction port positioned in the box cover 171 is used for sucking and discharging fume generated by welding in the box cover 111.

Positioning die 13 slides and sets up on transfer line body 12, is provided with the constant head tank that is used for the location to place stator 14 on positioning die 13, is provided with on the inner wall in the constant head tank and pairs the groove, is provided with in the periphery of stator 14 and pairs the corresponding portion of cooperateing of groove, through the cooperation of pairing groove and portion of cooperateing for when stator 14 is installed to positioning die 13 on, can avoid stator 14 and positioning die 13 to adorn instead.

The servo indexing mechanism 15 is located above the conveyor line body 12, and is used for being connected with the stator 14 to drive the stator 14 to rotate according to a set stroke, so as to perform pressure welding on a plurality of wire lugs 42 on the peripheral side of the stator 14.

The pressurizing mechanism 16 is disposed above the conveyor line body 12 and on one side of the servo indexing mechanism 15, and is used for pressure welding the wire lugs 42 on the stator 14.

The feeding mechanism 19 is located below the conveyor line body 12, and is used for pushing the positioning die 13 and the stator 14 in the positioning die 13 to ascend so as to be matched with the servo indexing mechanism 15, so that the plurality of wire lugs 42 on the peripheral side of the stator 14 are subjected to pressure welding by the pressurizing mechanism 16.

The control device 18 is connected to the box cover 111 through the rotary suspension arm 181, the rotary suspension arm 181 is rotatably connected to the box cover 111, the control device 18 is rotatably connected to the rotary suspension arm 181, the rotary suspension arm 181 enables the touch screen to rotate to different positions, operation is facilitated, the control device 18 is provided with a touch screen and a plurality of buttons, and the control device 18 is used for adjusting equipment parameters, such as feeding parameters of the pressurizing mechanism 16 and rotating parameters of the servo indexing mechanism 15.

On the other hand, the stator spot welding machine further comprises air blowing equipment, wherein a universal bamboo joint air pipe is connected to the air blowing equipment, when the wire lugs 42 on the stator 14 are subjected to pressurization heating welding through the pressurization mechanism 16, an output air port of the universal bamboo joint air pipe is subjected to air blowing cooling on the wire lugs 42, the air blowing equipment is additional external equipment, and only the air blowing equipment needs to be fixed on the box cover 111, and the universal bamboo joint air pipe is adjusted to enable the output air port of the air blowing equipment to be subjected to air blowing cooling on the wire lugs 42.

Preferably, sliding doors are provided on one or more sides of the housing 111 to facilitate installation and maintenance of the components within the housing 111.

In fig. 1 of this embodiment, the front side of the box cover 11 is open, a sliding door can be installed at the open, which is not shown in the figure, and only a see-through glass window is arranged on the other side.

This stator spot welder is through placing stator 14 on positioning die 13, positioning die 13 carries on the transfer line body 12, feeding mechanism 19 will carry to positioning die 13 on the settlement position and the stator 14 in the positioning die 13 together propelling movement rise to pair with servo indexing mechanism 15, servo indexing mechanism 15 drives paired stator 14 and rotates, and then make loading system 16 can carry out the pressure welding to the lug 42 of settlement position on the stator 14, can realize carrying and welding stator 14's automation, the welding is stable and effectual, and the production efficiency is improved.

It should be noted that an inductor may be disposed on one side of the conveyor line body 12 to sense whether a corresponding stator moves to a set position with the positioning mold 13.

Referring to fig. 3 and 4, fig. 3 is a top view of a conveyor line body of the stator spot welder of the present invention, and fig. 4 is a schematic diagram of a pairing structure of a positioning mold and a stator of the stator spot welder of the present invention.

The conveyor line body 12 in this embodiment includes a length section 21, a width section 22, a first cylinder and a second cylinder, the first cylinder is connected to the first pushing block 251, the second cylinder is connected to the second pushing block 252, the first cylinder and the second cylinder are not shown in the figure, and the positions thereof can refer to the first pushing block 251 and the second pushing block 252 respectively.

The extending directions of the two length sections 21 are parallel, the same ends of the two length sections 21 are connected through the width sections 22, a first air cylinder is arranged at one end of each length section 21 and used for pushing the positioning mold 13 on the length section 21 to move, a second air cylinder is arranged at one end of each width section 22 and used for pushing the positioning mold 13 on the width section 22 to move.

It will be appreciated that the first air cylinder is also used to push the positioning die 13 from the length section 21 onto the width section 22, and the second air cylinder is also used to push the positioning die 13 from the width section 22 onto the length section 21.

One length section 21 penetrates through the box cover 111, the other length section 21 and the two width sections 22 are located on the outer side of the box cover 111, and the length section 21 and the width sections 22 are located on the outer side of the box cover 111, so that the operability of the stator 14 on the box cover is strong, the operation space is large, the size of the box cover 111 can be reduced, and materials are saved.

Specifically, the positioning mold 13 includes a slide plate 31 and a positioning main body portion 32 detachably connected to the slide plate 31 in a positioning manner, and the positioning main body portion 32 and the slide plate 31 are detachably connected in a mating manner.

The sliding plate 31 is provided with a positioning through groove 313 for positioning and connecting the positioning main body part 32, the inner wall of the positioning through groove 313 is provided with a supporting boss 314 for supporting the positioning main body part 32, and the positioning through groove 313 is also used for forming a clearance with an ascending or descending path of the feeding mechanism 19, so that the feeding mechanism 19 can pass through the positioning through groove 313 to push the positioning main body part 32 to ascend, and the positioning main body part 32 is positioned and connected in the positioning through groove 313 and supported by the supporting boss 314 when descending.

The length section 21 includes a first sliding groove, the width section 22 includes a second sliding groove, the sliding plate 31 includes first sliding surfaces 311 on two opposite sides and second sliding surfaces 312 on two opposite sides, only one first sliding surface 311 and one second sliding surface 312 are indicated in fig. 4, when the positioning mold 13 is located on the length section 21, the first sliding surface 311 is in sliding contact with an inner side surface of the first sliding groove, and the second sliding surface 312 is in sliding contact with an inner side surface of the second sliding groove.

The first sliding chute and the second sliding chute each include a supporting bottom wall 23 for supporting the sliding plate 31 and a avoiding groove 24 disposed on the supporting bottom wall 23, and the avoiding groove 24 is used for avoiding the first pushing block 251 and the second pushing block 252.

In the positioning mold 13 of the present embodiment, the slide plate 31 is slidably connected to the conveyor line body 12, and when the feeding mechanism 19 is raised, only the positioning main body portion 32 and the stator 14 on the positioning main body portion 32 are pushed and raised.

It should be noted that the sliding plate 31 in this embodiment is a square plate, the side length of the sliding plate is one unit length, the length of the length section 21 is an integral multiple of the unit length, and the length of the width section 22 is an integral multiple of the unit length, during the operation, two vacant positions of the unit length are reserved on the whole conveying line body 12, the two vacant positions are respectively located at diagonal positions, the positioning molds 13 on the two length sections 21 move synchronously and reversely, and the positioning molds 13 on the two width sections 22 move synchronously and reversely.

The feeding mechanism 19 can pass through the avoiding groove 24 to push the positioning main body part 32.

Or, since the first cylinder and the second cylinder only need to push one stroke per unit length at a time, the setting length of the avoiding groove 24 may be one unit length, and meanwhile, a avoiding hole for the feeding mechanism 19 to pass through is provided at a position on the supporting bottom wall 23 corresponding to the feeding mechanism 19.

Referring to fig. 7, fig. 8 and fig. 11, wherein fig. 7 is a schematic structural diagram of a feeding mechanism of a stator spot welding machine according to the present invention, fig. 8 is a schematic structural diagram of an explosion structure of a servo indexing mechanism and a feeding mechanism of a stator spot welding machine according to the present invention, and fig. 11 is an enlarged view of a partial structure of a Z portion in fig. 8.

The feeding mechanism 19 in this embodiment includes a driving module 72, a feeding shaft 73, and a feeding base 74.

One end of the feeding shaft 73 is connected to the driving module 72, and the other end is connected to the feeding base 74, so that the feeding base 74 is driven by the driving module 72 to ascend toward the servo indexing mechanism 15, and the feeding base 74 is provided with a magnet block and a positioning column 741.

A magnetic attraction part corresponding to the magnet block and a positioning hole corresponding to the positioning post 741 are arranged on the bottom surface of the positioning main body part 32 of the positioning mold 13 close to the feeding mechanism 19, and the feeding base 74 and the positioning main body part 32 are fixedly connected through magnetic attraction and positioning of the positioning post 741, so that the feeding base 74 and the positioning main body part 32 are fast and stably butted.

The magnetic part can be ferromagnetic metal or magnet block.

Preferably, the end of the positioning post 741 is provided with a rounded corner for facilitating connection into the positioning hole, so that when there is a slight deviation between the feeding base 74 and the positioning main body portion 32, the positioning post 741 can be smoothly mated into the positioning hole on the positioning main body portion 32 through the rounded corner.

More specifically, the feeding mechanism 19 further includes a feeding bottom plate 7A, a pressure seat 75, a pressure bearing 7I, a positioning bottom plate 7G, a first insulating plate 7B, a slider assembly 7K, a cylinder fixing block 7L, a positioning cylinder 7J, and a positioning block 77.

The feeding bottom plate 7A is connected with the sliding part of the driving module 72, the pressure seat 75 is arranged on the feeding bottom plate 7A, the first insulation plate 7B is arranged between the feeding bottom plate 7A and the pressure seat 75, one end of the feeding shaft 73 is rotatably connected to the pressure seat 75 through the pressure bearing 7I, and one end of the feeding shaft 73 close to the pressure seat 75 is connected with the positioning ring 76.

The positioning bottom plate 7G is connected to one side of the pressure seat 75, the positioning cylinder 7J is connected to the positioning bottom plate 7G through a cylinder fixing block 7L, the positioning block 77 is used for contacting with the positioning ring 76 to limit the rotation of the feeding shaft 73, the positioning block 77 is connected to the positioning bottom plate 7G through a sliding block component 7K in a sliding mode, and the positioning block 77 is connected with a telescopic rod of the positioning cylinder 7J to drive the positioning block 77 to slide, so that the positioning block 77 is in contact with or separated from the positioning ring 76.

Referring to fig. 13, fig. 13 is a schematic structural diagram of a positioning block and a positioning ring of a stator spot welder according to the present invention.

A limit groove 761 is provided on the circumferential side of the positioning ring 76, a limit projection 771 corresponding to the limit groove 761 is provided on the positioning block 77, the length direction of the limit groove 761 is in accordance with the extending direction of the feed shaft 73, and the shape of the limit projection 771 is adapted to the limit groove 761.

In this embodiment, the driving module 72 is connected to the fixed base plate 1A through the first support bracket 71, the first support bracket 71 includes a first support plate 711, a first connecting plate 713 and a first rib plate 712, the first support plate 711 and the first connecting plate 713 are substantially perpendicular, the first rib plate 712 is connected between the first connecting plate 713 and the first support plate 711 to form a tripod structure, the structure is firm, and the driving module 72 is connected to one surface of the first support plate 711.

The first engaging plate 713 is fixedly coupled to the fixing base plate 1A, and a first coupling groove for forming a positioning with the first engaging plate 713 is formed on the fixing base plate 1A.

Referring to fig. 7 and 11, the pressure seat 75 is slidably disposed on the first insulating plate 7B through the slide rail assembly 7C, and a sliding track of the pressure seat 75 is consistent with an extending direction of the feeding shaft 73.

The feeding mechanism 19 further includes a first elastic member 79, a pressure adjustment plate 78, and a baffle 7H, and the first elastic member 79 may be a spring.

The pressure adjusting plate 78 is arranged at one end of the pressure seat 75 far away from the positioning die 13, the first elastic member 79 is arranged between the pressure seat 75 and the pressure adjusting plate 78, the direction of the elastic force of the first elastic member 79 is consistent with the sliding track of the pressure seat 75, the baffle 7H is arranged at one end of the pressure seat 75 close to the positioning die 13 and used for limiting the sliding of the pressure seat 75, and the stator 14 and the positioning part 54 of the servo indexing mechanism 15 are elastically paired and stably paired through the arrangement of the first elastic member 79.

Further, the feeding mechanism 19 further includes an adjusting screw 7D and an adjusting nut 7E.

The adjusting threaded rod 7D penetrates through and is in threaded connection with the pressure adjusting plate 78, one end, close to the first elastic piece 79, of the adjusting threaded rod 7D is connected with the adjusting nut 7E, the other end of the adjusting threaded rod 7D is an adjusting end head 7F for screwing the adjusting threaded rod 7D, the first elastic piece 79 is arranged between the pressure seat 75 and the adjusting nut 7E, a connecting hole for positioning and connecting the first elastic piece 79 is formed in the pressure seat 75, the adjusting threaded rod 7D can be screwed through the adjusting threaded rod, the adjusting nut 7E can extrude the first elastic piece 79, the extrusion pressure degree of the first elastic piece 79 is adjusted, and then the elastic extrusion force of the first elastic piece 79 on the stator 14 on the feeding base 74 is adjusted.

Referring to fig. 5, fig. 8 and fig. 9, wherein fig. 5 is a schematic structural view of a servo indexing mechanism of a stator spot welding machine according to the present invention, fig. 8 is a schematic structural view of an explosion structure of the servo indexing mechanism and a feeding mechanism of the stator spot welding machine according to the present invention, and fig. 9 is an enlarged partial structure diagram of the X portion in fig. 8.

The utility model provides a servo indexing mechanism 15 includes rotation axis 5D, location portion 54, drive division, connecting plate 58, first support frame 71, welding tungsten piece 5M, welding copper ring 57 and tungsten piece fixing base 55.

The driving part is arranged on the connecting plate 58, the extending direction of the rotating shaft 5D is consistent with the lifting direction of the feeding mechanism 19, one end of the rotating shaft 5D is in transmission connection with the driving part, the other end of the rotating shaft is connected with the positioning part 54, the positioning part 54 is used for being in positioning contact with the inner side wall of the stator 14, the positioning part 54 is in positioning contact with the end face of the silicon steel sheet of the stator 14, the influence of stacking thickness errors cannot be caused, and the positioning precision is high.

The drive section includes a transmission assembly, an indexer 52 and a motor 53.

The connecting plate 58 is connected with the fixed base plate 1A through the second support frame 51, the indexer 52 and the motor 53 are located on one side of the connecting plate 58, the transmission assembly is arranged on the other side of the connecting plate 58, and the indexer 52 and the motor 53 are in transmission connection through the transmission assembly.

Specifically, drive assembly includes belt 5B, action wheel 5A, and follow driving wheel 59, action wheel 5A is connected with motor 53's pivot, rotation axis 5D passes through the keybar and is connected with following driving wheel 59, and will follow driving wheel 59 locking connection on rotation axis 5D through the retaining member, action wheel 5A is connected through belt 5B transmission with following between the driving wheel 59, and then make motor 53 can move rotation axis 5D and rotate, and rotation axis 5D is connected with graduator 52, make rotation axis 5D can high-accuracy graduation rotate, thereby make the line ear 42 on the stator 14 after setting for the corner, line ear 42 can be accurate relative with pressurization mechanism 16, and then improve welding precision.

In addition, the second support frame 51 includes a second support plate 511, a second connection plate 513 and a second reinforcing rib plate 512, the second support plate 511 and the second connection plate 513 are substantially perpendicular, the second reinforcing rib plate 512 is connected between the second connection plate 513 and the second support plate 511 to form a tripod structure, the structure is firm, the indexer 52 is connected to one surface of the second support plate 511, and a backing plate 5H and a second insulating plate 5G are arranged between the indexer 52 and the second support plate 511.

Referring to fig. 8 and 12, fig. 12 is a schematic view illustrating an assembled state of the structure of fig. 8, and the structure shown in fig. 12 can be understood as the stator spot welding module of the present invention.

The first supporting frame 71 and the second supporting frame 51 are respectively connected to two sides of the fixed base plate 1A, the second connecting plate 513 is fixedly connected to the fixed base plate 1A, and a second connecting groove used for forming positioning with the second connecting plate 513 is formed in the fixed base plate 1A, so that the servo indexing mechanism 15 and the feeding mechanism 19 can be connected to form a combined structure with a stable structure, the feeding mechanism 19 can more stably push the stator 14 to be matched with the servo indexing mechanism 15, the working stability and the welding precision are improved, and meanwhile, the installation on the base box 11 is facilitated.

The extending direction of the rotating shaft 5D coincides with the lifting direction of the feeding mechanism 19, one end of the rotating shaft 5D is rotatably connected to the indexer 52 via a bearing 5I, the other end is connected to the positioning portion 54, and the bearing 5I is restricted by the bearing cover 5J to the indexer 52.

Two ends of the indexer 52 are respectively provided with a bearing 5I, a bearing sleeve 5K is sleeved on the rotating shaft 5D, and two ends of the bearing sleeve 5K are respectively in contact positioning with the bearings 5I at the two ends.

In this embodiment, the indexer 52 is fixedly connected to the first support frame 71, the motor 53 is connected to the connecting plate 58, the connecting plate 58 is provided with a strip-shaped hole 581 used for being connected with the fixed base plate 1A, and the connecting position between the connecting plate 58 and the fixed base plate 1A can be adjusted by adjusting the connecting position along the strip-shaped hole, so as to adjust the distance between the indexer 52 and the motor, and further adjust the tightness of the belt 5B.

Tungsten piece fixing base 55 is connected in the one end that rotation axis 5D is close to location portion 54, welding tungsten piece 5M and welding copper ring 57 all set up on tungsten piece fixing base 55, welding tungsten piece 5M passes through fixed the setting on tungsten piece fixing base 55 of tungsten piece fixed block 56 detachable, welding copper ring 57 is used for electrically conducting with the contact of bar copper 63, welding tungsten piece 5M is used for electrically conducting with the contact of bar tungsten 64, and lug 42 moves to between welding tungsten piece 5M and the bar tungsten 64, in order to carry out the pressure heating welding.

Welding tungsten piece 5M passes through the fixed setting of tungsten piece fixed block 56 detachable on tungsten piece fixing base 55, not only can guarantee good electric conductivity, has fine replaceability simultaneously, because welding tungsten piece 5M is consumptive material and difficult processing, adopts this kind of mode can practice thrift the cost.

Referring to fig. 14, fig. 14 is a schematic structural diagram of a rotating shaft, a water pipe and a rotary joint of a stator spot welding machine according to the present invention.

The servo indexing mechanism 15 in this embodiment further includes a water pipe 5E, and a receiving hole 5D1 is provided in the rotary shaft 5D, the receiving hole 5D1 is a blind hole, and a port of the receiving hole 5D1 is an output port for outputting cooling water.

One end of the water passing pipe 5E is connected to the receiving hole from the outlet to input cooling water, and the other end is used for connecting with corresponding water supply equipment, the axial diameter of the water passing pipe 5E is smaller than the aperture of the receiving hole 5D1, and a water cooling channel for flowing and outputting cooling water is formed between the outer peripheral surface of the water passing pipe 5E and the inner wall surface of the receiving hole 5D 1.

The servo indexing mechanism 15 further comprises a joint fixture 5F and a rotary joint 5C.

The rotary joint 5C comprises a first joint 5C1 and a second joint 5C2 which are in sealed communication and are in rotary connection, a rotary axis between the first joint 5C1 and the second joint 5C2 is collinear with a rotary axis of the rotary shaft 5D, the first joint 5C1 is in sealed connection with an output port, the second joint 5C2 is in sealed connection with the cooling water recovery device, the second joint 5C2 is connected to the connecting plate 58 through a joint fixing member 5F, the first joint 5C1 and the second joint 5C2 can rotate relatively, the first joint 5C1 can rotate along with the rotary shaft 5D, the second joint 5C2 does not rotate, and therefore can be connected with the cooling water recovery device and the water supply device, water flowing inside and outside is achieved, and connection cannot be achieved because the water supply device or the cooling water recovery device cannot rotate.

The cooling water recovery device can also be water supply equipment, the heated cooling water can flow to the water supply equipment after passing through a set cooling path, and the water supply equipment can convey the cooling water to the accommodating hole for cooling and realizing circulating cooling.

The rotary joint 5C includes a first passage 5C3, a second passage 5C4 and a third passage 5C5, the first passage 5C3 and the second passage 5C4 extend in the same direction, the water passage 5E is connected to the accommodating hole 5D1 through the second passage 5C4 and the first passage 5C3, the second passage 5C4 is located in the second joint 5C2 for fixedly connecting the water passage 5E, the hole diameter of the first passage 5C3 is larger than the shaft diameter of the water passage 5E, and the third passage 5C5 is located in the second joint and communicates with one side of the first passage 5C 3.

Referring to fig. 6, 8 and 10, fig. 6 is a schematic structural diagram of a pressurizing mechanism of a stator spot welding machine according to the present invention, and fig. 10 is an enlarged view of a portion Y in fig. 8.

In the present invention, the pressurizing mechanism 16 includes a copper bar 63 and a tungsten bar 64, the copper bar 63 is a negative electrode, and the tungsten bar 64 is a positive electrode.

In the embodiment, two opposite sides of the servo indexing mechanism 15 are respectively provided with one pressurizing mechanism 16, and the two pressurizing mechanisms 16 are symmetrically arranged on two sides of the servo indexing mechanism 15 for pressure welding, so that the stress is stable.

The pressing mechanism 16 further includes a lifting module 61, a moving module 62, a sliding base and a second elastic member 66, the second elastic member 66 can be a spring, the moving module 62 is connected to the lifting module 61 to obtain a lifting motion, a lifting direction of the moving module 62 is consistent with a lifting direction of the feeding mechanism 19, and the sliding base is connected to the moving module 62 to obtain a movement toward the servo indexing mechanism 15.

The sliding base comprises a main body plate 651 and a limit plate 652 arranged at one end of the main body plate 651 far away from the servo indexing mechanism 15, a tungsten rod 64 is fixedly connected to the main body plate 651, a copper rod 63 is arranged on the main body plate 651 in a sliding mode, the sliding direction is consistent with the moving direction of the sliding base, a second elastic piece 66 is arranged between the copper rod 63 and the limit plate 652, and the elastic force direction of the second elastic piece 66 is consistent with the sliding track of the copper rod 63.

Through setting up second elastic component 66 for tungsten bar 64 and bar copper 63 can set up on same slide, by same removal module 62 drive feed saving cost and resource, when tungsten bar 64 and lug 42 contact, bar copper 63 can with welding copper ring 57 electrical contact, when tungsten bar 64 and lug 42 contact and continue to feed extrusion lug 42 and warp, elastic deformation through second elastic component 66 makes bar copper 63 can with welding copper ring 57 electrical contact, and do not take place too big extrusion deformation between the two.

The moving module 62 comprises a motor, a screw rod, a coupler and a base 621, the motor drives the screw rod to rotate through the coupler, the sliding seat is arranged on the base 621 in a sliding mode, the sliding seat is connected with a nut piece on the screw rod and rotates through the motor to drive the screw rod to slide, the moving module 62 is a common screw rod driving structure, and repeated description is omitted here.

A pressurizing electrode head 67 is further arranged on the sliding seat, and the tungsten rod 64 and the copper rod 63 are respectively connected with the pressurizing electrode head 67 so as to be in conductive contact with the stator 14, the welding tungsten piece 5M, the welding copper ring 57 and the tungsten piece fixing seat 55 to form a loop for power supply welding.

In the present embodiment, the positioning portion 54 is slidably connected to the rotating shaft 5D, the sliding direction coincides with the extending direction of the rotating shaft 5D, the tungsten piece fixing seat 55 is fixedly connected to the rotating shaft 5D, the positioning portion 54 and the tungsten piece fixing seat 55 are connected by a plurality of spring pins 5L, and the elastic force direction of the spring pins 5L coincides with the extending direction of the rotating shaft 5D.

In the welding process, under the action of high temperature and pressurization, the wire lug 42 is easily adhered to the welding tungsten piece 5M, and further the stator 14 may not descend along with the positioning main body part 32, so by providing the spring pin 5L, in the descending process of the feeding shaft 73, the elastic force of the spring pin 5L can extrude the positioning part 54 to slide away from the tungsten piece fixing seat 55, so that the wire lug 42 is separated from the welding tungsten piece 5M.

The utility model discloses a theory of operation: as shown in fig. 1, a stator 14 to be welded is placed on a positioning die 13 at one end of a length 21 outside a conveyor line body 12, the conveyor line body 12 runs and gradually conveys the stator 14 to the length 21 inside the conveyor line body 12, and when the stator reaches a set position, a driving module 72 drives a feeding shaft 73 to ascend;

before the feeding shaft 73 is driven to ascend, the positioning cylinder 7J extends to drive the positioning block 77 to slide to be in contact with the positioning ring 76, so that the rotation of the feeding shaft 73 is limited;

the feeding shaft 73 is lifted to enable the feeding base 74 and the positioning main body part 32 to form fixed connection through magnetic attraction and positioning of the positioning column 741, the positioning main body part 32 and the sliding plate 31 are separated through continuous lifting, the stator 14 on the positioning main body part 32 is enabled to be in positioning contact with the positioning part 54 on the servo indexing mechanism 15 through further lifting, and in the further lifting process, the first elastic piece 79 is gradually compressed to form buffering, and meanwhile, the stator 14 and the positioning part 54 form stable elastic positioning matching;

then, the positioning cylinder 7J retracts to drive the positioning block 77 to slide away from the positioning ring 76, so that the servo indexing mechanism 15 can drive the paired stator 14 to rotate;

through the preset arrangement, when the stator 14 is pushed to be stably matched with the positioning part 54, the pressing mechanism 16 can move to perform the first pressure welding on the wire lugs 42 on the stator 14 without rotating, and then the motor 53 of the servo indexing mechanism 15 works to drive the driving wheel 5A, the belt 5B and the driven wheel 59 to rotate, so as to drive the rotating shaft 5D to rotate, further drive the positioning part 54 and the positioning part 14 matched with the positioning part to rotate by a set angle, so as to perform the pressure welding on the wire lugs 42 at other positions on the peripheral side of the stator 14 until the pressure welding on all the wire lugs 42 is completed;

during welding, the pressurizing electrode head 67 forms a current loop with the welding tungsten piece 5M, the welding copper ring 57, the tungsten piece fixing seat 55 and the lug 42 through the tungsten rod 64 and the copper rod 63, and welding resistance is formed at the position of the tungsten rod 64 to generate welding heat, so that the purpose of welding is achieved;

in the welding process, the purpose of cooling the rotating main shaft 5D by water flowing through the rotating joint 5C and the water pipe 5E can be achieved;

on the other hand, after the welding is completed, in the process that the feeding shaft 73 descends, the elastic force of the spring pin 5L can urge the stator 14 to be separated from the servo indexing mechanism 15, so that the stator 14 can descend along with the positioning main body part 32;

after welding, the positioning cylinder 7J extends to drive the positioning block 77 to slide and contact with the positioning ring 76, so as to limit rotation of the feeding shaft 73, the feeding shaft 73 drives the positioning main body part 32 and the stator 14 thereon to descend together, and the positioning main body part 32 is matched with the sliding plate 31 at the corresponding position;

the conveyor line body 12 runs, the length section 21 on the inner side sends the welded stator out of the box cover 11, and then the stator is taken out and placed in a corresponding storage area by a manipulator or a manual work.

This completes the process of welding the lug on the stator by the stator spot welder of the preferred embodiment.

The stator spot welding machine of the preferred embodiment places the stator on the positioning die, the positioning die is conveyed on the conveying line body, the feeding mechanism pushes and raises the positioning die and the stator conveyed to the set position to be matched with the servo indexing mechanism, and the servo indexing mechanism drives the matched stator to rotate, so that the pressurizing mechanism can pressurize and weld the lug at the set position on the stator, the automatic conveying and welding of the stator can be realized, the stator spot welding machine has the functions of automatic positioning, automatic demolding and circulating water cooling, the welding is stable and good in effect, the labor intensity is reduced, the production efficiency is improved, and the economic benefit is increased;

In summary, although the present invention has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, so that the scope of the present invention shall be determined by the scope of the appended claims.

Claims

1. The utility model provides a stator spot welding module for the lug on the pressure welding stator for the lug compresses tightly the enameled wire and gets rid of on the enameled wire by the coating with lacquer at lug compression position, its characterized in that includes:

2. The stator spot welding module of claim 1, wherein the feed mechanism comprises a drive module, a feed shaft, and a feed base;

3. The stator spot welding module according to claim 2, wherein the feeding mechanism further comprises a feeding bottom plate, a pressure seat, a pressure bearing, a positioning bottom plate, a slider assembly, a cylinder fixing block, a positioning cylinder and a positioning block;

4. The stator spot welding module according to claim 3, wherein the pressure seat is slidably arranged on the feeding bottom plate through a sliding rail assembly, and the sliding track of the pressure seat is consistent with the extending direction of the feeding shaft;

5. The stator spot welding module of claim 4, wherein the feed mechanism further comprises an adjustment screw and an adjustment nut;

6. A stator spot welding machine is characterized in that the stator spot welding module of claim 1 is used, the stator spot welding machine further comprises a base box and a conveying line body, a box cover is arranged at the top of the base box, a sliding door is arranged on one side or multiple sides of the box cover, and the conveying line body penetrates through the box cover from the outside;

7. The stator spot welder of claim 6, wherein the conveyor line body comprises a length section, a width section, a first cylinder, and a second cylinder;

8. The stator spot welder according to claim 7, wherein the length section includes a first runner and the width section includes a second runner, and the positioning mold includes a slide plate and a separable positioning body portion positioned and connected to the slide plate;

9. A stator spot welder according to claim 6, characterized in that said pressurizing mechanism comprises a copper bar and a tungsten bar;

10. The stator spot welder according to claim 6, wherein the feeding mechanism is fixedly arranged on a first support frame, the servo indexing mechanism is arranged on a second support frame, the first support frame and the second support frame are respectively connected to two sides of the fixed base plate, a first connecting groove for positioning and connecting the first support frame is arranged on one side of the fixed base plate, and a second connecting groove for positioning and connecting the second support frame is arranged on the other side of the fixed base plate.