Lifting type internal expansion device

Abstract

The present invention provides a lifting type inner expansion device, which includes: an inner expansion mechanism, a lifting mechanism and a power mechanism, and the power mechanism drives the inner expansion mechanism to perform lifting movement through the lifting mechanism. The lifting type inner expansion device of the present invention can, after the flat wire hairpins are inserted and connected to form a circular array, make the inner expansion mechanism move to the inner side of each flat wire hairpin through the lifting mechanism, push and expand each flat wire hairpin from the inner side, so that each flat wire hairpin arranged in a circular array is pushed in place to form the required wire crown shape, which is convenient for subsequent overall transfer to the corresponding work station, and further convenient for insertion into the stator core.

Description

Technical Field

[0001] The invention relates to the technical field of motor stator production, and in particular to a lifting type internal expansion device. Background Art

[0002] At present, in the production of new energy vehicle motors, in order to improve the efficiency of motor products, flat wire hairpins are used instead of round electromagnetic wires. When the flat wire hairpin is assembled in the motor, it needs to be plugged into the stator core of the motor in a specific way. In the actual production process, the flat wire hairpin is not directly plugged into the stator core, but needs to be pre-plugged to form a wire crown, and then moved to the corresponding work station as a whole for easy insertion into the stator core. Therefore, it is necessary to propose further solutions for how to form the wire crown shape. Summary of the invention

[0003] The present invention aims to provide a lifting type internal expansion device to overcome the deficiencies in the prior art.

[0004] In order to solve the above technical problems, the technical solution of the present invention is:

[0005] A lifting internal expansion device, comprising: an internal expansion mechanism, a lifting mechanism and a power mechanism, wherein the power mechanism drives the internal expansion mechanism to perform lifting motion through the lifting mechanism;

[0006] The internal expansion mechanism comprises: an internal expansion unit and a driving unit;

[0007] The inner expansion unit comprises: a top cover, a bushing and a plurality of inner expansion sheets, wherein the top cover is arranged at the upper end of the bushing, the plurality of inner expansion sheets are arranged at intervals around the center circumferentially, and any inner expansion sheet is arranged radially;

[0008] The driving unit includes: a connecting rod, a push rod and a cylinder. The push rod is vertically arranged, and its lower end is transmission-connected to the cylinder, and the upper end extends between several inner expansion plates. The push rod is linked with each inner expansion plate through multiple connecting rods. Any of the connecting rods is tilted. When the push rod is driven by the cylinder to move upward, the several inner expansion plates are pushed to expand outward through the connecting rods.

[0009] As an improvement of the lifting type internal expansion device of the present invention, the lifting mechanism includes: a screw rod and a lifting platform; the lifting platform performs lifting movement under the drive of the screw rod, and the internal expansion mechanism is integrally installed on the lifting platform.

[0010] As an improvement of the lifting type internal expansion device of the present invention, a base is further provided on the lifting platform, the cylinder is accommodated in the base, and the internal expansion mechanism is initially located on the base.

[0011] As an improvement of the lifting and inner-expanding device of the present invention, the lifting mechanism further includes a guide rod, the guide rod is fixed on a substrate, and the lifting table moves up and down along the guide rod through a guide sleeve.

[0012] As an improvement of the lifting and inner-expanding device of the present invention, when there are two lead screws, guide rods are arranged on both sides of any one of the lead screws.

[0013] As an improvement of the lifting and inner-expanding device of the present invention, the power mechanism includes: a motor, a guide wheel, a driven pulley and a driving pulley;

[0014] The driven pulleys are arranged at intervals on the left and right sides of one side of the motor, the guide wheels are arranged at intervals on the left and right sides between the motor and the transmission wheel, the driving wheel on the output end of the motor is linked with the guide wheel and the driven pulley through a transmission belt, and the driven pulleys are respectively sleeved on the lower ends of the corresponding lead screws.

[0015] As an improvement of the lifting and inner-expanding device of the present invention, a plurality of vertically penetrating guide grooves are further formed in the top cover, and the plurality of guide grooves are arranged corresponding to the plurality of inner-expanding sheets.

[0016] As an improvement of the lifting and inner-expanding device of the present invention, an inclined chute is further formed in any one of the inner-expanding sheets, and the connecting rod extends into the chute and slides along the chute along with the push rod.

[0017] As an improvement of the lifting and inner-expanding device of the present invention, the lower end of the push rod is in transmission connection with the cylinder through a connecting component, and the connecting component includes: a lower connecting sleeve and an upper connecting sleeve, one end of the lower connecting sleeve is connected with the output end of the cylinder, the other end is connected with one end of the upper connecting sleeve, and the other end of the upper connecting sleeve is connected with the lower end of the push rod.

[0018] As an improvement of the lifting and inner-expanding device of the present invention, the upper end of the push rod can cooperate with a bushing fitted in the top cover.

[0019] Compared with the prior art, the beneficial effects of the present invention are: after the flat wire hairpins are inserted and formed into a circular array, the lifting and inner-expanding device of the present invention can move the inner-expanding mechanism to the inner sides of the flat wire hairpins through the lifting mechanism, push and expand each flat wire hairpin from the inside, so that each flat wire hairpin arranged in a circular array is pushed in place to form the required wire crown shape, which is convenient for subsequent overall transfer to the corresponding work station, and then convenient for insertion into the stator core. Description of the Drawings

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments recorded in the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 Stereoscopic schematic diagram of an embodiment of the lifting and expanding device of the present invention;

[0022] Figure 2 For Figure 1 Stereoscopic schematic diagram of the lifting and expanding device from another angle in

[0023] Figure 3 For Figure 1 Cross-sectional view of the lifting and expanding device in

[0024] Figure 4 Top view of the arrangement mode of each expanding piece in the lifting and expanding device of the present invention. Detailed implementation manners

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0026] An embodiment of the present invention provides a lifting and expanding device, which is suitable for the internal expanding and forming of flat wire hairpins in a circular array to form a required wire crown shape, facilitating subsequent overall transfer to a corresponding station, and then facilitating insertion into a stator core.

[0027] As Figure 1 shown, the lifting and expanding device of this embodiment includes: an expanding mechanism 10, a lifting mechanism 20, and a power mechanism 30.

[0028] The power mechanism 30 drives the expanding mechanism 10 to perform a lifting motion through the lifting mechanism 20. In this way, the expanding mechanism 10 is moved to the inner side of each flat wire hairpin, facilitating the pushing and expanding of each flat wire hairpin from the inner side.

[0029] Specifically, the lifting mechanism 20 includes: a lead screw 21 and a lifting table 22. The lifting table 22 performs a lifting motion under the drive of the lead screw 21, and the expanding mechanism 10 is integrally installed on the lifting table 22. In this way, the lifting table 22 can drive the expanding mechanism 10 to perform a lifting motion in the vertical direction under the drive of the lead screw 21.

[0030] To ensure the stability of the movement, two sets of lead screws 21 can be provided. At this time, the two lead screws 21 are symmetrically distributed on both sides of the inner expansion mechanism 10. In addition, the lifting mechanism 20 further includes guide rods 23. The guide rods 23 are fixed on a substrate 24, and the lifting table 22 moves up and down along the guide rods 23 through guide sleeves. In one embodiment, when there are two lead screws 21, guide rods 23 are provided on both sides of any one lead screw 21 in the front-rear direction, and the guide rods 23 are arranged near the corresponding right-angle positions of the lifting table 22. In this way, the inclination of the lifting table 22 during the lifting process can be avoided.

[0031] As Figure 2 shown, the power mechanism 30 is used to drive the pivoting movement of the lead screw 21, and it includes: a motor 31, a guide wheel 32, a driven pulley 33, and a driving pulley 34. When there are two lead screws 21, correspondingly, the driven pulleys 33 are arranged at intervals on the left and right sides of the motor 31, the guide wheels 32 are arranged at intervals on the left and right between the motor 31 and the transmission wheel, the driving wheel on the output end of the motor 31 is linked with the guide wheel 32 and the driven pulleys 33 through a transmission belt, and the driven pulleys 33 are respectively sleeved on the lower ends of the corresponding lead screws 21. In this way, when the motor 31 works, the driving pulley 34 drives the driven pulleys 33 to move synchronously through the transmission belt, and the driven pulleys 33 further drive the two lead screws 21 to transmit power.

[0032] With reference to Figure 3 、 4 shown, the inner expansion mechanism 10 includes: an inner expansion unit 11 and a driving unit 12.

[0033] The inner expansion unit 11 is used to push and expand each flat wire hairpin from the inside under the drive of the driving unit 12, so that each flat wire hairpin arranged in a circular array is pushed in place to form the required wire crown shape.

[0034] Specifically, the inner expansion unit 11 includes: a top cover 111, a bushing 112, and a plurality of inner expansion pieces 113. Among them, the top cover 111 and the bushing 112 form an assembly space for the plurality of inner expansion pieces 113, and the top cover 111 is arranged at the upper end of the bushing 112. The plurality of inner expansion pieces 113 are arranged at intervals circumferentially around the center, and any one inner expansion piece 113 is arranged radially. A plurality of vertically penetrating guide grooves 110 are also provided on the top cover 111, and the plurality of guide grooves 110 are arranged corresponding to the plurality of inner expansion pieces 113.

[0035] In this way, when the flat wire hairpin is inserted into the corresponding mold, the lower end of the flat wire hairpin extends into the guide groove 110 opened on the top cover 111 and abuts against the corresponding inner expansion piece 113. Thus, when the plurality of inner expansion pieces 113 expand outwards, the flat wire hairpins can be pushed outwards, so that each inner expansion piece 113 is transformed from a circular array shape to the required wire crown shape in the corresponding mold.

[0036] The driving unit 12 is used to drive the above-mentioned inner expansion pieces 113 to expand, and includes: a connecting rod 121, a push rod 122 and a cylinder 123. The push rod 122 is vertically arranged, and its lower end is transmission-connected with the cylinder 123, and the upper end extends between the plurality of inner expansion pieces 113. The upper end of the push rod 122 can also cooperate with the pivot sleeve embedded in the top cover 111 to assist in positioning the push rod 122. In addition, a base 221 is also provided on the lifting platform 22, and the cylinder 123 is accommodated in the base 221, and the inner expansion mechanism 10 is initially located on the base 221.

[0037] In order to facilitate the connection between the push rod 122 and the cylinder 123, in one embodiment, the lower end of the push rod 122 is drivingly connected to the cylinder 123 through a connecting assembly 124. The connecting assembly 124 includes: a lower connecting sleeve 1241 and an upper connecting sleeve 1242, one end of the lower connecting sleeve 1241 is connected to the output end of the cylinder 123, and the other end is connected to one end of the upper connecting sleeve 1242, and the other end of the upper connecting sleeve 1242 is connected to the lower end of the push rod 122.

[0038] The push rod 122 is further linked to each inner expansion piece 113 through a plurality of connecting rods 121. Any connecting rod 121 is tilted, one end of which is transmission-connected to the corresponding inner expansion piece 113, and the other end is pivotally connected to the push rod 122. When the push rod 122 is driven by the cylinder 123 to move upward, it pushes a plurality of inner expansion pieces 113 to expand outward through each connecting rod 121.

[0039] Thus, when the cylinder 123 is working, its output end can drive the push rod 122 connected thereto to move axially upward. At the same time, since each connecting rod 121 is pivotally connected to the push rod 122, each connecting rod 121 has an upward and radial motion component during its motion, thereby driving the inner expansion piece 113 connected thereto to move upward and outward, thereby pushing each flat wire hairpin outward, so that each flat wire hairpin is arranged neatly to form the required wire crown shape.

[0040] In order to facilitate the movement of the connecting rod 121, an inclined sliding groove 1130 is also provided on any inner expansion piece 113, and the connecting rod 121 extends into the sliding groove 1130 and slides along the sliding groove with the push rod 122. In this way, when the connecting rod 121 slides along the sliding groove, the corresponding inner expansion piece 113 can be driven to expand.

[0041] To sum up, the lifting and internal expansion device of the present invention can move the internal expansion mechanism to the inner side of each flat wire hairpin through the lifting mechanism after the flat wire hairpins are plugged in to form a circular array, and push each flat wire hairpin from the inside, so that each flat wire hairpin arranged in the circular array is pushed into place to form the required wire crown shape, which is convenient for subsequent overall transfer to the corresponding workstation and then convenient for insertion into the stator core.

[0042] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be construed as limiting the claims involved.

[0043] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A lifting and inner-expanding device, characterized in that, The lifting and inner-expanding device includes: an inner-expanding mechanism, a lifting mechanism, and a power mechanism. The power mechanism drives the inner-expanding mechanism to perform lifting motion through the lifting mechanism; The inner-expanding mechanism includes: an inner-expanding unit and a driving unit; The inner-expanding unit includes: a top cover, a bushing, and a plurality of inner-expanding sheets. The top cover is arranged at the upper end of the bushing. The plurality of inner-expanding sheets are arranged at intervals circumferentially around the center, and any one of the inner-expanding sheets is arranged radially; The driving unit includes: a connecting rod, a push rod, and a cylinder. The push rod is arranged vertically. Its lower end is in transmission connection with the cylinder, and its upper end extends between the plurality of inner-expanding sheets. The push rod is linked with each inner-expanding sheet through a plurality of connecting rods. Any one of the connecting rods is arranged obliquely. When the push rod is driven by the cylinder to move upward, it pushes the plurality of inner-expanding sheets to expand outward through each connecting rod; A plurality of vertically penetrating guide grooves are further formed in the top cover. The plurality of guide grooves are arranged corresponding to the plurality of inner-expanding sheets; An inclined chute is further formed in any one of the inner-expanding sheets. The connecting rod extends into the chute and slides along the chute with the push rod.

2. The lifting and inner-expanding device according to claim 1, wherein The lifting mechanism includes: a lead screw and a lifting table; The lifting table performs lifting motion under the drive of the lead screw, and the inner-expanding mechanism is integrally installed on the lifting table.

3. The lifting and inner-expanding device according to claim 2, wherein, A base is further arranged on the lifting table. The cylinder is received in the base, and the inner-expanding mechanism is initially located on the base.

4. The lifting and inner-expanding device according to claim 2, characterized in that, The lifting mechanism further includes a guide rod. The guide rod is fixed on a base plate, and the lifting table performs lifting motion along the guide rod through a guide sleeve.

5. The lifting and inner-expanding device according to claim 4, wherein When there are two lead screws, the guide rods are arranged on both sides of any one of the lead screws.

6. The lifting and inner-expanding device according to claim 2, wherein The power mechanism includes: a motor, a guide wheel, a driven pulley, and a driving pulley; The driven pulleys are arranged at intervals left and right on one side of the motor. The guide wheels are arranged at intervals left and right between the motor and the transmission pulley. The driving pulley on the output end of the motor is linked with the guide wheel and the driven pulley through a transmission belt. The driven pulleys are respectively sleeved on the lower ends of the corresponding lead screws.

7. The lifting and inner-expanding device according to claim 1, wherein The lower end of the push rod is in transmission connection with the cylinder through a connection assembly. The connection assembly includes: a lower connection sleeve and an upper connection sleeve. One end of the lower connection sleeve is connected to the output end of the cylinder, and the other end is connected to one end of the upper connection sleeve. The other end of the upper connection sleeve is connected to the lower end of the push rod.

8. The lifting and inner-expanding device according to claim 1, wherein The upper end of the push rod can cooperate with a shaft sleeve fitted in the top cover.

Images