CN220761492U

CN220761492U - Cylindrical roll core centering fixture and conveying fixture comprising same

Info

Publication number: CN220761492U
Application number: CN202322180030.2U
Authority: CN
Inventors: 王文龙
Original assignee: Weilai Battery Technology Anhui Co ltd
Current assignee: Weilai Battery Technology Anhui Co ltd
Priority date: 2023-08-14
Filing date: 2023-08-14
Publication date: 2024-04-12
Anticipated expiration: 2033-08-14

Abstract

The utility model belongs to the technical field of cylindrical battery production, and particularly provides a cylindrical roll core centering fixture and a conveying fixture comprising the same. The cylindrical coil core clamp aims at solving the problems that the conventional cylindrical coil core clamp is easy to cause the eccentricity of a cylindrical coil core and a target piece when clamping the cylindrical coil core to a processing position for butt joint, so that the use is inconvenient and the production efficiency is influenced. For this purpose, the cylindrical winding core centering fixture comprises a mounting seat, a expanding and contracting piece and a transmission mechanism, wherein the expanding and contracting piece and the transmission mechanism are arranged on the mounting seat; the transmission mechanism is connected with the expansion and contraction piece, and when the transmission mechanism operates, the outer diameter of the expansion and contraction piece can be changed so that the expansion and contraction piece can be switched between an expansion state and a contraction state, and the expansion and contraction piece can be inserted into a central hole of the cylindrical winding core. The cylindrical roll core centering fixture can quickly position the cylindrical roll core, ensure that the axis of the cylindrical roll core is not deviated, and is convenient to use.

Description

Cylindrical roll core centering fixture and conveying fixture comprising same

Technical Field

The utility model belongs to the technical field of cylindrical battery production, and particularly provides a cylindrical roll core centering fixture and a conveying fixture comprising the same.

Background

At present, when the round winding core and the current collecting disc are welded, different clamps are adopted to respectively position the winding core and the current collecting disc.

The winding core clamp is usually positioned by adopting two arc-shaped or V-shaped holding clamps, but the positioning mode can be influenced by the symmetry of the clamp, the roundness of the winding core and the diameter deviation, so that the matching degree of the winding core and the clamp is poor, and the winding core is eccentric. In practical application, the eccentric condition appears easily when will roll up core and mass flow disk and fix a position on the processing station, in order to guarantee to roll up the core location accuracy, still need set up secondary positioning mechanism and rectify, lead to whole processing equipment structure complicated, and increased process time, influence production beat, inefficiency.

Accordingly, there is a need in the art for a new solution to the above-mentioned technical problems.

Disclosure of Invention

The utility model aims to solve the technical problems that the prior cylindrical winding core clamp is easy to cause the eccentric of the cylindrical winding core and a target piece when clamping the cylindrical winding core to a processing position for butt joint, thereby being inconvenient to use and affecting the production efficiency.

In a first aspect, the present utility model provides a cylindrical roll core centering fixture, the cylindrical roll core centering fixture comprising a mounting seat, and a expanding and contracting member and a transmission mechanism mounted on the mounting seat; the transmission mechanism is connected with the expansion and contraction piece, and when the transmission mechanism operates, the outer diameter of the expansion and contraction piece can be changed so that the expansion and contraction piece can be switched between an expansion state and a contraction state, and the expansion and contraction piece can be inserted into a central hole of the cylindrical winding core.

In the preferred technical scheme of the cylindrical roll core centering fixture, the mounting seat comprises a first mounting piece and a second mounting piece, a containing cavity is formed in the first mounting piece, an opening is formed in one end of the containing cavity, the second mounting piece is connected with the first mounting piece and seals the opening, the transmission mechanism is located in the containing cavity, one end of the transmission mechanism penetrates through the second mounting piece and is located in the outer side of the containing cavity so as to be connected with the driving mechanism to drive the transmission mechanism to operate, one end of the expansion piece is located in the containing cavity, the other end of the expansion piece penetrates through the first mounting piece to extend outwards, and the first mounting piece, the second mounting piece and the expansion piece are coaxially arranged.

In the preferred technical solution of the cylindrical winding core centering fixture, the expanding and contracting member includes a plurality of expanding and contracting rods, the expanding and contracting rods are uniformly distributed around the axial line of the first mounting member, the expanding and contracting rods include a connecting portion and an abutting portion, the abutting portion is perpendicular to the connecting portion, the abutting portion can be inserted into a central hole of the cylindrical winding core, the connecting portion is located in the accommodating cavity, a first end of the abutting portion is connected with a first end of the connecting portion, a second end of the abutting portion passes through the first mounting member and extends outwards, a second end of the connecting portion extends outwards along the radial direction of the first mounting member, the connecting portion is relatively fixed with the first mounting member along the axial line direction of the first mounting member, and the connecting portion can move along the radial direction of the first mounting member relative to the first mounting member; the transmission mechanism is connected with the connecting part and can drive the connecting part to move along the radial direction of the first mounting piece relative to the first mounting piece.

In the preferred technical scheme of the cylindrical roll core centering fixture, the transmission mechanism comprises an annular rotary table and a transmission pin, the annular rotary table and the first mounting piece are coaxially arranged, the annular rotary table is relatively fixed with the first mounting piece in the radial direction of the annular rotary table and can rotate relative to the first mounting piece, one end of the transmission pin is connected with the annular rotary table, a circumferential driving groove is formed in the second mounting piece, the other end of the transmission pin penetrates through the circumferential driving groove and is located at the outer side of the accommodating cavity, the transmission pin can move in the circumferential driving groove to drive the annular rotary table to rotate, a radial driving groove is formed in the annular rotary table, a transmission column is connected to the second end of the connecting portion and is located in the radial driving groove and can move in the length direction of the radial driving groove, and the radial driving groove rotates and drives the transmission column, the connecting portion and the abutting portion to move in the radial direction of the first mounting piece in the rotating process.

In the preferred technical scheme of the cylindrical roll core centering fixture, the transmission mechanism further comprises a rebound assembly arranged in the accommodating cavity, and the rebound assembly can enable the expansion and contraction piece to recover to the expansion state from the contraction state after the transmission mechanism is not stressed.

In the preferred technical scheme of the cylindrical roll core centering fixture, the rebound assembly comprises a reset spring and a limiting piece, the limiting piece is connected with the annular turntable, a limiting groove is formed in the cavity wall of the accommodating cavity, two limiting ends are formed in groove walls at two ends of the limiting groove in the length direction respectively, the reset spring and the limiting piece are located in the limiting groove and can move along the length direction of the limiting groove, the limiting piece is abutted with one end of the reset spring, the other end of the reset spring is abutted with one limiting end, and the limiting piece is abutted with the other limiting end under the action of the reset spring.

In the preferred technical scheme of the cylindrical winding core centering fixture, the first mounting piece is provided with a positioning piece, the positioning piece is located on one side surface of the first mounting piece far away from the second mounting piece, and the positioning piece is used for positioning the current collecting disc.

In the preferred technical scheme of the cylindrical winding core centering fixture, the first mounting piece is provided with a plurality of guide pieces, the guide pieces are uniformly arranged around the axial circumference of the first mounting piece and positioned on the outer side of the expansion piece, and the guide pieces can guide the battery shell when the battery shell is sleeved.

In the above preferred technical solution of the cylindrical winding core centering fixture, the cross section of the abutting portion is an arc ring, and a plurality of abutting portions of the expansion and contraction rods are formed with first through holes in a surrounding manner.

In the preferred technical scheme of the cylindrical roll core centering fixture, a second through hole is formed in the second mounting piece, and the second through hole and the first through hole are coaxially arranged and communicated.

In the preferred technical scheme of the cylindrical roll core centering fixture, the mounting seat is provided with a plurality of hollowed-out parts, the hollowed-out parts penetrate through the mounting seat along the thickness direction of the mounting seat, and the hollowed-out parts are uniformly distributed around the axial circumference of the mounting seat.

In a second aspect, the present utility model provides a conveying jig, which includes a conveying seat and the cylindrical winding core centering fixture described above, where the conveying seat is capable of carrying the cylindrical winding core centering fixture and is capable of limiting movement of the cylindrical winding core centering fixture relative to the conveying seat in a circumferential direction and a radial direction of the conveying seat.

In the preferred technical scheme of the conveying jig, the conveying seat is provided with a driving hole, and the driving hole is used for accommodating a driving piece so that the driving piece can operate through the driving Kong Qudong and the transmission mechanism.

In the above preferred technical scheme of the conveying jig, the conveying seat is provided with a containing hole, and the containing hole is used for fixedly placing an induction chip matched with the cylindrical battery cell.

Under the condition of adopting the technical scheme, the cylindrical roll core centering fixture comprises the mounting seat, the expansion and contraction piece and the transmission mechanism, the expansion and contraction piece can be inserted into the central hole of the cylindrical roll core, the transmission mechanism is connected with the expansion and contraction piece and can drive the expansion and contraction piece to change between an expansion state and a contraction state when the expansion and contraction piece runs, the transmission mechanism can drive the expansion and contraction piece to change the outer diameter of the expansion and contraction piece so as to increase the outer diameter of the expansion and contraction piece when the expansion and contraction piece runs in the expansion state, the cylindrical roll core is abutted and fixed in the cylindrical roll core, the centering effect of the cylindrical roll core is realized, the expansion and contraction piece and the cylindrical roll core are coaxially arranged, and when the expansion and contraction piece is used, the quick positioning of the cylindrical roll core can be realized only by positioning the mounting seat, the axial center of the cylindrical roll core is ensured not to deviate, the whole structure is simple, the use is convenient, the time required for positioning the cylindrical roll core can be shortened, the production beat is accelerated, and the production efficiency is effectively improved.

Further, the mount pad includes first installed part and second installed part, has in the first installed part and holds the chamber for install drive mechanism and expand and contract the piece, its simple structure, convenient equipment is used.

Still further, expand and contract the piece and include a plurality of expansion and contraction poles, expand and contract the pole and including connecting portion and the butt portion that links to each other, in the centre bore of cylinder book core can be inserted to the butt portion, connecting portion are located and hold the intracavity, connecting portion is fixed relatively with first installed part in the axis direction of first installed part, and can be under drive mechanism's drive for the radial direction removal of first installed part along first installed part, such setting mode, its simple structure, convenient equipment is used, and with low costs.

Still further, drive mechanism includes annular carousel and the driving pin that links to each other, be provided with radial drive groove on the annular carousel, the second end of connecting portion is provided with the drive post, the drive post is located radial drive inslot and can remove along the length direction in radial drive groove, the driving pin passes the circumference drive groove of second installed part and is located the outside that holds the chamber, the driving pin can remove in circumferential drive groove, such setting mode, through removing the driving pin in circumferential drive inslot, drive annular carousel and rotate, thereby drive the radial direction removal of expanding and contracting pole along first installed part under the spacing effect in radial drive groove, make expanding and contracting spare expand or shrink and change its external diameter, and a whole structure is simple, the state of conveniently controlling expanding and contracting spare facilitates the use.

Still further, the drive mechanism still includes the resilience subassembly, the resilience subassembly can make the expansion piece resume the expansion state from the shrink state after drive mechanism is unstressed, such setting method need not to use reciprocating drive mechanism to drive the drive pin and reciprocate in circumference actuating groove, promote the drive pin and remove when using, thereby make the expansion piece be in the shrink state, conveniently insert in the cylinder core, do not after driving the pin application of force, the resilience subassembly drives the drive pin and returns the normal position, make the expansion piece resume the expansion state, and support the cylinder core tightly fixed, its simple structure, need not to set up the locking mechanical system that makes the drive pin keep fixed again and can make the expansion pole keep stable expansion state, and then guarantee the tight effect of support to the cylinder core, more convenient application.

Still further, the resilience subassembly includes reset spring and locating part, and its simple structure is convenient to assemble and use, and with low costs.

Still further, set up the setting element and fix a position the mass flow dish on first installed part, can fix negative pole mass flow dish or anodal mass flow dish and cylinder book core simultaneously, make the two coaxial heart setting, realize that both fix a position fast to the lug of cylinder book core welds with anodal mass flow dish or negative pole mass flow dish.

Still further, set up the guide on the first installed part, can lead to battery case when the cover establishes battery case, such setting method, battery case takes place the skew when can avoiding the cover shell, makes casing and cylinder roll up core coaxial line setting, improves the speed of going into the shell, makes this cylinder roll up core centering fixture simultaneously can be directly applied to going into the shell process, and its range of application is wider.

Furthermore, the section of the abutting part is provided with an arc-shaped ring, the outer side wall of the arc-shaped ring is convenient to butt against the inner wall of the central hole of the cylindrical winding core, the contact is tight, the abutting effect is improved, and the cylindrical winding core is not scratched; the inside of the cylindrical battery is surrounded to form a first through hole, so that a welding needle or a thimble is conveniently inserted into the expanding and contracting piece to butt or weld the anode of the cylindrical battery, and therefore the centering fixture can be suitable for a plurality of procedures such as welding of anode/cathode current collecting plates, rubberizing of the anode, shell entering and the like, the use of the fixture is not required to be additionally replaced, the application is convenient, and the coaxial arrangement of each battery structural member (a cylindrical coil core, an anode current collecting plate, a cathode current collecting plate, a battery shell and the like) can be effectively ensured, and the positioning is convenient.

Still further, set up on the second installed part with first through-hole coaxial line setting and the second through-hole of intercommunication, make things convenient for welding needle or thimble to insert in the expanding and contracting piece from the bottom of second installed part, more convenient application.

Still further, set up the fretwork portion on the mount pad, the electrode lug that conveniently uses the welding needle to pass through fretwork portion with mass flow dish and cylinder core is rolled up is welded, convenient application.

In addition, the conveying jig comprises the cylindrical roll core centering clamp, the cylindrical roll core centering clamp can be fixed, and the cylindrical roll core centering clamp and the cylindrical roll core can be conveyed simultaneously by the cooperation of the transferring mechanism.

Further, the conveying seat is provided with a driving hole, and the driving piece can drive the transmission mechanism to operate through the driving hole, so that the cylindrical winding core is conveniently placed on the cylindrical winding core centering clamp and taken down under the condition that the cylindrical winding core is not separated from the conveying seat.

Still further, be equipped with the accommodation hole on the delivery seat for the fixed induction chip of placing, so that can discern cylinder electricity core fast, convenient control.

Scheme 1. A cylindrical roll core centering fixture is characterized by comprising a mounting seat, a expanding and contracting piece and a transmission mechanism, wherein the expanding and contracting piece and the transmission mechanism are mounted on the mounting seat;

the transmission mechanism is connected with the expansion and contraction piece, and when the transmission mechanism operates, the outer diameter of the expansion and contraction piece can be changed so that the expansion and contraction piece can be switched between an expansion state and a contraction state, and the expansion and contraction piece can be inserted into a central hole of the cylindrical winding core.

The cylindrical winding core centering fixture according to claim 1, wherein the mounting base comprises a first mounting member and a second mounting member,

the first mounting piece is internally provided with a containing cavity, one end of the containing cavity is provided with an opening, the second mounting piece is connected with the first mounting piece and seals the opening,

the transmission mechanism is positioned in the accommodating cavity, one end of the transmission mechanism passes through the second mounting piece and is positioned at the outer side of the accommodating cavity so as to be connected with the driving mechanism to drive the transmission mechanism to operate,

one end of the expansion and contraction piece is positioned in the accommodating cavity, the other end of the expansion and contraction piece penetrates through the first mounting piece to extend outwards, and the first mounting piece, the second mounting piece and the expansion and contraction piece are coaxially arranged.

The cylindrical winding core centering fixture according to claim 2, wherein the expansion and contraction member comprises a plurality of expansion and contraction rods which are uniformly distributed circumferentially around the axis of the first mounting member,

the expansion and contraction rod comprises a connecting part and an abutting part, the abutting part is perpendicular to the connecting part and can be inserted into a central hole of the cylindrical winding core,

The connecting part is positioned in the accommodating cavity, the first end of the abutting part is connected with the first end of the connecting part, the second end of the abutting part extends outwards through the first mounting piece,

the second end of the connecting part extends outwards along the radial direction of the first mounting piece, the connecting part is relatively fixed with the first mounting piece in the axial direction of the first mounting piece, and the connecting part can move along the radial direction of the first mounting piece relative to the first mounting piece;

the transmission mechanism is connected with the connecting part and can drive the connecting part to move along the radial direction of the first mounting piece relative to the first mounting piece.

Solution 4. The cylindrical winding core centering fixture according to solution 3, characterized in that the transmission mechanism comprises an annular turntable and a transmission pin,

the annular turntable and the first mounting piece are coaxially arranged, the annular turntable is relatively fixed with the first mounting piece in the radial direction of the annular turntable and can rotate relative to the first mounting piece,

one end of the transmission pin is connected with the annular turntable, a circumferential driving groove is formed in the second mounting piece, the other end of the transmission pin penetrates through the circumferential driving groove and is positioned at the outer side of the accommodating cavity, the transmission pin can move in the circumferential driving groove so as to drive the annular turntable to rotate,

The annular turntable is provided with a radial driving groove, the second end of the connecting part is connected with a transmission column which is positioned in the radial driving groove and can move along the length direction of the radial driving groove,

the annular turntable rotates in the rotating process, and the radial driving groove rotates and drives the transmission column, the connecting part and the abutting part to move along the radial direction of the first mounting piece.

The cylindrical winding core centering fixture according to the scheme 5 is characterized in that the transmission mechanism further comprises a rebound assembly arranged in the accommodating cavity, and the rebound assembly can enable the expanding and contracting piece to recover to the expanding state from the contracted state after the transmission mechanism is not stressed.

The cylindrical winding core centering fixture according to scheme 5, characterized in that the rebound assembly comprises a return spring and a limiting piece, the limiting piece is connected with the annular turntable,

the utility model discloses a reset spring, including holding the chamber, holding the chamber wall in chamber, be equipped with the spacing groove on holding the chamber wall in chamber, the both ends cell wall of the length direction in spacing groove forms two spacing ends respectively, reset spring with the locating part is located in the spacing groove just the locating part can be followed the length direction in spacing groove removes, the locating part with reset spring's one end butt, reset spring's the other end with one spacing end butt, just the locating part is in reset spring's effect is with another spacing end butt.

The cylindrical winding core centering fixture according to the scheme 2 is characterized in that a positioning piece is arranged on the first mounting piece, the positioning piece is located on one side face of the first mounting piece far away from the second mounting piece, and the positioning piece is used for positioning the current collecting disc.

The cylindrical winding core centering fixture according to the scheme 2 is characterized in that a plurality of guide members are arranged on the first mounting member, the guide members are uniformly circumferentially arranged around the axis of the first mounting member and located on the outer side of the expansion member, and the guide members can guide the battery housing when the battery housing is sleeved.

The cylindrical winding core centering fixture according to claim 3 is characterized in that the cross section of the abutting portion is an arc-shaped ring, and a plurality of abutting portions of the expansion and contraction rods are formed with first through holes in a surrounding mode.

The cylindrical winding core centering fixture according to claim 9, wherein a second through hole is formed in the second mounting piece, and the second through hole is coaxially arranged with and communicated with the first through hole.

The cylindrical roll core centering fixture according to any one of the schemes 1 to 10 is characterized in that a plurality of hollowed-out parts are arranged on the mounting base, the hollowed-out parts penetrate through the mounting base along the thickness direction of the mounting base, and the hollowed-out parts are uniformly distributed around the axial circumference of the mounting base.

A transport jig comprising a transport base capable of carrying the cylindrical roll core centering jig and capable of restricting movement of the cylindrical roll core centering jig relative to the transport base in a circumferential direction and a radial direction of the transport base, and the cylindrical roll core centering jig according to any one of claims 1 to 11.

The conveying jig according to claim 12, wherein the conveying seat is provided with a driving hole for accommodating a driving member so that the driving member operates through the driving mechanism Kong Qudong.

The conveying jig according to claim 12, wherein the conveying seat is provided with a receiving hole, and the receiving hole is used for fixedly placing an induction chip matched with the cylindrical battery cell.

Drawings

Preferred embodiments of the present utility model are described below with reference to the accompanying drawings, in which:

FIG. 1 is a schematic exploded view of a cylindrical core centering fixture of the present utility model;

FIG. 2 is a schematic perspective view of a cylindrical winding core centering fixture according to the present utility model;

FIG. 3 is a schematic diagram showing a perspective structure of a cylindrical winding core centering fixture according to the present utility model;

FIG. 4 is an enlarged schematic view of the structure shown at A in FIG. 3;

FIG. 5 is an enlarged schematic view of the structure at B in FIG. 3;

FIG. 6 is a top view of the cylindrical core centering fixture of the present utility model;

FIG. 7 is a cross-sectional view taken in the direction B-B of FIG. 6;

FIG. 8 is a front view of the cylindrical core centering fixture of the present utility model;

FIG. 9 is a cross-sectional view taken along the direction A-A in FIG. 8;

FIG. 10 is a partial cross-sectional view of the cylindrical core centering fixture of the present utility model;

FIG. 11 is a schematic perspective view of a telescoping member of the present utility model;

FIG. 12 is a schematic perspective view of the connection of the expansion and contraction member to the first mounting member of the present utility model;

FIG. 13 is a schematic perspective view of the transmission mechanism of the present utility model;

FIG. 14 is a schematic view of the connection of the expansion and contraction member to the transmission mechanism of the present utility model;

FIG. 15 is a schematic view of the connection structure of the transmission mechanism and the second mounting member of the present utility model;

fig. 16 is a schematic perspective view of a conveying jig according to the present utility model;

fig. 17 is a schematic perspective view of a conveying seat according to the present utility model.

List of reference numerals：

1. Centering fixture for cylindrical winding core;

11. a mounting base; 111. a first mounting member; 112. a second mounting member; 1121. a circumferential drive groove; 1122. a second through hole; 113. a receiving chamber; 1131. a limit groove; 1132. a limiting end; 1133. radial limit grooves; 114. a bolt; 115. a hollowed-out part;

12. A telescoping member; 121. a telescopic rod; 1211. a connection part; 1212. an abutting portion; 1213. a drive column; 122. a first through hole;

13. a transmission mechanism; 131. an annular turntable; 1311. a radial drive slot; 1312. a bolt moving groove; 132. a drive pin; 133. a rebound assembly; 1331. a return spring; 1332. a limiting piece;

14. a positioning piece; 141. circumferential limit protrusions;

15. a guide member; 151. a guide slope;

2. a conveying seat; 21. a drive hole; 22. an accommodation hole; 23. a third through hole; 24. a fixed cavity; 25. and positioning holes.

Detailed Description

Preferred embodiments of the present utility model are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present utility model, and are not intended to limit the scope of the present utility model.

It should be noted that, in the description of the present utility model, terms such as "inner", "outer", and the like refer to directions or positional relationships based on directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, it should be noted that, in the description of the present utility model, unless explicitly specified and limited otherwise, the terms "disposed," "connected," "mounted," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be directly connected or indirectly connected through other members. The specific meaning of the above terms in the present utility model can be understood by those skilled in the art according to the specific circumstances.

Specifically, referring to fig. 1 and 2, a cylindrical winding core centering fixture 1 of the present utility model includes a mounting base 11, and a telescopic member 12 and a transmission mechanism 13 mounted on the mounting base 11. The mounting seat 11 is used for mounting the expansion and contraction piece 12 and the transmission mechanism 13.

Wherein the transmission mechanism 13 is connected with the expansion and contraction member 12, and the transmission mechanism 13 can change the outer diameter of the expansion and contraction member 12 when in operation, so that the expansion and contraction member 12 can be switched between an expanded state and a contracted state, and further the expansion and contraction member 12 can be inserted into a central hole of a cylindrical winding core (not shown in the figure) or the expansion and contraction member 12 can be taken out from the central hole of the cylindrical winding core. Further, when the outer diameter of the expansion and contraction member 12 is changed, for example, when the outer diameter of the expansion and contraction member 12 is reduced, the expansion and contraction member 12 can be smoothly inserted into the central hole of the cylindrical winding core, and when the outer diameter of the expansion and contraction member is increased, the outer wall of the expansion and contraction member 12 is abutted against the inner wall of the cylindrical winding core, so that the cylindrical winding core can be abutted tightly and fixed, and the cylindrical winding core can be positioned and fixed conveniently.

When the expanding and contracting member 12 is in an expanded state, the outer diameter of the expanding and contracting member is increased, so that the expanding and contracting member can be abutted and fastened in the central hole of the cylindrical winding core to fix the cylindrical winding core, and further the cylindrical winding core is accurately positioned. The telescoping member 12 is reduced in inside diameter when in a collapsed condition and is separable from the cylindrical winding core to facilitate removal of the cylindrical winding core from the telescoping member 12 or insertion of the cylindrical winding core onto the telescoping member 12.

When the cylindrical winding core centering fixture 1 is used for positioning a cylindrical winding core, the transmission mechanism 13 is firstly operated to drive the expansion and contraction piece 12 to contract, the outer diameter of the expansion and contraction piece 12 is reduced, at the moment, the expansion and contraction piece 12 is inserted into a central hole of the cylindrical winding core, and then the transmission mechanism 13 is used for driving the expansion and contraction piece 12 to expand, so that the expansion and contraction piece 12 abuts against the inner wall of the cylindrical winding core, and the cylindrical winding core is fixed.

The cylindrical winding core is fixed through the expansion and contraction piece 12, so that the fixed cylindrical winding core and the expansion and contraction piece 12 are kept coaxially, the cylindrical winding core cannot be eccentric, and the position of the central axis of the cylindrical winding core is conveniently positioned. When moving it to the processing position department, because the axis of cylinder core is fixed with the axis of mount pad 11 relatively, consequently, only need the position of location mount pad 11 can realize the quick location of cylinder core to carry out welding operation, required positioning time is short, production beat is fast, has effectively improved production efficiency.

It should be noted that, the specific structure of the mounting seat 11 and the specific mounting positions of the expansion and contraction member 12 and the transmission mechanism 13 relative to the mounting seat 11 are not limited in the present utility model, so long as the expansion and contraction member 12 and the transmission mechanism 13 are mounted on the mounting seat 11, and the transmission mechanism 13 can change the outer diameter of the expansion and contraction member 12 when operating, in practical application, a person skilled in the art can set the structure of the mounting seat 11 and the specific mounting positions of the expansion and contraction member 12 and the transmission mechanism 13 relative to the mounting seat 11 according to actual needs. For example, the mounting seat 11 may be provided as a mounting plate, and the expansion and contraction member 12 and the transmission mechanism 13 are mounted on the top surface of the mounting plate; alternatively, a cavity may be provided in the mount 11, and a portion where the expansion and contraction member 12 and the transmission mechanism 13 are connected may be provided in the cavity. The specific structure of the mounting base 11 and the adjustment and change of the specific mounting positions of the expansion and contraction member 12 and the transmission mechanism 13 relative to the mounting base 11 do not deviate from the basic principle of the present utility model, and are all limited to the protection scope of the present utility model.

In this embodiment, referring to fig. 2, 6 and 7, the mounting seat 11 includes a first mounting member 111 and a second mounting member 112, the first mounting member 111 has a receiving cavity 113 therein, one end of the receiving cavity 113 has an opening, and the second mounting member 112 is connected to the first mounting member 111 and closes the opening; the transmission mechanism 13 is located in the accommodating cavity 113, one end of the transmission mechanism 13 passes through the second mounting piece 112 and is located on the outer side of the accommodating cavity 113 so as to be connected with the driving mechanism to drive the transmission mechanism 13 to operate, one end of the expanding and contracting piece 12 is located in the accommodating cavity 113, the other end of the expanding and contracting piece 12 passes through the first mounting piece 111 to extend outwards, and the first mounting piece 111, the second mounting piece 112 and the expanding and contracting piece 12 are coaxially arranged.

In this embodiment, the mounting seat 11 includes a first mounting member 111 and a second mounting member 112, the first mounting member 111 has a receiving cavity 113 therein, one end of the expansion member 12 is located in the receiving cavity 113, the other end of the expansion member 12 extends outwards through the first mounting member 111, the transmission mechanism 13 is located in the receiving cavity 113, and one end of the transmission mechanism 13 is located outside the receiving cavity 113 through the second mounting member 112. The first mounting piece 111 and the second mounting piece 112 are mounted in a connecting manner so as to facilitate the assembly of the expansion and contraction piece 12 and the transmission mechanism 13 into the accommodating cavity 113. The part of the expansion and contraction piece 12 and the part of the transmission mechanism 13 are arranged in the accommodating cavity 113, so that the whole structure of the clamp is more simplified, and the volume of the clamp is reduced; such an arrangement can protect the expansion and contraction member 12 and the transmission mechanism 13 from collision damage relative to an embodiment in which the accommodation chamber 113 is not provided and the expansion and contraction rod 121 and the transmission mechanism 13 are provided at other positions of the mount 11.

In a preferred embodiment of the present utility model, referring to fig. 2, the first mounting member 111 and the second mounting member 112 are connected by a bolt 114, and the bolt 114 penetrates the second mounting member 112 and is fixed to the first mounting member 111.

In another embodiment, the first mount 111 is threadably coupled to the second mount 112.

In yet another embodiment, the first mount 111 is welded to the second mount 112.

It should be noted that, the specific connection manner of the first mounting member 111 and the second mounting member 112 is not limited in the present utility model, and in practical application, a person skilled in the art may set the specific connection manner of the first mounting member 111 and the second mounting member 112 according to actual needs. The implementation forms of the embodiments described above should not be taken as limiting the scope of the utility model. Of course, it is preferable that the first mounting member 111 and the second mounting member 112 are detachably connected, so that the disassembly is facilitated for maintenance.

In a preferred embodiment of the present utility model, referring to fig. 10, 11 and 12 simultaneously, the expansion and contraction member 12 includes a plurality of expansion and contraction rods 121, and the plurality of expansion and contraction rods 121 are uniformly distributed circumferentially around the axis of the first mounting member 111.

The expansion and contraction rod 121 includes a connection portion 1211 and an abutment portion 1212, the abutment portion 1212 being perpendicular to the connection portion 1211, and the abutment portion 1212 being insertable into a central hole of the cylindrical winding core.

The connecting portion 1211 is located in the accommodating cavity 113, a first end of the abutting portion 1212 is connected to a first end of the connecting portion 1211, a second end of the abutting portion 1212 extends outward through the first mounting piece 111, a second end of the connecting portion 1211 extends outward in a radial direction of the first mounting piece 111, the connecting portion 1211 is fixed relatively to the first mounting piece 111 in an axial direction of the first mounting piece 111, and the connecting portion 1211 is movable relative to the first mounting piece 111 in the radial direction of the first mounting piece 111; the transmission mechanism 13 is connected to the connection portion 1211, and is capable of driving the connection portion 1211 to move in the radial direction of the first mounting member 111 with respect to the first mounting member 111. When the transmission mechanism 13 drives the connecting portion 1211 to move along the radial direction of the first mounting member 111, the abutting portion 1212 moves along with the connecting portion, so that the expansion and contraction rods 121 move towards each other or move away from each other, and the outer diameter of the expansion and contraction member 12 is changed.

With such arrangement, the structure is simple, and the connection portion 1211 and the first mounting member 111 form a circumferential limit relationship while being convenient to use, so that the movement of the expansion and contraction rod 121 is more stable.

In another embodiment, the expanding and contracting member 12 includes a plurality of expanding and contracting rods 121, the plurality of expanding and contracting rods 121 are uniformly distributed circumferentially around the axis of the mounting seat 11, the expanding and contracting rods 121 are rod bodies vertically arranged, a first end of each rod body can move relative to the mounting seat 11 along the radial direction of the mounting seat 11, a second end of each rod body is perpendicular to the mounting seat 11 and extends in a direction away from the mounting seat 11, and the transmission mechanism 13 is connected with the first end of each rod 121 and can drive the expanding and contracting rods 121 to move along the radial direction of the mounting seat 11.

It should be noted that, the specific structure of the expansion and contraction member 12 is not limited in the present utility model, and in practical application, a person skilled in the art may set the specific structure of the expansion and contraction member 12 according to actual needs. The specific implementation of the expansion and contraction member 12 in the above-described embodiments should not limit the scope of the present utility model.

In a preferred embodiment of the present utility model, with continued reference to fig. 12, a radial limiting groove 1133 is provided on a cavity wall in the accommodating cavity 113, the radial limiting groove 1133 extends along a radial direction of the first mounting member 111, the connecting portion 1211 is located in the radial limiting groove 1133, the connecting portion 1211 can move along a length direction of the radial limiting groove 1133, and the radial limiting groove 1133 can limit the connecting portion 1211 to move along a circumferential direction of the first connecting member.

By arranging the radial limiting groove 1133 on the cavity wall of the accommodating cavity 113 and positioning the connecting part 1211 in the radial limiting groove 1133, the radial limiting groove 1133 limits the movement of the expansion and contraction rod 121 in the axial direction, so that the expansion and contraction rod 121 can only move along the radial direction of the first connecting piece, the expansion and contraction piece 12 is prevented from rotating, and the application is more convenient. In addition, by adopting such a setting mode, the radial limit groove 1133 is communicated with the accommodating cavity 113, and the first mounting piece 111 with the accommodating cavity 113 and the radial limit groove 1133 can be directly obtained through injection molding, so that the production and the manufacturing are convenient, and the cost is low.

In another embodiment, radial limiting plates extending in the radial direction of the first mounting member 111 may be provided in the accommodating chamber 113, and the number of the radial limiting plates is two, and the two radial limiting plates are respectively located at two sides of the connecting portion 1211 and are disposed closely to the connecting portion 1211 to limit the movement of the connecting portion 1211 in the circumferential direction of the first mounting member 111.

It should be noted that, the limiting structures of the expansion and contraction rod 121 and the first mounting piece 111 are not limited in the present utility model, so long as the expansion and contraction rod 121 can move along the radial direction of the first mounting piece 111 and cannot move along the circumferential direction of the first mounting piece 111, in practical application, a person skilled in the art can set the limiting structures of the expansion and contraction rod 121 and the first mounting piece 111 according to actual needs. The specific implementation forms of the embodiments described above should not be construed as limiting the scope of the utility model.

In a preferred embodiment of the present utility model, please continue to refer to fig. 11, the cross section of the abutting portion 1212 is an arc ring, and the abutting portions 1212 of the expansion and contraction rods 121 are formed with the first through holes 122 in a surrounding manner.

The cross section of the abutting part 1212 is provided with an arc-shaped ring, the outer wall of the arc-shaped ring can be tightly contacted with the inner wall of the central hole of the cylindrical winding core, so that the abutting effect can be improved, and the damage to the cylindrical winding core can be avoided; in addition, the first through hole 122 is formed in the expanding and contracting piece 12, and the welding needle or the thimble and other structures are conveniently inserted, so that the centering fixture can be simultaneously applied to a plurality of procedures such as welding of the positive/negative electrode current collecting disc, rubberizing of the positive electrode, shell entering and the like, and only the cylindrical winding core centering fixture 1 and the cylindrical winding core fixed by the cylindrical winding core centering fixture need to be synchronously transferred during the procedure replacement, so that a new fixture does not need to be replaced, the centering fixture is more convenient to use, and the cost can be saved and the production efficiency can be improved.

In an embodiment of the present utility model, referring to fig. 15, the second mounting member 112 is provided with a second through hole 1122, and the second through hole 1122 is coaxially disposed and communicated with the first through hole 122.

The second through hole 1122 is formed in the second mounting member 112, so that the welding pin or the ejector pin can be conveniently inserted into the first through hole 122 through the second through hole 1122, and the cylindrical roll core centering fixture 1 is further suitable for different production procedures, the production takt is accelerated, and the production efficiency is improved.

In a preferred embodiment of the present utility model, referring to fig. 10 and 13 to 15, the transmission mechanism 13 includes an annular turntable 131 and a transmission pin 132.

The annular turntable 131 and the first mounting piece 111 are coaxially arranged, the annular turntable 131 is fixed relative to the first mounting piece 111 in the radial direction of the annular turntable 131, the annular turntable 131 can rotate relative to the first mounting piece 111, one end of the transmission pin 132 is connected with the annular turntable 131, the second mounting piece 112 is provided with a circumferential driving groove 1121, the other end of the transmission pin 132 penetrates through the circumferential driving groove 1121 and is positioned at the outer side of the accommodating cavity 113, the transmission pin 132 can move in the circumferential driving groove 1121 so as to drive the annular turntable 131 to rotate, the annular turntable 131 is provided with a radial driving groove 1311, the second end of the connecting part 1211 is connected with a transmission column 1213, the transmission column 1213 is positioned in the radial driving groove 1311 and can move along the length direction of the radial driving groove 1311, and the radial driving groove 1311 rotates and drives the transmission column 1213, the connecting part 1211 and the abutting part 1212 to move along the radial direction of the first mounting piece 111 in the rotating process.

It should be noted that, the second end of the radial driving groove 1311 is closer to the center of the annular turntable 131 than the first end, that is, the distance from the first end of the radial driving groove 1311 to the center of the annular turntable 131 is greater than the distance from the second end of the radial limiting groove 1311 to the center of the annular turntable 131, so that the radial driving groove 1311 moves relatively to the driving post 1213 when rotating, so that the driving post 1213 moves along the radial limiting groove 1311, and synchronously drives the connecting end 1211 and the abutting end 1212 to move along the radial direction of the first mounting member 111.

In actual use, the manual or driving member drives the driving pin 132 to move in the circumferential driving slot 1121, and the driving pin 132 drives the annular turntable 131 to rotate, so that the driving post 1213 moves along the radial direction of the first mounting member 111 with the expanding and contracting rod 121 under the action of the radial driving slot 1311, and further changes the outer diameter of the expanding and contracting member 12, so that the expanding and contracting member can be abutted against and fastened to the cylindrical winding core or separated from the cylindrical winding core.

With such arrangement, the structure is simple, the assembly and use are convenient, and the state of the expansion and contraction member 12 is convenient to control. When the first mounting member 111 and the second mounting member 112 are connected by the bolt 114, referring to fig. 13 and 14, a bolt moving groove 1312 is provided in the annular turntable 131, and the bolt 114 penetrates the bolt moving groove 1312 and can move in the bolt moving groove 1312. This arrangement can ensure smooth rotation of the annular turntable 131.

In another embodiment, the transmission mechanism 13 includes an annular turntable 131 and a transmission pin 132 connected to each other, a cam portion is formed on an inner wall of the annular turntable 131, a second end of the connecting portion 1211 abuts against the inner wall of the annular turntable 131, a circumferential driving groove 1121 is formed in the second mounting member 112, one end of the transmission pin 132 passes through the circumferential driving groove 1121 and is located at an outer side of the accommodating cavity 113, the transmission pin 132 can move in the circumferential driving groove 1121, so as to drive the annular turntable 131 to rotate, and the connecting portion 1211 and the abutting portion 1212 simultaneously move along a radial direction of the first mounting member 111 in a process of abutting and relatively moving the second end of the connecting portion 1211 with the cam portion during rotation of the annular turntable 131.

It should be noted that, the specific structure of the transmission mechanism 13 is not limited in the present utility model, and in practical application, a person skilled in the art may set the specific structure of the transmission mechanism 13 according to actual needs. The specific implementation forms of the above embodiments should not be construed as limiting the scope of the utility model.

In a preferred embodiment of the present utility model, referring to fig. 8, 9, 10 and 13, the transmission mechanism 13 further includes a rebound assembly 133 disposed within the receiving chamber 113, wherein the rebound assembly 133 is capable of returning the expansion and contraction member 12 from the contracted state to the expanded state after the transmission mechanism 13 is unstressed.

The rebound assembly 133 is arranged to enable the expansion and contraction member 12 to be kept in an expansion state, when the transmission mechanism 13 is stressed to drive the expansion and contraction member 12 to be in a contraction state, the rebound assembly 133 is compressed to store force, after the transmission mechanism 13 is not stressed any more, the rebound assembly 133 drives the annular rotary disc 131 to reversely rotate, the rebound assembly 133 releases the stored force to enable the expansion and contraction member 12 to return to the original position to restore the expansion state, and in such a setting mode, the rebound assembly 133 can enable the expansion and contraction member 12 to tightly support and fix the cylindrical winding core without additionally arranging a locking mechanism, so that the expansion and contraction member is simple in structure and convenient to apply.

In a preferred embodiment of the present utility model, and with continued reference to fig. 8, 9, 10 and 13, the rebound assembly 133 comprises a return spring 1331 and a stop 1332, the stop 1332 being coupled to the annular turntable 131.

The cavity wall of the accommodating cavity 113 is provided with a limiting groove 1131, two limiting ends 1132 are respectively formed at two end groove walls of the limiting groove 1131 in the length direction, a reset spring 1331 and a limiting piece 1332 are located in the limiting groove 1131, the limiting piece 1332 can move along the length direction of the limiting groove 1131, the limiting piece 1332 is abutted with one end of the reset spring 1331, the other end of the reset spring 1331 is abutted with one limiting end 1132, and the limiting piece 1332 is abutted with the other limiting end 1132 under the action of the reset spring 1331.

The rebound assembly 133 is provided with a return spring 1331 and a limiting piece 1332, and has the advantages of simple structure, convenience in assembly and use, low cost and small volume.

In a preferred embodiment, with continued reference to fig. 9 and 13, a stop slot 1131 may be provided in the top chamber wall of the receiving chamber 113 with a stop 1332 located on the top wall of the annular dial 131.

In another embodiment, the limiting groove 1131 is provided on a side wall of the receiving cavity 113, and the limiting piece 1332 is located on an outer side wall of the annular turntable 131.

It should be noted that the present utility model does not set any limitation on the positions of the limiting groove 1131 and the limiting piece 1332, and in practical application, a person skilled in the art may set the positions of the limiting groove 1131 and the limiting piece 1332 according to the actual needs. The specific arrangement of the positions of the limiting groove 1131 and the limiting piece 1332 in the above embodiment should not limit the protection scope of the present utility model.

In a preferred embodiment of the present utility model, the rebound assemblies 133 are provided in groups and are evenly disposed circumferentially about the axis of the annular turntable 131.

The circumference evenly sets up multiunit resilience subassembly 133, can provide the resilience force in many positions evenly to improve the tight effect of support of expanding and contracting piece 12, improve the fastening effect of anchor clamps to the cylinder core of rolling up, in addition, also reset more easily, facilitate the use.

In the preferred embodiment of the present utility model, the number of rebound assemblies 133 is the same as the number of the expansion and contraction rods 121, and the rebound assemblies 133 and the expansion and contraction rods 121 are circumferentially spaced apart. It provides more uniform resilience and better effect.

In a preferred embodiment of the present utility model, referring to fig. 3 and 5, the first mounting member 111 is provided with a positioning member 14, the positioning member 14 is located on a side of the first mounting member 111 away from the second mounting member 112, and the positioning member 14 is used for positioning a current collecting plate (not shown in the drawings).

The locating piece 14 is arranged on the first mounting piece 111, and the locating piece 14 is used for mounting and locating the current collecting disc, so that the current collecting disc and the cylindrical coil core can be located simultaneously, the cylindrical coil core and the current collecting disc are kept coaxially, the quick locating of the cylindrical coil core and the current collecting disc is realized, the current collecting disc and the lugs of the cylindrical coil core are welded conveniently, and the use is more convenient.

In a preferred embodiment of the present utility model, referring to fig. 5, the positioning member 14 is a positioning convex ring, and the positioning convex ring is coaxially disposed with the first mounting member 111 and sleeved on the outer side of the expansion member 12, and a circumferential limiting protrusion 141 protrudes upward from the positioning convex ring.

The collecting tray can be sleeved on the positioning convex ring, and the circumferential limiting protrusions 141 can be clamped into the grooves of the collecting tray so as to position the collecting tray. Therefore, in the process of welding the cylindrical winding core and the current collecting disc, the current collecting disc is prevented from rotating, and the welding efficiency and the welding quality are improved to a certain extent.

In another embodiment, the positioning member 14 comprises a plurality of positioning projections distributed circumferentially about the axis of the first mounting member 111 and located outside the expansion and contraction member 12.

It should be noted that, the specific structure of the positioning element 14 is not limited in any way, and in practical application, a person skilled in the art can set the specific structure of the positioning element 14 according to actual needs. The specific implementation forms of the embodiments described above should not be construed as limiting the scope of the utility model.

In a preferred embodiment of the present utility model, referring to fig. 3 and 4, the first mounting member 111 is provided with a plurality of guide members 15, and the plurality of guide members 15 are uniformly disposed around the axis of the first mounting member 111 and located outside the expansion member 12, so that the guide members 15 can guide the battery case when the battery case is sleeved.

The first mounting member 111 is provided with the guide member 15 to guide the battery case when the battery case is assembled, so that the battery case is positioned quickly, and the assembly efficiency is improved.

In a preferred embodiment of the present utility model, and with continued reference to fig. 4, a guide ramp 151 is provided on one side of the guide 15 adjacent the expansion and contraction member 12.

The arrangement of the guide inclined surface 151 enables the battery shell to be in butt joint, so that the battery shell can be conveniently inserted into a guide area formed by the guide pieces 15, the difficulty of butt joint guide is reduced, and the application is convenient.

In a preferred embodiment of the present utility model, referring to fig. 2 and 3, the mounting seat 11 is provided with a plurality of hollow portions 115, the hollow portions 115 penetrate through the mounting seat 11 along the thickness direction of the mounting seat 11, and the plurality of hollow portions 115 are uniformly distributed around the axial line of the mounting seat in the circumferential direction.

The hollowed-out part 115 is arranged, so that a welding needle can conveniently weld the current collecting disc with the lug of the cylindrical winding core through the hollowed-out part 115, and the current collecting disc and the cylindrical winding core can be welded only by using the cylindrical winding core centering fixture 1 provided by the utility model in combination with a welding device, so that the use is convenient.

In addition, the utility model also protects a conveying jig, which comprises the cylindrical roll core centering fixture 1.

Specifically, referring to fig. 16, the conveying jig of the present utility model includes a cylindrical winding core centering jig 1 and a conveying base 2, the conveying base 2 being capable of carrying the cylindrical winding core centering jig 1 and being capable of restricting the cylindrical winding core centering jig 1 from moving in its circumferential and radial directions relative to the conveying base 2.

The conveying seat 2 is used for bearing and fixing the cylindrical roll core centering fixture 1, so that the cylindrical roll core centering fixture 1 and the cylindrical roll core can be conveyed by matching with a conveying mechanism (a conveyor belt, a track and the like) or a transferring mechanism, the cylindrical roll core centering fixture 1 and the cylindrical roll core can be kept coaxially in the conveying process, the cylindrical roll core is conveniently positioned on a station of a new process, and the cylindrical roll core centering fixture is convenient to use.

In a preferred embodiment of the present utility model, referring to fig. 17, a fixing cavity 24 is provided on the top surface of the delivery base 2, the mounting base 11 is located in the fixing cavity 24, a positioning hole 25 is provided in the fixing cavity 24, a positioning structure (for example, a head of a bolt 114 or a positioning post provided on the bottom wall of the mounting base 11) is provided at the bottom of the mounting base 11, and the positioning structure is inserted into the positioning hole 25, so that the movement (including the movement along the circumferential direction and the movement along the radial direction of the delivery base 2) of the cylindrical core centering fixture 1 relative to the delivery base 2 can be limited.

In a preferred embodiment of the present utility model, referring to fig. 17, a driving hole 21 is formed in the conveying seat 2, and the driving hole 21 is used for accommodating a driving member, so that the driving member drives the transmission mechanism 13 to operate through the driving hole 21.

The drive hole 21 is provided to facilitate the docking of a driving member (e.g., an electric push rod or a manual hand push rod) with the drive pin 132 through the drive hole 21 to push the drive pin 132 to move in the circumferential drive slot 1121 and rotate the annular turntable 131 for convenient application.

In a preferred embodiment of the present utility model, referring to fig. 16, a receiving hole 22 is formed in the conveying seat 2, and the receiving hole 22 is used for fixedly placing an induction chip matched with the cylindrical battery cell.

The accommodating hole 22 is arranged to accommodate the induction chip, the induction chip is a chip with cylindrical battery cell information, and the induction chip can be used for rapidly identifying the cylindrical battery cell and positioning the position of the conveying seat 2 through the identified information by induction equipment, so that the control is convenient.

In a preferred embodiment of the present utility model, referring to fig. 17, a third through hole 23 is provided at the center of the delivery base 2, and the third through hole 23 is in communication with the second through hole 1122 and the first through hole 122 and is coaxially provided.

The third through hole 23 is formed in the center of the conveying seat 2, so that the welding needle and the thimble can be inserted into the second through hole 1122 and the first through hole 122 through the third through hole 23, and when the welding needle and the thimble are transferred to a processing station, the conveying seat 2 is not required to be separated from the cylindrical roll core centering fixture 1, and the conveying fixture is directly abutted with a processing device of the processing station, so that the working procedure is simplified, the abutting difficulty is reduced, and the production efficiency is improved.

Thus far, the technical solution of the present utility model has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present utility model is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present utility model, and such modifications and substitutions will fall within the scope of the present utility model.

Claims

1. The cylindrical roll core centering fixture is characterized by comprising a mounting seat, and an expanding and contracting piece and a transmission mechanism which are mounted on the mounting seat;

2. The cylindrical winding core centering fixture of claim 1, wherein the mount comprises a first mount and a second mount,

3. The cylindrical core centering fixture of claim 2, wherein said telescoping member comprises a plurality of telescoping rods circumferentially and uniformly distributed about an axis of said first mounting member,

4. The cylindrical winding core centering fixture as claimed in claim 3, wherein the transmission mechanism comprises an annular turntable and a transmission pin,

5. The cylindrical roll core centering fixture of claim 4, wherein the transmission mechanism further comprises a rebound assembly disposed within the receiving cavity, the rebound assembly being capable of returning the expanding and contracting member from the contracted state to the expanded state upon the transmission mechanism being unstressed.

6. The cylindrical winding core centering fixture of claim 5, wherein said rebound assembly comprises a return spring and a stop, said stop being coupled to said annular turntable,

7. The cylindrical winding core centering fixture of claim 2, wherein the first mounting member is provided with a positioning member located on a side of the first mounting member remote from the second mounting member, the positioning member being configured to position the current collecting plate.

8. The cylindrical winding core centering fixture according to claim 2, wherein the first mounting member is provided with a plurality of guide members, the plurality of guide members are uniformly arranged circumferentially around the axis of the first mounting member and located outside the expanding and contracting member, and the guide members can guide the battery case when the battery case is sleeved.

9. The cylindrical roll core centering fixture of claim 3, wherein the cross section of the abutting portion is an arc-shaped ring, and a plurality of the abutting portions of the plurality of expansion and contraction rods are formed with first through holes in a surrounding manner.

10. The cylindrical roll core centering fixture of claim 9, wherein a second through hole is provided in the second mounting member, the second through hole being coaxially disposed with and in communication with the first through hole.

11. The cylindrical roll core centering fixture according to any one of claims 1 to 10, wherein a plurality of hollowed-out portions are arranged on the mounting base, the hollowed-out portions penetrate through the mounting base in the thickness direction of the mounting base, and the hollowed-out portions are uniformly distributed around the axial circumference of the mounting base.

12. A delivery jig comprising a delivery seat and the cylindrical core centering fixture of any one of claims 1 to 11, the delivery seat being capable of carrying the cylindrical core centering fixture and being capable of restricting movement of the cylindrical core centering fixture relative to the delivery seat in a circumferential direction and a radial direction of the delivery seat.

13. The delivery jig of claim 12 wherein the delivery base is provided with a drive aperture for receiving a drive member for operation by the drive Kong Qudong transmission mechanism.

14. The conveying jig of claim 12, wherein the conveying seat is provided with a containing hole, and the containing hole is used for fixedly placing an induction chip matched with the cylindrical battery cell.