WO2023106560A1 - Mandrel unit for secondary battery cell stack manufacturing apparatus - Google Patents

Abstract

A disclosed mandrel unit for a secondary battery cell stack manufacturing apparatus alternately press-holds an anode plate and a cathode plate together with a separator toward a stack table during the manufacture of a cell stack, comprises first and second mandrel assemblies located on both sides of the stack table, and is configured such that, during the manufacture of a cell stack, first and second mandrel bundles and first and second mandrel support frames, from among the components of the first and second mandrel assemblies, reciprocate between an anode plate transfer picker and a cathode plate transfer picker together with the stack table, and first and second mandrel forward and backward driving units and first and second mandrel raising and lowering driving units, from among the components of the first and second mandrel assemblies, do not reciprocate together with the stack table.

Description

Mandrel unit for secondary battery cell stack manufacturing equipment

The present invention (Disclosure) relates to a mandrel unit for a cell stack manufacturing apparatus of a secondary battery capable of pressurizing and gripping a negative electrode plate, a positive electrode plate, and a separator stacked on a stack table to prevent collapse during cell stack manufacturing.

Here, background art related to the present invention is provided, and they do not necessarily mean prior art (This section provides background information related to the present disclosure which is not necessarily prior art).

In general, a chemical battery is a battery composed of a pair of electrodes of a negative electrode and a positive electrode and an electrolyte, and the amount of energy that can be stored varies depending on the materials constituting the electrode and the electrolyte.

These chemical batteries are divided into primary batteries, which are used only for one-time discharge, and secondary batteries, which can be reused through repeated charging and discharging.

Secondary batteries are applied to various technical fields throughout the industry due to the above-described repetitive charging and discharging. For example, secondary batteries are not only widely used as an energy source for advanced electronic devices such as wireless mobile devices, but are also being proposed as a way to solve air pollution from conventional gasoline and diesel internal combustion engines using chemical rock fuel. It is attracting attention as an energy source for automobiles and the like.

As anyone knows, a secondary battery is a method in which negative and positive plates are placed on a separator and rolled to form a jelly-roll, which is a medium-large secondary battery having more electric capacity. In the case of , a method of manufacturing by stacking a negative electrode plate, a positive electrode plate, and a separator in an appropriate order is widely used.

In addition, there are several methods of manufacturing a secondary battery cell stack in a stacked manner, but among them, in the Z-stacking method, the separator is folded in a zigzag pattern, and a negative electrode plate and a positive electrode plate are placed between the separators. They are stacked in alternating inserts.

An example of a device capable of manufacturing a cell stack by the Z-stacking method is 'Korean Patent Registration Publication No. 10-2120403' and 'Korea Patent Registration No. A 'cell stack manufacturing apparatus for a secondary battery' disclosed in Patent Registration No. 10-2320868 may be mentioned.

However, in the 'apparatus for manufacturing a cell stack for a secondary battery' disclosed in 'Korean Patent Registration No. 10-2120403' and 'Korean Patent Registration No. 10-2320868', the weight of the mandrel assembly (clamping means) is heavy. there was.

In other words, during cell stack manufacturing, the mandrel assembly rotates left and right along with the stack table by 45 degrees, moving the mandrel forward and backward toward the stack table and lifting and pressing the negative electrode plate, positive electrode plate, and separator toward the stack table side so that the manufactured cell stack does not collapse. At this time, since the mandrels are individually connected to the forward and backward motors, and the forward and backward servomotors and the lifting servomotors that lift and operate the mandrels rotate together with the stack table, the weight of the mandrel assembly is heavy, which increases the rotation speed of the stack table. However, there has been another problem in that the speed of cell stack production cannot be increased.

An object of the present invention (Disclosure) is to provide a mandrel unit for a cell stack manufacturing apparatus of a secondary battery that can significantly reduce the weight of components that are turned toward the negative plate delivery picker and the positive plate delivery picker during stack cell manufacturing.

In addition, the problem to be solved by the present invention is not limited to the technical problems mentioned above, and other technical problems not mentioned are clearly understood by those of ordinary skill in the art to which the present invention belongs from the description below. It could be.

This section provides a general summary of the disclosure and is not a comprehensive disclosure of its full scope or all of its features).

In order to solve the above problems, according to one aspect of the various aspects describing the present invention, a cell stack of a secondary battery in which a negative electrode plate and a positive electrode plate are alternately pressed and held together with a separator toward the stack table during manufacture of the cell stack. A mandrel unit for manufacturing equipment, located between a negative plate delivery picker for loading negative plates and a positive plate delivery picker for loading positive plates, reciprocating between the two, installed on one side of both sides of the stack table facing the negative plate delivery picker a first mandrel assembly; and a second mandrel assembly installed on the other side of the stack table facing the positive plate delivery picker, wherein each of the first and second mandrel assemblies includes first and second mandrels of which two form a pair. bundle; First and second mandrel support frames respectively supporting the first and second mandrel bundles; First and second mandrel forward and backward driving units for moving the first and second mandrel assemblies forward and backward, respectively; and first and second mandrel lifting actuators for lifting and moving the first and second mandrel assemblies, respectively, wherein the first and second mandrel assemblies and the first and second mandrels are provided during manufacture of the cell stack. The support frame reciprocally rotates the negative plate transfer picker and the positive electrode transfer picker together with the stack table, and the first and second mandrel forward/backward drivers and the first and second mandrel lift drivers reciprocate and rotate together with the stack table. The first mandrel lifting driver supports the stack table in a reciprocating and pivoting manner, and the first mandrel lifting servomotor is fixedly installed on one end of the mounting frame on which the tilting drive motor for reciprocating and turning the stack table is installed. ; a first lifting ball screw shaft and a first lifting ball screw nut converting the rotational torque of the first mandrel lifting servo motor into linear motion; And connecting the first lifting ball screw nut and the first mandrel support frame, converting the linear motion of the first lifting ball screw nut into lifting motion to lift the first mandrel support frame on which the first mandrel bundles are supported. A second mandrel lifting servo fixedly installed on one end of the mounting frame so as not to interfere with the tilting driving motor and the first mandrel lifting servomotor. motor; a second lifting ball screw shaft and a second lifting ball screw nut converting the rotational torque of the second mandrel lifting servo motor into linear motion; And connecting the second elevating ball screw nut and the second mandrel support frame, converting the linear motion of the second elevating ball screw nut into an elevating motion to elevate the second mandrel support frame on which the second mandrel bundles are supported. It includes; a second link member that operates.

In the mandrel unit for a cell stack manufacturing apparatus of a secondary battery according to one of the various aspects of the present invention, the first and second mandrel support frames extend along the longitudinal direction of the stack table. First and second lifting plates having a vertical plate shape, wherein the first lifting plate is installed to be movable on one side of a tilting frame supporting the stack table, and the second lifting plate is movably installed on the tilting frame supporting the stack table. First and second mandrel forward and backward rails installed to be liftable on the other side of the frame and slidably installed on the upper ends of the first and second lift plates, respectively, the first mandrel bundles and the second mandrel bundles It is formed along the longitudinal direction of the first and second lifting plates, and the other side of the first lifting plate opposite to one side of the tilting frame and one side of the second lifting plate opposite to the other side of the tilting frame are horizontal First and second supporting plates provided in a plate shape and extending along the longitudinal direction of the first and second lifting plates are installed.

In the mandrel unit for a cell stack manufacturing apparatus of a secondary battery according to one of the various aspects of the present invention, the first mandrel bundles move forward and backward with the stack table interposed therebetween. first sliders each slidably mounted on a rail; And a first mandrel provided in a bar shape extending horizontally and installed on the first slider via a first mandrel block to direct the stack table, wherein the second mandrel bundles are interposed between the stack table a second slider mounted on the second mandrel to be slidably mounted on the forward and backward rails of the second mandrel; and a second mandrel provided in a horizontally extended bar shape and installed on the second slider via a second mandrel block so as to direct the stack table.

In the mandrel unit for a cell stack manufacturing apparatus of a secondary battery according to any one of the various aspects described in the present invention, the first mandrel assemblies and the second mandrel assemblies are respectively a first interlocking belt and a first interlocking belt 2 interlocking belts interlockingly connected, the first interlocking belt rotatably spanning a pair of first belt pulleys provided at one end side and the other end side of the first supporting plate, and the second interlocking belt The belt is rotatably spanned over a pair of second belt pulleys provided at one end side and the other end side of the second support plate, and the first slider of one of the first mandrel assembly and the other of the first mandrel assembly The first slider of is connected via a connecting bracket to one side and the other straight part of the first interlocking belt, respectively, and the second slider of one of the second mandrel bundles and the second slider of the other second mandrel bundle Each is connected to one side and the other straight part of the second interlocking belt through a connecting bracket.

In the mandrel unit for a cell stack manufacturing apparatus of a secondary battery according to any one of the various aspects described in the present invention, the first mandrel forward and backward driving unit is a mounting unit supporting the stack table to reciprocate and pivot. A first mandrel forward and backward servo motor fixedly installed on the upper part of the other end of the frame; a first forward and backward ball screw shaft and a first forward and backward ball screw nut converting the rotational torque of the first mandrel forward and backward servomotor into linear motion; And a first connecting member connecting the first forward and backward ball screw nut and any one of the first mandrel bundles, wherein the second mandrel forward and backward driving unit does not interfere with the first mandrel forward and backward servomotor. a second mandrel forward/backward servomotor fixedly installed on the top of the other end of the mounting frame; a second forward and backward ball screw shaft and a second forward and backward ball screw nut converting the rotational torque of the second mandrel forward and backward servomotor into linear motion; And a first connecting member for connecting the second forward and backward ball screw nut and any one of the second mandrel bundles.

In the mandrel unit for a cell stack manufacturing apparatus of a secondary battery according to any one of the various aspects of the present invention, the first and second forward and backward ball screw shafts respectively rotate in the longitudinal direction of the stack table. doedoe extending horizontally along the mounting frame, rotatably installed at the top of the other end of the mounting frame so as not to interfere with each other, and one end of the first and second forward and backward ball screw shafts, respectively, via a power transmission device, the first and second It is connected to a mandrel forward and backward servomotor, and first and second forward and backward ball screw nuts are respectively fitted to the first and second forward and backward ball screw shafts, and adjacent to the first and second forward and backward ball screw nuts. First and second forward and backward toggle brackets extending horizontally toward the first and second mandrel bundles are mounted.

In the mandrel unit for a cell stack manufacturing apparatus of a secondary battery according to one of the various aspects of the present invention, the first and second connecting members have upper ends of the first and second connecting members, respectively. First and second forward and backward wing brackets connected to any one of the first and second mandrel bundles facing the extended end of the forward and backward toggle bracket; and first and second semi-cylindrical first and second forward and backward toggle brackets installed at the lower end of each of the first and second forward and backward wing brackets and connecting the first and second forward and backward wing brackets and the first and second forward and backward toggle brackets. and a second forward and backward rotation guide, wherein the first forward and backward rotation guide is formed to have a cross section curved to one side, and the second forward and backward rotation guide has a cross section curved to the other side. Is formed, on the outer surface of the first and second forward and backward rotation guides, the first and second forward and backward rotation rails are integrally formed to protrude along the curved arcs of the first and second forward and backward rotation guides, The first forward and backward rotation rail is slidably interposed between first forward and backward rollers provided as a pair at the extended end of the first forward and backward toggle bracket, and the second forward and backward rotation rail is provided as a pair to the second forward and backward rotation rail. It is slidably interposed between second forward and backward rollers provided as a pair at the extended end of the Jin toggle bracket.

In the mandrel unit for a cell stack manufacturing apparatus of a secondary battery according to one of the various aspects of the present invention, the first and second lifting ball screw shafts are respectively along the longitudinal direction of the stack table. Extending horizontally, rotatably installed on one end of the mounting frame so as not to interfere with each other, and one end side of the first and second lifting ball screw shafts via a coupling, respectively, the first and second mandrel lifting servos The first and second lifting ball screw nuts are connected to the motor, and the first and second lifting ball screw nuts are fitted to the first and second lifting ball screw shafts, respectively, and the first and second mandrel supports are adjacent to the first and second lifting ball screw nuts. First and second lifting toggle brackets extending horizontally toward the frame are mounted.

In the mandrel unit for an apparatus for manufacturing a cell stack of a secondary battery according to one of the various aspects described in the present invention, the first link member includes: a first main rod; a first driven rod; a first lift wing bracket that transfers the linear motion of the first lift toggle bracket to the first main rod; a first yoke cam block transmitting the lifting movement of the first driven rod to the first mandrel support frame; and a first link frame supporting the first main rod, the first driven rod, and the first elevating vane bracket, wherein the second link member includes: a second main rod; a second driven rod; a second lift wing bracket that transfers the linear motion of the second lift toggle bracket to the second main rod; a second yoke cam block transmitting the lifting movement of the second driven rod to the second mandrel support frame; And a first link frame supporting the second main rod, the second driven rod, and the second lifting vane bracket, wherein the first and second link frames are of the first and second mandrel support frames. It is installed on one side and the other side of the tilting frame supporting the stack table so as not to interfere with the elevation.

In the mandrel unit for a cell stack manufacturing apparatus of a secondary battery according to one of the various aspects of the present invention, the first and second lifting wing brackets are linearly moved along the longitudinal direction of the stack table. Possibly installed on the first and second link frames, respectively, first and second lift rails are installed on the outer surfaces of the first and second link frames along the longitudinal direction of the stack table, and the first and second lift rails are installed. First and second lifting rail blocks slidably fitted into the first and second lifting rails are installed on the lower side of the inner surface of the first and second lifting wing brackets facing the second lifting rail, respectively. First and second lifting and rotating guides having a semi-cylindrical shape connected to the first and second lifting toggle brackets are installed on upper sides of the first and second lifting wing brackets, respectively.

In the mandrel unit for a cell stack manufacturing apparatus of a secondary battery according to one of the various aspects of the present invention, the first lifting and rotating guide is formed to have a cross section curved to one side, The second lifting rotation guide is formed to have a cross section curved to the other side, and on the outer surfaces of the first and second lifting rotation guides along the curved arcs of the first and second lifting rotation guides, respectively. First and second elevation rotation rails are integrally formed to protrude, the first elevation rotation rail is interposed between first elevation rollers provided as a pair at the extended end of the first elevation toggle bracket, and the second elevation rotation rail is provided as a pair. The rotating rail is slidably interposed between second lifting rollers provided as a pair at an extension end of the second lifting toggle bracket.

In the mandrel unit for manufacturing a cell stack of a secondary battery according to one of the various aspects of the present invention, each of the first and second main rods is horizontal along the longitudinal direction of the stack table. It is provided to extend, and each of the first and second driven rods is provided in an "L" shape, and the first and second main rods have one end sides of the first hinge pin, respectively, respectively, through the first hinge pin. and connected to the second lift wing bracket so as to be able to pivot in the vertical direction, and the first and second driven rods pivot in the vertical direction to the first and second link frames, respectively, via a second hinge pin, respectively. Possibly connected, but the extension ends of the first and second main rods are pivotably connected to the lower sides of the first and second driven rods, respectively, via a third hinge pin, respectively, and the first and second First and second elevating guide rollers are mounted on the upper side of the driven rod, respectively.

In the mandrel unit for a cell stack manufacturing apparatus for a secondary battery according to one of the various aspects of the present invention, the first and second yoke cam blocks support the first and second mandrels, respectively. It is installed under the first and second support plates of the frame, and horizontal first and second yoke long holes extending along the longitudinal direction of the stack table are formed in the first and second yoke cam blocks, respectively. The first elevating guide roller is inserted into the long hole of the first yoke, and the second elevating guide roller is inserted into the long hole of the second yoke.

According to the present invention, since the first mandrel assemblies of two are interlocked through the first interlocking belt, and the second mandrel assemblies of two are interlocked through the second interlocking belt, the first mandrel assemblies And it is possible to provide an effect of reducing the number of first mandrel forward and backward servomotors and second mandrel forward and backward servomotors for operating the second mandrel bundles.

In addition, according to the present invention, since only the first and second mandrel bundles and the first and second mandrel support frames turn toward the negative plate delivery picker and the positive plate delivery picker along the stack table, the weight of the pivoted components can be significantly reduced. Thereby, it is possible to provide an effect of increasing the production speed of the cell stack by greatly increasing the turning speed.

1 is a perspective view schematically showing an apparatus for manufacturing a cell stack of a secondary battery equipped with a mandrel unit according to the present invention.

2 is a view looking at the first mandrel assembly in the negative plate delivery picker shown in FIG. 1;

3 is a view of the second mandrel assembly in the bipolar plate delivery picker shown in FIG. 1;

4 is a view showing the first mandrel lifting driver shown in FIG. 2;

5 is a view showing the second mandrel lifting driver shown in FIG. 3;

6 to 9 are views schematically showing the operating state of the mandrel unit according to the present invention.

Hereinafter, an embodiment in which a mandrel unit for a secondary battery cell stack manufacturing apparatus according to the present invention is implemented will be described in detail with reference to the drawings.

However, the essential (intrinsic) technical idea of the present invention cannot be said to be limited by the embodiments described below, and based on the essential (intrinsic) technical idea of the present invention, a person skilled in the art below It is revealed that the embodiments described in include the range that can be easily proposed as a method of substitution or change.

In addition, since the terms used below are selected for convenience of description, in grasping the essential (intrinsic) technical idea of the present invention, they are not limited to the dictionary meaning and are appropriately interpreted in a meaning consistent with the technical idea of the present invention. It should be.

Among the accompanying drawings, FIG. 1 is a diagram schematically illustrating an apparatus for manufacturing a cell stack for a secondary battery equipped with a mandrel unit according to the present invention.

Referring to FIG. 1, the apparatus 10 for manufacturing a cell stack for a secondary battery related to the present invention is described in 'Korean Patent Publication No. 10-2120403' and 'Korean Patent Publication No. It includes a stack table 20, an electrode plate stacking position adjusting means 30, a tilting driving means 40, and a supporting means 50 having the same or similar structure and function as the apparatus for manufacturing a cell stack for a secondary battery disclosed in 'No. 2320868'. .

In addition, on one side and the other side of the cell stack manufacturing apparatus 10 for secondary batteries related to the present invention, the cells for secondary batteries disclosed in the aforementioned 'Korean Patent Registration No. 10-2120403' and 'Korean Patent Registration No. 10-2320868' Like the stack manufacturing device, the negative plate transfer picker 60 and the positive electrode transfer picker 70 are installed, and the separator supply unit 80 is installed on the upper side.

Here, the stack table 20 allows the negative electrode plate N and the positive electrode plate A to be alternately stacked with the separator S interposed therebetween, and the electrode plate stacking position adjusting means 30 is used to stack the negative electrode plate N and the positive electrode plate A The stack table 20 is movably supported so that the negative plate N and the positive plate A are stacked at the same position regardless of the number of stacking.

The tilting driving means 40 causes the separator S supplied from the upper side of the stack table 20 to be folded in a zigzag shape, and at the same time, the negative electrode plate N and the positive electrode plate A are alternately folded on the separator S folded in a zigzag shape. The stack table 20 and the electrode plate stacking position adjusting means 30 are reciprocally rotated toward the negative plate transfer picker 60 and the positive electrode plate transfer picker 70 so that they are loaded and stacked.

The tilting driving means 40 includes a tilting frame 42 on which the stack table 20 and the electrode plate stacking position adjusting unit 30 are mounted, and the stack table 20 and the electrode plate stacking position adjusting unit together with the tilting frame 42 It includes a tilting drive motor 44 that reciprocates (30) toward the negative plate delivery picker 60 and the positive plate delivery picker 70 side. The supplied separator (S) is folded in a zigzag shape while rotating back and forth between the negative plate delivery picker 60 and the positive plate delivery picker 70 .

In addition, when the separator S supplied from the upper side of the stack table 20 is guided to the negative plate delivery picker 60 by the operation of the tilting drive motor 44, the negative plate delivery picker 60 transfers the negative plate to the separator S (N) is loaded, and on the contrary, when the separator (S) supplied from the upper side of the stack table 20 is guided toward the positive plate delivery picker 70 by the operation of the tilting drive motor 44, the positive plate delivery picker 70 The positive plate (A) is loaded on the separator (S).

The supporting means 50 rotatably supports the tilting frame 42 on which the stack table 20 and the electrode plate stacking position adjusting means 30 are mounted.

The supporting means 50 rotatably supports the tilting frame 42 on which the stack table 20 and the pole plate stacking position adjusting means 30 are mounted, but the mounting frame 52 in which the tilting drive motor 44 is fixedly installed. and first and second support frames 54a and 54b supporting the mounting frame 52 so as to be able to move up and down, and a servomotor 56 for moving the mounting frame 52 up and down.

On the other hand, the mandrel unit 100 according to the present invention is a clamping means constituting the cell stack manufacturing apparatus for a secondary battery disclosed in the aforementioned 'Korean Patent Registration No. 10-2120403' and 'Korean Patent Registration No. 10-2320868'. It has the same action as the stack table 20, the electrode plate stacking position adjusting means 30, and the tilting frame 42 together with the negative plate delivery picker 60 and the positive plate delivery picker 70 while reciprocally turning to the separator (S) Together with the other edge leading to both ends of the negative electrode plate N and one edge leading to both ends of the positive electrode plate A together with the separator S, alternately pressurized and gripped to the stack table 20 side to stack on the stack table 20 The negative electrode plate (N), the positive electrode plate (A), and the separator (S) are prevented from collapsing so that a cell stack (not shown) is manufactured.

However, the mandrel unit 100 according to the present invention is configured differently from the clamping means of the cell stack manufacturing apparatus for a secondary battery disclosed in 'Korean Patent Registration No. 10-2120403' and 'Korean Patent Registration No. 10-2320868'. It is technically characterized in that only a part of the element is provided to reciprocate toward the negative plate delivery picker 60 and the positive plate delivery picker 70, whereby the stack table 20, the electrode plate stacking position adjusting means 30 and the tilting frame 42 ), it is possible to increase the production speed of the cell stack by greatly increasing the rotational speed of the cell stack.

Among the accompanying drawings, FIGS. 2 to 6 are views showing a mandrel unit according to the present invention.

1 to 6, the first mandrel assembly 110a installed on one side of the stack table 20 facing the negative plate delivery picker 60 of the mandrel unit 100 according to the present invention, and the positive plate delivery picker It includes a second mandrel assembly (110b) installed on the other side of the stack table (20) facing the (70).

The first mandrel assembly 110a includes a first mandrel support frame 112a reciprocating along the stack table 20 toward the negative plate delivery picker 60 and the positive plate delivery picker 70, and one side of the stack table 20 It includes a first mandrel bundle (120a), which is disposed on both ends of the following stack table (20) and is installed to be linearly movable in the first mandrel support frame (112a), two of which form a pair.

In addition, the first mandrel assembly 110a is fixedly installed on one end side of the mounting frame 52 and moves the first mandrel assemblies 120a closer to or farther from the stack table 20. A first mandrel forward/backward driving unit ( 140a), and a first mandrel lifting driver 160a fixedly installed on the top of the other end of the mounting frame 52 and lifting and operating the first mandrel bundles 120a toward the stack table 20.

Similarly, the second mandrel assembly 110b includes the second mandrel support frame 112b that reciprocates along the stack table 20 toward the negative electrode transfer picker 60 and the positive electrode transfer picker 70, and the stack table 20. It includes a second mandrel bundle 120b, two of which form a set, disposed on both ends of the stack table 20 connected to the other side and installed to be linearly movable in the second mandrel support frame 112b.

In addition, the second mandrel assembly 110b is fixedly installed on one end side of the mounting frame 52 and moves the second mandrel assemblies 120b closer to or farther from the stack table 20. A second mandrel forward and backward driving unit ( 140b), and a second mandrel lifting driver 160b fixedly installed on the top of the other end of the mounting frame 52 and lifting and operating the second mandrel bundles 120b toward the stack table 20.

That is, the first and second mandrel assemblies 110a and 110b are formed to have the same configuration, and the first and second mandrel assemblies 110a and 110b are mirrored with the stack table 20 therebetween. It is installed symmetrically on one side and the other side of the stack table 20.

First, the first and second mandrel support frames 112a and 112b each have first and second elevating plates 114a and 114b provided in substantially vertical plate shapes and extending along the longitudinal direction of the stack table 20. include

At this time, the first elevating plate 114a is movably installed on one side of the tilting frame 42, and similarly, the second elevating plate 114b is movably installed on the other side of the tilting frame 42.

Here, the first and second elevating plates 114a and 114b are capable of being elevated on one side and the other side of the tilting frame 42 via a normal LM guide rail (not shown) and an LM guide block (not shown). can be installed

On the other hand, the first and second mandrel forward and backward rails 116a and 116b in which the first and second mandrel assemblies 120a and 120b are slidably installed on the upper side of the first and second elevating plates 114a and 114b, respectively It is installed to extend along the longitudinal direction of the first and second elevating plates 114a and 114b.

And the other side of the first lifting plate 114a opposite to one side of the tilting frame 42 and one side of the second lifting plate 114a opposite to the other side of the tilting frame 42 are provided in a substantially horizontal plate shape. First and second supporting plates 118a and 118b extending along the longitudinal direction of the first and second elevating plates 114a and 114b are installed.

The first mandrel assemblies 120a of which two form a set each include a first slider 122a and a first mandrel 126a, and similarly, the second mandrel assemblies 120b of which two form a set each include a first slider 122a and a first mandrel 126a. It includes two sliders 122b and a second mandrel 126b.

As shown, the first sliders 122a of the first mandrel bundles 120a are slidably mounted on the first mandrel forward and backward rails 116a with the stack table 20 interposed therebetween, and similarly, the second mandrel bundle As shown, the second sliders 122b of 120b are slidably mounted on the second mandrel forward/backward rail 116b with the stack table 20 interposed therebetween.

To this end, on the lower surface of each first slider 122a, a first mandrel forward and backward rail block 124a slidably mounted on the first mandrel forward and backward rail 116a is installed, and similarly, a second slider 122b On the lower surface of ), a second mandrel forward/backward rail block 124b slidably mounted on the second mandrel forward/backward rail 116b is installed.

On the other hand, the first mandrels 126a of the first mandrel bundles 120a and the second mandrels 126b of the second mandrel bundles 120b are provided in a horizontally extended bar shape as shown.

At this time, each of the first mandrels 126a is installed on the first slider 122a via the first mandrel block 128a to direct the stack table 20, and similarly each of the second mandrels 126b are It is installed on the second sliders 122b via the second mandrel block 128b so as to orient the stack table 20 .

Preferably, each of the first and second mandrels 126a and 126b may be installed on the first and second mandrel blocks 128a and 128b so that their positions can be finely adjusted in the left and right and up and down directions.

For example, each of the first and second mandrels 126a and 126b may be finely adjusted in left and right and up and down directions via a conventional actuator (not shown) and a bolt (not shown).

Meanwhile, the first mandrel assemblies 120a are interlockably connected via the first interlocking belt 130a, and similarly, the second mandrel assemblies 120b are interlockably connected via the second interlocking belt 130b. .

As shown, the first interlocking belt 130a is rotatably spanned over a pair of first belt pulleys 132a provided at one end and the other end of the first supporting plate 118a, and similarly, the second interlocking belt (130b) is rotatably spanned between a pair of second belt pulleys (132b) provided on one end side and the other end side of the second support plate (118b) as shown.

Here, the first interlocking belt 130a forms a straight line on one side and the other side based on an imaginary center line connecting the center of rotation of the pair of first belt pulleys 132a, and similarly, the second interlocking belt 130b has one Straight lines are formed on one side and the other side based on an imaginary center line connecting the center of rotation of the pair of second belt pulleys 132b.

At this time, the first slider 122a of one first mandrel assembly 120a and the first slider 122a of another first mandrel assembly 120a are straight lines on one side and the other side of the first interlocking belt 130a, respectively. The second slider 122b of one second mandrel assembly 120b and the second slider 122b of another second mandrel assembly 120b are respectively It is connected to one side and the other straight part of the second interlocking belt 130b via a connecting bracket 134b.

In this way, any one of the first and second mandrel assemblies 120a and 120b of the first and second mandrel assemblies 120a and 120b connected to the first and second interlocking belts 130a and 130b are first and second mandrel assemblies 120a and 120b, respectively. It is moved toward the stack table 20 by the operation of the mandrel forward and backward driving units 130a and 130b, and the first and second mandrel assemblies 120a and 120b are also moved to the stack table (by the operation of the first interlocking belt 130a). 20), and on the contrary, one of the first and second mandrel assemblies 120a and 120b is moved to spread apart on the stack table 20, and another first And the second mandrel assemblies 120a and 120b are also moved to the side of the stack table 20 by the operation of the first interlocking belt 130a.

The first mandrel forward/backward drive unit 140a includes a first mandrel forward/backward servomotor 142a and a first forward/reverse ball screw shaft 144a that converts rotational torque of the first mandrel forward/backward servomotor 142a into linear motion. ) and a first forward and backward ball screw nut 146b, and a first connecting member 150a connecting the first forward and backward ball screw nut 146a and any one of the first mandrel bundles 120a.

Similarly, the second mandrel forward and backward driver 140b includes a second mandrel forward and backward servomotor 142b and a second forward and backward ball screw shaft that converts the rotational torque of the second mandrel forward and backward servomotor 142b into linear motion. (144b) and a second forward and backward ball screw nut (146b), and a second connecting member (150b) connecting the second forward and backward ball screw nut (146b) and any one of the second mandrel monkeys (120b). .

As shown, the first and second mandrel forward and backward servomotors 142a and 142b are located at the top of the other end of the mounting frame 42 facing the top of one end of the mounting frame 42 to which the tilting drive motor 44 is fixedly installed. It is fixedly installed so as not to interfere.

The first and second forward and backward ball screw shafts 144a and 144b extend horizontally along the longitudinal direction of the stack table 20, respectively, as shown, and rotate at the top of the other end of the mounting frame 42 so as not to interfere with each other. can be installed

At this time, one end sides of the first and second forward and backward ball screw shafts 144a and 144b are connected to the first and second mandrel forward and backward servomotors 142a and 142b, respectively, via a conventional power transmission device, and the first And the first and second forward and backward ball screw nuts 146a and 146b are inserted into the second forward and backward ball screw shafts 144a and 144b, respectively, as shown.

And first and second forward and backward toggle brackets 148a and 148b extending horizontally toward the first and second mandrel bundles 120a and 120b adjacent to the first and second forward and backward ball screw nuts 146a and 146b. is mounted

Here, the first and second forward and backward ball screw nuts 146a and 146b and the first and second forward and backward toggle brackets 148a and 148b by the operation of the first and second forward and backward ball screw shafts 144a and 144b Since linear movement of ) is a well-known technique, a detailed description thereof will be omitted.

On the other hand, the first and second connecting members 150a and 150b have upper ends facing the extended ends of the first and second forward and backward toggle brackets 148a and 148b, respectively, and either one of the first and second mandrel bundles 120a. , 120b) is installed on the lower side of the first and second forward and backward wing brackets 152a and 152b and each of the first and second forward and backward wing brackets 152a and 152b connected to the first and second forward and backward wing brackets 152a and 152b. It includes first and second forward and backward rotation guides 154a and 154b having a substantially semi-cylindrical shape connecting the wing brackets 152a and 152b and the first and second forward and backward toggle brackets 148a and 148b.

At this time, the first forward and backward rotation guide 154a is curved to one side as shown so as not to interfere with the tilting shaft 46 rotatably supporting the tilting frame 42 on the mounting frame 52. The second forward/backward rotation guide 154b is formed to have a ")" shaped cross section curved to the other side.

And on the outer surfaces of the first and second forward and backward rotation guides 154a and 154b, first and second forward and backward rotations are performed along curved arcs of the first and second forward and backward rotation guides 154a and 154b. The rails 156a and 156b are integrally formed to protrude, and the first forward and backward rotation rail 156a is a first forward and backward roller 158a provided as a pair at the extended end of the first forward and backward toggle bracket 148a. It is slidably interposed between them, and similarly, the second forward and backward rotation rail 156b slides between the second forward and backward rollers 158b provided as a pair at the extended end of the second forward and backward toggle bracket 148b. possibly intervened.

That is, the first and second mandrel bundles 120a and 120b connected to the first and second forward and backward toggle brackets 148a and 148b via the first and second connecting members 150a and 150b 2 The mandrels 126a and 126b are first and second forward and backward toggles to press and hold the separator S or the negative electrode plate N and the separator S together with the positive plate A stacked on the stack table 20. By the operation of the brackets 148a and 148b, they are moved to the upper side of the stack table 20 or moved apart from the stack table 20.

And since the first and second forward and backward toggle brackets 148a and 148b are connected to the first and second mandrel bundles 120a and 120b via the first and second forward and backward rotation guides 154a and 154b, respectively, The first and second mandrel assemblies 120a and 120b are rotated along the stack table 20 toward the negative plate transfer picker 60 and the positive electrode transfer picker 70 by the operation of the tilting drive motor 44, and the first And even if the first and second mandrel bundles 120a and 120b are lifted and moved by the operation of the second mandrel lift drive units 160a and 160b, the first and second forward and backward toggle brackets 148a and 148b are 2 It is not separated from the forward and backward rotation guides 154a and 154b, whereby even if the first and second mandrel bundles 120a and 120b turn toward the negative plate transfer picker 60 and the positive electrode transfer picker 70, the first and second mandrel bundles 120a and 120b The first and second mandrels 126a and 126b of the two mandrel bundles 120a and 120b form a separator (S) or a negative electrode plate (N) and a separator (S) together with the positive plate (A) stacked on the stack table (20). It is moved toward the stack table 20 or widened from the stack table 20 by the operation of the first and second forward and backward toggle brackets 148a and 148b so as to be pressurized and gripped.

The first mandrel lifting driver 160a includes a first mandrel lifting servomotor 162a, a first lifting ball screw shaft 164a converting rotational torque of the first mandrel lifting servomotor 162a into linear motion, and a first mandrel lifting servomotor 162a. Connecting the elevating ball screw nut 166a, the first elevating ball screw nut 166a and the first mandrel support frame 112a converts the linear motion of the first elevating ball screw nut 166a into an elevating motion to It includes a first link member 170a for moving the mandrel support frame 112a up and down.

Similarly, the second mandrel lifting driver 160b includes a second mandrel lifting servomotor 162b, a second lifting ball screw shaft 164b for converting rotational torque of the second mandrel lifting servomotor 162b into linear motion, and a second mandrel lifting servomotor 164b. The second lifting ball screw nut 166b is connected to the second lifting ball screw nut 166b and the second mandrel support frame 112b, but the linear motion of the second lifting ball screw nut 166b is converted into lifting motion to 2 includes a second link member 170b for moving the mandrel support frame 112b up and down.

The first and second mandrel lifting servomotors 162a and 162b are mounted on a mounting frame opposite to the first and second mandrel forward and backward servomotors 142a and 142b so as not to interfere with the tilting drive motor 44 as shown. One end of 42) is fixedly installed on the upper side.

That is, the first and second mandrel elevation servomotors 162a and 162b are fixedly installed on one end and the other side of the upper end of the mounting frame 42 with the tilting drive motor 44 interposed therebetween.

The first and second elevating ball screw shafts 164a and 164b extend horizontally along the longitudinal direction of the stack table 20, respectively, as shown, and can rotate at one end of the mounting frame 42 without interfering with each other. be installed

At this time, one end sides of the first and second lifting ball screw shafts 164a and 164b are respectively connected to the first and second mandrel lifting servomotors 162a and 162b via a normal coupling, and the first and second First and second lifting ball screw nuts 166a and 166b are inserted into the lifting ball screw shafts 164a and 164b, respectively, as shown.

Further, first and second lifting toggle brackets 168a and 168b extending horizontally toward adjacent first and second lifting plates 114a and 114b are mounted on the first and second lifting ball screw nuts 166a and 166b. .

Here, the straight lines of the first and second lifting ball screw nuts 166a and 166b and the first and second lifting toggle brackets 168a and 168b by the operation of the first and second lifting ball screw shafts 164a and 164b Since movement is a well-known technique, a detailed description thereof will be omitted.

On the other hand, the first link member 170a converts the linear motion of the first main rod 186a and the first driven rod 188a, which convert the linear motion into the lifting motion, and the linear motion of the first lifting toggle bracket 168a into the first main motion. It includes a first lifting wing bracket 174a that transmits to the rod 186a and a first yoke cam block 192a that transmits the lifting motion of the first driven rod 188a to the first mandrel support frame 112a.

In addition, the first link member 170a further includes a first link frame 172a supporting the first main rod 186a, the first driven rod 188a, and the first lifting wing bracket 174a.

Similarly, the second link member 170b converts the linear motion of the second main rod 186b and the second driven rod 188b, which convert the linear motion into the lifting motion, and the second lifting toggle bracket 168b into the second main motion. It includes a second lifting wing bracket 174b that transmits to the rod 186b and a second yoke cam block 192b that transmits the lifting movement of the second driven rod 188b to the second mandrel support frame 112b.

In addition, the second link member 170b further includes a second link frame 172b supporting the second main rod 186b, the second driven rod 188b, and the second lifting wing bracket 174b.

As shown, the first and second link frames 172a and 172b are provided in a vertical plate shape.

At this time, the first link frame 172a is installed on one side of the tilting frame 42 adjacent to the first mandrel lifting servomotor 162a so as not to interfere with the lifting operation of the first lifting plate 114a, and likewise the second link frame 172a. The frame 172b is installed on the other side of the tilting frame 42 adjacent to the second mandrel lifting servomotor 162b so as not to interfere with the lifting operation of the second lifting plate 114b.

The first and second lifting wing brackets 174a and 174b are installed on the first and second link frames 172a and 172b to be linearly movable along the longitudinal direction of the stack table 20, respectively.

To this end, first and second lift rails 176a and 176b are installed on outer surfaces of the first and second link frames 172a and 172b along the longitudinal direction of the stack table 20, and the first and second lift rails 176a and 176b are installed. First and second lift rails 176a and 176b are slidably fitted into the first and second lift rails 176a and 176b on the lower side of the inner surfaces of the first and second lift wing brackets 174a and 174b, respectively. Second lift rail blocks 178a and 178b are installed.

And first and second lifting and rotating guides 180a having a substantially semi-cylindrical shape connected to the first and second lifting toggle brackets 168a and 168b, respectively, on the upper side of the first and second lifting wing brackets 174a and 174b. 180b) is installed.

At this time, the first lifting and rotating guide 180a has a "("-shaped cross section curved to one side as shown so as not to interfere with the tilting shaft 46 connecting the tilting frame 42 to the tilting drive motor 44. , and the second lifting and rotating guide 180b is formed to have a ")" shaped cross section curved to the other side.

And on the outer surfaces of the first and second lifting rotation guides 180a and 180b, along the curved arcs of the first and second lifting rotation guides 180a and 180b, respectively, first and second lifting rotation rails ( 182a and 182b are integrally formed to protrude, and the first lifting and rotating rail 182a is interposed between the first lifting rollers 184a provided as a pair at the extended end of the first lifting toggle bracket 168a, Likewise, the second lifting rotation rail 182b is slidably interposed between the second lifting rollers 184b provided as a pair at the extended end of the second lifting toggle bracket 168b.

The first and second main rods 186a and 186b are provided to extend horizontally along the longitudinal direction of the stack table 20, and each of the first and second driven rods 188a and 188b has an approximate "L" shape. provided in the form

At this time, the first and second driving rods 186a and 186b have one end side respectively via the first hinge pin h1 to the first and second lifting wing brackets 174a and 174b respectively to be able to pivot in the vertical direction The first and second driven rods 188a and 188b are pivotally pivotable in the vertical direction to the first and second link frames 172a and 172b, respectively, via the second hinge pin h2, respectively. connected, and the extension ends of the first and second driven rods 186a and 186b are respectively pivoted to the lower sides of the first and second driven rods 188a and 188b via the third hinge pin h3 Connected.

Further, first and second lift guide rollers 190a and 190b are mounted on the upper ends of the first and second driven rods 188a and 188b, respectively.

Meanwhile, the first and second yoke cam blocks 192a and 192b are installed under the first and second support plates 118a and 118b of the first and second mandrel support frames 112a and 112b, respectively.

At this time, horizontal first and second yoke long holes 194a and 194b extending along the longitudinal direction of the stack table 20 are formed in the first and second yoke cam blocks 192a and 192b, respectively. The first elevating guide roller 190a mounted on the upper end of the first driven rod 188a is fitted into the first yoke long hole 194a of the cam block 192a, and the second yoke of the second yoke cam block 192b The second elevating guide roller 190b mounted on the upper end of the second driven rod 188b is inserted into the long hole 194b.

That is, the first and second lifting wing brackets 174a and 174b connected to the first and second lifting toggle brackets 168a and 168b via the first and second lifting rotation guides 180a and 180b are The operation of the second lift toggle brackets 168a and 168b linearly moves along the first and second lift rails 176a and 176b, and the operation of the first and second lift wing brackets 174a and 174b controls the motion. The upper ends of the first and second driven rods 188a and 188b connected via the first and second main rods 186a and 186b pivot in the vertical direction around the second hinge pin h2, whereby the The first and second mandrel support frames 112a and 112b connected to the upper ends of the first and second driven rods 188a and 188b via the first and second yoke cam blocks 190a and 190b are moved up and down, As a result, the first and second mandrels 126a and 126b of the first and second mandrel bundles 120a and 120b installed on the first and second mandrel support frames 112a and 112b move upward and downward toward the stack table 20 The separator (S) together with the positive plate (A) or the separator (S) together with the negative plate (N) is pressed toward the stack table 20 to hold or release the grip.

In addition, since the first and second lifting toggle brackets 168a and 168b are connected to the first and second lifting wing brackets 174a and 174b via the first and second lifting and rotating guides 180a and 180b, respectively, Even if the first and second mandrel support frames 112a and 112b turn toward the negative plate transfer picker 60 and the positive electrode transfer picker 70 along the stack table 20 by the operation of the tilting drive motor 44, the first and second mandrel support frames 112a and 112b 2 The lifting toggle brackets 168a and 168b are not separated from the first and second lifting and rotating guides 180a and 180b, whereby the first and second mandrel support frames 112a and 112b are connected to the negative plate transfer picker 60 And even when turning toward the positive plate transfer picker 70, the first and second mandrel support frames 112a and 112b are moved up and down by the operation of the first and second lift toggle brackets 168a and 168b, and the first and second mandrels As the support frames 112a and 112b move up and down, the first and second mandrels 126a and 126b of the first and second mandrel bundles 120a and 120b move up and down toward the stack table 20, and Together with the separator (S) or the negative electrode plate (N), the separator (S) is pressed toward the stack table 20 to grip or release the grip.

Here, the first mandrel forward/backward drive unit 140a and the first mandrel lift drive unit 160a operate simultaneously to hold and release the positive electrode plate A and the separator S on the stack table 20, and similarly, the second The mandrel forward/backward driving unit 140b and the second mandrel lifting/moving driving unit 160b operate simultaneously to grip the negative electrode plate N and the separator S on the stack table 20 and release the gripping.

Meanwhile, although not shown, the first and second mandrel lifting and lowering driving units 160a and 160b may be provided as ordinary air cylinders.

In this way, when the first and second mandrel lifting drivers 160a and 160b are provided as air cylinders, the bodies of the air cylinders are installed on the tilting frame 42, respectively, and the cylinder rods of the air cylinders support the first and second mandrels, respectively. It may be connected to the frame (112a, 112b).

Hereinafter, an operating state of the mandrel unit 100 for manufacturing a cell stack of a secondary battery described above will be briefly described.

In order to manufacture the cell stack, first, the tilting drive motor 44 is operated to turn the stack table 20 toward the negative electrode transfer picker 60 (see FIG. 6).

At this time, the electrode plate stacking position adjusting means 30, the tilting frame 42, the first and second mandrel support frames 112a and 112b of the first and second mandrel assemblies 110a and 110b, and the first and second The mandrel assemblies 120a and 120b are also turned toward the negative plate transfer picker 60 along the stack table 20 .

As described above, when the stack table 20 is turned toward the negative plate transfer picker 60, the separator S is supplied from the separator supply unit 80 to the upper side of the stack table 20. At this time, the first mandrel assembly 110a ) is the first mandrel forward/backward driver 140a and the first mandrel so that the first mandrels 126a of the first mandrel assembly 120a press and hold the extended end side of the separator S toward the stack table 20 side. The lift driver 160a is simultaneously operated (see Fig. 6).

And, when the first mandrels 126a press and grip the extended end side of the separator S toward the stack table 20, the negative electrode plate transfer picker 60 loads the negative electrode plate N onto the separator S, and at the same time The two-mandrel assembly 110b presses the separator S toward the stack table 20, together with the other edge of the negative electrode plate N, in which the second mandrels 126b of the second mandrel assembly 120b are loaded on the separator S. The second mandrel forward/backward drive unit 140b and the second mandrel lift drive unit 160b are simultaneously operated so as to be gripped (see FIG. 7). When the separator S along with the negative electrode plate N is held on the stack table 20 by the second mandrels 126b, at the same time, the first mandrel assembly 110a is connected to the separator S by the first mandrels 126a. The first mandrels 126a are returned by simultaneously operating the first mandrel forward/backward driving unit 140a and the first mandrel lifting/moving driving unit 160a so as to release the grip on the extended end of the first mandrel (see FIG. 7).

As described above, when the second mandrels 126b of the second mandrel assembly 120b press and hold the separator S with the other edge of the negative electrode plate N loaded on the separator S toward the stack table 20 side, The tilting drive motor 44 pivots the stack table 20 toward the positive electrode transfer picker 70.

At this time, the electrode plate stacking position adjusting means 30, the tilting frame 42, the first and second mandrel support frames 112a and 112b of the first and second mandrel assemblies 110a and 110b, and the first and second The mandrel bundles 120a and 120b are also turned toward the positive electrode transfer picker 60 along the stack table 20 .

When the stack table 20 turns toward the positive electrode picker 70 in this way, the separator S supplied from the separator supply unit 80 is folded and held by the stack table 20 by the second mandrels 126b. The negative plate N is covered, and at the same time, the positive plate transfer picker 70 loads the positive plate A onto the separator S covering the negative plate N (see FIG. 8), and at the same time, the first mandrel assembly 110a The first mandrel 126a of the first mandrel assembly 120a presses and holds the separator S together with one edge of the positive electrode plate A loaded on the separator S toward the stack table 20 side. The mandrel forward/backward drive unit 140a and the first mandrel lift drive unit 160a are simultaneously operated (see FIG. 8). And when the separator (S) together with the positive electrode plate (A) is gripped on the stack table 20 by the first mandrels (126a), the second mandrel assembly (110b) simultaneously moves the second mandrels (126b) to the negative electrode plate (N). And the second mandrels 126b are returned by simultaneously operating the second mandrel forward/backward drive unit 140b and the second mandrel lift drive unit 160b so as to release the gripping of the separator S (see FIG. 8).

On the other hand, as described above, the first mandrels 126a of the first mandrel assembly 120a hold the separator S with the other edge of the positive electrode plate A loaded on the separator S toward the stack table 20 side. Then, the tilting drive motor 44 rotates the stack table 20 toward the negative electrode transfer picker 70 again.

In this way, when the stack table 20 turns toward the negative plate delivery picker 70 again, the separator S supplied from the separator supply unit 80 is folded and held by the stack table 20 by the first mandrels 126a. At the same time, the negative plate delivery picker 60 loads the negative plate N onto the separator S covering the positive plate A (see FIG. 9), and at the same time, the second mandrel assembly 110b ) The second mandrels 126b of the second mandrel assembly 120b press and hold the separator S together with the other edge of the negative electrode plate A loaded on the separator S toward the stack table 20. The two-mandrel forward/backward drive unit 140b and the second mandrel lift drive unit 160b are operated simultaneously (see Fig. 9). And, when the separator (S) together with the negative electrode plate (N) is gripped on the stack table 20 by the second mandrels (126b), at the same time, the first mandrel assembly (110a) is connected to the positive plate (A) by the first mandrels (126a). And the first mandrels 126a are returned by simultaneously operating the first mandrel forward/backward drive unit 140a and the second mandrel lift drive unit 160a to release the gripping of the separator S (see FIG. 9).

Here, the above-described method is repeatedly performed, whereby the negative electrode plate N and the positive electrode plate A are stacked with the separator S interposed therebetween to manufacture one cell stack.

In the mandrel unit 100 for manufacturing a cell stack of a secondary battery according to the present invention formed as described above, the first mandrel bundles 120a forming a pair of two are interlocked through the first interlocking belt 130a, and similarly, the two A first mandrel forward and backward servo for operating the first mandrel assemblies 120a and the second mandrel assemblies 120b by interlocking the second mandrel assemblies 120b forming a set through the second interlocking belt 130b It is possible to reduce the number of motors 142a and the second mandrel forward and backward servomotors 142b.

In addition, in the mandrel unit 100 for manufacturing a cell stack of a secondary battery according to the present invention, only the first and second mandrel assemblies 120a and 120b and the first and second mandrel support frames 112a and 112b include a stack table ( 20), it is possible to significantly reduce the weight of the components being rotated by turning toward the negative plate delivery picker 60 and the positive plate delivery picker 70, thereby greatly increasing the turning speed to increase the production speed of the cell stack. do.

Claims (13)

1. A mandrel unit for a cell stack manufacturing apparatus of a secondary battery that alternately presses and holds a negative electrode plate and a positive electrode plate along with a separator toward the stack table side during cell stack manufacturing,

   A first mandrel assembly installed on one side facing the negative plate delivery picker among both sides of the stack table, positioned between the negative plate delivery picker for loading the negative plate and the positive plate delivery picker for loading the positive plate, reciprocating between the two, and facing the stack table; and

   A second mandrel assembly installed on the other side of the stack table facing the positive plate transfer picker; includes,

   Each of the first and second mandrel assemblies,

   First and second mandrel bundles of two forming a set;

   First and second mandrel support frames respectively supporting the first and second mandrel bundles;

   First and second mandrel forward and backward driving units for moving the first and second mandrel assemblies forward and backward, respectively; and

   A first and second mandrel lifting driver for lifting and lowering the first and second mandrel bundles, respectively;

   When the cell stack is manufactured, the first and second mandrel bundles and the first and second mandrel support frames reciprocally rotate the negative plate transfer picker and the positive electrode plate transfer picker together with the stack table, 2 mandrel forward/backward drive unit and the first and second mandrel lift drive units do not reciprocate with the stack table, the first mandrel lift drive unit,

   a first mandrel elevating servomotor that supports the stack table in a reciprocating and pivoting manner and is fixedly installed on one end of a mounting frame on which a tilting drive motor for reciprocating and turning the stack table is installed;

   a first lifting ball screw shaft and a first lifting ball screw nut converting the rotational torque of the first mandrel lifting servo motor into linear motion; and

   Connecting the first lifting ball screw nut and the first mandrel support frame, converting the linear motion of the first lifting ball screw nut into lifting motion to lift and lift the first mandrel support frame on which the first mandrel bundles are supported Including; a first link member to do;

   The second mandrel lifting driver,

   a second mandrel lifting servomotor fixedly installed on one end of the mounting frame so as not to interfere with the tilting driving motor and the first mandrel lifting servomotor;

   a second lifting ball screw shaft and a second lifting ball screw nut converting the rotational torque of the second mandrel lifting servo motor into linear motion; and

   Connecting the second elevating ball screw nut and the second mandrel support frame, converting the linear motion of the second elevating ball screw nut into an elevating motion to lift and lift the second mandrel support frame on which the second mandrel bundles are supported A mandrel unit for a cell stack manufacturing apparatus of a secondary battery comprising: a second link member.
2. The method of claim 1,

   The first and second mandrel support frames,

   Including; first and second lifting plates of a vertical plate shape extending along the longitudinal direction of the stack table;

   The first elevating plate is movably installed on one side of the tilting frame supporting the stack table, and the second elevating plate is movably installed on the other side of the tilting frame,

   The first and second mandrel forward and backward rails on which the first and second mandrel assemblies are slidably installed at the upper ends of the first and second elevating plates have a length of the first and second elevating plates formed along the direction

   The other side of the first lifting plate opposite to one side of the tilting frame and the one side of the second lifting plate opposite to the other side of the tilting frame are provided in a horizontal plate shape, respectively, and the length of the first and second lifting plates A mandrel unit for an apparatus for manufacturing a cell stack of a secondary battery in which first and second support plates extending along a direction are installed.
3. The method of claim 2,

   The first mandrel bundles,

   first sliders slidably mounted on the first mandrel forward and backward rails with the stack table interposed therebetween; and

   A first mandrel provided in a bar shape extending horizontally and installed on the first slider via a first mandrel block to direct the stack table;

   The second mandrel bundles,

   second sliders slidably mounted on the second mandrel forward and backward rails with the stack table interposed therebetween; and

   A mandrel unit for a cell stack manufacturing apparatus of a secondary battery comprising a second mandrel provided in a bar shape extending horizontally and installed on the second slider via a second mandrel block to direct the stack table.
4. The method of claim 3,

   The first mandrel bundles and the second mandrel bundles are interlockably connected via a first interlocking belt and a second interlocking belt, respectively,

   The first interlocking belt is rotatably spanned over a pair of first belt pulleys provided at one end side and the other end side of the first support plate, and the second interlocking belt is one end side and the other end of the second support plate It is rotatably spanned over a pair of second belt pulleys provided on the side,

   The first slider of one of the first mandrel assemblies and the first slider of the other first mandrel assemblage are connected to one side and the other straight part of the first interlocking belt through a connecting bracket, respectively, The second slider of the second mandrel assembly and the second slider of the second mandrel assembly are respectively connected to one side and the other straight part of the second interlocking belt through a connecting bracket. A mandrel unit for manufacturing a cell stack of a secondary battery.
5. The method of claim 1,

   The first mandrel forward and backward driving unit,

   a first mandrel forward/backward servomotor fixedly installed on the upper portion of the other end of the mounting frame supporting the stack table in a reciprocating and pivoting manner;

   a first forward and backward ball screw shaft and a first forward and backward ball screw nut converting the rotational torque of the first mandrel forward and backward servomotor into linear motion; and

   A first connecting member connecting the first forward and backward ball screw nut and any one of the first mandrel bundles,

   The second mandrel forward and backward drive unit,

   a second mandrel forward/backward servomotor fixedly installed on the upper part of the other end of the mounting frame so as not to interfere with the first mandrel forward/backward servomotor;

   a second forward and backward ball screw shaft and a second forward and backward ball screw nut converting the rotational torque of the second mandrel forward and backward servomotor into linear motion; and

   A mandrel unit for a cell stack manufacturing apparatus of a secondary battery comprising: a first connecting member connecting the second forward and backward ball screw nut and any one of the second mandrel bundles.
6. The method of claim 5,

   The first and second forward and backward ball screw shafts each extend horizontally along the longitudinal direction of the stack table and are rotatably installed above the other end of the mounting frame so as not to interfere with each other,

   One end sides of the first and second forward and backward ball screw shafts are connected to the first and second mandrel forward and backward servomotors, respectively, via a power transmission device,

   First and second forward and backward ball screw nuts are fitted to the first and second forward and backward ball screw shafts, respectively, and horizontally toward the first and second mandrel bundles adjacent to the first and second forward and backward ball screw nuts A mandrel unit for an apparatus for manufacturing a cell stack of a secondary battery on which first and second forward and backward toggle brackets are mounted.
7. The method of claim 6,

   The first and second connecting members,

   First and second forward and backward wing brackets connected to either one of the first and second mandrel bundles, the upper ends of which face the extended ends of the first and second forward and backward toggle brackets, respectively; and

   The first and second semi-cylindrical first and second forward and backward toggle brackets installed at the lower end of each of the first and second forward and backward wing brackets and connecting the first and second forward and backward wing brackets and the first and second forward and backward toggle brackets. 2 forward and backward rotation guides;

   The first forward and backward rotation guide is formed to have a cross section curved to one side, and the second forward and backward rotation guide is formed to have a cross section curved to the other side,

   On outer surfaces of the first and second forward and backward rotation guides, first and second forward and backward rotation rails are integrally formed to protrude along curved arcs of the first and second forward and backward rotation guides,

   The first forward and backward rotation rail is slidably interposed between first forward and backward rollers provided as a pair at the extended end of the first forward and backward toggle bracket, and the second forward and backward rotation rail is provided as a pair to the second forward and backward rotation rail. A mandrel unit for a cell stack manufacturing apparatus of a secondary battery slidably interposed between second forward and backward rollers provided as a pair at an extended end of a gin toggle bracket.
8. The method of claim 1,

   The first and second elevating ball screw shafts extend horizontally along the longitudinal direction of the stack table, and are rotatably installed on one end of the mounting frame so as not to interfere with each other,

   One end sides of the first and second lifting ball screw shafts are connected to the first and second mandrel lifting servomotors, respectively, via a coupling,

   First and second lifting ball screw nuts are fitted to the first and second lifting ball screw shafts, respectively, and extend horizontally toward the first and second mandrel support frames adjacent to the first and second lifting ball screw nuts. A mandrel unit for a cell stack manufacturing apparatus of a secondary battery on which first and second lifting toggle brackets are mounted.
9. The method of claim 8,

   The first link member,

   1st main rod;

   a first driven rod;

   a first lift wing bracket that transfers the linear motion of the first lift toggle bracket to the first main rod;

   a first yoke cam block transmitting the lifting movement of the first driven rod to the first mandrel support frame; and

   A first link frame supporting the first main rod, the first driven rod, and the first lifting wing bracket; includes,

   The second link member,

   2nd main rod;

   a second driven rod;

   a second lift wing bracket that transfers the linear motion of the second lift toggle bracket to the second main rod;

   a second yoke cam block transmitting the lifting movement of the second driven rod to the second mandrel support frame; and

   A first link frame supporting the second main rod, the second driven rod, and the second lift wing bracket; including,

   The first and second link frames are installed on one side and the other side of the tilting frame supporting the stack table so as not to interfere with the elevation of the first and second mandrel support frames Mandrel unit for manufacturing a cell stack of a secondary battery.
10. The method of claim 9,

    The first and second lifting wing brackets are installed on the first and second link frames to be linearly movable along the longitudinal direction of the stack table, respectively.

    First and second lift rails are installed on outer surfaces of the first and second link frames along the longitudinal direction of the stack table,

    First and second lifting rail blocks slidably fitted into the first and second lifting rails are installed on the lower side of the inner surface of the first and second lifting vane brackets facing the first and second lifting rails, respectively. becomes,

    A mandrel unit for a cell stack manufacturing apparatus of a secondary battery having semi-cylindrical first and second lifting and rotating guides connected to the first and second lifting toggle brackets, respectively, installed on the upper side of the first and second lifting wing brackets. .
11. The method of claim 10,

    The first lifting and rotating guide is formed to have a cross section curved to one side, and the second lifting and rotating guide is formed to have a cross section curved to the other side,

    On the outer surfaces of the first and second lifting and rotating guides, first and second lifting and rotating rails are integrally formed to protrude along curved arcs of the first and second lifting and rotating guides,

    The first lift rotation rail is interposed between first lift rollers provided as a pair at the extended end of the first lift toggle bracket, and the second lift rotation rail is provided as a pair at the extended end of the second lift toggle bracket. A mandrel unit for a cell stack manufacturing apparatus of a secondary battery slidably interposed between the second lifting rollers provided by the.
12. The method of claim 9,

    Each of the first and second main rods is provided to extend horizontally along the longitudinal direction of the stack table,

    Each of the first and second driven rods is provided in an "L" shape,

    The first and second main movable rods have one end sides connected to the first and second lifting vane brackets to be pivotable in the vertical direction, respectively, via a first hinge pin, respectively,

    The first and second driven rods are pivotally connected in the vertical direction to the first and second link frames, respectively, via a second hinge pin at the center side, respectively,

    The extension ends of the first and second main rods are pivotally connected to the lower sides of the first and second driven rods, respectively, via a third hinge pin, respectively.

    A mandrel unit for a cell stack manufacturing apparatus of a secondary battery, wherein first and second lifting guide rollers are mounted on upper ends of the first and second driven rods, respectively.
13. The method of claim 12,

    The first and second yoke cam blocks are respectively installed under the first and second support plates of the first and second mandrel support frames,

    Horizontal first and second yoke long holes extending along the longitudinal direction of the stack table are formed in the first and second yoke cam blocks, respectively;

    The mandrel unit for a cell stack manufacturing apparatus of a secondary battery, wherein the first elevating guide roller is inserted into the first yoke long hole, and the second elevating guide roller is inserted into the second yoke long hole.

Images