KR102053621B1 - Fixing jig for processing core semi-product - Google Patents

Abstract

The present invention relates to a jig for processing a core semi-finished product, which makes it possible to grip the core semi-finished product using the rotational force of a CNC lathe spindle. The jig for processing the core semi-finished product according to the present invention comprises: a support means mounted to an end unit of a spindle and supporting the core semi-finished product to perform post-processing work; and a core rotation/gripping means mounted to the support means, and receiving the rotational force of the spindle and rotating the core semi-finished product supported by the support means while gripping the same in the support means.

Description

Jig for processing core semi-finished products {FIXING JIG FOR PROCESSING CORE SEMI-PRODUCT}

The present invention relates to a core in which a separator for secondary batteries is wound, and more particularly, to a jig for processing a semi-finished product for enabling a core semi-finished product to be fixed to a CNC lathe spindle during post-processing of an injection-molded core semi-finished product.

A secondary battery refers to a battery that can be charged and discharged, unlike a primary battery that cannot be charged. As a result of recent developments in lightweight and high-performance portable electronic devices and the development of the Internet of things (IoT), its driving power source The use is spreading.

In particular, lithium secondary batteries have higher voltages and higher energy densities per unit weight than nickel-cadmium batteries or nickel-hydrogen batteries, which are widely used as power sources for portable electronic equipment.

Secondary batteries, as anyone can see, are provided with a structure in which a positive electrode and a negative electrode are laminated with a separator interposed therebetween, wherein the separator is a polymer membrane having a porous structure, which not only provides a passage through which lithium ions can actively move, but also a positive electrode and a negative electrode. It serves to prevent contact.

In general, as a separator of a lithium secondary battery, a polyolefin-based alone or a porous sheet or film made of polyolefin-based and ultra high molecular weight polyethylene has been variously used. It is wound around a cylindrical core and provided to the place of use.

1 is a view showing a membrane winding core related to the present invention, the core 10 is a synthetic resin melt, for example, a melt of ABS material in order to prevent mechanical deformation or damage of the mold (not shown) After injection into a cavity, it is prepared by curing the melt injected into the cavity.

Figure 1 (a) shows the core semi-finished product is cured from the mold, the core semi-finished product (1) is the inner tube (2), the outer tube (3) concentric with the inner tube (2), as shown And reinforcing blades 4 connecting the inner tube 2 and the outer tube 3 to be integrated in the mold.

In addition, in the core semifinished product 1, a burr 5 cured along the runner for guiding the melt to the cavity side of the mold is integrally formed at one end of the inner tube 2, and the burr thus formed ( 5) is removed by hand because it closes one end of the inner tube (2) as shown.

The core semifinished product 1 undergoes post-processing to trim the inner diameter portion 5 'of the inner tube 2 from which the burrs 5 are removed, and post-processing to trim the outer peripheral surface side of the outer tube 3 on which the separator is wound.

Here, the post-processing of the core semi-finished product (1) is a computer numerical control lathe (CNC lathe) is used, Figure 1 (b) is shown in the core 10, the post-processing is completed for the core semi-finished product (1).

On the other hand, the core semi-finished product (1) during the post-processing of the core semi-finished product (1) is gripped by a conventional air chuck (not shown) mounted on the main spindle (not shown) of the CNC lathe is processed At this time, the jaws of the air chuck are inserted into the inner tube 2 and then pressurized by the inner diameter of the inner tube 2 while being opened by air pressure to fix the core semi-finished product 1.

However, the air chuck described above has a problem that the dimensions of the inner diameter are changed or distorted because jaws of the air chuck pressurize the inner diameter of the inner tube 2 using air pressure.

Since the deformation of the inner tube 2 to the inner diameter affects the concentricity of the inner tube 2, even if the shaft (not shown) is not inserted into the inner tube 2 or the shaft is fitted, Fig. 2 causes another problem, which in turn has another problem of lowering the reliability of the winding core 10.

In addition, the air chuck described above has a problem in that the time required for holding the core semifinished product 1 is long because the air pressure must be supplied when the core semifinished product 1 is gripped. There was another problem that degraded.

Related prior art is Korean Patent Registration No. 10-1144983 (Registration Date: 2012. 05. 03).

The present invention is to provide a jig for processing a semi-finished product for the core semi-finished product can be gripped by using the rotational force of the CNC lathe spindle.

Technical problems to be achieved by the present invention are not limited to the above-mentioned technical problems.

The present invention for achieving the above object is a core semi-finished product jig for fixing the core semi-finished product to the spindle of the CNC lathe for finishing the core semi-finished product, the core semi-finished product jig is mounted on the end of the main shaft, to perform post-processing work Support means for supporting a core semifinished product; And a core rotation / holding means mounted to the support means and configured to grip the support means while receiving the rotational force of the main shaft and rotating the core semi-finished product supported by the support means.

Specifically, the support means, the core pedestal, one side is mounted to the main shaft facing the end of the main shaft; And a core guide extending horizontally from the center of the other side of the core pedestal to the outside of the other side of the core pedestal, wherein the other side of the core pedestal is in close contact with one side of the core semifinished product fitted along the core guide. The inner side of the inner tube of the core semifinished product can be slidably fitted without shaking.

More specifically, the core guide may be formed to have a length shorter than the length of the inner tube.

Specifically, the rotation / gripping means, is formed to extend along the longitudinal direction of the core guide, one end of the plurality of fixing bars mounted on the other side of the core support at equal angle intervals so as not to interfere with the core guide; And a locking piece mounted to an extension end of each fixing bar via a screw, wherein the fixing bars are disposed between the outer tube and the inner tube of the core semifinished product fitted to the core guide, and the direction of rotation of the spindle when the spindle is operated. The core semifinished product is rotated in close contact with the reinforcing blades of the core semifinished product adjacent to the hook, and the engaging pieces can be guided along the fixing bar when the spindle is running, and span the end of the reinforcing blade to grip the core semifinished product on the supporting means.

More specifically, the length of the fixing bars exposed to the outside of the other side of the core pedestal may be formed to have the same length as the length of the width of the core semi-finished product is fitted to the support means.

More specifically, the fixing bars may be arranged to be in contact with the inner diameter of the outer tube to support the outer tube of the core semifinished product fitted to the support means.

Specifically, the catching pieces are provided in the shape of an ellipse plate whose one side is disposed facing the extension end of the fixing bar, but the catching pieces are eccentrically fixed so that a protrusion extending outward from the radial one side of the mating fixing bar is formed. Mounted on the extension end, the protrusion may protrude along the tangential direction of the rotational direction of the main shaft.

As described above, the jig for semi-finished product processing according to the present invention uses the rotational force of the CNC lathe spindle to grip the core semi-finished product for post-processing, thereby preventing the core semi-finished product from being deformed by pressure when grasping the core semi-finished product as in the prior art. There is an advantage in that it is possible to prevent deformation of the membrane winding core produced thereby, thereby increasing product reliability.

In addition, the jig for processing semi-finished products according to the present invention has a merit that it is possible to significantly reduce the time for gripping the core semi-finished product to increase the yield for the membrane winding core.

1 is a view showing a membrane winding core related to the present invention,
Figure 2 is a perspective view showing a jig for processing semi-finished products according to the present invention,
3 is a cross-sectional view showing a state in which the core semi-finished product is held in a jig for processing a semi-finished product according to the present invention
4a and 4b is a view showing a state of use of the jig for processing semi-finished products according to the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention. Like elements in the figures are denoted by the same reference numerals wherever possible. In addition, detailed descriptions of well-known functions and configurations that may unnecessarily obscure the subject matter of the present invention will be omitted.

2 and 3 is a view showing a jig for processing a semi-finished product according to the present invention, the core semi-finished product jig 100 according to the present invention is mounted on the end of the CNC lathe (not shown) spindle (not shown) and post-processing Support means 110 for supporting the core semi-finished product (see FIG. 1) to perform the work, and the core semi-finished product (1) mounted on the support means 110 and received by the rotational force of the main shaft inserted into the support means 110 It comprises a core rotation / gripping means 120 for rotating and gripping the core semi-finished product 1 to the support means 110 at the same time.

First, the support means 110 includes a core support 112 and a core guide 116 integrally formed with the core support 112 as shown.

The core pedestal 112 is provided in a disk shape with one side facing the end of the CNC lathe spindle, and the core pedestal 112 is mounted on the main shaft with one side facing the end of the CNC lathe spindle.

Here, the core pedestal 112 is mounted to the main shaft via a conventional fastening means, for example, a bolt (bolt), the bolt fastening holes 114 are formed at equal angle intervals on one side of the core pedestal 112. .

And the other side of the core pedestal 112 is one side of the core semifinished product (1) that is fitted along the core guide 116, that is, the surface on which the bur (5; see Figure 1) is not formed when the core semifinished product (1) injection molding Is in close contact.

The other side of the core pedestal 112 is provided to be precisely and evenly trimmed so that one side of the core semi-finished product 1 is in close contact with each other.

Meanwhile, the core guide 116 guides the core semifinished product 1 to be post-processed to the other side side of the core pedestal 112 and simultaneously supports the core semifinished product 1 guided to the other side side of the core pedestal 112. .

The core guide 116 extends horizontally from the center of the other side of the core pedestal 112 to the outer side of the other side of the core pedestal 112 as shown.

The core guide 116 thus formed is slidably fitted inside the inner tube 2 (see FIG. 1) of the core semifinished product 1 without shaking. Preferably, the core guide 116 has a circular cross section. Is formed.

And the core guide 116 is formed to have a length shorter than the length of the inner tube (2). This is to ensure that the extension end of the core guide 116 does not interfere with the finishing tool or the like during the finishing work on the inner diameter of the inner tube 2 from which the burrs 5 are removed.

The core pedestal 112 of the support means 110 formed as described above is mounted with the core rotation / holding means 120 so as not to interfere with the core guide 116.

The core rotation / holding means 120 includes a plurality of fixing bars 122 and locking pieces 124 coupled to the respective fixing bars 122.

The fixing bars 122 are formed to extend along the longitudinal direction of the core guide 116, and one end of the fixing bars 122 is isometric on the other side of the core pedestal 112 so as not to interfere with the core guide 116. Mounted spaced apart.

To this end, fixing bar fastening holes 118 to which one end of the fixing bars 122 are fastened are formed on the other side of the core pedestal 112, and female threads are formed on the inner circumferential surfaces of the fixing bar fastening holes 118, respectively. On the outer circumferential surface of the fixing bar 122, which is connected to one end of the fixing bar 122, a male screw is formed to engage the female screw formed in the fixing bar fastening hole 118.

And the length of the fixing bar 122 exposed to the outside of the other side of the core pedestal 112 is formed to have the same length as the length of the width of the core semi-finished product (1) fitted to the support means 110, the fixing formed in this way The bars 122 are arranged between the inner tube 2 and the outer tube 3 so as not to interfere with the reinforcing blades 4 when the core semifinished product 1 is fitted to the support means 110.

That is, when the core semifinished product 1 to be subjected to the post-working operation is inserted into the support means 110 under the condition that the reinforcing blades 4 (see FIG. 1) of the core semifinished product 1 are not caught by the fixing bars 122. The core semifinished product 1 is inserted into the support means 110 (see FIG. 4A).

Preferably, the fixing bars 122 are disposed between the inner tube 2 and the outer tube 3 as described above, and the outer tube 3 of the core semifinished product 1 fitted to the support means 110 is provided. It may be arranged to contact the inner diameter of the outer tube (3) to support.

On the other hand, the fixed bars 122 are in close contact with the reinforcing blades 4 of the core semi-finished product 1 adjacent to the rotational direction of the main shaft while rotating along the main shaft when the CNC lathe spindle is running, whereby the core semi-finished product fitted to the support means 110 (1) is rotated along the main axis of the CNC lathe.

Although two fixing bars 122 are shown in FIGS. 2 to 4B, it will be appreciated by all that the number of fixing bars 122 is not limited to four. That is, the fixing bar 122 may be increased or decreased than the number of the fixing bars 122 illustrated in FIGS. 2 to 4B.

On the other hand, the engaging pieces 124 are provided in the shape of a substantially elliptical plate with one side facing the extension end of the fixing bar 124.

And each of the engaging pieces 124 is mounted facing the extension end of the fixing bar 122, one side of the mating via the screw 126, the engaging piece 124 is fixed to the side eccentrically fixed bar ( 122).

That is, the engaging pieces 124 mounted on the fixed bar 122 form a protrusion 128 extending outwardly on one side of the pair of fixed bars 122, preferably the protrusion 128 is a CNC lathe spindle. Protrudes along the tangential direction of rotation.

The protrusion 128 of the protruding engagement piece 124 rotates along the support means 110 and the fixing bar 124 when the main shaft of the CNC lathe rotates for the core semifinished product 1 to be processed. On the side, that is, the core semifinished product 1 is injected over the end of the reinforcement wing 4 of the side on which the bur 5 is formed, whereby the core semifinished product 1 to be subjected to the post-processing operation is the core according to the present invention. It is strongly gripped by the jig 100 for semifinished product processing (refer FIG. 4B).

Hereinafter, the state of use of the jig 100 for processing the semi-finished product formed as described above will be briefly described.

First, the core semi-finished product 1 to be subjected to the post-processing work under the state in which the jig 100 for processing the core semi-finished product according to the present invention is mounted on the spindle of the CNC lathe is inserted into the support means 110 (see FIG. 4A).

Here, the core semifinished product 1 is a core semifinished product 1 in which burrs 5 have been removed by hand, and the core semifinished product 1 is inserted into the support means 110 by manual or manual production of workers. Can lose.

As described above, when the core semifinished product 1 to be subjected to the post-processing work is inserted into the support means 110, the main shaft of the CNC lathe is operated to process the core semifinished product 1.

When the spindle of the CNC lathe is operated, the core pedestal 112 and the core guide 116 of the support means 110 mounted on the spindle of the CNC lathe also rotate along the main axis, and likewise the fixed bar mounted to the core pedestal 112. The rotation of the core semi-finished product (1) fitted to the support means 110 while being in close contact with the reinforcing blades (4) adjacent to the direction of rotation of the main shaft (122) also rotates along the main shaft, the rotation of the main shaft Rotate at the same speed as the speed.

And while the fixing bars 122 are in close contact with the reinforcing blades 4, the protrusions 128 of the engaging pieces 124 mounted to the fixing bars 122 span the ends of the reinforcing blades 4, whereby the core The semifinished product 1 is gripped so as not to be released from the support means 110 (see FIG. 4B).

When the core semifinished product 1 is rotated along the main shaft while being held in the core semifinished product processing jig 100 according to the present invention, the finishing tool is processed, that is, the inner diameter of the inner tube 2 from which the bur 5 is removed. (5 ') side and the outer peripheral surface side of the outer tube (3) in contact with the finishing work on the machining site.

The core semi-finished product jig 100 according to the present invention formed as described above grips the core semi-finished product 1 to perform post-processing work using the rotational force of the CNC lathe spindle. It is possible to prevent the semifinished product 1 from being deformed, thereby increasing the product reliability of the separator winding core 10 to be manufactured.

In addition, the jig 100 for processing the core semifinished product according to the present invention can significantly reduce the time for holding the core semifinished product 1, thereby increasing the yield of the membrane winding core 10.

The core semi-finished product jig 100 as described above is not limited to the configuration and operation of the embodiments described above. The above embodiments may be configured such that various modifications may be made by selectively combining all or part of the embodiments.

100: core semi-finished product jig 110: support means
112: core support 116: core guide
120: core rotation / gripping means 122: fixed bar
124: locking piece 128: protrusion

Claims (7)

In the jig for processing the semi-finished product for fixing the core semi-finished product to the spindle of the CNC lathe for finishing the core semi-finished product,
The jig for semi-finished product processing,
One side has a core support that is mounted to the main shaft facing the end of the main shaft and a core guide extending horizontally outward from the other side of the core pedestal from the other side central portion of the core pedestal, the core guide is post-processing A support means in which an inner tube inside of the core semifinished product to be performed is slidably fitted without shaking, and one side of the core semifinished product fitted along the core guide to the other side of the core pedestal; And
A plurality of fixing bars are formed to extend along the longitudinal direction of the core guide and one end is equidistantly mounted on the other side of the core pedestal so as not to interfere with the core guide, the extension of each of the fixing bar via a screw A locking piece mounted at an end thereof, wherein the fixing bars are disposed between the outer tube and the inner tube of the core semifinished product fitted to the core guide, and the core semifinished product adjacent to the rotational direction of the main shaft when the main shaft is operated. A core rotating / holding means in close contact with the reinforcing blades to rotate the core semifinished product, wherein the engaging pieces are guided along the fixing bar when the main shaft is operated and span the end of the reinforcing blade to grip the core semifinished product on the support means; Including;
The locking pieces are provided in the shape of an ellipse flat plate having one side facing the extension end of the fixed bar,
The engaging pieces are mounted on an extension end of the fixing bar eccentrically so that a protrusion extending outwardly of one side of the fixed bar mating is formed.
The projecting jig for processing the semi-finished product core is projected along the tangential direction of the rotational direction of the main shaft.
delete The method according to claim 1,
The core guide jig for processing the semi-finished product is formed to have a length shorter than the length of the inner tube.
delete The method according to claim 1,
The length of the fixing bar exposed to the outside of the other side of the core pedestal jig for processing the semi-finished product is formed to have a length equal to the length of the width of the core semi-finished product is inserted into the support means.
The method according to claim 1,
The fixing bar is a jig for processing the semi-finished product is placed in contact with the inner diameter of the outer tube to support the outer tube of the core semi-finished product fitted to the support means.
delete

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