KR20030035551A - Mandrel apparatus for expanding by two stages the diameter of the mandrel of tension reel - Google Patents

Abstract

The present invention relates to a two-stage expandable mandrel device of a coil winder that can be used simultaneously in two sleeves of different diameters, with two stages of expansion and contraction of the mandrel itself.

To this end, a primary shaft operated by a square fixed shaft 302 and a primary sliding segment 305a, a primary adjustment segment 306a, and an intermediate segment 303 which are rotatable by a rotation shaft 301 coupled to the center thereof. Secondary diameter operated by the diameter adjusting unit 300, the secondary sliding segment 305b and the secondary adjustment segment 306b and the outer diameter segment 304, the outer diameter operating lever 313 to the intermediate segment 303 It provides a two-stage extended mandrel device of the coil winding machine, characterized in that consisting of the adjusting unit (320).

As such, the two-stage expansion mandrel device according to the present invention enables coil windings of two diameters without a separate sleeve replacement, thereby reducing an operator's workload and simplifying expansion and contraction, thereby reducing operating time. There is.

Description

Two-stage expansion mandrel device of coil winding machine {MANDREL APPARATUS FOR EXPANDING BY TWO STAGES THE DIAMETER OF THE MANDREL OF TENSION REEL}

The present invention relates to a two-stage expandable mandrel device of a coil winder, and more particularly, to a two-stage expanded mandrel of a coil winder that can be used simultaneously in two sleeves having different diameters by expanding and contracting the mandrel itself in two stages. Relates to a device.

In general, as shown in Figure 1, the coil winding (Tension Reel) (1) installed on the exit side of the continuous line wound the coil inner diameter of 508mm or 610mm, using such a coil winding machine (1) When the strip is wound, the mandrel 3 is inserted into the space of the intermediate sleeve 2 made of rubber or plastic to expand and rotate the diameter of the mandrel 3 so that the strip is coiled.

In the conventional mandrel device applied to the mandrel 3 as described above, as shown in FIG. 2, a through hole is inserted into the inner diameter portion of the fixed shaft 104 to insert the rotary shaft 102, and at one end a flange. 107 and the fixing bolt 108 and the fixing nut 109 are connected to one side of the sliding wedge (Sliding Wedge; 103).

Assemble the segment 101 divided into a predetermined number on the outside along the inclined groove of the sliding wedge 103, and one end of the segment 101 using a fixing flange 105 and a fixing bolt 106 To the jaw of the fixed shaft (104).

(A) of sectional drawing of the conventional mandrel apparatus shown in FIG. 3 shows the front cross section of the state before a mandrel expansion, (B) shows the front cross section of the state after an expansion. That is, when the rotating shaft 102 moves from the left side to the right side in the drawing, the flange 107 connected to the end of the rotating shaft 102 and the sliding wedge 103 connected by the fixing bolt 108 are the outer diameter of the fixed shaft 104. Along the right side, and extends to the outer diameter portion along the outer inclined groove of the sliding wedge 103.

That is, the sliding wedge 103 can move left and right, but the segment 101 cannot move left and right, and can only expand and contract in the circumferential direction.

Due to the operation configuration as described above, the conventional mandrel device can only expand or reduce the segment 101 by one step by the left and right movement of the sliding wedge 102, so that only the coil inner diameter of any one diameter can be wound up. If the inner diameter coils of different diameters are to be wound, there is a problem in that the work hassles that need to be wound by inserting the inner diameter sleeves having different diameters into the outer diameter portion of the segment 101, and the manpower loss and time spent therein are wasted. .

In order to solve the above problems, the present invention eliminates the inconvenience of having to replace two types of sleeves of different diameters when winding the strip from the coil winding machine to two types of coils having different inner diameters, and the coil winding machine. It is an object of the present invention to provide a two-stage expandable mandrel device of a coil winder, which can be used simultaneously in two different diameters by its expansion and contraction action.

1 is a schematic perspective view of a typical coil winder;

2 is a cross-sectional view of a conventional mandrel device;

Fig. 3 is a front sectional view of each part showing a state before and after expansion of the conventional mandrel device.

4 is a front view and a perspective view of a fixed shaft constituting a two-stage extended mandrel device according to the present invention;

5 is a perspective view of each part of the two-stage expandable mandrel device according to the present invention;

Figure 6 is a side cross-sectional view showing a state before and after the operation of the primary diameter adjusting portion constituting a two-stage extended mandrel device according to the present invention.

Figure 7 is a front sectional view showing a state before and after the operation of the primary diameter adjusting portion constituting a two-stage extended mandrel device according to the present invention.

Figure 8 is a side cross-sectional view showing a state before and after the operation of the secondary diameter adjusting portion constituting a two-stage extended mandrel device according to the present invention.

Figure 9 is a front sectional view showing a state before and after the operation of the secondary diameter adjusting portion constituting the two-stage expandable mandrel device according to the present invention.

Figure 10 is an enlarged front cross-sectional view showing a state in which the primary and secondary diameter control unit constituting the two-stage expandable mandrel device according to the present invention.

♣ Explanation of symbols for main part of drawing ♣

301: rotary shaft 302: fixed shaft 305a: primary sliding segment

306a: 1st adjustment segment 303: Middle segment 300: 1st diameter adjustment part

305b: 2nd sliding segment 306b: 2nd adjustment segment

304: Outer diameter segment 313: Outer diameter operating lever 320: Secondary diameter adjusting part

In order to achieve the above object, the present invention is a rectangular fixed shaft rotatably coupled to the rotating shaft in the center, the primary adjustment segment seated in the space formed in the corner thereof, and the inner diameter in contact with the outer surface thereof A primary diameter adjusting part comprising an intermediate segment, a secondary adjusting segment seated in a space formed at the center of each intermediate segment constituting the primary diameter adjusting part, and an outer diameter segment forming an outer diameter in contact with an outer surface thereof; It is to provide a two-stage expandable mandrel device of the coil winding machine, characterized in that consisting of the car diameter adjustment portion.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

4 is a front view and a perspective view of a fixed shaft constituting the two-stage extended mandrel device according to the present invention, Figure 5 is a front view and a perspective view of each component constituting the two-stage extended mandrel device according to the present invention.

As shown in FIG. 4, the fixed shaft 302 constituting the two-stage extended mandrel device according to the present invention has a square pillar having a rotating shaft through-hole 315 formed at the center thereof, and is described below at each corner portion. A space 316 in which the sliding segment 305a and the primary adjustment segment 306a may be seated is formed.

In the space 316 of the fixed shaft 302 having the above-described shape, as shown in FIG. 5A, a primary sliding segment 305a having a stepped upper surface is seated, and an upper surface thereof. The primary adjustment segment 306a is seated, the upper surface of the primary adjustment segment 306a is formed to have a predetermined radius of curvature, from which the lower side is formed by the inclined surface 318, the lower surface is The first sliding segment 305a is formed in a step shape corresponding to each other in the step shape of the upper surface, and fasteners 317 are formed at both ends thereof, respectively.

In addition, when the primary adjustment segment 306a is seated on the fixed shaft 302, an intermediate segment having a shape as shown in FIG. 5B is installed in contact with the side inclined surface 318 of the primary adjustment segment 306a. 303 is positioned, and the secondary sliding segment 305b and the secondary adjustment segment 306b described below are seated on the center of the middle segment 303 to form a space portion 319 which can expand and act. In addition, both sides are formed by a circular surface 321 having a predetermined radius of curvature so that the intermediate segment 303 expands upward when the primary adjustment segment 305a extends.

In the upper space portion 319 of the intermediate segment 303 formed as described above, the secondary sliding segment 305b having the same shape as the primary sliding segment 305a but having the upper stepped shape opposite to each other is seated. The upper stepped space portion has the same shape as the primary adjustment segment 306a, but has an upper surface formed of a curved surface with a larger radius of curvature than the primary adjustment segment 305a, and the lower surface stepped shapes in opposite directions. Secondary adjustment segments 306b having both inclined surfaces 323 formed thereon are formed to correspond to each other, and fasteners 324 are formed at both ends of the secondary adjustment segments 306b to form an outer diameter control lever 313. ) Is fastened.

The outer diameter segment 304 which is expanded in contact with the inclined surface 323 of the secondary control segment 306b seated in the above-described configuration and expands the secondary control segment 306b is seated. ) Is formed in a circular arc of 1/4 having an outer surface and an inner surface having a predetermined radius of curvature, and a flat portion 325 contacting the inclined surface 323 of the secondary control segment 306b is formed at both sides. It is.

6 is a side cross-sectional view showing the overall configuration of a two-stage extended mandrel device according to the present invention.

In the two-stage expansion-type mandrel device according to the present invention, which is arranged in the configuration described above, as shown in FIG. 6, first, a through-hole 315 is formed inside the fixed shaft 302 of the square pillar to rotate the shaft. 301 is inserted, and the corner portion thereof is machined with a U-shaped space 316 to mount the primary sliding segment 305a and the primary adjustment segment 306a, and fix it to the end of the rotary shaft 301. The primary sliding segment 305a is fixed by using the plate 310 and the fixing bolt 307.

When the rotary shaft 301 is pulled inward during expansion, the primary sliding segment 305a of the end portion and the bolted portion 307 is expanded by pushing the primary adjustment segment 306a upward. First expansion.

The other end of the rotary shaft 301 is installed so as to be movable in the axial direction by mounting a rotary cylinder and a rotary joint used for a conventional mandrel, an intermediate segment 303 is mounted on the outside of the fixed shaft 302 In addition, the outer diameter portion of the intermediate segment 303 is machined into a groove so that the secondary sliding segment 305b and the secondary adjustment segment 306b are mounted, and the outer diameter segment 304 is mounted on the outer surface thereof. .

The first inner side cover 309 is fixed to the fixing bolt 307 at one end of the secondary sliding segment 305b, and the outer diameter control lever 313 is fixed to the first inner side cover 309. A second inner side cover 308 is attached to the inner side of the outer diameter segment 304 mounted on the outer side of the primary adjustment segment 306b and the middle segment 303, and the secondary adjustment segment 306b and the middle segment ( A first outer side cover 311 is attached to the outside of the 303, and a second outer side cover 312 is attached to the outside of the outer diameter segment 304 to prevent movement in the axial direction and to expand only in the circumferential direction. Fix it to be collapsible.

The method of fixing the intermediate segment 303 and the outer diameter segment 304 to the fixing shaft 302 is always in close contact with the inner diameter direction by the force of the spring by fixing using a fixing bolt and a spring in a conventional mandrel fixing method. Is assembled so that the secondary sliding segment 305b can be expanded in the outer diameter direction as it moves in the axial direction.

The two-stage expandable mandrel device configured as described above is used by complementing the outer diameter of the first and second diameters when the primary and secondary diameters are expanded or reduced by mounting the sleeve 2 of rubber or plastic.

Figure 7 is a side cross-sectional view showing a state before and after the operation of the primary diameter adjusting portion constituting the two-stage extended mandrel device according to the present invention, Figure 8 is the operation of the primary diameter adjusting portion constituting the two-stage extended mandrel device according to the present invention Figure 11 is a front sectional view showing a front and rear state, Figure 11 is a front sectional view showing a state in which the primary and secondary diameter adjusting unit constituting the two-stage extended mandrel device according to the present invention.

As shown in Figures 7 to 8 and 11, the operating relationship of the primary diameter adjusting unit 300 constituting the two-stage expansion-type mandrel device according to the present invention is a rotary shaft installed inside the fixed shaft 302 ( When the 301 is moved from the right side to the left side in the axial direction, the primary sliding segment 305a is moved to the left side by the fixing plate 310, and is mutually mounted in a step shape assembled on the outside thereof. The first adjustment segment 306a is raised, and the first adjustment segment 306a is fixed in the axial direction by the first inner side cover 309 and the first outer side cover 311. The intermediate segment 303 expands in the outer diameter direction by the rise of the primary adjustment segment 306a.

Figure 9 is a side cross-sectional view showing a state before and after the operation of the secondary diameter adjustment unit constituting a two-stage extended mandrel device according to the present invention, Figure 10 is the operation of the secondary diameter adjustment unit constituting a two-stage extended mandrel device according to the present invention Figure 11 is a front sectional view showing a front and rear state, Figure 11 is a front sectional view showing a state in which the primary and secondary diameter adjusting unit constituting the two-stage extended mandrel device according to the present invention.

9 to 11, the operation relationship of the secondary diameter adjusting unit 300 constituting the two-stage expandable mandrel device according to the present invention is the secondary sliding segment 305b in the first extended state When the outer diameter adjusting lever 313 and the first inner side cover 309 are moved in the axial direction, that is, from the left to the right in the related degree, the secondary sliding segment 305b becomes 2 by the same operating relationship as the first expansion. The differential adjustment segment 306b is raised, thereby expanding the outer diameter segment 304. The driving force of the outer diameter control lever 313 is possible by various methods such as a driving cylinder.

As described above, by the two-stage expansion type mandrel device according to the present invention, the primary diameter can be expanded to the desired outer diameter by the primary diameter adjusting unit, and the diameter of the mandrel can be expanded to the desired outer diameter by the secondary diameter adjusting unit. Therefore, the coil can be wound without a separate sleeve replacement, thereby reducing the work load of the driver, and it is possible to simply expand and contract the operation time.

Claims (3)

A square fixed shaft 302 rotatably coupled with a rotation shaft 301 at the center thereof, a primary sliding segment 305a and a primary adjustment segment 306a seated in a space formed at an edge thereof, and an outer surface thereof. Primary diameter adjusting unit 300 consisting of a middle segment 303 in contact with the inner diameter and a fixed plate 310 for fastening the primary sliding segment 305a to the rotary shaft 301 and the fixed shaft 302. )Wow; The secondary sliding segment 305b and the secondary adjustment segment 306b seated in a space formed at the center of each intermediate segment 303 constituting the primary diameter adjusting unit 300 and the outer diameter in contact with the outer surface thereof. The secondary diameter adjusting part 320 includes an outer diameter segment 304, a first inner side cover 309 for fixing the secondary sliding segment 305b, and an outer diameter operating lever 313 fixed thereto. Two-stage expansion type mandrel device of the coil winding machine, characterized in that the configuration. The method of claim 1, The primary diameter adjusting unit 300 is a two-stage expansion type of the coil winding machine, characterized in that the diameter is expanded by the movement of the rotary shaft 301 and the fixed shaft 302 fixing the primary sliding segment 305a. Mandrel device. The method of claim 1, The secondary diameter adjusting unit 310 is characterized in that the diameter is expanded by the left and right movement of the outer diameter operating lever 313 is fixed to the first inner side cover 309 for fixing the secondary adjustment segment (306b) 2-stage expansion mandrel unit of coil winding machine.