KR102005151B1 - Inside diameter extension apparatus for ring - Google Patents

Abstract

The present invention provides an inner diameter expanding device of a ring which can easily and efficiently expand the inner diameter of the ring.
An inner diameter expanding device of a ring according to one aspect of the present invention includes an expanding rod having an inner passage formed therein and having a slit formed on an outer surface thereof, a tapered rod inserted in the inner passage and configured to be movable in the height direction of the inner passage, Wherein the tapered rod includes a cylindrical portion having an outer diameter uniform and having a workpiece inserted therein, the inner passage gradually decreasing in inner diameter toward the upper portion, and the tapered rod And the outer diameter gradually decreases toward the upper part.

Description

[0001] INSIDE DIAMETER EXTENSION APPARATUS FOR RING [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inner diameter expanding apparatus, and more particularly to an apparatus for expanding the inner diameter of a ring.

Generally, the rings to be fitted to the fingers are formed by different diameters of the rings according to the thickness of the fingers, and accordingly rings of various sizes are required according to the dimensions. These rings are formed by expanding the rings in a predetermined size They are made of rings with diameters of different sizes for each dimension.

When processing rings made of alloy materials with high hardness, a ring is usually put on the outer peripheral surface of the tapered roller, and a tool such as a hammer is used to strike the outer surface of the ring, thereby gradually expanding the inner diameter gradually. It is mainly used.

However, the above-mentioned hand tool method consumes a considerable amount of time for processing the ring, and at the same time, it requires a highly skilled function. In particular, the outer surface of the ring has a curved surface, A finishing grinding operation is required. Therefore, it takes a considerable time to match the weight of gold in consideration of the fact that the surface of gold is shaved at the time of grinding work.

In addition, since the conventional expanding device works by inserting a ring into a tapered column, there is a problem that the lower part can not be expanded while the upper part of the ring is expanded.

Korean Registered Utility Model No. 20-0320833 (2003.07.09)

The present invention provides an inner diameter expanding device of a ring which can easily and efficiently expand the inner diameter of the ring.

An inner diameter expanding device of a ring according to one aspect of the present invention includes an expanding rod having an inner passage formed therein and having a slit formed on an outer surface thereof, a tapered rod inserted in the inner passage and configured to be movable in the height direction of the inner passage, Wherein the tapered rod includes a cylindrical portion having an outer diameter uniform and having a workpiece inserted therein, the inner passage gradually decreasing in inner diameter toward the upper portion, and the tapered rod And the outer diameter gradually decreases toward the upper part.

Here, the cylindrical portion is divided into a plurality of regions having different outer diameters, and the regions may be separated by steps.

The rod may also include a plurality of rod segments, the rod segments having a circular circumferential surface and two planes connected to the circumferential surface, the planes being arranged to face the planes of adjacent rod segments .

Further, the bar piece may include a lower flange inserted into the fixing member and having a long hole, and the support pin may be inserted into the long hole.

In addition, a seating groove may be formed in the extension bar, and an elastic member may be installed in the seating groove to press the extension bar while pressing the extension bar.

In addition, the inner diameter expanding device of the ring may include a support plate having a guide groove formed therein to support the expanding bar under the expanding bar, and a guide plate provided on the support plate, And two fixing members are provided on the supporting plate, and a supporting groove into which the lower flange is inserted may be formed in the fixing members.

Further, the fixing member may be provided with a fixing hole, the fixing groove may be formed in the supporting plate, and the fixing groove may be provided with a fixing rod passing through the fixing hole and being screwed into the fixing groove, And may include a column portion inserted into the fixing groove and a handle portion protruding laterally from the column portion.

The transfer unit may include a lead screw extending in one direction, a transfer nut coupled to the lead screw, and a motor for rotating the lead screw.

In addition, the extension bar may include a base portion formed of one body and a plurality of flow bars integrally formed with the base portion and projecting onto the base, and slits may be formed between the flow bars.

The inner diameter expanding device of the ring according to one aspect of the present invention includes an expanding rod including a cylindrical portion and a tapered rod so that when the conveying portion conveys the tapered rod upwardly, the inner diameters of the upper and lower portions of the ring can be expanded simultaneously.

1 is a perspective view illustrating an inner diameter expanding apparatus of a ring according to an embodiment of the present invention.
2 is an exploded perspective view illustrating an inner diameter expanding device of a ring according to an embodiment of the present invention.
3 is a perspective view illustrating a transferring portion of the inner diameter expanding device of the ring according to an embodiment of the present invention.
4 is an exploded perspective view illustrating an extension rod of an inner diameter expanding device of a ring according to an embodiment of the present invention.
5 is a perspective view illustrating a rod piece of an inner diameter expanding device of a ring according to an embodiment of the present invention.
6 is an exploded perspective view showing a support plate fixing member and a fixing rod according to an embodiment of the present invention.
7 is an exploded perspective view showing an extension rod and a tapered rod of an inner diameter expanding device of a ring according to another embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

Throughout the specification, when an element is referred to as "comprising ", it means that it can include other elements as well, without excluding other elements unless specifically stated otherwise. Also, the terms " part, "" module," and " module ", etc. in the specification mean a unit for processing at least one function or operation and may be implemented by hardware or software or a combination of hardware and software have.

FIG. 1 is a perspective view illustrating an inner diameter expanding device of a ring according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view illustrating an inner diameter expanding device of a ring according to an embodiment of the present invention.

1 and 2, the inner diameter enlarging device 100 of the ring according to the present embodiment includes an expanding rod 10, a tapered rod 20, a feeder 50, a fixing member 31, (61), and a lower plate (62).

The lower plate 62 and the support plate 61 are arranged to face each other and are supported by the column 63. A plurality of wall surfaces 64 may be provided between the lower plate 62 and the support plate 61. The lower plate 62, the support plate 61, and the wall surface 64 can form a rectangular box-shaped housing.

FIG. 3 is a perspective view illustrating a transferring portion of an inner diameter expanding device of a ring according to an embodiment of the present invention.

2 and 3, the transfer unit 50 moves the tapered bar 20 in the vertical direction and includes a motor 51, a bracket assembly 52, a linear guide 53, a power transmitting member 54 A lead screw 56, and a feed nut 57. The feed screw 57, as shown in FIG.

The motor 51 is connected to the lead screw 56 to rotate the lead screw 56 and can be made of a conventional motor 51. A gear box for deceleration may be connected to the motor 51.

The motor 51 and the lead screw 56 may be connected via a power transmitting member 54 such as a belt or a chain. However, the present invention is not limited to this, and the motor 51 may be directly connected to the lead screw 56. The feed nut 57 is engaged with the lead screw 56 and moves in the longitudinal direction of the lead screw 56 in accordance with the rotation of the lead screw 56.

Meanwhile, the feed nut 57 is fixed to the bracket assembly 52, and the tapered rod 20 can be fixed to the upper surface of the bracket assembly 52. The bracket assembly 52 may be composed of a plurality of plates for connecting and supporting the feed nut 57 and the tapered rod 20. [ Further, a linear guide 53 for guiding the movement of the bracket assembly 52 is connected to the bracket assembly 52. The linear guide 53 may include a rail 531 fixed to the wall surface and a mover 532 moving along the rail 531. When the linear guide 53 is installed as in the present embodiment, the tapered rod 20 can be more stably transported.

The tapered rod 20 is inserted into the inner passage 13 formed in the expanding rod 10 so as to be movable in the vertical direction, The tapered rod 20 can press the extension rod 10 while moving upward to increase the outer diameter of the extension rod 10.

The tapered rod 20 may be formed to gradually decrease its outer diameter toward the upper portion. The tapered rod 20 includes a lower base 21 fixed to the bracket assembly 52, (23). The pressing portion 23 may have a truncated cone shape whose outer diameter progressively decreases toward the upper portion.

FIG. 4 is a perspective view showing an extension rod of an inner diameter expanding device of a ring according to an embodiment of the present invention, and FIG. 5 is a perspective view illustrating a rod piece of an inner diameter expanding device of a ring according to an embodiment of the present invention .

4 and 5, the expanding bar 10 has a cylindrical shape, and a plurality of slits 12 may be formed on the outer periphery of the expanding bar 10. As shown in FIG. To this end, the extension bar 10 may comprise a plurality of rod pieces 11. The expanding bar 10 according to the present embodiment may include six rod pieces 11. However, the present invention is not limited thereto, and it is sufficient that the extension rod 10 includes two or more rod pieces.

Each bar piece 11 may include two planes 113 and 114 connecting a circumferential surface 112 and a circumferential surface 112 of an arcuate shape. The planes 113 and 114 of the rod pieces 11 are arranged to face the planes 113 and 114 of neighboring rod pieces 11 and the circumferential surfaces 112 of the rod pieces 11 are connected Form a cylinder. A plurality of stepped portions 15 may be formed on the circumferential surface 112 of the rod pieces 11.

The enlarged bar 10 may include a cylindrical portion CP having an outer diameter uniform and having a workpiece inserted therein. The cylindrical portion CP may include a plurality of regions S1 , S2, S3, S4, S5, S6). In the present embodiment, the cylindrical portion CP is divided into six regions S1, S2, S3, S4, S5, and S6, but the present invention is not limited thereto. Or more.

The zones S1, S2, S3, S4, S5 and S6 located below the cylindrical portion CP have a larger outer diameter than the zones S1, S2, S3, S4, S5, Respectively. If a step is formed in the cylindrical portion CP and each of the sections S1, S2, S3, S4, S5, and S6 has different outer diameters as in the present embodiment, one extension rod 10 is used Different sizes of rings can be machined.

On the other hand, the rod pieces 11 include an arc-shaped inner surface 115, the width of the inner surface 115 of the rod pieces 11 gradually decreasing toward the top. The inner surfaces 115 of the rod pieces 11 may be connected to one another to form the inner passageway 13. Accordingly, the inner passage 13 is formed at the center of the expanding rod 10, and the inner diameter of the inner passage 13 can be gradually reduced toward the upper portion.

The inclination angle between the inner surface of the inner passage 13 and the upper surface of the support plate 61 is D1 and the inclination angle between the outer surface of the tapered bar 20 and the upper surface of the support plate 61 is D2, D1 is D2 As shown in FIG.

A first seating groove 16 extending along the periphery of the cylindrical portion CP is formed on the upper portion of the enlarged bar 10. The upper seating groove 16 has an upper elastic member 71 formed in a ring shape Can be installed. A second seating groove 17 extending along the circumference of the cylindrical portion CP is formed in the lower portion of the extension rod 10 and a lower elastic member 72 formed in a ring shape may be installed in the second seating groove 17 have.

The upper elastic member 71 and the lower elastic member 72 may be formed of compression springs and support the rod pieces 11 in a circular shape. Further, the upper elastic member 71 and the lower elastic member 72 press the gap between the rod pieces 11 to decrease as the tapered rod 20 moves downward.

A lower flange 18 extending outwardly is formed at the lower end of the extension rod 10, and a long hole 19 may be formed in the lower flange 18. The long hole 19 is formed of a hole extending in the radial direction of the lower flange 18 and extends to the outer surface of the lower flange 18 so that the side surface can be opened. A guide pin 39 for guiding the movement of the rod pieces 11 may be inserted into the long hole 19.

6 is an exploded perspective view showing a support plate fixing member and a fixing rod according to an embodiment of the present invention.

2 and 6, on the upper surface of the support plate 61, two guide grooves 612 extending in the width direction of the support plate 61 are formed. The guide groove 612 may extend from one side surface to the other side surface of the support plate 61.

And may extend laterally in the lower portion of the guide groove 612. Between the guide grooves 612, two fixing grooves 613 into which the fixing rod 32 is inserted and a pin groove 614 into which the support pin 39 is inserted may be formed. A circular hole 615 through which the tapered rod 20 passes is formed at the center of the support plate 61.

On the support plate 61, two fixing members 31 for fixing the extension rod 10 may be provided. The fixing member 31 includes two guide protrusions 312 that are inserted into the guide groove 612 and the guide protrusion 312 is slidably installed in the guide groove 612.

Two guide protrusions 312 are formed on the fixing member 31. The guide protrusions 312 protrude outward from both lower ends of the fixing member 31 and extend along the side ends of the fixing member 31 .

The fixing member 31 is formed with a support groove 313 into which the lower flange 18 is inserted and the two fixing members 31 abut against each other to support the expanding rod 10. On the upper surface of the fixing member 31, an opening 314 is formed so that the expanding rod 10 can penetrate.

The fixing member 31 is formed with a fixing hole 315 into which the fixing rod 32 is inserted and is fixed to the supporting plate 61 by the fixing rod 32. The fixing rod 32 may include a column portion 321 penetrating through the fixing hole 315 and inserted into the fixing groove 613 and a handle portion 323 projecting laterally from the column portion 321. A screw thread is formed on the outer peripheral surface of the column portion 321, and the fixing rod 32 can be screwed into the fixing groove 613. [

Hereinafter, the operation according to the present embodiment will be described.

Two fixing members 31 are slidably moved so as to surround the lower flange 18 of the extension rod 10 in a state where the extension rod 10 is mounted on the support plate 61. The fixing rod 32 passes through the fixing member 31 and is inserted into the fixing groove 613 so that the fixing rod 32 rotates and is screwed into the fixing groove 613. [

When the ring is inserted into the extension rod 10 and the ring is located in a region corresponding to the size of the ring, the transfer portion 50 transfers the tapered rod 20 upward to increase the outer diameter of the extension rod 10. At this time, the rod pieces 11 can be guided by the guide pin 39 inserted in the slot 19, and can move in the radial direction of the expanding rod 10.

At this time, the expanding bar 10 has a cylindrical shape, and since the inner surface of the expanding bar 10 and the outer surface of the tapered bar 20 have the same inclination, the cylinders of the same area extend to the same radius. So that the upper and lower portions of the ring can be expanded at the same time.

When the expansion molding of the ring is completed, the tapered rod 20 is moved downward by the transferring part 50, and the expanding rod 10 is pressed by the upper elastic member 71 and the lower elastic member 72, can do.

As described above, according to the present embodiment, since the cylindrical portion CP of the extension rod 10 is expanded by the transfer portion 50, the inner diameters of the upper and lower portions of the ring can be expanded at once. Further, since the rod pieces 11 are supported by the elastic members and are guided and moved to the support pins 39, they can be expanded more easily and stably.

7 is an exploded perspective view showing an extension rod and a tapered rod of an inner diameter expanding device of a ring according to another embodiment of the present invention.

7, the inner diameter expanding device of the ring according to the present embodiment has the same structure as the inner diameter expanding device of the ring according to the first embodiment except for the extension rod and the tapered rod. Duplicate descriptions are omitted.

The extension bar 210 may include a base portion 214 formed of one body and a flow bar 211 formed to extend to the upper portion of the base portion 214 and separated into a plurality of pieces. The base portion 214 is formed in a cylindrical shape and the flow bars 211 are separated by a plurality of slits 212. The lower ends of the flow rods 211 are integrally formed with the base portion 214 and are fixed to the base portion 214 so that the side surfaces of the flow rods 211 are spaced apart from the side walls of the adjacent flow rods 211 by slits 212 Can be spaced apart from each other.

An inner passage 213 is formed in the extension rod 210 to insert the tapered rod 220. The inner passage 213 may be formed so that the inner diameter decreases toward the upper portion. A cylindrical portion CP is formed outside the extension rod 210 and a plurality of regions having different outer diameters may be divided by the step 215 in the cylindrical portion CP.

The tapered rod 220 may be formed such that the outer diameter gradually decreases toward the upper portion of the tapered rod 220. The tapered rod 220 includes a lower base 221 fixed to the bracket assembly and a pressing portion 223 ). The pressing portion 223 may have a truncated cone shape whose outer diameter gradually decreases toward the upper portion.

A first seating groove 216 is formed on the upper portion of the extension bar 210 and a second seating groove 217 is formed on the lower portion of the extension bar 210. The first seating groove 216 is provided with an upper elastic member 271 for pressing and pressing the extension bar 210 while the lower seating member 217 is provided with a lower elastic member 210 for covering the extension bar 210, (Not shown).

The upper elastic member 271 and the lower elastic member 272 may be formed of an annular band wherein the upper elastic member 271 and the lower elastic member 272 are made of elasticity and elasticity such as rubber, ). ≪ / RTI >

As described above, according to the present embodiment, since the slits 212 are formed between the plurality of flow rods 211, and the flow rods 211 are integrally formed and fixed with the base 214, Can be installed on the support plate more easily.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, It belongs to the scope of right.

100, 200: Inner diameter expansion device of the ring
10, 210: Extension rod
11: Rod sculpture
15: Step
16: first seat groove
17: second seat groove
18: Lower flange
19: Slots
20, 220: tapered bar
21: Lower base
23:
31: Fixing member
32: Fixed rod
61: Support plate
62: Lower plate
50:
51: Motor
52: Bracket assembly
53: Linear guide
54: Power transmission member
56: Lead Screw
57: Feed nut
71: upper elastic member
72: lower elastic member
CP: Cylinder part
S1, S2, S3, S4, S5, S6: Zone

Claims (9)

delete delete delete An extension rod having an inner passage formed therein and a slit formed on an outer surface thereof;
A tapered rod inserted in the inner passage and movable in a height direction of the inner passage; And
A transfer unit for moving the tapered bar in a vertical direction;
/ RTI >
Wherein the extension rod includes a cylindrical portion having an outer diameter uniform and in which the workpiece is inserted,
The inner diameter of the tapered rod gradually decreases toward the upper portion, and the outer diameter of the tapered rod gradually decreases toward the upper portion,
Wherein the extension bars comprise a plurality of rod segments, the rod segments having a circumferential surface having an arcuate shape and two planar surfaces connected to the circumferential surface, the planes being arranged to face the planes of neighboring rod segments,
Wherein the rod piece includes a lower flange inserted into the fixing member and having a long hole, and a support pin is inserted into the long hole. delete 5. The method of claim 4,
The inner diameter expanding device of the ring includes a support plate having a guide groove formed therein to support the extension rod under the expanding bar, and a guide plate provided on the support plate and slidably coupled to the guide groove, And a fixing member having a guide projection to be engaged with the fixing member,
Wherein two fixing members are provided on the support plate, and a supporting groove into which the lower flange is inserted is formed in the fixing members. The method according to claim 6,
A fixing hole is formed in the fixing member, a fixing groove is formed in the supporting plate, and a fixing rod penetrating the fixing hole and screwed into the fixing groove is provided in the fixing groove,
Wherein the fixing rod includes a column portion inserted into the fixing groove and a handle portion protruding laterally from the column portion. delete delete

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