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Title:
WIRE SAW CONNECTOR AND DIAMOND WIRE SAW CONNECTED BY THE CONNECTOR
Document Type and Number:
WIPO Patent Application WO/2008/140217
Kind Code:
A1
Abstract:
There is provided a wire saw connector that is used to cut stones or concrete structures and able to improve the bonding force between a wire rope and a connection shank, and simultaneously facilitate the connection of the wire rope, and a wire saw having both ends coupled through the wire saw connector. The wire saw connector comprises one connection shank including a first wire rope fixing part having an inner portion processed in the form of a screw to fix one end of a wire rope, and a first shank coupling part including a connection part having a first connector pin through hole formed therein; the other connection shank including a second wire rope fixing part having an inner portion processed in the form of a screw to fix the other end of the wire rope, and a second shank coupling part having a second connector pin through hole formed in a position corresponding to the first connector pin through hole; and a connector pin inserted into the second connector pin through hole and the first connector pin through hole to couple the two connection shanks to each other, and the wire saw has both ends coupled through the wire saw connector.

Inventors:
SUNG KYUNG YONG (KR)
Application Number:
PCT/KR2008/002607
Publication Date:
November 20, 2008
Filing Date:
May 09, 2008
Export Citation:
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Assignee:
EHWA DIAMOND IND CO LTD (KR)
SUNG KYUNG YONG (KR)
International Classes:
B28D1/08
Foreign References:
US5718216A1998-02-17
KR20050014522A2005-02-07
KR20060018980A2006-03-03
Attorney, Agent or Firm:
C & S LOGOS PATENT AND LAW OFFICE (Seocho-Pyunghwa Building1451-34 Seocho-dong, Seocho-gu, Seoul 137-070, KR)
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Claims:

Claims

[1] A wire saw connector, comprising: one connection shank including a first wire rope fixing part having a first accommodation hole formed therewithin to accommodate one end of a wire rope of a wire saw, an inner portion of the first accommodation hole being processed in the form of a screw to fix the one end of the wire rope, and a first shank coupling part formed integrally with the first wire rope fixing part and including a connection part extended in the same direction as a direction where the one end of the wire rope is inserted into the first accommodation hole, and having a first connector pin through hole formed therein; the other connection shank including a second wire rope fixing part having a second accommodation hole formed therewithin to accommodate the other end of the wire rope of the wire saw, an inner portion of the second accommodation hole being processed in the form of a screw to fix the other end of the wire rope, and a second shank coupling part formed integrally with the second wire rope fixing part and including a connection part accommodating hole to accommodate the connection part, and having a second connector pin through hole formed in a position corresponding to the first connector pin through hole with the connection part being accommodated into the connection part accommodating hole; and a connector pin inserted into the second connector pin through hole and the first connector pin through hole to couple the two connection shanks to each other.

[2] The wire saw connector of claim 1, wherein the connector pin is at least one selected from the group consisting of a connector pin having a screw element processed to its length of 1/4 or more in the form of a screw; a connector pin having a cylindrical body including a hexagonal groove formed thereinside; a connector pin having an anti-slip grooves formed therein; a connector pin having a head portion formed in a hexagonal wrench shape; and a connector pin having a head portion formed in the form of a regular (-) or Philips head (+) screwdriver.

[3] A wire saw having both ends coupled to each other through the wire saw connector defined in claim 1 or 2.

Description:

Description

WIRE SAW CONNECTOR AND DIAMOND WIRE SAW CONNECTED BY THE CONNECTOR

Technical Field

[I] The present invention relates to a wire saw that is used to cut stones or concrete structure, and more particularly, to a wire saw connector capable of coupling both ends of a wire saw to each other, and a wire saw having both ends coupled through the wire saw connector.

Background Art [2] A wire saw is used to cut stones or concrete structures, etc., and a length of the wire saw may be adjusted to a suitable length range, depending on the size of a workpiece to be cut. [3] That is to say, the wire saw has an advantage that it may be used to cut a workpiece without any of limitations on the sizes and shapes of the workpiece to be cut. [4] In order to cut a workpiece using a wire saw, both ends of the wire saw should be coupled to each other, and the wire saw should then be mounted onto a wire saw machine. [5] FIG. 1 shows one example of a conventional cutting operation of cutting a workpiece using a wire saw whose both ends are coupled to each other. [6] As shown in FIG. 1, the wire saw 1 is wound around a workpiece 2 to be cut, and mounted onto a driving pulley 31, and a wire saw machine 3 is handled so that a constant tension is applied to the wire saw 1. [7] When a power is applied to the wire saw machine 3, the workpiece 2 is cut by the wire saw 1 of the wire saw machine 3 that is rotated with the rotation of the driving pulley 31. [8] As the cutting of the workpiece goes on, the wire saw machine continuously moves back to cut the workpiece.

[9] In FIG. 1, reference numeral 11 represent bead tips.

[10] Meanwhile, the wire saw 1 includes a wire rope 100 into which steel wires are twisted; and a plurality of bead tips 11 coupled to the circumference of the wire rope

100 at a constant distance, as shown in FIG. 2.

[I I] Each of the bead tips includes abrasive materials such as diamond, etc.

[12] The manufacture of the wire saw 1 is generally carried out by applying an adhesive on diamond bead tips 11, arranging the diamond bead tips 11 on a wire rope 100 at a constant distance, and injection-molding the wire rope 100 using a rubber, urethane or the like.

[13] In FIG. 2, reference numeral 6 represents a spacer.

[14] In order to cut a workpiece using a wire saw, it is necessary to couple both ends of the wire saw to each other. [15] In order to couple both ends of the wire saw to each other, a hollow cylindrical connector 5 is used in the art, as shown in FIG. 2. [16] However, when the both ends of the wire saw are coupled to each other using the hollow cylindrical connector, bead tips adjacent to the connector may be seriously worn during a cutting operation of a workpiece having a high curvature since the connector is long and not bent. [17] Also, the use of the hollow cylindrical connector may be uncomfortable since both ends of the wire saw are coupled at the same time. [18] In order to solve the above problems regarding the use of the hollow cylindrical connector, US Patent Nos. 5,645,039 and 5,718,216 and US Patent Publication No.

2001/0023692 disclose several technologies. According to the technologies, the connector is divided into three or four sections, and the sections of the connector are coupled through connector pins, and therefore the connector may be easily bent around its connection regions. [19] However, when the connector pin is divided into three or four sections, the connector has an advantage that it is easily bent in its connection regions, but has problems that a bonding force between a wire rope and a connection shank is low and it is difficult to couple the connector pin to a connection shank. [20]

Disclosure of Invention

Technical Problem

[21] The present invention is designed to solve the problems regarding the bonding force and bonding scheme of a connector pin for coupling both ends of a wire saw, and therefore it is an object of the present invention to provide a wire saw connector capable of improving the bonding force between a wire rope and a connection shank, and simultaneously facilitating the connection of the wire rope, and a wire saw whose both ends are coupled to each other through the wire saw connector.

[22]

Technical Solution

[23] Hereinafter, exemplary embodiments of the present invention will be described in detail.

[24] According to an aspect of the present invention, there is provided a wire saw connector including one connection shank including a first wire rope fixing part having a first accommodation hole formed therewithin to accommodate one end of a wire rope

of a wire saw, an inner portion of the first accommodation hole being processed in the form of a screw to fix the one end of the wire rope, and a first shank coupling part formed integrally with the first wire rope fixing part and including a connection part extended in the same direction as a direction where the one end of the wire rope is inserted into the first accommodation hole, and having a first connector pin through hole formed therein; the other connection shank including a second wire rope fixing part having a second accommodation hole formed therewithin to accommodate the other end of the wire rope of the wire saw, an inner portion of the second accommodation hole being processed in the form of a screw to fix the other end of the wire rope, and a second shank coupling part formed integrally with the second wire rope fixing part and including a connection part accommodating hole to accommodate the connection part, and having a second connector pin through hole formed in a position corresponding to the first connector pin through hole with the connection part being accommodated into the connection part accommodating hole; and a connector pin inserted into the second connector pin through hole and the first connector pin through hole to couple the two connection shanks to each other.

[25] Also, according to another aspect of the present invention, there is provided a wire saw having both ends coupled to each other through the wire saw connector according to one exemplary embodiment of the present invention.

Advantageous Effects

[26] As described above, one aspect of the present invention provides a wire saw connector capable of improving the bonding force between the wire rope and the connection shank, and simultaneously facilitating the connection of the wire rope. [27] Another aspect of the present invention provides a wire saw whose both ends are coupled to each other through the wire saw connector. [28]

Brief Description of the Drawings [29] FIG. 1 is a schematic view illustrating a conventional cutting process using a wire saw. [30] FIG. 2 is a schematic view illustrating that a conventional connector pin is coupled to both ends of a wire saw. [31] FIG. 3 is a schematic view illustrating that a connector according to one exemplary embodiment of the present invention is coupled to both ends of a wire saw. [32] FIG. 4 is a schematic view illustrating a wire saw connector according to one exemplary embodiment of the present invention in which a connection shank is coupled to a connector pin according to the present invention. [33] FIG. 5 is an exploded cross-sectional view illustrating the wire saw connector

according to one exemplary embodiment of the present invention.

[34] FIG. 6 is a schematic view illustrating examples of the connector pin that may be used in the present invention.

[35]

Best Mode for Carrying Out the Invention

[36] Hereinafter, exemplary embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

[37] The present invention applies to a wire saw that is used to cut stones, reinforced concrete or the like.

[38] The cutting of a workpiece using the wire saw is carried out by mounting a wire saw onto a driving pulley and a workpiece (i.e., stones or reinforced concrete) and rotating the wire saw within a constant rotation range, the driving pulley being rotated in a fixed direction by the wire saw machine.

[39] In order to cut a workpiece using a wire saw, both ends of the wire saw should be coupled to each other using a connector pin, etc.

[40] According to the present invention, the wire saw connector for coupling both ends of the wire saw is improved.

[41] The wire saw connector according to one exemplary embodiment of the present invention includes one connection shank including a first wire rope fixing part fixing one end of a wire rope, and a first shank coupling part; the other connection shank including a second wire rope fixing part fixing the other end of the wire rope, and a second shank coupling part; and a connector pin coupling the two connection shanks to each other.

[42] The first wire rope fixing part functions to fix one end of the wire rope, and has a first accommodation hole formed therewithin to accommodate one end of a wire rope of a wire saw, an inner portion of the first accommodation hole being processed in the form of a screw.

[43] That is to say, the one end of the wire rope is fixed in a fixing manner of accommodating one end of the wire rope into the first accommodation hole and fixing the one end of the wire rope.

[44] As described above, when the inner portion of the first wire rope fixing part is processed in the form of a screw, the bonding force between the wire rope and the connection shank may be further improved, for example, by approximately 30%.

[45] That is to say, a contact area between an inner portion of the first wire rope fixing part and the wire rope is increased when the inner portion of the first wire rope fixing part is processed in the form of a screw, which leads to the improved bonding force between the wire rope and the connection shanks.

[46] The first shank coupling part is formed integrally with the wire rope fixing part, and includes a connection part extended in the same direction as a direction where one end of the wire rope is inserted into the first accommodation hole.

[47] Also, a first connector pin through hole is formed in the first shank coupling part.

[48] The second wire rope fixing part functions to fix the other end of the wire rope, and has a second accommodation hole formed therewithin to accommodate the other end of the wire rope of the wire saw, an inner portion of the second accommodation hole being processed in the form of a screw.

[49] That is to say, the other end of the wire rope is fixed in the same fixing manner as the one end of the wire rope, for example, by accommodating the other end of the wire rope into the second accommodation hole and fixing the other end of the wire rope.

[50] As described above, when the inner portion of the second wire rope fixing part is processed in the form of a screw, the bonding force between the wire rope and the connection shank may be further improved, for example, by approximately 30%.

[51] The second shank coupling part includes a connection part accommodating hole accommodating the connection part. Here, a second connector pin through hole is formed in a position corresponding to the first connector pin through hole while the connection part is accommodated into the connection part accommodating hole.

[52] The two connection shanks are coupled to each other by inserting the connector pin into the second connector pin through hole and the first connector pin through hole.

[53] The connector pin used in the present invention preferably includes a connector pin having a rotation angle of 45 (degrees) or more when two connection shanks are coupled to a connection pin, but the present invention is not particularly limited thereto.

[54] Also, another preferred examples of the connector pin used in the present invention includes a connector pin processed to its length of 1/4 or more in the form of a screw; a connector pin having a head portion formed in the form of a regular (-) or Philips head (+) screwdriver; a connector pin having a head portion formed in a hexagonal wrench shape; a connector pin having a cylindrical body including a hexagonal groove formed thereinside; a connector pin having anti-slip grooves formed in a head portion thereof; and the like.

[55] The connection of the wire saw using the connector pin is carried out by coupling connection shanks to both ends of a wire rope, respectively, and finally fixing the connection shanks to each other using a connector pin.

[56] The present invention provides a wire saw whose both ends are coupled to each other through the wire saw connector as configured thus.

[57]

[58] Hereinafter, exemplary embodiments of the present invention will be described in

more detail with reference to the accompanying drawings.

[59] FIGS. 3 to 5 show examples of the wire saw connector of the wire saw according to the present invention.

[60] As shown in FIGS. 3 to 5, the wire saw connector 4 of the wire saw according to the present invention includes one connection shank 41 including a first wire rope fixing part 411 fixing one end 101 of a wire rope 100, and a first shank coupling part 412; and the other connection shank 42 including a second wire rope fixing part 421 fixing the other end 102 of the wire rope 100, and a second shank coupling part 422; and a connector pin 43 coupling the two connection shanks 41 and 42 to each other.

[61] The first wire rope fixing part 411 functions to fix one end 101 of the wire rope 100, and has a first accommodation hole 4111 formed therewithin to accommodate the one end 101 of the wire rope 100 of the wire saw, an inner portion of the first accommodation hole 4111 being processed in the form of a screw.

[62] That is to say, the one end 101 of the wire rope 100 is fixed in a fixing manner of accommodating one end 101 of the wire rope 100 into the first accommodation hole 4111 and fixing the one end 101 of the wire rope 100.

[63] As described above, when the inner portion of the first wire rope fixing part is processed in the form of a screw, the bonding force between the wire rope and the connection shank41 may be further improved, for example, by approximately 30%.

[64] The first shank coupling part 412 is formed integrally with the first wire rope fixing part 411, and includes a connection part 4121 extended in the same direction as a direction where the one end of the wire rope is inserted into the first accommodation hole 4111.

[65] Also, a first connector pin through hole 4122 is formed in the first shank coupling part 412, as shown in FIG. 5.

[66] The second wire rope fixing part 421 functions to fix the other end 102 of the wire rope 100, and has a second accommodation hole 4211 formed therewithin to accommodate the other end 102 of the wire rope 100 of the wire saw, an inner portion of the second accommodation hole 4211 being processed in the form of a screw.

[67] That is to say, the other end 102 of the wire rope is fixed in the same fixing manner as the one end 101 of the wire rope, for example, by accommodating the other end 102 of the wire rope into the second accommodation hole and fixing the other end 102 of the wire rope.

[68] As described above, when the inner portion of the second wire rope fixing part 421 is processed in the form of a screw, the bonding forcebetween the wire rope and the connection shank 42 may be further improved, for example, by approximately 30%.

[69] The second shank coupling part 422 includes a connection part accommodating hole

4221 accommodating the connection part 4121.

[70] Also, second connector pin through holes 4222 and 4223 are formed in the second shank coupling part 422 in a position corresponding to the first connector pin through hole 4122 while the connection part 4121 is accommodated into the connection part accommodating hole 4221.

[71] The two connection shanks 41 and 42 are coupled to each other by inserting the connector pin 43 into the second connector pin through holes 4222 and 4223 and the first connector pin through hole 4122.

[72] For the connectors as shown in FIGS. 3 to 5, the connector pin has a head portion, and a portion processed in the form of a screw to correspond to the second connector pin through hole 4223.

[73] The connector according to the present invention may be rotated at an angle of 45

(degrees) or more when the connection shanks 41 and 42 are coupled to the connection pin 43.

[74] The connector pin 43, which may be used in the present invention, includes, but is not particularly limited to, a connector pin 43a having a screw element 431 processed to its length of 1/4 or more in the form of a screw as shown in FIG. 6(a); a connector pin 43b having a cylindrical body including a hexagonal groove 432 formed thereinside as shown in FIG. 6(b); a connector pin 43c having an anti-slip grooves 433 formed therein as shown in FIG. 6(c); and the like.

[75] Of course, the connector pin, which may be used in the present invention, includes, but is not particularly limited to, a connector pin having a head portion formed in a hexagonal wrench shape; a connector pin having a head portion formed in the form of a regular (-) or Philips head (+) screwdriver; and the like.

[76] The present invention provides a wire saw whose both ends as shown in FIG. 3 are coupled to each other through the wire saw connector 4 as configured thus.

[77] As described above, the wire saw connector of the wire saw according to one exemplary embodiment of the present invention may be useful to improve the bonding force between the wire rope and the connection shank by processing an inner portion of the connection shank in the form of a screw, and also to couple ends of the wire rope in a more easy manner by coupling the connection shanks connected to the wire rope using the connector pin.

[78]

Mode for the Invention

[79] Hereinafter, exemplary examples of the present invention will be described in more detail.

[80]

[81] EXAMPLE

[82] Both ends of a wire rope in the wire saw were coupled to each other using the conventional wire saw connector as shown in FIG. 2 and the inventive wire saw connector as shown in FIG. 4, and a bonding force between the wire ropes were tested using a universal tensile machine (UTM). The results are listed in the following Table 1.

[83] Table 1 [Table 1] [Table ]

[84] [85] As listed in the Table 1, it was revealed that the wire saw connector according to the present invention has an increased bonding force as much as approximately 30% or more, compared to the conventional wire saw connector, and also that the slipping-out of the connector pins do not occur during the cutting operation using the wire saw.

[86] Also, the conventional wire saw connector requires two workers to couple a connector pin, but one worker can couple the connector pin when both ends of the wire saw are coupled to each other through the connector pin according to the present invention.