KR101101752B1 - Apparatus for press-connecting pipes - Google Patents

Abstract

The present invention relates to a pipe crimping fastener that presses a large diameter pipe outer circumferential surface into which a small diameter pipe is inserted so as to fasten both papafs.

Pipe crimp fastener of the present invention is an inner die is coupled to the circular die-like die, the upper end and both ends of the link block and pin coupling; A pair of link blocks having one end pin coupled to the upper die, the other end pin coupled to the link block fastening groove of the crimping block, and having an arc-shaped link member fastened by a free movement fastening means; A lower die in which an arc die-shaped die is coupled to an inner surface thereof; A link block fastening groove, a lower die fastening groove and a crimping piece are formed so that the link block is pin-coupled to the link block fastening groove, and the pair of crimp blocks are pin-coupled to the lower die fastening groove. .

Pipe, Crimp, Crimp Fastening

Description

Pipe Crimp Fasteners {Apparatus for press-connecting pipes}

The present invention relates to a pipe crimping fastener that presses a large diameter pipe outer circumferential surface into which a small diameter pipe is inserted so as to fasten both papafs.

In general, when connecting a pipe for outdoor and indoor plumbing of metal material, a small diameter pipe is inserted into a large diameter pipe and then welded to the insertion part. However, in many cases, a thin pipe is used for cost reduction. Connecting the pipe by welding has a problem that the economic efficiency is greatly reduced because too many defects.

In addition, the classic fastening method for fastening both pipes using threaded connection pipes is not easy to process the screws for fastening the connection pipes to the thin metal pipes, and the joints can be easily deformed during the fastening process. Given that, it was difficult to apply realistically.

Accordingly, many crimping methods and crimping tools for fastening both pipes by crimping the outer circumferential surface of a large diameter pipe into which a small diameter pipe is inserted have been proposed. According to the crimping fastening method, a thinner thickness is compared with the aforementioned methods. The metal pipe can be fastened more easily and simply.

Pipe compression fastening device shown in Figures 1 and 2 is disclosed in Republic of Korea Patent No. 10-0578450 (2006.05.03), the first and second fixing blocks (10, 12), and the first and second fixing blocks ( A plurality of chain links 14 rotatably connected to each other between the 10, 12, and the inner peripheral surface of each of the chain links 14 is coupled by a coupling means, the inner peripheral surface is formed with an arcuate groove and the outer peripheral surface of the pipe to be crimped A plurality of circular arc block 16 in contact with the.

In addition, the pipe crimping device of FIGS. 1 and 2 includes connecting links 15 for rotatably connecting adjacent circular arc blocks 16 and a plurality of circular arc blocks 16 in a direction in which the outer circumferential surface of the pipe is pressed. Or an actuating means for operating the first and second fixing blocks 10 and 12 in the direction of releasing the crimp. In addition, the pipe compression fastening device is provided with a connecting piece 13 to prevent the separation of the circular arc blocks (16).

As described above, the conventional pipe crimp fastening device has a large number of parts for crimping pipes, which causes a complicated part output and assembly process for producing a product. In addition, since the conventional pipe crimp fastening device is used in a crimping process in which many parts are assembled, there is a problem in that parts may be damaged by a force applied during crimping.

FIG. 3 is a view illustrating a pipe compression fastening device for connecting the pipe compression fastening device of FIGS. 1 and 2 to pressurize a force for compressing a pipe.

The illustrated pressure crimping device for pipe crimping actuates the first and second fixing blocks 10 and 12 in a direction in which the plurality of circular arc blocks 16 shown in FIG. 1 are pressed against the outer circumferential surface of the pipe or in a direction in which the crimp is released. . The press fitting device for crimping the pipe is rotatably connected to the fixing plate 24 by hinge pins 22 and 23 and connected to the first and second fixing blocks 10 and 12 of FIG. The first and second main blocks 20 and 21 and cylinders (not shown) for rotating the other ends of the first and second main blocks 20 and 21 to be adjacent to or far from each other are provided.

A hook hole 25 is formed at one end of the first main block 20 so as to be rotatably pin-connected with the connection hole 17 of the first fixing block 10 of FIG. 1, and the second main block 21. One end of the engaging groove 26 is formed to be coupled or detachable to the engaging pin 18 of the second fixing block 12.

Accordingly, the first fixing block 10 compresses the pipe while detaching only the second fixing block 12 with respect to the second main block 21 while being fixed to the first main block 20. When the two main blocks 20 and 21 are rotated by a cylinder, the first and second fixed blocks 10 and 12 are moved to be close to or away from each other, thereby causing each arc block 16 to compress the pipe.

As such, the connection hole 17 and the locking pin 18 of the conventional pipe crimping and fastening device are connected in a straight line with the catching hole 25 and the catching groove 26 of the pressure device for pipe crimping and fastening. . Therefore, when performing the pipe pressure tightening operation using the conventional pipe compression fastening device and the pipe compression fastening device, there is a problem that the pipe crimping operation is impossible in a narrow space where the straight line work is impossible.

In addition, when pressing the pipe by using the pressure device of the configuration described above, since each arc block 16 does not press the pipe with a uniform force, a gap may occur in the crimping portion, which may cause leakage. Since a large force is required to compress the pipe, there is a problem that an expensive heavy hydraulic device must be used.

Moreover, in order to wind the pipe crimping device to the pipe, a chain-shaped block must be wound around the pipe, which is very inconvenient because a heavy load fastener must be installed with two hands to install the pipe in the correct position. There was a problem.

The present invention has been made in order to solve the above problems, by pressing the pipe crimping fasteners using a pressure device (pliers) work by configuring the pipe fastening operation even if the pressurizing device and the fasteners are not located in a straight line It is an object of the present invention to provide a pipe crimp fastener capable of pipe fastening even if the space is small.

In addition, when the pipe is crimped, the fastener is configured to apply a uniform force to the outer circumferential surface of the pipe, thereby providing a pipe crimping fastener capable of crimping the pipe with a small force without causing a leak in the compression part and causing leakage. It is an object of the present invention.

In addition, it is an object of the present invention to provide a pipe crimping fastener that allows an operator to easily mount a crimp of high load to a pipe with little force.

In order to achieve the above object, the present invention includes an upper die having an arc-shaped die jaw is coupled to the inner surface, and both ends thereof are pin-coupled with the link block; A pair of link blocks having one end pin coupled to the upper die, the other end pin coupled to the link block fastening groove of the crimping block, and having an arc-shaped link member fastened by a free movement fastening means; A lower die in which an arc die-shaped die is coupled to an inner surface thereof; A link block fastening groove, a lower die fastening groove and a crimping piece are formed so that the link block is pin-coupled to the link block fastening groove, and the pair of crimp blocks are pin-coupled to the lower die fastening groove.

At this time, the tooth groove formed in the pressing piece of the pressing block is characterized in that the sphere (sphere) groove.

In addition, the line connecting the link block fastening groove, the lower dice fastening groove and the crimping piece of the crimping block is configured to form a triangular shape.

In addition, the free movement fastening means is one side is bolted to the link and the other side is a guide groove is formed is characterized in that the guide plate of the link block is a fixed plate inserted into the guide groove.

In addition, a landscape slope is formed on both sides of the surface of the link tank facing the link block, and a guide surface corresponding to the landscape slope of the link tank is formed on both sides of the upper die and the housing die so that the landscape slope of the link tank is crimped when the pipe is crimped. And slide the pipe along the guide surfaces of the upper and lower dice.

The apparatus may further include a close contact means for closely contacting the link tank to the pipe before crimping the pipe to the link block.

In addition, the outer surface of the upper die, and coupled to the outer surface of the link block pins coupled to both sides of the upper die, both ends are bolted to the link block and further comprises a leaf spring for elastically compressing a pair of link blocks It is composed.

In addition, a crimping jaw is formed in a link block fastening groove in one of the crimping blocks of the pair of crimping blocks, and a hooking jaw is formed in a fastening groove of a link block corresponding to the link block fastening groove. Coil spring-type link spring is fastened to the engaging jaw of the link block is characterized in that the compression block is configured to elastically rotate.

According to the present invention configured as described above, the pipe fastening operation is possible even when the working space is narrow because the pipe fastening operation is possible even when the pressure device and the fastener are not located in a straight line when pressing the pipe compression fastener by using the pressure device (tweezer). Do.

In addition, the four jaws apply a uniform force to the outer circumferential surface of the pipe when crimping the pipe, so that there is no gap in the compression area and no leakage occurs. It can be compressed.

In addition, there is an effect that the operator can easily mount the fastener to the pipe without applying a large force of the compactor.

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

4 is a plan view of a pipe crimp fastener according to the present invention, FIG. 5 is a view showing a crimp fastener opened to fasten a pipe, and FIG. 6 is a plan view showing a crimp fastener pressed. 7 is a partial sectional view of the crimp fastener, and FIG. 8 is a perspective view showing the crimping piece.

Pipe crimp fastener of the present invention for crimping the pipe is composed of a crimp fastener 100 is mounted to the outer peripheral surface of the pipe fastening portion as shown in Figure 4, and a forceps 200 for crimping the crimp fastener 100, Crimp fastener 100 according to the present invention is the upper die 110 and the one end of the circular die-shaped die tank 111 is coupled to the inner surface, both ends of the link block 130 and the pin 102 is coupled; The upper die 110 and the pin 102 is coupled, the other end is coupled to the link block fastening groove 144 and the pin 102 of the crimping block 140, the link member of the arc shape by the free movement fastening means ( 131 is a pair of link block 130 is fastened, the lower die 120 is coupled to the inner die-shaped die tank 121, the link block fastening groove 144, the lower die fastening groove 143 And a crimping piece 141 is formed so that the link block 130 is coupled to the link block fastening groove 144 with the pin 102 and the lower die. Wherein the lower die 120 is composed of a pair of compression blocks 140 of the engagement pin in gyeolhom 143.

As for the free movement fastening means of the link block 130 for fastening the link set 130, one side is bolted to the link set 131, the other side is formed with a guide groove 134, the link block 130 The guide pin 135 of the) is composed of a fixed plate 133 is inserted into the guide groove 134, the linkage 131 is a portion of the link block 130 in the link block (guide pin of the link block guide of the fixed plate) Free movement of the movable part within the groove).

In addition, the link block 130 is preferably provided with a close contact means for bringing the link tank 131 into close contact with the pipe outer surface before the crimp fastener 100 fastened to the pipe is crimped with the forceps 200.

As shown in FIG. 7, the fastening means fastens the spring fixing bolt 136 having the spring 137 to the inside of the link block 130, and the spring 137 protrudes out of the link block 130. By configuring the guide 138 to the elastic support, the jaw guide 138 elastically supports the link tank 131 so that the link tank 131 adheres to the pipe outer surface and compresses the pipe at the correct position.

In addition, the inclined guide surfaces 115 and 122 are formed on both sides of the upper die 110 and the lower die 120, respectively, and the upper die 110 and the lower die 120 are formed at both sides of the linkage 131. The landscape inclined surface 132 corresponding to the guide surfaces 115 and 122 formed thereon is formed.

In addition, the link block fastening groove 144 of the crimping block 140 is coupled to the link block 130 and the pins 102, and the lower die fastening groove 143 of the crimping block 140 is a die jaw 121. The pin is coupled to the lower die 120 provided, the end of the crimping block 140, the pressing piece 141 is protruded, the pressing piece 141 is a sphere in which the tooth 201 of the forceps 200 is seated A tooth groove 142 in the form of a sphere is formed.

At this time, the imaginary line connecting the link block fastening groove 144, the lower dice fastening groove 143 and the crimping piece 141 of the crimping block 140 is preferably configured to form a triangular shape, which will be described later in detail. Explain.

As shown in FIG. 4, the leaf spring 112 having a '∩' shape is coupled to the outer surface of the link block 130 pinned to both sides of the upper die 110 via the outer surface of the upper die 110 as a fixing bolt 113. The leaf spring 112 is configured to elastically compress the link block 130.

The operation of the pipe crimp fastener 100 of the present invention configured as described above will be described in detail.

First, as shown in FIG. 5, the fastening pin 101 is removed to disassemble the crimping block 140 and the lower die 120, and the crimping block 140 and the lower die 120 are rotated to rotate the outer peripheral surface of the pipe. Position the compactor 100, and by rotating the compaction block 140 again to pin the lower die 120 and the fastening pin 101 by mounting the crimp fastener 100 of the present invention to the pipe.

Since the plate spring 112 is in a state of pressing and closing the link blocks 130 at both sides of the upper die 110 in the mounting process as described above, the operator places the crimp fastener 100 on the outer circumferential surface of the pipe and links the link block. Operation is very convenient because the fastening is completed by pin-bonding the crimping block 140 and the lower dice 120 with the fastening pin 101 without having to hold the 130 to be held.

In addition, since the linkage 131 may be freely moved to a certain portion, the linkage 131 is seated at the correct position on the outer surface of the pipe in the process of mounting the crimp fastener 100 to the pipe, and thus the pipe is uniformly applied. It can be crimped.

As shown in FIG. 7, a locking jaw 145 is formed in the link block fastening groove 144 in any one of the pair of crimp blocks 140, and the link block fastening groove is formed. A locking jaw 139 is formed in the fastening groove (unsigned) of the link block 130 that is pin-coupled with the 144, and the locking jaws 145 and 139 of the crimping block 140 and the link block 130 are formed. By coupling the coil spring-shaped link spring 146 to elastically rotate the crimp block 140, the operator can easily fasten with little force when fastening the crimp fastener 100 of the present invention to a pipe. have.

As described above, the crimp fastener 100 coupled to the outer circumferential surface of the pipe bites the forceps 200 to compress the pipes. At this time, the tooth 201 of the forceps 200 has a sphere shape of the crimping piece 141. The pair of crimp blocks 140 are crimped by being bitten by the formed tooth grooves 142.

At this time, the tooth 201 of the forceps 200 is bitten by a tooth groove 142 formed in a sphere shape, but the tooth 201 of the forceps 200 does not bite at the exact position of the tooth groove 142. Since the tooth groove 142 is formed in the shape of a sphere, the tooth 201 of the forceps 200 is seated at the correct position and pressed in the crimping process even when the tooth groove 142 is formed in a sphere shape.

In addition, when crimping the pipe crimp fastener 100 using the forceps 200, the crimp 200 may be rotated and crimped even if the forceps 200 and the crimp fastener 100 are not positioned in a straight line. Pipe tightening is possible even in a narrow space.

The crimp fastener 100 is installed on the pipe and the state before crimping with the forceps 200 is as shown in FIG. 4.

In this state, as the pair of crimp blocks 140 are crimped, the crimp blocks 140 rotate with respect to the link block fastening grooves 144, and thus the crimp blocks 140 are lower die 120 and upper die 110. ) To the pipe side.

At this time, the imaginary line connecting the link block fastening groove 144, the lower dice fastening groove 143 and the crimping piece 141 of the crimping block 140 is configured to form a triangular shape to the crimping piece 141. The force of the crimping tongs is increased by the lever principle, so that the pipe can be crimped strongly with little force.

In addition, the guide surface formed on both sides of the upper die 110 and the lower die 120, respectively, the landscape slope 132 formed on both sides of the link tank 131 in the process of pressing the pair of pressing blocks 140 as described above. Since the slide slides along the 122 and 115 and the pipe is compressed, the linkage 131 can compress the pipe with an even force at the correct position.

In the present invention configured as described above, since four jaws compress the pipe by applying a uniform force to the outer circumferential surface of the pipe when the pipe is crimped, a gap does not occur in the compression part of the pipe, The pipe can also be crimped by force.

In addition, since the pressing fastener 100 fastened to the pipe by the leaf spring 112 and the link spring 146 maintains the fastening state (the crimp fastener is closed), the operator may Compressor 100 has an effect that can be easily mounted on the pipe without a large force.

The pipe crimp fastener according to the present invention has been described above.

The technical configuration of the present invention will be understood by those skilled in the art that the present invention can be implemented in other specific forms without changing the technical spirit or essential features.

Therefore, the above-described embodiments are to be understood in all respects as illustrative and not restrictive, and the scope of the present invention is indicated by the appended claims rather than the foregoing description, and the meanings of the claims and All changes or modifications derived from the scope and the equivalent concept shall be construed as being included in the scope of the present invention.

1 is a view showing a conventional pipe compression fastening device.

Figure 2 is a view showing a chain connection state of the pipe compression fastening device of FIG.

3 is a view illustrating a pressurization device for pipe compression fastening connected to a pipe compression fastening device to apply a pressing force.

4 is a plan view of a pipe crimp fastener according to the present invention.

5 is a view illustrating a crimp fastener opened to fasten a pipe;

6 is a plan view showing a crimp fastening state.

7 is a partial cross-sectional view of a crimp fastener.

8 is a perspective view showing a crimping piece.

<Explanation of symbols for the main parts of the drawings>

100: Fastener

101: fastening pin

102: pin

110: upper dice

111: Dice Joe

112: leaf spring

113: Fixing bolt

115: guide surface

120: lower dice

121: Dice Joe

122: guide surface

130: link block

131: Link Joe

132: Landscaping

133: fixed plate

134: Guide groove

135: guide pin

136: Spring Fixing Bolt

137: spring

138: Joe Guide

139: jamming jaw

140: crimp block

141: crimping piece

142: Tooth Home

143: lower die fastening groove

144: link block fastening groove

145: jamming jaw

146: link spring

200: tongs

201: Tooth

Claims (8)

An upper die 110 in which an arc die-shaped die 111 is coupled to an inner surface thereof, and both ends of which are pin-coupled with the link block 130; One end of the pin is coupled to the upper die 110, the other end of the pin is coupled to the link block fastening groove 144 of the crimp block 140, the circular linkage 131 by the free movement fastening means A pair of fastened link blocks 130; A lower die 120 having an arc-shaped die jaw 121 coupled to an inner surface thereof; The link block fastening groove 144, the lower die fastening groove 143, and the pressing piece 141 are formed so that the link block 130 is pin-coupled to the link block fastening groove 144 and the lower die fastening groove 143. A pair of crimp blocks 140 to which the lower dice 120 are pin coupled; A crimping jaw 145 is formed in the link block fastening groove 144 in any one of the pair of crimp blocks 140 and the link block corresponding to the link block fastening groove 144 is formed. A locking jaw 139 is formed in the coupling groove of the 130, and a link spring 146 having a coil spring is coupled to the locking jaws 139 and 145 of the crimping block 140 and the link block 130. Pipe crimp fasteners, characterized in that the block 140 is configured to rotate elastically. The method of claim 1, Tooth groove 142 formed in the crimping piece 141 of the crimping block 140 is a pipe crimp fastener, characterized in that the sphere (sphere) groove. The method of claim 1, The line connecting the link block fastening groove 144, the lower dice fastening groove 143, and the crimping piece 141 of the crimping block 140 is configured to form a triangular shape. The method of claim 1, One side of the free movement fastening means is bolted to the linkage 131, the other side is formed with a guide groove 134, the guide pin 135 of the link block 130 is inserted into the guide groove 134 and fastened Pipe crimp fasteners, characterized in that the fixing plate (133). The method of claim 4, wherein A landscape slope 132 is formed on both sides of a surface of the link tank 131 facing the link block 130, On both sides of the upper die 110 and the housing die 120, guide surfaces 115 and 122 corresponding to the landscape slope 132 of the linkage 131 are formed, respectively, when the pipe is squeezed to the linkage 131. The landscape inclined surface 132 of the pipe compression fastener, characterized in that the slide is moved along the guide surface (115) (122) of the upper dice 110 and the lower dice (120). The method of claim 4, wherein Before the crimping the pipe to the link block 130, the pipe crimp fastener, characterized in that it further comprises a close contact means for close contact with the pipe. The method of claim 1, It is coupled to the outer surface of the upper die 110 and the outer surface of the link block 130, which is pin-coupled to both sides of the upper die 110, both ends are bolted to the link block 130, a pair of link blocks Pipe crimp fasteners, characterized in that further comprises a leaf spring (112) for elastically compressing (130). delete

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