KR200181967Y1 - Tube coupling comperssion tool - Google Patents

Abstract

The present invention relates to a pipe joint crimping tool that is simple in structure and capable of tightly connecting a pipe with little force, and the structure is provided with a crimping portion having a polygonal groove and a circular groove on its inner surface between facing ends. In the pipe joint crimping tool for crimping and tightly connecting two pipes connected by a connector while the two bodies are pin-coupled and pinned by rotating the pin by the shaft by a hydraulic or pneumatically actuated device on the rear side, each of the bodies The pressing portion 20 of the (10a) (10b) is divided into two front and rear, and the front side is a fixed pressing portion 21 integral with the body (10a) (10b), and the rear side and the body (10a) (10b) When the body (10a) (10b) is opened while instructing the movable pressing portion 23 and the movable pressing portion (23), which are separated and installed so as to be movable back and forth, the movable pressing portion (23) is retracted and tightened. To the fixed crimp part (21) Is the drive unit is configured.

The pipe joint crimping tool of the present invention is a pipe to be connected to the front by moving the inclined surface of the push rod 30 during the tightening operation of the body (10a, 10b) when pressing the connected pipe 23 Since it is to compress the pressure loss can be prevented as much as possible, there is an advantage of having a good tube connection state of high rigidity and airtightness than the conventional crimping tool consisting of four gamma crimping portion even with a small force.

Description

Pipe Fitting Crimping Tool

The present invention relates to a crimping tool for crimping and connecting a pipe, and more particularly, to a pipe joint crimping tool with a simple structure and to allow the pipe to be hermetically connected with a small force to prevent loss of force.

Generally, when connecting pipes, pipes of various structures are used for connection. In most cases, the connection between the pipes is made tight by using bolts or the like, and these are expensive because the structure of the pipe fittings is precise and many parts are used.

Therefore, a method of simply connecting a diameter-diameter connecting pipe between the pipes to be connected and crimping with a crimping tool was developed. In order to connect the pipes in this way, a crimping tool for crimping the pipes is necessary.

Conventional crimping tools have two bodies pin-coupled to rotate to have a crimping part for crimping the tube on the side, and a cylinder operated by pneumatic or hydraulic pressure is installed on the rear side so that the crimping parts are in close contact with each other. Therefore, if the cylinder is operated after interposing the connecting tube at the end of the two pipes to be connected to the crimping part, both bodies rotate the pins to the axis and press the pipes interposed on the crimping part to compress the connecting pipe and the both pipes. Will be.

This pressing tool has two structures. First, the crimping part for crimping the tube is integrated with the body, and second, the front and rear parts of the crimping part of each body are separated, and are separated from each other by the force of the spring. There is.

In the first crimping tool, when the tube is crimped, the front and rear portions of the crimping portion are spaced apart from each other, so that the surface of the tube protrudes.

In the second crimping tool, four protrusions are formed on the surface of the pipe at the time of connection because the movable crimping parts are separated into the front and rear parts of both bodies. However, like the first crimping tool, the protrusions are not concentrated in one place but are distributed in four places, so the airtightness is increased due to the smaller protrusions. However, when crimping the tube, when the tip of the body is retracted, the contact force between the separated movable presses moves on the inclined surface of the body, thereby narrowing the distance between each other. There is a closure done.

Therefore, the present invention was devised to solve such a conventional closed end, and its purpose is to reduce the four movable compression parts to two movable compression parts and to operate the compression part by naturally tightening the body on the sliding slope of the push rod. In order to reduce the loss of force, it is to provide a pipe joint crimping tool that makes the pipe joint highly tight and secure with little force.

1 is a perspective view of a pipe joint crimping tool according to the present invention,

Figure 2 is an exploded perspective view of the pipe joint crimping tool according to the present invention,

Figure 3a, Figure 3b is a state of operation of the present invention according to the present invention the compression tool,

Figure 4 is an exploded perspective view showing the structure of the fixed compression portion according to the first embodiment of the present invention,

5 is a plan cross-sectional view of FIG.

* Explanation of symbols for main parts of the drawings

10a, 10b: body 11: mounting groove

12: step 13: first sliding surface

14: first inclined plane 15: horizontal plane

16: second inclined surface 20: crimping portion

21: fixed crimping portion 22: hexagon groove

23: movable pressing portion 24: the second sliding surface

25: third inclined plane 26: first sliding slope

27: engaging projection 28: circular groove

29a, 29b: spring groove, spring 30: push rod

31: second sliding slope 32: fourth slope

33: locking projection 34a, 34b: spring groove, spring

40: bracket 41a, 41b: locking jaw

50: fixing plate 51: pin

(Figure 4, 5)

61: fixed crimping portion 62, 63: screw hole

64: screw

The pipe joint crimping tool of the present invention for achieving the above object is operated by hydraulic or pneumatically installed on the rear side of the two body is provided with a crimping portion formed with a polygonal groove and a circular groove on the inner circumferential surface between the front end portions facing each other. A pipe joint crimping tool for crimping and tightly connecting two pipes connected by a connector while being rotated and tightened by a pin by means of a device, wherein the crimping portions of the respective bodies are divided into two parts back and forth and the side portion is integral with the body. The fixed crimping portion and the rear portion are separated from the body, and the movable crimping portion is installed to be capable of sliding forward and backward, and the body is supported while retracting the movable crimping portion when the body is opened while being tightened. An actuating means is provided to achieve this.

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

1 is an exploded perspective view of the crimping tool according to the present invention, as shown in the crimping tool of the present invention, the two plates 10a, 10b rotatably coupled to two pins 51 on the fixed plate 50. ) Each of the bodies 10a and 10b was opened and closed around the pin 51 by a cylinder not shown in the drawing installed at the rear side. A hexagonal groove 22 is provided at each of the bodies 10a in the facing portion of the tip portion. ), A crimping portion 20 that is divided into two parts back and forth on (10b) is provided. The crimping portion 20 is provided with a fixed crimping portion 21 integrated with the bodies 10a and 10b on the front side and a movable crimping portion 23 installed on the rear side so as to be movable back and forth. A circular groove 28 is formed in the central portion of the inner surface of the hexagonal groove 22 of the crimping portion 20 to allow the hexagonal groove 22 to be inscribed. And the back side of the movable crimping part 23 is provided with a pusher 50 for advancing and moving the movable crimping part 23 by the operation of the bodies 10a and 10b.

2 is an exploded perspective view of the crimping tool according to the present invention, the installation groove 11 is formed in the body (10a), (10b) of the position where the movable crimping unit 23 is to be installed. The front side of the mounting groove 11 has a first sliding surface 13 having a guide groove 13a formed at an intermediate portion thereof at a right angle with the stepped portion 12 in the pressing direction, and the first inclined surface 14 at the rear side thereof. And a horizontal plane 15 parallel to the first sliding surface 13, and at the rear side thereof, forms a gentle inclination in the direction in which the bodies 10a, 10b are in contact with each other, and the guide groove 16a is formed in the middle portion thereof. It has a structure which has the 2nd inclined surface 16 formed.

In addition, the movable pressing portion 23 to be mounted to the installation groove 11 is the second sliding sliding in contact with the first sliding surface 13 of the body (10a), (10b) to the other side of the hexagonal groove (22) The surface 24 is formed. The second sliding surface 24 is shorter than the first sliding surface 13 and moves forward and backward by the length thereof, and the guide 24a guided corresponding to the guide groove 13a of the first sliding surface 13 protrudes. It is formed to guide the movement of the movable crimp (23). Further, a third inclined surface 25 is formed at the rear side of the first sliding surface 13 to coincide with the first inclined surface 14 of the bodies 10a and 10b, and at the rear side thereof, the bodies 10a and 10b. A first sliding slope 26 having an inclination opposite to the second slope 16 of. And both sides of the second sliding surface 24 is formed with a locking projection (27) protruding horizontally back and forth and the movable pressing portion facing the step 12 of the installation groove 11 of the body (10a), (10b) A spring groove 29a is formed on the (23) surface, and the spring groove 29a has a spring 29b which is supported by the bodies 10a and 10b to elastically restore the movable crimp 23 to the rear side. It is snowy.

Further, the push rod 30 has a long hexagonal shape at both sides thereof, and has a fourth inclined surface 32 corresponding to the second inclined surfaces 16 of the two bodies 10a and 10b on the rear side, and each movable crimping portion (on the side). It consists of the 2nd sliding surface 31 corresponding to the 1st sliding surface 26 of 23. As shown in FIG. In addition, the fourth inclined surface 32 has a guide 32a corresponding to the guide groove 16a of the second inclined surface 16 to protrude, and supports sliding rods from the bodies 10a and 10b and at the same time slides. To guide. In addition, both sides of the outer surface in the direction of the body (10a), (10b) has a locking projection 33 is formed protruding, when the body is opened between the body (10a), (10b) and the two side bars 30 close to each other Spring 34b is elastically installed. At this time, each body (10a, 10b) is formed with a spring groove (34a) for receiving the spring (34b).

In addition, the brackets 40 are screwed to both sides of the body (10a, 10b). A locking jaw (4h) corresponding to the locking projection 27 of the movable crimping portion 23 and the locking projection (33) corresponding to the locking projection (33) of the pusher (30) at the end portion of the pusher (3 ○) in the center of the bracket (40) 41b is provided so that the movable crimping unit 23 can be moved back and forth without detaching from the bodies 10a and 10b after assembly, and the push rod 30 is also coupled to the bodies 10a and 10b. State is maintained.

Looking at the operation of the pipe joint crimping tool of the present invention having such a structure as follows.

First, in order to connect the pipes, the compression parts 20 of the bodies 10a and 10b should be opened. When the crimping portion 20 is opened, the movable crimping portion 23 is opened along with the bodies 10a and 10b and slides along the second sliding slopes 31 of the two push rods 30 to be spaced apart by a predetermined inclination angle. You will retreat. That is, the movable pressing portion 23 has a property to move to the right by the elastic force of the spring (29b) provided between the movable pressing portion 23 and the fixed pressing portion 21, the body (10a), (10b) Is sliding to the outside while riding on the second sliding slope 31 of the push rod 30. At this time, since the second sliding slope 31 is inclined in the outer rearward direction, the movable crimping portion 23 is forced to retreat. For this reason, the hexagonal groove 22 of the crimping | compression-bonding part 20 will be in the expanded state eventually.

In this state, the both ends of the pipe to be connected to the connecting tube in the state of the hexagonal grooves 22 of the crimping unit 20, and then operate the cylinder (not shown in the drawing), by pneumatic or hydraulic body (10a), ( When opening the rear side 10b), the body (10a), (10b) is rotated by the pin axis and the crimping portion 20 is pinched together to crimp the tube to be connected in the hexagonal groove 22 of the crimping portion (20). That is, the movable pressing part 23, which has been retracted, moves to the center with the bodies 1Qa and 10b, and the second sliding slope 26 of the movable pressing part 23 is inclined to the second of the push rod 30. Sliding movement on the sliding inclined surface 31, the second sliding surface 24 of the movable crimping portion 23 compresses the spring 29b by riding the first sliding surface 13 of the body (10a), (10b) As you move forward, you will move towards the tip. Therefore, the inner circumferential surface of the hexagonal groove 22 is narrowed and pressed while pushing the tube to be connected toward the fixed crimping portion 21.

By this operation, the connecting tube and the tube inserted therein are hermetically connected, and the surface thereof has a hexagon by the hexagonal groove 22 of the crimping portion 20, and the inner circumferential surface of the hexagonal groove 22 of the crimping portion 20. It protrudes in a circular band shape by the circular groove 28 formed in the center.

In addition, if the body (10a, 10b) rolls open after the connection of the tube is completed, the movable crimping portion (23) is compressed with the spring (29b) as described above while opening to both sides together with the body (10a), (10b) By the resilient force of) and the second sliding slope 31 of the push rod 30 to retreat to the state where the hexagonal grooves 22 are expanded to the maximum, so that the connected pipe can be easily separated.

4 is an exploded perspective view showing the structure of the fixed crimping portion according to the first embodiment of the present invention, in which the bar fixed screwing portion 61 is separated from the bodies 10a and 10b and is interchangeably screwed together. It is supposed to be. That is, the fixed crimping portion 61 has a screw hole 62 formed at the center of the surface separated from the bodies 10a and 10b, and is also external to the separated surfaces of the bodies 10a and 10b which are in contact with the fixed portions 61a and 10b. The screw hole 63 penetrated by the hole is formed. In addition, the separated surfaces of the body (10a), (10b) and the fixed crimping portion 61 has a polygonal structure to prevent the flow of the fixed crimping portion (61).

FIG. 5 is a plan sectional view of FIG. 4, by which the fixed crimping portion 61 is brought into contact with the bodies 10a and 10b by this structure, and then the screw holes 62 and the outside of the bodies 10a and 10b. Fasten the fixed crimping portion 61 by fastening the screw 64 with (63). Due to this structure, crimping tools having different specifications can be used universally. Therefore, it is not necessary to purchase expensive crimping tools according to each type. In addition, even if the crimping part is damaged, only the separated fixed crimping part 61 needs to be replaced. There is an economic advantage.

As described above, the pipe joint crimping tool of the present invention is designed to compress the pipe to be connected by moving forward on the inclined surface of the push rod during the tightening operation of the body when crimping the connected pipe. Since it can be prevented as much as possible, there is an advantage in that a good pipe connection effect can be obtained, which is firmer and higher in airtightness than a conventional crimping tool made of four movable crimping parts with a small force.

Claims (3)

Two bodies 10a, 10b having a polygonal groove between the distal ends and a crimping portion having a circular groove 28 on the inner circumferential surface thereof are pin-coupled to each other so as to be operated by a hydraulic or pneumatic device installed at the rear side. In the pipe joint crimping tool for crimping and tightly connecting two pipes connected by a connector while rotating the pins 51 by a shaft, the pressing parts 20 of both the bodies 10a and 10b are moved forward and backward. It is divided into two parts, and the front side part is a fixed crimping part 21 integrated with the bodies 10a and 10b, and the rear part is separated from the body 10a and 10b, and the movable crimping part is installed to be able to slide back and forth ( 23, the front side of the body 10a, 10b on which the movable crimping portion 23 is to be installed has a step 12 in the horizontal direction and a first sliding 13 perpendicular to the step 12. And a first inclined surface 14 extending to the right side thereof, a horizontal surface 15 parallel to the first sliding surface 13, and both body bodies 10a and (1). 0b) is provided with an installation groove 11 composed of a second inclined surface 16 to form a gentle slope in the direction in which the contact, the movable pressing portion 23 is installed in the installation groove 11 is a locking projection ( 27 and a second sliding surface 24 which is in contact with the first sliding surface 13 of the bodies 10a and 10b, and the first inclined surface 14 of the bodies 10a and 10b on the rear side thereof. A first sliding slope 26 having a corresponding third slope 25 and having a slope opposite to the second slope 16 of the bodies 10a and 10b on the rear side thereof, the body 10a And elastically install a spring (29b) for retracting the movable crimping portion (23) between the stepped portion 12 of the tip of the installation groove (11) of the (10b), the push rod 30 is the body (10a), ( 10b) having a fourth inclined surface 32 corresponding to the second inclined surface 16, and having a second sliding slope 31 corresponding to the first sliding slope 26 of the movable crimping portion 23 on the side; Engaging projections 33 on both sides of the body 10a, 10b direction. It is installed, and the spring (34b) is elastically installed to maintain the state in which both sides of the pusher between the body (10a, 10b) in close contact, the locking projection of the pusher (30) and the locking projection of the movable pressing portion (23) Brackets 40 having locking jaws 41a and 41b corresponding to (27) and (33), respectively, are screwed to both side surfaces of the bodies (10a) and (10b), and are movable-compressed with the push rod (30). Pipe joint crimping tool characterized in that to support the portion (23). According to claim 1, wherein the first sliding surface 13 and the second inclined surface (16) of the body (10a, 10b) has a guide groove (16a), (13a), respectively, which is in contact with the A crimp joint is characterized in that the guides 32a and 24a, which correspond to the respective guide grooves 16a and 13a, protrude from the two sliding surfaces 24 and the fourth inclined surface 32, respectively. tool. The crimping tool according to claim 1, wherein the fixed crimping portion (61) is separated from the bodies (10a) and (10b) and is interchangeably screwed.