KR102302121B1 - Heater with air vent and Heat welding apparatus having the same - Google Patents

Abstract

The present invention relates to a heater with air vents and a thermal fusion apparatus including the same. According to the present invention, since the outer diameters of guide rods, which are movement paths of a movable clamp, are formed differently, the movable clamp is configured to move in the vertical direction so that the moving clamp is moved even when objects to be fused are not centered due to tolerance of an outer peripheral surface and the like, and thus a fusion operation can be performed smoothly while aligning the centers of the objects to be fused. Since a heater separation means is installed inside the guide rod except for locks on which a heater is installed, a distance between a fixed clamp and the movable clamp is increased by the length of the heater separation means, thereby preventing the length of the entire device from becoming longer, and being prevented from being damaged by external impact. Since the distance of the locks mounted on the heater separation means can be arbitrarily adjusted according to the type of the objects to be fused, the distance can be arbitrarily adjusted to a distance where heating, fusion, and heater separation operations of the objects to be fused can be smoothly performed, even if the length protruding from the clamp changes depending on the object to be fused. In addition, since vent holes are formed in heater faces combined with the objects to be fused, the air inside the objects to be fused is circulated with the external air to be cooled when the objects to be fused by the heater are heated, thereby preventing the inner peripheral surface of the objects to be fused from being deformed by heat of the heated internal air.

Description

Heater with air vent and heat welding apparatus having the same

The present invention relates to a heater having a vent hole and a heat splicer having the same, and more particularly, a vent hole is formed in a heater face to which one end of the fusion target is coupled so that the air inside the fusion target circulates with external air through the vent hole. By being configured, it is possible to prevent the inner peripheral surface of the fusion object from being deformed due to overheating of the air inside the fusion object by the heater. By being configured to be possible, it relates to a heater capable of matching the centers of the objects to be fused, and a thermal welding machine having the same.

In general, a synthetic resin pipe extends the pipe by fusion bonding the ends of the pipes according to the construction length during construction.

The welding methods used at this time include butt welding and socket welding.

Butt fusion is a fusion in which a heater is inserted between the ends of the pipes to be connected to melt the cross sections of the pipes, then the inserted hot plate is removed, and the molten parts are pressed against each other and joined by pressure.

Socket fusion is a fusion splicing in which the inner surface of the socket and the outer surface of the pipe are inserted into the concave-convex heater to melt the inner surface of the socket and the outer surface of the pipe, then the heater is removed and the pipe is inserted into the socket for bonding.

In order to proceed with these fusion processes, the operator fixes the pipe or socket (hereinafter referred to as the 'fusion target') to be fused through a clamping device, and then proceeds with the process of heating the fusion target with a heater to connect the pipes. During the process, the fusion target frequently sticks to the heater, and since a lot of time is consumed in the process of separating the fusion target attached to the heater and the fusion surface of the fusion target becomes non-uniform, the fusion bonding process of the pipes is smooth. won't be done

In order to solve this problem, Korean Patent Registration No. 10-0456615 (title of invention: pipe clamping device with heater separation means) (hereinafter referred to as 'prior art') was developed.

1 is a perspective view of a pipe clamping device to which the prior art is applied.

The clamping device 100 to which the prior art is applied includes a pedestal 101, first and second fixing clamps 102, 103, first and second movable clamps 104, 105, and guides. It consists of rods 106 and 107, hydraulic cylinders 108 and 109, and a heater 200.

At this time, the clamps 102 , 103 , 104 , and 105 are composed of an arc-shaped upper surface and a lower surface in which a curved surface is formed therein so that the pipe can be clamped therein.

The pedestal 101 includes a first pedestal 1011 of a square plate shape to which the first fixing clamp 102 is fixedly installed, and a second pedestal 1012 having a rectangular frame shape to which the second fixing clamp 103 is fixedly installed, It is installed between the first pedestal 1011 and the second pedestal 1012 and consists of a spacing adjusting rod (not shown) for adjusting the spacing.

At this time, the first pedestal 1011 is connected to the side on which the second fixing clamp 103 of the second pedestal 1012 is installed by a spacing adjusting rod.

In addition, in the second pedestal 1012, the movement limiting part 1013 is formed to protrude upward on the side opposite to the side on which the second fixing clamp 103 is fixed, and the movement distance of the movement clamps 104 and 105 to be described later. to be limited.

The guide rods 106 and 107 have both ends coupled to the lower surface of the first fixing clamp 102 and the movement limiting part 1013 of the pedestal 101, respectively, and the second fixing clamp 103, the first, first 2 It passes through the lower surfaces of the moving clamps 104 and 105.

2 is a plan view of a clamping device to which the prior art is applied.

2 (a) shows the heater 200 in the carriage 1062, 1072 to be described later after fixing the pipes to the fixing clamps 102, 103 and the moving clamps 104, 105. ) is mounted, and (b) of FIG. 2 shows that the ends of the pipes fixed by the fixing clamps 102 and 103 and the movable clamps 104 and 105 are in close contact with the heater 200. is the state

In the clamping device 100 to which the prior art is applied, as shown in FIG. .

In addition, the carriages 1061 and 1071 are provided with first locks 1062, 1072 and second locks 1063 and 1073 on the front and rear surfaces, respectively.

In addition, the heater 200 is attached to and detached from the first locking member 1062 and 1072 .

In addition, the guide rods 106 and 107 are provided with movement limiting rings 1064 and 1074 for limiting the rear movement of the carriages 1061 and 1071, respectively.

The movable clamps 104 and 105 are installed between the second fixing clamp 103 and the movement limiting part 1013 of the pedestal 101 .

In addition, the movable clamps 104 and 105 are integrally connected by hydraulic cylinders 108 and 109 in which both ends are coupled to the lower surface facing each other.

The hydraulic cylinders 108 and 109 are coupled to the movable clamps 104 and 105 under the guide rods 106 and 107 penetrating the movable clamps 104 and 105 .

In addition, cylinder rods 1081 and 1091 operated to be movable in the longitudinal direction by hydraulic pressure are installed at the ends of the hydraulic cylinders 108 and 109 .

At this time, the ends of the cylinder rods 1081 and 1091 are fixedly coupled to the second fixing clamp 103 .

Through this, the movable clamps 104 and 105 are moved in the longitudinal direction of the cylinder rods 1081 and 1091 when the length of the cylinder rods 1081 and 1091 is changed by hydraulic pressure.

The heater 200 is in the form of a disk having a certain thickness, and coupling grooves 201 and 202 formed at symmetrical positions with respect to the center of the circle are formed on the edge of the disk.

The heater 200 is a carriage 1061, 1071 of the first latch 1062, 1072 is inserted into the coupling groove 201, 202 is coupled by the heater 200 is the carriage ( 1061) and (1071).

The clamping device 100 configured in this way moves along the cylinder rods 1081 and 1091 by hydraulic pressure of hydraulic cylinders 108 and 109 fixedly coupled to the inside of the movable clamps 104 and 105. When this is done, the hydraulic cylinders 108 and 109 and the movable clamps 104 and 105 fixedly coupled to the hydraulic cylinders 108 and 109 move together with the hydraulic cylinders 108 and 109 .

In addition, the clamping device 100 heats the ends of the pipes and, when the ends of the pipes are attached to the heaters 200 in the process of separating the heaters 200, move the clamps 104 and 105 to the pedestals 101. When it is moved in the direction of the movement limiting part 1013 of are separated

However, when the clamping device 100 fixes the fusion objects through the clamps 102 , 103 , 104 , and 105 , the center is shifted in the vertical direction due to the tolerance of the outer peripheral surface of the fusion object. As it occurs frequently, pipes cannot be connected in a straight line during butt fusion, and during socket fusion, a problem occurs that the pipe cannot be properly inserted into the socket.

In addition, the clamping device 100 has a carriage 1061 in order to contact the pipes on both sides of the heater 200 as shown in FIG. 2(b) in a state in which the heater 200 is installed as shown in FIG. , (1071) is advanced toward the second fixing clamp 103, and at this time, the tip of the carriage 1061, 1071 is in contact with the rear surface of the second fixing clamp 103, the carriage 1061, Movement of the 1071 is limited, and thus the movement of the heater 200 mounted on the carriages 1061 and 1071 is also limited.

Therefore, an interval of 'A' is required between the second fixing clamps 103 of the carriages 1061 and 1071 and the heater 200, and eventually the length of the clamping device 100 becomes that much longer and the device is become large

In addition, the clamping device 100 is a heater separating means carriages 1061, 1071 and catches 1062, 1063, 1072, 1073 are guide rods 106, 107 outside of the guide rods 106, 107. Because it is installed on the wall, it is easily damaged by external impact.

In addition, in the clamping device 100, when one end of the pipe is in contact with the heater 200, one end of the pipe is sealed by the heater and at the same time the temperature inside the pipe is increased by the heat of the heater 200, so that one end of the pipe In addition, the inner circumferential surface of the pipe is heated together, which causes the inner circumferential surface of the pipe to be deformed by heat, resulting in a problem in that the quality of the pipe is deteriorated.

In addition, when one end of the clamping device 100 is closed among both ends of the pipe, when the other end is brought into close contact with the heater 200 , both ends are closed, thereby sealing the air inside the pipe. When the clamping device 100 is heated in such a state, since the inside of the pipe is sealed, the internal temperature and pressure of the pipe increases, so that the inner circumferential surface of the pipe is deformed and damaged by the high-temperature and high-pressure air. will do

The present invention is to solve this problem, and the movable clamp is configured to be movable in the vertical direction, so that when the fusion objects are not centered due to tolerances on the outer circumferential surface, the heater and the same are provided It is about a heat fusion machine.

In addition, another solution of the present invention is to prevent the gap between the fixed clamp and the movable clamp from being widened by the length of the heater separating means by allowing the heater separating means to be installed inside the guide rod except for the clasp on which the heater is mounted. It relates to a heater capable of preventing damage by external impact as well as being there and a thermal welding machine having the same.

In addition, another solution to the present invention relates to a heater capable of adjusting the installation position of the heater according to the length of the objects to be fused by being configured to adjust the distance of the catches mounted on the heater separating means, and a heat welding machine having the same.

In addition, another solution to the present invention is that when the fusion target is heated by a heater by forming a ventilation hole in the heater faces coupled to the fusion target, the air inside the fusion target is circulated with the external air and cooled, thereby It relates to a heater capable of preventing the inner circumferential surface of the welding objects from being deformed by heat by heating the internal air, and a thermal welding machine having the same.

A solution of the present invention for solving the above problems is a heater for heating the ends of a first fusion object and a second fusion object, the heater comprising: a plate-shaped heater plate having a heating wire installed therein; a first heater face formed in a hollow cylindrical shape, installed on one surface of the heater plate, and into which the first fusion target is hollow; It is formed in a hollow cylindrical shape and is installed on the other surface of the heater plate, and includes a second heater face whose end is inserted into the hollow inside of the second fusion target, and on the outer peripheral surfaces of the first heater face and the second heater face Ventilation holes communicating up to the inner hollow are formed, respectively.

In addition, in the present invention, the first heater face has a stepped on the inner circumferential surface, and when the direction from the second heater face toward the first heater face is referred to as the front, the inner diameter of the front with the step as the boundary is greater than the inner diameter of the rear. It is formed to be large, and it is preferable that the ventilation hole of the first heater face is formed on the outer peripheral surface of the rear side of the step.

In addition, in the present invention, it is preferable that an inclined surface whose diameter increases toward the front is formed on the outer peripheral surface of the second heater face, and the ventilation hole of the second heater face is formed on the inclined surface or is formed on the outer peripheral surface in front of the inclined surface. .

In addition, in the present invention, the heater plate is preferably installed at a position corresponding to the lower end of the heating wire of the first heater face and the second heater face.

In addition, the present invention provides a pedestal, at least one or more fixing clamps installed on one side of the pedestal to fix the first fusion target, and a guide rod having one end coupled to the fixing clamps and installed in parallel with the first fusion target. and at least one or more movable clamps having guide rod through-holes through which the guide rods pass, installed movably along the guide rods, and fixing a second fusion object to be fused with the first fusion object; In the thermal welding machine comprising a heater installed between the fixing clamps and the movable clamps to heat the ends of the first and second welding objects: the heater is a plate-shaped heater in which a heating wire is installed board; a first heater face formed in a hollow cylindrical shape and installed on one surface of the heater plate, the end of which is inserted into the hollow of the first fusion object or into which the end of the first fusion object is inserted into the hollow inside; A second heater face formed in a hollow cylindrical shape and installed on the other surface of the heater plate, the end of which is inserted into the hollow of the second fusion object or into which the end of the second fusion object is inserted into the interior hollow, wherein Ventilation holes communicating up to the hollow are formed on outer peripheral surfaces of the first heater face and the second heater face, respectively.

In addition, in the present invention, the first heater face has a stepped on the inner circumferential surface, and when the direction from the second heater face toward the first heater face is referred to as the front, the inner diameter of the front with the step as the boundary is greater than the inner diameter of the rear. The vent hole of the first heater face is formed on the outer peripheral surface rearward than the step, the outer peripheral surface of the second heater face is formed with an inclined surface whose diameter increases toward the front, and the vent hole of the second heater face is It is preferably formed on the inclined surface or formed on the outer peripheral surface in front of the inclined surface.

In addition, in the present invention, the heater plate is preferably installed at a position corresponding to the lower end of the heating wire of the first heater face and the second heater face.

In addition, in the present invention, the movable clamp includes: a second lower clamp having an upper surface formed in an arc shape concave downward; a second upper clamp having a lower surface formed in a concave arc shape and installed on an upper portion of the second lower clamp; and a fastening part for fastening the second lower clamp and the second upper clamp, wherein protruding bodies are formed in the second lower clamp to protrude in the longitudinal direction of the second fusion target at positions adjacent to both ends, and the protruding bodies include The guide rod through-holes through which the guide rods pass are respectively formed, and the cross-sections of the protruding bodies have the same center as the guide rod through-holes, have a larger diameter than the guide rod through-holes, and have a hollow cylindrical shape. Friction member insertion grooves into which the friction member is inserted are respectively formed, and the upper surfaces of the protruding bodies are formed to extend to the friction member insertion grooves, and pressure bolt fastening grooves to which the pressure bolts are fastened are respectively formed, and the movable clamps are When the pressure bolts are fastened and the ends of the pressure bolts press the friction members, the friction members come into contact with the guide rods, and the outer diameter of one guide rod among the guide rods is formed to be the same as the guide rod through hole of the movable clamp. It is preferable that the outer diameter of the other guide rod among the guide rods is formed smaller than the guide rod through hole, and the movable clamp is rotatably installed about the one guide rod as an axis.

In addition, in the present invention, guide grooves are respectively formed in the guide rods in the longitudinal direction from the end face coupled to the fixing clamp, and bolt insertion holes communicating up to the guide groove are formed on the outer peripheral surface of the guide rods, respectively, and the heat welding machine is movably installed along the guide rods, further comprising heater separation means to which the heater is installed, each of the heater separation means including a catch guide rod movably installed in a guide groove of the guide rod; It is formed in a hollow cylindrical shape and is movably installed on the guide rod, and includes a pair of locks each coupled to the stopper guide rod by bolts, and the locks are installed so as to be positioned at the front and rear of the movable clamp, respectively. it is preferable

According to the present invention having the above problems and solutions, the outer diameters of the guide rods, which are the movement paths of the movable clamp, are formed differently, so that the movable clamp is movable in the vertical direction, so that the fusion objects are not aligned due to the tolerance of the outer circumferential surface. Even in this case, by moving the movable clamp, the welding operation can be smoothly performed by aligning the centers of the welding objects.

In addition, according to the present invention, since the heater separating means is installed inside the guide rod except for the clamp on which the heater is mounted, the interval between the fixed clamp and the movable clamp is widened by the length of the heater separating means, thereby increasing the overall length of the device. Not only can it be prevented, but it can also be prevented from being damaged by an external impact.

In addition, according to the present invention, the distance of the hooks mounted on the heater separating means can be adjusted arbitrarily according to the type of the fusion target, so that even if the length protruding from the clamp is changed according to the fusion target, the heating, fusion operation and heater separation of the fusion targets are performed. It is possible to arbitrarily adjust the distance that can be achieved smoothly.

In addition, according to the present invention, when the fusion target is heated by the heater by forming a ventilation hole in the heater faces coupled to the fusion target, the air inside the fusion target is circulated with the outside air and cooled, thereby cooling the inside air is heated, and it is possible to prevent the inner peripheral surfaces of the fusion objects from being deformed by heat.

1 is a perspective view of a pipe clamping device to which the prior art is applied.
2 is a plan view of the prior art.
Figure 3 is a perspective view of the thermal fusion machine of the present invention.
4 is a perspective view of the pedestal of FIG. 3 ;
Figure 5 is a perspective view of the fixing clamp of Figure 3;
Figure 6 is a perspective view of the guide rod of Figure 3;
7 is a perspective view of the movable clamp of FIG. 3 .
8 is a cross-sectional view of the heater separating means of FIG.
9 is a perspective view of a heater mounted on the heater separating means of FIG. 3 .
10 is a cross-sectional view illustrating a heating process of a heater.
11 is an exemplary view for explaining a state in which the movable clamp moves up and down.
12 is an exemplary view illustrating a state in which a pipe and a socket, which are to be fused, are fixed through clamps and brought into contact with a heater.
13A is an exemplary view illustrating a state in which the rear movement of the heater separating means is restricted.
13B is an exemplary view illustrating a state in which a heater and a pipe are separated by a heater separating means.
14A is an exemplary view showing a state in which the rear movement of the movable clamp is restricted by the heater separating means.
14B is an exemplary view illustrating a state in which the heater and the socket are separated by the heater separating means.

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

Figure 3 is a perspective view of the thermal fusion machine of the present invention.

The heat welding machine 1 includes a pedestal 2 and a fixing clamp 3 installed on one side of the pedestal 2 to fix a pipe or socket (hereinafter referred to as 'fusion object'), and one end to the fixing clamp 3 . The first and second guide rods (4a) and (4b) installed vertically and parallel to the pedestal (2), and the guide rods (4a), (4b) are movably installed to prevent the fusion target. It consists of a moving clamp 5 for fixing, and heater separation means 6a and 6b which are movably installed on the guide rods 4a and 4b and to which a heater 7 to be described later is attached and detached.

At this time, for convenience of explanation, the direction from the movable clamp 5 to the fixing clamp 3 will be described as the front.

4 is a perspective view of the pedestal of FIG. 3 ;

The pedestal 2 includes a main frame 21 having a rectangular frame shape, and a movement limiting unit 22 installed at the rear of the main frame 21 .

The main frame 21 is formed in the shape of a square frame, the fixing clamp 3 is installed on the side located in the front, and the movement limiting part 22 is installed on the side located at the rear.

The movement limiter 22 is formed of a plate having an arc shape with a concave upper portion, and limits the rear movement range of the movable clamp 5 and the heater separating means 6a and 6b.

In addition, the guide rods (4a), (4b) are coupled to the front surface of the movement limiting part (22).

Figure 5 is a perspective view of the fixing clamp of Figure 3;

The fixing clamp 3 is installed on the main frame 21 , and is installed on a side facing the movement limiter 22 .

In addition, the fixing clamp 3 is formed in an arc shape with an upper surface concave downwards, and a first lower clamp 31 installed on the main frame 21 , and an arc shape with a lower surface concave upwards, the first lower clamp 31 ), the first upper clamp 32 installed on the upper part, and the fastening part respectively installed at both ends of the first lower clamp 31 to fix both ends of the first lower clamp 31 and the first upper clamp 32 . (33) and the first lower clamp 31 and the first upper clamp 32 of the first liner 34 of the hollow semi-disk shape respectively installed on the inner peripheral surface.

The first lower clamp 31 is formed in an arc shape with an upper surface concave downward, and a lower end portion is coupled to the main frame 21 .

The first upper clamp 32 is positioned above the first lower clamp 31 , and both ends are fixed to both ends of the first lower clamp 31 by fastening parts 33 .

As shown in FIGS. 5 and 6 , the first liners 34 are formed in a hollow semi-disk shape and installed so that their outer peripheral surfaces are in contact with the inner peripheral surfaces of the first lower clamp 31 and the first upper clamp 32 .

At this time, since the first liners 34 are installed to be detachable from the clamps 31 and 32, they can be replaced according to the outer diameter of the fusion target fixed therein.

At this time, for convenience of explanation, it has been described that one fixing clamp 3 is installed, but the number of fixing clamps is not limited thereto, and a plurality of fixing clamps may be installed.

Figure 6 is a perspective view of the guide rod of Figure 3;

The first guide rod 4a is formed in a rod shape, as shown in FIG. 3 , and both ends are respectively on the rear surface of the first lower clamp 31 of the fixing clamp 3 and the front surface of the movement limiter 22 . are combined At this time, the longitudinal direction of the first guide rod (4a) is parallel to the longitudinal direction of the fusion target fixed by the fixing clamp (3).

In addition, a guide groove 41 and a bolt insertion hole 42 communicating from the guide groove 41 to the outer peripheral surface of the first guide rod 4a are formed in the first guide rod 4a.

The guide groove 41 is formed in the longitudinal direction of the guide rod 4 from the front end of the first guide rod 4a, and the engaging guide rod 61 of the heater separating means 6 to be described later is movably inserted. .

The bolt insertion hole 42 is formed in a long hole shape that communicates from the guide groove 41 to the outer circumferential surface of the first guide rod 4a, and the coupling bolt 63 of the heater separating means 6 to be described later is inserted.

At this time, the first guide rod (4a) is preferably installed so that the bolt insertion hole (42) faces downward during installation.

In addition, the outer diameter of the first guide rod (4a) is formed to be the same as the inner diameter of the guide rod through hole (5111) formed in the second lower clamp (51) of the movable clamp (5) to be described later.

The second guide rod (4b) is formed in the same shape and structure as the first guide rod (4a), the outer diameter is formed smaller than the first guide rod (4a) is formed smaller than the inner diameter of the guide rod through hole (5111) .

These guide rods (4) are provided with movable clamps (5) and heater separation means (6a), (6b) movably.

7 is a perspective view of the movable clamp of FIG. 3 .

The movable clamp 5 includes a second lower clamp 51 formed in an arc shape with an upper surface concave downward, and a second upper clamp 51 with a lower surface formed in an arc shape concave upward and installed on the second lower clamp 51 . Clamp 52, fastening parts 53 installed at both ends of the second lower clamp 51 to fix both ends of the second lower clamp 51 and the second upper clamp 52, and the second lower clamp 51 and the second liners 54 in the shape of a hollow semi-disk respectively installed on the inner circumferential surfaces of the second upper clamp 52 .

The second lower clamp 51 is formed in an arc shape with an upper surface concave downward, and is installed so that the guide rods 4a and 4b are respectively penetrated at both ends to move forward and backward along the guide rods 4a and 4b. installed possible.

The second upper clamp 52 is positioned above the second lower clamp 51 , and both ends are fixed to both ends of the second lower clamp 51 by fastening parts 53 .

The second liners 54 are formed in a hollow semi-disk shape and are installed so that their outer peripheral surfaces are in contact with the inner peripheral surfaces of the second lower clamp 51 and the second upper clamp 52 .

These second liners 54 are in contact with the outer circumferential surface of the fusion target positioned inside the second lower clamp 51 and the second upper clamp 52 , and are connected to the second lower clamp 51 by the fastening parts 53 . And when the second upper clamp 52 is fixed, pressing the outer peripheral surface of the fusion object to fix the fusion object.

At this time, since the second liners 54 are installed to be detachable from the clamps 51 and 52, they can be replaced according to the outer diameter of the fusion target fixed therein.

In addition, at both ends of the second lower clamp 51, each block-shaped protruding body 511 is formed to protrude rearward.

Guide rod through-holes 5111 penetrating from the rear surface to the front surface of the second lower clamp 51 are formed on the rear surface of the protruding body 511, respectively, and guide rod through-holes 5111 are formed in the rear of the guide rod through-hole 5111. ) is formed with a friction member insertion groove 5112 having a larger diameter than the diameter of the.

In addition, a pressing bolt fastening groove 5113 communicating up to the friction member insertion groove 5112 is formed on the upper surface of the protruding body 511 .

Friction members 512 having a hollow cylindrical shape are respectively inserted into the friction member insertion grooves 5112 .

In addition, the pressing bolts 513 are fastened to the pressing bolt fastening groove 5113 .

At this time, the friction member 512 has an inner diameter larger than the outer diameter of the guide rods 4a and 4b, so that contact with the guide rods 4a and 4b is limited in normal times.

The pressing bolt 513 is fastened to the pressing bolt fastening groove 5113 formed in the protruding body 511, and is contacted and pressed with the friction member 512 according to the fastening degree.

At this time, when the friction member 512 is pressed by the fastening of the pressure bolt 513 to the guide rods 4a and 4b, the friction member 512 comes into contact with the friction member 512, so that the frictional force acts by the friction member 512.

Through this, the movable clamp 5 is prevented from shaking due to external shocks and vibrations due to the frictional force of the friction member 512, thereby preventing the fusion target fixed inside the movable clamp 5 from shaking. .

In addition, the movable clamp 5 is installed to be movable along the guide rods 4 by the driving force of the driving means by the driving means (not shown) is installed.

In this case, as the driving means, various known means such as electric, hydraulic, mechanical lever type, etc. may be used.

8 is a cross-sectional view of the heater separating means of FIG.

As shown in FIG. 8, the heater separation means 6 includes a catch guide rod 61, locks 62a and 62b, and fixing bolts 63a and 63b.

The catch guide rod 61 is formed in a rod shape, and a plurality of fixing bolt insertion holes 611 into which the fixing bolts 63 are inserted are formed in the longitudinal direction.

At this time, the catch guide rod 61 is movably installed in the guide groove 41 formed in the guide rod 4 .

The hooks 62a and 62b are formed in a hollow cylindrical shape, and fixing bolt coupling holes 621a and 621b that penetrate from the outer circumferential surface to the inner circumferential surface are respectively formed.

At this time, the stoppers (62a), (62b) are formed so that the diameter of the hollow is greater than or equal to the outer diameter of the guide rod (4), the guide rod (4) is inserted into the hollow inside and is movably installed on the guide rod (4). .

In addition, the stoppers (62a), (62b) are installed so as to be positioned at the front and rear of the movable clamp (5), respectively, when assembling.

At this time, the heater 7 is installed outside the locking member 62a located in the front of the movable clamp 5 .

Fixing bolts (63a), (63b) are fastened to the fixing bolt coupling holes (621a), (621b) formed in the catches (62a), (62b) when coupled, respectively, the bolts inserted in the guide rod (4) They are respectively inserted into one of the fixing bolt insertion holes 611 formed in the ball 42 and the catch guide rod 61 .

At this time, the stoppers (62a), (62b) are the ends of the fixing bolts (63a), (63b) are inserted into the fixing bolt insertion hole (611) formed in the stopper guide rod (61) is moved together with the stopper guide rod (61) .

The heater separating means 6 configured as described above is installed to be movable forward and backward along the guide rod 4 , and the backward movement is limited by being in contact with the front surface of the movement limiting unit 22 .

In addition, the heater separating means 6 is a fusion of one of the fusion objects fixed to the fixing clamp 3 or the movable clamp 5 in the process of heating the fusion objects with a heater 7 to be described later in order to heat-seal the fusion objects. When the object is attached to the heater 7, it is possible to smoothly separate the fusion objects attached to the heater 7 by using the limited movement range.

9 is a perspective view of a heater mounted on the heater separating means of FIG. 3 .

The heater 7 includes a disk-shaped heater plate 71 having a heating wire installed therein, a pipe heater face 72 and a socket heater face 73 respectively installed on the front and rear surfaces of the heater plate 71 and coupled to the fusion target. ), engaging portions 74a and 74b formed on both sides of the heater plate 71 , and a handle 75 installed on the upper portion of the heater plate 71 .

The heater plate 71 is formed in a disk shape, and heats the pipe heater face 72 and the socket heater face 73 respectively installed on the front and rear surfaces.

At this time, in the case of the conventional heater, when the pipe heater face and the socket heater face are continuously heated by the heater plate, the temperature of the upper part is higher than the temperature of the lower part, and thus there is a problem that the fusion objects cannot be melted evenly.

In order to solve this problem, in the heater plate 71 of the present invention, the heating wire is installed at a position adjacent to the lower end of the pipe heater face 72 and the heater face 73 for the socket. For this reason, the lower end of the pipe heater face 72 and the socket heater face 73 installed on the heater plate 71 is heated first, and the heat from the lower end is transferred to the upper end.

As a result, the lower end of the pipe heater face 72 and the heater face 73 for the socket is heated by the heater plate 71, and the heat transferred to the lower end is configured to be transferred to the upper part, thereby preventing heat from being concentrated in the upper part. Heating of the fusion site is performed evenly.

The pipe heater face 72 is formed in a hollow cylindrical shape with a closed rear end, and an inclined surface 721 is formed on an outer circumferential surface of the pipe heater face 72 at a position adjacent to the rear end.

At this time, the inclined surface 721 is formed such that the outer diameter increases from the front to the rear, so that the diameter of the pipe heater face 72 is larger than the diameter of the front with the inclined surface 721 as a boundary.

In addition, the pipe heater face 72 has a stepped 722 formed on its inner circumferential surface, and the inner diameter of the pipe heater face 72 is formed so that the rear diameter is smaller than the front diameter with the stepped 722 as a boundary.

This step 722 limits the longitudinal movement of the pipe (A) by contacting the end of the pipe (A) when the pipe (A) is inserted into the pipe heater face (72).

In addition, a ventilation hole 723 in the shape of a long hole communicating up to the inner peripheral surface is formed on the outer peripheral surface of the pipe heater face 72 . At this time, the ventilation hole 723 is formed to be long in the width direction, and is preferably formed behind the step 722 .

In addition, the ventilation hole 723 is preferably located at an upper portion when the pipe heater face 72 is coupled to the heater plate 71 .

These ventilation holes 723 connect the inside and outside of the pipe heater face 72 to prevent the inside of the pipe heater face 72 from being sealed when the pipe A is inserted into the pipe heater face 72. .

The heater face 73 for a socket is formed in a hollow cylindrical shape with a closed rear end, and an inclined surface 731 is formed on an outer peripheral surface of the heater face 73 for a socket at a position adjacent to the rear end.

At this time, the inclined surface 731 is formed such that the outer diameter increases from the front to the rear, so that the diameter of the heater face 73 for the socket is larger than the diameter of the front with the inclined surface 731 as a boundary.

When the heater face 73 for the socket is inserted into the socket B, the inclined surface 731 contacts the end of the socket B to limit the longitudinal movement of the socket B.

In addition, a ventilation hole 732 in the shape of a long hole communicating to the inner peripheral surface is formed on the outer peripheral surface of the heater face 73 for the socket. At this time, the ventilation hole 732 is formed to be long in the width direction, and is preferably formed on the inclined surface 731 or the rear of the inclined surface 731 .

In addition, the ventilation hole 732 is preferably located at the top when the heater face 73 for the socket is coupled to the heater plate 71 .

This socket heater face 73 is installed on the heater plate 71, is installed on the surface opposite to the pipe heater face 72, is inserted into the socket (B) to heat the inner peripheral surface of the socket (B).

10 is a cross-sectional view illustrating a heating process of a heater.

In the conventional heater, when one end of the fusion target is coupled to the heater face, one end of the fusion target is closed by the heater face, so the air inside the fusion target is circulated with the outside air through the other end of the fusion target.

Therefore, when the air inside the fusion target is heated by the heater, heat is transferred with the outside air through the other end of the fusion target.

In this process, since the inner peripheral surface of the fusion object is also heated except for the coupling part with the heater face, a problem occurs that the inner peripheral surface except for the coupling part is deformed by heat.

In addition, when the other end of the fusion object is blocked, the air inside the fusion object is heated by the heater, but cannot be discharged, so that the temperature and pressure are continuously increased. Due to this, the fusion target is not only deformed by the high temperature and high pressure internal air, but also the bonding force with the heater face is increased, so that the separation cannot be performed smoothly.

In order to solve this problem, the heater 7 of the present invention has ventilation holes 723 and 732 in the pipe heater face 72 and the socket heater face 73 as shown in FIGS. 9 and 10, respectively. is formed

The heater 7 heats the outer peripheral surface of one end of the pipe A inserted into the pipe heater face 72 and the inner peripheral surface of one end of the socket B into which the heater face 73 for the socket is inserted.

At this time, the heater faces 72 and 73 are provided with ventilation holes 723 and 732 at positions adjacent to the coupling portion between the pipe A and the socket B (hereinafter referred to as 'fusion objects'), respectively. Air inside the fusion objects is circulated through the ventilation holes 723 and 732 .

Due to this, when the one end and the internal air are heated together by the heater, the internal air is heated and the internal air is heated because heat transfer is made between the internal air and the external air and the vents 723 and 732. It is possible to prevent the inner peripheral surface of the objects from being deformed.

In addition, the heater 7 is configured to circulate the air inside the fusion objects with the external air through the ventilation holes 723 and 732 even when the other ends of the fusion objects are blocked, thereby increasing the temperature and pressure of the internal air. can be prevented from being

The heater 7 configured in this way is configured such that the lower end of the heater faces 72 and 73 is first heated by the heater plate 71, and the heat transferred to the lower end is transferred to the upper end, so that heat is concentrated on the upper part. it can be prevented

In addition, the heater 7 has ventilation holes 723 and 732 formed in the heater faces 72 and 73, respectively, so that the air inside the fusion objects heated together when the coupling part is heated by the heater 7 is heated. Heat is transferred with the external air by the ventilation holes 723 and 732 to prevent the inner peripheral surfaces of the fusion objects from being deformed by the heated internal air.

The locking portions 74a and 74b are each formed with an insertion groove 741 into which the locking member 63a of the heater separating means 6 is inserted.

At this time, the insertion grooves 741 formed in the locking portions 74a and 74b are formed in a shape corresponding to the hooks 63a and 63b of the heater separation means 6, respectively, so that the heater separation means (6). It is not only smoothly mounted to the latch 63a of the , but also prevents the heater 7 from being separated from the heater separating means 6 by vibration or shock after mounting.

This heat welding machine (1) is to seat the objects to be fused to the lower clamps (31) and (51) of the fixing clamp (3) and the movable clamp (5), then the upper clamps (32), (52) and the fastening part By pressing through (33) and (53), the fusion objects are fixed to the fixing clamp (3) and the movable clamp (5), respectively. In addition, the fusion objects fixed to the inside of the clamps (3) and (5) are pressed by the upper surfaces (32) and (52), and the center is changed.

At this time, the fusion objects fixed to the clamps (3) and (5) are often misaligned with each other when fixed to the clamps (3) and (5) due to the tolerance of the outer circumferential surface, so that the fusion process is not performed smoothly. will occur

11 is an exemplary view for explaining a state in which the movable clamp moves up and down.

As shown in FIG. 11 , in the heat welding machine 1 , the outer diameter of the first guide rod 4a is the same as the inner diameter of the guide rod through hole 5111 formed in the movable clamp 5 , and the second guide rod The outer diameter of (4b) is formed smaller than the inner diameter of the guide rod through hole (5111).

In the movable clamp 5, the outer diameter of the first guide rod 4a and the inner diameter of the guide rod through hole 5111 are the same, and the outer diameter of the second guide rod 4a is smaller than the inner diameter of the guide rod through hole 5111. Since it is formed, it is rotatably installed around the first guide rod 4a.

At this time, the fusion object fixed to the inside of the movable clamp 5 rotates together when the movable clamp 5 is rotated, and since the rotation radius is large, the movement in the left and right direction hardly occurs and moves in the vertical direction.

This heat welding machine 1 is a movable clamp 5 even if the center of the fusion object fixed inside the fixed clamp 3 and the fusion object fixed inside the movable clamp 5 is displaced due to tolerance of the fusion objects, etc. ), the center of the fusion object fixed inside is configured to be movable in the vertical direction, so that the fusion process can be smoothly performed by aligning the centers of the fusion objects fixed inside the fixing clamp 3 and the movable clamp 5. .

12 is an exemplary view illustrating a state in which a pipe and a socket to be fused through clamps are fixed and brought into contact with a heater.

The heat welding machine 1 fixes the pipe (A) to the movable clamp (5) and the socket (B) to the fixing clamp (3) as shown in FIG. 12 .

In this case, for convenience of explanation, it has been described that the pipe is fixed to the movable clamp and the socket is fixed to the fixed clamp as an example, but the fixing positions may be changed from each other. In addition, the heat welding machine 1 can proceed butt welding by allowing the pipes to be respectively fixed to the fixed clamp and the movable clamp.

In addition, the heat fusion machine 1 moves the moving clamp 5 forward through the driving means in the state where the heater 7 is mounted on the heater separating means 6 so that the pipe A is connected to the pipe heater face of the heater 7 711 is inserted into the inside, the heater 7 is pressed forward by the pipe A, so that the heater face 712 for the socket is inserted into the socket B.

At this time, the heater 7 heats the outer circumferential surface of the end of the pipe (A) inserted into the pipe heater face 711, and heats the inner circumferential surface of the socket B into which the heater face 712 for the socket is inserted.

In addition, when the end of the pipe (A) and the socket (B) is melted through the heater (7), the heat welding machine (1) moves the moving clamp (5) to the rear to remove the heater (7) and then the moving clamp (5) When the pipe (A) is inserted into the socket (B) by moving it forward, the pipe (A) and the socket (B) are fusion-bonded.

At this time, in the process of heating the outer circumferential surface of the pipe (A) and the inner circumferential surface of the socket (B) through the heater (7), the heat fusion machine (1) has the outer circumferential surface of the pipe (A) and the inner circumferential surface of the socket (B) on the heater (7). The situation of sticking without falling occurs frequently, and the outer circumferential surface of the pipe (A) and the inner circumferential surface of the socket (B) are attached to the pipe (A) attached to the heater (7) even if the operator does not directly separate them by the heater separating means (6). ) and socket (B) can be separated.

13A is an exemplary view illustrating a state in which the rear movement of the heater separating means is restricted, and FIG. 13B is an exemplary view illustrating a state in which the heater and the pipe are separated by the heater separating means.

13a shows the moving clamp 5 until the rear movement of the heater separating means 6 is restricted through the driving means in a state where the end of the pipe A fixed to the moving clamp 5 is attached to the heater 7 is moved backward, and FIG. 13b shows a state in which the heater 7 and the pipe A are separated by pressing the pipe A rearward in a state in which the rear movement of the heater separating means 6 is restricted.

When the heat welding machine 1 moves the moving clamp 5 rearward through the driving means when the pipe A and the heater 7 are attached, the pipe A fixed to the moving clamp 5 moves backward. In addition to moving to the pipe (A) and the heater (7) attached to the mounted heater separation means (6) is also moved to the rear.

At this time, the heater separation means 6 is in contact with the front surface of the movement limiter 22, the rear surface of the locking member (62b) as shown in Figure 13a, the rear movement range is limited.

In this state, when the heat welding machine 1 is continuously moved through the driving means, the position of the heater 7 coupled with the heater separating means 6 is fixed because the movement of the heater separating means 6 is limited. In the case of the pipe (A) combined with the moving clamp (5), since the movement of the moving clamp (5) is not limited, it is pressed backward, so that the heater (7) and the pipe (A) are connected as shown in FIG. 13B. are separated

14A is an exemplary view showing a state in which the rear movement of the movable clamp is restricted by the heater separating means, and FIG. 14B is an exemplary view showing a state in which the heater and the socket are separated by the heater separating means.

Figure 14a shows that when the movable clamp 5 is moved backward after heating the outer circumferential surface of the pipe A and the inner circumferential surface of the socket B, the socket B fixed to the fixing clamp 3 is connected to the heater 7 and It is a state in which the moving clamp 5 is moved backward until the rear movement of the moving clamp 5 is restricted through the driving means in the attached state, and FIG. 14b shows the socket ( B) is pressed backward to separate the ends of the heater 7 and the socket B.

When the heat welding machine 1 moves the movable clamp 5 backward through the driving means when the socket B and the heater 7 are attached, the movable clamp 5 is moved rearward.

At this time, as shown in Fig. 14a, the movable clamp 5 is in contact with the front surface of the latch 62b of the heater separating means 6 so that the rear movement is limited.

In addition, since the heater separating means 6 is in a state in which the socket B fixed to the fixing clamp 3 is attached to the heater 7, the movement is restricted.

Therefore, even when the moving clamp 5 is pressed backward by the driving means, the rear movement is limited by contacting the heater separating means 6, and the heater separating means 6 is pressed backward.

When this state is maintained, the heater 7 is separated from the socket B as shown in FIG. 14B by the rear pressing force.

At this time, for convenience of explanation, the socket (B) is fixed to the fixing clamp (3) and only the case where the pipe (A) is fixed to the movable clamp (5) has been described as an example, but the pipe is fixed to the fixing clamp (3) It is also applicable when the socket is fixed to the moving clamp (5) and when the pipes are fixed to the fixed clamp (3) and the moving clamp (5).

The heat welding machine 1 configured as described above uses the driving means even if the pipe A and the socket B are attached to the heater 7 in the process of heating the pipe A and the socket B through the heater 7 . When the moving clamp 5 is moved backward through the pipe (A) and the socket (B), the fusion target attached to the heater (7) is smoothly separated by the heater separating means (6).

1: heat welding machine 2: pedestal
21: main frame 22: movement limiter
3: fixing clamp 31: first lower clamp
32: first upper clamp 33: fastening part
34: first liner
4: guide rod 41: guide groove
42: bolt insertion hole 5: moving clamp
51: second lower clamp 52: second upper clamp
53: fastening part 54: second liner
6: Heater separation means
61: catch guide rod 62: catch
63: fixing bolt 7: heater
71: heater plate 72: engaging part
74: handle

Claims (9)

In the heater for heating the ends of the first fusion object and the second fusion object:
the heater is
a plate-shaped heater plate having a heating wire installed therein;
a first heater face formed in a hollow cylindrical shape, installed on one surface of the heater plate, and into which the first fusion target is hollow;
It is formed in a hollow cylindrical shape and is installed on the other surface of the heater plate, and includes a second heater face whose end is inserted into the hollow inside of the second fusion target,
The heater, characterized in that the first heater face and the second heater face, characterized in that the ventilation holes communicating to the inner hollow is formed on the outer peripheral surface, respectively. The method according to claim 1, wherein the first heater face has a step formed on an inner circumferential surface, and when a direction from the second heater face toward the first heater face is referred to as a front, the inner diameter of the front with the step as a boundary is the rear is formed larger than the inner diameter of
The vent hole of the first heater face is a heater, characterized in that formed on the outer peripheral surface rear than the step. The method according to claim 2, wherein an inclined surface whose diameter increases toward the front is formed on the outer peripheral surface of the second heater face,
The vent hole of the second heater face is formed on the inclined surface or on the outer peripheral surface in front of the inclined surface. The method according to claim 3, wherein the heater plate is
The heater, characterized in that the heating wire is installed at a position corresponding to the lower end of the first heater face and the second heater face. A pedestal, at least one or more fixing clamps installed on one side of the pedestal to fix the first fusion target, and guide rods having one end coupled to the fixing clamps and installed parallel to the first fusion target; Guide rod through holes through which the guide rods pass are formed so as to be movably installed along the guide rods, and at least one or more movable clamps for fixing the first fusion object and the second fusion object to be fused, the fixing clamps and In a thermal welding machine including a heater installed between the movable clamps to heat the ends of the first and second welding objects:
the heater is
a plate-shaped heater plate having a heating wire installed therein;
a first heater face formed in a hollow cylindrical shape and installed on one surface of the heater plate, the end of which is inserted into the hollow of the first fusion object or into which the end of the first fusion object is inserted into the hollow inside;
A second heater face formed in a hollow cylindrical shape and installed on the other surface of the heater plate, the end of which is inserted into the hollow of the second fusion object or into which the end of the second fusion object is inserted into the hollow inside,
The heat welding machine, characterized in that the first heater face and the outer peripheral surface of the second heater face, respectively, the ventilation holes communicating up to the hollow is formed. 6. The method of claim 5, wherein the first heater face is
A step is formed on the inner circumferential surface, and when the direction from the second heater face toward the first heater face is referred to as the front, the inner diameter of the front is formed larger than the inner diameter of the rear with the step as a boundary,
The ventilation hole of the first heater face is formed on the outer peripheral surface of the rear than the step,
On the outer peripheral surface of the second heater face
An inclined surface that increases in diameter toward the front is formed,
The vent hole of the second heater face is formed on the inclined surface or on the outer peripheral surface in front of the inclined surface. 7. The method of claim 6, wherein the heater plate is
A heater and a heat welding machine having the same, wherein the heating wire is installed at a position corresponding to the lower ends of the first and second heater faces. The method according to claim 7, wherein the movable clamp
a second lower clamp whose upper surface is formed in an arc shape concave downward;
a second upper clamp having a lower surface formed in a concave arc shape and installed on an upper portion of the second lower clamp;
and a fastening part for fastening the second lower clamp and the second upper clamp,
The second lower clamp has
Projecting bodies are formed to protrude in the longitudinal direction of the second fusion object at positions adjacent to both ends,
The guide rod through holes through which the guide rods pass are formed in the protruding bodies, respectively,
In the cross-section of the protruding bodies, friction member insertion grooves having the same center as the guide rod through holes, having a larger diameter than the guide rod through holes, and into which the hollow cylindrical friction member is inserted, are respectively formed,
The upper surfaces of the protruding bodies are formed to extend to the friction member insertion grooves, and the pressing bolt fastening grooves to which the pressing bolts are fastened are respectively formed,
The moving clamp
When the pressure bolts are fastened and the ends of the pressure bolts press the friction members, the friction members are in contact with the guide rods,
The outer diameter of one guide rod among the guide rods is formed to be the same as the guide rod through hole of the movable clamp,
The outer diameter of the other guide rod among the guide rods is formed smaller than the guide rod through hole,
The movable clamp is a heat welding machine, characterized in that it is installed rotatably about the one-side guide rod as an axis. 9. The method according to claim 8, wherein guide grooves are formed in the guide rods in the longitudinal direction from the end face coupled to the fixing clamp, and bolt insertion holes communicating up to the guide groove are formed on the outer circumferential surface of the guide rods, respectively,
The heat fusion machine
It is movably installed along the guide rods, further comprising heater separation means to which the heater is installed,
Each of the heater separation means is
a stopper guide rod movably installed in the guide groove of the guide rod;
It is formed in a hollow cylindrical shape and is movably installed on the guide rod, and includes a pair of locks each coupled to the lock guide rod by a bolt,
The locks are
Heat welding machine, characterized in that it is installed so as to be positioned at the front and rear of the movable clamp, respectively.

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