KR20100098792A - Apparatus for junction of plastic elbow pipe - Google Patents

Abstract

PURPOSE: A junction apparatus for plastic elbow pipes is provided to improve the reliability of products by maintaining a welding portion against an external impact or thermal denaturation. CONSTITUTION: A junction apparatus for plastic elbow pipes comprises a base(80), first and second moving plates(70,75), first and second clamps(40,50), and a lift(10). Rails(83,84) are installed to the top of the base. Left and right fixed plates(82,87) are connected to left and right cylinders(81,86) of the base. The first and second moving plates are fixed to the right and left fixed plates, respectively, and slid on the rails. The first and second clamps are fixed to the first and second moving plates and secure elbow pipes. The lift supports a hot plate between the first and second clamps.

Description

Plastic Elbow Pipe Joint {Apparatus for Junction of Plastic Elbow Pipe}

The present invention relates to a plastic elbow pipe joining device, and more particularly, to an apparatus for joining an elbow (curve) portion of a plastic pipe having a certain diameter.

In general, the thermoplastic resin in plastic or synthetic resin becomes soft and flexible with each heat, but hardens again when the temperature decreases.

Conventionally, in order to join and connect a pipe made of thermoplastic resin, a welding method by thermal fusion is performed by melting a plastic rod with a plastic welding rod on the outer circumference of a pipe facing each other after facing a cross section of a pair of pipes.

However, the conventional welding method by heat fusion requires a high degree of skill, but when the non-skilled worker welds the plastic pipe, the welding quality is uneven and the defect rate is high, and thermal deformation due to external conditions, for example, impact or temperature change, is caused. There is a problem in that the reliability of the product is increased, such as torn or damaged on the weld.

Moreover, in the case of joining a straight pipe in the related art, the joining of a pipe bent at a certain angle such as an elbow, that is, an elbow, increases the defective rate of the product according to the joining even in the case of skilled workers.

The present invention is to solve the above problems, the present invention is to improve the uniformity and strength of the productivity and quality by automating heating, joining and cooling when joining the plastic elbow pipe.

The present invention, in order to achieve the above object, the rail is mounted on the upper side and the left and right cylinders mounted on the left and right fixed plate is connected to the inside of the rectangular parallelepiped base; A first moving plate fixed on the right fixing plate and sliding on a rail; A second moving plate fixed on the left fixing plate and slid over the rail and corresponding to the first moving plate; A first clamp fixed to the first moving plate and fixing an elbow pipe; A second clamp fixed to the second moving plate and fixing an elbow pipe; It is characterized in that it provides a plastic elbow pipe joining device comprising an elevator for supporting a hot plate for lifting up and down between the first and second clamp.

According to the present invention, the elbow pipe can be uniformly fused, the welding quality is uniform, the defect rate is minimized, and the welding part is firm due to external deterioration or thermal deformation due to temperature change. Is improved and productivity is improved.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the plastic elbow pipe joining apparatus of the present invention.

1 is an exploded perspective view showing a plastic elbow pipe joining apparatus according to the present invention, Figure 2 is a combined perspective view, Figure 3 is a cross-sectional view showing the configuration of the position adjustment member mounted on the cradle.

First, the plastic elbow pipe joining apparatus of the present invention is to be able to heat-bond uniformly and firmly the joint portion of the elbow pipe.

Base 80 is a rectangular parallelepiped, the frame is coupled to the front, rear, left and right in a box shape. Rails 83 and 84 are mounted on the upper end of the base 80, that is, on the front and rear frames, respectively. The rails 83 and 84 are intermittently mounted but can be mounted in series. The cylinder 81 and the cylinder 86 are symmetrically mounted on the inner side of the base 80, that is, the right side and the left side, and the first fixing plate 82 and the first fixing plate 82 The two fixed plates 87 are mounted.

In the base 80, a stopper 85 for restricting the lateral movement of the first moving plate 70 is formed on the rear surface. The stopper 85 restricts the movement of the first movement plate 70 when the first movement plate 70 moves to the left side, and does not restrict the movement of the first movement plate 70 which is later lowered and stopped. . In addition, a rotating shaft 89 is provided through the base 80. The rotating shaft 89 manually moves the second moving plate 75. Both sides of the rotation shaft 89 is coupled to the pinion 88, the gear is formed. The pinion 88 is engaged with the rack 77 formed at one lower end of the second moving plate 75. In addition, a sensor 90 for detecting movement of the first fixing plate 82 and the second fixing plate 87 is mounted inside the base 80.

The first moving plate 70 is fixed on the first fixing plate 82 on the right side and slides on the rails 83 and 84. At the lower end of the first movable plate 70, guide racks 71 are formed on the rails 83 and 84 for surface contact. The first moving plate 70 slides on the rails 83 and 84 of the base 80 according to the left and right movement of the first fixing plate 82 on the right side by the operation of the cylinder 81.

The second moving plate 75 is fixed on the left second fixing plate 87 and slides on the rails 83 and 84. The second movable plate 75 is installed to correspond to the first movable plate 70 on the right side, and the guide rack 76 which is in surface contact with the rails 83 and 84 is provided at the lower end of the second movable plate 75. Formed. The second moving plate 75 slides on the rails 83 and 84 of the base 80 according to the left and right movement of the second fixing plate 87 on the left side by the operation of the cylinder 86. A rack 77 geared with the pinion 88 coupled to the rotation shaft 89 is formed at the bottom of the front and rear surfaces of the second moving plate 75. Furthermore, a hole is formed at one side of the rotating shaft 89 so as to manually rotate the rotating shaft 89 by inserting a rod-shaped handle. Rotating the rotating shaft 89 may move the second fixing plate 87 left and right.

The first clamp 40 is fixed on the first moving plate 70 to fix the elbow pipe. The first clamp 40 is divided into an upper gripping portion 41 and a lower gripping portion 42, and a plurality of guide pins 44 formed at the edges of the upper gripping portion 41 have a lower grip portion 42. It is inserted into the bush (46, 47) consisting of a plurality of edges so as to be elevated. That is, the first clamp 40 is divided into an upper grip portion 41 and a lower grip portion 42, respectively, and a guide pin 44 fixed to the upper grip portion 41 is fixed to the lower grip portion 42. It is elevated through the bushes 46 and 47. The upper gripping portion 41 and the lower gripping portion 42 are formed with a through hole to support the elbow pipe inside the triangular prism shape. And the upper grip portion 41 is connected to the upper end of the support arm 62 of the first lift 60, the lower grip portion 42 is fixed to the first pedestal 43 to the first movable plate 70 have. The first lift 60 has a support arm 62 fixed to the upper end of the upper grip portion 41, the support arm 62 is elevated by the operation of the cylinder (61). Therefore, the lifting operation of the cylinder 61 is to allow the upper grip portion 41 fixed to the support arm 62 to be lifted. This is to insert and fix the elbow pipe into the through hole. The first lift 60 is fixed to the first pedestal 43. Fixing protrusions 45 protrude from the front of the upper holding portion 41 and the lower holding portion 42, respectively, and the fixing protrusions 45 are fastened with a fixed end such as a vice 48 to elbow pipes. Fix it so that it does not break out.

The second clamp 50 is fixed on the second moving plate 75 to fix the elbow pipe. The second clamp 50 corresponds to the same shape as the first clamp 40. The second clamp 50 is the second clamp 50 is divided into the upper grip portion 51 and the lower grip portion 52, the guide pins 54 formed of a plurality of edge portions of the upper grip portion 51 It is inserted into the bush (56, 57) consisting of a plurality on the edge of the lower grip portion 52 to be elevated. That is, the second clamp 50 is divided into the upper grip portion 51 and the lower grip portion 52, respectively, and the guide pins 54 fixed to the upper grip portion 51 are fixed to the lower grip portion 52. It is elevated through the bushes 56 and 57. The upper gripping portion 51 and the lower gripping portion 52 have a through hole formed therein so as to support the elbow pipe in the shape of a triangular prism. And the upper grip portion 51 is the upper end is connected to the support arm 67 of the second lift 65, the lower grip portion 52 is fixed to the first seat 43 to the first movable plate 70 have. The second lift 65 has a support arm 67 fixed to the upper end of the upper grip portion 51, the support arm 67 is elevated by the operation of the cylinder (66). Therefore, the lifting operation of the cylinder 66 is such that the upper grip portion 51 fixed to the support arm 67 is lifted. This is to insert and fix the elbow pipe into the through hole. The second lift 65 is fixed to the second seat 53. Fixing protrusions 55 protrude from the front surface of the upper grip portion 51 and the lower grip portion 52, respectively, and the fixing protrusions 55 are fastened by fixing means such as a vise 58 to remove the elbow pipe. Make sure that it can be fixed.

The elevator 10 supports the hot plate 30 for elevating between the first clamp 40 and the second clamp 50. The elevator 10 is provided with a cylinder 12 and a rod 13 on the holder 11, the guide 14 is coupled to both sides of the holder 11 in the vertical direction, and the guide 14 and the rod 13 The cradle 15 is configured at the bottom. The heating plate 30 is mounted on the holder 15, and the heating plate 30 is mounted on the support 34 fixed to the holder 15, and the planar heating element 32 is mounted on the mounting plate 15. ) Is attached.

Position adjusting member 20 is mounted on the holder 15, it is to support the support (34) coupled to the holder 15 by a constant pressure. Positioning member 20 is provided with a cylindrical case 21, the pressure port 22 for pressing the support hole 34 is coupled to one side of the case 21, the control unit 23 on the other side of the case 21 ) Are combined. Inside the case 21, a spring 24 is built in between the pressurizing opening 22 and the adjusting opening 23. In addition, the adjusting hole 23 is screwed with a nut 25 to adjust the elastic force of the spring 24 provided in the case 21 by adjusting the adjusting device 23. The pressure bearing force of the earth 34 can be adjusted. The position adjusting member 20 includes the first clamp 40 and the second clamp 50 after the hot plate 30 coupled to the support 34 is positioned between the first clamp 40 and the second clamp 50. After the pressurized pressure to a certain pressure is to modify the direction in which the direction proceeded in a certain direction according to the degree of melting of the elbow pipe to its original position.

As a component in the plastic elbow pipe joining apparatus of the present invention, a sensor (90) for detecting the position of the cylinder (12), the first and the second movable plate (75) for inputting and outputting the rod (13) by pneumatic pressure, and the first Various controls such as the operation of the stopper 85 for limiting the movement of the moving plate 70 and supplying power to the hot plate 30 are controlled by a control panel (not shown).

Operation of the plastic elbow pipe joining apparatus of the present invention made as described above will be described with reference to the drawings showing the elbow pipe joining process of FIGS. 4 to 13 in time series.

First, in FIG. 4, the first clamp 40 and the second clamp 50 are positioned at a predetermined distance with the bonding apparatus in an initial setting state, and the elevator 10 is mounted on the first clamp 40 and the second clamp 50. Is mounted on the hot plate 30. At this time, the upper holding portions 41 and 51 of the first clamp 40 and the second clamp 50 are separated from the lower holding portions 42 and 52. That is, the upper holding portions 41 and 51 are raised from the lower holding portions 42 and 52 by the support arms 62 and 67 of the first lift 60 and the second lift 65, respectively.

In FIG. 5, the elbow pipes 1 and 2 to be joined to the through holes between the first clamp 40 and the second clamp 50 are respectively inserted, and then the first lift 60 and the second lift 65 Lower the support arms 62 and 67 to fix the elbow pipes 1 and 2. At this time, the ends of the elbow pipes 1 and 2 to be joined are inserted and fixed to protrude from the left and right sides of the first clamp 40 and the second clamp 50, respectively.

In FIG. 6, when the elbow pipes 1 and 2 are fixed to the first clamp 40 and the second clamp 50, the cylinder 12 of the elevator 10 is operated to lower the rod 13. As the rod 13 descends, the hot plate 30 fixed to the holder 15 is lowered and inserted between the first clamp 40 and the second clamp 50. At this time, power is applied to the planar heating element 32 of the hot plate 30 to be raised to a predetermined temperature. In FIG. 7, the right cylinder 81 inside the base 80 is operated to move the first fixing plate 82 to the left to move the first clamp 40 fixed to the first moving plate 70. At this time, the first moving plate 70 moves to the stopper 85 formed on the rear surface of the base 80 while moving to the left side. In FIG. 8, the second clamp 50 on the left side is moved to the right side. This is because the left cylinder 86 inside the base 80 is operated so that the second fixing plate 87 is moved to the right, and the second clamp 50 fixed to the second moving plate 75 is moved. Therefore, the first clamp 40 and the second clamp 50 are moved from the left and right side with the hot plate 30 interposed therebetween. Then, the stopper 85 is released, that is, lowered so that the first moving plate 70 proceeds to the left side. The second clamp 50 is pressed toward the fixed first clamp 40 and the hot plate 30 and then presses the hot plate 30. The elbow pipe fixed to the first clamp 40 and the second clamp 50 by pressing the first clamp 40 and the second clamp 50 to press the hot plate 30 for a predetermined time, for example, 5 to 30 seconds. Melt the end of (1, 2).

In FIGS. 9 and 10, when the contact portions of the elbow pipes 1 and 2 are melted for a predetermined time, the second clamp 50 and the first clamp 40 respectively retreat to their original positions. 11, the hot plate 30 also rises and returns to its original position. After the hot plate 30 is raised in FIG. 11, the first clamp 40 is fixed after being advanced to the left, and in FIG. 12, the second clamp 50 is pressed while being advanced to the right. Therefore, the joining portion of the elbow pipes 1 and 2 fixed to the first clamp 40 and the second clamp 50 is pushed and opened for a predetermined time, for example, 5 to 30 seconds, and the bonding is performed.

After the joining of the elbow pipes 1 and 2 is completed, natural cooling is performed for a predetermined time so that the elbow pipes 1 and 2 are completely joined. In FIG. 13, when the coupling of the elbow pipes 1 and 2 is completed, the support arms 62 and 67 of the first lift 60 and the second lift 65 are raised to raise the first clamp 40 and the second. The upper grip portions 41, 51 of the clamp 50 are raised. And separates the coupled elbow pipe that was fixed between the upper and lower grip portions 41 and 51 and the lower and lower grip portions 42 and 52.

As described above, the bonded state of the elbow pipe for joining, referring to the cross-section of FIG. The elbow pipe joined by the joining device has a shape in which the elbow pipes 1 and 2 melted at the upper and lower portions of the joining portion, that is, the inner and outer joining portions of the elbow pipes 1 and 2. Therefore, the joining of the elbow pipe by the joining apparatus of the present invention will be more firmly bonded to the joint is formed on the inside and outside, and the joint will be more robust according to the time and the melting time of the end of the elbow pipe.

While the invention has been shown and described in connection with specific embodiments thereof, it is well known in the art that various modifications and changes can be made without departing from the spirit and scope of the invention as indicated by the claims. Anyone who has a can easily know.

1 is an exploded perspective view showing a plastic elbow pipe joining apparatus according to the present invention.

2 is a perspective view of the combination of FIG.

3 is a cross-sectional view showing the configuration of the position adjusting member mounted on the cradle.

4 to 13 are views showing the elbow pipe joining process in time series.

Figure 14 shows a joint section of the elbow pipe, Figure 14a is a joint section cross-section according to the prior art, Figure 14b is a joint section section according to the present invention.

Claims (6)

A rectangular parallelepiped base with a rail mounted on the top and left and right cylinders connected to the left and right fixing plates on the inside thereof; A first moving plate fixed on the right fixing plate and sliding on a rail; A second moving plate fixed on the left fixing plate and slid over the rail and corresponding to the first moving plate; A first clamp fixed to the first moving plate and fixing an elbow pipe; A second clamp fixed to the second moving plate and fixing an elbow pipe; Plastic elbow pipe joining apparatus comprising a lifter for supporting a hot plate to move up and down between the first and second clamp. According to claim 1, The elevator is provided with a cylinder and a rod on the holder, the guide is coupled in the vertical direction on both sides of the holder, the guide is configured on the bottom of the rod, the planar heating element and the support provided on both sides of the holder Plastic elbow pipe joining device, characterized in that the hot plate including a protective sheet is mounted. According to claim 1, Plastic elbow pipe joining apparatus, characterized in that the position adjusting member for pressing and supporting the support coupled to the cradle at a predetermined pressure mounted on the cradle. According to claim 1, wherein the first and the second clamp is divided into an upper grip portion and a lower grip portion, respectively, the guide pin fixed to the upper grip portion is lifted through the bush fixed to the lower grip portion, the upper grip portion is The upper end is connected to the support arms of the first and second lift, the lower grip portion plastic elbow pipe joining device, characterized in that fixed to the first and second moving plate through the first and second seat. The plastic elbow pipe joining device according to claim 4, wherein a fixing protrusion protrudes in front of the upper holding portion and the lower holding portion, and the fixing protrusion is fixed by fastening a vise. The rack of claim 1, further comprising: a stopper disposed on the rear surface of the base to limit the horizontal movement of the first moving plate, a rotation shaft installed through the base and manually moving the second moving plate, and a rack formed on the second moving plate. And a pinion which is engaged with the pinion is fixed to the rotating shaft, and a sensor for detecting movement of the first fixing plate and the second fixing plate is mounted.

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