KR20030011492A - A seal up pad's extending apparatus for the pipe connecting - Google Patents

Abstract

PURPOSE: A drawing machine of a sealing pad is provided to improve the sealing operation of a connected portion and to sufficiently endure the pressure of fluid to be passed through pipes by simultaneously shrinking first and second film layers when giving heat. CONSTITUTION: A loading portion(A) contains a sealing pad(2) to be rolled in a roller. A drawing portion(B) draws the sealing pad integrally by passing the sealing pad through many rollers. A spreading portion of a sticking layer spreads the sticking layer on the sealing pad. A winding portion winds the sealing pad. Thereby, the sealing efficiency and the drawing efficiency are improved.

Description

Sealing pad stretching device for pipe connection {A seal up pad's extending apparatus for the pipe connecting}

The present invention relates to a sealing pad manufacturing apparatus for sealingly sealing a pipe through which a fluid or an electric wire passes, and more particularly, to improve a sealing performance of a pipe joint and to provide a pipe joint by pressure of a fluid passing through the pipe. The present invention relates to a sealing pad drawing device for pipe connection which can prevent bursting.

In general, the sealing pad for pipe connection sealably connects the pipe joints through which pipes or wires pass, and prevents the fluid flowing into the pipes from leaking to the outside, or foreign substances and moisture from inside the pipes. This is to prevent the inflow into.

That is, the sealing pad is made of a heat-shrinkable material that is manufactured in a stretched state at a predetermined rate and then contracts when applied to heat, and then is wound around the pipe connecting part so as to be contracted by applying heat to seal the pipe joints. Perform the function.

In the conventional case, the sealing pad used for the pipe connection may include a first film layer having an adhesive layer formed on the joint of the pipe, a second film layer bonded to the first film layer and forming an outer surface, and the first film layer. It is composed of a shrinkable fabric layer which is disposed between the second film layer and applied heat to shrink.

That is, the shrinkable fabric shrinks when heat is applied in a state in which a heat recoverable fabric stretched by a predetermined ratio between the first film layer and the second film layer is connected by using a clamp or the like to cover the pipe joint. While shrinking the first film layer and the second film layer to be bonded to the pipe joint.

However, as described above, when sealing the pipe joint using a heat recoverable fabric, since the sealing pad is contracted only by the shrinkable fabric, the effective sealing of the pipe joint cannot be achieved and the shrinkable fabric is broken during the shrinkage. Is generated and the first and second film layers are blown out to generate water between the pipe joints or to cause foreign substances to flow into the pipe.

The present invention has been made to solve the above problems, and an object of the present invention is to produce not only shrinkable fabrics but also the first and second film layers simultaneously, so that the first and second film layers shrink simultaneously when heat is applied. It is possible to improve the airtight action of the pipe joint to be generated, and to provide a sealing pad stretching device for pipe connection to produce a sealing pad that can withstand the pressure of the fluid passing through the pipe.

1 and 2 is a block diagram of a sealing pad stretching device for pipe connection according to the invention,

3 is a cross-sectional view of a sealing pad for pipe connection according to the present invention,

Figure 4 is a side view of the drive unit of the sealing pad stretching device for pipe connection according to the present invention,

5 is a configuration diagram of a heating unit of a sealing pad drawing device for pipe connection according to the present invention.

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

2: sealing pad 4: pad roller

10: first film layer 12: second film layer

14: fabric layer 22, 24: stretching roller

30, 32: drive gear 34: drive chain

50: adhesive reservoir 52: application roller

60: vinyl 62: vinyl roller

Sealing pad stretching device for pipe connection according to the present invention for realizing the above object is a loading unit which is rotatably mounted pad roller is wound with a sealing pad made of three layers of two film layers and fabric layers, and the pad Arranged at the rear side of the roller and connected to each of the stretching rollers and a plurality of stretching rollers having different diameters so that the three layers of the sealing pads are stretched at a constant rate while passing through the sealing pads supplied from the pad rollers. A stretching portion comprising a driving portion for driving the rotational speed of the roller differently, an adhesive layer applying portion disposed at a rear side of the stretching roller and applying an adhesive layer to one surface of the sealing pad that has been stretched while passing through the stretching roller, and the application roller. It comprises a winding roller which winds up the sealing pad by which the adhesive layer application | coating was completed while passing.

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

1 and 2 is a block diagram of a sealing pad stretching device for pipe connection according to the present invention.

The sealing pad stretching device for pipe connection of the present invention includes a loading part A in which a sealing pad 2 made of three layers is wound around a roller, and a sealing pad 2 is formed from the loading part A. An adhesive layer coating portion for applying an adhesive layer to one side of the stretching portion (B) in which three layers of sealing pads are integrally drawn while passing through a plurality of rollers, and the sealing pad (2) in which the stretching portions (B) have been stretched. (C) and the winding-up part D in which the sealing pad 2 to which the said adhesive layer was apply | coated was finally wound up.

The sealing pad is a fabric layer disposed between the first film layer 10 and the second film layer 12 and the first film layer 10 and the second film layer 12, as shown in FIG. It is formed of (14), the first film layer 10 and the second film layer 12 is passed through the stretching portion (C) while maintaining a stretched state at a constant ratio, the heat recovery that is contracted to the original state when heat is applied It is formed of a material, the fabric layer 14 is also made of heat recoverable fibers that are restored to its original state when heat is applied in the stretched state.

The loading portion A may include a loading roller 4 rotatably disposed in a state in which the sealing pad 2 is wound, and guides the sealing pad 2 from the loading roller 4 to the stretching portion C. It consists of the first guide rollers 6 and 8.

The drawing unit C includes a plurality of drawing rollers 22 and 24 having different diameters through which the sealing pad 2 passes, and a driving unit for driving the rotational speeds of the drawing rollers 22 and 24 differently. A heating unit for heating the stretching rollers 22 and 24 by introducing a heat medium into the stretching rollers 22 and 24 and a cooling operation of the sealing pad 2 drawn by introducing cooling water into some of the stretching rollers. It consists of a cooling part.

The stretching rollers 22 and 24 are four first stretching roller portions 22 positioned at regular intervals on the upper side thereof, and second stretching rollers alternately disposed below the first stretching roller portion 22. It consists of a part (24). Since the drawing rollers are formed with different diameters and their rotational speeds are different, the sealing pad 2 passing through the drawing rollers 22 and 24 in a zigzag form has a drawing action due to the speed difference and the diameter difference of the rollers. Is performed.

Some of the stretching rollers are supplied with a heat medium so as to perform a heating action of the sealing pad during the stretching action, and the remaining coolant flows into the rest of the stretching roller to cool the completed sealing pad.

As shown in FIG. 4, the drive unit includes a plurality of drive gears 30 and 32 having different diameters respectively mounted on the rotary shafts 28 of the stretching rollers 22 and 24, and the drive gears 30 and. It consists of a drive chain 34 wound between 32 and a drive motor 36 connected to the drive chain 34 to drive the drive chain.

That is, the drive gears 30 and 32 are composed of a plurality of gears fixed to the rotary shafts 28 of the first and second stretching rollers 22 and 24, respectively, and are wound by one drive chain 34 to drive the motor ( By the driving force of 36). At this time, since the number of teeth of each drive gear is different, the rotation rate of a drawing roller changes.

As shown in FIG. 5, the heating unit is connected to each of the stretching rollers 22 and 24, the supply pipe 40, and the return pipe 42, respectively, and a storage tank 44 in which the heating medium is stored and heated. It consists of a drive pump 46 which forcibly circulates the heat medium stored in the tank 44. That is, the heat medium heated in the storage tank 44 is supplied to the stretching rollers 22 and 24 through the supply pipe 40, and the heat medium which completed the heating action while circulating the cooling rollers 22 and 24 returns the return pipe 42 Is returned to the storage tank 44.

The cooling unit is a device for supplying cooling water to the stretching roller and the roller side requiring each cooling, and a water-cooling type is used in which the cooling water is supplied by supplying the cooling water to the stretching roller.

The adhesive layer coating part is a step of applying the adhesive 20 to one surface of the sealing pad 2 stretched at a constant rate while passing through the stretching part C. A second guide for guiding the sealing pad passing the stretching part to the adhesive layer applying part. Rollers 54 and 56, an adhesive reservoir 50 in which the adhesive 20 is stored, an application roller 52 rotatably mounted in the state inserted into the adhesive reservoir 50, and the application roller 52 And a guide roller 58 for guiding the sealing pad 2 therebetween in contact with it, and a vinyl 60 for protecting the adhesive layer of the sealing pad 2 having the adhesive layer coated therethrough. It consists of the vinyl roller 62 which covers the adhesive layer 20 with etc.

Then, one side of the adhesive reservoir (50) is provided with a cutter (80) for cutting the adhesive to the coating roller 52 to a certain thickness so that the adhesive is uniformly applied to the sealing pad.

The coating part is coated with the adhesive layer 20 on one surface thereof while the sealing pad 2, which has been elongated, passes between the guide roller 58 and the application roller 52, and vinyl is adhered to the adhesive layer 20 from the vinyl roller 62. To protect the adhesive layer.

The winding section comprises a winding roller 82 for winding the sealing sheet 2 on which the stretching and adhesive layer application is completed, and a plurality of guide rollers 84, 86, 88, 90 for guiding the sealing sheet from the adhesive layer application section to the winding section. do.

The operation of the sealing sheet stretching device for pipe connection according to the present invention made as described above will be described below.

When the sealing sheet 2 wound around the pad roller 4 is connected between the rollers, the sealing sheet is moved from the loading portion A to the stretching portion B through the first guide roller.

At this time, each of the stretching rollers 22 and 24 is rotated while the driving motor 36 is driven. That is, when the driving motor 36 is driven, a plurality of driving gears 30 and 32 connected by the driving motor 36 and the driving belt 34 are rotated, and at this time, the driving gears 30 and 32 are connected to each of the driving gears 30 and 32. The extending | stretching rollers 22 and 24 rotate and extend the sealing sheet 2 which passes through at a fixed ratio.

That is, the number of teeth of each of the drive gears 30 and 32 and the diameter of each of the stretching rollers 22 and 24 are formed differently, so that the rotation speed of each of the stretching rollers 22 and 24 is different to the other rotation speed between one side and the other stretching roller. The drawing is performed while the sealing sheet passing therebetween is pulled in the moving direction.

Here, the whole drawing of the sealing sheet 2 which consists of three layers of the 1st film layer 10, the 2nd film layer 12, and the fabric layer 14 is performed.

At this time, the heating medium is supplied from the heating part to each of the stretching rollers 22 and 24 to heat the sealing sheet 2 so that the drawing is effectively performed, and the completed sealing sheet is supplied with cooling water from the cooling part to the roller side to seal the sheet. Carry out cooling.

In this way, the sealing sheet 2 which has been elongated while passing through the stretched portion is coated with a vinyl for protecting the adhesive while an adhesive is applied to one side while passing through the adhesive applying portion C. That is, the extending | stretching sealing sheet is guided to the application | coating roller 52 through the 2nd guide rollers 54 and 56, and the adhesive layer is apply | coated to one surface, passing through this application roller 52. As shown in FIG. The application roller 20 is rotated when its lower side is immersed in the adhesive reservoir 50, and the sealing sheet 2 in a state where the adhesive is constantly buried in the application roller so as to keep the adhesive layer constant on one side thereof. The cutter 80 cuts a certain amount or more of the adhesive 20 so that it can be applied to. The sealing sheet coated with the adhesive layer is attached to the adhesive layer of the sealing sheet while the vinyl supplied from the vinyl roller passes through the vinyl sticking roller to protect the adhesive layer.

In this manner, when the stretching of the sealing sheet and the application of the adhesive layer are completed, it is wound around the winding roller, and the stretching of the sealing sheet is completed.

Therefore, the sealing sheet stretching device for pipe connection according to the present invention constructed and operated as described above, the sealing sheet made of the first film layer, the second film layer and the fabric layer is passed through the stretching roller to the three layers of the sealing sheet By being stretched as a whole, when heat is applied to the pipe joint, the three-layered sealing sheet performs shrinkage as a whole, thereby improving sealing performance and preventing bursting of the sealing sheet due to application of heat. Since the sealing sheet is uniformly stretched, it is possible to more effectively cope with the internal pressure passing through the tube as well as to improve the stretching performance, thereby providing a wider range of use.

Claims (5)

A loading section on which a pad roller wound around a sealing pad made of two layers of film and a fabric layer is rotatably mounted, and a sealing pad disposed at a rear side of the pad roller and supplied from the pad roller passes through A stretching portion comprising a plurality of stretching rollers having different diameters so that the sealing pads of the layers are stretched at a constant rate, and a driving portion connected to each of the stretching rollers to drive the rotational speed of each stretching roller differently; and the rear of the stretching roller. An adhesive layer coating portion disposed on a side and applying an adhesive layer to one surface of the sealing pad where the stretching is completed while passing through the stretching roller, and a winding roller winding the sealing pad on which the adhesive layer is applied while passing through the coating roller. Sealing pad drawing device for pipe connection. The method of claim 1, The stretching roller is composed of a first stretching roller portion disposed at regular intervals above the sealing pad so as to pass through the jig zag, and a second stretching roller portion alternately disposed below the first stretching roller portion, the diameters of which are respectively different. Sealing pad stretching device for pipe connection, characterized in that formed differently. The method according to claim 1 or 2, The drawing roller is connected to the heating unit for supplying the heated heat medium and the sealing pad for pipe connection, characterized in that it is formed to heat the sealing pad through which the heat medium is circulated therethrough by the supply pipe and the return pipe. Drawing device. The method of claim 1, The drive unit includes a plurality of drive gears having different diameters respectively mounted on one side of the rotation shaft of the drawing roller, a drive chain wound between the drive gears, and a drive motor connected to the drive chain to drive the drive chain. Sealing pad stretching device for pipe connection, characterized in that made. The method of claim 1, The adhesive layer applicator comprises: an adhesive reservoir for storing adhesive, an application roller rotatably mounted in the adhesive reservoir, a guide roller for contacting the application roller and guiding a sealing pad therebetween, and the application roller. Sealing pad stretching device for pipe connection, characterized in that consisting of a vinyl roller to cover the adhesive layer of the vinyl to protect the adhesive layer of the sealing pad coated with the adhesive layer through the.