KR20030011493A - A seal up pad's extending apparatus for the pipe connecting - Google Patents

Abstract

PURPOSE: A device for elongating a pipe connecting sealing pad controlling elongation rate is provided to manufacture the sealing pad with different elongation rate according to the diameter of a pipe and water pressure by controlling the elongation rate according to use. CONSTITUTION: Elongation rollers(30,32-37) are arranged along a direction which a sealing pad(2) passes, and have each different diameter. A driving unit(41-44) is installed at one side of the elongation roller, and drives the elongation roller at each different rotary speed. An elongation rate control unit is connected to the elongation roller, and controls the rotary speed and the elongation rate of the sealing pad(2). A heating unit is installed at the other side of the elongation roller, and heats the elongation roller.

Description

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 joint through which a fluid or an electric wire passes, and more particularly, by adjusting the elongation of the sealing pad, which can be applied according to a change in pipe diameter, shape, and pressure resistance. The present invention relates to a sealing pad drawing device for pipe connection, in which elongation can be adjusted.

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.

The sealing pad is disposed between the first film layer having an adhesive layer formed to adhere to the joint of the tube, the second film layer bonded to the first film layer and forming an outer surface, and between the first film layer and the second rubber layer. It is composed of a layer of fabric where shrinkage occurs when heat is applied.

In other words, when the heat recoverable fabric stretched at a predetermined ratio is disposed between the first film layer and the second rubber layer, the heat shrinkable fabric shrinks when heat is applied using a clamp or the like to cover the pipe joint. The first film layer and the second film layer is shrunk to adhere 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.

In order to solve such a problem, a drawing apparatus has been developed in which a drawing pad is formed as a whole by stretching a sealing pad including a first film layer, a second film layer, and a fabric layer, so that a drawing action is performed when the pipe is jointed.

However, in the drawing apparatus, since the elongation of the sealing pad is fixed, only a sealing pad having one elongation from one system can be manufactured, and thus a problem cannot be actively handled depending on the diameter and shape of the pipe. do.

In addition, since the elongation is constant, it is impossible to use it at the site where the hydraulic pressure acts, which causes a problem that the use range is limited.

The present invention was created in order to solve the above problems, and an object of the present invention is to enable the elongation of the sealing pad to be adjusted according to the intended use, thereby sealing each having a different elongation depending on the diameter of the tube and the degree of hydraulic pressure. The present invention provides a sealing pad drawing device for pipe joints capable of controlling elongation, which can manufacture a pad, thereby extending a range of use thereof.

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

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

3 is a configuration diagram showing a driving unit of the stretching apparatus according to the present invention,

4 is a side view showing the elongation variable means of the stretching apparatus according to the present invention,

5 is a configuration diagram showing a cooling apparatus of the stretching apparatus according to the present invention.

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

2: sealing pad 10: first film layer

2: second film layer 14: fabric layer

30,32,33,34,35,36,37: stretching roller

31: variable roller

41,42,43,44,45,46,47: Drive gear

60: variable gear 62: control motor

70: control panel

The sealing pad stretching device for pipe connection according to the present invention for realizing the above problems is provided in a plurality of stretching rollers in the longitudinal direction through which the sealing pads pass, and are provided on one side of the stretching roller and different diameters thereof. A driving unit for driving the rotational speed of each of the stretching rollers differently, an elongation adjusting means connected to any one of the plurality of stretching rollers, and adjusting the elongation of the sealing pad passing by adjusting the rotational speed of the stretching roller; It is installed on the other side of the roller is characterized in that it comprises a heating device for heating the stretching roller by introducing the heat medium into the respective stretching roller.

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

1 is a configuration diagram of a sealing pad stretching device for pipe connection according to the present invention, Figure 2 is a cross-sectional view of the sealing pad for pipe connection according to the present invention.

The sealing pad manufacturing apparatus for pipe connection of the present invention includes a loading step in which a sealing pad 2 made of three layers is wound on a roller, and an extension in which the sealing pad is stretched through a plurality of rollers from the loading step. And an adhesive layer coating step of applying an adhesive layer to one surface of the sealing pad that has been elongated in the stretching step, and a winding-up step in which the sealing pad coated with the adhesive layer is commercialized and wound.

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 formed of a heat recoverable material that is maintained in the stretched state at a constant ratio while passing through the stretched portion, and then shrinks to its original state when heat is applied thereto. , The fabric layer 14 is also made of heat recoverable fibers that are restored to their original state upon application of heat in the stretched state.

In the stretching process, a plurality of stretching apparatuses for stretching the sealing pads are rotatably arranged on both sides of the main body, and stretching rollers 30, 31, 32, 33, 34, 35, 36, 37 are used to stretch the sealing pads 2. And a driving part installed at one side of the drawing roller to drive the rotation speed of each drawing roller differently, and a sealing pad connected to any one of the plurality of drawing rollers to adjust the rotation speed of the drawing roller. (2) an elongation control means for adjusting the elongation rate, a heating device installed on the other side of the elongation rollers, for heating the elongation rollers by introducing a heat medium into each elongation roller, and supplying cooling water to some of the elongation rollers. It consists of a cooling device which cools the stretched sealing pad 2.

First guide rollers 41 and 42 for guiding the sealing pad 2 to the stretching roller side are mounted on the front side of the stretching roller, and a second guide for guiding the sealing pad 2 that has been completed to the adhesive layer coating process is provided on the rear side. The rollers 43 and 44 are mounted.

As shown in FIG. 3, the drawing rollers 30, 31, 32, 33, 34, 35, 36 and 37 are arranged in the longitudinal direction on the upper side of the main body 20 and have four different diameters. The upper rollers 30, 32, 34, 36 and four lower rollers 31, 33, 35, 37 which are arranged in the lower side of the main body and alternately with the upper rollers, and have different diameters. One side is connected to the driving unit and the other side is connected to the heating device or the cooling device. In addition, any one of the rollers 8 of the eight stretching rollers is connected to the elongation adjusting means, the rotational speed thereof is variable.

As shown in FIG. 4, the drive unit includes a plurality of drive gears 41, 42, 43, 44, 45, 46, 47 having different diameters respectively mounted on the rotating shaft 28 of the stretching roller. It consists of a drive chain 48 wound between the gears, and a drive motor 50 connected to the drive chain 48 to drive the drive chain.

That is, the drive gears 41, 42, 43, 44, 45, 46, 47 are composed of a plurality of gears fixed to the rotational shafts of the stretching roller, respectively, and are wound by one drive chain 48 to form the drive motor 50. It is rotated by the driving force. 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 elongation adjusting means includes a variable roller 60 not wound around the drive chain 48 of the driving unit among the stretching rollers, and a drive wound by the variable roller 60 and the belt 66. It consists of the side roller 64, the control motor 62 connected with this drive side roller 64, and the control panel 70 which controls the rotation speed of the said control motor.

When the user adjusts the elongation to the desired elongation in the control panel 70, the current supplied to the control motor 62 is variable so that the rotational speed of the control motor 62 is adjusted, and the rotation of the variable roller 60 is adjusted accordingly. The speed is variable to vary the elongation of the sealing pad 2.

As shown in FIG. 6, the heating device is connected to each of the drawing rollers, the supply pipes 76 and the return pipes 78, respectively, and a storage tank 82 in which the heating medium is stored and heated, and the storage tank 82. It consists of a drive pump 80 for forcibly circulating the heat medium stored in the. That is, the heat medium heated in the storage tank 82 is supplied to the stretching roller through the supply pipe 76, and the heat medium which has completed the heating action while circulating the chamber roller is returned to the storage tank 82 through the return pipe 78. do.

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 cooling water to the stretching roller.

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 system is driven with the sealing pad 2 wound around each roller, the sealing pad is moved between the rollers.

When the sealing pad 2 is guided to the stretching apparatus side through the first guide rollers 41 and 42, the diameter of the sealing pad 2 passes between the stretching rollers 30, 31, 32, 33, 34, 35, 36, 37 having different diameters. Stretching is performed in the longitudinal direction. That is, as the drive motor 50 is driven, each drive gear 41, 42, 43, 44, 45, 46, 47 connected to the drive chain 48 is rotated to drive a plurality of stretching rollers. At this time, since the diameter of the stretching roller is different from each other and the number of teeth of the drive gear is different from each other, the stretching of the sealing pad passing between the stretching roller is performed.

The sealing pad that has passed through the stretching apparatus is guided to the adhesive application process by the second guide roller.

If the elongation of the sealing pad is varied during this operation, the control speed of the control motor 62 is changed when the user controls the elongation desired by the control panel 70. Accordingly, the rotational speed of the variable roller 60 is changed so that the variable roller is changed. The elongation of the sealing pad 2 passing through 60 is variable.

Therefore, the sealing sheet stretching device for pipe connection adjustable elongation according to the present invention configured and acted as described above by connecting any one of the stretching rollers to a separate control motor and to allow the user to adjust to the desired elongation, Depending on the diameter and shape of the pipe, it is possible to use a sealing sheet having different elongation, so that the use range can be further expanded, and a sealing sheet having a different elongation of the sealing sheet can be used according to the change in the internal pressure passing through the inside of the pipe. There is an advantage that can improve the sealing performance.

Claims (2)

A plurality of stretching rollers disposed in a plurality of longitudinally extending sealing pads and having different diameters, a driving unit installed on one side of the stretching roller to drive rotational speeds of the stretching rollers differently, and the plurality of stretching Elongation adjusting means for controlling the elongation of the sealing pad connected to any one of the rollers by adjusting the rotational speed of the elongation roller, and is installed on the other side of the elongation roller to flow the heat medium into each elongation roller to draw the elongation roller Sealing pad stretching device for pipe connection capable of elongation control, characterized in that it comprises a heating device for heating. The method of claim 1, The elongation adjusting means comprises a variable roller whose rotation speed is variable by any one of the drawing rollers, a control motor connected by the variable roller and a belt, and a control panel which controls the rotation speed of the control motor. Sealing pad drawing device for pipe connection with elongation control.