KR100870309B1 - Shrink device of heat shrinkable tube - Google Patents

Abstract

The present invention discloses a contraction apparatus for a heat shrink tube. Heat shrink tube shrinkage device according to the present invention, the shrinkage device body is provided with a passage through which the heat shrink tube can pass and the radiation heat radiating space therein; Heating means installed inside the contraction apparatus body to radiate radiant heat to a heat shrink tube moving through the passage; And a transfer belt unit provided on both sides of the contraction apparatus body to enter the heat shrink tube into the contraction apparatus body and continuously discharge it to the outside.

According to the present invention, the deformation and temperature control of the shrinkage device can be made according to the type and length of the various heat shrinkable tubes, thereby allowing flexibility of the shrinking operation. In addition, the heat shrink tube heat shrink process is automatic to reduce labor and reduce the risk of personal injury and to perform fast and reliable work.

Heat Shrink Tubing, Shrinkage Devices, Parabolas, Infrared Lamps

Description

Shrink device of heat shrinkable tube

The following drawings attached to this specification are illustrative of preferred embodiments of the present invention, and together with the detailed description of the invention to serve to further understand the technical spirit of the present invention, the present invention is a matter described in such drawings It should not be construed as limited to.

1 is a view for explaining the shrinkage process of a conventional heat shrink tube.

Figure 2 is a perspective view showing a heat shrink tube shrinkage device according to a preferred embodiment of the present invention.

3 is a cross-sectional view of the left body in order to explain the parabolic shape of the shrinkage device body shown in FIG.

4 is a left side view illustrating a state in which a heat shrink tube is inserted into the heat shrink tube shrink device shown in FIG. 2.

FIG. 5 is a plan view illustrating the spacing adjustment of the heat shrink tube shrinkage device illustrated in FIG. 2.

FIG. 6 is a front view illustrating the length adjustment of the heat shrink tube shrinkage device shown in FIG. 2.

<Description of main reference numerals in the drawings>

100: heat shrink tube shrinkage device 1: heat shrink tube

10 shrinkage body 11 heat shrink tube passage

12: shrinkage device connection portion 13: coolant passage

20: infrared lamp 30: reflector

40: transfer belt unit 41: belt pulley

42: conveying belt

The present invention relates to a heat shrink tube shrinkage apparatus, and more particularly, to a heat shrink tube shrinkage apparatus capable of uniformly shrinking by heating the heat shrink tube to a uniform temperature.

The heat shrink tube is a product using a memory effect of a cross-linked polymer, and is made of a polymer synthetic resin that shrinks to a diameter before expansion when heat is applied.

In order to manufacture a heat shrink tube, first, a compound of a pellet form mixed with a synthetic resin raw material is mixed into an extruder and melted, and then extruded into a circular tube shape. Then, the hot electrons are accelerated and injected into the inside of the round tube, and radicals of the polymer chain are generated in the polymer constituting the tube, and then crosslinked to generate a memory to remember the shape. The circular tube whose shape is memorized is heated to a temperature sufficient to expand again, and then expanded to a tube of the desired diameter by vacuum pressure and air pressure. This expanded tube is finally wound up to release the product.

The heat shrink tube manufactured according to the above is widely used as an exterior material for wires requiring insulation protection, wire core identification, and moisture permeation of various wires. In the case of heat shrink tubes used for waterproofing, an adhesive is added to the inside of the tube. It is applied so that the airtightness is more maintained by the adhesive when the tube shrinks.

Shrinkage of heat shrink tubing varies from product to product. Electric and dissipation tubes in the form of a single wall shrink from 50% to 75%, auto tubes shrink up to 23% and power distribution boards up to 60%. In addition, industrial tubes in the form of dual walls shrink up to 66% to 75% and power and communication tubes shrink up to 50%. As such, the shrinkage rate of the heat shrinkable tube varies depending on the size of the tube and the intended use, and thus the shrinkage method also varies from the use of a small heater to the use of a large heat gun.

1 is a view for explaining the shrinkage process of a conventional heat shrink tube.

As shown in FIG. 1, first, a table 4 having a heat gun 2 embedded therein capable of generating heat of about 400 ° C. to 600 ° C. is prepared. In addition, a Teflon jig 3 is provided around the heat gun 2. Subsequently, the heat shrink tube 1 into which the electric wire is inserted is positioned at a distance of about 50 mm from the end of the Teflon jig 3. Then, the operator grasps the heat shrink tube 1 and shrinks the heat shrink tube while moving in a constant direction while slowly rotating the high temperature heat generated from the heat gun 2 to uniformly heat the heat shrink tube.

However, the conventional heat shrink tube shrinkage process as described above is performed manually by the operator's manual process, so the process efficiency is low and the labor intensity of the operator is increased. In addition, since the operator's hand is near the high temperature heat source during the process, there is a high possibility of a safety accident such as a burn. In addition, operator error or lack of skill leads to eccentric shrinkage or poor adhesion of the heat shrink tube, which in turn leads to defective products.

Therefore, the present invention was made to solve the problems of the prior art as described above, in the process of heating and shrinking the heat shrink tube, can reduce the risk of labor burden and injury of the worker, fast and convenient and uniform heat shrink It is an object of the present invention to provide a heat shrink tube shrink device capable of heat shrinking a tube.

Heat shrink tube shrinkage device according to the present invention for achieving the above object, in the heat shrink tube shrinkage device for shrinking the heat shrink tube, the shrinkage is provided with a passage through which the heat shrink tube can pass and the radiation heat radiating space therein Device body; Heating means installed inside the contraction apparatus body to radiate radiant heat to a heat shrink tube moving through the passage; And a transfer belt unit provided on both sides of the contraction apparatus body to enter the heat shrink tube into the contraction apparatus body and continuously discharge it to the outside.

Preferably, the inner cross-sectional shape of the shrinkage device body has a parabolic shape satisfying the following equation with respect to the position of the heating means.

Equation

(In the formula, y: the y-axis coordinate value of the parabola, x: the x-axis coordinate value of the parabola, p: the x-axis coordinate value of the heating means, which corresponds to the focal point of the parabola.)

Preferably, the shrinkage device body is comprised of first and second shrinkage device bodies, and each of the first and second shrinkage device bodies is symmetric to each other.

Preferably the heating means is an infrared lamp and is located at the focal point of the parabola.

Preferably, the first and second shrinkage device bodies are constructed by assembling a plurality of shrinkage device bodies having the same shape along the central axis direction of the shrinkage device body so as to correspond to the length of the heat shrinkable tube.

In the present invention, the coolant passages through which the coolant flows are provided in the first and second shrinkage body bodies.

In the present invention, the first and the second shrinkage device body has a reflecting plate made of an aluminum material polished on the inner side.

In the present invention, the heating means is adjusted the intensity of radiant heat radiated according to the size and working speed of the heat shrink tube.

In the present invention, the conveying belt unit is a belt pulley provided on the inlet side and the outlet side of the shrinkage device body; And a conveyance belt coupled to the inlet and outlet side belt pulley outer circumferential surfaces.

In the present invention, the belt pulley further comprises a conveying belt rotating means for rotating in a predetermined direction.

Preferably, the conveying belt unit is adjusted a distance between the shrinkage device body and the conveying belt unit to correspond to the length of the heat shrink tube.

Preferably, the transfer belt unit is adjusted to the interval between the transfer belt unit to correspond to the diameter of the heat shrink tube.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms or words used in the specification and claims should not be construed as having a conventional or dictionary meaning, and the inventors should properly explain the concept of terms in order to best explain their own invention. Based on the principle that can be defined, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention. Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

Figure 2 is a perspective view showing a heat shrink tube shrinkage device according to a preferred embodiment of the present invention, Figure 3 is a cross-sectional view of the left body to explain the parabolic shape of the shrinkage device body shown in FIG.

Referring to FIG. 2, the heat shrink tube shrinkage device 100 according to the present invention has a heat shrink tube passage 11 through which a radiant heat radiating space for heating the heat shrink tube 1 is provided and through which the heat shrink tube 1 can pass. ) Is provided with a shrinkage device body (10), a heating means (20) installed inside the shrinkage device body (10) to radiate radiant heat, and a reflecting plate (30) formed on the inner surface of the shrinkage device body (10); It includes a conveying belt unit 40 which is provided in pairs on both sides of the shrinkage device body (10).

As shown in FIG. 2, the shrinkage device body 10 consists of first and second shrinkage device bodies 10a, 10b. Inside the first and second shrinkage device bodies 10a and 10b, a radiant heat radiating space for heating the heat shrink tube 1 is provided and a heat shrink tube passage 11 through which the heat shrink tube 1 can pass. . In addition, as shown in Figure 3, the inner cross-sectional shape of the first shrinkage device body (10a) located on the left side has a parabolic shape that satisfies the following equation 1 with respect to the position of the heating means 20.

(In the formula, y: the y-axis coordinate value of the parabola, x: the x-axis coordinate value of the parabola, p: the x-axis coordinate value of the heating means, which corresponds to the focal point of the parabola.)

Similarly, it is apparent that the second shrinkage device body 10b positioned on the right side also has a parabolic shape satisfying the above expression (1).

The first and second shrinkage device bodies 10a and 10b may be spaced apart from each other at intervals corresponding to the widths of the heat shrinkable tube passages 11 and arranged to face each other. In addition, the first and second shrinkage device bodies 10a and 10b may be configured as a single body, and may be configured by assembling a plurality of bodies having the same shape along the central axis direction of the shrinkage device body 10. It may be. When configuring the shrinkage device body 10 as in the latter there is an advantage that can flexibly cope with the length of the heat shrink tube (1).

The heating means 20 radiates radiant heat to create a high temperature atmosphere inside the shrinkage device body 10. Specifically, as shown in FIG. 3, the heating means 20 is located at both sides (focal point of the parabola) of the contraction apparatus body 10 that satisfies Equation 1 with respect to the inner cross-sectional shape of the contraction apparatus body 10. Each is installed. Radiant heat radiated from the heating means 20 is preferably able to be adjusted according to the specifications and working speed of the heat shrink tube (1). For example, the heating means 20 may be an infrared lamp which emits infrared rays which can generate radiant heat. However, the present invention is not limited by the kind of the heating means 20.

The reflective plate 30 is formed in the form of a thin film by polishing the aluminum material on the inner surface of the shrinkage device body 10. The reflecting plate 30 is formed to coincide with the parabolic shape of the shrinkage device body 10. This reflector 30 allows the radiant heat radiated from the heating means 20 to be radiated vertically and uniformly on the passage path of the heat shrink tube 1 passing through the shrinkage device body 10.

In addition, the shrinkage device body 10 is preferably provided with a cooling water passage 13 through which cooling water flows in order to prevent damage to the shrinkage device body 10 by radiant heat of the heating means 20.

The transfer belt unit 40 is provided in pairs on both sides of the shrinkage device body. The conveying belt unit 40 includes a belt pulley 41 provided at the inlet side and the outlet side of the heat shrink tube passage 11. The conveyance belt 42 is coupled to the outer circumferential surface of the belt pulley 41. Therefore, when the belt pulley 41 is rotated in a predetermined direction, the acyclic orbital movement of the transfer belt 42 becomes possible. In addition, any one of the belt pulley 41 on the inlet or outlet side is coupled to a servo motor (not shown) to rotate the conveyance belt 40 in a constant direction. Since the conveying belt unit 40 is installed in pairs on both sides of the shrinking device body, when the heat shrinking tube 1 is introduced into one side of the conveying belt unit 40 during the heat shrinking tube shrinking process, the heat shrinking tube 1 becomes the shrinking device body. After the inside of the (10) at a constant speed is contracted by the radiant heat radiated from the heating means 20 is to be discharged to the other side of the conveying belt unit 40.

4 is a left side view illustrating a state in which a heat shrink tube is inserted into the heat shrink tube shrink device shown in FIG. 2.

Referring to Figure 4 describes the operation of the heat shrink tube shrinkage device 100 according to the present invention, the heat shrink tube passage 11 is provided in the heat shrink tube shrinkage device 100 by enclosing the heat shrink tube 1 in the conductor to be protected At the inlet side of the), a heat shrink tube (1) feeds the outer conductor. Then, the conductive wire in which the heat shrink tube 1 is wound is introduced into the inlet side of the transfer belt unit 40 provided on both sides of the heat shrink tube passage 11 and along the conveying belt 42 driven by the rotational force of the belt pulley 41. Proceeds inside the shrinkage device body 10. The heating means 20 then radiates radiant heat to the heat shrink tube 1. At this time, the radiant heat radiated from the heating means 20 is reflected by the parabolic reflector 30 and is radiated to the heat shrink tube 1 perpendicular to the passage path of the heat shrink tube 1. Therefore, radiant heat is uniformly radiated to the heat shrink tube 1. When the radiant heat radiated from the heating means 20 is uniformly radiated to the heat shrink tube 1, the heat shrink tube 1 is heated by radiant heat to achieve uniform shrinkage. After the heat shrink tube 1 is uniformly contracted while passing through the inside of the shrinkage device body 10, the conductive wire in which the heat shrink tube 1 is wound is discharged to the outlet side of the transfer belt unit 40. As a result, the shrinkage process of the heat shrink tube 1 is completed, and the above-described shrinkage process may be repeatedly performed when the heat shrink tube 1 is covered with a plurality of conductive wires.

FIG. 5 is a plan view illustrating the spacing adjustment of the heat shrink tube shrink device shown in FIG. 2, and FIG. 6 is a front view illustrating the length adjustment of the heat shrink tube shrink device shown in FIG. 2.

As shown in FIG. 5, the shrinkage device body 10 and the conveying belt unit 40 are adapted to correspond to the diameter of the heat shrinkage tube 1 which depends on the specification of the heat shrinkage tube 1 to be shrunk. It is possible to adjust the interval between the interval of (10) and the conveyance belt unit 40.

As shown in FIG. 6, the shrinkage device body 10 and the conveyance belt unit 40 may have a length or a conveyance belt of the shrinkage device body 10 so as to correspond to a length that depends on the heat shrink tube 1 to be shrunk. The distance between the unit 40 and the shrinkage device body 10 can be adjusted. Here, the length adjustment of the shrinkage device body 10 is to separate the shrinkage device body connecting portion 12, to assemble a body having the same shape along the direction of the central axis of the shrinkage device body 10 and the heating means of the length corresponding thereto ( 20) and adjust it.

Although the present invention has been described above by means of limited embodiments and drawings, the present invention is not limited thereto and will be described below by the person skilled in the art to which the present invention pertains. Of course, various modifications and variations are possible within the scope of the claims.

According to the present invention, the deformation and temperature control of the shrinkage device can be made according to the type and length of the various heat shrinkable tubes, thereby allowing flexibility of the shrinking operation. In addition, the heat shrink tube heat shrink process is automatic to reduce labor and reduce the risk of personal injury and to perform fast and reliable work.

Claims (14)

A heat shrink tube shrink device for shrinking a heat shrink tube, A shrinkage device body having a passage through which the heat shrink tube can pass and having a radiant heat radiating space therein; Heating means installed inside the contraction apparatus body to radiate radiant heat to a heat shrink tube moving through the passage; And A pair of transfer belt units provided on both sides of the contraction apparatus body to enter the heat shrink tube into the contraction apparatus body and continuously discharge the heat shrink tube to the outside; The inner cross-sectional shape of the shrinkage device body is made of a parabolic shape that satisfies the following equation for the position of the heating means. Equation

(In the formula, y: the y-axis coordinate value of the parabola, x: the x-axis coordinate value of the parabola, p: the x-axis coordinate value of the heating means, which corresponds to the focal point of the parabola.) delete The method of claim 1, And the shrinkage device body comprises a first and a second shrinkage device body, wherein each of the first and second shrinkage device bodies is symmetric with each other. The method of claim 1, And the heating means is an infrared lamp. The method of claim 1, And the heating means is located at the focal point of the parabolic line. The method of claim 3, The first and second shrinkage device body is a heat shrink tube shrinkage device characterized in that the assembly of a plurality of shrinkage device body having the same shape to correspond to the length of the heat shrink tube along the direction of the center axis of the shrinkage device body. The method of claim 3, And the first and second shrinkage device bodies are spaced apart from each other to correspond to the diameter of the heat shrink tube so that the width of the heat shrink tube moving passage is adjusted. The method of claim 3, The first and second shrinkage body body is a heat shrink tube shrinkage device characterized in that the cooling water passages through which the coolant flows. The method of claim 3, The first and second shrinkage device body has a heat shrink tube shrinkage device characterized in that it has a reflecting plate made of an aluminum material polished on the inner side. The method of claim 1, The heating means is a heat shrink tube shrinkage device, characterized in that the intensity of radiant heat radiated according to the size and working speed of the heat shrink tube. The method of claim 1, The conveying belt unit, A belt pulley provided at an inlet side and an outlet side of the shrinkage device body; And And a conveyance belt coupled to the inlet and outlet side belt pulley outer circumferential surfaces. The method of claim 11, Heat shrink tube shrinkage device further comprises a conveying belt rotating means for rotating the belt pulley in a predetermined direction. The method of claim 1, The transfer belt unit is a heat shrink tube shrink device, characterized in that the gap between the shrinkage device body and the transfer belt unit is adjusted to correspond to the length of the heat shrink tube. The method of claim 1, The transfer belt unit is a heat shrink tube shrinkage device, characterized in that the gap between the transfer belt unit is adjusted to correspond to the diameter of the heat shrink tube.

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