KR20110005924A - Manufacturing device for heat-shrinkable cap and manufacturing method for heat-shrinkable cap - Google Patents

Abstract

PURPOSE: A device and a method for manufacturing heat-shrinkable cap are provided to rapidly manufacturing a thermal contraction cap in automated or semi-automated process. CONSTITUTION: A sealing rod mounting groove(51) is formed in the upper side of the tube support pillar(50). A heating die(60) includes a tube heating part(61). The lower part of the tube heating portion is opened. The top part of the tube heating portion is concave corn-type. The tube heating portion heats the top end portion of a thermal contraction tube. A heating die is placed at the upper area of the tube supporting pillar. A moving unit moves one of the tube support pillar or upper heating die to upward and downward directions.

Description

Heat shrink cap manufacturing apparatus and manufacturing method for wire joint protection {MANUFACTURING DEVICE FOR HEAT-SHRINKABLE CAP AND MANUFACTURING METHOD FOR HEAT-SHRINKABLE CAP}

The present invention relates to an apparatus and a manufacturing method for a heat shrink cap for protecting a wire joint.

The heat shrink cap for protecting wire joints is used to protect a contact portion where several strands of wires are contacted to expose an internal line (copper wire, etc.).

In this regard, the Korean Utility Model Model No. 20-0390353 proposed by the present applicant has been proposed to "constriction cap for protecting wire joints," and the prior art is considered to be incorporated herein.

The prior art relates to a shrinkage cap for protecting a wire joint having a closed end formed by an airtight seal ball that is thermally bonded to a thermoplastic adhesive to one side of a cap having a space.

In order to manufacture the above-mentioned contraction cap for protecting the wire joint, a ball having a diameter smaller than the diameter of the cap is inserted into the contracted inner diameter while the inner diameter of the cap is contracted by applying heat to one side of the cap. Heat is used to join the cap and the ball.

However, there is a problem that it is difficult to automate the production of the heat shrink cap when manufacturing the heat shrink cap using the airtight seal ball as described above.

That is, the process itself of coupling the cap with the ball while heat shrinking one side of the cap first, then enclosing the airtight ball, and then heat shrinking the secondary again is difficult to automate the manufacturing process.

In addition, when the airtight ball is to be inserted into the primary heat-shrinkable cap, it is not easy to place the airtight ball in the correct position, and thus the quality of the product varies according to the worker.

In addition, in the conventional technology, a part of the airtight ball is exposed to one side of the cap, and since only the side of the airtight ball is joined to the cap, the joining performance is lowered, thereby lowering the airtight performance, and the protrusion of the airtight ball. Because of that, the aesthetic gives a coarse feeling.

The present invention has been made to solve the above problems of the prior art, it is possible to manufacture a heat shrink cap in a fast working time by an automated process, it is easy to maintain a constant quality standards, The present invention proposes a device and a method for manufacturing a new type of heat shrink cap for protecting wire joints to ensure a tight airtightness.

In order to solve the above problems, the present invention, the tube support pillar is formed vertically arranged in the upper side toward the bottom is formed airtight rod; A heating die provided with a tube heating part having a conical shape formed in a concave shape at the bottom thereof to open an upper end of the heat shrink tube mounted on the tube support column, and a heating die positioned on the tube support column; Moving means for moving one of the tube support pillar and the heating die in an up-down direction with respect to the other; And a control unit.

In the above, the lower end of the tube support pillar is a horizontal column support plate fixedly coupled; A tube support plate formed with a through hole through which the tube support column penetrates and is provided horizontally on the pillar support plate; Tube support plate moving means provided on the column support plate to move the tube support plate up and down; It further comprises, wherein the moving means is preferably a heating die moving means for moving the heating die.

In the above, it is preferable that a plurality of tube support pillars are arranged side by side on the column support plate, and a plurality of tube heating units are provided side by side on the heating die.

According to another aspect of the present invention, the lower end of the rod-shaped airtight rod is mounted in an airtight rod mounting groove formed on an upper surface of the vertically arranged tube support column, and the tube support column is disposed in the hollow of the heat shrink tube coated with a thermoplastic adhesive on an inner circumferential surface thereof. A component mounting step of placing the heat shrink tube on the tube support column such that the heat shrink tube is positioned so that an upper end of the heat shrink tube is positioned higher than an upper end of the tube support column; The upper end of the heat-shrinkable tube is heated by using a tube heating part having a concave shape formed to be concave upward. A closed end forming step of forming a; Characterized in that comprises a.

In the above, the upper end of the heat shrink tube in the component mounting step is preferably mounted to be located higher than the upper end of the airtight rod.

The method of claim 1, wherein the capping step of moving the heat shrink tube formed with the closed end to the upper side to be separated from the tube support pillar and thereby the airtight rod is separated from the air seal mounting groove; It is preferable to further include.

As described above, the present invention can produce a heat-shrink cap in a fast working time by an automated or semi-automated process, it is easy to maintain a constant quality standards, a new that can ensure a certain air tightness of the closed end Provided are an apparatus and a method for manufacturing a heat shrink cap for protecting a wire joint of the type.

Hereinafter, the specific configuration and operation will be described based on the embodiment according to the present invention.

1 is a conceptual diagram of an apparatus for manufacturing a heat shrink cap according to the present invention, Figures 2 to 10 are views showing the operation sequence of the apparatus of Figure 1 in order, Figure 11 is a wire joint manufactured by Figure 1 It is a perspective view, a front view, and sectional drawing of a protective heat shrink cap, and FIG. 12 is a real photograph of FIG.

In the heat shrink cap manufacturing apparatus, a moving support die 10, a pillar support plate moving means (not shown), a heating die 60, and the like are provided on a main body (not shown), and a pillar support plate is provided on the moving support die 10. 20, the tube support plate 30, the tube support plate moving means 40, the tube support column 50, etc. are provided.

The movement supporting die 10 is arranged horizontally, and a horizontal columnar support plate 20 is provided on the upper surface thereof so as to be movable linearly along the movement supporting die 10. As such, the configuration for guiding the linear movement is omitted since various means are widely used. A pillar support plate moving means (not shown) for sliding the pillar support plate 20 with respect to the movable support die 10 is provided. The pillar support plate moving means includes a hydraulic or pneumatic cylinder, or a rotational motion of a motor and a motor. A device for converting into linear motion or the like can be used.

In this way, the column support plate 20 is movable along the die 10 for moving support linearly.

The lower end of the tube support column 50 is fixedly coupled to the upper portion of the column support plate 20.

In this embodiment, a plurality of tube support pillars 50 are arranged side by side on one pillar support plate 20. This is to increase productivity.

Each tube support column 50 is disposed vertically, the lower end is fixedly coupled to the column support plate 20, and an airtight rod mounting groove 51 is formed on the upper side toward the bottom.

In addition, the tube support plate 30 is provided horizontally on the column support plate 20.

The tube support plate 30 is formed with a plurality of through holes 31 through which the tube support pillars 50 pass. Of course, the arrangement of the plurality of through holes 31 is the same as that of the tube support pillar 50.

In addition, the column support plate 20 is provided with a pneumatic cylinder 40 as the tube support plate moving means, the tube support plate 30 is fixed to the piston of the pneumatic cylinder 40.

Therefore, when the piston moves up and down according to the driving of the pneumatic cylinder 40, the tube support plate 30 can be moved up and down by this.

On the other hand, the heating die 60 is provided above the moving support die 10, specifically, above the tube support pillar 50.

The heating die 60 is provided on the main body (not shown) so as to be movable up and down.

The heating die 60 is provided with a plurality of tube heating portions 61 having a cone shape formed concave upward. Of course, the lower part of the tube heating part 61 is open.

The arrangement form of the plurality of tube heating parts 61 is the same as that of the arrangement of the plurality of tube support pillars 50.

In addition, the heating die 60 is movable in the vertical direction by the heating die moving means (not shown).

The tube heating part 61 is for heating the upper end of the heat-shrink tube 110 mentioned later.

Since the tube heating part 61 is formed in a cone shape, the tube heating part 61 and the heat shrink tube 110 heat-shrinked by the lowering of the tube heating part 61 even during the process of thermal contraction of the heat shrink tube 110 to be described later, and The distance between the tube heating part 61 and the portion of the heat shrink tube 110 that is not heat contracted is maintained within a predetermined range so that the heat shrink tube 110 may be supplied with heat as a whole.

A process of manufacturing the heat shrink cap by the heat shrink cap manufacturing apparatus as described above will be described with reference to FIGS. 2 to 10.

As shown in FIG. 2, the pillar support plate 20 is moved to one side on the movement support die 10 so as not to be located directly under the heating die 60.

As such, since the pillar support plate 20 may be positioned away from the lower portion of the heating die 60, a safety accident may occur due to interference with the heating die 60 when the heat shrink tube 110 and the airtight rod 120 are mounted. The possibility is small, and the tube heating portion 61 can be located at a height adjacent to the tube support column 50, thereby shortening the distance to which the heating die 60 must be moved.

In this state, as illustrated in FIGS. 3 and 4, the heat shrink tube 110 and the airtight rod 120 are mounted to the tube support pillars 50, respectively.

The airtight rod 120 is formed in a rod shape, specifically, a rod shape having a circular cross section, and the lower end thereof is inserted into and installed in the airtight rod mounting groove 51 formed on the upper surface of the tube support pillar 50 (FIG. 3). In addition, the upper end is positioned to protrude to the top of the tube support pillar (50).

In addition, the heat shrink tube 110 is a hollow is formed along the longitudinal direction, the thermoplastic adhesive 111 is applied to the inner peripheral surface, the heat shrink tube 110 so that the tube support pillar 50 is inserted into the hollow of the heat shrink tube 110 To the tube support column 50 (see FIG. 4).

The heat shrink tube 110 is a material that can be insulated, and also shrinks when it receives external heat.

The heat shrink tube 110 mounted on the tube support pillar 50 is in a state in which both the upper end and the lower end form an open end.

The thermoplastic adhesive 111 applied to the heat shrink tube 110 maintains the coating state at room temperature and changes to a liquid state when it receives heat to perform an adhesive function.

When the heat shrink tube 110 is mounted on the tube support column 50, the lower end of the heat shrink tube 110 is in contact with the tube support plate 30.

In addition, the upper end of the heat shrink tube 110 is preferably positioned higher than the upper end of the tube support pillar 50, more preferably positioned higher than the upper end of the airtight rod 120 mounted in the airtight rod mounting groove (51). It is desirable to.

3 to 4, the mounting of the component is completed.

Of course, although FIG. 3 can be implemented after FIG. 4, it is easy to implement FIG. 4 after FIG. 3.

In this state, the pillar support plate 20 is moved directly below the heating die 60 by the pillar support plate moving means (not shown). The pillar support plate 20 is in a state capable of moving in a line along the die 10 for moving support, and a configuration capable of moving the pillar support plate 20 to a specific position by the pillar support plate moving unit (not shown) has already been described. It was.

By this movement, each tube support column 50 is disposed below the tube heating portion 61 of the heating die 60 (see FIG. 5).

In the state of FIG. 5, the heating die 60 moves downward as shown in FIG. 6 by a heating die moving means (not shown), whereby each tube heating portion 61 is provided with a respective tube support column 50. It is lowered while surrounding the upper part of).

At this time, the tube heating portion 61 descends toward the tube support pillar 50 and heats the upper end of the heat shrink tube 110 mounted on the tube support pillar 50, whereby the heat shrink tube 110 has a tube from the top thereof. First, the heat shrinkage is performed by the heating portion 61, and the thermoplastic adhesive 111 applied to the inner circumferential surface of the heat shrinkage tube 110 is brought into a liquid state by heating. As a result, the heat shrinkable cap 100 of FIG. Change to form.

That is, the heat shrink cap 100 illustrated in FIG. 6 is joined to the airtight rod 120 through the thermoplastic adhesive 111 in a state where the heat shrink tube 110 of the upper end thereof is heat shrinked to form a closed end.

As described above, since the tube heating part 61 is formed in a cone shape, the tube heating part 61 and the heat shrink tube 110 are heat-shrinked by the lowering of the tube heating part 61 even when the heat contraction tube 110 is thermally contracted. The distance between the portion and the tube heating portion 61 and the portion of the non-heat shrinkable heat shrink tube 110 is maintained within a predetermined range so that the heat shrink tube 110 may be supplied with heat as a whole.

In addition, even when the diameter of the heat shrink tube 110 is changed, since the tube heating part 61 is a cone shape, the tube heating part 61 may be used as it is for the heat shrink tube 110 having various diameters. Of course, the bottom end of the tube heating portion 61 should have a diameter larger than the maximum diameter of the applicable heat shrink tube 110.

On the other hand, the lower end of the heat shrink cap 100 is maintained in its hollow to maintain the open end.

When the process of forming the closed end is completed, as shown in FIG. 7, the heating die 60 moves upwards, and as shown in FIG. 8, the pillar support plate 20 moves to the position of FIG. 2.

In the process of FIGS. 7 to 8, the thermoplastic adhesive 110 is cooled and changed into a solid phase.

After the state of FIG. 8, when the pneumatic cylinder 40 operates as shown in FIG. 9, and the tube support plate 30 moves upward, the heat shrink cap 100 disposed on the upper portion of the tube support plate 30 is moved by the tube support plate 30. Departure from tube support column 50.

At this time, the airtight rod 120 bonded to the heat shrink cap 100 is separated from the airtight rod mounting groove 51.

After FIG. 9, a plurality of heat shrink caps 100 separated from the heat shrink cap manufacturing apparatus as shown in FIG. 10 may be obtained.

The structure of the heat shrink cap 100 obtained by such a manufacturing process will be described with reference to FIGS. 11 and 12.

As shown, the heat shrink cap 100 is formed by the heat shrink tube 110 and the airtight rod 120 to which the thermoplastic adhesive 111 is applied.

One end of the heat shrink cap 100 forms a closed end by the airtight rod 120 and the thermoplastic adhesive 111, and the other end (lower part in FIG. 11) of the heat shrink cap 100 forms an open end.

The airtight rod 120 has a rod shape and is provided in the hollow of the heat shrink tube 110 coaxially with the heat shrink tube 110 at one end of the heat shrink tube 110.

In addition, the longitudinal outer end of the airtight rod 120 is bonded to the heat shrink tube 110 through the thermoplastic adhesive 111 in the process of the one end of the heat shrink tube 110 is heat shrink.

However, since the longitudinally inner end portion (lower direction in FIG. 11) of the airtight rod 120 is a portion that was mounted in the airtight rod mounting groove 51 even during the heat shrinkage process of the heat shrink tube 110, the airtight rod 120 is spaced apart from the inner circumferential surface of the heat shrink tube 110. have.

In the heat shrinkable cap 100 manufactured in the process of FIGS. 2 to 10, the main surface of the longitudinally outer end of the hermetic rod 120 is bound to the thermoplastic adhesive 111.

In addition, the heat shrink cap 100 of the present embodiment has a structure surrounded by the thermoplastic adhesive 111a in the outward direction of the longitudinal outer end of the hermetic rod 120.

That is, as shown in FIG. 11, when one end of the heat shrink tube 110 protrudes in the longitudinal direction than the longitudinal outer end of the hermetic rod 120, the longitudinal outer side of the longitudinal outer end of the hermetic rod 120 is extended. It becomes the structure wrapped by the thermoplastic adhesive 111a.

The thermoplastic adhesive 111a is a portion formed while the thermoplastic adhesive 111 applied to the inner circumferential surface of the heat shrinkable tube 110 meets the airtight rod 120 while flowing into a liquid state and flows outward in the longitudinal direction.

In particular, if one end of the heat-shrink tube 110 protrudes from the hermetic rod 120 (L, FIG. 11) is 0.5 mm or more and 2 mm or less, it is formed in the longitudinally outer side of the longitudinal outer end of the hermetic rod 120. The thermoplastic adhesive 111a becomes a beautiful shape in which the outer side forms a hemispherical shape.

When the protruding length is 0.5 mm or less, the thermoplastic adhesive 111 a may not cover the entire outer end of the airtight rod 120, and when the protruding length is 2 mm or more, the thermoplastic adhesive 111 a flows to the outer circumferential surface of the heat shrink tube 110. It can overflow.

In this way, the thermoplastic adhesive 111 not only covers the main surface of the airtight rod 120, but also the airtight portion of the closed end of the heat shrink cap 100 when the thermoplastic adhesive 111a also covers the longitudinal direction of the airtight rod 120. Not only the performance is further improved, but also the heat shrink cap 100 which is excellent in design can be manufactured.

The heat shrink cap 100 manufactured as described above may protect the wire joint by inserting a wire joint or the like to be protected to the open end side and then heat shrinking the open end.

On the other hand, in the above embodiment has been described under the premise that some process, such as the mounting of the heat shrink tube 110 and the airtight rod 120 is made by an operator. However, it will be readily understood by those skilled in the art that the apparatus or method according to the present invention may be implemented as a fully automated system.

The above embodiments are only preferred embodiments of the present invention, and the technical idea of the present invention may be variously modified or adjusted by those skilled in the art. Such modifications and adjustments fall within the scope of the present invention if they use the technical idea of the present invention.

The present invention can be used to protect wire joints.

1 is a conceptual diagram of an apparatus for manufacturing a heat shrink cap according to the present invention,

2 to 10 show in sequence the operating sequence of the device of FIG. 1,

11 is a perspective view, a front view, a sectional view of a heat shrink cap for protecting a wire joint manufactured by FIG.

12 is a real picture of FIG.

<Description of Symbols for Main Parts of Drawings>

10: die for moving support 20: pillar support plate

30 tube support plate 31 through hole

40: pneumatic cylinder

50: tube support pillar 51: airtight rod mounting groove

60: heating die 61: tube heating part

100: heat shrink cap 110: heat shrink tube

120: airtight seal

Claims (6)

Tube support pillar is formed vertically arranged on the upper surface of the airtight rod mounting groove; A heating die provided with a tube heating part having a conical shape formed in a concave shape at the bottom thereof to open an upper end of the heat shrink tube mounted on the tube support column, and a heating die positioned on the tube support column; Moving means for moving one of the tube support pillar and the heating die in an up-down direction with respect to the other; Heat shrink cap manufacturing apparatus for protecting the wire joints comprising a. The method of claim 1, A horizontal pillar support plate to which the bottom of the tube support pillar is fixedly coupled; A tube support plate formed with a through hole through which the tube support column penetrates and is provided horizontally on the pillar support plate; Tube support plate moving means provided on the column support plate to move the tube support plate up and down; It is made to include more, The moving means is a heat shrink cap manufacturing apparatus for protecting the wire joints, characterized in that the heating die movement end for moving the heating die. The method of claim 2, The tube support pillar is arranged side by side in plurality on the column support plate, An apparatus for manufacturing a heat shrink cap for protecting a wire joint, characterized in that a plurality of tube heating parts are provided side by side in the heating die. Mounting the lower end of the rod-shaped airtight rod in the airtight rod mounting groove formed in the upper surface of the tube support column arranged vertically, the heat shrink tube so that the tube support column is inserted into the hollow of the heat shrink tube coated with a thermoplastic adhesive on the inner peripheral surface A component mounting step of placing the heat shrink tube on the tube support column, the upper end of the heat shrink tube being higher than the top of the tube support column; The upper end of the heat-shrinkable tube is heated by using a tube heating part having a concave shape formed to be concave upward. A closed end forming step of forming a; Heat shrink cap manufacturing method for protecting the wire joints comprising a. The method of claim 4, wherein The method of claim 1, wherein the upper end of the heat shrink tube is mounted so as to be positioned higher than the upper end of the hermetic seal. The method of claim 4, wherein A cap detachment step of moving the heat-shrink tube formed with the closed end upward to move away from the tube support pillar and thereby allowing the hermetic rod to be separated from the hermetic rod mounting groove; Heat shrink cap manufacturing apparatus for protecting the wire joints further comprises.

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