JPS59196214A - Method for mounting electrically conductive snap fastener and high frequency heating electrode used therefor - Google Patents

Abstract

PURPOSE:To mount conductive snap fastener positively to a thermally meltable sheet, the conductive snap fastener comprising a male member and a female member having engaging sections at the central sections to be engaged with each other, by employing a cylindrical high frequency heating electrode having an insulating layer on the inner circumferential surface. CONSTITUTION:The central section of a thermally meltable sheet piece 30 is formed with a through-hole 31 that is little larger than the outer diameter of the male member 2a of a conductive snap fastener, and with an engaging projection 5 of the male member 2a inserted into the through-hole 31 of the thermally meltable sheet piece 30 and directed upward, the male member 2a is inserted into the inner circumferential surface of a heating electrode main body 23 of a high frequency heating electrode 21, which inner circumferential surface has an insulating layer 24. Then the high frequency heating electrode 21 is lowered so that an annular end surface 32 of the heating electrode main body 1 is pressed via the thermally meltable sheet piece 30 to a thermally meltable sheet 1 thereby welding them under the influence of the high frequency. Thus the conductive snap fastener can be mounted positively.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for attaching a conductive hook to a thermofusible sheet using a high-frequency welding device, and a high-frequency heating electrode used therein.

Conventionally, there are methods for attaching this type of conductive hook, particularly methods for attaching the hook to prevent rainwater from penetrating through the hook, as shown in Figures 1 to 3. .

That is, numeral 1 in the figure is a thermofusible sheet made of synthetic resin such as vinyl chloride or nylon, and conductive hooks 2 are attached at required intervals to the edges that form the joints of, for example, a raincoat. A through hole 3 is bored through which the protrusion is inserted.

The conductive hook 2 consists of a male member 2a consisting of a flat plate part 4 and an engaging protrusion 5 formed at the center thereof as shown in FIG. The engagement protrusion 5 and the engagement recess 7 are configured to be able to be fitted into and removed from each other.

In the case of a raincoat, the female member 2 is usually
b is attached to the upper side of the seam, and the male member 2a is attached to the lower side of the seam.

Here, in order to attach the conductive hooks 2 to the thermofusible sheet 1 in this way, for example, first insert the female member 2a (or female member 2b) into each through hole 3 of the thermofusible sheet 1 from one side. The engaging protrusion 5 (or engaging I!!) part 7) is inserted through the connector to protrude to the other side, and then another heat-fusible covering 9 is attached to cover the insertion side, and in this state, the male Part 2
The thermofusible sheet 1 is sandwiched between the male member 2a (or the female member 2b) by a high frequency welding device equipped with a flat high frequency heating electrode 11 in which a through hole 10 is formed that is much wider than the male member 2a (or the female member 2b). and the thermofusible covering cloth 9 are welded together and attached to the thermofusible sheet 1.

In this way, there is an advantage that when attaching the conductive hook 2 of a raincoat or the like made of the thermofusible sheet 1, rainwater or the like will not penetrate through the part and wet the body.

By the way, conventionally, when attaching the conductive hook 2, the flat high-frequency heating electrode 11 having the through hole 10 which is much wider than the conductive hook 2 is used because the hook to be attached is conductive. Therefore, when the high-frequency heating electrode 11 is brought into contact with or very close to the conductive hook 2 during high-frequency welding, an arc discharge is generated between the conductive hooks 2 and a severe impact, and at the same time the thermofusible sheet 1 This is to avoid the risk of the surface melting.

However, if a space is left between the conductive hook 2 and the high-frequency heating electrode 11 to be attached in this way, naturally the welding position of the thermofusible sheet 1 and the thermofusible covering 9 that sandwich the conductive hook 2 will be shifted to the conductive hook 2. Therefore, a cavity is formed around the conductive hook 2, and the conductive hook 2 cannot be held securely. If the fitting and removal are carried out frequently, cracks will immediately occur in the surrounding heat-fusible sheet 1, which is a serious drawback.

In addition, in the flat high-frequency heating electrode 11 as described above, the pitch of the through holes 10 is selected in advance according to the predetermined mounting interval of the conductive hooks 2 to be mounted. There is the trouble of having to prepare high-frequency heating electrodes 11 corresponding to each type, and the length of the high-frequency heating electrodes 11 installed in ordinary high-frequency welding equipment is limited to about 250 an at most. The conductive hooks 2 could not be attached at any desired intervals.

Therefore, the present invention has been made to eliminate the various drawbacks of the prior art as described above, and uses a cylindrical high-frequency heating electrode with an insulating layer formed on the inner circumferential surface to heat a conductive hook. The thermofusible sheet can be attached to the fusible sheet at any desired interval, and the thermofusible sheet to which the conductive hook is attached and fixed, and the thermofusible material to be welded to each other are welded at a position close to the outer edge of the conductive hook. The object of the present invention is to provide a novel method for attaching a conductive hook that enables reliable attachment and retention of the conductive hook, and a high-frequency heating electrode used therein.

In order to achieve the above object, the present invention first uses a high frequency welding device to attach a conductive hook consisting of a male member and a female member, each of which has an engaging portion formed in the center to engage with each other, to a thermofusible sheet. In the method for attaching a conductive hook, the high frequency welding device is equipped with a cylindrical high frequency heating electrode having an insulating layer formed on the inner peripheral surface, and a thermofusible sheet piece is attached to the male member and/or female member of the conductive hook. Then, hold the male member and/or female member of the conductive hook in the above state so that the outer edge of the thermofusible sheet piece faces the lower end surface of the cylindrical high frequency heating electrode, and the outer peripheral edge of the male member or female member faces the lower end surface of the cylindrical high frequency heating electrode. The cylindrical high-frequency heating electrode is fitted so as to fit into the inner circumferential surface of the high-frequency heating electrode, and from this state, the lower end surface of the cylindrical high-frequency heating electrode is pressed against the thermofusible sheet via the thermofusible sheet piece, and at the same time, the cylindrical high-frequency heating electrode is A specific invention is a method for attaching a conductive hook, which is characterized in that the thermofusible sheet piece and the thermofusible sheet are heated and welded by high frequency by applying electricity to a high frequency heating electrode.

Further, in the method for attaching a conductive hook, in which a conductive hook is attached to a heat-fusible sheet by a high-frequency welding device, the conductive hook is made up of a male member and a female member each having an engaging portion formed in the center to engage with each other. The device is equipped with a cylindrical high-frequency heating electrode with an insulating layer formed on the inner circumferential surface, and the retaining protrusion of the male member and/or female member of the conductive hook is completely inserted into the insertion hole formed in the thermofusible sheet. At the same time, the insertion side is covered with a thermofusible covering cloth, and from this state, the lower end surface of the high frequency heating electrode is pressed into contact with a position close to the outer edge of the male member or female member of the conductive hook. A method for attaching a conductive hook, characterized in that the thermofusible sheet and the thermofusible covering cloth are heated and welded by applying electricity to a high frequency heating electrode, and a high frequency welding apparatus for attaching the conductive hook to the thermofusible sheet. In the heating electrode, the high-frequency heating electrode main body is formed into a substantially cylindrical shape so that the male member or the female member of the conductive hook can be inserted thereinto, and at the same time, an insulating layer is formed on the inner peripheral surface thereof. The high-frequency heating electrodes characterized in that they are each constituted as a combined invention.

Hereinafter, the present invention will be described in detail based on specific embodiments shown in the drawings.

FIG. 4 shows a schematic explanatory diagram of the high frequency welding device 2o.
A cylindrical heating electrode body 23 is held movably forward and backward relative to the conductive pouch 2, and has an inner diameter selected to be the same as or slightly larger than the outer diameter of the male member 2a or female member 2b of the conductive pock 2, as shown in FIG. Further, an insulating layer 24 coated with an insulating material such as Teflon is formed on the inner peripheral surface of the heating electrode main body 23 over the entire circumference thereof.

In the figure, reference numeral 25 denotes an operating head that slidably holds the high-frequency heating electrode 21, and is equipped with a sliding drive mechanism 26 that moves the high-frequency heating electrode 21 forward and backward relative to the pedestal 22.

Although not shown, the sliding drive mechanism 26 includes a pinion that is connected to a motor and driven to rotate, and a rank that meshes with the pinion and is attached to the high-frequency heating electrode 21 via an elastic body such as a spring. It may also be configured by a screw rod connected to the motor and a screw connected to the screw rod and attached to the high frequency heating electrode 21 via an elastic body such as a spring. Any linear actuation mechanism may be applied.

The high-frequency heating electrode 21 and the pedestal 22 are connected to a high-frequency power source 27, and by stepping on the foot switch 28 disposed on the lower front side of the pedestal 22, the high-frequency heating electrode 21 and the pedestal 22 can be connected to a high-frequency power source 27. A high frequency output from the high frequency power supply 27 is applied during this period.

The above is an example of the configuration of the high frequency welding device 20 and the high frequency heating electrode 21 equipped therein.Next, a method of attaching the conductive hook 2 to the thermofusible sheet 1 using this will be explained.

FIG. 6 is a sectional view showing an example of the method of the present invention, in which an engaging protrusion of the male member 2a is attached to the center of a circular heat-fusible sheet piece 30 that is slightly larger than the outer diameter of the male member 2a of the conductive hook 2. With the heat-fusible sheet piece 30 locked to the engagement protrusion 5 of the male member 2a, the male member 2a is subjected to high-frequency heating with the engagement protrusion 5 facing upward. Electrode 2
It is inserted into the inner peripheral surface of the heating electrode main body 23 of No. 1.

When the male member 2a is fitted to the high-frequency heating electrode 21 in this manner, the thermofusible sheet piece 30 that is locked to the male member 2a and extended to the outer edge of the male member 2a is attached to the annular end surface 32 of the heating electrode body 23.
This state is maintained and the thermofusible sheet 1-1 is placed at a predetermined position on the pedestal 22.

Then, the sliding drive mechanism 26 (fourth
(shown in the figure) to lower the high-frequency heating electrode 21,
The annular end surface 32 of the heating electrode main body 23 is pressed against the thermofusible sheet 1 via the thermofusible sheet piece 30, and then the footswitch 28 is depressed to connect the high frequency power source 27 (the fourth A high frequency output from a thermoplastic sheet (as shown in the figure) is applied, and the thermofusible sheet 1 and the thermofusible sheet piece 30 are welded and sewn together as shown by chain lines.

Then, after the required time has elapsed, the application of the high frequency output from the high frequency power supply 27 is stopped to stop the heating, and after waiting for the welded seam to harden, the sliding drive mechanism 26 is activated again to raise the high frequency heating electrode 21. let

In addition, the welding and suturing time in this case is based on the high frequency power source 2.
It usually takes about several tens of seconds, although it varies depending on the strength of the high frequency output in step 7 and the materials and thicknesses of the thermofusible sheet 1 and the thermofusible sheet pieces 30.

As described above, according to the high frequency heating electrode according to the present invention and the method for attaching a conductive hook according to the present invention, the thermofusible sheet 1 and the thermofusible sheet piece 30 are attached to the male member 2a of the conductive hook 2 (or similarly Since the welding occurs around the outer edge of the female member 2b), the male member 2a (or female member 2b) is reliably attached and fixed to the thermofusible sheet 1, and there is no fear of cracks occurring as in the conventional example described above. It will be resolved.

In addition, the conductive hooks 2 can be freely attached to the heat-fusible sheet 1 at desired positions at arbitrary intervals, and therefore, it is possible to attach the conductive hooks 2 to the heat-fusible sheet 1 at any desired position. This has the excellent effect of allowing conductive hooks to be attached to soluble sheet materials with consideration given to their waterproof properties.

Note that the means for locking the thermofusible sheath I/piece 30 according to the present invention to the male member 2a and female member 2b of the conductive hook 2 is not limited to the above, but for example, as shown in FIG. The female part JA2b has a member 40.
41, etc., and a means for holding the thermofusible sheet piece 30 therebetween can also be employed.

Next, FIG. 8 shows another method for attaching the conductive hook according to the present invention. First, the male member 2a (or The engagement protrusion 5 (or engagement recess 7) of the female member 2b) is inserted from the negative side and protrudes to the other side.

Next, the insertion side of the male member 2a is covered with a thermofusible covering cloth 50, and while this state is maintained, the engagement protrusion 5 is placed on the pedestal 22 of the high frequency welding device 20 with the center opening of the high frequency heating electrode 21 located above. Place them facing upwards.

Then, the sliding drive mechanism 26 of the high frequency welding device 20 is operated to lower the cylindrical high frequency heating electrode 21 having an inner diameter into which the female member 2a can be inserted, so as to surround the male member 2a and press the male part +A'. At the same time, pressing the annular end surface 32 of the high frequency heating electrode 21 to a position close to the outer edge of 2a,
The high frequency heating electrode 21 is energized to weld and stitch the thermofusible sheet 1 and the thermofusible covering 50 together by high frequency.

When the heat-welded portion is solidified, the sliding drive mechanism 26 is activated to raise the high-frequency heating electrode 21, and at the same time, the thermofusible sheet 1 and the thermofusible covering 50 are moved a required distance with the male member 2a sandwiched therebetween. The male member 2a to be attached next is brought under the high frequency heating electrode 21 in the same manner as described above, and the same operation is repeated again to sequentially heat the thermofusible sheet 1.
The male members 2a can be attached and held at required intervals.

Although only the male member 2a has been described in the drawings, the female member 2b may also be attached in the same manner.

Moreover, although the case where the high-frequency heating electrode 21 is formed in a cylindrical shape has been described, the present invention is not limited to this, and it can also be formed in a rectangular cylinder shape such as a triangular, square, or hexagonal shape, and can be formed in any arbitrary shape.

Furthermore, the thermofusible covering 50 can also be used by folding back the thermofusible sheet 1.

Furthermore, the high-frequency heating electrode according to the present invention is not limited to the case where a single high-frequency heating electrode is provided, but a plurality of high-frequency heating electrodes can also be provided.

As described above, according to the present invention, a substantially cylindrical high-frequency heating electrode with an insulating layer formed on the inner circumferential surface generates arc discharge at a position close to the outer edge of a conductive hook attached to a thermofusible sheet. It is now possible to perform welding and suturing without causing any damage, and as a result, there is an excellent effect that has not existed in the past, in that the conductive hook can be reliably attached and held to the thermofusible sheet.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing a conductive hook attached to a thermofusible sheet by a conventional method of attaching a conductive hook, and Fig. 2 A and B show an example of a male member and a female member of the conductive hook. 3 is a perspective view showing a conventionally used flat plate-shaped high-frequency heating electrode, FIG. 4 is a schematic side view showing an example of a high-frequency welding device equipped with the high-frequency heating electrode according to the present invention, and FIG. 5 is a cross-sectional view. 6 is a partial cross-sectional view showing a high-frequency heating electrode according to the present invention, FIGS. 6 and 7 are cross-sectional views showing an example of the method of the present invention, and FIG. 8 is a cross-sectional view showing another example of the method of the present invention. Explanation of symbols 1--thermofusible sheet, 2-conductive pock, 2a--
male member, 2b-female member, 5-engaging protrusion, 7-engaging recess,
20 - High frequency welding device, 21 - High frequency heating electrode, 23 - Heating electrode body, 24 - Insulating layer, 32 - Annular end surface (lower end surface)
, 30--thermofusible sheet piece, 50-thermofusible covering. Patent applicant Miyako Furukawa

Claims (1)

[Scope of Claims] (11) Mounting of a conductive hook consisting of a male member and a female member, each having an engaging portion formed in the center to engage with each other, onto a thermofusible sheet using a high-frequency welding device. In the method, the high-frequency welding device is equipped with a cylindrical high-frequency heating electrode having an insulating layer formed on the inner peripheral surface, and a piece of thermofusible seam 1 is locked to the male member and/or female member of the conductive hook. Then, the male member and/or female member of the conductive hook in the above state is placed so that the outer edge of the thermofusible sheet piece faces the lower end surface of the cylindrical high-frequency heating electrode, and the outer periphery of the male member or female member is heated by the high-frequency heating. The lower end surface of the cylindrical high-frequency heating electrode is pressed against the thermofusible sheet via the thermofusible sheet piece from this state, and at the same time, the cylindrical high-frequency heating electrode A method for attaching conductive hooks, characterized in that the heating electrodes are energized and the heat-fusible sheet pieces and the heat-fusible sheets are heat-welded by high frequency. (2) A high-frequency welding device engages the heat-fusible sheet pieces with each other at the center. In a method for attaching a conductive hook to a heat-fusible sheet, the conductive hook is made of a male member and a female member each having an engaging portion formed thereon, and the high-frequency welding device includes a cylindrical high-frequency heating device having an insulating layer formed on its inner circumferential surface. Equipped with an electrode, and at the same time inserting the engaging protrusion of the male member and/or female member of the conductive hook into the insertion hole formed in the thermofusible sheet from one side, the insertion side is covered with a thermofusible cloth. From this state, the lower end surface of the high-frequency heating electrode is pressed against the outer edge of the male member or female member of the conductive hook, and at the same time, electricity is applied to the high-frequency heating electrode to apply high frequency to the thermofusible seam 1- A method for attaching a conductive hook, which comprises heating and welding a conductive hook to a thermofusible sheet. (3) In a high-frequency heating electrode of a high-frequency welding device for attaching a conductive hook to a thermofusible sheet, the high-frequency heating electrode body is At the same time, it is formed into a substantially cylindrical shape so that the male member or female member of the conductive hook can be inserted or inserted,
A high-frequency heating electrode characterized by having an insulating layer formed on its inner peripheral surface.