JPH0311613B2 - - Google Patents

Abstract

PURPOSE:To enable to supply easily adhesive agent between articles to be processed without spoiling elasticity of the article to be processed and, moreover, leaking out the adhesive agent onto the article to be processed, by providing a supply path to supply the adhesive agent between the article to be processed under a state wherein the article to be processed is pierced by a needle. CONSTITUTION:A pulse motor 20 is revolved according to thickness of cloths 11, 12 to be processed, a needle 17 is moved downward through gearing between a thread 23 and a rack 19, the cloths 11, 12 to be processed are pierced by the tip of the needle 17 and a supply port 27 of the tip of the needle 17 is placed in the middle of two pieces of cloth 11, 12 to be processed. A predetermined quantity of an adhesive agent 24 is sent into a needle supply path 25 from an adhesive agent supply device 28 through a supply pipe 29 under the state, and the adhesive agent 24 is supplied between the cloths 11, 12 from a pair of supply openings 27. In this instance, as a processing horn 9 is separated upward from the cloths 11, 12 and the cloths 11, 12 are not joined with each other, the adhesive agent 24 is supplied easily between them without being leaked out onto the surfaces of the cloths 11, 12.

Description

DETAILED DESCRIPTION OF THE INVENTION Object of the Invention (Field of Industrial Application) The present invention relates to an adhesive processing machine for adhesively fixing a plurality of sheet-like workpieces such as workpiece cloths with an adhesive.

(Prior art) When sewing two pieces of work cloth with a sewing machine, there is naturally a limit to the amount of sewing thread that can be wound around the bobbin, and when the thread runs out, the sewing operation is stopped and the bobbin is wound. This was an obstacle to improving work efficiency.
Further, when sewing is performed on a stretchable work cloth, there is also a problem in that the stretchability of the sewn portion is impaired due to the sewing.

(Problems to be Solved by the Invention) This invention is capable of adhesively fixing multiple sheet-like workpieces in a stitch-like manner with an adhesive without using sewing thread, and the work can be carried out continuously and efficiently. We have created an adhesive processing machine that can easily supply adhesive between workpieces without impairing the elasticity of the workpieces, and without leaking adhesive onto the surface of the workpieces. It is about providing.

Structure of the Invention (Means for Solving the Problems) The present invention has been made to solve the above-mentioned problems, and provides a workpiece support on which a polymerized sheet-like workpiece is placed. A workpiece support base on which a surface is formed, a use position where the workpiece is pressed against the workpiece support base, and a standby position spaced apart from the workpiece. It is equipped with a processing horn fixed to an ultrasonic vibrator that generates sonic vibrations.

The machining horn is provided with a through hole that opens at the workpiece pressing surface and extends in a direction intersecting the workpiece pressing surface.
The needle, whose base end communicates with a supply pipe that leads the thermosetting adhesive from a supply source, and whose tip has a supply path that communicates with the outside world, moves up and down with its tip pointing toward the workpiece support. accommodated as possible.

A driving means is provided between the needle and the machining horn to drive the needle so that the tip of the needle protrudes and retracts with the pressing surface of the machining horn as a boundary, and the driving means drives the needle so that the tip of the needle protrudes and retracts with the pressing surface of the machining horn as a boundary. With the needle protruding from the surface piercing the workpiece and thermosetting adhesive being supplied between the workpieces, an ultrasonic transducer is applied to the processing horn that presses the workpiece against the workpiece support surface. It is configured to heat and cure the adhesive by applying ultrasonic vibrations.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

Now, as shown in FIG. 2, the machine body 1 of the adhesive processing machine of this embodiment includes a table 2 and a
It is composed of a column 3 erected above and a fixed base 4 fixed to the upper part of the column 3. A fluid pressure cylinder is mounted and fixed on the fixed base 4, and a guide rod 30 extending vertically is fixed. A mounting arm 7 is attached to the guide rod 30 so as to be movable up and down, and the piston rod 6 of the cylinder 5 is connected to the mounting arm 7. An ultrasonic vibrator 8 is supported on the mounting arm 7, and a machining horn 9 is provided at the lower end thereof, the machining surface 9a serving as a surface for pressing the workpiece.
are connected together.

An anvil 10 serving as a workpiece support is disposed on the table 2 in correspondence with the processing horn 9, and a workpiece support surface 10a and a recess 10b are formed on the upper surface of the anvil 10. Then, as shown by the chain line in FIG.
2 are set in a stacked state, and by the protruding action of the piston rod 6 based on the operation of the fluid pressure cylinder 5, the machining horn 9 is moved down from the standby position away from the work cloths 11 and 12 to the use position, and the machining surface thereof is 9a is pressed against the workpiece cloths 11 and 12, and in this state, the horn 9 is vibrated by the ultrasonic vibrator 8, so that ultrasonic transverse vibration is applied from the workpiece surface 9a to the workpiece cloths 11 and 12. ing.

As shown in FIG. 1, a through hole 13 is formed in the center of the processing horn 9, and a needle support protrusion 14 is provided inside the hole 13 so as to be positioned approximately corresponding to the vibration node of the horn 9. It is being In addition, a flange portion 15 is formed protrudingly on the outer periphery of the processing horn 9 so as to be located substantially corresponding to the vibration node of the horn 9, similar to the needle support protrusion 14, and on one side of the flange portion 15 is formed a protrusion. A housing portion 16 communicating with the through hole 13 is formed.

In the through hole 13 of the horn 9, the needle 17 is inserted into the rotation prevention recess 18 on the outer periphery of one side of the needle 17 through the needle support protrusion 14.
It is loosely inserted and supported so that it can only move up and down while engaged with the through hole 13 and does not come into contact with the inner circumferential surface of the through hole 13,
As shown in Figure 3, there is a rack 19 on the other side outer periphery.
is partially formed. A pulse motor 20 is mounted and fixed on the flange portion 15 of the horn 9,
There is a gap 21 between the outer circumference and the outer circumferential surface of the horn 9.
is provided. Accommodating portion 16 of flange portion 15
A rotary plate 23 is fixed to the motor shaft of the pulse motor 20 so that the rotary plate 23 is housed within the motor shaft with a gap 22 from the inner wall surface thereof, and a thread 23a formed on the outer periphery of the rotary plate 23 engages with the rack 19 of the needle 17. has been done. As the pulse motor 20 rotates, the needle 17 is moved up and down through the engagement between the screw thread 23a and the rack 19, and the work cloth 1 is moved up and down on the workpiece support surface 10a.
1 and 12, and during its downward movement, Fig. 4 a
As shown in FIG. 2, the tip of the needle 17 pierces the work cloths 11 and 12 and projects into the recess 10b of the anvil 10. The pulse motor 20, the rotating plate 23, its screw thread 23a, the rack 19, etc. constitute a driving means.

The needle 17 is provided with a supply path 25 for supplying a thermosetting adhesive 24 such as polyethylene or polyamide between the work cloths 11 and 12 while piercing the work cloths 11 and 12. The supply route 2
5 is a center hole 26 formed in the center of the needle 17;
It is comprised of a pair of supply ports 27 formed on the outer periphery near the tip of the needle 17 so as to communicate with the center hole 26 . As shown in FIG.
is provided with an adhesive supply device 28, and the needle 17
is connected to the base end of the supply pipe 29 via a supply pipe 29. The adhesive 24 housed in the adhesive supply device 28 is always maintained at a predetermined temperature by an internal heater (not shown), and a pump such as an air pump or a gear pump (not shown) also installed is operated. Supply pipe 2
A predetermined amount of the needle 17 is fed into the supply path 25 of the needle 17 via the needle 9 .

Regarding the adhesive processing machine configured as described above,
Next, the effect will be explained.

Now, when adhesively fixing the work cloths 11 and 12 using this adhesive processing machine, first, the work cloths 11 and 12 are laminated on the workpiece support surface 10a of the anvil 10 as shown by the chain line in FIG. When set in the state,
The thickness of the work cloths 11 and 12 is detected by a thickness detection device (not shown). Thereafter, the processing horn 9 is moved down to the position shown in FIG.
3a and the rack 19, the needle 17 is moved down a predetermined amount and its tip pierces the work cloths 11, 12, and as shown in FIG. It is arranged between the work cloths 11 and 12.

In this state, the pump of the adhesive supply device 28 is activated, and the supply pipe 2
A predetermined amount of adhesive 24 is fed into the supply path 25 of the needle 17 through the needle 17, and as shown in FIG.
It is supplied between 12 and 12 hours. At this time, the processing horn 9
is spaced upward from the work cloths 11, 12 and the work cloths 11, 12 are not in close contact with each other. Therefore, the adhesive 24 does not leak onto the surfaces of the work cloths 11, 12, and is easily and reliably bonded between the work cloths 11, 12. is supplied to

The needle 17 is in contact with the needle support protrusion and the rotary plate 23 only at the nodes of vibration, and is not in contact with the processing horn 9 in other parts.
Therefore, no ultrasonic vibration is applied to the needle 17, and the adhesive will not leak from the supply port 27 or scatter due to the vibration.

Thereafter, the fluid pressure cylinder 5 is activated, and as shown in FIG. The needle 17 is rotated to the workpiece cloth 11, as shown in FIG.
12 and is moved upward. In this state, the ultrasonic vibrator 8 is operated to vibrate the horn 9, and ultrasonic transverse vibration is applied to the work cloths 11 and 12 from the work surface 9a thereof. Thereby, the adhesive 24 is heated to the curing reaction temperature. Thereafter, the fluid pressure cylinder 5 is operated in the opposite direction to move the processing horn 9 upward, and its processing surface 9a is separated from the processing cloths 11 and 12, completing one cycle of bonding operation.

In this way, the two work cloths 11 and 12 are firmly adhered, and by repeating the above operation while feeding the cloth, the two work cloths 11 and 12 can be adhered in a stitch-like manner. Therefore, unlike sewing using sewing thread, the stretchability of the work cloth is not impaired. If the adhesive in the adhesive supply device 28 becomes low as the gluing work progresses, all you need to do is add more adhesive; remove the bobbin thread bobbin and install a new bobbin, or replace the bobbin with a new one. The sewing work is not interrupted due to the troublesome work of removing the work cloth from the work surface in order to replace the bobbin, and the gluing work can be carried out continuously and efficiently.

It should be noted that the present invention is not limited to the above-mentioned embodiments, and the configuration of each part can be arbitrarily changed and embodied without departing from the spirit of the invention.

Effects of the Invention As detailed above, in this invention, a processing horn fixed to an ultrasonic vibrator is placed on a workpiece support base on which a polymerized sheet-like workpiece is placed. The machining horn is provided so as to be movable between a use position for pressing the workpiece and a standby position remote from the use position, and has an opening in the workpiece pressing surface of the machining horn and extends in a direction intersecting the pressing surface. A needle is formed in the through hole formed in the needle, the proximal end of which communicates with a supply pipe that leads the thermosetting adhesive from the supply source, and the distal end of which has a supply path that communicates with the outside world.
The needle is housed so that it can move up and down with its tip directed toward the workpiece support. A driving means is provided between the needle and the processing horn to drive the needle so that the tip of the needle protrudes and retracts with the workpiece pressing surface of the processing horn as a boundary. Then, the needle protruding from the workpiece pressing surface of the processing horn pierces the workpiece, and with the thermosetting adhesive being supplied between the workpieces, the processing horn that presses the workpiece is subjected to ultrasonic vibrations. is applied and the adhesive is heated and cured.

With this structure, the thermosetting adhesive supplied between the workpieces by the needle is subjected to ultrasonic vibrations on the machining horn that presses the workpiece against the support surface of the workpiece support base. This allows the workpiece to be instantaneously heated, hardened, and polymerized to be easily bonded near the needle piercing point. As a result, unlike the conventional method of fixing workpieces using sewing thread, the workpiece can be firmly bonded without impairing the elasticity of the workpiece.

Furthermore, since the adhesive is thermosetting, it does not clog the supply path of the needle, and since the thermosetting adhesive is supplied to the needle from the supply pipe, there is also an effect that the bonding work is not interrupted.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway front view showing the main parts of a bonding machine embodying the present invention, FIG. 2 is a partially cutaway front view showing the entire bonding machine on a reduced scale, and FIG.
The figure is an enlarged perspective view showing a configuration for moving the needle up and down, and FIGS. 4a to 4c are partially enlarged cross-sectional views showing the operating state of the adhesive processing machine in order. In the figure, 1 is the machine body, 8 is an ultrasonic vibrator, 9 is a processing horn, 10 is an anvil, 10a is a workpiece support surface, 11 and 12 are processing cloths as workpieces, 17 is a needle, and 20 is a pulse 24 is an adhesive, 25 is a supply path, 26 is a center hole, and 27 is a supply port.

Claims (1)

[Scope of Claims] 1. A workpiece support base having a workpiece support surface on which a polymerized sheet-like workpiece is placed;
It is movable between a use position where the workpiece is pressed against the workpiece support base and a standby position where it is separated from the workpiece, and is fixed to an ultrasonic vibrator that generates ultrasonic vibrations. The processing horn is provided with a through hole that opens at the workpiece pressing surface and extends in a direction intersecting the workpiece pressing surface, and the through hole has a proximal end. A needle, which is connected to a supply pipe that leads the thermosetting adhesive from a supply source, and whose tip has a supply path that communicates with the outside world, is moved up and down with the tip of the needle pointing toward the workpiece support. A driving means is provided between the needle and the machining horn to drive the needle so that the tip of the needle protrudes and retracts with the workpiece pressing surface of the machining horn as a boundary. A needle protruding from the workpiece pressing surface pierces the workpiece, supplying thermosetting adhesive between the workpieces, and ultrasonic vibration is applied to the processing horn that presses the workpiece against the workpiece support surface. An adhesive processing machine characterized in that the adhesive is configured to heat and harden adhesive by applying ultrasonic vibrations from a child.