JPH0739802A - Heating type gun - Google Patents

Abstract

PURPOSE:To simplify a coding operation for making extrusion application in a heated state and to eliminate the restriction on a working range by adopting constitution which has an extruding gun, a cartridge can, a nozzle and a hollow part and heats a hollow cylindrical heating cylinder placed in the placing part of this extruding gun by a heating means. CONSTITUTION:The nozzle 52 is mounted on the cartridge can 50 in which a content filled and which executes the extrusion application operation in a heated state and the cartridge can 50 is housed into the heating cylinder 54. The integral assembly of the cartridge can 50 and the heating cylinder 54 is placed and housed in the placing part of the extruding gun 10 to constitute the heating type gun H, which is then housed into the heating type gun housing place of the heating device. A heater member E of the heating cylinder 54 is turned on and is heated when the connector of a power source cord 72 is connected to a connector receiving part. The cartridge can 50 housed in the heating cylinder 54 is heated and the content is liquefied when the prescribed time passes by. The heating type gun H is removed in this state from the heating device and the coating operation is carried out.

Description

Detailed Description of the Invention

[0001]

INDUSTRIAL APPLICABILITY In the present invention, extrusion coating work is carried out in a heated state of a thermoplastic (including reactive) sealing material, a hot melt adhesive, a reactive hot melt adhesive, etc. enclosed in a cartridge can. The present invention relates to a heating gun capable of extrusion coating contents with a simple operation and a heating method thereof.

[0002]

2. Description of the Related Art Conventionally, a thermoplastic (including reactive) sealing material, a hot-melt adhesive, or a reaction material which has a property of being solid at room temperature and liquefied when heated in a cartridge can made of aluminum or other material Hot melt adhesive or high viscosity at room temperature but 50-60
A material that decreases in viscosity when heated to ℃ and becomes easier to extrude, or a paste that is developed by the applicant at room temperature and is a paste even when heated, but a putty (clay that is heated at room temperature) One-part room temperature moisture-curable composition (see JP-A-2-279766 and JP-A-5-11)
No. 7533) and the like, in the case of extrusion coating the contents to be extruded and coated in a heated state, the cartridge can is heated and the above contents are liquefied, reduced in viscosity or made into a paste. A device for extruding and coating contents from a nozzle at the tip by pressing the plunger at the rear end of the cartridge can and applying pressure to the liquefied, low-viscosity or paste-like contents is generally hot. Known as the melt gun.

Since this conventional hot melt gun uses compressed air as a pressurizing means for pushing out the contents, it has a compressor and an air supply hose for supplying compressed air. This compressor is not installed at the work site and has to be brought to the site each time, and the air supply hose is especially thick and hard, and it is connected to the hot melt gun. Working while dragging was a heavy labor.

A conventional metal nozzle is used for the conventional hot melt gun, and when the contents become low in temperature and become solid, the nozzle is clogged and cleaning thereof is troublesome. In particular, when a reactive hot melt adhesive or a reactive thermoplastic sealing material is used as the content, it causes a curing reaction by reacting with moisture in the air, so the clogging of the nozzle becomes particularly severe, and cleaning is difficult. It became more difficult.

Further, since electric heat is used as a means for heating the conventional hot melt gun, a power cord is connected. This power cord is much thinner and lighter than the air supply hose, so it will not be so difficult to work with it connected. However, it can be said that this is one of the causes of inconvenience because the work cannot be performed in a range where the power cord does not reach.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned prior art. It does not use compressed air, does not use a dedicated nozzle, and the power cord can be connected and disconnected freely. As a result, it is possible to apply the thermoplastic (including reactive) sealing material, the hot melt adhesive, the reactive hot melt adhesive, and the above-mentioned one-part room temperature moisture-curable composition enclosed in the cartridge can. It is an object of the present invention to provide a novel heating gun that is simple and eliminates restrictions on the working range such as within reach of a power cord or within reach of an air supply hose.

[0007]

In order to solve the above-mentioned problems, the heating gun of the present invention comprises an extrusion gun, a cartridge can, a nozzle detachably attached to the tip of the cartridge can, and the cartridge can. And a hollow cylindrical heating cylinder mounted on the mounting portion of the extrusion gun and a heating means for heating the heating cylinder. .

As a means for heating the heating cylinder, a heater member may be installed inside the peripheral wall of the heating cylinder, and the heater member and a power source may be electrically connected to heat the heater member.

Specifically, a connector receiving portion electrically connected to the heater member and provided on the outer surface of the heating cylinder is provided on the outer surface of the heating cylinder, and the connector receiving portion and the connector of the power cord are connected to each other. Configure to connect.

In order to facilitate the connection between the connector receiving portion and the connector, a base, a heating gun accommodating portion provided on the base, and a connector receiving portion of the heating cylinder attached to the accommodating portion. It is preferable to use a heating device composed of a connector of a power cord connectable with.

In this heating apparatus, if the nozzle accommodating portion is connected to the tip of the heating gun accommodating portion and the nozzle accommodating portion is also heated, the contents of the one heating gun, particularly the nozzle portion. Is better heated.

[0012]

The operation of the present invention is as follows. First, at room temperature, a thermoplastic (including reactive) sealing material or hot-melt adhesive that has a property of liquefying when heated in a solid state,
Reactive hot-melt adhesives, or materials that have a high viscosity at room temperature but become easily extruded when heated to 50-60 ° C., or a paste developed at room temperature developed by the applicant of the present application, and a paste even when heated. However, once heated and cooled (at room temperature), it becomes putty-like (clay-like). The contents such as the above-mentioned one-part room temperature moisture-curable composition in which extrusion coating work is performed in a heated state are enclosed. A nozzle is attached to the cartridge can and the cartridge can is housed in the heating cylinder.

Next, the integral body of the cartridge can and the heating cylinder is placed and housed in the placement portion of the extrusion gun to form a heating gun. The heating gun is housed in the heating gun housing of the heating device. When the connector of the power cord is connected to the connector receiving portion, the heater member of the heating cylinder is turned on and heated.

After a lapse of a predetermined time from turning on the power source, the cartridge can contained in the heating cylinder is heated by the heating cylinder, and the contents of the cartridge can are liquefied. In this state, the heating gun is removed from the heating device to perform the coating operation. In this case, since the heating gun does not have a power cord connection and naturally does not have an air supply hose as in the conventional case, it is possible to perform the work as easily as applying a sealing material or an adhesive from a normal extrusion gun. It can be performed.

When the working time is exceeded and the temperature of the cartridge can is lowered to make the extrusion coating work difficult, the heating gun is mounted on the heating device again and the heating cylinder is set to the same as above. Then, the temperature of the cartridge can is raised to start the operation again.

[0016]

An embodiment of the present invention will be described below with reference to the accompanying drawings. In the figure, H is a heating gun according to the present invention. The heating gun H has an extrusion gun 10. The extrusion gun 10 may have a conventionally known structure, for example, the one shown in FIG.

The extrusion gun 10 is composed of a main body 12 for performing an extrusion operation, and a semi-cylindrical mounting portion 14 formed in front of the main body 12 and having an upper opening.

A handle portion 16 is provided below the body portion 12, and a lever 20 is rotatably supported on the handle portion 16 by a shaft 18 so as to be rotatable. When the lever 20 is pulled to the front, the push pin 22 provided on the upper portion of the lever 20 moves forward, and the push pin 22 pushes the push member 24 in the main body 12 forward.

A long piston rod 26 penetrates the pushing member 24, and the piston rod 26 also penetrates a rear wall 28 of the main body 12 and projects rearward. A plate-shaped piston 30 is attached to the tip of the piston rod 26. As the pushing-out means of the pushing-out member 24, the manual lever 20 is shown in the illustrated example, but the pushing-out member 24 can be pushed out by using an electric means.

Reference numeral 32 denotes a first compression spring, which is interposed between the front wall 34 of the main body 12 and the pushing member 24, and the pushing member 24 is always biased rearward. As described above, when the lever 20 is pulled forward, the push-out pin 22 moves forward, and the push-out member 24 in contact with the push-out pin 22 moves forward against the first compression spring 32. Since the push-out member 24 is pushed out in a tilted manner, the through hole 36 of the push-out member 24 comes into contact with and locks with the piston rod 26, and the piston rod 26 is pushed forward so as to move forward.

When the lever 20 is released, the pushing force of the first compression spring 32 causes the pushing member 24 to return to its original position. At this time, the rear wall of the piston rod 26 is located behind the rear wall 2.
8 is locked by the locking hole 42 of the stopper plate 40 that is biased rearward by the second compression spring 38 interposed between the piston rod 26 and the piston rod 26. There is.

An opening 46 is bored in the tip wall 44 of the semi-cylindrical mounting portion 14.

Reference numeral 50 denotes a cartridge can made of aluminum or another material. The cartridge can 50 is a thermoplastic (including reactive) sealing material having a property of being solid at room temperature and liquefied when heated, A hot-melt adhesive, a reactive hot-melt adhesive, or a material that has a high viscosity at room temperature but is easily extruded due to a decrease in viscosity when heated to 50-60 ° C., or a paste at room temperature developed by the applicant, It is paste-like even in the heated state, but once heated and cooled (at room temperature) it becomes putty-like (clay-like). Extrusion coating work is performed in the heated state like the above-mentioned one-part room temperature moisture-curable composition. Contents A are enclosed.

A plunger 50a is attached to the base end of the cartridge can 50, and a nozzle 52 is detachably attached to the tip end. By pressing the plunger 50a, the contents A are extruded from the tip nozzle 52 and applied.

Reference numeral 54 denotes a hollow cylindrical heating cylinder having a hollow portion 56 for removably accommodating the cartridge can 50 and can be mounted on the mounting portion 14 of the extrusion gun 10. The opening at the tip of the hollow portion 56 of the heating cylinder 54 is smaller than the diameter of the cartridge can 50, and the nozzle 52 projects from the tip of the heating cylinder 54.
Are configured so as not to fall from the tip of the heating cylinder 54.

A heater member E is installed inside the peripheral wall 58 of the heating cylinder 54. Reference numeral 60 denotes a connector receiving portion provided on the outer surface of the heating cylinder 54, which is electrically connected to the heater member E. Reference numeral 61 is a guide piece attached to the upper surface of the connector receiving portion 60, and a guide groove 61 is provided at the tip end portion thereof.
a is provided. A temperature adjusting device such as a thermostat is connected to the heater member, and a peripheral wall 58 of the heating cylinder 54 is connected.
The internal temperature can be adjusted to a predetermined temperature.

On the other hand, 62 is a heating device for heating the heating gun H. The heating device 62 includes a base 64,
It has a heating type gun accommodating portion 66 provided on the base 64. The heating gun accommodating portion 66 is shown as an example in which it is provided in a tilted state by the support frames 68 and 70 on the base 64 as a preferable example for handling. However, the mounting state of the heating gun accommodating portion 66 is not limited to the illustrated example, and it goes without saying that any form can be adopted as long as the heating gun H can be accommodated.

The shape of the heating gun accommodating portion 66 is as follows.
Although a semi-cylindrical shape having an open upper part is shown, it goes without saying that a cylindrical shape having no opening in the upper part may be used. The point is that the heating gun H can be accommodated in a stable manner, and the shape thereof is not particularly limited.

A power cord 72 connectable to the connector receiving portion 60 of the heating cylinder 54 is provided in the heating gun accommodating portion 66.
A holding frame 75 for the connector 74 is provided.
A guide pin 75a is provided on the upper surface of the holding frame 75 so as to project therefrom. A known connecting means may be applied to connect the connector 74 and the connector receiving portion 60, but a magnetic contact is preferable. By inserting the guide pin 75a of the holding frame 75 into the guide groove 61a of the connector receiving portion 60, the connecting operation between the connector 74 and the connector receiving portion 60 is stably performed.

At the tip of the hot melt gun housing portion 66, a cylindrical nozzle housing portion 76, which has a hollow portion and closes the tip, is provided in series. The tip of the nozzle housing portion 76 is supported by a support frame 78. The nozzle housing portion 76
The heater member F is also disposed inside the peripheral wall 80 of the above, and is connected to the second power cord 82. A temperature adjusting device such as a thermostat is connected to the heater member, and the nozzle accommodating portion 7
The temperature inside the peripheral wall 80 of 6 can be adjusted to a predetermined temperature. The power cord 72 and the second power cord 82 may be attached separately, but as shown in the drawing, the tip portions thereof may be converged into one.

The operation of the above structure will be described below. First, a thermoplastic (including reactive) sealing material having a property of liquefying when heated at room temperature, a hot-melt adhesive, a reactive hot-melt adhesive, or a high-viscosity room temperature of 50 to 60 ° C. A material that decreases in viscosity when heated to extrude and is easy to extrude, or a paste developed at room temperature developed by the applicant of the present application and a paste even when heated, but putty-like (clay-like) once heated and cooled (at room temperature) No. 52 is attached to the cartridge can 50 in which the contents A to be subjected to the extrusion coating operation in the heated state such as the above-mentioned one-part room temperature moisture-curable composition, etc. It is housed inside (Fig. 3).
The nozzle 52 can be attached even after being housed in the heating cylinder 5.

Next, the cartridge can 50 and the heating cylinder 5
The heating gun H is constructed by mounting and accommodating the one integrated with 4 on the mounting portion 14 of the extrusion gun 10 (FIG. 1). This heating gun H
Is housed in the heating gun housing portion 66 of the heating device 62 (FIGS. 5 and 6). Connector 74 of the power cord 72
Is connected to the connector receiving portion 60, the heating cylinder 54
The heater member E is turned on and is heated. This heating temperature is appropriately set according to the content A of the cartridge can 50. For example, 120 for thermoplastic sealants.
± 10 ° C, 160 for reactive hot melt adhesives
± 10 ° C or the like is adopted.

When a predetermined time has passed since the power was turned on, the cartridge can 50 housed in the heating cylinder 54 is heated by the heating cylinder 54, and the contents A of the cartridge can 50 are liquefied. In this state, the heating gun H is removed from the heating device 62 to perform the coating work. in this case,
Since the heating gun H does not have a power cord 72 connected and naturally does not have an air supply hose as in the conventional case, the operation is as simple as applying a sealing material or an adhesive from an ordinary extrusion gun. It can be carried out. That is, when the lever 20 of the push-out gun 10 is pulled toward you, the plate-shaped piston 30 at the tip of the piston rod 26 presses the plunger 50a of the cartridge can 50, and the contents are discharged into the nozzle 5
Push out from 2.

When the working time is exceeded, the cartridge can 5
When the temperature of 0 decreases and the coating work becomes difficult, the heating gun H is mounted on the heating device 62 again, and the heating cylinder 54
Can be heated in the same manner as above to raise the temperature of the cartridge can 50, and the operation can be started again.

By connecting the second power cord 82 to the power source, the heater member in the peripheral wall 80 of the nozzle accommodating portion 76 is turned on and heated and adjusted to a predetermined temperature. By heating the nozzle housing portion 76, the nozzle portion is heated together with the cartridge can 50,
There is no difference in temperature between the main body of the cartridge can and the nozzle, so the work can be done smoothly.

In particular, when the heating gun H is housed in the heating device 62 when the work is interrupted, it is preferable because the temperature of the nozzle portion can be prevented from lowering and the nozzle can be prevented from being clogged.

The nozzle used in the heating gun of the present invention is a disposable nozzle attached to the cartridge can 50. Since a dedicated nozzle is not used unlike the conventional hot melt gun, it is troublesome to wash the nozzle. Work is also eliminated.

In the above embodiment, the heating gun H is placed and housed in the heating device 62 to heat the heating cylinder 54. According to the present invention, the advantage of not using the air supply hose that most hinders the coating operation already exists as compared with the conventional hot melt gun. There is no particular inconvenience when the coating operation is performed on the heating gun of the present invention while the power cord 72 is connected.
Since the cartridge can 50 is constantly heated, there is an advantage that the temperature of the cartridge can 50 does not decrease and the work can be performed for a long time.

[0039]

As described above, according to the present invention, the compressed air is not used, the dedicated nozzle is not used, and the power cord is detachably connected to the cartridge can. A thermoplastic (including reactive) sealing material having a property of liquefying when heated at room temperature, a hot-melt adhesive, a reactive hot-melt adhesive, or a high viscosity at room temperature of 50 to 60 ° C A material that decreases in viscosity when heated to extrude and is easy to extrude, or a paste developed at room temperature developed by the applicant of the present application and a paste even when heated, but putty-like (clay-like) once heated and cooled (at room temperature) ) The above-mentioned one-part room temperature moisture-curable composition, etc., which is extruded and coated in a heated state, can easily coat the contents, and can be supplied within the reach of the power cord or air supply. Constraints working range as that within the reach of over scan is an effect that has been resolved.

[Brief description of drawings]

FIG. 1 is an overall perspective view showing an embodiment of a heating gun of the present invention.

FIG. 2 is a side view showing an example of an extrusion gun used for the heating gun of the present invention.

FIG. 3 is a schematic perspective view of a cartridge can and a heating cylinder.

FIG. 4 is an overall perspective view showing an embodiment of the heating device of the present invention.

FIG. 5 is an overall perspective view showing a state in which the heating gun of the present invention is placed and housed in a heating device.

FIG. 6 is a cross-sectional explanatory view showing a state in which the heating gun of the present invention is placed and housed in a heating device.

[Explanation of symbols]

 H Heating Gun 10 Extrusion Gun 14 Placement Section 20 Lever 50 Cartridge Can 50a Plunger 52 Nozzle 54 Heating Cylinder 62 Heating Device 66 Heating Type Gun Housing 76 Nozzle Housing

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Akio Futamura 4-5-9 Higashigotanda, Shinagawa-ku, Tokyo Inside Cemedine Co., Ltd.

Claims (7)

[Claims] 1. An extrusion gun, a cartridge can, a nozzle removably attached to the tip of the cartridge can, a hollow part for accommodating the cartridge can so that the cartridge can can be taken out, and a mounting part of the extrusion gun. A heating gun comprising: a hollow cylindrical heating cylinder to be placed; and heating means for heating the heating cylinder. 2. An extrusion gun, a cartridge can, a nozzle removably attached to the tip of the cartridge can, and a hollow portion for removably accommodating the cartridge can, and a mounting portion of the extrusion gun. From a hollow cylindrical heating cylinder to be placed, a heater member installed in the peripheral wall of the heating cylinder, and a connector receiving portion electrically connected to the heater member and provided on the outer surface of the heating cylinder. A heating gun that is characterized by: 3. A base, a heating gun accommodating portion provided on the base, and a connector of a power cord attached to the accommodating portion and connectable to the connector receiving portion of the heating cylinder. A heating device for heating a heating gun according to claim 2. 4. A base, a heating gun housing provided on the base, a connector of a power cord attached to the housing and connectable to a connector receiving portion of the heating cylinder, and the heating system. The heating device for heating a heating gun according to claim 2, further comprising: a nozzle accommodating portion connected to a tip of the gun accommodating portion, and a heating unit that heats the nozzle accommodating portion. 5. The heating type gun according to claim 2 is housed in the heating type gun housing part of the heating device according to claim 3 and the connector of the power cord is connected to the connector receiving part. A heating method characterized by heating the gun. 6. The heating gun according to claim 2 is housed in the heating gun housing part of the heating device according to claim 4, and a nozzle attached to the tip of the cartridge can is housed in the nozzle housing part. A heating system characterized in that the heating gun including the nozzle is heated by connecting a connector of the power cord to the connector receiving portion. 7. A heating system characterized in that the heating gun is heated by connecting a connector of a power cord to the connector receiving portion of the heating gun according to claim 2.