JPH0942U - Gun for extruding pasty material - Google Patents

Abstract

(57) Abstract: A gun for extruding a paste-like substance, having a gun body with a gun grip, the gun body having a hollow cylinder for the substance to be extruded. , A piston is movable in the hollow cylinder, the piston can be loaded with a releaseable force via a trigger in the gun grip using a mechanically or valve-controlled pressure medium, In the type in which the nozzle for extruding the substance is arranged at one end, the inner chamber of the hollow cylinder can be inspected in a simple manner, and
Prevent the fragments of the hollow cylinder from scattering when the hollow cylinder is damaged. SOLUTION: At least the wall of the hollow cylinder (12) is made of a transparent material, and the hollow cylinder (12) is tightly wrapped with a transparent plastic hose (54).

Description

[Detailed description of the device]

[0001]

[Technical field to which the invention belongs]

 The present invention is a gun for extruding a pasty substance, which has a gun body with a gun grip, the gun body having a hollow cylinder for the substance to be extruded, The piston is movable and can be loaded with a releasable force through a trigger on the gun grip using a mechanically or valve controlled pressure medium, such that the substance at one end of the gun body It relates to the type in which the nozzles to be extruded are arranged.

[0002]

[Prior art]

 Guns of the type described above, for example as disclosed in US-PS 2818999, are used for extruding substances or delivering sealing materials. The shape of the material emerging from the nozzle is related to the nozzle configuration, the pressure in the casing acting on the extruded material, and the agglomeration of each material. The force exerted on the pistons is applied by hand in a simple device via a shaft or, in relatively expensive devices, by a pressure medium supplied by a pressure source and controlled by a valve.

In guns of the type mentioned above, the filling status in the cylinder is checked, possibly indirectly, by means of a shaft which projects from the cylinder and is manually actuated. However, when the piston is actuated pneumatically or hydraulically, the filling degree of the substance in the cylinder cannot be verified from the outside. If the device is left partially filled for a long time, the type of material in the cylinder cannot be confirmed without opening the cylinder and removing the piston.

[0004]

[Issues of the invention]

 The object of the present invention is to improve the gun of the type described at the beginning so that the inner chamber of the hollow cylinder can be inspected in a simple manner, and the fragments of the hollow cylinder do not scatter when the hollow cylinder is broken. To do so. Furthermore, it is also an object of the present invention to protect the hollow cylinder from harmful external effects on the hollow cylinder.

[0005]

[Means for Solving the Problems]

 The object of the invention was solved in a gun of the type mentioned at the beginning by at least the wall of the hollow cylinder being made of a transparent material and the hollow cylinder being tightly wrapped in a transparent plastic hose.

[0006]

[Effect of the invention]

 The colorless or transparent material allows the interior of the hollow cylinder to be seen from the outside, which offers numerous advantages. Since the amount of the substance in the hollow cylinder can be confirmed, in some cases the substance can be replenished in a timely manner even when the substance still remains. In this way, breaks in the material extruded from the nozzle, for example, can be avoided. This is particularly advantageous if the extruded substance is a sealing material. Furthermore, the color of the substance in the hollow cylinder can be confirmed. Also, the manufacturer's name or mark or indicia on which the substance is displayed on the seat tube can be seen when using the gun. This can have an advertising effect. Since the work status can be monitored from the outside, piston wear or piston lock can be easily confirmed.

Some plastic hoses ensure that if the hollow cylinder breaks, for example if the gun falls and the hollow cylinder breaks, the fragments of the hollow cylinder will not scatter. The broken hollow cylinder can therefore be removed without problems. In addition, the plastic hose prevents the hollow cylinder from being scratched and the hollow cylinder from being exposed to chemicals such as solvents.

Weight can be reduced by selecting colorless polyamide as the cylinder material.

A shrink fit hose can be used as the plastic hose.

It is also possible to provide a thread on the end face of the hollow cylinder and screw a cap nut holding the nozzle or the valve element onto the thread.

[0011]

【Example】

 The drawing shows a gun for continuously extruding the material on the paste, for example filling the sealing gap. The gun body 10 has a hollow cylinder 12, and male threads 14 are provided on both end surfaces of the hollow cylinder 12. The hollow cylinder 12 is made of a transparent, preferably colorless material. Polyamide can be used as the material. A piston 16 is slidably arranged in the hollow cylinder 12. A cap nut 24 can be screwed onto the front end surface of the hollow cylinder 12. The nozzle 22 is held by the cap nut 24. Instead of the nozzle, a nozzle holder can be attached with a seal interposed. This nozzle holder allows the use of commercially available plastic nozzles of about 310 ml cartridge. This arrangement is particularly advantageous and is represented by the part shown below the nozzle 22.

The piston 16 is preferably connected to the closure cap 40 by means of a string 26 which can be released on both sides. The piston 16 can be crimped to the rear end face of the hollow cylinder 12 via a seal member 30. A quick exhaust valve can be connected to the closure cap. This quick exhaust valve has a connection for a hose 36 and the hose conduit extends towards the gang grip. Releasable connections between the piston and the lace and between the lace and the closure cap are highly advantageous as this helps achieve the advantage that the entire device consists of parts which are easy to service and replace. .

A clamp ring 42 is arranged substantially in the center of the gun body 10. The clamp ring is fixedly connected to the gun grip 38. The gun grip 38 is fixed to the gun body 10 in this manner. The gun grip 38 has a compressed air valve 46 associated with the trigger 44. The compressed air valve 46 is connected to a connecting portion 50 via a hole 48, and a hose 52 extending toward a compressed air source (not shown) is connected to the connecting portion 50.

The hollow cylinder 12 contains the substance, which is preferably wrapped in a sheet tube, to be extruded via the nozzle 22. The piston 16 must be in the rear position when containing a substance.

When the compressed air valve 46 is opened by actuating the trigger 44, the compressed air flows from a compressed air source (not shown) through the compressed air valve 46, the hose 36 and the quick exhaust valve and the closing cap 40. It flows into the working chamber in front of the piston 16 and presses it against the substance filled in the hollow cylinder 12. Material is extruded from the hollow cylinder through an opening in the nozzle 22.

The filling state of the substance in the hollow cylinder 12 and the movement of the piston 16 can be confirmed from the outside because the hollow cylinder 12 is transparent. This also confirms whether the piston 16 is still working satisfactorily or, as a result of wear, the substance is no longer correctly conveyed at the edge of the piston. In addition, the transparency of the sheet tube also confirms the color, type or manufacturer of the substance. The manufacturer can see by printing on the seat tube housed in the hollow cylinder, so that there is some advertising effect both when the device is ready for use and while it is in use. Can be expected.

The other parts of the device shown in the drawing are also preferably made of plastic, for example polyamide. The nozzle 22 is advantageously made of transparent plastic.

In order to prevent the hollow cylinder 12 from scattering when the hollow cylinder 12 is broken as a result of careless handling, for example, dropping the gun, the hollow cylinder 12 is provided with a transparent plastic hose 54. It is wrapped. Even through this plastic hose 54, the inner chamber of the hollow cylinder 12 can be visually inspected.

The plastic hose 54 can be a shrink fit hose.

Instead of the pneumatically actuated piston shown, it is also possible to use a piston which is actuated via a mechanical device by triggering the gun grip.

[Brief description of drawings]

FIG. 1 is a side view of a gun according to the present invention.

[Explanation of symbols]

10 Gun Body, 12 Hollow Cylinder, 14 Male Screw, 16 Piston, 22 Nozzle, 24 Cap Nut, 26 String, 30 Seal Member, 36
Hose, 38 gun grip, 40 closure cap, 42 clamp ring, 44 trigger, 46
Compressed air valve, 48 holes, 50 connection part, 52
Hose, 54 plastic hose

Claims (6)

[Utility model registration claims] 1. A gun for extruding a pasty substance, comprising a gun body with a gun grip, the gun body having a hollow cylinder for the substance to be extruded,
A piston is movable in the hollow cylinder, the piston using a mechanically or valve controlled pressure medium,
In a type in which a nozzle for ejecting the substance is arranged at one end of a gun body, which can be loaded with a release force through a trigger provided in a gun grip, at least a wall of a hollow cylinder (12) is transparent. Made of various materials,
The hollow cylinder (12) has a transparent plastic hose (5
Gun for extruding pasty substances, characterized in that it is tightly wrapped in 4). 2. The gun according to claim 1, wherein the hollow cylinder (12) is made of colorless polyamide. 3. The gun of claim 1, wherein the plastic hose (54) is a shrink fit hose. 4. The gun according to claim 1, wherein the hollow cylinder (12) is provided with external threads (14) in the area of the end face. 5. A cap nut (2) is attached to the gun body (10).
A gun according to any one of claims 1 to 4, wherein the nozzle (22) fixed by means of 4) is made of a translucent material. 6. A gun according to claim 1, wherein the cap nut (24) is provided with a nozzle holder having a thread on which a nozzle of the desired size can be screwed.