JPS6231141Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a multi-color switching marking device for performing multi-color switching marking by spraying a plurality of liquids while arbitrarily mixing them.

2. Description of the Related Art Marking guns that spray paint of any color in response to a marking signal to mark any location are well known. For example, see Utility Model Application No. 57-80776 filed by the same applicant.

Such a marking gun performs dot-like marking by momentarily pressurizing paint supplied from a supply port with an electromagnetically actuated plunger and spraying it from a nozzle. In order to perform marking with paints of different colors using such marking guns, it is necessary to prepare a number of guns corresponding to the desired number of colors or to change the paint each time.

Naturally, when a large number of guns are used, a corresponding number of paint systems and control signal systems are required, which is extremely disadvantageous in terms of required volume and cost. In addition, when different paints are used in a single gun, it takes a lot of time and effort to clean the paint system each time the paint is changed, and it is impossible to endure this frequently.

SUMMARY OF THE INVENTION An object of the present invention is to provide a multicolor switching type marking device that eliminates the above-mentioned drawbacks of conventional devices.

The object of the present invention is achieved by a multicolor switching type marking device having the structure described in the claims of the utility model registration.

The multi-color switching type marking device according to the present invention enables dot-shaped marking in any color. As a result, it becomes possible to mark grades, product types, etc. in the most appropriate colors on production lines or inspection lines. Furthermore, since the spray is ejected from a single nozzle, there is no misalignment of the mark. Naturally, the volume or floor space required is also reduced.

The present invention will now be described in detail with reference to the accompanying drawings, which illustrate embodiments.

FIG. 1 shows the main parts of a gun for monochrome paint, which is the basis of the marking device according to the present invention, and is composed of a drive device D, a gun body G, a cylinder/plunger assembly CP, and a nozzle assembly N. The paint supplied from the paint supply opening 1 is present in the cylinder extension 2. When the marking instruction signal is applied to the electromagnet 3 of the drive device D, the lever 4 is attracted and the plunger head 5 is rapidly moved in the direction of the arrow 6. By virtue of the sudden movement of the plunger head 5 against the spring 7, the plunger 8 pressurizes the paint in the cylinder extension 2. As a result, the paint is pressed in the direction of arrow 9, and is sprayed in the direction of arrow 14 from a nozzle 13 made of a small diameter metal tube through a paint reservoir 12 against a ball valve 11 that acts as a check valve by a spring 10. Ru.

FIG. 2a shows the nozzle assembly N of FIG. 1 taken out, and the main agent is pumped from the direction of arrow 9.
A small diameter metal tube 15 is attached to the side wall of the paint reservoir 12. At the other end of the small diameter tube 15 is a gun S for supplying an auxiliary agent.
are concatenated. The adjuvant supplying gun S has the same structure as the main part of the gun shown in FIG. That is, it has an adjuvant supply port 17, a cylinder 18, a plunger 19, a ball valve 20, and a spring 21, and the ball valve 20 and spring 21 are arranged in an adjuvant reservoir 22. Therefore, the metal small-diameter tube 15 connects the main agent (paint) reservoir 12 and the sub-agent reservoir 22 to the gun for paint, that is, the main agent.

A necessary number of such auxiliary agent supply guns S are arranged, and for example, as shown in FIG.
_-1 , 15 _-2 , 15 _-3 . . . The main agent reservoir 12 and the auxiliary agent reservoir 22 of each gun are connected to each other by small diameter metal pipes 15 _-1 , 15 _-2 , 15 _{-3 ,} etc. It has a stop valve so that an inoperative gun will not have any adverse effects.

The operation of the marking device according to the present invention will be explained below. When the device of the present invention is used as a multicolor switching type marking device, the main agent can be a white paint or a suitable solvent, and the auxiliary agent can be a coloring agent. In addition, adhesives and color vehicles compatible with different materials can be prepared as adjuncts and used selectively depending on the material to be marked. FIG. 3 is a block diagram showing the flow of paint in the multicolor switching type marking device. The nozzle assembly N of the main agent injection gun is marked with an arrow 2 from the left.
As shown in 3, the main ingredient is the cylinder plunger assembly.
It is pumped from CP _-0 . A base agent is supplied from a base agent container 24 to the cylinder plunger assembly CP _-0 by a pressure pump 25 through a pipe 26. Piping 27 is a main agent return pipe. Adjuvants such as colorants,
It is supplied from the container 28 via the pressure pump 29 and the piping 30 to the cylinder plunger assembly CP _-1 for the adjuvant, and is then forced into the main agent reservoir 12 of the nozzle assembly N through the small diameter metal pipe _15-1 . Piping 31 is a return pipe. A synthetic agent, which is a mixture of a main agent and a suitable adjuvant, is injected from the nozzle 13 in the direction of an arrow 32 in response to the operation of each selectively activated gun. To use a large number of adjuvants, a number of adjuvant supply guns are installed, and No. 2,
By connecting No. 3... with small diameter metal tubes 15 _-2 , 15 _-3 ,..., they can be used in appropriate combinations.

The marking signals for each gun are controlled to operate not only the main agent injection gun alone but also any combination of guns. Moreover, the mixing ratio of the main agent and the auxiliary agent can also be selected as appropriate. Furthermore, the gun can be kept in good operating condition by injecting only the main agent, for example, at the time of starting and at the end of the workday.
When activating a main agent by adding colorants, color vehicles, or other additives as adjuvants, or when activating only auxiliary agents alone or in combination, the activation signal applied to each gun must be complete. Requires synchronization. Those skilled in the art will be able to construct a control circuit that generates marking signals that meet such conditions, either singly or in appropriate combinations.

[Brief explanation of the drawing]

FIG. 1 is an explanatory view of the main parts of a gun for spraying monochrome paint. FIGS. 2a and 2b are a side view and a front view showing a manner in which an adjuvant supply gun is connected to a nozzle assembly of a main agent injection gun. FIG. 3 is a block diagram showing the paint system of the multicolor switching type marking device according to the present invention. The correspondence of the main reference symbols is as follows. G...
Gun body, D... Drive device, N... Nozzle assembly, CP... Cylinder plunger assembly, S...
Gun for supplying adjuncts.

Claims (1)

[Claims for Utility Model Registration] A main agent injection gun that injects a main agent in response to a marking instruction signal, and selectively in response to an auxiliary agent injection signal that is issued while maintaining necessary synchronization with the marking instruction signal or independently. and at least one adjuvant supply gun connected to the main agent reservoir in order to operate and supply an adjuvant to the main agent reservoir of the main agent injection gun. Type marking device.