JP2001310143A - Two-pack mixing and coating machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a two-pack mixing and coating machine capable of automatically mixing a two-pack coating material at a fixed ratio as well as preventing a loss in coatings and a deterioration of the qualities of the coatings in the case air is included in the gear of a cylinder device. SOLUTION: This two-pack mixing and coating machine is provided with a major ingredient tank 1, a minor ingredient tank 2, a major ingredient cylinder device 3 which weighs the major ingredient from the major ingredient tank 1, a minor ingredient cylinder device 4 which weights the minor ingredient from the minor ingredient tank 2, a ratio variable mechanism 5 which adjusts the ratio of the supply amounts of the major ingredient and the minor ingredient at the cylinder devices 3 and 4, a hydraulic driving machine 20 to drive the ratio variable mechanism 5, a static mixer 18 which mixes the major ingredient weighed at the major ingredient cylinder device 3 with the minor ingredient weighed at the minor ingredient cylinder device 4, a spray gun 19 connected with the static mixer 18 and a weighing device 21 which measures the total weight of the major ingredient cylinder device 3, a curing agent cylinder and the ratio variable mechanism 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a two-part coating machine for mixing two-part coating materials such as an epoxy resin and a hardener at a predetermined ratio on site.

[0002]

2. Description of the Related Art In general, some paints, such as epoxy resin paints or urethane resin paints, are used by chemically reacting two liquids immediately before use. If these multi-part coating materials are mixed from the beginning, they harden in a short period of time. Therefore, it is required to mix them immediately before use.

For example, when applying a wide range such as a ship, mixing a large amount of paint every time at the site is labor-intensive and poorly planned. A two-component mixing coating machine that mixes at a ratio of 1 to 2 is provided on the market.

[0004]

In the conventional two-liquid mixing and coating machine which has been used, the volume of each resin material is measured, and the volume ratio is set to a predetermined value such as 1: 1 or 2: 1. Was weighed. However, in such a two-liquid mixing coating machine, when trying to measure the volume of the coating material with each cylinder device, in some cases, air is entrained during the measurement and the appropriate volume is not reached. It can be mixed,
As a result, there has been a problem that the two liquids are not mixed at a predetermined ratio. If such a defect occurs, if it is not immediately confirmed, the painted surface will be painted with a different mixture ratio, resulting in paint loss or unstable paint quality. There was a problem that would.

In view of such circumstances, the present invention automatically mixes two-component paints at a predetermined ratio, and when air entrapment occurs in a cylinder device, immediately judges the entrapment and stops the operation. It is an object of the present invention to provide a two-part mixed coating machine capable of performing the above-mentioned operations.

[0006]

According to the present invention, there is provided a paint mixing apparatus for achieving the above-mentioned object, by mixing raw paints of a main agent and an auxiliary agent, which are stored independently, at a predetermined ratio and removing the same. In the liquid mixing coating machine, a main agent tank for storing a main agent, a sub agent tank for storing an auxiliary agent, a main agent cylinder device for measuring the main agent from the main agent tank, and an auxiliary agent from the auxiliary agent tank. An auxiliary agent cylinder device for measuring an agent, a variable ratio mechanism for adjusting a supply amount ratio between the main agent and the auxiliary agent in these cylinder devices, a hydraulic drive device for driving the variable ratio mechanism, and the main agent A static mixer for mixing the main agent measured by the cylinder device for the auxiliary agent and the auxiliary agent measured by the auxiliary agent cylinder device, a spray gun connected to the static mixer, Linder and the curing agent for the cylinder, and is characterized by comprising a weighing device for measuring the total weight of said ratio variable mechanism.

Here, the two-liquid mixing / coating machine according to the present invention may be provided with a measuring control device for judging that the total weight measured by the measuring device has fluctuated by a predetermined value or more. preferable. 2 having such a configuration
According to the liquid mixing coating machine, the two types of raw material coating materials can be automatically and promptly mixed at a predetermined ratio, and when air crushing occurs in the cylinder device,
Since the decrease in the total weight occurs, it is possible to determine the occurrence of air squeezing, and thus the coating can be stopped immediately.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a two-liquid mixing coating machine according to one embodiment of the present invention. Here, the main agent of the raw material coating agent is, for example, an epoxy resin, and the auxiliary agent is a curing agent such as an amine. These are the main agent tank 1
And the auxiliary agent tank 2 are separately stored.

On the output side of the tank 1 for the main agent and the tank 2 for the auxiliary agent, a cylinder device 3 and a cylinder device 4 for the auxiliary agent are provided, respectively. It is configured to be driven simultaneously by the mechanism 5. That is, the rod 7 of the cylinder device 3 for the main agent and the rod 8 of the cylinder device 4 for the auxiliary agent are supported by the common bar 6 of the variable ratio mechanism 5, respectively, and are freely bendable connected to the substantially middle portion of the common bar 6. These rods 7 and 8
Are configured to alternately move up and down. Therefore, the main agent can be sucked from the main agent tank 1 via the pipe 12 when the rod 7 rises, and the hardener can be sucked from the auxiliary agent tank 2 via the pipe 13 when the rod 8 rises. ing. Further, in the variable ratio mechanism 5, by appropriately adjusting the balancer 9, the mixing ratio depending on the volume of the main agent and the curing agent can be adjusted to an appropriate ratio.

The epoxy resin measured by the main agent cylinder device 3 and the amine resin measured by the auxiliary agent cylinder device 4 are then supplied to pipes 14 and 15, connecting joints 16 and 17, and a static mixer 18. It has become. The static mixer 18 incorporates elements that are vertically and horizontally partitioned, and by passing such elements, it is possible to guide the flow of the central part to the peripheral part and the flow of the peripheral part to the central part, Thereby, the sent liquid can be swirled and dispersed and mixed.

Therefore, in this coating machine, the resin sent from each of the cylinder devices 3 and 4 can be quickly mixed in the static mixer 18. Therefore, by operating the spray gun 19, it is possible to continuously discharge a two-liquid mixed paint that is mixed substantially uniformly at a predetermined ratio in volume ratio. Here, the ratio variable mechanism 5 is driven and controlled by the hydraulic cylinder of the hydraulic drive device 20, so that more stable control can be performed. The cylinder device 3 for the main agent, the cylinder device 4 for the auxiliary agent, the variable ratio mechanism 5 and the hydraulic drive device 20 are set on a load cell measuring device 21 so that their total weight can be measured. I have. Therefore, in the coating machine according to the present embodiment, the weight of the coating material in the cylinder can be measured by comparing the amounts of the main agent and the auxiliary agent at the upper starting point and the lower starting point of the hydraulic drive device 20 with the tare. Therefore, in the coating machine of the present embodiment, it is possible to check whether the mixing ratio by volume is an appropriate ratio by its weight. Further, since the measured value of the total weight can be electrically identified through the weighing control panel 22, it can be automatically determined by an alarm or the like.

In FIG. 1, reference numerals 23 and 24 denote hydraulic solenoid valves for operating the cylinder of the hydraulic drive unit 20 from one side to the other or from the other side to one side, and reference numeral 25 denotes a hydraulic drive unit 20. 1 shows a hydraulic pump for operating the cylinder of FIG. The two-component mixing coating machine according to the present invention is configured as described above, and its operation will be described below.

First, the main agent tank 1 is filled with an epoxy resin, and the auxiliary agent tank 2 is filled with a curing agent amine. The mixing ratio of the epoxy resin and the amine by volume is set to, for example, 1: 1 by the ratio variable mechanism 5, and the position of the balance bar 9 is adjusted based on this ratio. Furthermore, when the cylinder of the hydraulic drive device 20 is located at, for example, an intermediate position from the upper starting point to the lower starting point, in response to this, the total weight of the sucked resin is calculated in advance. The value has been input to the weighing control panel 22.

Therefore, by measuring the total weight at that time, it can be determined whether or not the two liquids are mixed in a correct ratio in weight ratio. On the other hand, when the total weight is not within a certain frame, it can be determined that the two liquids are not mixed at the correct ratio. Therefore, when there is such an error, it is possible to judge that air is trapped in at least one of the cylinder devices 3 or 4 and that the amount of resin is insufficient. In that case, an alarm can be sounded based on a signal from the weighing control panel 22 or an indicator lamp can be turned on to notify an abnormal situation. Therefore, at that time, the operator can determine that the air has been trapped and stop driving the coating machine. Therefore, the paints having different mixing ratios are not continuously applied to the surface to be coated.

As described above, the two-liquid mixing coating machine according to one embodiment of the present invention has been described, but the present invention is not limited to the above-described embodiment. For example, the main agent and the auxiliary agent are epoxy resin,
It is not limited to an amine resin at all. Further, the present invention has been described with respect to a two-liquid mixing coating apparatus, but it is of course applicable to multi-liquid mixing of three or more liquids.

[0016]

As described above, according to the present invention,
In the liquid mixing device, when air entrapment occurs, the total weight of the resin is lighter than the weight of the preset mixing ratio, so that it is possible to immediately determine that there is air entrapment. . Therefore, the work can be stopped at this point, so that the painting loss can be suppressed and the quality control of the painted surface can be performed.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing a system of a two-liquid mixing apparatus according to one embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main agent tank 2 Secondary agent tank 3 Main agent cylinder device 4 Secondary agent cylinder device 5 Ratio variable mechanism 18 Static mixer 19 Spray gun 20 Hydraulic drive device 21 Load cell measuring device

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Izumi Nihongi, 19 Natsushima-cho, Yokosuka City, Kanagawa Prefecture F-term in the Yokosuka Factory of Sumitomo Heavy Industries, Ltd.F-term (reference) 4F042 BA02 BA16 CA01 CB02 CB19 CB27

Claims (2)

[Claims] 1. A two-component mixing coating machine for mixing and taking out raw material paints of a main agent and an auxiliary agent stored independently at a predetermined ratio, a main agent tank for storing the main agent, and an auxiliary agent. An auxiliary agent tank, a main agent cylinder device for measuring the main agent from the main agent tank, an auxiliary agent cylinder device for measuring the auxiliary agent from the auxiliary agent tank, and a main agent and an auxiliary agent for these cylinder devices. A variable ratio mechanism for adjusting the supply amount ratio of the agent, a hydraulic drive device for driving the variable ratio mechanism, a main agent measured by the main agent cylinder device, and a sub agent measured by the auxiliary agent cylinder device. A static mixer for mixing the agent, a spray gun connected to the static mixer, the main agent cylinder and the curing agent cylinder,
And a weighing device for measuring the total weight of the ratio variable mechanism. 2. The two-component liquid according to claim 1, further comprising a weighing control device for judging that the total weight measured by the weighing device has changed by a predetermined value or more. Mixed coating machine.