JP3203304B2 - Liquid supply device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid supply device, and more particularly to a rubber paste used for bonding fiber cords and canvases used as materials for industrial belts and the like, that is, an adhesive liquid which solidifies and is easily deposited. A liquid supply device for supplying a liquid to a liquid tank storing the liquid so as to maintain the liquid at a substantially constant level.

[0002]

2. Description of the Related Art Conventionally, fiber cords and canvases used as materials for industrial belts and the like are made of rubber glue or synthetic resin liquid in order to enhance the adhesion to rubber or synthetic resin constituting the main body of the belt or the like. An immersion treatment for adhering the adhesive liquid has been performed. As a general method, a roll is accommodated in a liquid tank storing a processing liquid, and the fiber is wound around the roll to pass through the processing liquid. During the immersion treatment, the amount of the applied liquid varies due to liquid shortage and fluctuations in the liquid level, and in order to prevent the adhesiveness from being impaired, the treatment liquid is supplied to the liquid tank so as to maintain a substantially constant level. Frequent replenishment was required.

Therefore, a fixed service tank is installed, and at least two levels for detecting the upper and lower limits of the liquid level are provided in the liquid tank so that the processing liquid is automatically supplied from the service tank to the liquid tank. An automatic supply device equipped with a switch and a pipe having an automatic opening / closing valve that opens and closes in response to the signal was provided.

[0004]

In such a conventional automatic liquid supply apparatus, a solution containing a synthetic resin or rubber as a base material is used as a processing liquid. There is a problem that solidification occurs and accumulates on the wetted parts of the equipment used, causing malfunction of the level switch and malfunction of the automatic open / close valve that opens and closes frequently, and also requires a great deal of cleaning and maintenance work. . In addition, since a processing solution containing an organic solvent such as toluene is generally used as a solvent, explosion-proof equipment must be used for the level switch and automatic open / close valve for disaster prevention. It has many drawbacks, such as the increase in complexity, maintenance work, and equipment costs.

In recent years, in response to the needs for high-mix low-volume production, the number of processed products has been reduced, and the number of types of processing solutions and the number of switching setups have increased due to the increase in the number of processed products. With the increase in the number of supply devices, there has been a strong demand for improvement of the above-mentioned problems relating to this liquid supply device.

The present invention has been made in view of the above-mentioned situation, and is an improvement of the conventional problem. In this invention, the processing liquid in a liquid supply tank is automatically stored in a liquid tank without using a detection mechanism or a movable mechanism in a liquid contact part. By using a liquid supply tank that constantly supplies a constant amount and is detachable from the liquid tank, the liquid can be easily refilled and switched regardless of the length of the immersion processing time, and a stable immersion processing can always be performed. Easy handling,
It is intended to provide an inexpensive liquid supply device.

[0007]

That is, the present invention mainly relates to a dipping treatment for adhering an adhesive liquid such as a synthetic resin liquid or rubber paste to a fiber cord or canvas used as a material for an industrial belt or the like. A liquid supply device for supplying a liquid such as a liquid to a liquid tank so as to always maintain the liquid tank at a substantially constant level. Two liquid supply tanks for sealing the liquid inside the chamber, and the liquid supply tanks are positioned at right and left positions. a swing arm Ru suspended detachably, conduit and a liquid tank for containing the liquid flowing out of the conduit in each tank, and the swing earth for discharging the liquid in the tank
The liquid supply device has a swinging mechanism for rotating the drum in a seesaw shape using a pin as a support shaft .

The present invention also relates to a case where the liquid supply tank holds the packing between one of the upper and lower flanges at one end and is mechanically connected so as to be disassembled. When two of the on-off valves are connected to each other, and one of the on-off valves is provided with a conduit having a length that reaches the liquid level of the liquid tank, or at a position where the liquid supply tank of the swing arm is suspended. This includes the case where a means for measuring the weight of the tank is provided.

[0009]

According to the first aspect of the present invention, the liquid sealed in the chamber flows from the lower end of the chamber by its own weight through the conduit to the lower liquid tank. When the liquid level rises to reach the opening of the end of the conduit and shuts off the atmosphere, the discharge of the liquid is stopped by the holding action due to the negative pressure inside the chamber. When the processing liquid in the liquid tank is consumed, the liquid level falls and the opening comes into contact with the atmosphere again, the air passes through the conduit and the air enters the chamber, and the atmosphere enters the atmospheric pressure state, and the liquid flows into the liquid tank by its own weight. The liquid level is constantly maintained at a substantially constant height near the opening at the end of the conduit.

[0010] A liquid supply tank having a conduit at the lower end of the chamber is detachable and has the same shape.
Since the suspension is suspended on both sides of a swing arm that rotatably supports a certain angle range to the left and right with a pin, the amount of liquid in the chamber is reduced and the first liquid supply tank on the lighter side is a seesaw-shaped swing mechanism. And the supply is repeated until the liquid in the chamber becomes empty.

At this time, in the second liquid supply tank on the heavier side where the amount of liquid in the chamber is large, the opening of the conduit sinks below the liquid level by the swing allowance of the swing arm, and the supply of liquid is stopped. Although shut off, the supply of the liquid is automatically started when the first liquid supply tank is emptied and the liquid level drops below the opening of the conduit due to the consumption of the liquid. As described above, if the first liquid supply tank that has been emptied during the supply of the liquid from the second liquid supply tank is removed from the swing arm, the chamber is filled with the liquid, and suspended again on the swing arm. After the liquid has been consumed and the lightened second liquid supply tank moves upward in a certain section, the supply of the liquid is continued and the liquid supply tank is automatically emptied, and then automatically switched to the first liquid supply tank. Thus, the first and second liquid supply tanks have the function of continuously supplying the liquid to the liquid tanks alternately, and the continuous immersion treatment is performed without being strictly limited by the replacement time of the liquid supply tanks. I can do it.

When the liquid supply tank is switched, the height of the opening of the conduit moves and the liquid level fluctuates by the amount of the swing, but this swing allows the treatment liquid to adhere to the fibers in practice. It goes without saying that the amount is set to a minute amount so as not to affect the adhesive performance.

According to the second aspect of the present invention, an upper flange having an inner diameter substantially equal to the inner diameter of the main body and a lower flange having a blind plate shape are formed at the lower end of the chamber by a screw or the like with the packing interposed therebetween. By disassembling the flange, the interior of the chamber can be opened by disassembling the flange, and it is possible to easily check the liquid residue, solid matter, and clean all corners of the chamber. Become. Since this flange is located at the lower end of the body, after filling the chamber with the liquid, the flange is placed on the swing arm with the flange down, so that it can be very easily removed from the flange joint before use. This has the effect of checking the presence or absence of liquid leakage, that is, checking the sealing function of the chamber.

According to the third aspect of the present invention, since the blind plate-shaped lower flange has an opening / closing valve and a conduit reaching the liquid receiving level of the liquid tank, the liquid is supplied from the chamber to the liquid tank. When the valve is closed, the on / off valve is shut off to prevent the outflow of the liquid without fail, and by opening the on / off valve, the liquid is reliably supplied to the liquid tank and the liquid level reaches the opening at the end of the conduit. When it reaches, the outflow of liquid can be stopped automatically.

The lower flange is provided with an on-off valve that can communicate between the inside and the outside of the chamber separately from the conduit, so that the lower flange surface faces upward and liquid is injected and filled into the chamber from the end of the conduit. In this case, the on-off valve is opened to form an exhaust port, and the liquid can be smoothly and rapidly filled.

Further, according to the invention of claim 4, the means for measuring the weight of the liquid supply tank is provided in the suspension tank suspension portion on the left and right sides of the swing arm, so that the liquid amount inside the chamber can be constantly grasped. It is possible to minimize the preparation amount of the processing liquid, reduce the remaining amount of the liquid at the end of the processing, that is, reduce the amount of waste liquid, thereby improving the economy and suppressing the generation of industrial waste.

[0017]

FIG. 1 is an overall view of an adhesive processing machine using a liquid supply apparatus according to the present invention, and FIG. 2 is a dip apparatus shown in FIG.
Partial enlarged view of location, Figure 3 is sectional view taken along line X-X of Figure 2, and Figure 4 is a side view of FIG. Adhesion processing machine 50 shown here
Are the first processing unit 52, the second processing unit 53, and the third processing unit 5
Fourth and four zones up to the fourth processing unit 55 are mounted on the common frame 32. Each processing unit 52, 53, 5
4 and 55 have basically the same structure, and the mounting members are also the same.

The ovens 57 (57a, 57a) of each processing section
b, 57c, 57d) are of an indirect heating type in which they are arranged horizontally and forced hot air is circulated. The above oven 5
The heated air generated from the indirect heater 58 disposed outside the heater 7a is supplied to the oven 5 by the hot air circulating fan 59.
Forcibly flows inside 7 a and circulates through hot air duct 64. The oven has a door 61 on the side facing the cord passing work surface (the side on which the worker passes the cord and checks the cord and the processing liquid), and return rolls 62 and 63 are provided at the entrance and exit. I have. In addition, a temperature control device, a gas concentration detector, and an intake / exhaust duct (all not shown) can be provided.

The code 35 is a first code having a speed control device.
It is pulled out at a constant speed by the driving roll 67a, is given a slight tension by the friction tensioner 65 through the guide ring 68, and is passed from the detecting means for detecting the passage of the connecting portion between the code 35 and the leader code through the guide roll to the dip tank. It enters the dip device 70 installed in the elevating means 80.

The dipping device 70 includes a liquid supply device 90
And a dip tank lifting / lowering means 80. The cord 35 to which the liquid 20 is attached in the dipping device 70 is
After entering the oven 57a via the drive roll 67a, it is heated and dried by reciprocating several times between the return rolls 62 and 63, reaching the second drive roll 67b, and the processing of the first processing unit 52 is completed. Hereinafter, similarly, the second processing unit 53 to the fourth processing unit 5
The processing of 5 is finished. Subsequently, the cord 35 that has passed through the drawer roll is sent to the winder 75. In the winder 75, the cord 35 is alternately wound on a winding reel via two guide rolls, and the dip processing operation is continuously performed.

The liquid supply device 90 of the present invention comprises two liquid supply tanks 1 and 1a each having a liquid 20 sealed in a chamber, and a swing arm 21 which detachably suspends the liquid supply tanks 1 and 1a. A conduit 12 for discharging the liquid 20 from the tank, and a liquid tank 19 for storing the liquid 20 flowing out from the conduit 12 for each tank.
When the liquid 20 in one liquid supply tank becomes empty, the other liquid supply tank descends by its own weight.
0.

The liquid supply tank is composed of the first liquid supply tank 1 and the second liquid supply tank.
, Having the same shape, both being detachable and portable. The inverted U-shaped hook fitting 3 is attached to one end of the chamber 2 in which the liquid 20 is sealed, and the flange 6 is attached to the other end. Provided. At the center of the hook 3, a head screw 5 having a hemispherical projection and a head screw 5 is fastened with an eye nut 4 for positioning when the liquid supply tanks 1 and 1 a are mounted.

The flange 6 has an upper flange 7 having an opening whose inner diameter is substantially equal to the inner diameter of the body of the chamber 2, a socket 11 protruding through a packing 8 made of a rubber-like elastic body, and The lower flange 9 having a blind plate 16 is fastened with a screw N and can be disassembled. Therefore, when the flange portion 6 is disassembled and the chamber 2 is opened, the remaining residue and solid matter of the liquid 20 accumulated inside the chamber are opened. Inspection and cleaning becomes possible.

The conduit 12 is fitted into a socket 11 protruding from the lower flange 9 via an on-off valve 14 and is connected to the chamber 2.
The liquid 20 sealed therein can be reliably introduced into the liquid tank 19 arranged at the bottom.

The lower flange 9 has a single socket 16 into which an on-off valve 17 is fitted, and the inside and outside of the chamber 2 can be communicated and closed by operating the on-off valve 17. The opening and closing valves 14 and 17 are optimally formed of a known ball valve with a Teflon seal and a manual ball valve. The liquid supply tanks 1 and 1a are inserted into the mounting holes of the frame 32, and with the pin 23 fixed by the nut 24 as a fulcrum, the left and right ends of the swing arm 21 which rotates within a range of a fixed angle θ to the right and left are equally spaced. It is suspended on the tip of the hanging fitting 26 fastened by the screw 27.

A pedestal 28 having a pan-shaped concave surface is provided at the tip of the hanging metal fitting 26, and the liquid supply tanks 1 and 1a are provided.
The positioning is performed in combination with the hemispherical projection of the backing screw 5. Further, in order to correctly accommodate the conduits 12 of the liquid supply tanks 1 and 1a in the liquid tank 19, a screw 25 is attached to the swing arm 21.
The holding bracket 22 fastened at the step supports the body of the chamber 2.

The hanging fitting 26 also serves as a load measuring means incorporating a well-known strain resistance converter, and the liquid supply tanks 1 and 1a
By displaying the load on the indicator (not shown),
The weight of the liquid in the chamber can be known.

In the swing mechanism 10, a lock nut 31 provided on a seat plate 29 protruding from a frame 32 so that the swing arm 21 rotates from the horizontal position to the left and right by a small angle θ from the horizontal position with the pin 23 as a fulcrum, The gap 36 is set by the adjusting screws 30 and 30a with 31a. Liquid supply tank 1
And a liquid tank 19 disposed below 1a are rotatably mounted on the bearing 3.
The tip of the conduit 12 is housed together with a cord 35 wound around a dipping roll 34 supported by 3.

Thus, first, the liquid supply tanks 1 and 1a whose weights are empty are measured in advance and then removed from the swing arm 21, the conduit 12 is directed upward, and the levers 15 and 18 are manually opened to open and close. Open valves 14 and 17. The liquid supply tank 1 for initially using a predetermined amount of the liquid 20 through the opening 13
Into the chamber 2, the levers 15 and 18 are closed, the conduit 12 is turned down so that the conduit 12 faces downward, and it is confirmed that the liquid 20 has not leaked from the liquid contact portion including the flange portion 6 and the liquid supply tank. 1 is suspended at a fixed position of the swing arm 21.

When the weight of the liquid supply tank at that time is read and the lever 15 is opened to open the on-off valve 14, the liquid 20 travels down the conduit 12 and flows down to the liquid tank 19, and the liquid level rises to the opening 13. When it reaches, the liquid 20 stops and the code 35
The supply is automatically repeated as much as the liquid 20 in the liquid tank 19 has been consumed by the immersion processing, and at the same time, the weight state of the liquid supply tank 1 is displayed on the load indicator, and the liquid 20 in the chamber 2 is displayed.
You can grasp the remaining amount.

That is, swinging immediately after the liquid supply tank 1 is mounted.
The arm 21 is tilted by the swing angle θ,
As the liquid 20 in the 9 is used, the amount of the liquid is reduced.
The liquid supply tank 1 becomes lighter and the position of the opening 13 rises.
And the level of the liquid 20 in the liquid tank 19 rises
An immersion process is performed. The liquid supply tank 1a has a function of a spare tank. This is used together with the liquid supply tank 1 when the liquid amount in the liquid supply tank 1 becomes small . When a predetermined amount of the liquid 20 is sealed in the same procedure as that of the liquid supply tank 1 and suspended on the swing arm 21, the liquid supply tank 1a is heavier than the liquid supply tank 1, so that the swing arm 21 is rotated only by the swing angle θ. Reverse
To the opening 13 of the conduit 12 of the liquid supply tank 1a.
Is submerged in the liquid 20 in the liquid tank 19 . Even if the lever 15 is opened and the cock 14 is opened, the supply of the liquid 20 is kept in the cutoff state, and the supply is started after the liquid 20 in the liquid supply tank 1 becomes empty.

As described above, when the liquid supply tank 1 a is suspended on the swing arm 21, the liquid supply tank 1 is moved upward by an amount corresponding to the swing angle θ, and the level of the liquid 20 in the liquid tank 19 is increased. Rises, but the moving allowance for this fall and rise, ie, the liquid 20
Is actually 2 mm to 4 mm according to experiments.
And practically do not affect the bonding state of the fibers.

It should be noted that the liquid supply apparatus of the present invention is not only used for an adhesive processing machine but can be applied to other apparatuses.

[0034]

According to the present invention, the liquid in the chamber is discharged to the lower liquid tank by its own weight during the processing operation, but when the liquid level rises and reaches the opening of the conduit, the atmosphere is shut off. The discharge of the liquid is automatically stopped by the holding action by the negative pressure inside the chamber, and the liquid level is always kept substantially constant.Moreover, there is no mechanically movable part in the liquid contact part during operation, and the control system also has electricity. An extremely simple and inexpensive liquid supply device with little failure and high safety because it is not used can be provided.

Also, since a plurality of detachable supply tanks are alternately used, a fresh processing liquid is always supplied even when a long-life processing operation is performed using a liquid having a short service life, such as rubber glue, which is easily solidified. It is possible and there is no strict time constraint for switching the liquid supply tank. Then, the flange portion of the chamber is divided and opened, so that the inside, inspection, liquid residue, and solids can be cleaned.

Furthermore, since the weighing function is provided outside the liquid supply tank, there is no need to provide a level gauge or a viewing window in the liquid contact portion of the chamber, and it is easy to grasp the amount of liquid such as rubber paste, which is particularly easily contaminated. It has many effects, such as being able to be performed.

[Brief description of the drawings]

FIG. 1 is an overall view of an adhesion processing machine using a liquid supply device of the present invention.

FIG. 2 is a partially enlarged view of the dip device shown in FIG.

FIG. 3 is a sectional view taken along line XX of FIG. 2;

FIG. 4 is a side view of FIG. 2;

[Explanation of symbols]

 Reference Signs List 1 liquid supply tank 1a liquid supply tank 2 chamber 10 swing mechanism 12 conduit 19 liquid tank 20 liquid 21 swing arm 23 pin

────────────────────────────────────────────────── ─── Continuing from the front page Examiner Ruka Fuchino (56) References JP-U 3-74698 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) D06B 23/00

Claims (4)

(57) [Claims] 1. A liquid supply apparatus for supplying a liquid to a liquid tank so that the liquid is always maintained at a substantially constant level. Two liquid supply tanks for sealing the liquid in a chamber, and the liquid supply tanks are positioned at right and left positions. a swing arm Ru suspended detachably, a conduit for discharging the liquid in the tank, a liquid tank for containing the liquid flowing out of the conduit in each tank, and pins the swing arm
A liquid supply device comprising a swinging mechanism for turning in a seesaw shape as a support shaft . 2. The liquid supply device according to claim 1, wherein the liquid supply tank holds the packing at one end between an upper flange and a lower flange, and is mechanically connected so as to be disassembled. 3. The lower flange is provided with two on-off valves communicating between the inside and the outside of the chamber, and one of the on-off valves is provided with a conduit having a length reaching the liquid level of the liquid tank.
3. The liquid supply device according to 1 or 2 . 4. The liquid supply device according to claim 1, wherein a means for measuring the weight of the liquid supply tank is provided at a position where the liquid supply tank is suspended from the swing arm.