JPH0635690B2 - Temperature control method in cord dip processor - Google Patents

Description

TECHNICAL FIELD The present invention relates to a temperature control method in a cord dip processing device.

(Prior Art) For example, for the cord (wire material) as the core of the belt,
There is known a code dip processing device that performs a dip processing in which an adhesive is attached to the surface of the cord in order to enhance the adhesiveness.

In such a cord dip processing device, the cord is passed through a dip tank means to be attached with an adhesive, and then passed through a heating / drying oven means to dry the adhesive attached to the surface of the cord.

(Problems to be Solved by the Invention) However, when the temperature of the oven of the heating / drying oven means is raised to a predetermined temperature, if the cord to be subjected to the dip treatment is, for example, a polyester cord, the temperature is raised with the feeding of the cord stopped. In that case, the polyester cord is located in the oven under the action of heat and tension, and there is a risk of cutting. Due to such a cord strength, it is impossible to raise the temperature by stopping the feeding of the cord and the cord must be fed at a low speed (about 2 m / min), which causes a cord loss during the temperature rise. Was there.

For example, the code loss is 2 m / min × 60 min = 120 m.

The present invention has been made in view of the above points, and an object thereof is to provide a temperature control method for a cord dip processing apparatus that eliminates cord loss when the temperature of the heating / drying oven means is raised.

(Means for Solving the Problem) The present invention is to apply the adhesive to a cord used for a core body of a belt or the like by passing through a dip tank means, and then passing through a heating / drying oven means to the surface of the cord. It is premised on a cord dip processing device for drying the adhered adhesive, and when raising the temperature of the heating and drying oven means, the cord located inside the heating and drying oven means is used for raising the temperature which does not change due to heat. The configuration is changed to code.

(Operation) When the temperature of the heating / drying oven means is raised, the cord located in the heating / drying oven means is changed to a raising code (for example, an aromatic polyamide cord) that does not change due to heat.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

A vertical dick processing apparatus (4 zones, to which the present invention is applied,
In FIG. 1 showing a schematic configuration of (slit jet method),
The dip processing device 1 is provided with a creel stand 3 shown in detail in FIGS. 2 and 3 below the inspection stand 2, and the first and second cheeses 4A rotatably supported by the creel stand 3. , 4B, which has been untreated by dipping, is configured to be dip-treated in the _{first to} fourth zones Z _{1 to} Z ₄ using three kinds of adhesives (dip treatment liquid). ing.

Then, the cord 5 which has been subjected to the dipping process has the first and second take-up bobbins coaxially arranged in parallel in the automatic take-up machine 6, as shown in FIG. 4 and FIG. 7
A and 7B are continuously wound.

In each of the zones Z _{1 to} Z ₄ , first to fourth dip tanks 11 to 14 for storing an adhesive are arranged below, and above each dip tank 11 to 14, each dip tank is arranged. Corresponding to 11-14, each dip tank 1
First to fourth ovens 15 to 18 which are long in the vertical direction and which dry and heat the cord 5 after the treatments 1 to 14 are provided.

The adhesives stored in the dip tanks 11 to 14 are, for example, isocyanate + toluene in the first dip tank 11 and RFL (resorcin / formalin / latex) / in the second and third dip tanks 12 and 13.
Water, glue rubber + toluene in the fourth dip tank 14.

Further, in the first to fourth ovens 15 to 18, the cord 5 is provided between the upper and lower grooved turn rolls 19 to 22 and 23 to 26.
Is wound multiple times to dry and heat the cord 5.

Further, with respect to the first to fourth ovens 15 to 18,
In order to cool the cord 5 heated in the ovens 15 to 18, adjacent to the advancing direction of the cord 5, that is, laterally,
A pair of rollers 27 to 30 and 31 to 34 are respectively arranged above and below, and both rollers 27 to 30 and 31 to 34 are arranged.
In the meantime, the dried and heated cord 5 is wound a plurality of times to be cooled to a predetermined temperature or lower.

Direct drive type first to fifth blowers 41 to 44 and first to fifth heaters 46 to 46 for supplying hot air to the respective ovens 15 to 18 are provided above the first to fourth ovens 15 to 18. In the lower part of the first to fourth ovens 15 to 18, the first to fourth ovens 15 to 50 are provided.
First to third blowers 51 to 5 for discharging exhaust from 18
3 are arranged adjacent to each other.

Further, on the front side of the first to third dip tanks 11, 12, 13 and on the rear side of the fourth zone Z _4, a cord is wound a plurality of times between two pull pulleys to generate tension in the cord 5. The fourth pull roll devices 61 to 64 are provided.

Furthermore, the first and second zones Z ₁ , Z ₂ , the second and third zones
Zones Z ₂ , Z ₃ and third and fourth zones Z ₃ , Z ₄
The first to third tension control devices 65 to 67 for keeping the tension of the cord 5 substantially constant are arranged between them.

The temperature control system of the dip processing device 1 is, for example, as shown in FIG.
Blowers 41 and 42 that are intake fans and a blower 51 that is an exhaust fan are connected to a power supply (not shown) via fan current detectors 110 and 111. Also, the heater 4
6, 47 are connected to the power source via the solid state contactor 112. First, second, and third thermocouples 113, 114, and 115 are arranged in this order from the upstream side in the oven 15, and the first thermocouple 112 is connected to the solid state contactor 112 via a temperature controller 116. . A thermostat 117 is arranged between the heat 46, 47 and the first thermocouple 113. Then, the controller 120 receives signals from the fan current detectors 110 and 111 and the second and third thermocouples 114 and 115, and blowers 41, 42, 51 and heaters 46, 47.
Is controlled.

The first zone Z ₁ has a heater capacity of 10 kw × 2 and no circulation, and the second zone Z ₂ has a heater capacity of 10 kw and 15 to 85%.
Circulation, the third zone Z ₃ is 15 to 85 with a heater capacity of 10 kw.
% Circulation, the fourth zone Z ₄ has no heater with a heater capacity of 10 kw.

As shown in FIG. 2 and FIG. 3, the creel stand 3 is configured so that the first and second cheeses 4A and 4B are vertically mounted via the fittings 71A and 71B so that their axes form an angle of about 40 °. It is supported on the shafts 72A and 72B. The end portion 5a of the cord 5 of the first cheese 4A and the tip portion 5b of the cord 5 of the second cheese 4B are connected to each other to form a joint portion 5c, and a limit switch 73 for detecting the joint portion with respect to the joint portion 5c. The contactor 73a of is connected to detect the passage of the joint portion 5c, and the joint detection signal F
Is output.

The tip 5d of the cord 5 of the first cheese 4A is supplied to the dip processing device 1 with a certain tension applied by a tensioner 75 attached to the upper portion of the guide member 74.

The automatic winder 6 is, as shown in FIG. 4 and FIG.
The traverse pulley 81, which is wound before the dip-processed cord 5 is wound on the hobbins 7A and 7B, is rotatably supported by the movable base 82.
It is movably screwed into a screw rod 83 extending along the axes of A and 7B. The screw rod 83 is rotatably driven by a stepping motor 84. When the screw rod 83 is rotated, the movable base 82, and hence the traverse pulley 81, causes the first winding bobbin 7A and the second winding bobbin 7B to rotate.
And the first winding bobbin 7
It is configured so that it can be changed from A to the second winding bobbin 7B or vice versa. Further, the movable table 82 has an engaging convex portion 86 that slidably engages with a fixed rail member 85 protruding rearward and extending parallel to the screw rod 83, so that the movable table 82 does not rotate due to the rotation of the screw rod 83. It has become.

Further, a limit switch 87 is provided between the first and second take-up bobbins 7A and 7B, and when the traverse pulley 81 moves from the first take-up bobbin 7A to the second take-up bobbin 7B or the same. When moving in the opposite direction, the contact 87a of the limit switch 87 is changed to notify the operator of which winding bobbin 7A, 7B the cord 5 is currently wound on. ing.

The first and second take-up bobbins 7A, 7B have flange portions 7a,
It has 7a, 7b, 7b, and is attached and fixed to the flanges 91a, 91b formed on the bobbin shafts 91A, 91B with screws 92, 92.

The bobbin shafts 91A, 91B have casings 93A, 9B.
The end is inserted into 3B and is rotatably supported.
A synchronous pulley on the driven side of the end portion (the number of teeth is 40, only the synchronous pulley 94 in the casing 93A is shown) is attached and fixed. The driven-side synchro pulley 94 has a driving-side synchro pulley 96 via a synchro belt 95.
Is associated with. The end portion of the pulley shaft 96a of the drive-side synchro pulley 96 has casings 93A and 93A.
It is inserted into another casing 97 located between B and rotatably supported via a bearing 98a, and its end can be connected to the clutch shaft 100 via the first clutch means 99A. The clutch shaft 100 is rotatably supported by two bearings 101a and 101b in the vicinity of a substantially central portion of the casing 97, and a driving means (not shown).
The synchro pulley 102 (the number of teeth is 60) linked to is fixedly attached. The first proximity switch 103 that detects one rotation of the clutch shaft 100 is
It is arranged near 0.

Similarly, the pulley shaft 104 can be connected to the opposite side of the clutch shaft 100 via another second clutch means 99B, and the driving force is transmitted to the second winding bobbin 7B by the same mechanism. Is configured.

In the vicinity of the screw rod 83, the second to fifth proximity switches 105A, 105B, 1 are provided corresponding to both ends of the bobbins 7A, 7B (near the flanges 7a, 7a, 7b, 7b).
05C and 105D are arranged to detect the position of the traverse pulley 81 and change the moving direction of the traverse pulley 81 (the feeding direction of the cord 5). That is, the second to fifth proximity switches 105A, 105
The signals from B, 105C and 105D are sent to the controller 11
0 and the controller 110 is winding the first winding bobbin 7A, for example, between the second and third proximity switches 105A and 105B (between the flange portions 7a and 7a).
The movement of the traverse pulley 81 is controlled by the control of the stepping motor 84 so that the cord 5 is wound up. At the same time, the controller 110 receives the joint detection signal F and automatically changes the winding of the cord 5 from one winding bobbin currently being wound to the other winding bobbin.

Reference numeral 106 denotes a cutter device that cuts around the joint portion 5c and separates the cord 5 wound around the first winding bobbin 7A from the cord 5 wound around the second winding bobbin 7B.

If constituted as described above, in the first zone Z ₁ , for example, the cord 5 before the dip treatment fed from the first cheese 4A is wound a plurality of times between the pull rolls of the first pull roll device 61, The tension is cut off, and then the upper and lower dip rolls in the dip tank 11 are wound a plurality of times to perform the first stage dip treatment.

Then, it is guided into the first oven 15 for drying and heating. In the first oven 15, the cord 5 is wound a plurality of times between the upper and lower turn rolls 19 and 23, and the adhesive is dried and stretched and heat set.

Then, the code 5 coming out of the oven 15 is
The tension is adjusted by the first tension control device 15, and then the rollers 27, 3 are cooled for cooling.
The cord 5 which has been wound multiple times in one time and whose temperature has risen due to drying and heating in the oven 15 is cooled to a predetermined temperature or less at which the physical properties of the cord are not changed.

After the cord is cooled, it passes through the second pull roll device 62 located between the first zone Z ₁ and the second zone Z ₂ to the second zone Z 1.
It reaches to ₂ .

Hereinafter, also in the second to fourth zones Z _{2 to} Z ₄ , the same operation is performed by changing the kind of the adhesive, and the cord 5 coming out of the fourth oven 18 is finally the automatic winder. The take-up bobbins 7A and 7B of No. 6 are taken up.

In this way, the dip processing is performed, but when the dip processing is finished, the end portion of the cord 5 to be finally processed is heated as the raw yarn used when the temperature is raised when the dip processing is restarted next time. The end portion of the aromatic polyamide cord (cheese winding) that is a temperature raising cord that does not change is jointed. Therefore, when the limit switch 73 for joint detection detects the passage of the joint between the cord 5 to be finally processed and the aromatic polyamide cord and is turned on after the dip processing is completed, the joint portion is automatically wound by the automatic winder 6. When the temperature reaches a predetermined temperature in the ovens 15-18, the blowers 41-44, 51-53 serving as intake and exhaust fans are stopped.

As a result, an aromatic polyamide cord that is a temperature raising cord that does not change due to heat is arranged in the ovens 15 to 18 in the stopped state, and when the temperature is raised to restart the next dip treatment, this aromatic polyamide cord is used. Since the temperature raising step is performed by using, the above-mentioned problems do not occur.

Next, regarding the temperature raising process of the code dip processing device 1, the flow of processing by the controller 120 will be described with reference to FIG. Although there are four ovens, the temperature raising process is the same.

When starting, it is first determined whether or not there is a temperature control start signal (step S1). If there is a temperature control start signal, blowers 41 to 44,5 which are intake and exhaust fans
1 to 53 is turned ON (step S2), while if not,
The determination in step S1 is repeated.

Following step S2, the fan current detectors 110, 11
1 is ON (step S3), and if the current detectors 110 and 111 are ON, the temperature adjustment process is started (step S4) while the current detectors 110 and 1 are started.
If 11 is not ON, blowers 41 to 44, 51 to 53
Is not operating, the current detectors 110 and 111 are O
The determination in step S3 is repeated until N is reached.

When the temperature control is started, it is determined whether there is an abnormality or a sudden stop (step S5), and if YES, the temperature control is stopped (step S6), and the thermocouples 113, 114, 1
It is judged from the signal from 15 whether the temperature in the oven 15 to 18 is lower than a certain temperature (step S7). If the temperature is lower than a certain temperature, the blowers 41 to 44, 51 which are intake and exhaust fans
~ 53 is stopped (step S8), and the process is ended, but if not lower than a certain temperature, the determination of step S7 is repeated.

On the other hand, if the determination in step S5 is NO, it is determined whether or not one hour has passed (step S9), and if the one hour has passed, whether the temperature in the ovens 15 to 18 is OK ( That is, it is determined whether or not the temperature is equal to or higher than a predetermined temperature (step S10), and if it is OK, a completion display of start-up of a lamp, a buzzer, etc. is displayed (step S11), and while it is finished, the lamp An alarm display such as a buzzer is displayed (step S12), and the process is terminated, and if 1 hour has not elapsed in the determination of step S9, step S12 is performed.
Return to 4.

Before this temperature adjustment process, the tip of the cord (for example, polyester cord) to be subjected to the next dip treatment is joined to the end of the aromatic polyamide cord, which is the cord for the temperature adjustment process, When the feeding of the cord is started after the end of the adjustment process, the joint section turns on the limit switch 73 for detecting the joint section, the aromatic polyamide cord is wound on one winding bobbin, and then the other winding bobbin is wound. The dip-processed cord will be wound up. The aromatic polyamide cord wound on the one bobbin is removed together with the winding bobbin and reused.

(Effects of the Invention) As described above, according to the present invention, when the temperature of the heating / drying oven means is raised, the code located in the heating / drying oven means is changed to a heating code that does not change due to heat. Therefore, it is possible to eliminate the cord loss when the temperature of the heating / drying oven means is raised.

[Brief description of drawings]

The drawings illustrate an embodiment of the present invention. FIG. 1 is a front view showing a schematic configuration of a vertical dip processing apparatus, FIGS. 2 and 3 are plan views and front views of a creel stand, and FIG. FIG. 5 is a plan view and a front view of the automatic winder, FIG. 6 is an explanatory view of the temperature control system in the first zone, and FIG. 7 is a flow chart showing a processing flow. 1 …… Dip treatment device 5 …… Code 11 to 14 …… Dip tank (dip tank means) 15 to 18 …… Oven (heat drying oven means) 120 …… Controller

Claims (1)

[Claims] 1. A cord used for a belt core or the like is passed through a dip tank means to adhere the adhesive, and then passed through a heating / drying oven means to dry the adhesive adhered to the surface of the cord. In the code dip processing device, when the temperature of the heating / drying oven means is raised, the code located in the heating / drying oven means is changed to a heating code that does not change due to heat. Temperature control method.