JP3153808B2 - Oven return roll device in code dip processing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a return roll device for an oven in a code dip processing machine, and more particularly, to easily remove a return roll to facilitate cleaning, and at the time of passing a cord and removing a return roll. The present invention relates to a return roll device of an oven in a code dip processor capable of always keeping the cords aligned and keeping the cord arrangement order correctly.

[0002]

2. Description of the Related Art Industrial belts for power transmission, such as V-belts, V-ribbed belts, and toothed belts, are made of a fiber material such as polyester fiber, aramid fiber, or glass fiber as a core wire as a tensile member. And the code is used. In order to enhance the adhesiveness with the rubber material, this cord is treated with RFL (resorcin formalin latex) only, or pre-treated with an epoxy or isocyanate compound, followed by RFL treatment, or rubber paste is adhered after RFL treatment. I was

[0003] The cord is continuously pulled out of the creel by a first driving roll of a cord dip processing machine, impregnated with an adhesive liquid in a first dip tank, sent to a first oven and heated and dried. After being cooled outside the oven and sent to the second driving roll, the first processing step is completed while applying a constant tension between the first driving roll and the second driving roll, and then the second, third and fourth processing rolls are further applied. The same processing steps as above are repeated, and the processing liquid is impregnated and adhered with different formulations for each step, and is heated and stretched under different oven temperature and tension conditions to give the belt optimal cord physical properties. It was wound on a reel and the dip processing was completed.

In this code dip processing machine, a rotatable return roll shaft is supported at the entrance and exit of the oven by a double-sided or cantilevered bracket, and the cord is wrapped around the return roll, so that the inside of the oven is rotated a plurality of times. The treatment liquid impregnated in the cord by reciprocating was heated and dried in an oven.

[0005]

However, in the conventional code dip processing machine, as the code dipping processing operation time elapses, a part of the solid component contained in the processing liquid is removed from the outer peripheral surface of the return roll. Therefore, the separation and cleaning were performed while the processing machine was stopped. However, if the return roll is mounted on the processing machine, the space inside the machine is narrow, and the cord is in the way, so that it is difficult to clean the portion, and it takes time for cleaning.

For this reason, it is conceivable to remove and clean the return roll, but it takes a long time to disassemble and take out the return roll with a bracket having a double-supported shaft. In addition, if the return roll shaft has a cantilever structure in order to simplify the removal of the return roll, the shaft diameter must be increased because it is necessary to suppress the bending of the shaft with respect to the cord tension. In addition, the size of the bearings of the return rolls also increased, causing an increase in the rotational friction of the return rolls. Furthermore, the rotational friction changes and increases with each pass of the cord in the oven, and heating and drying under a constant tension in the oven cannot be performed, thus impairing the cord properties.

In addition, when the cords are passed through and the return roll is removed, the arrangement of the cords is disturbed, so that it takes time and effort to maintain the cords in the correct order, and the knots of the cords can be passed smoothly and smoothly. It was difficult.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has been made in order to solve such a problem. The present invention aims to easily remove the return roll to facilitate cleaning and to reduce the rotational friction of the return roll. It is an object of the present invention to provide a return roll device of an oven in a code dip processing machine which can maintain the physical properties of the cords, align and retain the cords at the time of passing the cords and remove the return rolls, and always keep the cord alignment order correctly. I do.

[0009]

That is, according to the first aspect of the present invention, a cord used for a core wire of an industrial belt for power transmission or the like is wound around a dip roll accommodated in a dip tank and immersed in a processing solution. After that, in a code dip processing machine that performs heat treatment while repeatedly reciprocating in the oven by circulating around a return roll device disposed at the oven entrance and exit, the return roll device has at least a number of return rolls equal to or greater than the number of code turns. The shaft is rotatably supported in a skewered manner, and the shaft and the return roll fitted into the shaft are detachably mounted on a bracket installed at the entrance of the oven as an integral unit, and at least one cord separator pin is used to advance the cord. Attached and fixed alternately one by one in the middle of adjacent cords along the direction In return roll apparatus oven in Dodippu processor.

As described above, the return roll provided at the entrance of the oven can be easily removed from the processing machine, and the detachment and cleaning operations can be performed very easily. In addition, by arranging a plurality of pins for the code separator alternately in a staggered manner in the middle part of the adjacent cords along the traveling direction of the cords, the cords are aligned at the time of passing the cords and removing the return roll. This has the effect of always and correctly maintaining the code alignment order.

[0011]

The invention described in claim 2 of the present application is a return roll device of an oven in a cord dip processing machine in which a return roll rotatably supported on a shaft is integrally formed with a stop means, and the return roll is stopped. Since it is integrated with the shaft by a connecting means such as a ring, the detachment and cleaning work can be performed extremely easily.

According to a third aspect of the present invention, a bracket includes a stem portion provided in parallel with a shaft supporting a return roll, and an arm portion projecting from the stem portion and supporting both ends of the shaft. Moreover, in the return roll device of the oven in the code dip processing machine in which the stem portion is arranged at a position close to the oven side, the bracket is supported by both ends of the axis of the return roll, so that the shaft is compared with the cantilever structure. This makes it possible to reduce the rotational friction of the return roll by reducing the size of the bearing, thereby reducing the influence on the cord tension.
Further, even when the return roll has a double-ended shaft, in the present application, the stem is provided on the side closer to the oven than the return roll, so that it is possible to circulate to the return roll and return the cord when passing the cord. The roll can be easily removed without any hindrance.

[0014]

FIG. 1 is an overall view of a code dip processing apparatus according to the present invention, FIG. 2 is a plan partial sectional view of a return roll apparatus according to the present invention, FIG. 3 is a partially enlarged view of FIG. 4 is a view on arrow AA in FIG. 2. In the code dip processor 1 shown here, four zones including a first processing unit 2, a second processing unit 3, a third processing unit 4, and a fourth processing unit 5 are mounted on a common frame 6. Each processing unit has basically the same structure, and the mounting members are also the same.

The oven 7 (7a, 7b, 7) of each processing section
c, 7d) are of an indirect heating type in which they are arranged horizontally and forcedly circulate hot air. The heating air generated from the heater 8 for indirect heating arranged outside the oven 7 a is forced to flow in the oven 7 by a fan 9 for circulating hot air, and is circulated through a duct 14.
The oven 7 is provided with a door 11 on a side facing a cord passing work surface 35 (a side on which an operator passes a cord or checks a cord or a processing liquid). 12 and 13 are provided.
An operation panel 36 is installed in an inclined space on the entrance side of the ovens 7a and 7b. In addition, a temperature control device, a gas concentration detector, and an intake / exhaust duct (all not shown) can be provided.

The cord 10 to be treated is wound around a paper tube 16 supported by a creel stand 15 in an untreated white background. The cord 10 is pulled out at a constant speed by a first drive roll 17a having a speed control means, is given a slight preliminary tension by a friction tensioner 23 through a guide ring 21, and is passed through a guide roll 26 to a dip tank elevating means 27. It enters the installed dip device 20.

The dip device 20 comprises a dip tank 19 containing a processing liquid 18 automatically supplied from a processing liquid tank 28 and a dip roll 16 rotatably supported above the dip tank 19. A part is disposed so as to be immersed in the processing liquid 18 in the dip tank 19.

The cord 10 is immersed in the processing liquid 18 by making a half turn around the dip roll 16 in the dip tank 19,
The return roll device 12, which enters the oven 7a via the drive roll 17a and is disposed at the entrance of the oven 7a,
After being heated and dried by being reciprocated in a spiral shape several times between the sections 13, it is cooled in the atmosphere outside the oven 7 a, transferred to the second drive roll 17 b, and the first processing section 2 is completed. The second drive roll 17b has a speed control function based on the first drive roll 17a, and applies an optimal tension to the cord 10 in the first processing unit 2.

Hereinafter, similarly, the cord 10 is connected to the second drive row.
The second processing unit 3 between the third drive roll 17c having a speed control mechanism based on the rotation speed of the third drive roll 17c and the third drive roll 17c having a speed control mechanism based on the rotation speed thereof. The third processing unit 4 between the fourth drive roll 17d and finally the fourth processing unit 4 between the fourth drive roll 17d and the fifth drive roll 17e having a speed control mechanism based on its rotation speed.
In the processing unit 5, processing is performed under processing liquids (for example, pre-dip liquid, RFL liquid, and soaking liquid) having different compositions, heating and drying conditions (oven temperature, number of cord passes), and cord tension.

The cord 10 that has passed through the extraction roll 29 is
It is sent to the winder 31. In winder 31, code 1
0 is alternately wound on the take-up reel 32 via the two guide rolls 30, and the dip processing operation is continuously performed.

In the return roll devices 12 and 13, return rolls 33 each having a V-shaped groove for accommodating the cord 10 on the outer peripheral surface are arranged on a shaft 35 in a skewered manner at a fixed pitch via spacers 36 and 37. It is rotatably supported by a bearing 34, is integrally formed with a retaining means 38 such as a retaining ring, and is supported at both ends by a bracket 39 fixed to the frame 6 by bolts 45.

The bracket 39 comprises a stem portion 40 extending from the frame 6 in parallel with the shaft 35, an arm portion 41 integrated with the stem portion 40, and an arm portion 42 separate from the stem portion 40. The arm 40 and the arm 42 are positioned by two pins 44. Arm part 41,
42 is the shaft 3 so as to sandwich the return roll 33 in the middle.
5 are supported on both sides and fastened by one bolt 43. The bolt 43 has a rounded head with a knurled edge on the circumference of the head, and the knurled portion can be gripped by hand, or the horn can be rotated and detached with a wrench at the corner.

Thus, when removing the return roll 33, the bolt 43 is removed and the arm 42 is connected to the stem 40.
And the end of the shaft 35 escapes from the arm portion 41, and the cord 10 accommodates the return roll 33
By moving the roller toward the stem portion 40 until it is removed from the groove, the cleaning or the cleaned spare roll can be replaced. At this time, the cords 10 are held on the stem 40 in a state of being individually separated by the cord separator pins 46, and the arrangement is maintained. The attachment of the return roll 33 to the bracket 39 can be easily performed in the reverse procedure.

Also, when the cord 10 is newly passed, since the stem portion 40 is located on the side closer to the oven 7 than the return roll 33, it is necessary to support the work of reciprocating the cord 10 by reciprocating. There is no. The pinch roll 47 is a presser roll for preventing the cord 10 from being loosened and coming out of the groove of the return roll 33 during the cord passing operation, and an arm 53 that can swing with an actuator (not shown) such as an air cylinder. A roller 50 having a cushion layer 51 made of rubber, soft resin, or the like on its outer periphery is rotatably supported by a bearing 49 on a cantilever shaft 48 fastened to the shaft, and is stopped by a retaining ring 52. In addition, it is desirable that the contact with the return roll 33 should be opened except during the cord passing operation.

[0025]

According to the present invention, the return roll disposed at the entrance and exit of the oven is integrally formed with the shaft, and the bracket supporting the return roll is divided into two parts by removing one bolt. Can be easily removed from the machine without being restricted by the internal space of the processing machine.
Cleaning can be easily performed in a short time, and can be replaced with a spare roll that has been cleaned as necessary, so that it can be quickly mounted and restored. In addition, by arranging a plurality of pins for the code separator alternately in a staggered manner in the middle part of the adjacent cords along the traveling direction of the cords, the cords are aligned at the time of passing the cords and removing the return roll. By holding the cords, the cord arrangement order can be always kept correctly, and the knots of the cords can be passed smoothly without difficulty. Also,
Since the bracket supports the shaft of the return roll with both ends, not only can the bearing be miniaturized to reduce the rotational friction of the return roll, but also the influence on the cord tension can be controlled to be low.

[Brief description of the drawings]

FIG. 1 is an overall view of a code dip processor according to the present invention.

FIG. 2 is a plan partial sectional view of a return roll device according to the present invention.

FIG. 3 is a partially enlarged view of FIG. 2;

FIG. 4 is a view taken in the direction of arrows AA in FIG. 2;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Code dip processing machine 2 1st processing part 3 2nd processing part 4 3rd processing part 5 4th processing part 6 Frame 7 Oven 10 Code 12 Return roll device 13 Return roll device 33 Return roll 35 Shaft 38 Joining means 39 Bracket 40 stem part 41 arm part 42 arm part 46 pin for code separator

──────────────────────────────────────────────────続 き Continuation of the front page Examiner Noriyoshi Kikuchi (56) References JP-A-9-176930 (JP, A) JP-A-3-249260 (JP, A) JP-A-61-186589 (JP, A) JP-A-9-41238 (JP, A) JP-A-3-245866 (JP, A) JP-A-60-231859 (JP, A) JP-A-51-26383 (JP, A) (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) D06B 3/04 D07B 7/12 D02J 13/00

Claims (3)

(57) [Claims] 1. A cord used for a core of an industrial belt for power transmission or the like is wound around a dip roll accommodated in a dip tank, immersed in a treatment liquid, and then circulated around a return roll device arranged at an entrance and exit of the oven. In a code dip processing machine that heats while repeatedly reciprocating in an oven, the return roll device rotatably supports the return rolls in a skewered manner on at least a number of return rolls equal to the number of code turns. The detachable return roll fitted into the oven is detachably attached to the bracket installed at the entrance of the oven, and at least one pin for the cord separator is placed along the cord traveling direction and one at the middle of the adjacent cord. The cord dip processing machine is installed and fixed alternately in a zigzag pattern. Bun's return roll device. 2. A return roll device for an oven in a code dip processing machine according to claim 1, wherein a return roll rotatably supported on a shaft is integrally formed with a stop means. 3. A bracket comprising a stem portion disposed in parallel with a shaft supporting a return roll, and an arm portion projecting from the stem portion and supporting both ends of the shaft. 3. The return roll device of an oven in the code dip processing machine according to claim 1, wherein the return roll device is disposed at a position close to the oven.