JP3210514B2 - High speed winding method and apparatus for cylindrical honeycomb core - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a winding device for a cylindrical honeycomb core used for an automobile catalytic converter carrier and the like, and more particularly to a winding device for increasing the winding speed.

[0002]

2. Description of the Related Art Cylindrical honeycomb cores of this type are usually
A flat foil and corrugated foil are overlapped and spirally wound and formed into a cylindrical shape, and a honeycomb core of appropriate size is inserted and fixed in a metal outer cylinder to make a honeycomb structure. Is provided as a metal carrier for an actual automotive catalytic converter.

Various devices have been proposed for manufacturing such a cylindrical honeycomb core. For example, Japanese Patent Application Laid-Open No. 62-254936 and Japanese Patent Application Laid-Open No. 2-24
Japanese Patent Application No. 1614, Japanese Patent Application No. 3-144440, and the like are known. However, in the conventional method and apparatus for manufacturing a honeycomb core, particularly in the method and apparatus for winding a core, emphasis is placed on the supply of flat foils and corrugated foils and the smoothness of the overlapping winding operation, and the high speed of the entire manufacturing process is high. Almost no proposals have been made with the aim of reducing the time (reducing the winding cycle time).

[0004]

In the ordinary honeycomb core winding operation, a process shown in FIG. 1B is performed. That is, the flat foil 2 is horizontally sandwiched between the winding shaft 1 and the winding shaft 1 is
After rotating by 80 °, the corrugated foil 3 is sandwiched and advanced by the clamp 5 and inserted between the flat foil 2 and the winding shaft 1, and the pressing roll 4 is moved to press the corrugated foil 2 and the corrugated foil 3. In this state, the winding shaft is operated two to three turns to wind both foils, the pressure roll 4 is retracted, and the end face of the core is lightly pressed.
The pressing roll is advanced again to press both foils, and winding is performed in a state where the foil does not come off the winding shaft. In this step, the corrugated foil 3 is inserted between the flat foil 2 and the winding shaft 1 so that the corrugated foil 3 can be wrapped well, and the pressure roll 4 is further raised to hold down the corrugated foil and the corrugated foil. However, there is a problem that the number of steps is large and the operation is temporarily stopped when the corrugated foil is inserted to perform an intermittent operation, so that the manufacturing cycle is lengthened.

The present invention has been made in view of the current state of such a winding operation of a honeycomb core, and aims at shortening the winding cycle time, thereby improving the productivity of the honeycomb core. An object of the present invention is to provide a winding device capable of suitably performing this method.

[0006]

According to a method for winding a honeycomb core of the present invention, a flat foil tip continuously supplied is sandwiched between winding shafts, and then the winding shaft is rotated and then continuously. The leading end of the supplied corrugated foil is inserted between the flat foil and the winding shaft, and then the winding shaft is rotated, the flat foil and the corrugated foil are superimposed, spirally wound, and wound on a cylindrical honeycomb core. In the removal method, when the flat foil tip is sandwiched between the winding shaft, the pressing roll is advanced to press the flat foil against the winding shaft to rotate the winding shaft at low speed, and at the same time, the corrugated foil is advanced to flatten the tip. Push in the state that it bends between the foil and the take-up shaft, rotate the take-up shaft one turn, release the corrugated foil clamp, co-wind the flat foil and the corrugated foil, and lightly press the end faces of both rolled foil materials It is characterized by winding up at a high speed.

Further, the winding device of the present invention comprises: a device for continuously supplying a flat foil and a corrugated foil; a winding shaft for rotating the flat foil tip with the corrugated foil to wind both foils; In a winding device for a cylindrical honeycomb core comprising a pressure roll provided to be able to move forward and backward with respect to a take-up shaft, two sets of the same structure of the take-up shaft and its holding drive unit are arranged, and these are shifted by one. It is characterized in that one of the winding shafts can be set at a predetermined winding position by being loaded on a truck.

[0008]

The basic steps of the winding method according to the present invention are shown in order. As shown in FIG. 1 (a), a flat foil 2 is horizontally sandwiched between a winding shaft 1 and a pressure roll 4 is advanced. While the take-up shaft 1 is rotated at a low speed, the corrugated foil 3 is sent out and pushed between the flat foil 2 and the take-up shaft 1. In this case, the corrugated foil 3 is pushed to the extent that it is bent (L in the figure is the clamp 5 and the take-up shaft). Distance between 1, α
Is the amount of deflection). The winding shaft 1 is rotated once to open the corrugated foil clamp 5, and the core end surface is lightly pressed while rotating the winding shaft 1 to perform high-speed winding with both foils not falling out of the winding shaft. I do.

In the present invention, while the winding shaft is being rotated at a low speed with the flat foil tip interposed therebetween, the corrugated foil is deflected and pushed between the flat foil and the winding shaft, and at the first rotation of the winding shaft. The corrugated foil clamp is opened, and if it does not come off the shaft, high-speed winding is started immediately. Thus, in the present invention, unlike the conventional intermittent operation, all operations are continuous, and the steady winding speed is also faster than that of the conventional one, thereby shortening the overall cycle time.

When the winding of one honeycomb core is completed by the shift mechanism of the winding section of the present invention, the core is shifted in the axial direction, and the post-winding processing (core end end) is performed at the shifted position. From welding to core dispensing)
On the other hand, a new winding shaft is set at the position before the shift, and the next winding operation has already been started. This shift mechanism also contributes to shortening of the cycle time.

[0011]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an example of the apparatus according to the present invention for carrying out the winding method of the present invention. FIG. 2 is an overall device showing each mechanism from the sending out of flat foil and corrugated foil to the overlapping winding thereof, and FIG. 3 is a detailed view of the winding section in FIG.

In FIG. 2, the winding shaft 1 is held by a flat foil bender / winding shaft insertion guide 6, and three press rolls 4 are arranged at equal intervals around the winding shaft 1 and are controlled by a cylinder. It is configured to be able to move back and forth in the radial direction. The flat foil 2 and the corrugated foil 3 sent from the flat foil payoff reel 7 and the corrugated foil payoff reel 8 are supplied to the winding shaft 1.
In the figure, 9 is a cut shear that cuts both foils when wound to a predetermined outer peripheral length, 10 is a flat foil clamp that can move forward and backward to guide the flat foil to the winding position, and 11 is A corrugated foil clamp that can be moved back and forth arranged along the corrugated foil supply line, 12 is a pad for preventing the outermost circumference of the core from being loosened at the end of winding, and 13 is a spot welding machine for fixing the core at the end of winding. .

Further, as shown in FIG.
A plurality of guide rolls are appropriately arranged on the supply line from the reel. The guide rolls 14 arranged in the line of the corrugated foil 3 are formed in a gear shape according to the shape of the corrugated foil. However, if the speed is increased to the corrugated paper conveying speed (approximately 40 m / min, approximately 20 m / min in the past) which is expected by the present invention, tooth jump of the guide roll may occur, so that the speed is increased. The gear shape of the roll is changed to be able to cope. That is, as shown in FIG.
The width of one tooth is made slightly thinner than the conventional one (shaded portions are cut). When the wave pitch is increased and the wave pitch is slightly widened and tooth skipping is likely to occur, the tooth width of the guide roll is slightly reduced in this way, so that the corrugated foil and the guide roll can be reliably engaged. And tooth skipping does not occur.

Next, the shift mechanism of the winding section in the apparatus shown in FIG. 2 will be described with reference to FIG. A shift carriage 15 equipped with two sets of winding mechanisms including a winding shaft, a driving unit thereof, a core pressing unit, and the like can be moved (shifted) on a guide 17 in a winding axis direction by a bogie shift cylinder 16. When the winding of one core is completed, the cylinder 16 is operated to retract the winding mechanism at the winding position, and at the same time, move the empty winding mechanism. Since the two winding mechanisms have the same structure and are symmetrically arranged as shown in the drawing, only one will be described for convenience.

The take-up shaft 1, which is divided into two parts so that a flat plate can be sandwiched, has one end attached to a slide unit 18 and is slidable in the axial direction by operation of the unit. The drive unit of the winding shaft 1 is configured by providing a gear 21a meshing with a gear 20a driven by the driving motor 19 on the winding shaft 1. However, in order to perform stable winding, the gear is driven by the same motor. (A spline shaft is used as an output shaft) and a gear 21b provided at the opposite end of the take-up shaft. Guide 23 for pressing and guiding the end face of the core to be wound
The distances a and 23b can be arbitrarily changed by the side cylinder 22 and correspond to the axial length of the core.

The case where the honeycomb core is manufactured by the illustrated apparatus will be described. The tip of the flat foil 2 rewound from the flat foil pay-off reel 7 is clamped by the clamp 10 and sent to the position of the winding shaft 1. In this case, winding is performed by inserting the winding shaft on the left side (L) in FIG. The flat foil 2 guided by the flat foil bender / winding shaft insertion guide 6 into the split winding shaft and bent at the tip is held by the pressing roller 4 which has been advanced after the guide 6 has been lowered, and is driven by the driving device. By the operation of 19, it is wound on the winding shaft 1 which is rotated at a low speed. Simultaneously with the start of the low-speed rotation, the tip of the corrugated foil 3 is pushed by the clamp 11 so as to bend between the flat foil 2 and the winding shaft 1. When both the flat foil and the corrugated foil are wound around the winding shaft 1, the guides 23a,
23b starts the steady winding operation by increasing the winding rotation speed in a state where the end face of the core is lightly pressed by the operation of the cylinder 22 to prevent both foils from coming off the shaft.

When the core becomes thick and the outer diameter reaches the target outer peripheral length -α, the drive motor 19 is stopped and the cut shear 9
Then, the flat foil and corrugated foil are cut, and then rotated again to wind up the outer peripheral end, and the end of the flat foil 2 is fixed to the outer periphery of the core by the locking pad 12. Next, the shift cylinder 16 is operated to shift the shift carriage 15 to the left, the right (R) winding mechanism that has been waiting is set to the winding position, and the next flat foil is immediately formed in the same process as described above. The winding operation of the corrugated foil is started. In the left winding mechanism out of the line, the end face of the winding completed core is hard pressed, and then the spot welding machine 13 is pressed.
To fix the winding end by welding. Thereafter, the honeycomb core from which the winding shaft 1 has been removed from the core by the slide unit 18 is transferred to the next step by the core dispensing device.

[0018]

According to the above-described winding method of the present invention, continuous rotation and high rotation speed during winding can shorten the whole winding cycle time, and thereby, the honeycomb core can be reduced. It is possible to improve productivity. Further, there is an advantage that the above-described method can be carried out in a suitable state by the winding device of the present invention, and a conventional device can be used as it is in terms of equipment.

[Brief description of the drawings]

FIG. 1A is an explanatory view showing basic steps of a winding method of the present invention, and FIG. 1B is an explanatory view showing steps of a conventional winding method.

FIG. 2 is an overall explanatory view showing an outline of a winding facility for carrying out the method of the present invention.

FIG. 3 is a side view showing a city worker and a mechanism in a winding portion of FIG. 2;

FIG. 4 is a partially enlarged view showing an example of a preferred shape of a corrugated foil guide roll.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Winding axis 2 Flat foil 3 Corrugated foil 4 Crimping roll 5 Corrugated foil clamp 6 Vendor insertion guide 7 Flat foil payoff reel 8 Wave night payoff reel 9 Cut shear 10 Flat foil clamp 11 Corrugated clamp 12 Loose stop pad 13 Spot welding Machine 14 guide roll 15 shift carriage 16 shift cylinder 17 guide 18 slide unit 19 winding drive motor 20, 21 gear 22 core end surface pressing cylinder 23 winding guide

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-4-371234 (JP, A) JP-A-3-71918 (JP, A) JP-A-2-241614 (JP, A) (58) Field (Int.Cl. ⁷ , DB name) B01J 21/00-37/36 B21C 47/02 B21D 47/00

Claims (2)

(57) [Claims] 1. A flat foil tip continuously supplied is sandwiched between a winding shaft, and then the winding shaft is rotated. In the method in which the flat foil and the corrugated foil are superimposed and then spirally wound and wound on a cylindrical honeycomb core by rotating the winding shaft, the flat foil tip is sandwiched between the winding shaft. Advance the pressure roll and press the flat foil against the winding shaft to rotate the winding shaft at a low speed.At the same time, advance the corrugated foil and push the leading end of the flat foil between the flat foil and the winding shaft so that it is bent. A cylindrical honeycomb characterized in that the winding axis is rotated once to release the corrugated foil clamp, the flat foil and the corrugated foil are co-wound, and then the winding speed is increased while lightly pressing the end faces of the both foil materials. High-speed core winding method. 2. A device for continuously supplying a flat foil and a corrugated foil, a winding shaft for winding the both foils by sandwiching the flat foil tip and rotating with the corrugated foil, and capable of moving forward and backward with respect to the winding shaft. In the winding device of the cylindrical honeycomb core comprising the provided pressure roll,
Two sets of the same structure of the winding shaft and its holding drive unit are arranged, and these are loaded on one shift carriage so that one of the winding shafts can be set at a predetermined winding position. A winding device for a cylindrical honeycomb core.