JPS6242814B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention distributes a belt-shaped sheet divided into a plurality of strips into upper and lower parts by a slitter, and winds the sheets onto upper and lower winding shafts that are rotationally driven at fixed positions via upper and lower touch rollers, respectively. The present invention relates to a vertical distribution winding device in which upper and lower touch roller support arms that support the upper and lower touch rollers are relatively swung as the winding progresses. More specifically, by arranging the swinging shafts of the upper and lower Tatsuchi roller support arms vertically and interlocking them with mutually restraining gears,
The weight of the upper and lower touch rollers and their support arms is offset, and the touch roller at the tip of the small support arm attached to the support arm is pressed against the sheet roll surface with a predetermined contact pressure by a fluid pressure cylinder, and the point of the small support arm is The touch roller support arm is oscillated by a predetermined amount by a fixed amount of retraction, thereby winding up the sheet under appropriate contact pressure.The upper and lower touch rollers are rotationally driven by a transmission mechanism provided in each of the touch roller support arms. , and by interposing a fine speed change mechanism capable of individually fine speed adjustment in the transmission mechanism, sheet winding is performed while maintaining appropriate sheet tension immediately before winding.

When a sheet cut into multiple strips is distributed and wound up and down using a slitter, the touch roller is generally placed against the same state as the sheet rolls that are formed up and down, so that the tutchi roller support arms are aligned vertically in the same direction. However, recent Tatsuchi Roller support arms have not only increased the size of the sheet roll, but also
The tension control mechanism occupies a large space, so if they are arranged one above the other, there will be no room for a driving device or a sheet edge (swarf) winding device. For this reason, the support arm of the upper Tatsuchi Roller has a general shape that leans against the sheet roll with the lower end of the arm as the axis, and the lower end of the support arm has the upper end of the arm as an axis to press the lower Tatsuchi Roller against the sheet roll. hand,
Efforts are being made to reduce the space required.

The difficulty in this case is that the weight of the upper support arm increases the contact pressure between the touch roller and the sheet roll, whereas the weight of the lower support arm acts to reduce the contact pressure. Since it is desired that the upper and lower sheet rolls are of exactly the same quality even if they are distributed and wound up and down, the fact that the weight of the support arm has the opposite effect on the upper and lower parts is a problem in contact pressure control.

This invention solves the above problem, and its outline is shown in FIG. First, the main parts of this embodiment are as follows.
horizontal support shafts 3, 3a to which the rear portions of each a are fixed, and mutually restraining gears 4, 4a that are fitted and fixed to both support shafts 3, 3a, respectively, and mesh with each other. Only the lower support arm 2a is equipped with a hydraulic cylinder 5 as a swing drive mechanism. The rod 5a of the fluid pressure cylinder 5 is gradually retracted at a constant speed corresponding to the growth of the sheet roll R. Then, the lower support arm 2a pivots downward and the touch roller 6a moves toward the winding shaft 1.
At the same time, the upper support arm 2 is pivoted upward via the mutually restraining gears 4a, 4 to separate the touch roller 6a from the winding shaft 1a. upper and lower Tatsuchirolla,
Since the supporting arms are designed so that their weight is offset by the gears 4, 4a, the hydraulic cylinder 5 only needs to open and close both arms. Both arms are self-supporting in any position.

Touch rollers 6, 6a for sheet roll R
The contact pressure of is maintained as designed by the growth of the former and the regression of the latter. What is necessary is to detect the sheet winding length and drive the fluid pressure cylinder 5 accordingly. Weight has no effect at all.

Next, a more concrete version of the device shown in FIG. 1 will be explained in detail with reference to FIGS.

Compared to Fig. 1 above, the horizontal support shafts 3, 3a and mutual restraining gears 4, 4a are unchanged, and it is natural that only one of the support arms 4, 4a has a swinging drive mechanism, but a new addition has been made. Mainly, the small support arms 7 attached to each support arm are pivotally supported at the rear by the tips of the support arms 2 and 2a, and push the touch rollers 6 and 6a attached to the tips toward the winding shafts 1 and 1a by external force. 7
a, Small support arms 7, 7a due to sheet roll growth
Activates the drive mechanism, that is, the hydraulic cylinder 5, each time the amount of retraction of the
A control mechanism for swinging the upper and lower support arms 2, 2a by a certain amount in the direction in which the upper and lower support arms 7a return, in this case, the pressure and detection fluid pressure cylinders 8, 8a. A driving device 24 and a sheet edge winding device 25, which are omitted in FIG. 1, are also shown.

The sheet S pulled out from the original fabric S ₀ is sent to the slitter 9
It is divided into several strips of the required width and advances vertically from the guide rollers 12, 12a attached to the horizontal support shafts 3, 3a, and in this example passes through the tension detection rollers 10, 10a and is applied to the touch rollers 6, 6a. , the winding shaft 1, 1a or the sheet roll R on it
It is wound up.

FIG. 3 shows an enlarged view of the touch roller support arms 2, 2a. Although FIG. 4 is a schematic side view below the guide roller 12 in FIG. 3, the relative positions have been changed for clarity, and the tension detection roller and other parts have been omitted.

The upper and lower touch roller support arms 2, 2a and the respective small support arms 7, 7a form a left and right pair, and hold the touch rollers 6, 6a between them. The horizontal support shafts 3, 3a are supported at both ends by opposing vertical plates of the winding machine frame 11.

The side of the support arms 2, 2a that is away from the winding shafts 1, 1a is called the rear part, and the horizontal support shafts 3, 3a are attached to the rear part of the support arms 2, 2a.
It is fixed with a key or the like (not shown).
Therefore, the support shafts 3, 3a can also serve as swing drive shafts for the support arms 2, 2a. The horizontal support shafts 3 and 3a are engaged with the mutual restraining gears 4 and 4a, respectively, so as to rotate in opposite directions, so that the upper When the support arm 2 is swung, the lower support arm 2a is also swung by the same angle in the opposite direction.

In this embodiment, the horizontal support shafts 3, 3a fix the above-mentioned support arms 2, 2a and gears 4, 4a, and also
The sheet guide rollers 12, 12a are rotatably inserted (loosely fitted). The guide rollers 12, 12a
The passive and interlocking gears 13, 13a attached to one end (the left end in FIG. 4) rotate under the drive of a power mechanism (not shown), and the gears 14, 14 attached to the other end rotate.
The touch roller 6,
The rotation is transmitted to 6a. That is, the lower guide roller 12a
The rotation is transmitted via gears 14a and 15 to the cone pulley 16a that is pivotally supported on the support arm 2a, and then to the spindle 2 of the small support arm 7a via the speed fine adjustment belt 17a.
Turn the cone pulley 18a loosely fitted to 3a. The coaxial gear 19a of the cone pulley 18a drives the gear 20a at the end of the touch roller 6a. By appropriately moving the position of the belt 17a using the belt shifter 21 and its knob 21a, the rotational speed of the touch roller 6a is normally adjusted to the guide roller 1.
The winding tension is slightly slower than that of 2a to stop fluctuations in the tension of the running sheet S and change to a weaker and more stable winding tension.

The drive mechanism for the touch roller 6 on the upper support arm 2 is also the same as that on the lower side described above. Tension detection roller 1
Reference numerals 0 and 10a detect rotational movement around the shaft 22 in response to sheet tension, and the detection portion is not shown because it is a commercially available product.

Next, the handling of this device will be explained.

FIG. 2 shows the state at the start of winding, and the upper and lower support arms 22a are adjusted so that the touch rollers 6, 6a at the lower ends of the upper and lower small support arms 7, 7a can contact the winding shafts 1, 1a with the required pressure. To position the
2a, the rod 5a of the hydraulic cylinder 5 is gradually extended and narrowed. Since the upper and lower arms 2, 2a are symmetrically narrowed by the mutual restraint gears 4, 4a, the respective touch rollers 6, 6a are suspended under their own weight and the cylinders are moved at positions where they either touch or do not touch the winding shafts 1, 1a. All you have to do is stop 5.

The contact pressure between the touch rollers 6, 6a and the winding shafts 1, 1a is determined by the set pressure of the pressure/detection cylinders 8, 8a that push the lower ends of the small support arms 7, 7a toward the winding shafts. The cylinders 8, 8a are fixed to the support arms 2, 2a, respectively, and their pressurizing force is not affected by the movement of the rod in and out. Therefore, even if the upper and lower sheet roll diameters are slightly different, appropriate contact pressure can be obtained independently for the upper and lower sheets.

As winding is started and the sheet roll R wound around the outer periphery of the winding shafts 1 and 1a grows, the small support arms 7 and 7a move around the swinging shafts 23 and 23a fitted in the support arms 2 and 2a. Turn and move back. When the amount of retraction reaches a certain value, the pressure/detection cylinders 8, 8a or a separately provided detector starts the fluid pressure cylinder 5, and the rod 5a is moved by a preset amount. Pull back. As a result, the tips of the upper and lower support arms 2, 2a are slightly separated from the winding shafts 1, 1a, so that the small support arms 7, 7a, which have been swung backward due to the growth of the sheet roll, return to their original positions. Of course, the contact pressure between the touch rollers 6, 6a is maintained at a set pressure by the fluid pressure cylinders 8, 8a.

In addition, by appropriately moving the upper and lower knobs 21a, the drive speeds of the upper and lower touch rollers can be changed slightly, thereby making it possible to wind up the sheet while maintaining the sheet tension at an appropriate level immediately before winding.

In this way, as the sheet roll on the winding shafts 1, 1a grows, the small support arms 7, 7a that support the touch rollers 6, 6a swing back and forth, and the upper and lower support arms 2, 2a that return the support arms 2, 2a symmetrically swing back and forth alternately. This is repeated until the winding is completed. Therefore, the rolled-up sheet roll R is taken out, and the upper and lower touch rollers 6, 6a are brought into contact with the new winding shafts 1, 1a as explained at the start of winding, and pressed against the new winding shafts 1, 1a with a set pressure.

Although the invention has been described above with reference to two embodiments, the present invention can be varied and applied in a variety of ways depending on the implementation conditions and the well-known techniques of the designer without changing the gist thereof. For example, the Tatsuchi roller support arm 2,
In addition to using the fluid pressure cylinder 5, there are various other means for driving one of the parts 2a, such as a screw, a cam, and the like. The mutually restraining gear fitted and fixed to the horizontal support shaft can be designed in various ways, such as by carving teeth on the opposing surfaces of the upper and lower support arms 2 and 2a so that they can be used for the same purpose.

The explanation of the means for detecting the retreat of the touch roller, the means for activating the support arm drive mechanism, and the means for keeping the drive amount of the drive mechanism at a constant value is omitted, but is left to the well-known techniques of the designer.

This invention solves the biggest problem with the system in which the lower space of the upper and lower distribution winding device is large and the driving device, sheet edge winding mechanism, etc. can be placed there, that is, the upper and lower sheet rolls are wound with the same quality. Solved the difficult points. In other words, since the support shafts of the upper and lower Tatsuchi Roller support arms are constrained to rotate symmetrically using mutual restraint gears, the weights of both arms cancel each other out and remain stationary at any position, reducing the influence of the weight of the support arms on the Tatsuchi Roller contact pressure. It was resolved.

In addition, by attaching a small support arm to each of the upper and lower arms, attaching a touch roller to this arm and pressing it against the take-up shaft using an external force, the contact pressure of the upper and lower touch rollers can be precisely controlled separately, regardless of the mechanical accuracy. This made it possible to make them both equal and unequal. Moreover, since the touch rollers are actively driven and the drive speeds of the upper and lower touch rollers can be individually finely adjusted, it is possible to maintain the sheet tension at an appropriate level immediately before winding. It becomes possible to wind the sheet more appropriately.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing the outline of this invention, FIG. 2 is an overall explanatory diagram of an embodiment of this invention, and FIG.
An enlarged explanatory view of the upper and lower Tatsuchi roller support arms in the figure, and Figure 4 is a side view of the lower half of Figure 3 (partially omitted).
It is. 3, 3a... Horizontal support shaft, 4, 4a... Mutual restraint gear, 5... Support arm drive mechanism (fluid pressure cylinder),
7, 7a... Small support arm, 8, 8a... Control mechanism (fluid pressure cylinder for pressurization and detection).

Claims (1)

[Claims] 1. A strip sheet divided into a plurality of strips is distributed vertically by a slitter, and wound onto upper and lower winding shafts that are rotated at fixed positions via upper and lower touch rollers, and as the winding progresses, In the winding device that relatively swings the upper and lower touch roller support arms that support the upper and lower touch rollers, each of the touch roller support arms is arranged vertically in parallel at an intermediate position between the heights of the upper and lower winding shafts. A horizontal support shaft with a fixed rear part, a mutual restraining gear that is fitted and fixed to each of the horizontal support shafts and meshes with each other to offset the weight of the upper and lower support arms, and one of the upper and lower support arms of the Tatsuchi roller. a drive mechanism for swinging, a small support arm attached to each touch roller support arm whose rear part is pivotally supported by the tip of the touch roller support arm and is swingable, and has a touch roller attached to the tip; A fluid pressure cylinder is connected to the arm, the other end of which is connected to the touch roller support arm, and which presses the touch roller at the tip of the small support arm against the sheet roll with a predetermined contact pressure, and the amount of retraction of the small support arm due to sheet roll growth is constant. A control mechanism is provided on each of the upper and lower support arms of the upper and lower rollers to drive the corresponding roller at a predetermined speed. 1. A vertically distributing winding device comprising: a transmission mechanism that rotationally drives the touch roller; and a finely variable speed mechanism that is interposed in each of the transmission mechanisms and finely varies the driving speed of the touch roller.