JPH0428538A - Slitter scorer - Google Patents

Abstract

PURPOSE:To maintain the dimensional accuracy of the cutting of a sheet, and to remove trouble such as jam-up by installing a shear unit notching a plurality of positions in the cross direction of the continuously travelling corrugated sheet. CONSTITUTION:A knife head 4, in which a knife 3 is fixed in the axial direction of a peripheral surface, is formed in a ring shape divided into the plural in the axial direction of a shaft 5, and can be slid in the axial direction through a key 6 and is fastened at a specified position, and a gear 7 is fixed on one side of the shaft 5. An anvil cylinder 12, on an circumferential surface of which an elastic body 11 is fastened, is juxtaposed to the lower section of the shaft 5, and a gear 13 is fixed on one side of the cylinder 12, and engaged with the gear 7. A notch in the cross direction of a sheet to an aimed position on the corrugated sheet 1 can be formed by holding rotation, in which the knife 3 attached to the knife head 4 in the cross direction of the sheet by an operating signal and the elastic body 11 of the cylinder 12 section are synchronized. Accordingly, the sheet is not cut and separated extending over the whole region in the cross direction, thus preventing jam-up in the next process.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention is equipped with a shear unit that can be activated during an order change to form a plurality of notches in the width direction of a continuously running corrugated cardboard sheet. It concerns the slitter scorer.

(Prior Art) FIGS. 5 to 8 are explanatory diagrams showing the structure and operation of a conventional rotary shaft. The rotor washer is a device that cuts the corrugated cardboard sheets continuously produced in the pre-process corrugating machine in the width direction, or notches and punches them in the same width direction. It functions to cope with setting changes in response to changes in specifications, such as changing the width of the product sheet 2 or changing the width of the product sheet 2. FIG. 6 is a perspective view showing the operating state of the rotary shear, showing the state of engagement between the anvil 20 on the circumferential surface of the anvil cylinder 17 and the cutting knife 19 of the knife cylinder 18, and the state of processing on the traveling corrugated cardboard sheet 1. The knife cylinder 18 to which the knife 19 is fixed is pivotally supported on both sides via hair rings (not shown) on frames erected at both width ends of the device.

Further, the anvil cylinder 17, which is disposed opposite to the knife cylinder 18, is also pivotally supported at both ends by the same frame via hair rings. The anvil cylinder 18 is connected to the knife cylinder 18 through a corresponding gear, and rotates in synchronization with the knife cylinder 18 in a counter-rotating manner.
7 and the knife cylinder 18 to the anvil cylinder 17
The corrugated pole sheet 1 runs in contact with the upper part. Further, as shown in FIG. 7, the surface of the anvil cylinder 17 is partially covered with an anvil (elastic body) 20.
A predetermined dimension from the part l that spans the entire width of the central part of! . By changing the relative phase of the anvil cylinder 17 that engages with the knife 19 of the knife cylinder 18, as shown in FIG. Various cutting processes are possible.

In other words, by engaging the knife 19 at position A in FIG. 8, complete cutting is possible over the entire width, and by engaging the knife 19 at position B in the figure, both width ends of the corrugated cardboard sheet 1 can be cut. P of Fig. 7 and Fig. 8 in the section. It is possible to form a notch corresponding to . In this way, the rotary shear of this type can form any notch from zero to the maximum (W ffo)/2 length at both width ends of the corrugated cardboard sheet 1 by appropriately variably setting the B position where it engages with the knife 19. It is now possible to process it.

Next, to explain the operation, as an initial setting of the rotary shear, first, the anvil cylinder 17 is rotated by driving the indexing motor, and the target cardboard sheet 1-
The relative phase with the knife 19 corresponding to the state of cutting into 1 is adjusted and maintained. Subsequently, an electromagnetic flange brake (not shown) is activated, and the power transmitted from the line shaft is interrupted at predetermined timings, thereby notching or cutting the traveling corrugated cardboard sheet 1.

FIG. 9 corresponds vertically to FIG. 10 and illustrates the processing state of a corrugated cardboard sheet.

Slintas scorer Pa, Pb is equipped with ruled line roll 2
1a, 21b, and slitter knives 22a, 22b, this is a device that applies predetermined ruled lines K and slitting grooves S to the traveling corrugated cardboard sheet 1 as shown in FIG. 9, and the required width W of the product sheet.

In connection with this, by appropriately selecting the width W of the corrugated cardboard sheet, it is possible to simultaneously manufacture a plurality of sheets (multiple trade-ins) (FIG. 9 illustrates the case of two T-cuts).

In addition, two machines, Pa and Pb, are often installed in the direction of sheet movement in order to shorten the time required for resetting when changing orders. In addition, the width W of the all-stage pole web to be manufactured is set slightly wider than the width Wo used as the product sheet, and both widths are such that defects such as misalignment or glue sticking out when laminating the base paper are likely to occur. Cut the end into a strip and scrape off 16 pieces of waste paper.
23a and 23b.

Next, we will briefly explain the setting changes associated with order changes. The trim position associated with an order change is transmitted as a signal from an order change system control device (not shown), and the standby Slinta corer pb sets the position of the trim duct 23b as well as various settings corresponding to the new order. At the same time, in the trim cutting device (rotary shear), the relative angle of the anvil cylinder 17 is set in accordance with the position of the knife 19 in order to set the cutting amount at both width ends of the corrugated pole web corresponding to the new order. . Next, at a predetermined timing when the corrugated paperboard sheet 1 passes, the knife cylinder 18 and the anvil cylinder 17 are rotated in opposite directions to form a trim cutting notch at a desired position. Next, the notch position is transferred to the standby slitter scorer pb, and at a predetermined position, first the scoring roll 21b is engaged, then the slitter knife 22b is engaged, and processing as a new order is sequentially performed.

On the other hand, in the slitter scorer Pa that was operating for the old order, the ruled line roll 21a and the slitter knife 22a are sequentially released at a predetermined timing when the leading edge of the corrugated paperboard sheet for the new order arrives. In addition, the new trim 16b generated from the new order corrugated sheet 1 is sucked and conveyed into a pair of newly set trim ducts 23b in the new order slitter scorer pb, and is shredded by a canterproa 24 provided along the way for post-processing. It will be done.

Conventional rotary shears have only two functions: making notches of arbitrary length at both width ends of a running corrugated cardboard web, or cutting completely across the entire width of the web. In this case, only the width of the trim 16 at the width end is changed due to the order change. In other words, if the separating slit groove in the center of the sheet is continuous, or if the cutting length of two sheets running parallel is the same even if the sheet separating slit groove becomes discontinuous due to a change in product sheet width, or if the cutting length of two sheets running parallel is the same, or as shown in the figure It was possible to stably switch specifications only under limited conditions, such as when manufacturing only one type of product sheet 2 from one omitted corrugated board sheet 1.

However, when the specifications are changed due to an order change, not only the width dimension of the product sheet 2 changes as shown in Fig. 5, but also the cutting length of the two sheets 2 running in parallel may be changed arbitrarily. many. Also, 2 pieces from 1 piece of cardboard web
When manufacturing different types of sheets in parallel, if the cutting lengths of the parallel sheets are different from each other, each sheet is transferred to a separate rotary F ramsha in a downstream process cutoff (not shown) and cut to a predetermined length. I will do it. Therefore, for example, when the specifications are changed as illustrated in the same figure, a discontinuous portion X remains in the central slitting groove, and the traveling route is changed at the downstream process cutoff when the lengths of the sheets running parallel are different from each other. (separation into the upper and lower parts) not only causes the discontinuous portion It occurs frequently.

Therefore, for these reasons, when the position of the slit groove for sheet separation is changed in the conventional rotary shear, the front and rear corrugated cardboard webs are once cut and separated over the entire width at the time of order change, and the sheets generated at the discontinuous portion X are separated. Measures were taken to avoid damage. However, this method has the disadvantage that the regulations at the rear end of the old order sheet and the front end of the new order sheet are temporarily free, and the product sheet 2
Meandering and fluctuations in conveyance speed occur. As a result, the accuracy of the cutting length, etc. becomes uncertain, and is a cause of various troubles that may occur until the new sheet running conditions are stabilized.

(Problem B to be Solved by the Invention) The conventional rotary shear has only two types of functions: machining notches in the sheet width direction at both width ends of a corrugated board sheet, and cutting completely across the entire width of the sheet. Therefore, under very limited conditions such as when only the bird width is changed due to an order change, the notches formed at both width ends can be used to smoothly handle (
However, for example, in multiple trade-ins where two types (multiple types R) of sheets with different lengths are manufactured from one corrugated cardboard web, the width of the sheet is changed due to an order change, and the length of the cut sheet is changed. If the slitting position is different between the new and old orders, the slitting position will shift in the sheet width direction, creating a discontinuous part, and the sheet will be damaged due to separation of the sheet travel path at the next process cutoff.
There was a problem with the paper being defective. Not only that, but
The damaged sheet pieces got stuck between the conveyor rolls in the next process, causing various problems such as jams. Therefore, as a countermeasure to the above problem, if the sheet is completely cut in the width direction at the order change part, problems such as tearing at the slinting position will be eliminated, but the sheet edges of the new and old orders will become free and the conveyance state will be unstable. This causes the vehicle to meander or the traveling speed (amount)
This has the drawback that other problems occur, such as fluctuations in the cut-off dimension in the next step, such as poor cutting dimensional accuracy.

The present invention provides a slitter scorer equipped with a shear unit for inserting notches, and aims to solve the above-mentioned conventional problems.

(Means for Solving the Problems) For this reason, the present invention aims to improve the width of corrugated pole sheets that are continuously traveling in a Surinota scorer of a corrugating machine that cuts and purchases corrugated cardboard sheets that are continuously traveling along the sheet traveling direction. The device is equipped with a unit that makes notches at multiple locations in the direction, thereby providing a means for solving the problem.

(Function) In the above configuration of the present invention, when the wide width dimension of the sheet on both sides of the sheet is changed due to an order change, or when the sheet width is changed due to multiple trade-ins in which multiple types of sheets with different cutting lengths are manufactured, etc. Since the notch in the width direction of the sheet can be processed and formed only in the necessary parts, there is no need to completely separate the old and new sheets due to order changes as in the conventional method, and problems such as sheet tearing are eliminated when specifications are changed. Therefore, the sheet can be stably conveyed, cutting dimensional accuracy can be accurately maintained, and troubles such as jam-ups can be eliminated.

(Example) The present invention will be described below with reference to the embodiments shown in the drawings. Figs. 1 to 4 are explanatory diagrams of the structure and function of a slitter scorer that is installed in a corrugating machine and shows an embodiment of the present invention. In the figure, for the corrugated cardboard sheet 1 that is continuously running,
The function of the slitter scorer P for cutting and purchasing along the sheet traveling direction is the same as in the conventional case.

Now, the present invention provides the above-mentioned slitter scorer with a shear unit capable of making notches at multiple locations in the width direction of the running corrugated cardboard sheet 1, thereby functionally allowing two sheets to be cut from one corrugated cardboard sheet L. This is more effective in the case of multiple trade-ins where multiple product sheets 2 are manufactured in parallel, and the width Wo of the product sheet 2 and the cutting length of the sheet are changed due to order changes. Even if the sheet 1 is not completely cut and separated as in the past, the sheet 1 is notched in the width direction only in the necessary parts, so that it can be stably transported to the next process in a continuous state as a whole. be.

To explain the structure below, FIGS. 1 and 2 show the structure of the shear unit installed in the slitter scorer of the present invention. It forms a ring shape divided into a plurality of parts in the axial direction of the attached shaft 5, and each can slide in the axial direction (width direction of the corrugated board sheet) via a key 6 interposed between it and the shaft 5. , so that it can be fixed in a predetermined position. A gear 7 is fixed to one side of the shaft 5, and both ends are pivotally supported by frames 9a, 9b of the slitter scorer P via bearings 8a, 8b. Note that IQ in the figure is an electromagnetic clutch brake that transmits rotation from a drive device (not shown) to the shaft 5 at a predetermined timing.

On the other hand, below the shaft 5, an anvil cylinder 12 having an elastic body 11 fixed to its peripheral surface is arranged in parallel, and a gear 13 is fixed to one side of the anvil cylinder I2, and meshes with the gear 7 fixed to the shaft 5. It's a shame. Further, both shaft ends of the anvil cylinder 12 are also supported by the frames 9a, 9b via hair rings 14a, 14b. In the above structure, the knife 3 attached to a plurality of knife heads 4 arranged at predetermined positions in the sheet width direction according to an activation signal,
By the synchronous rotation of the anvil cylinder 12 with the elastic body 11, a notch can be formed in the sheet width direction at a desired position on the corrugated cardboard sheet 1.

FIG. 4 is an explanatory diagram of an example of the setting of the shear unit and the state of the notch formed on the corrugated paperboard web 2 by this setting. There are various methods for setting the knife blade 4, such as moving it to a predetermined position using the setting function of the slitter knife 22 of the slitter scorer body, or using a known independent setting function via the carrier 15.

As a result, not only the width of the trim 16 section and the product sheet width are changed as shown on the right side of Figure 4 due to order changes, but also the running path of the sheets running parallel to each other is separated vertically due to the difference in sheet cutting length in the next process. Even when the product sheet 2 is moved, the sheet can be stably transported without damaging the product sheet 2.

As mentioned above, according to the present invention, notches can be formed only at necessary locations by setting the movement of the knife head 4, so there is no need to completely cut the corrugated cardboard sheet 1 across its entire width as in the past, and the cutting process is stable. The conveyance of the sheet can be maintained, and conventional problems such as poor sheet cutting length accuracy in the next process or sheet conveyance troubles due to jams can be solved.

(Effects of the Invention) As explained in detail above, the present invention is provided with a shear unit that makes notches at multiple locations in the width direction of the corrugated cardboard sheet, so even in the case of multiple trade-in order changes, it is possible to Since sheets are not cut and separated over the entire area, it is possible to prevent jam-ups in the next process that occur during high-speed order changes or order changes of sheets with low rigidity. In addition, it eliminates the meandering of the rear end of the old sheet and the front end of the new sheet that occurred due to full-width cutting, and also eliminates poor cutting accuracy caused by instability of sheet running. It is.

[Brief explanation of the drawing]

FIG. 1 is a front view showing the structure of a shear unit installed in a Srisota scorer according to an embodiment of the present invention (B--B in FIG. 3).
B sectional view), Fig. 2 is an A-A sectional view of Fig. 1, Fig. 3 is a side view of the Surinotas corer shown in Fig. 1, Fig. 4 is an explanatory view of the setting side of the shear unit on the left side, Fig. 4 The right side is an explanatory diagram of the machining state of the corrugated sheet, which corresponds to the left side in position. Figure 5 is an explanatory diagram of the malfunctions of the conventional rotary shear. Figure 6 is the operating (processing state) of the conventional rotary shear. 7 is a developed view of the outer peripheral surface of the anvil cylinder of the rotary shaft, FIG. 8 is an explanatory diagram of the machining state of a corrugated hole sheet that corresponds in position to FIG. 7, and FIG. 9 is a purchase of corrugated sheet, An explanatory diagram showing the cutting processing situation, Fig. 1O is a side view explaining the processing of a general rotor washer, slitter scorer, and slit trim, Fig. 11
The figure is a front view of the slitter knife, and FIG. 12 is a front view of the ruling roll. Explanation of main parts of the diagram 1 Cardboard sheet 2 - Product sheet 3 Knife 4 - Knife head 5 - Shaft 10 - Electromagnetic flank brake 11 - Elastic body 12 Anvil cylinder 16 -) Rim 17 - Anvil cylinder 18 - Knife cylinder 19 - Knife 20-Anvil (elastic body) 21-Ruler roll 22-Slitter knife

Claims (1)

[Claims] The slitter scorer of a corrugated machine that cuts and purchases continuously running corrugated sheets along the sheet travel direction is equipped with a shear unit that cuts notches at multiple points in the width direction of the continuously running corrugated sheets. A slitter scorer that is characterized by: