JPH0529739U - Slitter corer trim duct - Google Patents

Abstract

(57) [Summary] [Purpose] The trim that has been cut and separated by a slitter knife is crushed by a crushing roll so that the trim can be easily sucked through the trim duct suction port. [Structure] The crushing rolls 5a and 5b are arranged above and below the sheet path line on the upstream side of the trim suction port E of the slitter scorer and rotate at the same speed as the corrugated board web or at a slightly higher peripheral speed. To do. The trim that has been cut and separated is squeezed by the squeeze rolls 5a and 5b and is sucked into the trim suction port E, and is treated as a non-sheet.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a trim duct for sucking and carrying slitted trim to a predetermined processing device in an auto slitter scorer applied to a corrugating machine.

[0002]

[Prior Art]

 6 to 9 are schematic configuration explanatory views of the auto slitter scorer. The auto slitter scorer is a device for performing a scoring process and a cutting process along the flow direction on the corrugated board web 2 which continuously runs as shown in the figure. The cutting part shown in FIG. 8 and the ruled line shown in FIG. It is designed to work with a compartment. The cutting section is composed of slitter knife shafts 12a and 12b provided corresponding to the upper and lower sides of the corrugated board web 2 sequentially conveyed, heads 18a and 18b, and a pair of slitter knifes 1a and 1b fixed to the heads. The corrugated cardboard web 2 can be cut by engaging the upper and lower slitter knives 1a and 1b with each other. On the other hand, the crease forming section is also similar to the cutting section, and the ruled line roll shafts 19a and 19b provided correspondingly to the upper and lower sides, the heads 20a and 20b, and the corresponding outer peripheral surface shape fixed to the heads are usually uneven. It is composed of a pair of ruled line rolls 21a and 21b. By engaging both ruled line rolls with each other, a predetermined ruled line can be formed on the corrugated board web 2. The required number of heads 18a, 18b and 20a, 20b are set at predetermined axial positions according to the shape of the corrugated board sheet 22 manufactured on the shafts 12a, 12b, 19a, 19b. You can

FIG. 6 shows a processed state of the corrugated board sheet 22 corresponding to the slitter scorer. In this case, three sets of cutting portions indicated by (a), (b) and (c) in the figure and (a) are shown. (B), (c), and (d) are illustrated as an example of two-piece picking in which four sets of ruled parts are arranged. By the way, the auto slitter scorer normally has two sets A and B for one corrugated machine as shown in Fig. 7. When one set is in operation, the other set is ready for the next order. You can prepare. The horizontal width B of the corrugated board web 2 to be manufactured is determined by being wider than the total width B _O of the required product sheets 22a and 22b and by the minimum standard width that meets the same conditions. The trim 3 generated outside the slitter knives 1a and 1b located at the width end is removed as a non-sheet. In addition, E in FIG. 6 is a suction port of the trim duct 4, and the downstream side of the duct is connected to the cat tab lower 17 via a flexible duct 23 and an air duct pipe 24. The pair of left and right suction ports E provided on the driving side and the operating side are configured so that their positions can be adjusted according to the lateral width of the corrugated board web 2 to be manufactured.

Next, the function of the suction port of the trim duct 4 will be described. The trim 3 cut in the slitting section of the slitter scorer is transferred to the downstream together with the product sheet 22 and passes through the suction port E to receive the suction force of the cat tab lower 17 and is sucked into the duct 4 to be separated from the product sheet 22. It is separated and conveyed to the cattablower 17 through the path indicated by the arrow. However, the trim 3 includes a double-sided double-sided ball seat and a wide one having a high rigidity, and the running speed of the trim 3 also greatly varies depending on the manufacturing speed of the corrugated ball seat. In response to these changes in conditions, the conventional trim duct suction port is not equipped with a device for assisting the suction (introduction) state, especially when the corrugated cardboard runs at high speed or the trim rigidity is high. It is difficult to suck the trim into the duct 4 without fail, so that the trim runs in parallel with the product sheet 22 and passes over the suction port E, and is conveyed to the cut-off or stacker in the downstream process. There was a problem. There is such a problem (unstable element) in the trim duct 4 part having the conventional structure, and the mistaken intake of the trim 3 into the duct 4 is a direct cause of various troubles described later.

[0005]

[Problems to be solved by the device]

 That is, as described in the section of the prior art, it cannot be said that the suction of the conventional trim duct suction port is always reliable due to the nature of the trim to be sucked (the traveling speed and rigidity of the trim). If it is fast, or if it has high rigidity such as double-faced double-faced corrugated sheet or wide trim, the trim will not be sucked into the trim duct and will flow to the subsequent process together with the product sheet and wind around the cut-off knife cylinder. It causes various troubles such as jamming up and scattering on the stacking part of the stacker and the floor. If a trim is removed or repair work is performed while operation is stopped when trouble occurs, a large amount of time is lost and the operating rate (productivity) is reduced.

In view of the above, the present invention aims at ensuring that particularly high-rigidity trims and trims traveling at high speeds can be absorbed by the trim ducts along the traveling direction with respect to the corrugated board webs continuously traveling. In a slitter scorer of a corrugated machine that performs scoring and cutting, it is installed above and below the sheet path line on the upstream side of the trim suction port, and rotates at the same speed as the corrugated board web or at a slightly higher peripheral speed. The present invention has a pair of crushing rolls configured to crush and squeeze only the trim portion, thereby solving the above-mentioned problems.

[0007]

[Means for Solving the Problems]

 For this reason, the present invention uses a slitter scorer of a corrugating machine, which performs scoring and cutting along the traveling direction of a corrugated board web that runs continuously, separates and inhales the trim cut by a slitter knife. It is possible to crush only the trim part by pinching it on the outer peripheral surface, rotating at the same peripheral speed as the corrugated board traveling speed or at a slightly higher peripheral speed upstream of the duct suction port for transport to the processing equipment. It is provided with a pair of crushing rolls that can be used as a means for solving problems.

[0008]

[Action]

 The trim separated by the slitter knife is crushed by the pinching rotation of the crushing roll that is linked to the traveling speed, and the bending rigidity is extremely reduced, so it is possible to freely bend and deform it with a small amount of operating force. Becomes Therefore, it is possible to reliably suck the trim into the trim duct even under conditions such as high rigidity where the intake to the trim duct inlet has been unstable until now, or when the trim running speed is high. You can

[0009]

【Example】

 DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the embodiments of the drawings. FIG. 1 is a plan view of a slitter scorer trim duct suction port portion according to the present invention, FIG. 2 is a side view of FIG. 1, and FIG. FIG. 4 and FIG. 5 are explanatory views of other application examples regarding the crushing roll. The present invention relates to improving the function of a suction port of a trim duct 4 for sucking in a corrugated cardboard web 2 trimmed by slitter knives 1a and 1b provided on an auto slitter scorer and carrying trims 3 at both width ends to a predetermined processing device. Then, the trim 3 is crushed by the pinching rotation of the crushing rollers 5a and 5b provided upstream of the suction port E of the duct 4, and the bending rigidity of the trim is lowered to facilitate the suction.

The structure and function of the trim duct of the slitter scorer according to the embodiment of the present invention will be described below. In the present embodiment, as shown in FIG. It is provided with a pair of crushing rolls 5a and 5b opposite to each other, and the lower crushing roll 5b is attached to a shaft 6b, and its rotation is restricted via a key 7 so that it can slide only in the axial direction. You can do it. Both shaft ends of the shafts 6a and 6b are axially supported by the frames 9a and 9b of the apparatus via bearings 8a and 8b, and the synchro pulley 10 fixed to the outermost end of the shaft is a wound synchro belt. It is connected via 11 to a synchronizing pulley 13 fixed to a slitter knife shaft 12. On the other hand, both ends of the upper crushing roll 5a are rotatably supported by the shafts 9a and 9b via bearings (not shown) so that the upper crushing roll 5a can rotate up and down. Are coated. In the figure, 16a and 16b are brackets for axially supporting the lower crushing roll 5b via bearings 14a and 14b. The other end of the bracket is fixed to the side plate of the intake port of the trim duct 4, and the trim duct 4 is When it moves in the lateral width direction, it has a function of moving the lower crushing roll 5b in the axial direction in conjunction with this. Further, the outer peripheral surface of the illustrated lower crushing roll 5b is formed with unevenness over the entire circumference.

The operation of the trim duct of the slitter scorer having the above-described structure will be described. The suction port E of the trim duct 4 corresponds to the trim position formed at both width ends of the corrugated board web 2 as described in the section of the prior art. Then, it is moved in the step ball width direction by moving means (not shown), and the inner end of the lower crushing roll 5b is fixed at a position corresponding to the slitting groove. The traveling corrugated cardboard web 2 is slitted by the front process slitter knives 1a and 1b, and then reaches between the crushing rolls 5a and 5b rotating at the same speed as the traveling speed or at a slightly higher peripheral speed, and both rolls 5a and 5b. 2 is clamped intermittently as shown in FIGS. 2 and 3, and is fed onto the suction port E of the trim duct 4 in a state where the bending rigidity in the vertical direction in the figures is reduced. Therefore, the trim 3 can be surely sucked into the suction port E by the suction acting force of the cat tab lower 17 connected to the duct 4.

FIGS. 4 and 5 show another application example. FIG. 4 shows the outer peripheral surfaces of the upper and lower crushing rolls 5a and 5b formed into a normal columnar shape, and FIG. 5 shows the upper and lower crushing rolls. The outer peripheral surfaces of 5a and 5b are both formed in a concavo-convex shape, and the relative phase can be set arbitrarily. Although the two examples shown in FIGS. 4 and 5 are different in trim crushing state, they can have the same functions as those of FIG. 2, respectively. Various configurations are conceivable, such as allowing the upper crushing roll 5a in each of the above examples to freely rotate independently, or forcibly rotating in synchronization with the pair of lower crushing rolls 5b. It should be noted that the present invention is not limited to the above-mentioned embodiment, and various changes can be made within the scope not departing from the gist of the present invention.

[0013]

[Effect of the device]

 As described in detail above, according to the present invention, by crushing the trims one after another in the process immediately before the trim suction port, the rigidity of the trim becomes weaker, which has been difficult in the past. Even the trim with high bending rigidity can be reliably sucked into the duct due to the suction action of the cat tab lower. Therefore, various problems due to mistakes in trim separation and discharge can be eliminated, and the productivity can be greatly improved, which is an excellent effect.

[Brief description of drawings]

FIG. 1 is a plan view of a trim duct suction port portion installed in a slitter scorer according to the present invention.

FIG. 2 is a side view of FIG.

FIG. 3 is a crushed state view of the trim.

FIG. 4 is a side view showing another embodiment relating to the outer peripheral shape of the crushing roll provided in the present invention.

FIG. 5 is a side view showing still another embodiment relating to the outer peripheral shape of the crushing roll provided in the present invention.

FIG. 6 is a plan view showing an overall schematic structure of a conventional auto slitter scorer.

FIG. 7 is a side view of FIG.

FIG. 8 is a front view of a cutting unit in a conventional auto slitter scorer.

FIG. 9 is a front view of a ruled portion in a conventional auto slitter scorer.

[Explanation of symbols]

 1 slitter knife 2 corrugated web 3 trim 4 trim duct 5 crushing roll 6 shaft 7 key 8 bearing 9 frame 10 synchro pulley 11 synchro belt 12 slitter knife shaft 13 synchro pulley 14 bearing 15 elastic body 16 bracket 17 cutter blower 18 head 19 ruled roll shaft 20 Head 21 Ruled Line Roll 22 Product Sheet 23 Flexible Duct 24 Air Duct Piping E Trim Duct Suction Port

Claims (1)

[Scope of utility model registration request] 1. A slitter scorer of a corrugating machine, which performs a scoring process and a cutting process along a traveling direction on a corrugated board web that continuously runs, separates and inhales a trim cut by a slitter knife and performs a predetermined treatment. A pair of crushers that can crush only the trim part by rotating at the peripheral speed, which is the same as or slightly faster than the corrugated board traveling speed, and clamped by the outer peripheral surface, upstream of the upper part of the duct suction port for transporting to the device. A slitter corer trim duct featuring rolls.