JPS6218346B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic splicing device for single-sided corrugated cardboard sheets, which switches a single-sided corrugated cardboard sheet to one with a different corrugated size when changing the corrugated size to a different corrugated size in a corrugated board manufacturing apparatus. be.

There are various types of corrugated cardboard sheets, such as A flute, B flute, and AB flute, depending on the size of the corrugations.
In order to produce these various corrugated sheets with one corrugated board manufacturing device, it is necessary to switch the single-sided corrugated sheets used between the glue machine and the double facer, which requires splicing the old and new single-sided corrugated sheets. .

The paper splicing work currently being carried out will be explained with reference to FIG. Figure 1 shows the switching from A flute to B flute, and the A flute single-sided corrugated board sheet 1 produced with a single facer is made by applying glue 3 stored in a group pan 2 in a glue machine to the top of the corrugated board using a glue roll 4. The liner 6 is preheated by a preheat roll 5 and then bonded within a double facer. When switching production from this state to B-flute corrugated paperboard sheets, first lower the operating speed of the machine (approximately 50 m/min), and then cut the A-flute single-sided corrugated sheet 1 between the glue machine and the double facer with a knife, etc. , Next, the tip of the B flute single-sided cardboard sheet 7, which had been waiting for the glue machine to arrive at the position,
A series of flute changes is completed by manually inserting the flute into the double flute entrance, that is, between the front belt drum 8 and the guide plate 9.

In the case of such work, the operator cuts the single-sided corrugated sheet that is running while the machine is running with a knife or the like, and then manually thrusts the single-sided corrugated sheet of the next flute into the double facer entrance, which is dangerous work. In addition, since the machine speed is made low, there are drawbacks such as a decrease in productivity.

The present invention consists of two single facers each forming a single-sided corrugated sheet with different corrugation sizes;
Two glue machines in the vertical direction each apply glue to the corrugated top of the single-sided corrugated sheet from each single facer, a liner supply means for supplying liner below the single-sided corrugated sheet, and a glue machine. In a corrugated board manufacturing apparatus comprising a supplied glued single-sided corrugated sheet and a double facer that press-bonds a liner to form a corrugated sheet, one end is disposed on the running path of the single-sided corrugated sheet from the upper gluing means. A swing arm is provided so as to be able to swing vertically toward the running path of the single-sided corrugated cardboard sheet from the lower gluing means with the other end as the center, and the upstream end in the sheet running direction is centered at the tip of the swing arm. a first cutting and holding means having a suction and holding means provided to be swingable in the vertical direction; and a cutting means fixed to the downstream end of the suction and holding means so as to protrude downward;
A suction holding means is provided on the running path of the single-sided corrugated cardboard sheet from the lower gluing means so as to be able to swing vertically around the upstream end in the sheet running direction, and a downward suction holding means is provided at the downstream end of the suction holding means. a second cutting/holding means having a cutting means protruding and fixed to the liner; and a second cutting/holding means that is attached to an arm disposed below the liner running path and supported so as to be swingable in vertical and longitudinal directions to change the running path of the liner. and a guide roll capable of press-bonding the liner to the single-sided corrugated cardboard sheet held by the suction and holding means in cooperation with the suction and holding means of each of the cutting and holding means, and its purpose is different from that of the conventional one. To provide an automatic paper splicing device which eliminates the drawbacks and can splice single-sided corrugated sheets without requiring dangerous work or reducing machine speed.

The present invention is configured as described above, and when a single-sided corrugated sheet is being produced by laminating one single-sided corrugated cardboard sheet with a liner and a double facer, and when switching to another single-sided corrugated sheet, the single-sided corrugated cardboard sheet currently being laminated The sheet is cut by the cutting means at the tip by swinging the cutting and holding means disposed on the running path downward, and the sheet feeding is stopped and the sheet is sucked by the holding means provided upstream of the cutting means and one side is cut. Hold the cut part of the cardboard sheet on the glue machine side and prepare it for the next order change. On the other hand, the other single-sided corrugated cardboard sheet is held by another cutting and holding means, and the cutting and holding means is swung, and the guide roll is also swung to change the running path of the liner, thereby holding the liner in the other position. The switching is completed by pressing and laminating the one-sided corrugated sheet held by the means and supplying it to the double facer. If you want to return to the original order, you can perform a similar operation.

In this way, according to the present invention, when producing corrugated sheets with different corrugation sizes, the switching of single-sided corrugated sheets is done by the cutting and holding means and the guide rolls, as described above, without reducing the operating speed of the machine. It can be done mechanically without any dangerous human operations. This also increases the production efficiency of corrugated cardboard sheets.

The present invention will now be described in detail with reference to the most preferred embodiment shown in FIGS. 2-9. In the figures, the same numbers as above indicate the same parts. The guide roll 23 will be explained. Guide roll 2
Since the members provided on both sides of 3 have the same structure, only one side will be described below. Note that the same members are indicated by the same reference numerals with a dash (') added. Each of the arms 10 is disposed outside the liner 6 running path, and is rotatably supported via a bush 12 on a support shaft 11 attached to a frame 33, and a sprocket wheel 13 is attached to the support shaft 11 with a key. It is attached by 18. A shaft 15 is rotatably attached to the tip of the arm 10 via a bush 14. A sprocket wheel 16 is attached to the outer end of the coaxial shaft 15 by a pin 17, and the tooth ratio between the sprocket wheel 13 and the sprocket wheel 16 is larger, and the two are connected by a chain 42. . A lever 19 is attached to the shaft 15 with a key 20, and a guide roll 23 is attached to the tip of the lever 19 so as to be rotatable by a bearing 22 with the shaft 21 as a fulcrum. 24 and 25 are cylinders connected in series, one end of which is connected to the frame 33.
The other end is attached to the bracket 45 fixed to the arm 1.
It is attached to the tip of 0.

Next, the first cutting and holding means will be explained. Reference numeral 26 is a suction box disposed above the single-sided corrugated cardboard sheet travel path over the entire width of the sheet. The shaft 31 is rotatably supported by bearings 40, 40' fixed to the frame 33. Swing arms 27 and 27' each connect a shaft 31 and a suction box 26, and have the same structure including related parts, so swing arms 27 and 27' will be referred to as swing arms 2 and 27', respectively.
7 will be explained. One end of the swing arm 27 is attached to the end of the shaft 31 by a key 47, and the shaft 28 is attached to the other end. The suction box 26 is rotatably mounted on a shaft 28. A shaft 46 is fixed to an intermediate portion of the swing arm 27. The cylinder 29 has one end connected to the shaft 4.
6, the other end is rotatably attached to a suction box 26, respectively. swing arm 2
7' also has a related structure similar to that of the swing arm 27. A knife 30 is attached over the entire width of the double facer side end of the suction box 26. A lever 48 is attached to the center of the shaft 31 by a key 49, and the other end is supported by the other end of a cylinder 32 whose one end is supported by brackets 41, 41' fixed to the frame 33.

Next, the second cutting and holding means will be explained.
Reference numeral 34 denotes a suction box constructed similarly to the suction box 26, and a knife 30' is attached to the end on the double facer side over the entire width. The shaft 35 is rotatably supported by bearings 37, 37' fixed to the frame 2' of the glue machine. Suction box 34 is axis 3
5 by a key 36. A lever 38 is attached to one end of the shaft 35 with a key 39, and the other end of the lever 38 is attached to the frame 2'.
It is connected to a cylinder 44 supported by a bracket 43 fixed to the cylinder. The other end of the shaft 35 is also constructed in the same manner as described above. suction box 2
Suction holes for suctioning and holding a single-sided corrugated cardboard sheet are machined on the lower surface of each member 6, 34 at a constant pitch in the width direction. The suction pressure is generated by a known method such as a blower or a vacuum pump, and dampers are provided in the piping up to the suction boxes 26 and 34, and the suction pressure is controlled by the operation of the dampers. In the glue machine, the upper part is the gluing mechanism for A-flute single-sided corrugated sheet, and the lower part is the B-flute gluing mechanism.
This is a gluing mechanism for flute single-sided corrugated sheets.

The present embodiment is constructed as described above, and its operation will be explained next. Figures 4A to 4D show flute change from A flute to B flute, and Figure 4A shows the state in which A flute corrugated paperboard sheets are being produced. The guide roll 23 is waiting at the N position. At this time, air enters the rod sides of the cylinders 24, 24' and the rod sides of the cylinders 25, 25', and each cylinder is in a contracted state. The tip end 49 of the B-flute single-sided corrugated sheet 52 is held by suction on the suction box 34. The B-freight rider roll 50 of the glue machine is rising. From this state, the cylinders 24, 24'
When air is injected into the heads of the cylinders 25 and 25' and each cylinder is extended, the arms 10 and 10' are rotated around the support shafts 11 and 11', while the sprocket wheels 13 and 13' are rotated around the support shafts 11 and 11'.
1 and 11' and do not rotate, the winding angle phase of the chains 42 and 42' on the sprocket wheels 13 and 13' changes, and as a result, the sprocket wheels 1 and 11' are fixed and do not rotate.
6 and 16' rotate counterclockwise according to the tooth number ratio. This is the lever 1 fixed to the shaft 15 on which the sprocket wheels 16, 16' are mounted.
9, 19' are rotated in the same direction, meaning that cylinders 24, 25 and cylinder 2
4', 25' are fully extended to their full strokes, the guide roll 23 moves from the N position to the B position, changing the travel path of the liner 6. At this time, there is a gap between the guide roll 23 and the lower surface of the suction box 34. (The state shown in Fig. 4B) Next, when air is introduced into the head side of the cylinders 29, 29' and the cylinders 29, 29' are extended, the suction box 26 rotates around the shafts 28, 28', and
A flute single-sided corrugated sheet 1 is cut with a knife 30. At the same time, the A-flute single-sided corrugated paperboard sheet 1 on the glue machine side of the cutting section is suctioned and held by the suction box 26. Next, cylinder 29,2
Inject air into the rod side of 9', exhaust air from the head side, and move the suction box 26 to the shafts 28, 2.
Rotate around 8' and wait at a position away from the travel path. At this time, the rider roll of the A-flute single-sided corrugated paperboard sheet 1 is raised and feeding is stopped. Simultaneously with the cutting or with a slight time lag, the B flute rider roll 50 is lowered to pull out the B flute single-sided corrugated sheet 52 stored on the bridge. At the same time, air is introduced into the head side of the cylinders 44, 44', and when the cylinders 44, 44' are extended, the suction box 34 rotates around the shaft 35, and the tip 49 of the B flute single-sided corrugated sheet that was previously held by suction is rotated.
is pressed against the running liner 6 whose running path is being changed by the guide rolls 23. At the same time as the pressing, the suction pressure of the suction box 34 is cut off by a damper or the like, and the B flute single-sided corrugated sheet 52 is moved by the frictional force with the liner 6 and the B flute glue roll 53 and the rider roll 50.
It is sent to the double phaser entrance. (See Figure 4 C) When the B flute single-sided corrugated sheet 52 is fed to the double facer entrance, the cylinder 24,
Inject air into the rod side of 24', 25, 25', exhaust the air from the head side of each cylinder, retract the cylinders 24, 24', 25, 25', and return the guide roll 23 from the B position to the N position. The series of paper splicing operations is completed. (Status shown in Fig. 4 D) Next, the order change from A flute to AB flute shown in Fig. 5 A and B will be explained. After passing through the states shown in Figure 4 A and B, the B flute rider roll 50 is lowered and the B flute stored on the bridge is
When the flute single-sided corrugated sheet 52 is pulled out and air is injected into the head side of the cylinders 44, 44' to extend the cylinders 44, 44', the suction box 34 rotates around the shaft 35, and the B flute, which has been suctioned and held in advance, is rotated. The leading edge 49 of the single-sided corrugated cardboard sheet is pressed against the running liner 6 whose running path is being changed by the guide rolls 23. At the same time, the suction pressure of the suction box 34 is cut off by a damper or the like. The B flute single-sided corrugated sheet 52 is sent to the double facer entrance by the frictional force with the liner 6, the B flute glue roll 53, and the rider roll 50. Therefore, at the entrance of the double facer, the A flute single-sided corrugated sheet 1, the B flute single-sided corrugated sheet 52, and the liner 6 are laminated in this order. (The state shown in FIG. 5A) Next, the same operation as in FIG. 4D is performed to move the guide roll 23 to the N position.
(Status shown in FIG. 5B) Next, the order change from the B flute to the A flute shown in FIGS. 6A to 6D will be explained. The state shown in FIG. 6A is the same as the state shown in FIG. 4D, and B-flute corrugated cardboard sheets are being produced. That is, the guide roll is waiting at the N position, and the cylinders 24, 2
Air enters the rod side of cylinders 4', 25', and 25', and each cylinder is in a contracted state. A flute single-sided corrugated sheet tip 51 is suction box 26
The A flute rider roll 55 of the glue machine is raised. Now, air is introduced into the head side of the cylinders 24, 24', and when the cylinders 24, 24' are extended, the arms 10, 10' rotate around the support shafts 11, 11', and the sprocket wheels 13, 13' rotate around the support shafts. Since it is fixed to 11, 11' and does not rotate, sprocket wheels 13, 13'
The winding angle phase of the upper chains 42, 42' changes,
This causes the sprocket wheels 16, 16' to rotate counterclockwise according to the tooth ratio. As a result, the levers 19, 19' fixed to the shaft 15 rotate in the same direction as the sprocket wheels 16, 16', and the guide roll 23 is moved from the N position to the A position with the cylinders 24, 24' extended to their full strokes. move it to This changes the running path of the liner 6. (The state shown in Fig. 6B) From the above state, air is introduced into the head side of the cylinders 44, 44', the cylinders 44, 44' are extended, the suction box 34 is rotated around the shaft 35, and the knife 30' is used to Cut the flute single-sided corrugated sheet 52. At the same time, the glue machine side of the B flute single-sided corrugated sheet 52 is held by suction on the suction box 34. and cylinder 4
By shortening 4 and 44', the suction box is made to wait at a position away from the running road.

Lowering the A flute rider roll 55 simultaneously with the cutting or with a slight time lag;
The A-flute single-sided corrugated sheet 1 stored on the bridge is pulled out and sent out by the A-flute glue roll 4 and the rider roll 55, air is introduced into the head side of the cylinder 32, and the swing arm 27 is moved around the shaft 31. , 27' in the direction of the guide roll 23, and
6. Stop with a gap between the lower surface and the guide roll 23.

At the same time as stopping, air is introduced into the head side of the cylinders 29, 29', the cylinders 29, 29' are extended, and the suction box 26 is rotated in the direction of the guide roll 23 around the shafts 28, 28'. The tip 51 of the A-flute single-sided corrugated sheet 1 held by suction is extended to the running liner 6. At the same time as pressing, the suction pressure is cut off by a damper, etc. The A-flute single-sided corrugated paperboard sheet 1 is fed into the double facer entrance section by the frictional force with the liner 6, the glue roll 4, and the rider roll 55. (See Figure 6C) Next, air is introduced into the rod side of the cylinder 32, the cylinder 32 is retracted, the swing arms 27, 27' are rotated in the opposite direction, and the suction box 26 is returned to its original position. The order change is completed by retracting the cylinders 24, 24' and returning the guide roll 23 from the A position to the N position. (Status shown in Figure 6 D) Next, from the B flute shown in Figure 7 A and B,
Explaining the order change to AB flute. After passing through the states of A and B in FIG. 6, the rider roll 55 for the A flute is lowered, and the A
While pulling out the flute single-sided corrugated sheet 1, the cylinder 32 is extended and the swing arms 27, 27' are swung about the shaft 31 in the direction of the guide roll 23 which is moving to the A position, creating a slight gap between the swing arm 27 and 27' and the guide roll 23. hold it and stop it. At the same time as stopping, the cylinders 29 and 29' are expanded with air, and the suction box is rotated in the direction of the guide roll 23 around the shafts 28 and 28', thereby pushing the tip of the A-flute single-sided corrugated sheet 1 to the running B-flute corrugated sheet. wear. Simultaneously with the pressing, the suction pressure of the suction box 26 is cut off by a damper or the like. (See Fig. 7A) Next, the cylinder 32 and the cylinders 24, 2
4' and return the suction box 26 and guide roll 23 to their original positions to complete the order change. (Status shown in FIG. 7B) Next, the order change from AB flute to A flute shown in FIGS. 8A to 8C will be explained. Figure 8A shows the state in which AB flute corrugated board is being produced. From this state, the cylinders 44, 44'
Stretch out the suction box 34 and rotate it around the shaft 35 to remove the B flute single-sided corrugated sheet 5.
2 is cut with a knife 30'. At the same time, the rider roll 50 is raised and the tip 49 of the B flute single-sided corrugated sheet 52 on the glue machine side is raised.
is suctioned and held by the suction box 34.
(See FIG. 8B) Then, by retracting the cylinders 44, 44' and returning the suction box 34 to its original position, the order change is completed. (Status shown in FIG. 8C) Next, the order change from AB flute to B flute shown in FIGS. 9A and 9B will be explained. Said 8th
The cylinders 29 and 29' are extended from the state shown in FIG. At the same time, the rider roll 55 is raised and the A-flute single-sided corrugated paperboard sheet 1 on the glue machine side is suctioned and held by the suction box 26. (See FIG. 9A) Then, the cylinders 29, 29' are retracted to return the suction box 26 to its original position, completing the order change.

In this way, according to this embodiment, the order change between the A flute, B flute, and AB flute can be performed mechanically and automatically as described above, so that it is not necessary to have workers perform dangerous work as in the past. In addition, the work speed increases, and the production efficiency of corrugated cardboard sheets increases.

[Brief explanation of the drawing]

FIG. 1 is a schematic explanatory diagram showing a part of a glue machine and a double facer of a conventional corrugated board sheet manufacturing device, and FIG. 2 is a partially cutaway plan view showing an automatic splicing device according to an embodiment of the present invention. Figure 3 is A of Figure 2.
- Side explanatory view developed along the A cross section, 4th
Figures 9 through 9 show the operation of this embodiment, Figures 4 A through 2 are explanatory diagrams showing the order change from A flute to B flute, and Figure 5 A and B are explanatory diagrams showing the order change from A flute to AB flute. Figure 6 A to D are explanatory diagrams showing the order change from B flute to A flute. Figure 7 A and B are explanatory diagrams showing the order change from B flute to AB flute. Figures A to C are explanatory diagrams showing order change from AB flute to A flute, No. 9
Figures A and B are explanatory diagrams showing an order change from an AB flute to a B flute. 1, 52... Single-sided cardboard sheet, 6... Liner, 23... Guide roll, 26, 34... Suction box, 30, 30'... Knife.

Claims (1)

[Claims] 1. Two single facers each forming single-sided corrugated cardboard sheets with different tier sizes, and two vertically gluing means each applying glue to the corrugated top of the single-sided corrugated sheet from each of the single facers. A corrugated board manufacturing apparatus comprising a machine, a liner supply means for supplying a liner below the single-sided corrugated sheet, and a double facer that press-bonds the liner with the glued single-sided corrugated sheet supplied from the glue machine to form a corrugated sheet. , one end is disposed on the running path of the single-sided corrugated cardboard sheet from the upper gluing means and is swingable in the vertical direction about the other end toward the running path of the single-sided corrugated cardboard sheet from the lower gluing means. A swing arm is provided, a suction holding means is provided at the tip of the swing arm so as to be swingable in the vertical direction about the upstream end in the sheet running direction, and a suction holding means is provided at the downstream end of the suction holding means that protrudes downward. a first cutting/holding means having a fixed cutting means, and a suction device provided on the traveling path of the single-sided corrugated cardboard sheet from the lower gluing means so as to be swingable in the vertical direction about the upstream end in the sheet traveling direction. A second cutting and holding means having a cutting means protruding downward and fixed to the downstream end of the holding means and the suction and holding means, and a second cutting and holding means disposed below the liner running path and supported so as to be swingable in the vertical and longitudinal directions. a guide roll that is attached to the cut-off arm and can change the travel path of the liner and work with the suction and holding means of each of the cutting and holding means to pressure-bond the liner to the one-sided corrugated sheet held by the suction and holding means. An automatic paper splicing device characterized by: