JP3507066B1 - Die cutter unit and folding unit for sheet-like work - Google Patents

Abstract

An object of the present invention is to facilitate die exchange in a die cutter unit constituting a box making machine, stably transport a sheet-like work at the time of die exchange, and prevent transfer of chips generated in the die cutter unit to a folding unit. SOLUTION: The front end of a feeder belt of a feeder conveyor unit D10 provided in front of a die cylinder Ds is configured to be movable, and a feeder belt is used instead of the die cylinder Ds retracted away from the anvil cylinder As when exchanging a cutting die. To the anvil cylinder As, the anvil cylinder As and the feeder belt forcibly convey the sheet-like work W1, and the folding belts V2a, V2b of the folding unit FU, which is provided after the die cutter unit D, on the downstream side. Opening / closing operation is possible with a pulley as a fulcrum, and folding belts V2a and V2b are used for cutting die exchange.
Is withdrawn from the die cylinder Ds.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a corrugated board box making machine or the like, and a die cutter unit for a sheet-like work for cutting a predetermined position of a sheet-like work such as a corrugated board sheet, and a folding unit for a sheet-like work for bending the sheet-like work. Regarding

[0002]

2. Description of the Related Art A box-making machine for manufacturing cardboard boxes and the like supplies a sheet-like work (cardboard sheet in a cardboard box-making machine) which is a raw material from an upstream side, and goes through each process such as printing, ruled lines and punching. It is assembled into a box. Sheet-like works are stacked on the table of the paper feeding unit, and the sheet-like works fed from the paper feeding unit are sent to the printing unit. The printing unit is usually composed of a plurality of units, and multicolor printing is performed through each printing unit. A feeder conveyor unit for sequentially feeding the sheet-like work to a printing unit in a subsequent process is installed between the adjacent printing units. The feeder conveyor unit is equipped with a circulation drive type upper feeder belt and a lower feeder belt with a conveyance path sandwiched between them. The printed sheet-like work is sequentially fed, and the ruled lines (crees) for the next process are added. Units (also called crease units), slotter units, die cutter units, etc. In addition, there are those arranged in the slotter unit on the downstream side of the die cutter unit, those in which the sheet-like work is slottered, and there are cardboard box making machines in which ruled lines for folding are provided. In addition, there is a corrugated board box making machine in which a die cutter unit is provided with slotting and folding ruled lines. After being conveyed to the die cutter unit, cutting such as punching is performed when passing between the upper die cylinder and the lower anvil cylinder. An upper feeder conveyor unit having a circulating drive type upper feeder belt that feeds the sheet-like work conveyed from the slotter unit to the die cutter unit between the die cylinder and the anvil cylinder, and a circulating drive type lower feeder. A lower feeder conveyor unit having a belt is arranged. The sheet-shaped work that has been cut or punched is bent by a folding unit connected to the downstream side thereof, and sent to the delivery unit to be discharged.

As conventional publications related to the die cutter unit and the folding unit of such a sheet-like work, for example, the following technology has been disclosed.

[0004]

[Patent Document 1] JP-A-7-125109

[0005]

[Patent Document 2] JP-A-7-156304

[0006] In Patent Document 1, in a folding unit for a sheet-shaped work, a die cutter is provided so that a tip end portion of a folding belt can be bent and a creaser unit and a die cutter unit can be moved rearward in a sheet-shaped work conveyance direction. This facilitates replacement work of the die for punching the unit.

[0007] Patent Document 2 is a corrugated board sheet transfer device in a printing line. The printing line has a first feed belt device located on the printing cylinder side and a second feed belt device located on the press contact cylinder side. An apparatus is installed, and a corrugated cardboard sheet is sandwiched by a first feeding belt apparatus and a second feeding belt apparatus from above and below to perform a transfer operation. The first feed belt device includes a fixed first conveyor belt and a movable second conveyor belt that is attached to the first conveyor belt. Then, when the printing cylinder is raised to replace the block copy and the driving force cannot be applied to the cardboard sheet by the printing machine itself, the second conveyor belt is printed. It is assumed that the corrugated cardboard sheet can be stably transferred by advancing to the cylinder (pressing cylinder) side and sandwiching the corrugated ball sheet between the second conveyor belt and the pressing cylinder to drive it.

[0008]

By the way, conventionally, it takes a lot of time to replace the die for cutting the die cylinder in the die cutter unit. That is, depending on the type of sheet-like work, hand holes, air holes, etc. are cut, and the cutting die is exchanged using a dedicated tool, but there are also those in which cutting such as punching is not performed. Further, even if cutting such as punching is required, the shape and size of the cutting are different depending on the production order depending on the type of the sheet-shaped work. Conventionally, when cutting such as punching is different between one sheet-like work and the next sheet-like work, all the processes including the printing process are stopped and the cutting die is replaced, but the sheet without punching or other cutting is performed. When a sheet-like work that requires cutting such as punching comes after the work-like work, stopping all the steps lowers the work efficiency.
On the other hand, when a sheet-like work that does not require cutting such as punching comes next to a sheet-like work that requires cutting such as punching, stopping all the steps reduces work efficiency. However, in the conventional die cutter unit, the fact is that no means for preventing the reduction of the work efficiency is constructed.

Further, there is a problem that it is difficult to replace the cutting die. That is, in the die cutter unit, since the die cylinder is arranged above the anvil cylinder, an operator performing the cutting die replacement work needs to ride on a work table or the like to replace the cutting die, In addition, when a folding unit is arranged next to the die cutter unit on the downstream side, the worker
The cutting dies are replaced by entering between the die cutter unit and the folding unit.However, since the upper ends of the upper folding belt and the lower folding belt extend close to the die cutter unit, The belt interferes with the replacement work of the cutting die. There are some die cutter units that can move the whole unit by rollers or rails, but there are also fixed types that cannot move.Especially with the latter fixed type, the above replacement work is troublesome. Become.

Therefore, as in the above-mentioned Patent Document 1, the tip of the folding belt is made bendable to facilitate the replacement work of the cutting die by the replacement worker. However, in Patent Document 1, not only is it necessary to adjust the tension by a tension roller (not shown) in order to make the front end of the folding belt bendable and to provide the folding belt itself with a mechanism for folding around the hinge, it is shown in the drawings. There is no choice but to have an extremely complicated structure such as making the tip extendable by an air cylinder that is not installed. Moreover, if a folding mechanism is adopted for the folding belt itself, the folding belt is placed close to the die cutter unit, and the chips produced by cutting such as punching in the die cutter unit are sandwiched between the folding belt. However, there is a problem that the chips cannot be discharged, the chips hinder the folding by the folding belt, and cause the failure of the folding unit. An air blower for blowing off the chips is provided, but it is not effective because it gets into the folded state.

On the other hand, with regard to the technique disclosed in Patent Document 2, it may be considered to employ it for the upper feeder conveyor unit or the lower feeder conveyor unit of the die cutter unit, but the following difficult problems occur. That is, the first conveyor belt (feeder belt) and the second conveyor belt (feeder belt) are
It is understood that the peripheral speeds of the two conveyor belts are mechanically or electrically controlled so as to be exactly the same because they drive the same corrugated board sheet in cooperation. In this state, the speed change in the operation in which the second conveyor belt starts the advancing operation toward the printing cylinder (printing cylinder) and stops at the predetermined position is a change from the acceleration operation to the deceleration operation. In this case, the peripheral speed of the second conveyor belt relative to the corrugated cardboard sheet is the peripheral speed of the conveyor belt itself plus the speed change of the advancing operation of the second conveyor belt. Therefore, the peripheral speed of the second conveyor belt during the advancing operation changes intricately and does not match the peripheral speed of the first conveyor belt. When the peripheral speeds of the two conveyor belts do not match, the straightness of the corrugated cardboard sheet to be conveyed is not guaranteed, and as a result, the corrugated cardboard sheet passing through during the advancing operation of the second conveyor belt is not processed in the subsequent process. The possibility of printing misalignment is extremely high. Further, in order to prevent this, if measures are taken to stop the box making machine during the advancing operation of the second conveyor belt, the work efficiency will be reduced. As a prior art of the conventional publication, there is mentioned one in which one conveyor belt (feeder belt) is moved back and forth as a whole, but in this example, in addition to the overall back and forth movement, the peripheral speed of the conveyor belt itself is also increased. Is added to the peripheral speed, and changes in the same complicated way.

Therefore, a first object of the present invention is to enable efficient and easy replacement of the cutting die with respect to the die cylinder of the die cutter unit, and to control the peripheral speed of the feeder belt with respect to the sheet-like work. It is an object of the present invention to provide a die cutter unit for a sheet-shaped work, which is maintained at a constant value to effectively prevent the sheet-shaped work from being displaced in the subsequent process. A second object of the present invention is to provide a folding unit for a sheet-like work, which is capable of discharging chips and efficiently and easily exchanging a cutting die.

[0013]

In order to solve the above-mentioned problems, a die cutter unit for a sheet-like work according to claim 1 of the present invention is a die-cylinder unit and an anvil cylinder which face each other with a sheet-like work conveying path interposed therebetween. And an upper feeder conveyor unit having a circulating drive type upper feeder belt for feeding the sheet-like work between these cylinders, and a circulating drive type lower feeder facing the upper feeder conveyor unit with the conveying path for the sheet-like work interposed therebetween. A die cutter unit for a sheet-like work, which comprises a lower feeder conveyor unit having a belt, and a cutting die for cutting a predetermined portion of the sheet-like work on the outer periphery of the die cylinder is attached and detached, and the die cylinder is arranged below the anvil cylinder. And the lifting structure that moves the die cylinder up and down. The descending make die cylinder and a structure to approach the front of the lower feeder belts of the lower feeder conveyor unit to a position near the other side of the anvil cylinder, said lower feeder conveyor unit, the
A front end pulley that forms the front end and a rear end that forms the rear end
Pulleys and a single feeder hung between these pulleys
Keep the tension of the belt and this feeder belt within a certain range
Equipped with a tension pulley to change the position of the rear end pulley.
Only the front end pulley near the anvil cylinder without
It is characterized by making it close to the side position .

According to a second aspect of the present invention, there is provided a die cutter unit for a sheet-shaped work, and a die cylinder and an anvil cylinder which face each other in a vertical direction with a sheet-like work conveying path interposed therebetween, and the sheet-like work is sent between these cylinders. An upper feeder conveyor unit having a circulation drive type upper feeder belt, and a lower feeder conveyor unit having a circulation drive type lower feeder belt which is opposed to the upper feeder conveyor unit in the vertical direction with a conveyance path for a sheet-like work interposed therebetween. In a die-cutting unit for a sheet-like work, in which a cutting die for cutting a predetermined position of the sheet-like work is attached to and detached from the die cylinder, the die cylinder is arranged below the anvil cylinder, and the die cylinder is moved up and down. Lifting structure and position near the anvil cylinder In a structure to approach the front end of the feeder belt of the lower feeder conveyor unit, the
The lower feeder conveyor unit forms its front end
A front end pulley, a rear end pulley forming a rear end, and a front end
The relay pulley, which is placed between the pulley and the rear end pulley,
Front end side feeder rack that is hung between the end pulley and the relay pulley
And the rear end side that is hung between the relay pulley and the rear end pulley.
Equipped with a feeder belt, with the front pulley centered on the relay pulley
To move the front end side feeder belt up and down
It is characterized by

According to the first or second aspect of the present invention, when a sheet-like work that does not need to be cut comes next to a sheet-like work that requires cutting such as punching, the die cylinder is lowered by an elevating structure. , If the front end of the lower feeder belt of the lower feeder conveyor unit is brought close to the position near the anvil cylinder on the side opposite to the lowering side, even if a sheet-like work that does not need cutting such as punching comes next, It becomes possible to carry without stopping the carrying, and the cutting die may be exchanged until the next sheet-like work that needs cutting such as punching comes. Further, by disposing the die cylinder below the anvil cylinder, an operator who exchanges the cutting die can perform the exchange operation at a position near the ground or floor.

According to the first aspect of the invention, the distance between the front end pulley and the rear end pulley can be changed by operating the tension pulley to loosen the feeder belt. The relative peripheral speed of the feeder belt hung between the front end pulley and the rear end pulley changes when moving the front end pulley and the rear end pulley together, but it is possible to move only the front end pulley or only the rear end pulley. Does not change. This is because the peripheral speed of the feeder belt in relation to the sheet-like work is kept constant by the pulley on the fixed side. Therefore, if only the front end pulley is moved closer to the position near the anvil cylinder without changing the position of the rear end pulley of the feeder conveyor unit, the distance between the anvil cylinder and the feeder conveyor unit becomes a range in which the sheet-shaped workpiece can be fed. It is shortened, and the sheet-like work can be stably fed to the folding unit in the subsequent process without using the driving force (conveying force by rotation) of the die cylinder, that is, by passing the die cylinder.

[0017]

According to the second aspect of the present invention, the lower feeder conveyor unit includes a front end side feeder belt hung between the front end pulley and the relay pulley, and a rear end hung between the relay pulley and the rear end pulley. And a side feeder belt. Then, when the front end side feeder belt is tilted up and down around the relay pulley, the front end position of the feeder conveyor unit when the front end side feeder belt and the rear end side feeder belt are aligned in a straight line is The position of the pulley, and the operation front end position of the feeder conveyor unit when the front end side feeder belt and the rear end side feeder belt are in a bending posture is the position of the relay pulley. That is, the position of the front end of the feeder conveyor unit changes depending on whether the die cylinder is used or not. The relay pulley is placed at a fixed position, and the same constant peripheral speed is maintained between the front end side feeder belt and the rear end side feeder belt via the relay pulley.

A folding unit for a sheet-like work according to claim 3 of the present invention is the folding unit according to claim 1 or claim 1.
A folding unit for bending the sheet-like work is arranged on the downstream side of the die cutter unit of the sheet-like work described in 2 , and the folding unit is a circulation drive type upper folding for bending the sheet-like work conveyed from the die cutter unit. A belt, a lower folding belt, and a circulating drive type upper receiving belt and a lower receiving belt which are arranged in parallel with the upper folding belt and the lower folding belt, respectively.

According to the present invention, chips are produced when the sheet-like work is cut or punched by the die cylinder of the die cutter unit, and the chips are placed on the upper receiving belt and the lower receiving belt, The sheet will be discharged at the end portion, and will not be carried on the upper folding belt and the lower folding belt that are arranged in parallel with the upper receiving belt and the lower receiving belt. Therefore, in the folding unit, it is possible to prevent the bending work of the sheet-like work from being obstructed by the chips.

According to a fourth aspect of the present invention, in the folding unit for a sheet-shaped work, at least the lower receiving belt of the upper receiving belt and the lower receiving belt is based on the invention of the third aspect. An opening / closing unit that opens and closes using one downstream pulley of a pair of upstream and downstream pulleys around which the belt is wound as a fulcrum is provided, and the downstream pulley is the most upstream of the lower folding belt. It is characterized in that it is the same pulley as the tip pulley on the side.

According to this invention, since the upper receiving belt and the opening / closing means for opening / closing at least the lower receiving belt of the lower receiving belt are provided, the cutting die is attached to and detached from the outer periphery of the die cylinder of the die cutter unit. In this case, when at least the lower receiving belt is opened by this opening / closing means, a space for a worker to enter is secured between the folding unit and the die cutter unit, so the upper folding belt and the lower folding belt are replaced. It does not interfere with work. Further, since the downstream pulley is the same pulley as the most upstream end pulley of the lower folding belt, the lower receiving belt is driven by driving the lower folding belt, and the lower pulley is driven via the distal pulley. The same constant peripheral speed is maintained for the receiving belt and the folding belt. Therefore, even if the upper side receiving belt and the lower side receiving belt are arranged, there is no fear of misalignment.

[0023]

Embodiments of the present invention will be described below with reference to the drawings.

(Corrugated board box making machine according to the first embodiment) In this embodiment, the present invention is applied to a corrugated board box making machine for manufacturing a cardboard box from a corrugated board sheet. As shown in FIG. 1, a sheet feeding unit Q for supplying stacked sheet-like works W1, four printing units P1 ... P4 for printing, a slotter unit AD for applying ruled lines (creases) and slotter processing, Die cutter unit D and folding unit FU
And a delivery unit (not shown) is arranged in order.

Sheet-like works W1 are stacked on the feed table F2 of the paper feed unit Q in the corrugated board box making machine, and the sheet-like works W1 fed from the paper feed unit Q are sent to the printing units P1 ... P4, Multi-color printing is performed through the respective printing units P ... P4. Then, through the slotter unit AD, the die cutter unit D
Sent to. After that, bending processing is performed in the folding unit FU, which is stacked and discharged in the delivery section. The die cutter unit D may be arranged before the slotter unit AD, that is, on the upstream side. Rollers C and rails are provided on the back surfaces of the frame F5 of the slotter unit AD and the frame F6 of the die cutter unit D, and each unit is movable in the unit connecting direction. A worker who enters the floor G between the position of the die cutter unit D and the position of the folding unit FU of the present embodiment for exchanging the cutting die with the die cylinder Ds arranged on the lower side. A pit 5 for K is formed.

(Printing unit of the first embodiment) Four printing units P1 ... P4 are installed in the printing section P, and at the printing section P of the sheet-like work W1, a maximum of four-color printing is performed. Is possible. Each printing unit P1
... P4 is a type of printing on the surface of the sheet-like work W1. Therefore, the printing cylinder R1 which is vertically movable is provided above the press contact cylinder R2. The pressure contact cylinder R2 in each of the printing units P1 ... P4 is attached to the fixed frame F3, and the printing cylinder R1
Is attached to a movable frame F4 that moves up and down with respect to the fixed frame F3. That is, the printing cylinder R
1 moves up and down depending on the up and down movement of the movable frame F4. An ink roller R3 is provided side by side with the printing cylinder R1 so that ink can be continuously supplied during operation. The ink roller R3 moves up and down along with the printing cylinder R1. Further, by interposing the vertical positioning device J1, the feeder conveyor units 10 and 50 can optimize the vertical positional relationship between the printing cylinder R1 and the pressure contact cylinder R2 of the printing unit P1. The upper and lower feeder conveyor units D10 and D50 arranged between the printing unit P and the die cutter unit D, which will be described with respect to the die cutter unit D, are provided between the paper feeding unit Q and the printing unit P.
And between the printing units P1 ... P4 of the printing unit P. These feeder conveyor units
Reference numerals 10 and 50 are used in FIGS.

(Slotter Unit of First Embodiment) A slotter unit AD is arranged between the printing unit P and the die cutter unit D. In this slotter unit AD, a pair of upper and lower upstream cylinders AD1, A
A ruled line is provided between D2, slotter processing is performed between the pair of upper and lower cylinders AD3 and AD4 on the downstream side, and then the line is conveyed to the die cutter unit D. The pair of cylinders AD1 and AD2 and the pair of cylinders AD3 and A
A pair of upper and lower relay cylinders AD5 and AD6 are arranged between D4 (FIG. 3).

(Die Cutter Unit of the First Embodiment) The die cutter unit D is for cutting a sheet-like work W1 by punching a hand hole, an air hole or the like, and includes a die cylinder Ds and an anvil cylinder As. , A lower feeder conveyor unit D10 having a lower feeder belt D17 of a circulating drive type for feeding the sheet-like work W1 between the cylinders Ds and As, and an upper feeder conveyor unit D5 having an upper feeder belt D57 of a circulating drive type.
It has 0 and. The die cylinder Ds and the umbilical cylinder As are positively driven in a state where the conveyance path of the sheet-shaped work W1 is sandwiched from the up and down direction. Die cylinder Ds
Has a large number of screw holes engraved on its outer peripheral surface, and a special blade (cutting die) Dc can be attached using these screw holes. The anvil cylinder As sandwiches the sheet-like work W1 with the die cylinder Ds,
Functions as a backing plate when using a blade.

The die cylinder Ds and the anvil cylinder As are, as shown in FIG. 2, left and right side plates Fd1 and Fd.
It is placed between two. Left and right side plates Fd1, Fd2
Are each composed of a pair of fixed plates Fc1 and a movable plate Fc2 which is vertically movably assembled to the fixed plate Fc1, and the movable plate Fc2 is superposed on the outer side of the fixed plate. The pair of left and right movable plates Fc2 is vertically driven by the driving means M. The drive means M is a vertical screw shaft M screwed into a screw bracket M5 fixed to each movable plate Fc2.
By rotating 4 the movable plate Fc2 is slid up and down, and as a result, the die cylinder Ds whose both ends are supported by the pair of movable plates Fc2 is moved upward or downward. The lower end of the feed screw shaft M4 that drives the left and right movable plates Fc2 is connected to both ends of a common power transmission shaft M2 horizontally provided between the side plates Fd1 and Fd2 via a reduction gear box M3. The power transmission shaft M2 is driven at a predetermined reduction ratio by the meshing of a gear g2 attached at its intermediate position and a pinion gear g1 attached to the output shaft of the drive motor M1.

The upper and lower feeder conveyor units D10 and D50 are arranged on the upstream side of the die cylinder Ds and the anvil cylinder As, and sandwich the printed sheet-like work W1 between the die cylinder Ds and the anvil cylinder As. Transport between. The upper and lower feeder conveyor units D10 and D50 are arranged in a pair of top and bottom with the conveyance path of the sheet-like work W1 sandwiched between them to form a pair of left and right in the width direction of the sheet-like work W1. (FIGS. 2 and 3). Therefore, the sheet-like work W1
Is gripped from two positions in the width direction from above and below and sent sequentially.

Four feeder conveyor units D10,
Regarding the relationship of D50, a pair of upper and lower feeder conveyor units D1 located on the right or left of the sheet-like work W1.
0, D50 and a pair of upper and lower feeder conveyor units D10, D50 located on the other side have a symmetrical structure as a whole, and an upper feeder conveyor unit D50 and a lower feeder conveyor unit D10 corresponding to each other in the vertical direction.
Is an asymmetric structure. Then, the lower feeder conveyor unit D10 according to the present embodiment is installed as a unit that drives the back surface of the sheet-shaped work W1 on the lower die cylinder Ds side facing the upper anvil cylinder As. However, when the die cylinder Ds is installed on the upper surface side of the sheet-like work W1, the lower feeder conveyor unit D10 of the present embodiment is installed on the upper surface side of the sheet-like work W1.

The lower feeder conveyor unit D10 shown in this embodiment comprises a lower feeder belt D17 wound around a large number of pulleys (FIGS. 2 and 3). The lower feeder belt D17 is, for example, an endless belt having a narrow width whose surface is covered with a material having a large friction coefficient, and other members contacting the surface can be additionally moved by frictional force. .

The lower feeder conveyor unit D10 is formed with a front end pulley D11 which forms a front end of the lower feeder conveyor unit D10 when the lower feeder belt D17 is wound, and a rear end of the lower feeder conveyor unit D10. A rear end pulley D15, a drive pulley D13 that is positively driven via a power transmission system,
A tension pulley D12 that keeps the tension of the lower feeder belt D17 constant and a guide pulley D14 that regulates the traveling path of the lower feeder belt D17 are provided.

These pulleys are the tension pulley D1.
With the exception of No. 2, the tension pulley D12 is in contact with the inner peripheral surface of the lower feeder belt D17 so as to open the lower feeder belt D17 outward, but the tension pulley D12 is in contact with the outer peripheral surface of the lower feeder belt D17. The lower feeder belt D17 is mounted between the front end pulley D11 and the drive pulley D13 in such a manner that the lower feeder belt D17 is pushed inward via a spring element. Further, the drive pulley D13, the rear end pulley D15, and the guide pulley D14 are attached to a fixed frame (not shown), while the front end pulley D11 and the tension pulley D12 are common with a predetermined slide amount in the horizontal direction. It is attached to the slide frame. As a result, the front end pulley D11 and the tension pulley D12 simultaneously move by the same amount via the common slide frame.

On the other hand, the upper feeder conveyor unit D50, which is installed above the sheet-shaped work W1 with the conveyance path interposed, has a front end pulley D51, a rear end pulley D55,
The drive pulley D53 and the tension pulley D52 are provided. The upper feeder belt D57 is wound around the front end pulley D51, the rear end pulley D55, and the drive pulley D53 so as to surround the drive pulley D53. This is the configuration. The upper feeder conveyor unit D50 and the lower feeder conveyor unit D10 maintain a proper gap corresponding to the thickness of the sheet-like work W1 to be handled, and the feeder belt belt D5.
7, D17 are arranged so as to face each other in the vertical direction, and are mechanically driven synchronously so that the peripheral speeds of both feeder belts are the same.

The structure of the feeder conveyor units D10 and D50 having the above-mentioned structure is similar to that of the paper feeding unit Q and the printing unit P.
, And between the printing units P1 ... P4 of the printing section P, but at these positions, the upper and lower feeder conveyor units D10, D50 are installed in reverse (Fig. 1).

(Folding Unit of First Embodiment) The folding unit FU is arranged adjacent to the downstream side of the die cutter unit D of the cardboard box making machine (FIGS. 1 and 4). This folding unit FU
Is for bending the sheet-like work W1 and is provided with an upper folding belt V1a and a lower folding belt V1b. These both belts V1a, V1
Nylon bar for folding while being transported by b
Fold along the left and right steel guides. Two upper folding belts V1a and lower folding belts V1b are arranged in parallel to the left and right of the sheet-shaped workpiece W1 in the conveying direction, and are driven to circulate. Then, between the folding belts V1a and V1b and the die cutter unit D, the upper receiving belt V2a and the lower receiving belt V2b are provided.
Are arranged. The upper side receiving belt V2a and the lower side receiving belt V2b are arranged in two on the left and right, and are composed of four in total. Two upper side receiving belts V2a are arranged in parallel on the left and right outside of the upper side folding belt V1a. Is 2
Two lower receiving belts V2b are arranged in parallel on the left and right outside of the lower folding belt V1b of the book (FIGS. 7 and 8). The upper receiving belt V2a and the lower receiving belt V2b are cyclically driven between a pair of upstream and downstream pulleys.
A pair of upper and lower folding belts V1a and V1a are gripped in a pair in the width direction of the sheet-like work W1 punched by
Send to 1b. Upper receiving belt V2a and lower receiving belt V
The reference numeral 2b circulates between the upstream pulleys 63 and 65 and the downstream pulleys 61 and 62, respectively, and the uppermost front end pulley 61 of the upper folding belt V1a and the lower folding belt V1b. , 62, respectively, and are circulated and driven. That is, in the upper folding belt V1a and the lower folding belt V1b, the positions of the most upstream end side pulleys 61 and 62 are closest to the die cutter unit D. The pulleys 61 and 62 on the downstream side of the V2a and the lower receiving belt V2b are the same, and therefore, the belts are mounted so as to overlap each other. Reference numeral 64 is an auxiliary pulley, and the upper or lower folding belts V1a and V1b are located corresponding to the position of the auxiliary pulley 64.

Further, the upper folding belt V1a
The front end side of the lower folding belt V1b is opened and closed. That is, as shown in FIGS. 5 and 6, a pair of side surface frames 60 is attached to each side surface, and the upstream side pulley 63 and the downstream side pulley 61 are axially attached to the side surface frames 60. An air cylinder rod 67a, which is an opening / closing means 67, is connected to the frame 60. Accordingly, when the air cylinder is driven, the side frame 60 opens and closes the pair of side frames 60 with the positions of the pulleys 61 and 62 on the downstream side as fulcrums, and thus the upper side receiving belt V2a and the lower side receiving belt V2a.
2b opens and closes. In the present embodiment, the opening / closing operation of the upper side receiving belt V2a and the lower side receiving belt V2b is performed by raising / lowering the downstream pulleys 61 and 62 as fulcrums, that is, 90
By rotating the belt by one degree, it can be positioned at the most upstream side of the upper or lower folding belts V1a and V1b. As a result, a necessary and sufficient work interval L1 for the die exchange work is secured between the die cylinder Ds (FIG. 8).
The downstream pulleys 61, 62 are the most upstream tip pulleys 61, 61 of the lower folding belt V1b.
Since it is the same pulley as 62, the receiving belts V2a, V2 are connected via the front end pulleys 61, 62 at this fixed position.
b and the folding belts V1a and V1b maintain the same constant peripheral speed. Here, the opening / closing means 67 is
Even if only the lower receiving belt V2b is opened and closed, the worker K who replaces the cutting die Dc can easily perform the replacement work when working on the ground, floor, or the pit 5.

(Flow of Sheet-shaped Work) First, the sheet feeding unit Q, the printing units P1 ... P4, the slotter unit AD, and the die are placed in the order of the sheet-shaped work W1 to be produced before the production is started by the corrugated board box making machine. Set each location such as the cutter unit D. In the die cutter unit D, since the sheet-like work W1 that requires cutting such as punching is first sent, the cutting die Dc is attached to the outer peripheral surface of the die cylinder Ds. When such preparations are completed, the sheet-like works W1 set in the paper feeding unit Q are kicked out one by one toward the downstream side, and the printing unit is conveyed at a predetermined conveyance speed via the pair of feed rolls r2. Sent to P (FIG. 1). Feed roll r2
The sheet-like work W1 that has passed through is conveyed by being sandwiched between the upper feeder conveyor unit 10 and the lower feeder conveyor unit 50 installed between the paper feeding unit Q and the first printing unit P1 of the printing section P. It Then, the sheet-like work W1 that has reached the first printing unit P1 is sandwiched between the printing cylinder R1 and the pressure contact cylinder R2 to perform a predetermined printing, and at the same time, the sheet cylinder work W1 is succeeded by the printing cylinder R1 and the pressure contact cylinder R2. Is forcedly fed between the upper feeder conveyor unit 10 and the lower feeder conveyor unit 50. This operation is performed by the upper and lower feeder conveyor units 10 and 50 that receive the sheet-like work W1 and the second printing unit P.
It is repeated with the same contents in 2. At this time, the upper feeder conveyor unit 10 on the downstream side connected to the rear of the second printing unit P2 moves the front end pulley 11 to the rear end of the succeeding feeder conveyor units 10, 50 by the sliding operation of the slide frame 22 described above. It is displacing in the direction of approaching and waiting. At this time, the front end pulley 11 of the upper feeder conveyor unit 10 reaches a position directly above the press contact cylinder R2 in the third printing unit P3 that passes the sheet-shaped work W1 (FIG. 1, FIG.
(Figure 3).

The sheet-like work W1 on which the multi-color printing has been performed is provided with ruled lines at the cleaner portion (between the cylinders AD1 and AD2) of the slotter unit AD, and grooving is performed at the slotter portion (between the cylinders AD3 and AD4). Then, it is conveyed to the die cutter unit D.

Here, since the structures of the upper feeder conveyor unit 10 and the lower feeder conveyor unit 50 of the printing units P1 ... Are also arranged on the upstream side of the die cutter unit D, printing is performed by the printing units P1. Sheet work W1 is slotter unit AD
When it is conveyed to the die cutter unit D via the above, it is forcibly fed between the upper feeder conveyor unit D50 and the lower feeder conveyor unit 50 of the die cutter unit D having the above structure. In addition, the feeding structure here is
Since the structures of the upper feeder conveyor unit D10 and the lower feeder conveyor unit D50 of the die cutter unit D are the same, the sheet cutter work W1 of the die cutter unit D described later will be described as a feeding structure.

(Flow of Sheet-like Work in Die Cutter Unit) Next, the flow of sheet-like work W1 in the die cutter unit D will be described. Here, the sheet-like work W1 that needs cutting such as punching is printed and conveyed first (first), and the sheet-like work that does not require cutting such as punching is printed and conveyed second. The third description will be made assuming that the sheet-like work W1 that does not require cutting such as punching is printed and conveyed.

First, in the die cutter unit D, the sheet-like work W1 is sandwiched between the cutting die Dc and the anvil cylinder As arranged in the die cylinder Ds, and the sheet-like work W1 is cut or punched. Here, since the sheet-like work W1 that requires cutting such as punching is sent first, the cutting die Dc of the die cutter unit D performs cutting such as punching of hand holes and air holes. When cutting such as punching is completed,
Bending is performed in the folding unit FU on the downstream side and sent to the delivery unit.

When the first sheet-like work W1 passes through the die cutter unit D, the second sheet-like work W1 which does not require cutting such as punching is continuously sent. Means M
The movable plate Fc2 is slid downward to lower the die cylinder Ds, separate it from the umbili cylinder As, and extend the lower feeder belt D17 in the lower feeder conveyor unit D10 to almost the center position of the anvil cylinder As. When the lower feeder belt D17 is moved in the direction in which the lower feeder belt D17 is stretched by moving the front end pulley D11, a transport path is formed by the lower feeder belt D17 and the anvil cylinder As at the stop position, and a sheet is formed therebetween. Work W
1 is sandwiched and sent to the downstream side. Therefore, even if the sheet-like work W1 that does not need cutting such as punching is sent next to the sheet-like work W1 that requires cutting such as punching, it is not necessary to stop all the steps of the corrugated board box making machine. Even if the cylinder Ds is passed (lowering operation), it can be conveyed, and the cutting die Dc may be exchanged until the next sheet work W1 requiring cutting such as punching arrives. The cutting die Dc can be replaced in the pit 5 with a posture that facilitates replacement work with respect to the lowered die cylinder Ds.

Here, the lower feeder conveyor unit D
The tension pulley D12 in 10 is the front end pulley D
Since it is attached to the same slide frame as 11, it moves the same amount in the same direction as the front end pulley D11. However, the displacement of the front end pulley D11 at this time is in the direction to stretch the feeder belt D17, whereas the displacement of the tension pulley D12 is in the direction to loosen the feeder belt D17 (FIG. 3). Therefore, the tension of the feeder belt D17 does not change due to the displacement of the front end pulley D11. This means that the front end pulley D can be used without considering the change in tension of the feeder belt D17.
It means that the position of 11 can be easily changed.

Further, the lower feeder conveyor unit D1
The peripheral speed of the lower feeder belt D17 at 0 does not change before and after the movement of the front end pulley D11, and does not change even during the movement. Lower feeder belt D1
The peripheral speed of No. 7 is determined by the diameter of the drive pulley D13 and the number of rotations, and the front end pulley D11 and the rear end pulley D15.
This is because it does not depend on the interval between and.

Further, the front end pulley D11 and the rear end pulley D1
5 is fixed, the peripheral speed of the feeder belt D17 does not change even when the other pulley is moving. This is clear from the fact that even if one of the pulleys is moved, the rotation speed of the other pulley does not change. In the lower feeder conveyor unit D10 according to the present embodiment, the rear end pulley D
This action is realized by fixing 15 and moving only the front end pulley D11. Therefore, even if the front end pulley 11 is displaced while the sheet-like work W1 is passing, the sheet-like work W1 is conveyed at the set speed. This means that the front end pulley 11 can be moved without stopping the box making machine.

The front end pulley D11 of the lower feeder conveyor unit D10 that has advanced below the anvil cylinder As is driven so as to sandwich the sheet-like work W1 between it and the anvil cylinder As via the feeder belt D17 and feed it downstream. . That is, the front end pulley D1
1 is a sheet-like work W1 instead of the die cylinder Ds
Can be pressed against the anvil cylinder As. As a result, the sheet-like work W1 is positively driven by the feeder belt D17 and the anvil cylinder As to prevent the posture and the conveyance timing of the sheet-like work W1 from being deviated when the die cylinder Ds descends (passes). As a result, the deviation when using the subsequent printing units P3 and P4 is prevented. The distance (distance) between the front end pulley D11 and the anvil cylinder As at the time of the advancing operation is arbitrarily set. Generally, when the sheet-like work W1 to be handled is thin, it is preferable to set it to be narrow. This is because, until the sheet-shaped work W1 that has passed under the anvil cylinder As arrives at the subsequent folding unit FU, the drive is in the pushing-feeding state depending on the waist strength of the sheet-shaped work W1.

Subsequently, the sheet-like work W1 which requires cutting such as punching is sent. This step is the same as the case described at the beginning, and the driving means M drives the movable plate Fc.
By sliding 2 upwards, die cylinder Ds
To raise the lower feeder conveyor unit D1
This is performed by returning the lower feeder belt D17 at 0 to the original position. When the die cutter unit D finishes cutting such as punching, it is sent to the folding unit FU on the downstream side. When cutting such as punching is performed by the cutting die Dc of the die cylinder Ds, chips are generated but are discharged in the next step.

When the die cutter unit D finishes cutting such as punching, the die cutter unit D is sent to the folding unit FU on the downstream side for bending. When sent to the folding unit FU, the upper side receiving belt V2a and the lower side receiving belt V2b of the folding unit FU receive the cut sheet-like work W1 such as punching. The upper receiving belt V2a and the lower receiving belt V2b are the upper folding belt V1a.
And the lower folding belt V1b are juxtaposed with each other, so that even when chips are caught between the upper receiving belt V2a and the lower receiving belt V2b, the chips are
The trailing pulleys 61 and 62 are not discharged and fall, and do not move to the upper and lower folding belts V1a and V1b. The opening / closing means 67 that opens and closes so as to be flipped up also removes the chips placed on the upper receiving belt and the lower receiving belt.

(Die Cutter Unit of Second Embodiment) In this embodiment, the peripheral speed of the feeder belt is kept constant in relation to the sheet work W1, but a plurality of feeder belts D37 and D38 are used. It is another feeder conveyor unit D30 according to a configuration in which they are overlapped and circulated and driven (FIG. 9). In the present embodiment, the upper feeder conveyor unit D50 arranged above the feeder conveyor unit D30 has the same configuration as that of the first embodiment.

The feeder conveyor unit D30 includes a front end side feeder belt D37 hung between the front end pulley D31 and the relay pulley D33, and a rear end side feeder belt D38 hung between the relay pulley D33 and the rear end pulley D35. Equipped with. The relay pulley D33 is a double-hanging pulley that allows the two feeder belts D37 and D38 to be hung, and the front end side feeder belt D37 and the rear end side feeder belt D38 are hung with a position corresponding to the belt width. ing. Also, the front end side feeder belt D
37 and the rear end side feeder belt D38 are relay pulley D
It is synchronously driven by driving 33 axes.

In the feeder conveyor unit D30 of the present embodiment, the front end pulley D31 is moved in an arc around the relay pulley D33, that is, the front end side feeder belt D37 is moved up and down to move the front end of the feeder conveyor unit D30. The position can be changed alternatively. Specifically, when lowering the die cylinder Ds when exchanging the die Dc, the front end side feeder belt D37 is raised so that the front end pulley D31, the relay pulley D33, and the rear end pulley D35 are aligned.
Accordingly, the substantial front end position of the feeder conveyor unit D30 is set to the front end pulley D of the front end feeder belt D37.
You can advance to position 31. Conversely, by bending the front end side feeder belt D37 at the position of the relay pulley D33 and retracting it from the position directly below the anvil cylinder As, the substantial front end position of the feeder conveyor unit D30 can be retracted to the position of the relay pulley D33. it can. At this time, the lowered die cylinder Ds can be returned to the position directly below the anvil cylinder As. The bending operation of the front end feeder belt D37 is realized by interposing an actuator such as an air cylinder or an electric cylinder between the frame of the rear end side feeder belt D38 (not shown) and the frame of the front end side conveyor belt D37. be able to. Further, in the feeder conveyor unit D30 of this form, the front end pulley D
By adjusting the distance between 31 and the relay pulley D33, it is possible to freely set the advancing amount or the retreating amount of the feeder conveyor unit D30.

(Die Cutter Unit of Third Embodiment) The die cutter unit D of the present embodiment has a lower relay which is located below the relay cylinders D1 and D2 which form a pair of upper and lower relay cylinders. The present invention is characterized in that a feeder belt D4 that tilts up and down around the cylinder D2 is provided, and that the feeder belt D4 is driven by the lower relay cylinder D2 (FIGS. 10 and 11).

The pair of upper and lower relay cylinders D1 and D in the die cutter unit D is the front slotter unit A.
It is a small diameter cylinder arranged between the pair of upper and lower cylinders AD3 and AD4 on the downstream side of D and the anvil cylinder As and the die cylinder Ds on the die cut unit D side and relaying the sheet-shaped work W1. And each feeder belt D
4 is stretched between a lower cylinder D2 and a pulley D3 installed adjacent to the lower cylinder D2, and driven by the lower cylinder D2 as a drive source. Each pulley D3 swings so as to draw an arc around the lower cylinder D2 by driving a frame (not shown) connecting the lower cylinder D2 and the pulley D3 with an air cylinder or the like. . Therefore, the feeder belt D
4 is tilted around the lower cylinder D2 and can take a horizontal posture and an upright posture. At this time, the pulleys D3 of the plurality of feeder belts D4 are attached to a common shaft, and the raising and lowering operations of the plurality of feeder belts D4 are simultaneously executed. The center distance between the lower cylinder D2 and the pulley D3 is set equal to the center distance between the lower cylinder D2 and the anvil cylinder As.

As a result, when the feeder belt D4 is in the horizontal posture, the pulley D3 is positioned at the position directly below the anvil cylinder As, and the sheet work W1 can be driven in place of the die cylinder Ds. At this time, since the feeder belt D4 is driven by the lower relay cylinder D2, the peripheral speed of the feeder belt D4 is equal to that of the lower relay cylinder D2, and the sheet-shaped work W1 caused by the speed difference therebetween is generated. There will be no misalignment, jams, ruptures, or other transport accidents. Then, the worker K checks the die cylinder Ds that has descended during this time, and the die D for cutting.
It is possible to perform work such as exchanging c. The die cutter unit D of this embodiment does not require the pair of upper feeder conveyor units D50, and the feeder belt D
Since it is not necessary to pull the power for driving 4 through the power transmission system, the overall configuration can be made extremely simple. Also, regardless of the posture of the feeder belt D4, it is safe to say that there is no increase in the machine width due to its installation, and the die cutter unit D does not deteriorate in performance.
It can also contribute to downsizing.

[0057]

According to the die-cutting unit for a sheet-like work of the present invention, when a sheet-like work that does not need cutting comes next to a sheet-like work that requires cutting such as punching, the die is arranged below. Lower the cylinder,
When the front end of the lower feeder belt of the lower feeder conveyor unit is brought close to the position near the umbilical cylinder on the side opposite to the lowering side, even if a sheet-like work that does not need cutting such as punching comes next, it will be conveyed. Can be transported without stopping the cutting work, and the cutting die can be replaced before the next sheet-like work that requires cutting such as punching, and the cutting die can be replaced efficiently and easily. It will be possible.

On the other hand, according to the folding unit for a sheet-like work of the present invention, the chips generated by punching or the like by the die cylinder of the die cutter unit are bitten by the upper receiving belt and the lower receiving belt and discharged at the end thereof. Therefore, it is possible to effectively prevent the situation where the chips are carried on the upper folding belt and the lower folding belt and conveyed. Further, when at least the lower receiving belt is opened by the opening / closing means, a space for a worker to enter is secured between the folding unit and the die cutter unit, so that the upper folding belt and the lower folding belt interfere with the replacement work. The cutting die can be replaced efficiently and easily.

[Brief description of drawings]

FIG. 1 is a side view showing a first embodiment of a die cutter unit of the present invention in a state of being incorporated in a box making machine.

FIG. 2 is a perspective view of a main part of the die cutter unit according to the first embodiment.

FIG. 3 is an operation explanatory diagram of the die cutter unit according to the first embodiment.

FIG. 4 is a perspective view showing a folding unit according to the first embodiment.

FIG. 5 is a side view showing a die cutter unit and a folding unit according to the first embodiment.

FIG. 6 is a side view showing a die cutter unit and a folding unit according to the first embodiment.

FIG. 7 is a plan view showing a main part of the folding unit according to the first embodiment.

FIG. 8 is a side view illustrating the operation of the folding unit according to the first embodiment.

FIG. 9 is a side view showing a second embodiment of the die cutter unit of the present invention.

FIG. 10 is a side view showing a third embodiment of the die cutter unit of the present invention.

FIG. 11 is an operation explanatory diagram of the die cutter unit according to the third embodiment.

[Explanation of symbols]

Q Paper feed unit P Printing unit P1 ... P4 Printing unit D Die cutter unit FU Folding unit Ds Die cylinder Dc Cutting die As Anvil cylinder D10, D30 (Lower) Feeder conveyor unit D50 (Upper) Feeder conveyor unit D12 Tension pulley D4 Feeder belt D17 Lower feeder belt D18 Feeder belt D57 Upper feeder belt V1a Upper folding belt V1b Lower folding belt V2a Upper receiving belt V2b Lower receiving belt D11 Front end pulley D15 Rear end pulley D19 Relay pulley D33 Relay pulley 61 Downstream side Pulley (topmost pulley on the most upstream side) 5 Pit 67 Opening / closing means (cylinder) 67a Cylinder rod M Driving means W1 Sheet-like work (cardboard sheet) G) K worker

Front page continued (58) Fields surveyed (Int.Cl. ⁷ , DB name) B31B 1/04 301 B26D 1/40 504 B31B 1/88 301

Claims (4)

(57) [Claims] 1. A die cylinder and an anvil cylinder, which face each other in the vertical direction with a sheet-like work conveying path interposed therebetween, and an upper feeder conveyor unit having a circulating drive type upper feeder belt for feeding the sheet-like work between the cylinders. The upper feeder conveyor unit and the lower feeder conveyor unit having a lower feeder belt of a circulating drive type that opposes each other in the vertical direction with the conveyance path for the sheet-like work interposed therebetween are provided, and a predetermined position of the sheet-like work is provided on the outer periphery of the die cylinder. In a die-cutting unit for sheet-like works to which a cutting die for cutting is attached / detached, a die cylinder is arranged below the anvil cylinder, and an elevating structure for raising and lowering the die cylinder and a lower feeder conveyor unit to a position near the anvil cylinder. Approach the front end of the feeder belt And a structure for the lower Fi
The feeder conveyor unit is a front end puller that forms its front end.
And the trailing end pulleys that form the trailing end of these pulleys
One feeder belt that can be hung between them and this feeder
With a tension pulley that maintains the belt tension within a certain range
Equipped with the front end pulley without changing the position of the rear end pulley.
Only the rivals close to the anvil cylinder.
A sheet-type work die cutter unit featuring . 2. An upper feeder conveyor unit having a die cylinder and an anvil cylinder which face each other in the vertical direction with a sheet-like work conveying path interposed therebetween, and an upper feeder belt of a circulating drive type which feeds the sheet-like work between the cylinders. The upper feeder conveyor unit and the lower feeder conveyor unit having a lower feeder belt of a circulating drive type that opposes each other in the vertical direction with the conveyance path for the sheet-like work interposed therebetween are provided, and a predetermined position of the sheet-like work is provided on the outer periphery of the die cylinder. In a die-cutting unit for sheet-like works to which a cutting die for cutting is attached / detached, a die cylinder is arranged below the anvil cylinder, and an elevating structure for raising and lowering the die cylinder and a lower feeder conveyor unit to a position near the anvil cylinder. Approach the front end of the feeder belt And a structure for the lower Fi
The feeder conveyor unit is a front end puller that forms its front end.
The rear end pulley that forms the rear end, and the front end pulley
A relay pulley arranged between the rear-end pulleys and a front-end pulley
And the front end side feeder belt that is hung between the relay pulley,
Rear end side feeder that is hung between the relay pulley and the rear end pulley
Equipped with a belt, the front pulley is circled around the relay pulley.
Move the front end side feeder belt up and down in an arc motion.
A sheet-type work die cutter unit featuring . 3. A folding unit for bending the sheet-like work is arranged downstream of the die-cutting unit for the sheet-like work according to claim 1 or 2 , and the folding unit is conveyed from the die-cutting unit. The upper folding belt and the lower folding belt of the circulation drive type for bending the sheet-like work are provided, and the upper receiving belt and the lower receiving belt of the circulation driving type that are arranged in parallel with the upper folding belt and the lower folding belt, respectively. A folding unit for sheet-like works. 4. The opening / closing operation of at least the lower receiving belt of the upper receiving belt and the lower receiving belt with a downstream pulley of the upstream and downstream pulleys around which the belt is wound as a fulcrum. With the opening and closing means to
4. The folding unit for a sheet-like work according to claim 3 , wherein the downstream pulley is the same as the most upstream end pulley on which the lower folding belt is hung.