JPH11170401A - Method for conveying punched sheet and device therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a conveying operation highly efficient and thereby shorten a conveyance time by setting a position for a conveyor based on previously stored identical memory data and consequently, dispensing with an overlapping preparatory work for positional setting, when repeatedly conveying sheets of an identically punched shape which are through with a fabrication work using a punching machine. SOLUTION: In the conveyance device which conveys punched sheets held between endless belts 2, 3 arranged opposite to each other above and below, a belt moving means 10a which corresponds to each of plural rows of the endless belts 2, 3 is installed so that the position of the endless belts 2, 3 is freely adjustable in the width direction of the device. In addition, data corresponding to a position which is not lapped over a position for punchings generated as a result of a sheet punching operation. When the sheets of an identically punched shape are again conveyed, the endless belts 2, 3 can be automatically set at specified positions based on the stored data.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a punched sheet to be conveyed by setting a conveying belt to a position which does not interfere with the position of the punched waste when feeding a processed punched sheet to a sheet stacker or the like provided at a predetermined position. The present invention relates to a transfer method and an apparatus.

[0002]

2. Description of the Related Art In many cases, sheets such as corrugated cardboard sheets are formed as sheets of a predetermined size and then formed into various types of sheets, such as punching, cutting, ruled lines, printing, etc., for forming a box or the like. Processing is performed by a processing device to form a sheet product. These sheet products are then conveyed by a conveying device, stacked and stored in a predetermined number of sheets on a sheet stacker, and further, the stacked predetermined number of sheet products are discharged and conveyed to the outside. Processing method.

[0003]

When a sheet product processed as described above is conveyed, particularly in the case of a punched sheet processed by punching or cutting, the sheet product is cut off from the sheet product by such processing. The punching waste to be removed may remain on the sheet product without being sufficiently removed, or may be transported to the sheet stacker by being sandwiched between the belts because the position of the transport belt overlaps the punching processing position. is there.

[0004] If such punched chips are sent while being attached to or accompanying the sheet product, the sheet product may be deformed when subsequently stacked in a sheet stacker or the like, resulting in a defective product or hindrance in the next process. For this reason, a type in which the punching waste is removed in the middle of the transport path by vibrating the transport belt upward and downward in the middle thereof is used.

[0005] Such a conveyor belt is provided with a plurality of narrow belts arranged in a pair at a predetermined interval so as to sandwich a sheet product in order to make it easier to drop punched debris. Each belt is visually judged by an operator and manually moved to a position where no punching waste is sandwiched for each sheet product based on a punching shape and a processing position which differ for each product.

However, the types of sheet products obtained by processing with different punching shapes and processing positions are, for example, 100 to 150 in the case of a cardboard box, and each time the type of sheet products to be produced changes. The operation of moving the belt to the optimal position avoiding the processing position is extremely troublesome, and it takes a lot of time and labor to efficiently convey each sheet product, and a rational conveyance process cannot be performed.

It is also very complicated to automatically control the position of the belt by performing arithmetic processing each time based on different punching shapes and processing positions.

The present invention solves the various problems described above by streamlining the setting of the position of the endless belt so that sheet products having the same punched shape can be made in accordance with the same stored data. The present invention provides a method and an apparatus for conveying a punched sheet, which can reduce the labor required for repeated production and conveyance of the same sheet product in accordance with the requirements and improve the work efficiency and shorten the conveyance time. As an issue.

[0009]

According to the present invention, as a means for solving the above-mentioned problems, a punched sheet fed from a punching machine is placed between a plurality of endless belts provided at upper and lower positions movably in accordance with the punching shape. In the method of transporting a punched sheet that is nipped and transported while removing punched debris, data of a predetermined position of each endless belt that avoids the position of the punched debris of the punched sheet at least on the lower side is previously determined for each type of punched shape. After the endless belt is automatically moved to a predetermined position based on the data corresponding to the punching shape of the punched sheet to be transported among the plurality of stored data, the punched sheet transporting the punched sheet is transported. It was a method.

As another means for solving the above-mentioned problems, the following sheet conveying apparatus for carrying out the above method can be employed. In other words, in a punched sheet conveying device that conveys a punched sheet sent from a punching machine while removing punched debris by sandwiching the punched sheet between a plurality of endless belts provided up and down movably according to the punching shape,
Belt moving means for freely moving the endless belt in the width direction of the apparatus, and position setting means for outputting a signal for setting a predetermined position of each of the endless belts so as to avoid the position of the punched chips of the punched sheet at least on the lower side. A control unit that controls a driving unit of the belt moving unit; a storage unit that stores data indicating the predetermined position of the endless belt for each punching shape based on the output signal from the position setting unit; Position detecting means for detecting the position of the endless belt to be set, and based on an external signal corresponding to the punching shape of the punched sheet to be conveyed, the data of the corresponding predetermined position stored in the storage unit is stored in the storage unit. The endless belt is moved to a predetermined position by reading the signal to the control unit and supplying a control signal corresponding to the read signal to the drive unit of the belt moving unit. It may transport apparatus punched sheet having a function as a constant.

According to the sheet conveying method carried out in the above-mentioned sheet conveying apparatus, the endless belt is usually used for removing punched chips remaining on the punched sheet sandwiched between the upper and lower endless belts and sent to the next step. Vibration is provided by vibrating means or the like provided in the middle of the device to remove the debris.

Even if the punching waste is removed in this way, if the endless belt overlaps the position of the punching waste on the punched sheet, the belt is vibrated by being fed while the punching waste is sandwiched by the endless belt. But it cannot be easily dismissed. For this reason, before starting the conveyance of the punched sheet, the position of the endless belt is selected so as not to overlap with the position of the cutting waste of the punched sheet, and the endless belt is moved to that position to convey the punched sheet.

At this time, data indicating the position of the endless belt, which avoids the position of the cutting waste of the punched sheet so as not to overlap, is stored in advance in the storage unit for each punching shape. Such determination of the position of the endless belt may be performed by obtaining the position of the endless belt which avoids the position of the punched waste by the visual judgment of the operator as in the related art, or Since the punching shape, size, the position of the waste, etc., and the transport position of the punched sheet are known in advance, it is performed by automatically obtaining the position of the endless belt as described above by an arithmetic processing based on these data. Is also good.

Then, based on the stored data corresponding to the punching shape to be produced and transported again, out of the plurality of data for each punching shape indicating the position of the endless belt stored in the storage unit, the data is automatically stored. Move the endless belt to
Set its position.

It is preferable that the upper and lower endless belts move as a pair of upper and lower parts to a position avoiding the position of the punching waste of the punched sheet. You may. In this case, for example, if the upper endless belt is positioned at predetermined equal intervals on the left and right from the reference position provided at the center in the device width direction, even if there is one that Since the endless belt avoids the position of the punching waste, the punching waste can be shaken off.

In this way, when a punched sheet having the same punched shape is transported again, the troublesome work of manually adjusting the position of the endless belt each time by visual observation of the operator is omitted, and based on the stored data. The endless belt can be immediately moved to the set position, the labor of the transport operation is reduced, and the transport is performed without taking much time in preparation for the transport operation.

[0017]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an overall side view of a punched sheet conveying device according to an embodiment, and FIG. 2 is a plan view thereof. In this example, a die cutter (punching machine) B for punching a corrugated cardboard sheet into a predetermined shape is provided in front of the punching sheet conveying device A in this example, and a punched corrugated cardboard as a product after the punching processing is provided. Sheets S are fed one by one.

As shown in FIG. 1, a punched sheet conveying apparatus A has an endless belt 2 of an upper conveyor and an endless belt 3 of a lower conveyor disposed inside and under a machine frame 1 so as to face each other. A plurality of pairs of endless belts that feed the sheet S across the sheet S as a conveying path of the cardboard sheet S,
As shown in FIG. 2, each pair of endless belts is provided in a position-variable manner so that the interval in the apparatus width direction between the pair of endless belts is an arbitrary distance. The endless belts 2 and 3 of each pair are conveyed while shaking off the punching debris remaining during the conveyance of the corrugated cardboard sheet S, as described later, so that the width is narrow so as to be advantageous for removing the debris. A belt is used.

Each of the endless belts 2 of the upper conveyor is wrapped around rollers 4a, 4b, 4c, and each of the endless belts 3 of the lower conveyor is fed with rollers 5a, 5a, 5c.
b, 5c. Pulley provided 4a, the 5a arbitrary position shaft end from machine frame 1 projects outward shape concentric provided on the shaft pulley and on the output shaft of the motor m ₁ pulley 6a and the other of these rollers The pair of endless belts 2 and 3 are rotated in the opposite direction by being synchronized with each other by the endless belt 7 laid between the belts 6b, so that the cardboard sheet S is conveyed between the belts.

The endless belts 2 and 3 are vibrated in the vertical direction by vibrating means 8 and 9 provided in the middle of the conveyance.
Corrugated cardboard sheet S being sandwiched from above and below and in transition
Will be applied to the vibration. The vibrating means 8 includes a motor m provided outside the machine frame 1 on a shaft having a square cross section as shown in the figure.
Conducts rotation ₂ by an endless belt 8a, the vibrating means 9 to vibrate by conducting the rotation of the motor m ₃ by an endless belt 9a axially provided with a projection on the outer periphery of the circular cross-section to the endless belt 2, 3 be able to. By shifting the timing of the vibrations by the two vibration means 8 and 9 to each other, vibration is given to the conveyance path, so that more punching chips remaining on the corrugated cardboard sheet S can be shaken off.

As shown in FIG. 2, guide frames 11a, 11 for moving the endless belts 2, 3 in the width direction of the apparatus are provided near the receiving side end of the cardboard sheet S of the transport apparatus A.
b, the belt moving means 10 (10a, 10a,
0b) is provided as a logarithm corresponding to each pair of the plurality of pairs of endless belts 2 and 3. 10a corresponds to the endless belt 2 of the upper conveyor, and 10b is provided above and below the endless belt 3 of the lower conveyor. The belt moving means may have a structure such that one belt moving means is provided for each pair of upper and lower endless belts.

The belt moving means 10a and 10b are shown in FIG.
As shown in FIG. 4, the same upper and lower parts are provided symmetrically, so that 10a will be described below. The belt moving means 10a has the following configuration. A rack 15 in which a drive unit 13 including a motor M and a gear G is mounted on a base plate 12 having a T-shaped cross section, and a pinion 14 on an output shaft thereof is horizontally mounted on a side portion of a guide frame 11a.
Is engaged. A linear guide 16 is provided at an end of the base plate 12, thereby guiding the belt moving means 10a which moves horizontally.

In order to detect the positions of the endless belts 2, 3, a pulse transmitter 17 (PG in FIG.
, And rotation is transmitted from the gear G of the drive unit 13 via a small belt. The pulse signal is sent to a control unit to be described later, and the belt moving means 10
The movement amount of a is detected. Rollers 18, 18 for moving the endless belts 2, 3 in the width direction on the lower surface of the base plate 12 and guiding the movement of the endless belts 2, 3 at a set position.
Are provided (see FIG. 4).

Reference numeral 19 denotes a limit position sensor for detecting the limit of the movement of the belt moving means 10a and 10b in the width direction.
19a is a proximity switch mounted near both ends of the guide frames 11a and 11b, and 19b is a magnetic plate mounted on the base plate 12. FIG. 5 is a partial perspective view showing the relationship between the belt moving means 10 and the belt 2.

Next, FIG. 6 shows an overall schematic block diagram of a control circuit for driving the transfer device. The motor m ₁ is for driving the endless belts 2 and 3, and the motors m ₂ and m ₃ are
As described above, the drive unit 9 is driven by a control signal from the control unit 21 of the control unit 20.

The belt moving means 10 is provided with a plurality of pairs of upper and lower 10a, 10b, and the driving motor M thereof is also driven and controlled by the controller 21. Although only the upper belt moving means 10a is shown in FIG. 6 for simplicity of illustration, the same applies to the control unit 21 for 10b.
Is driven and controlled. Belt moving means 10 (10a,
10b) is moved by the motor M, the amount of movement from the reference position is determined by the signal from the pulse transmitter 17
And thus the position of the endless belts 2, 3 is detected.

As shown in FIG. 6, a position setting means 23 is provided at an appropriate position on the machine side of the transfer apparatus A. The position setting means 23 comprises input switch means having a panel-type display function, and each of the belt moving means 10a, 10b
And a second input switch for storing the positions of the endless belts 2 and 3 manually. The first input switch is connected to the control unit 21
The input signal is transmitted to each belt moving means 10a, 1
0b to the motor M of the driving unit 13 to move the endless belts 2 and 3 little by little by inching operation in the width direction of the apparatus.
0a and 10b are provided one by one. The set position of each of the endless belts 2 and 3 after being moved by the first input switch is displayed on the panel display for each endless belt as a distance from a reference position provided at the center in the apparatus width direction.

The reference position for setting the positions of the endless belts 2 and 3 may be provided at the end in the width direction of the apparatus, or may be provided at another position.

The second input switch allows the endless belts 2 and 3 to be moved by the belt moving means 1 by the inching operation.
0a and 10b move while being detected based on the signals of the pulse transmitters 17 provided respectively, and are appropriately set from the reference position to predetermined positions avoiding the position of the punching waste. This is a command signal output to the control unit 21 to be stored in the storage unit 22 of the control unit 20.

Since the position setting means 23 knows in advance the punching shape, size, scrap position, etc. of the corrugated cardboard sheet S and the transport position of the punched sheet, the endless belt 2, It may have a function of obtaining the third setting position. Even in such a case, similarly, the data corresponding to the obtained set position is stored in the storage unit 22.

The positions of the endless belts 2 and 3 are set in the same manner as described above for each type of punching shape of the corrugated cardboard sheet.
It is memorized.

In the above example, the belt moving means 10a and 10b can move independently in the width direction of the apparatus. However, when the pair of upper and lower endless belts are moved integrally in the width direction of the apparatus, the first means is used. Input switch is up / down 1
What is necessary is just to provide corresponding to each of a pair of endless belts.

As the control means 20, when the various input signals are inputted, a computer based on a sequencer which performs an operation based on the signals and outputs a control signal is used. A signal corresponding to the product number of the corrugated cardboard sheet S punched by the former die cutter is transmitted from the host computer 24 or an external input device for controlling the former die cutter to the controller 20 as well. With this signal, the position data corresponding to the product number is read out of the position data stored in the storage unit 22, and a drive signal is given from the control unit 21 to each motor M of the drive unit 13 based on this. Thereby, the positions of the endless belts 2 and 3 are set. The product number is a number given to each product in which data such as the punching shape, size (dimensions), punching waste positions and shapes, and printing contents of the punching process of the corrugated cardboard sheet to be processed are different for each product. It also becomes the number corresponding to the type.

The conveying device of the embodiment configured as described above conveys the cardboard sheet S as follows. The transport device A is for feeding a sheet to a sheet stacker while maintaining a predetermined transport position while removing punching debris and the like generated by performing processing such as punching at a predetermined position of a former die cutter B. The punching chips are removed mainly by vibrating the corrugated cardboard sheet S by the vibrating means 8 and 9, and at this time, the endless belts 2 and 3 that convey the corrugated cardboard sheet S select positions where the punching chips are not sandwiched. Must be set in

For this reason, the endless belts 2, 3 are moved and adjusted in advance in the width direction of the apparatus by the upper and lower pairs of the belt moving means 10 before the conveyance of the corrugated cardboard sheet S is started, so that the punched chips are not interposed therebetween. Is set to Depending on the shape, size, arrangement, number, etc. of the punching waste, the endless belts 2 and 3 which cannot be set at positions other than the position of the punching waste may be generated. In this case, the position of the punching waste should be avoided as much as possible. In this way, the endless belts 2 and 3 are set at positions where the punching waste can be easily removed. This position setting is performed as follows.

The positions of the endless belts 2 and 3 are moved by the belt moving means 10 from the reference position provided at the center in the width direction of the apparatus as shown in FIG. Is set. In this case, each of the endless belts 2 and 3, which were initially located at a fixed distance from the reference position before the position was set, is visually moved to the left or right by the belt moving means 10.

At this time, as shown in FIG. 7, the endless belts 2, 3 are moved to the left or right while visually confirming that the position of each of the endless belts 2, 3 does not overlap the position of the punched waste. A signal to be moved is transmitted from the first input switch of the position setting means 23 via the control unit 21 to the belt moving means 10.
Inching operation is performed by sending the motors a and b to the motor M for a short time at a time. In this way, when the position shown in FIG. 7 is found for each of the endless belts 2 and 3, a command signal is given from the second input switch to the control unit 21 and stored in the storage unit 22 in order to store the position data. I do.

When the positions of the endless belts 2 and 3 are obtained by arithmetic processing by the position setting means 23, the position data is stored in the storage unit 22 in the same manner.

The above operation is performed for each corrugated cardboard sheet of a new product number to be punched and conveyed, and all the position data are stored and stored in the storage unit 22.
Thereafter, according to the order from the customer, the corrugated cardboard sheet of any one of the product numbers is punched and transported again.

When a corrugated cardboard sheet having the same product number is manufactured and conveyed again, it is not necessary to search for the set position of the endless belt by the inching operation as in the first time in the second and subsequent manufacturing, and the stored position is used. The data corresponding to the product number is read out from the data, and the endless belts 2 and 3 are moved to predetermined positions by driving the driving units 13 of the belt moving means 10a and 10b based on the position data. Is set.

Since the punched chips are dropped downward, only the lower endless belt 3 may be set at a position avoiding the position of the punched chips. In this case, for example, the upper endless belt 2 may be moved left and right at equal intervals in each of the four rows around the reference position.

In the case where the upper and lower belt moving means 10 are provided one for the pair of upper and lower endless belts, the pair of upper and lower endless belts naturally move simultaneously and integrally. .

[0043]

As described in detail above, at least the position of the endless belt disposed on the lower side is set to a position avoiding the position of the cutting waste of the punched sheet, and the data corresponding to the position is stored in the storage unit in advance. When the punched sheet is transported, the position data corresponding to the type of the punched shape of the punched sheet is read out from a plurality of data stored in the storage unit, and based on the read data, an endless Since the punched sheet is transported after moving the belt to a predetermined position, when feeding a sheet having the same punching shape as the punched sheet stored in the storage unit, the endless belt can be immediately moved to the predetermined position. As a result, a remarkable effect can be obtained that the labor of the transport operation can be reduced and the transport time can be shortened by improving the operation efficiency.

[Brief description of the drawings]

FIG. 1 is an overall schematic side view of a transfer device according to an embodiment.

FIG. 2 is a plan view of the above.

FIG. 3 is a partially enlarged side view in the vicinity of a belt moving unit.

FIG. 4 is a front view taken along the line IV-IV in FIG. 1;

FIG. 5 is a partially enlarged perspective view of the vicinity of a belt moving unit.

FIG. 6 is an overall schematic block diagram of a control circuit.

FIG. 7 is a diagram showing a relationship between a processed portion of a corrugated cardboard sheet and an endless belt.

FIG. 8 is a relationship diagram of another example of the above.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Machine frame 2, 3 Endless belt 4a, 4b, 4c Roller 5a, 5b, 5c Roller 6a, 6b Pulley 7 Endless belt 8, 9 Vibration means 10, 10a, 10b Belt movement means 11a, 11b Guide frame 12 Base plate 13 driver 14 pinion 15 rack 16 linear guide 17 pulse generator 18 rollers 20 control unit 21 control unit 22 storage unit 23 position setting means 24 the host computer m ₁ ~m ₃ motor M motor S cardboard sheet

Claims (2)

[Claims] 1. A method of conveying a punched sheet, wherein a punched sheet sent from a punching machine is conveyed while removing punched chips by sandwiching the punched sheet between a plurality of endless belts provided up and down so as to be movable in accordance with the punching shape. In the above, the data of the predetermined position of each endless belt which avoids the position of the cutting waste of the punched sheet at least on the lower side is stored in advance for each type of the punching shape, and the punching to be conveyed among the stored data is performed. A method for transporting a punched sheet, comprising: automatically moving an endless belt to a predetermined position based on data corresponding to a punched shape of the sheet, and then transporting the punched sheet. 2. A punched sheet conveying apparatus for conveying a punched sheet sent from a punching machine between a plurality of endless belts provided up and down so as to be movable in accordance with the punching shape and removing punched chips. A belt moving means for freely moving the endless belt in the width direction of the apparatus, and a position for outputting a signal for setting a predetermined position of each of the endless belts so as to avoid the position of punched chips of the punched sheet at least on the lower side. A setting unit, a control unit that controls a driving unit of the belt moving unit, a storage unit that stores data indicating the predetermined position of the endless belt for each punching shape based on the output signal from the position setting unit, Position detecting means for detecting a position of the endless belt set to a position, and an external signal corresponding to a punching shape of a punched sheet to be conveyed. The endless belt is read out at a predetermined position by reading data at a corresponding predetermined position stored in the storage unit to the control unit and providing a control signal corresponding to the data to the drive unit of the belt moving unit. A punched sheet conveying device having a function of setting to a position.