JPS60217912A - Regulator for peripheral speed of rotary machining tool for packaging machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention [Industrial Field of Application] The present invention relates to a circumferential speed adjustment device for a rotary processing tool for a packaging machine, and particularly to a circumferential speed adjustment device for a rotary processing tool for a packaging machine that manually corrects the circumferential speed of the rotary processing tool. This invention relates to a speed adjustment device.

[Prior Art] A packaging sheet, such as a band-shaped wrapping paper or film (hereinafter simply referred to as wrapping paper), is continuously formed into a cylindrical shape.
In a so-called billow-type packaging machine that wraps an object, seals the front and back of the object, and then cuts the object, a rotary processing tool that rotates in conjunction with the moving speed of the wrapping paper that wraps the object is used to wrap the object. It is common to perform various processing on paper, such as sealing and cutting wrapping paper, at -I stage. In addition to the function of a cutting machine that cuts the wrapping paper smoothly, a packaging machine equipped with such a rotary processing tool has the following functions:
Even for a rotating sealing machine, it is necessary to set its circumferential speed to be the same as the moving speed of the wrapping paper that wraps around the item to be packaged.

There has been a proposal to automate the adjustment of the circumferential speed of a rotary processing tool with respect to the above-mentioned moving speed, which has conventionally been done exclusively manually, as seen in Japanese Patent Laid-Open No. 57-46726, for example. For example, this is done by calculating the eccentricity of an eccentric crank whose circumferential speed is varied based on the cutting pitch, etc., and adjusting the eccentricity of the crank using a motor.

However, it is difficult to perfectly set the circumferential speed of the rotary processing tool so that the processing parts of the wrapping paper to be processed, such as cut parts and sealing surfaces, are formed well. This is difficult due to factors such as errors, different shapes of the items to be packaged, and differences in the properties of the wrapping paper, and in reality, the following correction of the circumferential speed of the rotary processing tool has been performed. That is, the state of the means for varying the circumferential speed of the rotary processing tool, for example, the eccentricity of the eccentric crank, is calculated based on the packaging shape of the packaged item (cutting pitch, height of the packaged item, etc.). When adjusting the circumferential speed of the rotary processing tool, which is controlled to a predetermined setting amount, the operator checks the cut shape of the package actually formed, the condition of the sealing surface, etc. Each operation involves pressing a switch serving as a manual correction means and correcting the amount of eccentricity of the eccentric crank by a desired set amount.

The above-mentioned corrections are necessary to obtain the optimal cut shape and seal surface condition depending on the type and shape of the packaged items, the type of wrapping paper, etc., but each time the packaged items are replaced, Having to perform correction operations is troublesome, and also causes a long setup time in the process, which may make it impossible to maintain a good shape of the cut of the packaged product or the appearance of the sealing surface. Not only that, but it has also become a problem in that it may become a factor that increases manufacturing costs. In addition, because the circumferential speed is manually corrected, it may not be possible to seal previously wrapped items at the same circumferential speed, which also poses problems from a quality perspective. .

[Objective of the Invention 1] The present invention was developed in view of the above points, and its object is to provide a packaging machine that facilitates adjustment of the circumferential speed of a rotary processing tool, which requires correction for each type of product to be packaged. An object of the present invention is to provide a circumferential speed adjusting device for a rotary processing tool.

[Configuration of the invention] The configuration of the present invention made to achieve the above object is as follows:
As shown in FIG. 1, a packaging shape input means M for inputting the MIQ packaging shape of the object to be packaged.
2, and a rotary processing tool M3 that rotates at a speed corresponding to the moving speed of the packaging sheet wrapping the object to be packaged M1 and processes the packaging sheet.
a circumferential speed variable means M4 for varying the circumferential speed during machining; a circumferential speed setting means M5 for giving the circumferential speed variable means M4 a set amount corresponding to a predetermined circumferential speed of the rotary processing tool M3; The circumferential speed of the rotary processing tool M3 is adjusted based on the packaging shape of the object M1 inputted by the means M2, and the circumferential speed of the rotary processing tool is controlled by controlling the circumferential speed setting means M5 according to the correction amount. A package comprising: circumferential speed control means M6 that sets the speed to a target circumferential speed; and manual correction means M7 that manually controls the circumferential speed setting means M5 to correct the circumferential speed of the rotary processing tool M3 from the target circumferential speed. A circumferential speed adjusting device for a rotary machining tool, comprising a circumferential speed setting amount detection means M8 for detecting the setting amount by the circumferential speed setting means M5, and a circumferential speed control means M6.
However, the setting interval after correction detected by the circumferential speed setting amount detection means M8 is stored, and when the packaging shapes are the same from the packaging shape input means, the circumferential speed setting means M5 is controlled to The gist of the present invention is a circumferential speed adjusting device for a rotary processing tool for a packaging machine, which is configured to apply the set amount to the circumferential speed setting means M4 to determine the circumferential speed of the rotary processing tool M3.

[Example] Embodiments of the present invention will be described in detail below based on the drawings.

FIG. 2 is a schematic configuration diagram showing the mechanical configuration of a horizontal pillow packaging machine according to an embodiment of the present invention. This horizontal billow wrapping machine includes, from the left end in the figure, a supply conveyor 1 that supplies the items to be packaged to a former (not shown), a feed roller 2 that supplies a strip of wrapping paper to the former, and a feed roller 2 that supplies a strip of wrapping paper to the former. A pull-out tension roller 3, a center sealing device 4 that seals the overlapping part of the wrapping paper formed into a cylindrical shape.
, a rotary seal cutter 5 as a rotary processing tool for sealing the packaging bag (hereinafter referred to as end seal -b) and cutting the sealed portion at the same time, and a delivery conveyor 6 are provided.

Next, the drive system of each of these important parts and the automatic adjustment device will be described in detail. The driving force of the main motor M is bell 1-7. Main drive shaft8. Cheno 9. and an intermediate shaft 10 for transmission to the supply conveyor 1, and the feed roller 2 is connected to the main drive shaft 8 through a transmission 11. Drive shaft 12. Differential gear machine @13° intermediate shaft 15 and feed m adjustment roller 1
4 so that the driving force is transmitted thereto.

Further, the tension roller 3 receives driving force from the intermediate shaft 15 via the chino 16 drive shaft 17, and the center seal device 4 receives the driving force from the drive shaft 17 via the fine adjustment roller 18, 6 is connected so that driving force is transmitted from the drive shaft 17 via drive chinos 19 and 20. The rotary seal cutter 5 also has a main drive shaft 8.
Karachi 1-in 21, differential gear mechanism 22. Clutch mechanism 23
9. Inconstant speed rotation mechanism as circumferential speed variable means 24. and Chi1
The driving force is transmitted through the connector 25.

26 is a timing adjustment device for the rotary seal cutter 5 connected to the main drive shaft 8 via the chino 21 and the intermediate shaft 27.

Next, the inconstant speed rotation mechanism 24 will be explained in detail with reference to FIG. A constant speed rotation mechanism 24 is connected to a driving chino 25 of the rotary seal cutter 5. Reference numeral 28 denotes a fixed drive shaft on which a drive crank 29 is attached, and a crank lever 32 of a variable eccentric crank 31 attached to a movable driven shaft 30 is engaged with and connected to a long hole in the drive crank 29. By moving the driven shaft 30, its eccentricity X
by changing the speed of non-uniform rotation of the driven shaft 30,
The circumferential speed of the rotary seal cutter 5 during sealing can be adjusted. The driven shaft 30 is moved by a screw moving device 33.
This is done by rotating the threaded drive shaft 33a using the control motor PM5, and the larger the eccentricity X, the slower the circumferential speed of the rotary seal cutter 5 during cutting and sealing.

The control motor PM4 is connected to the output shaft of the differential gear j+R22 via a gear A to adjust the starting position of the rotary seal cutter 5, that is, the rotation angle of 0 degrees. The control motor PM3 is connected to the output shaft of the differential gear m mechanism 36 of the timing adjustment device 26 via a gear, and the camshaft 3
4 to adjust the timing of the rotary seal cutter 5 relative to the patterned wrapping paper. The control motor PM2 rotates the feed roller 2 and the tension roller 3 that feed the wrapping paper so that the timing of feeding the patterned wrapping paper matches the operation of the rotary seal cutter 5. It is connected to the shaft via a gear, and further, a control motor PM1 is connected to a transmission 11 for variable gear ratio.

PH81 to PH88 are pulse generators arranged adjacent to each axis to generate a number of pulses proportional to the rotation of each detected axis. The pulse generator PH81 is arranged with respect to the timing cam 34a attached to the camshaft 34, and is provided to detect the timing of the rotary seal saw blade 5 with respect to the patterned wrapping paper. The pulse generator P) 182 is used to detect the rotation of the intermediate shaft 10 and stop the supply conveyor 1 in a fixed position. The pulse generator P)ls3 serves as a detector for confirming the origin of the rotation angle of the rotary seal cutter 5, and the pulse generator PH$4 detects the position where the eccentricity IX of the inconstant rotation mechanism 24 is zero, that is, the machine with an eccentric crank. The pulse generator PH85 serves as a limit switch that detects the origin, and also serves as a pattern detector that detects the pattern of the wrapping paper on the feed roller 2 and synchronizes the operation of the rotary seal cutter 5 with the cutting position of the wrapping paper. Furthermore, a pulse generator PH86 is provided for detecting the rotational speed of the delivery roller 2. Also, pulse generator P H
Reference numeral 87 is provided for measuring the cutter angle of the rotary seal cutter 5, and PH88 is provided for detecting the amount of eccentricity of the crank as circumferential speed setting amount detection means.

Next, the electrical system of this embodiment will be explained using the block diagram shown in FIG. In the figure, reference numeral 100 is a control circuit that performs various controls on the horizontal pillow wrapping paper, and corresponds to the circumferential speed control means in terms of the configuration of the present invention. The control circuit 100 includes a well-known central processing unit (CPU) that performs data input/output, calculations, etc.
The computer is equipped with a CPU (CPU) 102, and is configured to perform control and processing of (2) and (2). 104 is a read-only memory (ROM) in which processing programs and various constants are stored.
, 106 is a temporary storage memory (RA'M) in which data can be freely read and written, and 107 is a memory that is backed up by a battery (not shown) and retains the written data even after the power of the packaging machine is turned off. 108 is an external display according to data from the CPU 102! i[<CRT) CRT controller 1 that controls the 109 and displays control information, etc.
10 is a data key part 111a of an external keyboard 111
Keyboard input circuit for inputting data, 112
are the already mentioned pulse generators Pl-IS1 to PH8.
A pulse input circuit 114 inputs a pulse signal from 8, and a pulse input circuit 114 rotates the main motor M and control motors PM1 to PM5 in the normal direction.
Power output circuit that drives both reverse rotation, 116 is CPU
102. ROM104. RAM106. CRT controller 108. Keyboard input circuit 110. Pulse input circuit 112. Each represents a data bus interconnecting power output circuits 114. The keyboard 111 also includes a numeric keypad for setting data such as cut pitch, and mode setting keys (REQ,
SET, 5TART)
and a command key part 111b for inputting a manual correction command for the circumferential speed of the rotary processing tool. The former data key part 111a works together with the keyboard input circuit 110 as a packaging shape input means in the configuration of the present invention, and the latter command key part 111b is a switch for rotating the direct control motor PM5 in the forward and reverse directions, and works as a manual correction means.

Next, using the flowcharts shown in Figures 5 and 6,
The operation of the circumferential speed adjusting device for a rotary processing tool for a packaging machine will be explained. FIG. 5 is a flowchart showing an outline of the processing performed by the control circuit 100 from power-on to the start of automatic operation. When the power is turned on, the control circuit 100 starts processing from FIG. Constant settings and various flags necessary for control, such as the correction measurement flag F described later
Performs processing such as resetting (F=O) of CRTl 0
9 displays an initial message requesting input of data regarding the item to be packaged. In this state, the main motor M and control motors PM1 to PM5 of the horizontal billow wrapping machine are stopped. In the following step 210, the keyboard 11
The keyboard input circuit 110 determines whether there is an input from 1.
and the same step 21 until there is an input
Do not repeat execution of 0. If there is an input from the keyboard 111 in step 210, the process proceeds to step 22.
0, and from the key data input from the keyboard 111, it is determined whether the object to be packaged has a new packaging shape, but it has a packaging shape number that has already been wrapped. . In this embodiment, step 21
When the key data input at 0 is data of a key called rsTARTJ, it is determined that the packaging is for an item that has already been packaged and data regarding the packaging shape has been registered, and the process proceeds to step to 230,
When the key data is data of a key called rsETJ, it is determined that the packaging is a new item that has not been packaged before, and the process proceeds to step 235. If it is data, it is determined that various settings for the item to be packaged that was automatically wrapped immediately before are to be registered, and the process proceeds to step 240. Here, in order to register the various setting amounts of engagement for which the [5ETJ key is pressed, in addition to the cutting pitch and the height of the packaged object, the circumferential speed of the rotary seal cutter 5, that is, the setting in the inconstant speed rotation mechanism 24, is registered. This includes the amount of eccentricity caused and its manual correction.

The packaging shape of the packaged items that have already been packaged and data necessary for the packaging, such as the cutting pitch r and the height of the packaged items, or the circumferential speed of the rotary seal cutter 5 and the rotary seal cutter calculated from this. The correction value etc. when manually correcting the circumferential speed of No. 5 is stored in the backup RAM 107.
The contents are retained regardless of whether the power is turned on or off.

The judgment regarding the key data in step 220 is l5ET.
When it is J, the correction measurement flag F is set to 1 in the subsequent step 240. After that, the process moves to step 230 as in the case where the determination regarding the key data in step 220 is r' STARTj. Step 2
In step 30, the registration number of the packaging shape is inputted from the electronic part 111a.

A registration number is a number given to each packaging shape stored in the packaging machine, and when a certain registration number N is input, it is possible to change the number of items that have already been input, such as the cut pitch or the height of the packaged object. Data corresponding to the packaging shape is read from the backup RAM 107 and is used as a parameter for packaging according to this data. If the key data is rsETJ, the registration I
The S number N corresponds to the number for registering the data to be corrected and measured now. When the registration number N is input in step 230, in the following step 238, it is determined that packaging has already been performed and data regarding the packaging shape (corresponding to the registration number N) is held in the backup RAM 107. A process is performed in which one of several types of items to be packaged is selected and data for packaging regarding that item is read from the backup RAM 107. On the other hand, in step 235, it is assumed that a new item to be packaged is to be wrapped, and data regarding the packaging shape (cut pitch r, height 11 of the item to be packaged, or data on whether or not the wrapping paper has a pattern) is input from the keyboard 111. The process of inputting the information is performed. In step 245 following step 235,
Based on the packaging shape of the object to be packaged input in step 235, set values such as the circumferential speed of the rotary seal cutter 5 and its rotation angle, which means the timing of cutting with respect to the object to be packaged, are calculated. The details of the calculation of the circumferential speed and rotation angle performed in step 245 are known, for example, in Japanese Patent Application Laid-Open No. 57-47626. Japanese Patent Publication No. 58-1834
Although a detailed explanation will not be provided since it is based on Japanese Patent No. 32), the setting of the circumferential speed of the rotary seal cutter 5, which is involved in the present invention, will be briefly explained below.

The circumferential speed of the rotary seal cutter 5 during sealing is determined according to the eccentricity X of the eccentric crank in the non-uniform rotation mechanism 24, and the eccentricity x depends on the cut pitch r of the package inputted in step 235, and the It is calculated from the height 1 of the package using the following equation (1).

Here, k is a calculation constant, and N is a constant indicating the pitch diameter of the drive gear of the rotary seal cutter 5, both of which are set in advance in the RO'M 104 as values unique to the packaging machine.

The rotation angle of the rotary seal cutter 5 with respect to the position of the packaged object is similarly calculated based on the packaging shape.

In step 250 following step 245, so-called matching operation processing is performed. That is, based on the packaging shape input in step 235, set values of the circumferential speed of the rotary seal cutter 5 and its rotation angle to be set are determined in step 245.
After calculating in step 238 or reading out the data already stored in step 238, and then checking these set values, (1) operation to match the cut pitch, (2) circumferential speed of the rotary seal cutter 5. In order to adjust this, the control motor PM is first set to the initial position of the inconstant speed rotation mechanism 24, that is, to the position where the eccentricity m of the eccentric crank is equal to
(3) Driving (forward rotation) the motor PM'5 from the zero eccentricity position to set it at a predetermined eccentric position; (4) Reversing the rotation of the rotary seal cutter 5 to the packaged object. (5) Setting the position of the registration mark and the rotation angle of the rotary seal cutter 5 so that cutting is performed in accordance with the pattern S (registration mark) attached to the wrapping paper. The synchronized operations are performed one after another, and the circumferential speed of the rotary seal cutter 5, the rotation angle with respect to the object to be packaged, etc. are adjusted to the optimum state for packaging in the designated packaging shape.

If the packaging shape of the packaged item has already been packaged previously and the circumferential speed of the rotary seal cutter 5 and the rotation angle relative to the position of the packaged item have been set for the packaging shape, those data are stored in step 238. After reading out from the backup RAM 107, the process moves to step 250, where the above-mentioned matching operation is performed, and the circumferential speed of the rotary seal cutter 5 and the rotation angle relative to the position of the packaged object are changed to the values used when packaging in the same packaging shape last time. Processing to set the status will be performed.

In step 260 following step 250, the input from the keyboard 111 is checked, and the key indicating the start of automatic operation (for example, the key data of OO input from the data key part 111a, or the automatic operation switch (not shown)) is checked. The same step 260 is repeated until there is a key input), and when there is human power on the key, the process exits to B and moves to an automatic operation control routine (shown in the figure) in which packaging is performed with the above-mentioned settings.

In a control routine (not shown) for automatic operation, the control circuit 100 rotates the main motor M, and the pulse generator F)
While reading the pulse signals from HS1 to PHS8 through the pulse input circuit 112, the control motors PM1 to M5 are controlled as necessary, and the conditions set in the control routine shown in FIG. control and automatic packaging of items to be packaged a predetermined number of times.
Repeat the process. During the automatic operation performed in this manner, the operator may manually correct the circumferential speed of the rotary seal cutter 5 as described below. During the automatic operation of the packaging machine, the operator visually checks the shape of the sealed surface of the packaged product, and if the rotational speed of the rotary seal cutter 5 is faster than the speed of the wrapping paper, the sealing surface may twitch or the seals on the front and back of the packaged item may be damaged. If the widths are not equal, press the delay correction key 111d of the command key part 111b as a manual correction means on the keyboard 111 to increase the circumferential speed, so that the rotational speed of the rotary seal cutter 5 becomes slower. If the seal surface is dirty or the rotary seal cutter 5 gets caught on the package, press the advance correction key 111f and repeat checking the seal surface of the wrapping paper to obtain the optimal seal surface. Correct to. Since the control motor PM, 5 is not driven by the control circuit 100 during automatic operation, by pressing the above command key, in the case of the delay command key 111d, it immediately rotates forward and adjusts the eccentricity X. Move the eccentric crank so that it is larger than the calculated position, and press the advance command key 111f.
When is pressed, the rotation is reversed and the eccentric crank is moved from the position of the calculated eccentricity x in a direction that decreases the eccentricity. These adjustments are independent of the operation of the control circuit 100.
This is done manually.

The above-mentioned packaging by automatic operation ends when the number of packages set before the operation is counted by a counter (not shown), and the process of the control circuit 100 returns to the process of step 210 shown in FIG. come.

Next, using a flowchart in FIG. 6, a description will be given of the process of registering the set amount by manual correction of the above-mentioned circumferential "a" mark.

FIG. 6 shows, among the processes described as the matching operation (step 250) in the flowchart of FIG. After that, the process of setting the amount of eccentricity X is shown. When registering the set amount by manually correcting the circumferential speed, the fifth step prior to the process shown in FIG.
In the processing from step 210 to step 245 in the figure, the key data is rsETi, and the correction measurement flag F is set to 1.

During the matching operation, after the cut 1-pitch matching operation is completed, control is entered from C in FIG. 6, and in step 300, the main motor M is first rotated at a low speed. This follows step 310
The supply conveyor 1 is operated at a low speed in order to detect the output of the pulse generator PH82 and stop the supply conveyor 1 at a predetermined position. From the output of the pulse generator P)-182 input via the pulse input circuit 112, the pulse generator PH8
The process of step 310 for determining whether pulse transmitter PH82 is turned on is repeated until pulse generator PH82 is turned on.
When the pulse generator PH82 is turned on, the process proceeds to the next step 320, and after stopping the main motor M, the process proceeds to step 330. In step 330, it is determined whether the output of the pulse generator PH84 is on. As already mentioned, the pulse generator PH84 is connected to the control motor PM5.
When the moving device 33 driven by the rotation of
It is configured to be on. Since there is an eccentric amount after automatic packaging has been performed, the determination at step 330 is rNOJ immediately after entering the main control routine, and the process moves to step 340. In step 340, in order to measure and set the eccentricity X below,
In order to make the eccentricity mx zero, a process is performed to output a control signal via the power output circuit 114 and operate the control motor PM5 in the reverse direction. In the following step 350, it is determined whether or not to perform a correction measurement, that is, is the flag F=1? A judgment will be made. As already mentioned, the flag F is the key data input in step 220 of FIG.
It is set to 1 only when J, which means that the eccentricity corresponding to the circumferential speed of the rotary seal cutter 5 is registered at this time. If F=1 is established in step 350, the correction n1 measurement is performed, and the C1 process proceeds to step 360, and step 340
A process is performed in which the total number of rotations of the drive shaft 33a rotated by the control motor PM5, which has started driving at , is detected by counting the number of pulses from the pulse generator PH88. Actually, the drive shaft 33 is driven by the control motor PM5.
Since the series of processing performed in the control circuit 100 is sufficiently fast compared to the rotational speed of When is changing from a low level to a high level, processing is performed to increment the value of the counter (initial value - 0) in the cPU 102 by one. After the processing in step 360, or when F=O in the judgment in step 350, the processing proceeds to step 370, and determines whether the processing time after entering this control routine exceeds the predetermined processing time. A determination is made whether or not. For example, if the control motor PM5 is malfunctioning and does not operate normally, the predetermined processing time will be exceeded while repeating steps 330 to 370, and the processing will proceed to step 380.
It was determined that there was an abnormality in the control system, and the power to all motors, etc. was turned off and the packaging machine was stopped. If it is within the predetermined time, the determination at step 370 is "NO" and the process returns to step 330, where the determination is made as to whether rPH84 is on or not. Step 3
The process up to 70 will be repeated. Control motor PM5
The moving device 33 eventually moves to the origin by the rotation (reverse rotation) of the drive shaft 33a, and the output of the pulse generator PH84 turns on.
emits one pulse and continues [pulling], so during correction measurement (
F-1), when the pulse generator PH34 is turned on, the counter in the CPU 102 indicates that the drive shaft 33a is
A value equal to the number of rotations will be left behind.

When the determination at step 330 is rYEsJ, the process moves to step 390, where a process for stopping the control motor PM5 is performed. In the following step 400, it is again determined whether or not it is a correction measurement (F-1?), and when the flag is "-1", the process proceeds to step 410, and the process is repeated by repeating the processes from step 330 to step 370. l in the CPU 102 as the rotation speed of the shaft 33a
A process is performed in which the number of pulses input from the pulse generator PH38 sent to the J-counter, that is, the eccentricity mX of the eccentric crank, is stored in a predetermined area of the backup RAM 107 as one of the data of the packaging shape of the registration number @N. It is done.

Through the processing of steps 330 to 71110 described above, when the flag F=O, processing is performed such as simply returning the eccentric crank to the origin reset 1 (the amount of eccentricity is zero), and when the flag F=1 (the key data is rsETJ ), in addition to resetting the origin of the eccentric crank, the setting position of the non-uniform rotation mechanism 24 including the manual correction valve of the circumferential speed performed in the automatic operation that has already been performed, i.e.,
This means that the process of storing the amount of eccentricity x that realizes the peripheral speed of the rotary seal cutter 5 that is optimal for the packaging shape of the object to be packaged in a predetermined area of the backup RAM 107 has been performed.

After the processing of step 4.10, or step 4,
When the determination at OO is rNOJ (F=O), the process proceeds to step 420, where the eccentricity amount X is set.

If the processing up to step 410 is performed normally,
Since the eccentric crank has been reset to its origin and the amount of eccentricity is zero, the control motor PM5 is rotated in the normal direction from this position, and while counting the pulses from the pulse generator PH88, the moving device 33 moves to the position where the predetermined amount of eccentricity X is obtained. If you send , it means that the eccentricity x has been set. Sten”r
In the process of step 420, the amount of eccentricity
(When the input key data is rREQJ), it is the value determined by formula (1), and packaging has already been performed, so manual correction to the optimal circumferential speed of the rotary seal cutter 5 for the packaging shape is required. At that time, when the above-mentioned control is being performed and the eccentricity mX is stored in the backup RAM 107 (the key data input in step 220 in FIG. 5 is rSETJ, and the eccentricity ff1-X is registered) backup RAM1)
This is the value of the eccentricity X stored in 07. The key data input in step 220 of FIG. 5 is rSTARTJ.
, flag F is zero in the above-mentioned FIG. 6, and no correction measurement is performed, but the key data is r
sTART", the eccentricity MX for setting the circumferential speed of the rotary seal cutter 5 is also read out in step 230 of FIG. 5 as one of the data corresponding to the already registered packaging shape. , the eccentricity (6
), the inconstant speed rotation mechanism 24 is set. After the amount of eccentricity is set in step 420, the process goes to D to end this control routine and perform the next alignment operation, for example, setting the rotation angle of the rotary seal cutter 5.

In this embodiment configured as described above, (a) when the initially input key data is rREQJ and packaging of a new shape is to be performed, the entered packaging is The amount of eccentricity of the non-uniform rotation mechanism 24 corresponding to the circumferential speed of the rotary seal cutter 5 is determined from the shape, and the amount of eccentricity is set. (b) If the key data is t'5ETJ, (c) When the key data is rsTARTJ, it is assumed that the packaging is based on the already registered packaging shape, and the entered registration number is entered. Along with the corresponding cut pitch and height of the packaged object, the amount of eccentricity when manual correction was previously performed and the optimum circumferential speed was obtained is read from the backup RA, M107, and the amount of eccentricity is set. It is configured to do the following.

Therefore, when packaging has already been performed automatically and the circumferential speed of the rotary seal cutter 5 has been manually corrected,
Since the amount of eccentricity at that time can be memorized, when packaging with the same packaging shape again, the amount of eccentricity that gives the optimum circumferential speed of the rotary seal cutter 5 can be recalled by the registration number, and the amount of eccentricity can be set. can be done.

As a result, it is possible to easily set the same amount of eccentricity for items to be packaged that have the same packaging shape, significantly reducing setup man-hours, and forming the cutting shape of the wrapping paper and the sealing surface. Since the packaging is carried out under the same conditions, there will be no packaging errors or sealing defects. Furthermore, variations in quality when packaging items in the same packaging state are also reduced.

In addition, in this embodiment, data regarding multiple packaging shapes is stored based on the registration number, so if multiple packaging shapes and their corresponding eccentricities are stored, troublesome manual corrections can be eliminated. You can perform automatic operation one after another.

In this embodiment, sealing and cutting are performed simultaneously by the rotary seal cutter 5, but the present invention can also be applied to a packaging machine having a rotary processing tool and a cutting machine separately.
can be done. Furthermore, the present invention can also be applied to a peripheral speed adjusting device for a rotary processing tool that performs processing other than sealing and cutting, such as punching holes in wrapping paper and pasting labels. Further, in this embodiment, an inconstant speed rotation mechanism using an eccentric crank was used as the circumferential speed variable means, but the rotary seal cutter 5 is rotated by a motor separate from the main motor M, and its rotation speed is electrically controlled. There is no problem in using various other methods such as controlling. In this case, there is an advantage that the circumferential speed can be varied immediately and over a wide speed range by electrical control. Furthermore, in this example,
Although the configuration is such that the control motor PM5 is directly driven by a predetermined key in the keyboard 111 as a manual correction means,
The key data of the delay command key 111d and the advance command key 111f are temporarily transferred from the keyboard input circuit 110 to the control circuit 1.
00, the control circuit 100 controls the control motor PM
5 to perform manual correction is also suitable from the viewpoint of unification of control.

Although the embodiments of the present invention have been described above, the present invention is not limited to these embodiments in any way, and it goes without saying that it can be implemented in various forms without departing from the gist of the present invention.

[Effects of the Invention] As mentioned above, the device for adjusting the peripheral speed of a rotary processing tool for a packaging machine according to the present invention adjusts the peripheral speed of the rotary processing tool according to the packaging shape of the packaged object. When the circumferential speed is manually corrected, the setting amount of the circumferential speed setting means corresponding to the corrected circumferential speed is memorized, and the next time an object having the same packaging shape is packaged, The peripheral speed during machining is determined using the stored setting amount.

Therefore, the manual correction of the circumferential speed of the rotary processing tool, which was conventionally necessary to replace the packaged item, only needs to be performed for the first time for the packaged items that have the same packaging shape, and the setup This has the effect of significantly reducing man-hours. As a result, packaging of items with the same packaging shape can be processed under the same conditions, and good processed shapes (for example, cut shapes and seal shapes of packaging sheets) can always be obtained, and quality It also has the excellent effect of eliminating variations in terms of.

[Brief explanation of drawings]

Fig. 1 is a basic configuration diagram of the present invention, Fig. 2 is a schematic configuration diagram of a horizontal pillow packaging machine according to an embodiment of the present invention, and Fig. 3 is an inconstant speed rotation mechanism 24 that sets the peripheral speed of the rotary processing tool. FIG. 4 is a block diagram showing the configuration of a control system centering on the control circuit 100, FIG. 5 is a flow chart showing an outline of the control performed by the control circuit 100, and FIG. 7 is a flowchart showing a process of storing the setting amount of the eccentric crank for the circumferential speed after the circumferential speed of the rotary seal cutter 5 is corrected. 1... Supply conveyor 2... Feeding roller 5... Rotating seal cutter 24... Inconstant speed rotation mechanism 100... Control circuit 102 ...CPU 111 ...Keyboard PM1-5 ...Control motor PH81-8 ...Pulse transmitter agent Patent attorney Tsutomu Sadachi and one other person

Claims (1)

[Scope of Claims] 1. A packaging shape input means for inputting and covering the packaging shape of an object to be packaged, and a means for inputting a packaging shape that rotates at a speed corresponding to the moving speed of a packaging sheet that wraps the object to be packaged, and rotates the packaging sheet by φ without processing the packaging sheet. a circumferential speed variable means for varying the circumferential speed of the processing tool during processing; a circumferential speed setting means for providing the circumferential speed variable means with a setting amount corresponding to a predetermined circumferential speed of the rotary processing tool; and the packaging shape input means. Determining a correction amount for the circumferential speed of the rotary processing tool based on the input packaging shape of the packaged object, and controlling the circumferential speed setting means according to the correction amount to bring the circumferential speed of the rotary processing tool to the target circumferential speed. A circumferential speed adjusting device for a rotary processing tool for a packaging machine, comprising: a circumferential speed control means for determining the circumferential speed; and a manual correction means for manually controlling the circumferential speed setting means to correct the circumferential speed of the rotary processing tool from the target circumferential speed. The circumferential speed setting amount detecting means detects the set amount by the circumferential speed setting means, and the circumferential speed controlling means detects the corrected setting amount detected by the circumferential speed setting amount detecting means. If the packaging shape is the same 111 from the packaging shape input means, the circumferential speed setting means is controlled to store the same packaging shape. : A circumferential speed adjusting device for a rotary processing tool for a packaging machine, configured to apply a set amount to a circumferential speed setting means to determine the circumferential speed of the rotary processing tool. 2. The circumferential speed adjusting device for a rotary processing tool for a packaging machine according to claim 1, wherein the rotary processing tool is a rotary pinning machine for sealing. 3 The rotary processing tool is a rotary cutter 11yitjM that performs cutting.
A peripheral speed adjusting device for a rotary processing tool for a packaging machine according to claim 1. 4. The circumferential speed adjustment device for a rotary processing tool for a packaging machine according to claim 1, wherein the rotary processing tool is a rotary sealing and cutting machine that performs sealing and cutting. 5. The circumferential speed adjusting device for a rotary processing tool for a packaging machine according to any one of claims 1 to 4, wherein the packaging shape is a cut pitch. 6. The circumferential speed adjusting device for a rotary processing tool for a packaging machine according to any one of claims 1 to 4, wherein the packaging shape is determined by the cut pitch and the thickness of the packaged object. 7. The rotary processing tool for a packaging machine according to any one of claims 1 to 6, wherein the circumferential speed variable means is an eccentric crank mechanism, and the setting amount is the eccentricity of the eccentric crank. Peripheral speed adjustment device.