JPS60501807A - Blade-shaped folding device - 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] Blade-shaped folding device Technical field The present invention comprises at least one folding roll, a folding blade cooperating therewith, and a folding roll. A group of conveyor belts perpendicular to the axis of the rolls, and a conveyor belt arranged perpendicular to the belt group. The stop member and the sheet to be folded pass over the conveyor belt group. In addition, measure the distance of the sheet from the stopper member (two contacting sheets to be folded). the sheet detector to confirm that it is located in the non-detection range, and the sheet detector signal. A stop member (2) is used to notify the sheet detector that the introduced sheet has left the detection range. The folding blade control unit operates the folding blade after detecting the The drive unit is stopped when the detected sheet does not leave the detection area within a predetermined time. A blade-shaped folding device having a drive control section of 2 and 1 convex rollers. Regarding.

Background technology This type of blade-shaped folding device is proposed by German Patent Publication No. 022607. It is being proposed. In the device disclosed herein, the sheet detector has a light source and a light receiver. It is configured as a photocoupler. This photocoupler is suitable for the sheet to be folded. It becomes possible to receive light again when the sheet comes into contact with the stopper member and is ready to start folding. The conveyor belt is provided with a stop member perpendicular to the conveyor belt. On the other hand conveyor A clock pulse generator placed in direct communication with the conveyor belt generates a pulse signal indicating the speed of movement of the sheet on the sheet. Is it a tarok pulse generator? These pulse signals are applied to the control input terminal of a variable counter whose count value can be changed.

A variable counter counts each time the photocoupler detects the passage of a sheet. If the end of the sheet passes through the photocoupler by 1° when the specified tear value is reached, then The folding blade drive is activated. Also, before the end of the sheet passes through the photocoupler, When the predetermined count value is reached, the folding blade drive unit and conveyor belt drive unit stop. It will be reduced. According to this configuration, a sheet having a length different from a predetermined length can be folded by the folding blade. It can be prevented from being pushed into the folding gap of the folding roll, and It is possible to prevent the introduction of legal sheets into the stop member.

However, the above-mentioned well-known blade-type folding device (2S) has a length different from the predetermined length. The mechanism that stops the conveyor belt drive section when a sheet is received is the control section of the folding blade. It is a constituent part of. Therefore, the above-mentioned folding mechanism is attached to the existing folding device. It was difficult to do so. In addition, when the above-mentioned folding mechanism is removed, the device cannot be driven. was not possible. Furthermore, the above-mentioned known blade-type folding device It is necessary to adjust the size of the sheet to be folded. A count value corresponding to the sheet length is entered manually on the counter. This adjustment is made by the folding device. It is essential for the operation, and the work requires a long time, especially when converting inches to centimeters. This tendency was noticeable when it was necessary to calculate

When the sheet to be folded reaches the stop member, it is placed in the folding gap. It is necessary to pause for a certain amount of time before it is inserted, but you can also set this pause time. The above-mentioned rest time is difficult to achieve with conventional folding devices. It corresponds to the operating speed, so if the operating speed is constant, when adjusting the counter, Is it possible to take into account that the operating speed is constant in tact-controlled folding devices? It was difficult to set the time because the L2 was not fixed [). Furthermore, the known folding device has an operating speed that is always the same as that of another folding device that precedes it. It can only be used when the folding device is In general, the speed is not the same as the previous stage folding device.For example, the previous stage folding device Sea 1 is held at a relatively low speed on the folding rolls of the device. this sheet When switching to a well-known blade-type folding device, is the photocoupler sheet longer than it actually is? It is used as a long sheet, and the predetermined count value is reached before the end of the sheet is detected. The blade-shaped folding device will stop immediately. Disclosure of the invention in which the mold folding device becomes inoperable The purpose of the invention is to eliminate the drawbacks of conventional folding devices and to adjust them accordingly to the dimensions of the sheet. but? It is easy to operate, can operate without stopping the drive in the event of a failure, and l] Folding of a blade type of the type mentioned above which can be operated independently of the speed of the folding device The goal is to provide equipment.

This object is achieved by the structure recited in claim 1. In the folding device, adjustment according to the sheet dimensions is made using a photocoupler. The trailing edge of the sheet that comes into contact with the IL folding part and remains stationary during the folding operation. This is achieved by locating it at a predetermined distance from. This is a simple operation can be performed without requiring calculations or special knowledge.

The drive control unit stops the conveyor belt drive unit of the folding device when a failure is confirmed. It is independent from the control section of the folding blade, and therefore can be easily installed in existing folding equipment. It is easy to use, and the drive control unit can achieve the desired purpose without changing the folding blade control unit. It can be achieved.

A significant advantage of the present invention is the ability to stop the drive in the event of a failure. The time to market can be virtually determined, and even after a fault has been detected, multiple The point is that the sheet can be introduced towards the stop member. This fault can be easily removed and The removal time is also reduced by operating at a relatively low speed, with the front folding 7 nozzle supporting the sheet. It smoothly receives the z-t from the device and induces the stop of the drive part of the subsequent folding device. Therefore, the folding device of the present invention can be easily applied to other folding devices. It is possible to operate it in combination with the

In many cases, the time until the drive stops can be adapted to the operating speed of the folding device. It is desirable to make it different. Therefore, in the present invention, the signal according to the actuation method is used. 1, which can automatically control the length of time until the drive unit stops; In an exemplary embodiment of the present invention, f% of the drive unit -5q, -0', ·) time is controlled according to the sheet length using a tact-controlled folding device. This folding In the device, a potentiometer is used to adjust according to the sheet length, and the slider The appropriate signal is generated by the potentiometer and the potentiometer signal is set at the required speed. In combination with the signal applied to the control input of the timer, the time is regulated and this predetermined time If the sheet does not leave the detection range of the sheet detector within 1-2 seconds, i.e. If the sheet length is different from the specified length or the sheet is not conveyed parallel to the stopper member. If not, the conveyor belt drive is stopped after a predetermined period of time has elapsed.

Other preferred embodiments of the invention are set out in the dependent claims.

Other features and advantages of the invention will become apparent from the following description, along with examples of embodiments shown in the accompanying drawings. It will be.

Brief description of the drawing Figure 1 shows the main parts of the folding mechanism according to the invention and the stops perpendicular to the conveyor belt. A simplified explanatory diagram showing the relative relationship of the sheet detector to the member, FIG. 2 shows the first part of the drive side section of the drive section of the conveyor belt according to the present invention. 1. ,”) Block diagram, Fig. 3 shows the drive of the conveyor belt drive unit according to the present invention. A block diagram of another embodiment of the control unit is shown below.

BEST MODE FOR CARRYING OUT THE INVENTION The folding mechanism of the blade folding device, schematically shown in Figure 1, includes four mutually parallel conveyors. The conveyor bell) 10, 12, 14.16 is provided, and the conveyor bell) 10. 12.1:4.16 are two rolls 18, 20 arranged parallel to each other and spaced apart from each other. At least one of the rolls 18 and 20 connects the conveyor The bolts 10.12, 14.16 are driven. In the same figure, Ichiriki roll J8 is shown as a solid line. The other roll 20 is shown schematically with a dotted line. The sheet to be folded is conveyor belt) 1.0, 12, 14.16-42 in the conveyance direction of arrow F. A stopper member 22 disposed perpendicular to the feeding direction F and a conveyor conveyed in the opposite direction A folding blade 24 is installed between the conveyor belts 10, 12.14 , 16, and the folding blade 24 is arranged in the F direction of the conveyor belt. A folding mechanism (not shown) and a folding mechanism (not shown) are provided. Folding again The folding blade 24 is configured such that its movement is controlled by a folding blade control section (not shown). It is set in.

On the other hand, the sheet detector 26 that records the passage of the sheet is parallel to the conveyor belt. The sheet detector 26 is mounted on the rail 28 and moves along the rail 28. (Secondly, the distance from the stop member 22 can be adjusted. A light detector 26 (the second preferably includes an optocoupler and is fixed to the rail 28+) A fixing screw 30 is attached.

A sheet to be folded (not shown) is introduced into the folding mechanism (conveyor bell) 1 ．． 0, 12.14, 16J2 and its leading edge reaches the top of the sheet detector 26. A signal is generated from the sheet detector 26 when the sheet is moved to the closing member 22. When the sheet is introduced to 71 degrees, it is held by the stopper member 22 for a short time, and at this time, the sheet is folded. Blade 24: Two folding rolls (folded toward the folding gap (not shown)) be included. At what distance between the stop member 22 and the sheet detector 26 is the front line of the sheet located at the stop? Material 22. When the two sheets are paired, the trailing edge of the sheet to be folded has already touched the sheet I/detector 26. Adjustment is made so that the brazing member 22 is in a continuous If not, or if the length of the sheet exceeds the specified dimensions, The edge will not pass through the i/-tix output 26 and there will be no possibility that there will be a sheet. Preferably, a signal is generated, for example, to stop the folding blade 24 from operating. Yes.

FIG. 2 shows conveyor belts 10, 12, 14. , , Controls 1 drive unit of 1.6 A first embodiment of a drive control unit is shown in a block diagram. Timer 32 is simple Consisting of a constant multivibrator, its operating time is controlled via the control input terminal 34. 0, the timer 32 further has a reset input 36 to maintain and reset the timer. The input terminal 36 is connected to the output terminal of the sheet detector 26 by connecting the signal line to the output terminal 9. Also, the output 38 of the output 1732 is controlled by the inverting input terminal of the AND circuit 40. The non-inverting input terminal of the AND circuit 40 is connected to the output t' of the sheet detector 26. connected to the The output terminal of the AND circuit 40 is connected to the input terminal of the amplifier 42 to control it. The output signal from the amplifier 42 is 10, 12, 14, 16. A device (not shown) for stopping the drive of the device is provided to control this device. The output terminal of the differential amplifier 44 is connected to the control input terminal 34 of the wax timer 32 . The control unit from 4 is connected to control the operation of the timer 32, The inverting input terminal of the differential multiplier 44 is connected to the output terminal of a tachometer 46. this If the tachometer 46 itself is a conveyor bell) 10, 12. Driving speed of I4, 16 It generates an output signal proportional to and sends it to the inverting input terminal of the differential amplifier 44. The non-inverting input of the device 44 is the output of a control unit 48 containing a potentiometer. in this case by operating the potentiometer slider. signal is generated. This control unit 48 is used in particular for so-called tact-controlled folding. It is attached to the folding device and can generate an output signal depending on the length of the sheet to be folded, e.g. As is well known, the folding blade 24 can be applied to the two lower movable parts of the folding blade 24. The present invention The output signal from the lever control unit 48 is connected to other parts of the folding device, namely the timer. It will also be used to adjust the set time of 32.

Therefore, the differential amplifier 44 has a length of introduction of the sheet from the adjustment unit 48. The difference between the representative signal and the speed signal from tachometer 46 is calculated. This will cause the This difference signal is applied to the input terminal 34 of the timer 32, and the set time of the timer 32 is determined. The signal sent from the sheet detector 26 at the end of this set time is the signal sent out after the sheet. When the edge does not indicate that it has passed the sheet detector 26, the timer 32 is activated. After the set time has elapsed, the amplifier 42 is controlled via the AND circuit 40 and the conveyor The drives of the routes 10, 12, 14, 16 can be stopped.

That is, the intensifier "1" 42 detects the sheet after the sheet detector 26 detects the leading edge of the sheet. When a predetermined set time has elapsed without the trailing edge of the sheet being detected by the device 26. , will give a stop signal to the conveyor belt drive. This setting time is The length of the conveyor belt of the folding mechanism corresponds to the length of the folding mechanism. 1, which corresponds to the operating speed, and the setting time of timer 32 as the introduction length of the sheet increases. increase. This setting also increases the operating speed of the conveyor belt of the folding mechanism. Time decreases. Therefore, the introduction length of the sheet in the folding mechanism and the conveyor belt The setting time of the timer: 32 can be automatically adjusted according to the operating speed of the It is now possible to stop the folding rail structure extremely quickly in the event of a failure, which can lead to failures, etc. can be easily removed. In this case, the set time of timer 32 is The sheet length is longer than the specified length or the sheet is conveyed diagonally. When the second sheet is introduced after the sheet reaches the stop member 22, the sheet is folded. Preferably, it is determined that the scanning mechanism is stopped. When the number of sheets increases, On the other hand, if the sheet length to be folded is longer than the specified length, Or, if the sheet is conveyed diagonally, immediately after the sheet comes into contact with the stopper member 22. If you stop the conveyor belt immediately, it will operate at a relatively low speed and the sheets to be folded will When the sheet is received from the previous device that holds the sheet, the sheet is 10, 12, 14. 16. There is a risk of being stopped. Therefore, the operating time of the timer 32 is determined by the time when the leading edge of the sheet is detected. After the sheet is detected by the sheet detector 26, the sheet completely leaves the detection area of the sheet detector 26. It is preferable that the time is set substantially longer than the time required to do so.

FIG. 3 shows another embodiment of the drive control section, and in this embodiment, the control unit The differential amplifier 48, the differential amplifier 44, and the amplifier 42 are the same as those in the embodiment shown in FIG. No explanation is necessary. - In the used book embodiment, the amplifier 42 has a control signal as shown in FIG. is given from the output terminal of the threshold detector 50 instead of the AND circuit 40 in the embodiment of The setting input terminal 52 of the threshold detector 50 is connected to the output terminal of the differential amplifier 44. The signal input terminal 54 is connected to the output terminal of the integrator 56, and the signal input terminal 54 is connected to the output terminal of the integrator 56. The input end of 56 is connected to the output end of sheet detector 26.

The inverting input terminal of the differential amplifier 44 receives the output signal of the frequency/voltage converter 58. The signal input terminal 60 of the frequency/voltage converter 58 is connected to its output terminal as shown in FIG. It is connected to the output end of the output generator 62. The tact generator 62 is a tact control type generator. The folding device is equipped to determine the operating speed of the tact. Also frequency/voltage The output voltage of converter 58 is a DC voltage, and the output voltage level depends on the operation of the folding mechanism. It is configured to be proportional to the moving speed.

The embodiment of FIG. 3 also includes a timer constituted by the threshold detector 50. As soon as the signal from the integrator 56 reaches the output signal level of the differential amplifier 44, It operates to send an output signal to the amplifier 42. The output signal of the integrator 56 is This is the time integral of the human input signal from the sensor 26, and the input to the detection line increases with time. When it is increased, the output level of the integrator 56 increases.

The embodiments shown in Figs. 3 and 3 are particularly applied to a tact-controlled folding device, and the embodiments shown in Fig. 2 are This is useful because the tachometer can be omitted.

On the other hand, in place of the tachometer 46 in the embodiment shown in FIG. A signal generator 62 and a frequency/voltage converter 58 may also be used and the implementation of FIG. In the example, the timer 32 of the embodiment of FIG. 2 may be used instead of the integrator 56.

Each component of the embodiment shown in FIGS. 2 and 3 can be realized using well-known parts. Ru. Therefore, since the benefits of the components of -it et al. will be readily understood by those skilled in the electronic arts, Components are not individually detailed.

FIG 1 FIG.2 international search report A) INEX To ThP, INTERNATIONAL SEA, 1IC HREPORT　0NThe　European　Patent　office is in no way liable for death hesepartic ulars which are usually given for +:h e purposa o E information.

Claims (1)

[Claims] 1) at least one folding roll, a folding blade that cooperates with the folding roll, and a folding blade that cooperates with the folding roll; A group of conveyor belts that run perpendicular to the axis of the folding rolls and a group of conveyor belts that run perpendicular to the axis of the folding rolls Passage of the sheet to be folded on the conveyor belt and the stop members disposed orthogonally to each other is detected and the sheet to be folded that is in contact with the stopper member is stopped so that it is located in the non-detection area. Using a sheet detector whose distance from the stopping member is set and the signal from the sheet detector, After the sheet introduced into the sheet member is detected by the sheet detector, it is detected by the note detector. The folding blade control unit and sheet detector that leave the detection area (and sometimes activate the folding blade) The sheet detected by the sheet detector 6) does not leave the detection area within a predetermined time. A blade type having a drive control part that sometimes stops the drive part of the conveyor belt. In the folding device, the sheet detector (26) detects the distance from the stop member C22). It is adjustable according to the sheet length, and the drive control section is independent from the folding blade control section. After a predetermined period of time has elapsed, the sheet detector (26) detects the sheet. The seat did not exit the detection area of the sheet detector (26) within this predetermined time (-) Conveyor bell) (+0.12° 14, 16) is configured to stop driving when A folding device characterized by: 2) A predetermined period of time from the detection of the sheet by the sheet detector 06) The actual time required from detection by the detection area to departure from the detection area The folding device according to claim 1, wherein the folding device is made longer in length. 3) Sheet detector (2) The predetermined time from the detection of the sheet by the smell to the stop member When the sheet does not leave the detection area of the sheet detector (26) after the sheet is introduced , the charge is set to the time at which 9 more sheets are introduced before the drive stops. 2. The folding device according to item 2. 4) The folding device according to claim 3, wherein n=1. 5) The fold according to claim 3, where the maximum number is n-2 or more, and the maximum number can be repaired due to failure. Folding device. 6) The drive control section has a timer (32; 56, 50), and the control input terminal of the timer is Any of claims 1 to 5 connected to the counter output of the gate detector (26). The folding device according to any one of the above. 7) The timer (32; 56.%) has an adjustable operating time. Folding device as described. 8) The operating time of the timer (32; 56, 50) is determined by the conveyor belt (IO1+2. Claim 7 is controlled by a speed-dependent signal according to the speed of 14.16). Folding device as described in section. 9) The operation time of the timer (32; 56. (7)) is determined by the sheet introduction length control unit. The folding according to claim 7, which is controlled by a signal sent from the Device. 10) Speed signal and control unit (signal sent from 4al is transmitted to differential amplifier 0. 0 input terminal, and the output of the differential amplifier is input to the timer (32; 56, 5111). The folding device according to claim 8 or 9, which is sent to the input terminal <34:52) Place. 1]) The speed signal is connected to the drive part of the conveyor bell) (10, 1, 2, 14, 16). Claim 8 or 6) delivered by a combined tachometer generator The folding device according to item 10. 12) The speed signal is sent out by the frequency/voltage converter (58) and the frequency/voltage converter The converter converts the tact signal of the tact signal generator 462) that controls the drive unit into a tact signal frequency. The folding according to claim 8 or 10, which converts the voltage signal into a voltage signal proportional to the wave number. Device. 13) The timer is composed of a monostable multivibrator (3a), and the timer control The input terminal 04) is connected to the output terminal of the differential amplifier (44). 13. Folding device according to any one of clauses 12 to 13. ]4) The timer consists of a threshold detector (50) and an integrator (56), and the timer The output end of the timer is connected to the signal input end 64) of the threshold detector (50), and the threshold The threshold setting input terminal of the value detector (0) is connected to the output terminal of the differential amplifier (44). and the input end of the integrator 66) is connected to the output end of the sheet detector (26). The folding device according to any one of the ranges 6 to 12. 15) The sheet detector detects the rail (2) parallel to the introduction direction (F) of the sheet to be folded. 8) It is movable in the rail country (2) and can be fixed in place (2) According to any one of claims 1 to 14, the distance between the two sides is adjustable. Folding device.