JP4132495B2 - Sealing machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a sealing machine that folds and seals a sheet and achieves miniaturization.
[0002]
[Prior art]
Sealing bodies that are folded and sealed are widely used for postal items such as invoices and bills, and for payroll statements. This type of sealed body is generally opened by cutting the three surrounding sides with perforations. Conventional sealing bodies are sold in a state where a carbon copy-type glue sheet pre-printed with a form is folded with carbon inside and sealed, and the purchaser drives the sealing body from the outside with an impact printer and puts it into the internal form. The amount of money and other matters were printed by carbon copy.
[0003]
[Problems to be solved by the invention]
The conventional sealing body cannot print fine characters because it prints on the inside by carbon copying with an impact printer. In addition, when changing the form, it is necessary to reprint the form each time, and it is difficult to change the form.
[0004]
In order to solve such problems, it is also possible to use a non-encapsulated carbon-free adhesive sheet with no form printed on it, print necessary information with a page printer, etc., and then fold and seal with a sealing machine. ing. However, conventional sealing machines are only large-scale, such as those used to issue telephone bills, and cannot be installed at small offices.
The present invention is intended to solve the problems in the prior art and to provide a sealing machine that achieves miniaturization.
[0005]
[Means for Solving the Problems]
The present invention relates to a sheet feeding table on which sheets that are sealed by folding with a predetermined folding line and applying pressure or pressure and heat are placed in a bundle, and the sheets are taken out from the sheet feeding table one by one and conveyed. A sheet feeding device that receives the conveyed sheet, folds the folded sheet along the folding line, and discharges the sheet to a lower position of the sheet feeding table, and is disposed at a lower position of the sheet feeding table. It comprises a sealing device that receives a folded sheet discharged from the device and seals it by applying pressure or pressure and heat. According to this, since the sealing device that seals the sheet folded by the paper folding device by applying pressure or pressure and heat is disposed at the lower position of the paper feed table, the entire size can be reduced. The storage unit may further include an accommodating portion that accommodates the sealed sealing body discharged from the sealing device in a lower position of the sheet feeding table. Further, the paper folding device and the sealing device can be driven by sharing a driving device disposed at a position below the paper folding device. In this case, the drive device can drive the sealing device, and the paper folding device can be driven through the sealing device. Further, the driving device can be configured to intermittently drive the paper feeding device via a clutch. Further, the paper folding device is folded by setting a relative position of the paper folding device and the sealing device so that the sealing device grips the leading end of the sheet before releasing the rear end portion of the folded sheet. Therefore, the sheet can be transferred to the sealing device while maintaining the posture of the sheet, and can be prevented from being sealed in a wrinkled state or being stored in the storage unit in a separated posture after sealing.
[0006]
For example, the sheet feeding device causes the sheet feeding roller to contact the surface of the uppermost sheet of the sheet bundle placed on the sheet feeding table, and drives the sheet feeding roller to remove the uppermost sheet. It can comprise so that it may convey toward the said paper folding apparatus. Further, the paper folding device includes, for example, a driving roller disposed at a front position in the conveyance direction of a sheet conveyed by the paper feeding device, and a first driven roller that is driven in contact with the upper surface side of the driving roller. A second driven roller that is driven in contact with the back side of the driving roller as viewed from the paper feeding device side, and a third driven roller that is driven in contact with the lower surface side of the driving roller; A guide space is formed in which an opening is disposed at a position sandwiched between the driving roller and the first and second driven rollers, and a stopper is formed at an appropriate distance from the opening in the guide space. A first guide member that guides the sheet from the opening to the guide space so that the sheet can be taken in and out; and a guide space in which the opening is disposed between the driving roller and the second and third driven rollers. Formed from the opening of the guide space A stopper is formed at a position at a suitable distance, and includes a second guide member that guides the sheet into and out of the guide space from the opening, and includes the driving roller and the first, second, and third rollers. The rotation axes of the driven rollers are set in parallel to each other and in a direction orthogonal to the conveyance direction of the sheet conveyed by the sheet feeding device, and the sheet conveyed by the sheet feeding device is set to the drive roller and the first Are guided by the first guide member, the leading end of the sheet is locked by the stopper of the first guide member, the sheet is bent at a predetermined folding line, and the bent portion is At the beginning, the sheet is sandwiched between the driving roller and the second driven roller and guided to the second guide member, and the bent portion is locked by a stopper of the second guide member to separate the sheet from another Bend along the specified fold line , It can be configured to the sheet at the beginning of the portion where bending said in the 3-fold through insertion at the third driven roller and said drive roller for discharging the sealing device of the feeding table of the lower position.
[0007]
The sealing device includes, for example, upper and lower pressure rollers arranged in front of a folded sheet discharged from the paper folding device, and the rotation axes of the pressure rollers are parallel to each other and the It is set in a direction orthogonal to the discharge direction of the folded sheet discharged from the paper folding device, and the folded sheet discharged from the paper folding device is sandwiched between the upper and lower pressure rollers, and pressure or pressure and heat And can be configured to be sealed. In this case, for example, the upper and lower pressure rollers are arranged so as to be offset from each other in the front-rear direction, and one pressure roller is arranged so as to be movable in a direction perpendicular to the rotation axis. By applying a pressing force to the roller with a pressing member in the moving direction, the pressing force between the upper and lower pressure rollers can be adjusted.
[0008]
The sealing machine according to the present invention includes a light emitting element and a light receiving element that are disposed in a midway position between the paper feed table and the paper folding device and facing each other with a sheet conveyed by the paper feed device interposed therebetween. A control device for detecting the occurrence of a light receiving output of a predetermined value or less when the sheet passes based on the light receiving output of the element and stopping the driving of the paper feeding device, the paper folding device, and the sealing device; Furthermore, it can comprise. A discharge detection device that detects discharge of the sealing body from an outlet of the sealing device; and a discharge of the next sealing body within a predetermined period after the discharge detection device detects discharge of the sealing body. The apparatus may further include a control device that stops driving the paper feeding device, the paper folding device, and the sealing device when it is not detected. A discharge detection device that detects discharge of the sealing body from an outlet of the sealing device; and confirms that the discharge detection device has detected discharge of the sealing body, and drives the paper feeding device. And a control device for starting conveyance of the next sheet.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below. FIG. 1 is a side view showing an outline of the internal configuration of a sealing machine 10 according to the present invention, and FIG. 2 is a plan view showing a driving mechanism thereof. The sealing machine 10 includes a sheet feeding table 14, a sheet feeding device 16, a paper folding device 18, a sealing device 20, a storage unit 22, and a driving device 24 in a housing 12. The paper folding device 18 is disposed in front of the paper feeding device 16 in the paper feeding (conveyance) direction. The sealing device 20 and the storage unit 22 are disposed below the sheet feed table 14. The driving device 24 is disposed at a position below the paper folding device 18. As shown in FIG. 2, support plates 26, 28 extend in the front-rear direction and are arranged upright in parallel with each other on the bottom surface of the housing 12. The device 18 and the sealing device 20 are supported between the support plates 26 and 28.
[0010]
The sheet feeding table 14 is composed of a main table 30 and an auxiliary table 32 arranged continuously at the rear end thereof. The sheet feeding table 14 is arranged almost horizontally, and the sheet bundle 34 after printing is placed in the longitudinal direction in the longitudinal direction of the sealing machine 10. It is placed in a posture that matches. The auxiliary base 32 is rotatably supported on the support plates 26 and 28 by a rotary shaft 36, and is folded upward and supported on the main base 30 when the sealer 10 is not in use. It is configured so that it can be stored inside. The main table 30 is rotatably supported on the support plates 26 and 28 by a rotation shaft 36, and the front portion (sheet discharge port side) is pushed upward by an urging force of a spring. The front end portion of the sheet bundle 34 is locked by a stopper 38.
[0011]
The sheet feeding device 16 includes a rotating shaft 40 that is rotatably supported by support plates 26 and 28 at an upper position near the front end of the sheet feeding table 14, and is made of rubber at a central position in the longitudinal direction of the rotating shaft 40. A paper feed roller 42 is fixedly arranged. Further, auxiliary rollers 44 and 46 made of plastic or the like are fixedly arranged at front and rear positions in the longitudinal direction with the paper feed roller 42 interposed therebetween. The sheet bundle 34 on the sheet feeding table 14 is pressed against the sheet feeding roller 42 by an upward biasing force applied to the front portion of the sheet feeding table 14. By rotating the paper feed roller 42, the uppermost sheet 48 of the paper feed table 14 is sent out in the direction along the paper surface, passes over the stopper 38, and is discharged in the horizontal direction. The sheet 48 is made of A4 size paper and is folded in three into a Z shape and sealed in a standard postal-size sealed body. The perforated lines are formed at two folding lines (reference numerals 177 and 179 in FIG. 4). To make it easy to bend. The sheet 48 is preliminarily coated with pressure-sensitive adhesive at predetermined locations along the peripheral edge and the fold line. In addition, necessary items are already printed on the sheet 48 by a page printer such as a laser printer.
[0012]
The sheet 48 discharged from the paper feeding device 16 slides on the support base 50 and is sent to the paper folding device 18. An opening 52 is formed in a part of the support base 50, and the light emitting element 51 and the light receiving element 53 are arranged opposite to each other at the upper and lower positions of the support base 50 with the opening 52 interposed therebetween. When the sheet 48 slides on the support base 50, one side edge portion of the sheet 48 blocks the optical path from the light emitting element 51 to the light receiving element 53. At this time, the amount of light received by the light receiving element 53 (the amount of light transmitted through the sheet 48) is reduced. By detecting, it is possible to detect whether only one sheet 48 is correctly discharged or two or more sheets 48 are overlapped and discharged.
[0013]
The paper folding device 18 includes four rollers 54, 56, 58, 60 and two blades 62, 64 (guide members). The central roller 54 is a rubber drive roller. The rollers 56, 58, and 60 are metal rollers, and are driven in contact with the upper surface, the back surface, and the lower surface of the driving roller 54. Gears 74, 76, 78, and 80 are fixed to one end portions of the rotation shafts 66, 68, 70, and 72 of the rollers 54, 56, 58, and 60, respectively. The gears 74, 78, 80 fixed to the rotation shafts 68, 70, 72 of the driven rollers 56, 58, 60 mesh with the gear 74 fixed to the rotation shaft 66 of the drive roller 54, respectively. The driving force of the shaft 66 is reliably transmitted to the driven rollers 56, 58 and 60. The vane plate 62 is assembled by forming a guide space 86 by arranging two metal plates 82 and 84 to face each other with a predetermined gap therebetween. A stopper 88 is sandwiched at an appropriate position in the guide space 86. The stopper 88 can be slid in the vertical direction in the guide space 86 by loosening the screw 90, whereby the length of the guide space 86 can be adjusted. The opening 92 of the guide space 86 is open in a space between the rollers 54, 56, and 58. The vane plate 62 is detachable, and can be removed when a so-called jam occurs to take out the sheet 48. Further, when the sealing machine 10 is not used, the blade plate 62 can be removed and stored in the housing 12. A cover 93 that covers the blade 62 is detachably mounted on the upper surface of the housing 12. The vane plate 64 is assembled by forming a guide space 98 by arranging two metal plates 94 and 96 to face each other with a predetermined gap therebetween. A stopper 100 is sandwiched at an appropriate position in the guide space 98. The stopper 100 can be slid in the vertical direction in the guide space 98 by loosening the screw 101, whereby the length of the guide space 98 can be adjusted. The opening 103 of the guide space 98 is open in a space between the rollers 54, 58, and 60. The slat 64 is detachable and can be removed when a so-called jam occurs to take out the sheet.
[0014]
The sheet 48 fed from the paper feeding device 16 to the paper folding device 18 through the support base 50 is first drawn between the rollers 54 and 56 and fed into the guide space 86 from the opening 92. When the sheet 48 passes between the rollers 54 and 56 to the 2/3 position in the longitudinal direction, the leading end of the sheet 48 is locked by the stopper 88. Since the sheet 48 is still fed by the rollers 54 and 56, the sheet 48 is bent downward at a perforation (fold line) formed at a position 2/3 in the longitudinal direction. The bent portion is then drawn between the rollers 54 and 58 and fed into the guide space 98 from the opening 103. When the folded portion of the sheet 48 passes between the rollers 54 and 58, the leading end portion (folded portion) of the sheet 48 is locked by the stopper 100. Since the sheet 48 is still fed by the rollers 54 and 58, the sheet 48 is bent sideways at the other perforation (folding line). The bent portion is then drawn between the rollers 54 and 60 and discharged. As a result, the sheet 48 is folded in three into a Z shape.
[0015]
The three-folded sheet 48 discharged from between the rollers 54 and 60 slides on the slope 105 and is fed into the sealing device 20. The sealing device 20 includes two upper and lower metal pressure rollers 107 and 109, and draws and presses the leading end portion of the three-folded sheet 48 fed through the slope 105 between the pressure rollers 107 and 109. Sealed by the action of pressure sensitive glue. When the leading edge of the sheet 48 is pulled between the pressure rollers 107 and 109, the trailing edge of the sheet 48 is still sandwiched between the rollers 54 and 60 of the paper folding device 18 (such positional relationship). The position of the sealing device 20 with respect to the paper folding device 18 is set so that the sheet 48 is in the correct posture (the state where the sheet 48 is not bent obliquely with respect to the conveyance direction). It is sent in between 109. Therefore, wrinkles are prevented from being sealed and deposited in the accommodating portion 22 in a disassembled posture after sealing.
[0016]
Near the outlets of the pressure rollers 107 and 109, a transmissive photoelectric switch 115 (discharging detection device) in which a light emitting element 111 and a light receiving element 113 are arranged opposite to each other above and below a position where the sealed sheet 48 (sealing body 48a) passes. ) Is arranged. When the photoelectric switch 115 is shielded from light, the discharge of the sealing body 48a from the pressure rollers 107 and 109 is detected. The sealing body 48 a that has passed through the discharge detection device 115 falls and accumulates on the stacker 117 disposed in the storage unit 22. The stacker 117 can be taken out by opening the front lid 119 of the housing 12.
[0017]
The driving device 24 includes a motor with a built-in speed reducer, and is shared as a driving source for the paper feeding device 16, the paper folding device 18, and the sealing device 20. A rotating disk 123 is fixed to the end of the output shaft 121 of the driving device 24. Notches 125 and 127 are formed on the peripheral edge of the rotating disk 123. A photoelectric switch 129 is supported on the support plate 26. The photoelectric switch 129 is configured by arranging a light emitting element and a light receiving element to face each other with the peripheral edge of the rotating disk 123 interposed therebetween, and detects the notches 125 and 127 of the rotating disk 123. This photoelectric switch 129 is used to detect whether the driving device 24 is rotating normally.
[0018]
In the housing 12, a limit switch 135 that detects opening and closing of the back cover 133, a control device 131, and the like are disposed. When a jam occurs on the blades 64, the back cover 133 can be opened to remove the blades 64, and the sandwiched sheet can be taken out. At that time, the limit switch 135 detects that the back cover 133 is opened, and the power supply to the drive device 24 is surely cut off to ensure safety. Rubber legs 137 are attached to the lower surface of the housing 12.
[0019]
A driving mechanism by the driving device 24 will be described with reference to FIG. The rotating shafts of the drive mechanism are arranged in a direction perpendicular to the traveling direction of the seat 48 and in the horizontal direction. A gear 139 is fixed to the output shaft 121 of the drive device 24. A shaft 141 is erected on the support plate 26, and a gear 143 is rotatably attached. The gear 143 meshes with the gear 139 and rotates. A gear 147 is fixed to one end portion of the rotating shaft 145 of the upper pressure roller 107 that rotates integrally with the upper pressure roller 107. The gear 147 meshes with the gear 143 and rotates with the rotation shaft 145. Gears 149, 151, and 153 are fixed to the other end of the rotating shaft 145, respectively, and rotate together with the rotating shaft 145. The gear 151 meshes with a gear 157 fixed to the rotating shaft 155 of the lower pressure roller 109 that rotates integrally with the lower pressure roller 109 to rotate the lower pressure roller 109. The gear 153 meshes with a gear 161 attached via an electromagnetic clutch 159 to the end of the rotation shaft 40 of the paper feed roller 42 and rotates the gear 161. When the electromagnetic clutch 159 is turned on, the rotation of the gear 161 is transmitted to the rotating shaft 40, and the paper feed roller 42 and the auxiliary rollers 44 and 46 are rotated. When the electromagnetic clutch 159 is turned off, the rotation of the gear 161 is transmitted to the rotating shaft 40. The paper feed stops.
[0020]
A gear 163 is fixed to the end of the rotation shaft 66 of the driving roller 54 that rotates integrally with the driving roller 54 of the paper folding device 18. A timing belt 165 is put between the gears 163 and 149, and the rotation of the gear 149 is transmitted to the gear 163 via the timing belt 165 to drive the driving roller 54. A shaft 167 is erected on the support plate 28, and a roller 169 is rotatably attached to the shaft 167. The roller 169 is in contact with the outer peripheral surface of the timing belt 165 and applies an appropriate tension. The rotation of the driving roller 54 is transmitted to the driven rollers 56, 58, 60 via the gears 74, 76, 78, 80 as described above (by contact between the surfaces of the rollers 54, 56, 58, 60). Is also transmitted).
[0021]
The pressure adjusting mechanism of the pressure rollers 107 and 109 will be described with reference to FIG. The positions of both ends of the rotating shaft 145 of the upper pressure roller 107 are fixed. Both ends of the rotation shaft 155 of the lower pressure roller 109 are supported by movable members 171. The movable member 171 is supported by support plates 26 and 28 (FIG. 2) so as to be movable in a horizontal direction (arrow A direction) orthogonal to the rotation shaft 155. Support blocks 173 are respectively fixed to the support plates 26 and 28, and screws 175 are respectively screwed in the horizontal direction. The tip of the screw 175 contacts the movable member 171 and presses in the horizontal direction. The pressure rollers 107 and 109 are arranged offset in the horizontal direction, and the outer peripheral surfaces are in contact with each other. The offset amount is adjusted by manually adjusting the screwing amount of the screw 175 at both end positions of the rotating shaft 155, whereby the pressing force between the pressure rollers 107 and 109 can be adjusted.
[0022]
The process of the sealing process by the sealing machine 10 demonstrated above is shown in FIG. (1) The uppermost sheet 48 is fed out from the sheet bundle 34 placed on the sheet feeding table 14 by the sheet feeding device 16, and is guided to the blade plate 62 on the upper side of the sheet folding device 18. The When it is locked by the stopper 88, it is bent along the folding line 177 and is guided to the lower blade 64 while performing the first folding. When the leading end (the portion bent by the folding line 177) is locked by the stopper 100, it is folded by the folding line 179 and discharged from the paper folding apparatus 18 while performing the second folding. (6) The discharged sheet 48 is pressurized and sealed by the sealing device 20 and (7) is deposited on the stacker 117 of the accommodating portion 22.
[0023]
The system configuration of the control system in the sealing machine 10 is shown in FIG. In addition to the power switch, the sealing machine 10 includes a start switch 181 for starting the sealing operation and a stop switch 183 for stopping the sealing operation halfway. In addition, an error lamp 185 that is turned on when an error occurs is provided. Each detection signal of the limit switch 135 that detects opening / closing of the back cover 133, the discharge detection device 115 that detects discharge of the sealing body 48 a from the sealing device 20, and the photoelectric switch 129 that detects the lock of the driving device 24 is sent to the control device 131. Entered. The light receiving output of the light receiving element 53 for detecting the overlap feed is input to the comparator 187, compared with a predetermined reference value, and when it is equal to or less than the reference value, the overlap feed detection signal is output and input to the control device 131. The timer 189 measures time and inputs the timer value to the control device 131. Based on the operation of each operation switch and each detection signal, the control device 131 performs on / off control of the drive device 24 via the motor drive circuit 191, on / off control of the electromagnetic clutch 159, start, stop and reset of the timer 189. Control, lighting control of the error lamp 185, and the like are performed.
[0024]
FIG. 6 shows a control flow of the sealing work by the control system of FIG. In FIG. 6, * indicates an operation or determination by the operator, and the other indicates control or determination by the control device 24. The power switch is turned on (S1), and the sheets (sheet bundle 34) are set on the sheet feed table 14 (S2). At this time, the timer 189 is stopped. When the start switch 181 is turned on (S3), the motor (driving device 24) is activated and the timer 189 is reset to start counting (S4). Next, the electromagnetic clutch 159 is turned on (S5), and paper feeding is started. After a time required for the leading edge of the sheet 48 to be pulled into the paper folding device 18 has elapsed (S6), the electromagnetic clutch 159 is turned off (S7). Overlap detection is performed based on the output of the light receiving element 53 (S8), and when the overlap feed is detected (when the light reception output falls below a predetermined value), the driving device 24 is stopped (S9) and the error lamp 185 is turned on. Lights up and the timer 189 is stopped (S10). The overlap feed detection is continuously performed while the power switch is turned on. When the light reception output of the light receiving element 53 falls below a predetermined value at any time, the driving device 24 stops and the electromagnetic clutch 159 is stopped. Is turned off and the error lamp 185 is lit. Therefore, when two or more sheets 48 are discharged from the sheet feeding base 14, the electromagnetic clutch 159 is forced to be forced even before the value set as the time for the timer 189 to turn off the electromagnetic clutch 159 elapses. And the sheet feeding is stopped before the sheet 48 is pulled into the sheet folding device 18. Therefore, the sheet 48 can be pulled out easily.
[0025]
When the overlap feed is detected, the driving device 24 is stopped (S9), and the error lamp 185 is turned on (S10), the power switch is temporarily turned off (S11) (If the error lamp 185 is turned on, In either case, the system cannot be restarted unless the power is turned off.) Inspect (S12), turn on the power switch again (S13), check for the presence of paper (S14), and restart (S3).
[0026]
Further, while the driving device 24 is turned on, the photoelectric switch 129 continuously detects whether or not the driving device 24 is locked (S15). That is, when the cutouts 125 and 127 of the rotating disk 123 are not continuously detected for a predetermined time or longer by the photoelectric switch 129, it is determined that there is a lock. When the lock is detected, the driving of the driving device 24 is stopped (S9), and the error lamp 185 is lit (S10). Although not shown in FIG. 6, the limit switch 135 is kept while the power switch is turned on. The opening / closing of the back cover 133 is continuously detected by the above, and in the state where the back cover 133 is open, the start switch 181 is not turned on to activate (the error lamp 185 is lit). Further, when the back cover 133 is opened while the driving device 24 is operating, the driving device 24 is stopped and the error lamp 185 is lit.
[0027]
While the work is normally performed, whenever the discharge detection device 115 detects the discharge of the sheet 48 (sealing body 48a) (S17), the timer 189 is reset and the counting is restarted (S18). The clutch 159 is turned on (S5), and feeding of the next sheet 48 is started. Since the feeding of the next sheet is started after the discharge of the previous sheet 48 is detected, a plurality of sheets 48 are not jammed at different locations at the same time, and the recovery operation when a jam occurs is easy. Further, the waste of the sheet 48 can be reduced.
[0028]
When the stop switch 183 is pressed (S16), the discharge detection device 115 detects that the sheet 48 being processed has been sealed and discharged (S19), and the drive device 24 is stopped, and the timer 189 is stopped. Is stopped (S20). At this time, it is possible to restart only by turning on the start switch 181 (S3). Further, during the work, when the discharge of the next sheet 48 is not detected within a predetermined time after the discharge detection device 115 detects the discharge of the sheet 48 (that is, when the timer 189 exceeds a predetermined set value) ( In step S21, the driving device 24 is stopped (S22), the error lamp 185 is turned on, and the timer 189 is stopped (S23). This occurs when a jam occurs or when the sheet 48 is not discharged from the sheet feed table 14 (including the case where the sheet 48 is no longer on the sheet feed table 14). At this time, if there is no sheet 48 on the sheet feed table 14 and all the sheets 48 have been sealed, the power switch is turned off (S24, S25), and the sealing operation is completed (S26). If the cause is other than that, the power switch is temporarily turned off (S11) and inspected (S12). If a jam occurs, the nipped sheet 48 is taken out. When the inspection is completed, the power switch is turned on again. If there is no sheet 48 on the paper feed table 14, it is replenished (S14, S2) and restarted (S3). Even when the stop switch 183 is pressed, even when the discharge detection device 115 does not detect the discharge of the next sheet 48 within a predetermined time after the discharge of the previous sheet 48 is detected, a jam or the like is similarly performed. Since there is a possibility that it has occurred, the drive device 24 is stopped (S22) after the predetermined time has elapsed (S27).
[0029]
Although the above embodiment has been described with respect to the case where it is folded into three in the Z shape, the front folding line 179 (see FIG. 5) is set by reducing the position of the stopper 88 of the upper blade 62 and setting the guide space 86 short. 4) can be folded first and then folded inward (trifolded in three). Further, the paper folding device is not limited to the one that folds in three, and various types such as those that fold in two (for example, those that are folded in two to make a postcard size) and those that fold in four or more can be employed. A sealing device that seals by applying heat with pressure can also be used. Further, the present invention can be applied to a sealing machine that seals sheets of various materials such as synthetic resin in addition to paper sheets.
[Brief description of the drawings]
FIG. 1 is a diagram showing an embodiment of the present invention, and is a side view showing a configuration of a main part inside a sealing machine.
FIG. 2 is a plan view showing a drive mechanism of the sealing machine of FIG.
3 is a side view schematically showing a pressure adjustment mechanism between pressure rollers 107 and 109 of the sealing machine of FIG. 1. FIG.
FIG. 4 is a process diagram showing a procedure of sealing work by the sealing machine of FIG. 1;
5 is a block diagram showing a system configuration of a control system of the sealing machine of FIG. 1. FIG.
6 is a flowchart showing a control flow of sealing work by the control system of FIG. 5;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Sealing machine, 14 ... Paper feed stand, 16 ... Paper feed device, 18 ... Paper folding device, 20 ... Sealing device, 22 ... Storage part, 24 ... Drive device, 34 ... Sheet bundle, 42 ... Paper feed roller, 48 Sheet 48a Sealing element 51 Light emitting element 53 Light receiving element 54 Driving roller 56 First driven roller 58 Second driven roller 60 Third driven roller 62 Blade Plate (first guide member), 64 ... vane plate (second guide member), 86, 98 ... guide space, 88, 100 ... stopper, 92, 103 ... opening, 107, 109 ... pressure roller, 115 ... photoelectric switch (discharge detection device), 131 ... control device, 159 ... electromagnetic clutch (clutch), 177, 179 ... folding line.

Claims (13)

A sheet feeding table on which sheets that are sealed by folding at a predetermined folding line and sealed by applying pressure or pressure and heat are placed;
A paper feeding device that picks up and conveys the sheets one by one from the paper feeding table;
A paper folding device that receives the conveyed sheet, folds it along the fold line, and discharges the sheet to a lower position of the paper feed table;
A sealing machine comprising: a sealing device that is disposed below the sheet feed table and receives a folded sheet discharged from the paper folding device and seals the sheet by applying pressure or pressure and heat. The sealing machine according to claim 1, further comprising an accommodating portion that is disposed at a position below the sheet feeding table and accommodates a sealed sealing body that is discharged from the sealing device. The sealing machine according to claim 1 or 2, wherein the paper folding device and the sealing device are driven by using a driving device disposed at a position below the paper folding device. 4. The sealing machine according to claim 3, wherein the driving device drives the sealing device, and drives the paper folding device through the sealing device. The sealing machine according to claim 3 or 4, wherein the driving device intermittently drives the paper feeding device via a clutch. The relative position between the paper folding device and the sealing device is set so that the sealing device grips the leading end of the sheet before the paper folding device releases the rear end of the folded sheet. The sealing machine according to any one of 5. The sheet feeding device causes the sheet feeding roller to contact the surface of the uppermost sheet of the sheet bundle placed on the sheet feeding table, and drives the sheet feeding roller to remove the uppermost sheet. The sealing machine according to any one of claims 1 to 6, wherein the sealing machine is configured to convey toward a paper folding device. The paper folding device is
A driving roller disposed at a front position in the conveyance direction of a sheet conveyed by the sheet feeding device;
A first driven roller that is driven in contact with the upper surface side of the driving roller;
A second driven roller that is driven in contact with the back side as viewed from the sheet feeding device side of the driving roller;
A third driven roller driven in contact with the lower surface side of the drive roller;
A guide space is formed in which an opening is disposed at a position sandwiched between the driving roller and the first and second driven rollers, and a stopper is formed at an appropriate distance from the opening in the guide space. A first guide member for guiding the sheet so that the sheet can be taken in and out from the opening,
A guide space having an opening disposed at a position sandwiched between the drive roller and the second and third driven rollers is formed, and a stopper is formed at an appropriate distance from the opening of the guide space, A second guide member for guiding the sheet so that it can be taken in and out of the guide space from the opening,
The rotation axes of the drive roller and the first, second, and third driven rollers are set in parallel to each other and in a direction orthogonal to the conveyance direction of the sheet conveyed by the sheet feeding device,
The sheet conveyed by the sheet feeding device is sandwiched between the driving roller and the first driven roller and guided to the first guide member, and the leading end of the sheet is locked by the stopper of the first guide member. Then, the sheet is folded at a predetermined folding line, the sheet is sandwiched between the driving roller and the second driven roller with the folded portion as the head, and guided to the second guide member. The sheet is locked with a stopper of the second guide member, and the sheet is bent at another predetermined folding line, and the sheet is sandwiched between the driving roller and the third driven roller at the bent portion to be folded in three. The sealing machine according to any one of claims 1 to 7, wherein the sealing machine is configured to discharge to a sealing device below the paper feed table. The sealing device includes upper and lower pressure rollers disposed in front of a folded sheet discharged from the paper folding device, the rotation axes of the pressure rollers being parallel to each other and the paper The folded sheet discharged from the folding device is set in a direction orthogonal to the discharging direction of the folded sheet, and the folded sheet discharged from the paper folding device is sandwiched between the upper and lower pressure rollers to apply pressure or pressure and heat. In addition, the sealing machine according to any one of claims 1 to 8, wherein the sealing machine is configured to be sealed. The upper and lower pressure rollers are arranged offset from each other in the front-rear direction, and one pressure roller is arranged so as to be movable in a direction perpendicular to the rotation axis thereof. The sealing machine according to claim 9, wherein the pressing force between the upper and lower pressure rollers is adjusted by applying a pressing force in the moving direction. A light-emitting element and a light-receiving element disposed at a position facing each other with a sheet conveyed by the paper feeding device interposed between the paper feeding table and the paper folding device;
A control device for detecting the occurrence of a light receiving output of a predetermined value or less when the sheet passes based on the light receiving output of the light receiving element, and stopping driving of the paper feeding device, the paper folding device, and the sealing device The sealing machine according to any one of claims 1 to 10, further comprising: A discharge detection device for detecting discharge of the sealing body from an outlet of the sealing device;
A control device for stopping driving of the paper feeding device, the paper folding device, and the sealing device when the discharge of the sealing member is not detected within a predetermined period after the discharge detection device detects the discharge of the sealing member. The sealing machine according to claim 1, further comprising: A discharge detection device for detecting discharge of the sealing body from an outlet of the sealing device;
13. The apparatus according to claim 1, further comprising a control device configured to confirm that the discharge detection device has detected discharge of the sealing body and to drive the sheet feeding device to start conveyance of the next sheet. Crab sealing machine.

Images