JP4370380B2 - Number printing device - Google Patents

Description

  The present invention relates to a number printing apparatus.

  In banknotes (banknotes) and lotteries, a unique number is printed at a predetermined position on the paper. This number is printed by a sequence of a predetermined number of digits, or a combination of this sequence and symbols such as alphabets.

  The number printing is performed by a numbering device incorporated in a printing press. However, since the conventional numbering device is a method of feeding characters by a ratchet, the number cannot be converted except for a certain sequence.

  On the other hand, a type ring is fed by a pulse motor, and a character feed is controlled by controlling this motor (Patent Document 1), but this eliminates the need for a ratchet mechanism. Although it is possible to do so, it is necessary to equip a single number device with multiple motors, so the number device becomes larger, and the number of print digits is limited to about 6 digits because the size of the number device for printing is limited. In addition, in case of lottery tickets and banknotes with a narrow printing interval due to the large numbering device, the plate cylinder of the printing press must be increased. There is a problem of becoming.

  Also, when printing with a combination of symbols other than numbers, it may be necessary to set it by hand or replace the type ring depending on the symbol, but this may cause problems such as setting mistakes, and during maintenance such as ink cleaning. When the numbering device is removed from the printing press, there is a problem that it takes a lot of time to reproduce the printing position when re-installing.

  Therefore, the typeface of the numbering machine is set and the character feed is made using the rotation of the drive system of the printing machine, and the configuration around the printing wheel is made compact so that the numbering machine can be easily incorporated into the printing machine. A numbering device unit (Patent Document 2) has been proposed.

  Therefore, the numbering unit for printing described in the above-mentioned document 2 is provided with sector gears having a predetermined angle (80 ° to 110 °) concentrically on the numbering shaft that supports the numbering devices arranged concentrically. When the type wheel rotation gear is engaged with the sector gear, the character feed force is applied to the type ring.

  For this reason, every time the type wheel rotation gear meshes with the sector gear, an impact occurs, and other equipment parts are adversely affected. In addition, it is inevitable that the structure is complicated because an impact mitigation means must be provided.

  In addition, an electromagnet is used to lock and release the lock lever when the type ring is locked and the lock is released at the time of setting the type face, and is energized while the lock lever is in a stationary state, so it is provided for each type ring. The total power consumption of a large number of lock levers increases.

In addition, when it is necessary to replace the type ring due to wear of the type ring, it is necessary to remove the entire numbering unit including the type ring lock mechanism, and as a result, it takes a long time to readjust the printing position. There are many problems.
Utility Model Registration No. 2551799 JP-A-8-332719

  The present invention eliminates the impact at the time of character change as a structure that always rotates the ring shaft of the type ring, simplifies the structure accordingly, and does not require power for restraining and releasing the lock lever of the type ring It is intended to save energy, to make it possible to replace only the part of the type ring when it is necessary to reduce the cost, and to make it easier to identify the type ring and the type face. is there.

As a means for solving the above-mentioned problems, the present invention provides a required number of numbering devices attached to a numbering cylinder shaft in a radial direction. A friction ring interposed between the rings is inserted and inserted so as to rotate integrally with the type wheel shaft, and a type ring is identified and a type surface by a detection sensor provided on the type ring and a detection sensor disposed opposite to the peripheral surface of the type ring. After the identification, the type ring is constrained by the lock pole, and when the type face is selected, the number is set so that the type ring is released by releasing the restriction by the lock pole and causing the type ring to rotate together by friction with the friction ring. In printing,
An all-circumferential ring-shaped fixed gear is provided concentrically with the numberer cylinder shaft, and the numberer driving gear at the shaft end of the type wheel shaft is directly or indirectly provided over the entire circumference of the fixed gear. The type wheel shaft is configured to follow the rotation of the number drum cylinder shaft and to be rotated at all times based on the driving force for driving the number drum cylinder shaft, and is used for printing by changing the type surface of the type ring. When a surface is selected, printing is performed by restraining the type ring with the lock pole.

  A lock pole actuating solenoid for restraining the type ring is constructed with a permanent magnet inserted in a coil for actuating a plunger connected to the pole, and when the type ring is restrained, the coil is excited to protrude the plunger. When the type ring is restrained, the permanent magnet generates a magnetic field that causes a reaction against excitation, and the lock pole is engaged with the pawl gear of the type ring with a spring biasing force, and the permanent magnet attracting force when the coil is demagnetized. This is because the restraint release state is maintained.

  Further, the detected portion provided on the type ring is composed of a magnet insertion hole previously drilled between the type faces and a magnet embedded in the magnet insertion hole selected according to the detection pattern. In other words, the detection pattern corresponding to the typeface is configured.

  In addition, the frame of the numberer attached to the numberer cylinder shaft is composed of a lower frame fixed to the cylinder shaft and an upper frame joined to the upper part of the lower frame, and a number is provided between the side frames of the upper frame. The type ring shaft of the container is supported and the upper frame is detached from the lower frame to make the type ring removable.

  The friction ring interposed between the type rings is made of a material obtained by coating stainless steel with titanium nitride.

  According to the present invention, since the type wheel shaft circulates around the fixed gear as the sun gear fixedly concentrically with the numberer cylinder shaft, it is always rotated, so even when the type surface is selected, no machine is used. Therefore, it is not necessary to add a special means for reducing the impact, so that the configuration can be simplified and the operation can be stabilized without generating noise.

  In addition, rotation is applied to the type wheel shaft of the numberer through the friction ring in a state where it is always meshed with the fixed gear, so there is no need to provide a separate motor for rotating the type wheel shaft, and the peripheral structure can be obtained in a compact and inexpensive manner. it can.

  In addition, since the permanent magnet is incorporated into the solenoid for the operation of the lock pole that restrains the type ring, no electric power is required at the time of rotation of the type ring, and only a pulse signal is input at the time of operation. This can greatly contribute to power saving.

  Further, since the type of type ring and the typeface are identified by the arrangement of magnets constituting the detected portion provided on the type ring and the three magnetic sensors, various selection actions can be performed with a simple configuration. In addition, since the magnet can obtain a pattern configuration by selecting the portion to be embedded in the type ring according to the detection pattern, the structure of the type ring itself can be made uniform, which is advantageous in terms of cost. be able to.

  It is also possible to remove the upper frame from the lower frame without replacing the entire numbering unit when cleaning the numberer type ring or replacing it due to wear of the type ring. It can be performed very easily and accurately, and the work time of the above work can be greatly reduced.

  Moreover, it can be set as a friction ring with high abrasion resistance, expressing a predetermined frictional force.

  In the embodiment shown in the figure, as shown in FIG. 16, the number in the case where the serial number is simultaneously printed on the printed matter 2, 2... 1 shows a printing device.

FIG. 1 shows a side view of the numbering unit 3 for printing numbers on one row of printed materials 2 ₁ to ₂₅ as seen from the axial direction, and FIG. 2 shows a cross-sectional view thereof.

In the numbering unit 3, a mounting ring 5 is fixed to a numbering cylinder shaft 4 that is rotated by a printing drive source of a printing press, and five lines of printed products 2 ₁ to ₂₅ are formed on the outer peripheral surface of the mounting ring 5. corresponding five numbering box _{6 through 65} is attached. In the following description, one numbering device (generally referred to as 6) and its associated mechanism will be described as a representative example.

  A ring-shaped fixed gear 7 having a function as a sun gear, which is one of the characteristic configurations of the present invention, faces one side of the numberer 6 and the mounting ring 5 and is concentric with the numberer cylinder shaft 4. It is fixed on the printer side.

  As shown in FIG. 2, the mounting ring 5 fixed to the numbering device barrel shaft 4 is provided with a projecting portion 9 forming a dovetail groove 8 at the end of the outer peripheral surface on the fixed gear 7 side, At the end, a fastening plate 10 is formed on the side of the mounting ring 5 with a bolt 11 so as to face the dovetail groove 8. The frame of the numbering device 6 is sandwiched.

  The frame of the numbering device 6 has the characteristic structure of the present invention. As shown in detail in FIGS. 3 and 7, the lower frame 12 fixed to the mounting ring 5 and the upper and lower ends of the lower frame 12 are attached and detached. The upper frame 13 is attached to the upper frame 13, and the required number (12 in the illustrated example) of the type rings 14, 14,... Is assigned to the upper frame 13, and the operation control unit 15 is assigned to the lower frame 12. It is assembled.

  The details of the lower frame 12 have an upward U-shape when viewed from the front, and the lower bottom 12a is a concave curved surface that can be in close contact with the arc surface of the outer peripheral surface of the mounting ring 5 as shown in FIG. In addition, ant ridges 16 and 16 are formed at both side ends to engage with the dovetail groove 8 of the attachment ring 5 and the dovetail groove by the fastening plate 10 so as not to fall off.

  Accordingly, the lower frame 12 is aligned with the outer peripheral surface of the mounting ring 5 so that one dovetail 16 is fitted in the dovetail groove 8 of the protruding portion 9 and the fastening plate 10 is engaged with the other dovetail 16 so that the fastening is performed. The lower frame 12 is firmly fixed to the mounting ring 5 by fastening the plate 10 to the mounting ring 5 with bolts 11.

  The upper frame 13 has a rectangular frame shape in plan view, and the left and right mounting seats 17 and 17 and the upper ends of both side frames 12b and 12b of the lower frame 12 are detachably attached by screws 18 and 18. It has become.

  The type ring 14 grouped between the side frames 13a and 13a of the upper frame 13 is shown in FIG. 4 between the side frames 13a and 13a of the upper frame 13 as shown in a sectional view partially omitted for convenience of explanation. The type wheel shaft 20 is rotatably supported, and the type wheels 14, 14... Are rotatably inserted into the type wheel shaft 20.

  As shown in FIG. 6, a claw gear 19 having claw teeth 19a, 19a ... corresponding to the typefaces 14a, 14a ... of the peripheral surface of the type wheel 14 is integrally provided on one side surface of the type rings 14, 14 ... It has been. A friction ring 21 is concentrically interposed between the other side surface of the type ring 14 and the adjacent type ring 14, and the friction ring 21 rotates integrally with the type ring shaft 20 by a key 22 and slides in the axial direction. It is possible to move.

  The type ring 14 is pressed against the fixed ring 23 against the type ring shaft 20 with a predetermined pressing force against the type ring shaft 20 at one end position of the type ring group 14, and the required friction between the friction ring 21 and the type ring 14 is obtained. A preload spring 24 is provided for generating a force.

  The preload spring 24 includes a preload adjusting ring 26 that is inserted into the type wheel shaft 20 by a position adjusting set screw 25 so that the fixed position is variable, and a preload ring 27 that is inserted into the type wheel shaft 20 so as to be movable in the axial direction. The type ring 14 group is configured to be pressed against the fixing ring 23 through the preload ring 27.

  As shown in FIGS. 2 and 3B, a numbering device driving gear 28 is fixed to the end portion of the type wheel shaft 20 on the fixed gear 7 side, and is supported by the gear 28 on the frame of the numbering device 6. A drive gear 30 coaxial with the intermediate gear 29 is meshed with the fixed gear 7 and circulates around the fixed gear 7 as a planetary gear.

  The friction ring 21 is made of stainless steel coated with titanium nitride in order to improve wear resistance.

  In FIG. 1, reference numeral 31 denotes a pressure drum for feeding the printing paper 1, and 32 denotes a filling roller for supplying ink to the type surface 14 a used for printing of the type ring 14.

  Next, the operation control unit 15 for controlling the amount of rotation of the type rings 14, 14,... Of the numbering unit 6 to position the type surface 14a of the character to be printed at the printing position and restraining it at that position, and the related relations. The components will be described.

  The operation control unit 15 is incorporated in the lower frame 12 of the numberer 6 and is supported between the side frames 12b and 12b of the lower frame 12 as shown in FIGS. A lock pole 34 is supported on the shaft 33 so as to be rotatable in correspondence with the type rings 14, 14.

The lock pole 34 has first, second, and third three arms 34 ₁ , 34 ₂ , and 34 ₃ so as to form a substantially Y shape when viewed from the front with the shaft 33 as a center. the 34 ₁ of tip locking claw 35 for restraining the rotation of the print wheel 14 is provided to engage in one of the pawl teeth 19a of the pawl gear 19 of the side surface of the character ring 14.

Each arm ₃₄ 1 of the locking pawl _34, 34 2, 34 each of the _third solenoid _{SD 1,} with the plunger 36,36,36 of SD 2, SD ₃ are connected, the first spring to the arm 34 ₁ In FIG. 8 and FIG. 9, the rotation pawl 37 is acted counterclockwise (the direction in which the locking claw 35 engages with the claw gear 19).

  In the illustrated example, a coiled spring 37 is housed in the spring bracket 38, and the elastic force of the spring 37 can be adjusted by an adjusting screw 39 screwed into the rear portion of the spring bracket 38.

The solenoids SD _{1 to} SD ₃ are placed at “A position”, “B position”, and “C position” as shown in FIG. In this case, the positions of the lock poles 34, 34... Are different from each other so as not to cause mutual interference with the adjacent solenoid for the typographic ring even when the installation interval of the lock poles 34, 34.

The solenoids SD _{1 to} SD ₃ have the characteristic configuration of the present invention, and a permanent magnet 41 is arranged in the coil 40 and does not require electric power when the plunger 36 is attracted and held. It is configured that it is only necessary to send a signal in a pulse form only at the time of release, and no electric power is required while the lock pole 34 is restrained, thereby saving power.

  The restraint release of the type ring 14 by the lock pole 34 is performed by mechanical means.

That is, one end of the release lever 43 is fixed to the end of the release shaft 42 that is supported between the side frames 12b, 12b of the lower frame 12 of the numbering device 6, and the spring holder 44 is fixed to the release shaft 42. The spring holder 44 is provided with leaf springs 45, 45... Corresponding to the lock poles 34, 34. And this leaf spring 45 pushes the second arm 34 ₂ of the front end of the lock pawl 34 when the release lever 43 is rotated counterclockwise in FIG. 8 to the left, whereby the first arm 34 ₁ of the locking claw 35 is removed from the claw teeth of the claw gear 19 of the type ring 14 (see FIG. 9).

  The rotation means of the release lever 43 is such that a roller 46 pivotally attached to the other end of the release lever 43 is fitted into a cam groove 47 formed concentrically with the gear on the side surface of the fixed gear 7, When the roller 46 enters the deformed portion 47a in which a part of the cam groove 47 is deformed into a concave shape in the diameter increasing direction, the release lever 43 rotates together with the shaft 42 in the counterclockwise direction in FIG. The locking claw 35 of the lock pole 34 escapes from the claw gear 19 so that the type ring 14 is unlocked.

  As shown in FIG. 3B, a slit plate 48 is fixed to the opposite end of the release shaft 42, and this slit plate 48 is related to a release detection sensor 49 fixed to the lower frame 12, and the release lever 43. It is detected that the type ring 14 has been unconstrained and the type ring 14, 14,... Has started to rotate.

  Next, setting means for the typeface 14a of the type ring 14 will be described.

  Magnet insertion holes 50, 50... Are formed in recesses between all the typefaces 14 a, 14 a... Of the type ring 14 (shown in FIG. 6), It is possible to insert rod-shaped magnets 51, 51... Into the magnet insertion holes 50, 50.

  A sensor substrate 52 is disposed along the outer periphery of the type ring 14 as shown in FIGS. 8 and 9, and three magnetic sensors are provided on the surface of the sensor substrate 52 facing the type surfaces 14a, 14a. S, S, S are provided. The magnetic sensors S, S, S are arranged at intervals that can be directly opposed to the three magnets 51, 51, 51 adjacent to the type ring 14.

  The arrangement of the magnets 51 can be provided by selecting a predetermined combination according to the magnetic detection pattern by the magnetic sensors S, S, S, and the magnets 51, 51. By inserting into the insertion holes 50, 50..., It is possible to immediately adapt to the pattern, thereby constituting the detected portion.

  FIG. 10 exemplifies the detection pattern, and shows the relationship between the typeface 14a of the typeface 14 and the relation between the typeset 14 and the magnetic sensors S, S, S based on the pattern. 14. 10A to 10D, black circles indicate magnetic poles N, white circles indicate magnetic poles S, and blanks indicate no magnets. 10 (A) corresponds to FIG. 11, FIG. 10 (B) corresponds to FIG. 12, FIG. 10 (C) corresponds to FIG. 13, and FIG. 10 (D) corresponds to FIG.

  That is, as shown in FIG. 11, when the magnetic sensors S, S, S simultaneously detect “N”, “N”, and “N”, the typeface 14a used for printing is the letter “O”. Similarly, when “empty”, “N”, and “N” are detected, the typeface 14a is a character “1”. Similarly to FIGS. 12 to 14, the typeface 14 a of the character to be used for printing can be selected.

  FIG. 15 shows an example of a system block diagram, and the operation thereof will be described together with the description of the following actions.

When the printing press 55 is driven to rotate, the numbering box 6 _{through 65} disposed on the mounting ring 5 rotates integrally with the numbering-cylinder shaft 4. At this time, since the gear 30 meshed with the fixed gear 7 is rotated, the type wheel shaft 20 is rotated through the intermediate gear 29 and the gear 28, and each type ring 14,. 14 ... rotate together.

  The MPU 53 identifies the character on the typeface 14 by detecting the magnet 51 of the detected portion through each magnetic sensor S, S, S arranged facing each type ring 14, 14,. A pulse-like signal is given to the corresponding solenoid of the lock pole 34 of the type ring 14.

  Since the solenoid (generally referred to as SD) has a built-in permanent magnet 41, it is normally attracted in a state in which the restraint by the lock pole 34 on the type ring 14 is released. When a signal is given to the solenoid SD, a magnetic field is generated in a direction that counteracts the magnetic force of the permanent magnet 41, so that the lock pole 34 engages with the claw gear 19 of the type ring 14 by the action of the spring 37, and the type ring 14 is restrained, and the typeface 14a used for printing is held in an immobile state.

  The type wheel shaft 20 and the friction ring 21 continue to rotate, but the constrained type ring 14 slips because it is fixed. In this way, the MPU 53 performs a series of controls for all the digits.

External controller 54 to MPU53 of each numbering box 6 _{through 65} before number unit 6 passes the inking point of inking roller 32 "or chosen typeface should all the digits are set" Confirm communication. If there is a selection mistake at this time, the external controller 54 issues a stop command to the printing press 55.

  The numbering device 6 performs printing on the paper 1 at the printing point after ink is set. Further, the external controller 54 communicates “typeface data to be next” to the MPU 53 before the printing operation.

  Thereafter, when the release lever 43 reaches the deformed portion 47a of the cam groove 47, the roller 46 of the release lever 43 enters the deformed portion 47a, so that the release lever 43 rotates about the shaft 42 to the position shown in FIG. The lock poles 34, 34... Are simultaneously rotated by the leaf spring 45, so that the locking claw 35 is disengaged from the claw gear 19 of the type wheel 14 and the restrained state is released.

  At this time, since the plunger 36 connected to the lock pole 34 is pushed up by the leaf spring 45 to the position where it is attracted and held by the permanent magnet 41 by the action of the permanent magnet 41, the lock is maintained even if the release lever 43 returns to the original position. The pole 34 is maintained in a state where the restraint of the type ring 14 is released.

  The type wheel 14 released from the restriction by the lock pole 34 is rotated again together with the rotation of the type wheel shaft 20 by the frictional action of the friction ring 21.

  Since the slit plate 48 is rotated by the rotation of the release shaft 42, the release detection sensor 49 detects this, and the slit detection signal from the sensor 49 informs the MPU 53 that the type rings 14, 14,. , It is possible to shift to the next type face selection operation.

  A predetermined number is printed on the paper 1 on the impression cylinder 31 by the typefaces 14a of the typefaces 14, 14,.

The side view seen from the axial direction which shows an example of the numbering unit in the number printing apparatus by this invention. FIG. FIG. 2A is a side view of the numberer in FIG. 1 taken out from the lower frame, and FIG. 2B is a side view of the numberer connected to the lower frame. Sectional drawing which simplifies and shows the structure of a number device. The front view of a friction ring. AA arrow sectional drawing of FIG. The frame structure of a number machine is shown, (A) is an upper frame, (B) is each side view which shows the state couple | bonded with the upper frame. Operation explanatory drawing which shows the state at the time of type ring restraint of the operation control part of a type ring. Operation | movement explanatory drawing which shows the state at the time of restraint cancellation | release of a type ring similarly. (A)-(D) is explanatory drawing which shows the example of a detection pattern of the to-be-detected part provided in a type ring. Explanatory drawing of the type ring corresponding to FIG. 10 (A). Explanatory drawing of the type ring corresponding to FIG. 10 (B). Explanatory drawing of the type ring corresponding to FIG.10 (C). Explanatory drawing of the type ring corresponding to FIG.10 (D). System block diagram. FIG. 3 is a schematic plan view illustrating an example of printing on paper.

Explanation of symbols

1 sheet 2 product 3 ID unit 4 numbering-cylinder shaft 5 mounting ring ₆ (6 _{through 65)} numbering box 7 the lower frame 13 the fixed gear 10 fastening plate 12 numbering box, the upper frame 14 character ring 15 actuation control Part 19 Claw gear 20 Type wheel shaft 21 Friction ring 24 Preload spring 28 Number machine drive gear 31 Pressure drum 34 Lock pole 36 Plunger 40 Coil 41 Permanent magnet 43 Release lever 47 Cam groove 50 Magnet insertion hole 51 Magnet SD (SD _{1 to} SD ₃ ) Solenoid S Magnetic sensor

Claims (3)

A required number of numbering devices are mounted in a radial direction on the numbering unit shaft, and a plurality of typed rings are rotatably mounted on the typed ring shaft of this numbering unit, and a friction ring interposed between the typed rings is formed on the typed ring shaft. The type ring is identified and the type surface is identified by the part to be detected inserted on the type ring and the detection sensor placed opposite to the peripheral surface of the type ring. In the number printing, which is designed to constrain the ring and release the constraint by the lock pole at the time of selection of the type face, and to rotate the type ring by the friction by the friction ring and to feed the letter,
An all-circumferential ring-shaped fixed gear is provided concentrically with the numberer cylinder shaft, and the numberer driving gear at the shaft end of the type wheel shaft is directly or indirectly provided over the entire circumference of the fixed gear. A typeface that is meshed so that it can be meshed to follow the rotation of the numberer cylinder shaft and that the type wheel axis always rotates based on the driving force that drives the numberer cylinder axis, and is used for printing by changing the typeface of the type ring When is selected, the print ring is restrained and printed by the lock pole ,
A frame of a numberer attached to the numberer cylinder shaft is composed of a lower frame fixed to the numberer cylinder shaft and an upper frame joined to the upper part of the lower frame, and the numberer is located between the side frames of the upper frame. The type ring shaft is supported and the type ring can be removed by detaching the upper frame from the lower frame.
Each type ring of the plurality of type rings has a plurality of magnet mounting holes that are drilled and arranged in the type surface, and each magnet mounting hole has an N-pole magnet embedded on the outside. The outer side is in the form of either the S magnetic pole embedded or nothing embedded,
The detection sensor can detect the detection pattern corresponding to the typeface of the type ring by detecting the aspect of the three adjacent magnet mounting holes,
Each type ring of the plurality of type rings has three adjacent magnet mounting holes in which either the outer side is embedded with an N magnetic pole magnet or the outer side is embedded with an S magnetic pole magnet. number printing apparatus of the printing press and wherein the <br/> have a pair.   The solenoid for the operation of the lock pole for restraining the type ring has a permanent magnet inserted in a coil for actuating the plunger connected to the pole, and when the type ring is restrained, the coil is excited to project the plunger. When the magnet is demagnetized, the permanent magnet generates a magnetic field that produces a reaction against excitation and engages the lock pole with the claw gear of the type ring with a spring biasing force. 2. The number printing apparatus for a printing press according to claim 1, wherein the number printing apparatus is adapted to maintain the state.   The number printing apparatus for a printing press according to any one of claims 1 to 2, wherein the friction ring interposed between the type rings is made of a material obtained by coating stainless steel with titanium nitride.

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