JPS62246734A - Printer - Google Patents

Abstract

PURPOSE:To facilitate the replacement with other accommodation chamber without making a printer large-scaled, by providing an accommodation chamber for accepting a plurality of type wheels each having types mounted on the periphery thereof in a ring shape to an accepting stand in a state accessible in the axial direction of a platen. CONSTITUTION:A carrier 3 movable to the axis direction of a platen 2 is provided on a machine stand 1 and an accommodation chamber 19 having a plurality of type wheels 12 movable to a direction crossing the carrier 3 at a right angle received therein is mounted on the carrier 3 through a receiving stand 45. One type wheel among a plurality of the ones in the accommodation chamber 19 is upwardly moved by a rising and falling mechanism and, after the rotary shaft of said wheel is engaged with the wheel by a slide mechanism, an arbitrary type is subjected to printing by a hammer 175. Herein, the chamber 19 is provided in a state accessible in the axis direction of the platen so that the chamber having the used type wheel housed therein can be easily pulled out to the axis direction of the platen from an accepting stand.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention automatically mounts one of a plurality of type wheels each having an annular type portion around its periphery to a carrier at a position suitable for printing as required. to be able to
This invention relates to a printer that can be used to obtain printed materials with different fonts, numbers, character types, etc.

2. Description of the Related Art Generally, in typewriters, impact type printers using type elements having the same type of type are often used because of their good printing quality and the ability to simultaneously obtain carbon copies. However, impact printers using such types have limitations in printing a variety of mixed characters.

Therefore, in the past, many proposals have been made to make it possible to print mixed characters with respect to impact printers.
U, S, P4,026, 4'03 (preliminary document 1) arranges the type wheels in a donut shape and places them on the side of the printer case, and when replacing the type wheels, moves the carrier to the side of the case. Type wheels are being replaced at that location. Also, U, S, P4゜281.938
In (Preliminary Document 2), when changing the carrier, the carrier is moved a certain distance t on the rotary table, and the type wheel is replaced there.

Furthermore, U, S, P4,357,115 (preceding document 3)
In this method, a plurality of semicircular type plates are provided on the same axis, and only the necessary type plates are rotated to face a hammer and the type is struck to perform printing.

Furthermore, in Japanese Unexamined Patent Publication No. 58-39464 (preliminary document 4), a magazine accommodates a plurality of type plates having a comb tooth shape with their free ends connected and each comb tooth having a type. , which is installed in the carrier. Inside the carrier, the magazine is moved back and forth to move the desired type plate upward, and the carrier is also moved left and right, and the amount of upward movement of the type plate is adjusted so that the desired type faces the hammer. Impact printing is performed with a hammer.

Problems to be Solved by the Invention Although each of the prior art techniques described above has been improved in terms of being able to print a wide variety of mixed characters, it has been disadvantageous in terms of total printing speed. For example, the total printing speed when printing mixed characters for -line was insufficient. That is, in Prior Documents 1 and 2, the carrier must be moved to the end position each time the type wheel is replaced, resulting in a lot of wasted movement and the total printing speed becomes slow. Furthermore, the number of printed characters that can be held in the preceding document 3 is greatly reduced, and as a result, the number of times the printing plate needs to be replaced increases, and the total printing speed becomes slower. Further, in the preceding document 4, since a magazine containing a plurality of type plates is mounted on the carrier, it is possible to eliminate unnecessary movement of the carrier when replacing the type plates.

However, since the type plate is roughly comb-shaped,
In order to move to the desired type position, you must not only move the carrier in the feeding direction.

Sometimes it is necessary to move in the opposite direction as well.

In this way, if the heavy carrier has to move back and forth to print -line mixed characters, this becomes a waste of movement, and the speed of the carrier itself cannot be increased, so the printing speed is significantly reduced. Become slow.

Also, even if the total printing speed is improved when printing mixed characters, problems arise when a type wheel outside the printer is required.

That is, the problems are speeding up the printing of mixed characters in impact printers and making it easier to replace the type wheels inside and outside the printer.

Means for Solving the Problem: With respect to the platen provided on the machine base, on the carrier mounted on the machine base so as to move in the direction of its axis, through the cradle, move the carrier in the direction intersecting with the movement of the carrier. A storage case containing a plurality of type wheels is mounted so that the type wheels can be moved up to n, and one type wheel among the plurality of type wheels in the storage case is moved up to a position n suitable for printing, thereby producing mixed characters. In addition to improving the total printing speed when printing, the printer also moves the carrier from the cradle on the printer carrier in the axial direction of the platen in each housing case, making use of the space available to increase the size of the printer. The platen is disengaged from the cradle and pulled out from the cradle in the axial direction of the platen.

Embodiment To describe this in detail with reference to the embodiment shown in the figure, 1 is a machine base, 2 is a known platen rotatably mounted on the machine base l, and 3
is a carrier, and this carrier is suspended on the machine base via rails 4, support rods 5, etc. so as to be able to slide in the left-right direction in FIG. Reference numeral 6 denotes a pulse motor for driving the carrier, which is installed at a suitable location on the machine 1 (substantially in the center on the front side in Fig. The transmission gear group 7 is connected to the carrier 3 via pulleys 8, 9, 10, string 11, etc., and the rotation of the pulse motor moves the carrier 3 relative to the machine 1 as shown in Fig. 1. It is designed so that it can be moved left and right. 12 (12°...-12n
) is a type wheel with a type part provided on one side of the tip of a radially formed free piece, and at a position approximately 180" apart, a pair of type wheels each having a notch 13 and 13' in the tip. In addition to the arm rods 14 and 14' being provided from the boss portion 15, there is a mounting hole 16 in the center of the boss portion 15, and a mounting hole 16 is located off to one side (to the left in Fig. 2) from the mounting hole 16. A parking hole 17 is provided at each position of the boss portion 15, and a pair of locking pins 18 are provided at a position parallel to the arm rods 14, 14' on one side of the boss portion 15. .18' are protruded from each other, and each type wheel 12 (1,
2.

...127) Each type is provided with a type part with a different font, size, etc. 19 is a housing housing for the type wheel made of material of a polymer compound, and this housing housing Mainly, as shown in Figure 4, Deshi Works Area, and Figure 23, there is a housing 20 with openings at the top and bottom, respectively;
The casing 20 is formed at predetermined intervals in a substantially V-shape that also serves as a partition, and is formed approximately in the center to support the boss portion 15 of the type wheel. A large number of support plates 23 (23,...23) provided with notches 22
．． 1) is a front side plate 2 whose upper part is formed in a substantially semicircular arc shape.
4 toward the front side plate 25, the left and right side plates 26.26'
These support plates 23 (2
3,...23. ), the boss portions 15 are supported on the type wheels 12 (12,...12.), and the respective pins 18, l8' are supported on the support plates 23 (23,...23.).゜) from above.

Each of the type wheels 12 (12, .
2, .
and an integral long groove 27, 27' for engagement, which is open at one end (on the left in the figure) at a slightly lower part (frontward in the 20th construction section) of the approximately central part of the front side plate 25, respectively. It is officially established. Further, the front side plate 24 is provided with a through hole 28 at an upper position across the long groove 27, and a pair of through holes 29 and 29' at a lower position. Through the through holes 28 and 29.29', one end of each of the free pieces 30 and 31° 31', which are formed in an approximately ] shape, is directed toward the front (toward the front in the figure) from the front side plate 24. In addition to being provided so as to protrude from the holes 28 and 29, 29', respectively, the upper end edges of the left and right side plates 26, 26' of the housing 20 are provided.

Each has a mouth-like cross section and an engaging protrusion 32 on the inside thereof.
．． An engagement I11 with 32'!33,33' is provided respectively. Furthermore, a pair of cam surfaces 34 and 34' are provided on one end of each of the outer parts forming the engagement grooves 33 and 33' (on the front end in the 20th section). , a pair of free ends 36 and 36' formed by the notches 35 and 35' on the other end edges thereof are provided with recesses 37 and 37' for parking, respectively. has been done. Further, a pair of guide notches 38 and 38' are formed in the front side plate 24 and the front side plate 25 at positions slightly above the positions facing the pair of engagement grooves 33 and 33', respectively. ing. still.

A pair of heirs 39 and 39' for operation are respectively protruded outward (rightward in the 20th construction section) from the lower part of the right side plate 26. Mainly, as shown in FIG. 23, the front side plate 24 and the front side plate 2 of the housing 20 are
It is formed into a substantially semicircular arc shape sufficient to cover the upper side of 5, and the front side and front part of the base on the left and right sides thereof are formed in a shape that protrudes slightly toward the front and the front, respectively.

An integral groove 40, 40' that engages with the protrusion 32, 32' of the engagement groove 33, 33' of the housing 20 is bored inside each of these inlets. groove 40
．． At a position slightly above 40', there are provided type wheels 12 (12, . . . 12.) for preventing the movement of the type wheels 12 (12, . A pair of jump stops 41 and 41' are respectively provided in a protruding manner.

Further, on the near side edge slightly above the base, there is a pair of inclined parts 42, 42 formed toward the front from the near side of the base.
A pair of notches 43 and 43' for engagement connected to the casing 20 are respectively bored in the front part of the base, and the notches 43 and 43' for engaging with the notches 37 and 37' of the housing 20 are respectively formed outwardly in the front part of the base. A pair of bins 44 and 44' for parking the lid member 21 are provided in a protruding manner. As mentioned above, the type wheel 12 (12
,...12. ), turn the lid member 21 from the front in the 20th construction section and insert its grooves 40, 40' into the protrusions 32, 32' of the engagement grooves 33, 33' of the housing 20, and , the second flap 41.41' of the lid 21 is connected to the notch 3 of the housing 20.
8. Through 38', type wheel armrest 14.14
The lid member 21 is attached to the housing 20 by engaging the bins 44 and 44' with the notches 13 and 13' of the housing 20, respectively, and moving the bottles 44 and 44' into the notches 37 and 37' of the housing 20, respectively. As a result, the type wheel 12 (12, . . . 12n) can be accommodated in the type wheel housing casing 19 without any movement. Reference numeral 45 designates a pedestal for the housing 19 for the type wheel, and this pedestal is mainly open at the top and one side (the right side in the same figure) as shown in the seventh figure, and a part of the bottom plate 46 ( left side in the same figure)
It is formed into a box shape with a concave portion 47 with a raised bottom, and one end of both side plates 48, 48' (the left end in the figure) has a pair of holes provided on the outside of each side plate 48, 48'. In addition to protecting the mounting hole 51.51' of the boss 49.49' which communicates with the boss hole 50.50', the lower edge of one end (lower edge of the left end in the figure) There is a latch 52 for driving.
At the other end of the bottom plate 46 (the right end in the figure), a notch 53 and an engaging tongue portion 54 are provided, respectively. Also, said both side plates 48.48
Engagement protrusions 55' and 55 that engage with the long grooves 27 and 27' of the housing 20 are protruded on the inside of the housing 20, respectively. A hole 56 for engagement is bored. Further, on the outside near one end of the side plate (the front side near the right end in the figure), a protruding piece 58 with a mounting hole 57 is provided to protrude outward (forward in the figure). The projecting piece 58 is made of a material such as a polymer compound, and has a claw part 59 at one end that engages with the hole 56 of the side plate 48, and a heir 6 for operation at the other end.
0, and a free retaining portion 63 formed by a notch 61 on one side and having a retaining protrusion 62 at one end.
a hole 65 in which a parking pawl rod 64 with a locking rod 64 is bored; and a pin 66 inserted into the attachment hole 57 of the protrusion 58.

Due to the elasticity of engagement between the protrusion 62 and the side plate 48, the claw fRI59 is always inserted through the hole 56 and protrudes from the inside of the side plate 48. Incidentally, reference numeral 67 denotes an actuating piece for actuating sensor A, which will be described in detail later, which is provided protrudingly provided on the outside near one end of the side plate 48 on the other side. Then,
The pedestal 45 configured in this way is viewed from one side (mainly the front side in the 24th country) where the carrier 3 is opened, one side edge of the seven through holes 69 provided in the bottom 68 of the carrier 3. Part 70
The tongue portion 54 is engaged with the bottom plate 68 from below, and the boss hole 50.50' of the pedestal 45 and the side plate 48.
48' holes 51 and 51' are respectively engaged with guide rods 71 provided by fixing them to the carrier, and guided by these engagements, the guide rods 71 are placed on the bottom part 68 of the carrier 3 in the longitudinal direction. It is mounted so that it can slide.

Reference numeral 72 designates a pulse motor for moving the pedestal 45. This pulse motor is provided on one side plate 73 of the carrier, and its rotating shaft 74 and the rack 52 of the pedestal 45 are connected to a gear group 74. are related through.

Due to the rotation, the pedestal 45 is moved to the carrier 3 as described above.
It can be slid on top. Therefore, as described above, the type wheel 12 (12+
・Accommodation case 19 for the type wheel equipped with the bow 211)
The length of the housing 20 @ 27.27' is the protrusion 55' of the pedestal 45.
.

55 while the free pieces 30 and 31.3 of the housing 20 are engaged with each other.
1' is elastically engaged with the inside of the side plate 48' of the pedestal 45, and inserted until the left side plate 26 is engaged with the stepped inner surface 75 of the bottom plate 46, and then the hole 56 of the parking pawl 64 is inserted. By elastically engaging the inserted pawls 59 with seven parking holes 76 provided in the housing 20 and mounting the type wheel accommodation housing 19 on the pedestal 45, the pulse motor 72 can be operated as described above.
By the rotation of the type wheel 12 (12, . . . 12,
) can be moved with respect to the carrier 3 together with its accommodation case 19 and pedestal 45. still,
As shown in FIG. 5, when the eldest child 6o of the parking wind 64 is pushed, the claw portion 59 is disengaged from the parking hole 76 of the storage case 19 through the elasticity of the protrusion 62, and this storage case 19 You can pull it out to the right (in front of the fifth country move) by using the carrier's movement space. 77 and 77' are a pair of engaging bodies, and these engaging bodies are mainly formed in a substantially V shape as shown in the 24th country and the 20th construction area, and each of the engaging bodies has a There are holes 78 and 78' for mounting. Further, the other end portions of each are bent inwardly by approximately 90 inches to form engaging protrusions 79 and 79', respectively.

A pin 80, 80' that engages the cam surfaces 34', 34 of the housing 20 inwardly is located slightly below the protrusion 79, 79' (on the near side in the 20th construction section). In addition to protruding from each of the pins 80 and 80', a rocking position regulating pin is formed by bending the pins 8o and 80' in the opposite direction and further bending them by 90'. Protrusions 81 and 81' are provided in a protruding manner, respectively, and these protrusions 81 and 81' are placed in elongated holes 82' and 82 formed in seven side plates 73' and 73 of the carrier 3, respectively.

In a state where it is positioned so that it can be moved freely,
The engaging body 77.77' is connected to the hole 78.78' and the shaft 83,
．． 83' is mounted on the inside of the side plates 73' and 73 so as to be able to swing freely. Reference numerals 84 and 84' refer to jump stops formed in a substantially "" shape, and these jump stops are opposed to the jump stops 41 and 41' of the lid member 21 inside the side plates 73 and 73' of the carrier 3, respectively. Screws 85 and 85' are respectively protruded at the positions. 86 is the type wheel 12 (1
21...12n) as a rotation axis for rotation.

This rotary wheel 86 is located at the upper part of the middle between the side plates 7373 of the carrier 3 (the front part of the center in the left, right, right direction in the apprenticeship area) and in front of the center of the carrier 3 in the front and back direction. The ear portion 87 of the mounting bracket 87 is located at an offset position (a position offset to the left from the center in the left-right direction in FIG. 5). ．． 87
．． through the axial direction (left and right direction in Figure 5)
A transmission gear 88 is integrally fixed to one end of the carrier 3 so as to be able to slide on the carrier 3, and a transmission gear 88 is integrally fixed to one end of the carrier 3. In addition to being integrally provided with a stopper 90 having a protrusion 89 on one side (on the right side in FIG. 5) that engages with the stopper hole 17 of the wheel 12 (12, . . . -12n), Approximately in the center thereof, a pair of engaging collars 91 are provided with a slight distance between them. ．． 9
1. are provided respectively, and one of the tsuba 91. A compression spring 92 is provided between the mounting bracket 87 and one ear portion 871 of the mounting fitting 87. Due to the tension of the compression spring 92, the rotation shaft 86 is always urged to slide in one direction (toward the right in FIG. 5). Therefore, the rotation shaft 86 due to the bias of the compression spring 92
Sliding is prevented by the other collar 91□ coming into contact with the ear portion 87□. 93 was provided in the carrier 3 in the previous cycle, and was provided at one end of the rotating shaft 94 (the right end in FIG. 5).
(95 is made to always mesh with the transmission gear 88 of the rotation shaft 86, so that the rotation of the pulse motor 93 causes the rotation shaft 86 to rotate via the gear 95 and the transmission gear 88. Further, an actuating piece 96 for actuating the sensor 8, which will be described in detail later, is integrally provided at the other end (left end in FIG. 5) of the rotating shaft 94 of the pulse motor 93. Reference numeral 97 designates a bearing for the rotating shaft 86, and this bearing 97 is attached to one end of the rotating shaft 86 (right end in FIG. 5) when the rotating shaft 86 is slid to the right in FIG. A mounting plate 98 is provided between the side plates 73 and 73' of the carrier 3 so as to be able to rotatably support the rotating shaft 86. The wheel 12 (12, . . . 1211) is a pulse motor that also serves to move the wheels up and down, and this pulse motor 99 is connected to the carrier 3.
A gear 101 is fixed to a rotating wheel lOO that is provided at the front of the left end of the side plate 73 in FIG. There is. 102 is a rotating body, and a cam surface 103 is provided on the outer circumference of the rotating body 102 in the axial direction from one side to the other side.
104, a gear 105, and engagement teeth 106 are integrally provided in that order, and seven grooved cams 108 are provided on one end surface 107 of the cam. And this rotating body 1
02 is a shaft 1 which is protruded along with the seat 110 with its mounting hole 109 directed toward the front in the side plate 73'.
11 in the figure, the gear 105 is inserted so that it can be freely rotated once by being inserted through it from the front.
and the gear lot of the rotating shaft 100 are meshed with each other through a transmission gear group 112 mounted on the side plate 73', and the rotating body 102 is rotated by the operation of the pulse motor 99. There is.

Reference numeral 113 designates a first crank, and this first crank is mainly connected to the shaft 1 on the mounting bracket 87 as shown in FIG.
14, and a roller 115 that engages with the cam surface 104 of the rotating body 102 is mounted on one end of the roller 115 so that it can rotate freely. A notch 117 for engagement is bored on the outside and other end. A spring hook 1 is installed on the other end of the first crank 113 and the mounting bracket 87.
Due to the tension of a spring 119 tensioned between the roller 115 and the cam surface 10 of the rotating body 102,
120 is a second crank, and this second crank 120 has a pin 121 implanted in one end of the second crank 120, which urges the first crank 113 to always engage with the first crank 113. It is mounted on the mounting bracket 87 by a shaft 123 so as to be able to swing in the engaged state in the cut position.

Due to the operation of the pulse motor 99, the rotating body 102,
By swinging the second crank 120 via the first crank 113 and the like, these sliding mechanisms can cause the rotary wheel 86 to slide in its axial direction.

Reference numeral 124 denotes a gear body, and this gear body includes a gear 125 with a flange toward the other side from one side in the axial direction, a first partially toothed gear 127 having a partially toothless portion 126, and the toothless gear 127. Part 12
The second partially toothed gear 12 includes only the gear 128 corresponding to No. 6.
9 are provided in that order, and this gear body 12
4 is arranged on both sides so that the first partially toothed gear 127 can mesh with the gear 105 of the rotating body 102, and the tooth portion 126 of the second partially toothed gear 129 can mesh with @106 of the rotating body 102. The pair of flanged gears is rotatable between the plates 73 and 73' and is fixed to a shaft 131 to which a flanged gear 130 forming a pair with the flanged gear 125 is fixed at one end. A pair of timing belts 134 and 135 are respectively connected between a pair of first stitches 32 and 133 which are rotatably mounted on the lower sides of the side plates 73 and 73' respectively. The pair of timing belts 134 and 135 are simultaneously moved up and down by the same amount as the gear body 124 is rotated by the rotating body 102. 136 and 137 are a pair of engaging bodies,
These engaging bodies are mainly provided with a projection 138, 139 and a pair of guide notches 140, 140', 141, 141' at one end of each, as shown in FIG. In addition, a locking pin 142, 143 is provided protruding near the other end on the negative side (the front end on the right side in the figure). 144 and 145 are a pair of bearings fixed to the timing belt 134 and 135, respectively, and each of these bearings has the engaging body 136.
Grooves 146 and 147 on which 137 can slide
Articles 19146.14 and 19146.14 have been established respectively.
7 with the engaging bodies 136 and 137, respectively, and
Each pin 142, 143 has a respective groove 146° 147
is engaged with and guided by the guide grooves 146' and 147',
The respective supports 144 of the engaging bodies 136 and 137 are slidably protruded from the respective supports 144 and 145.
, 145, respectively. A and A' are a pair of grooves for guiding the engaging bodies 136° and 137, and these grooves are provided on both side plates 73' and 73 of the carrier 3, respectively. Reference numerals 148 and 149 denote a pair of cam plate bodies each having a substantially ]-shaped cross section, and groove cams 150 and 151 each having a substantially ]-shaped cross section are provided on one side of the cam plate bodies.
A pair of elongated holes 152 for mounting are provided on the other side.
．． 152'153.153' are provided respectively,
Projections 156 and 157 each having an engagement pin 154 and 155 project from one side thereof, and these cam plates 148 and 149 have their respective elongated holes 152.1.
The flanged shafts 158, 158', 159, 159' inserted through the holes 52', 153, 153' are fixed from the outside to both side plates 73', 73 of the carrier 3, and the cam plates 148, 149 are fixed. Respective long holes 152, 152', 1
53.153' and flanged shaft 158, 158', 1591
The side plates 73' and 73 are slidable on the outside of the side plates 73 while being guided by the engagement with the side plates 73' and 59', respectively.
It is placed on a bridge. Reference numeral 160 denotes a crank, and as mainly shown in FIGS. A pin 162 that engages with the grooved cam 10 of the rotating body 102 is provided protruding from the other end. The crank 160 has the notch 161 connected to the pin 154 of the cam plate 148, and the pin 162 of the crank 160.
are fixed to one end of a turn 163 rotatably mounted between both side plates 73 and 73' of the carrier 3 while being engaged with the IRl 08 of the rotating body 102, respectively. Further, the other end of a rod 165 having a notch 164 at one end that engages with the pin 155 of the cam plate 149 is fixed to the other end of the rotating shaft 163. The crank 160 swings through the engagement between the grooved cam 108 and the pin 162 of the crank 160 due to the rotation of the crank 160.

By swinging the rod 165 via the rotation shaft 163, the pair of cam plates 148, 149 can be made to swing. Furthermore, the pair of cam plate bodies 148, 14
Each of the grooved cams 160 and 151 of 9 has pins 142 and 143 of the engaging bodies 136 and 137 mounted on the support bodies 144 and 145 of the pair of timing belts 134 and 135, respectively.
These bins 142,
143 and the grooved cams 150, 151, the engaging bodies 136, 137 slide, respectively. 16
Reference numeral 6 denotes a swinging pawl rod formed in a substantially "" shape, and a protrusion 167 that engages with the cam surface 103 of the rotating body 102 is provided on one side of the swinging pawl rod 166. One end has a claw 168 for engagement, and the other end has a weight 169 for urging.
are formed respectively.

The swinging pawl rod 166 is held in a state where the protrusion 6 f is engaged with the cam surface 103 of the rotating body 102 by the biasing force of the weight 169, and the mounting bracket 87 of the carrier 3
It is mounted on an ear part 170 erected by a shaft screw 171 so as to be able to swing. Reference numeral 172 designates a rotating circular body for parking the pair of timing belts 134 and 135, which has a notch 173 on a part of its circumferential surface and a protrusion 174 protruding adjacent to the notch. The rotating body 172 is positioned inside the side plate 73' of the carrier 3 and is screwed 173' onto the shaft 131 so that it can rotate together with the gear body 124. The swinging pawl rod 16B is formed through the engagement of the cam surface 103 of the moving body 102 with the protrusion 167 of the swinging pawl rod 166.
When the claw 16B swings, the notch 173 of the rotary circular body 172
The gear body 124 is temporarily parked through the rotating circular body 172 and the shaft 131, and the pair of timing belts 134 and 135 are temporarily prevented from moving by these parking mechanisms.
In this state, the south of the gear 105 of the rotating body 102 is located at the toothless portion 126 of the first toothless gear 127, Although the gear 105 rotates, it idles between the teeth of the toothless portion 126, and its rotation is not transmitted to the gear 124 and shaft 131.Next, as the rotating body 102 reverses, its cam 103 and oscillation occur. The return movement of the swinging claw rod 166 through engagement with the protrusion 167 of the moving claw rod 166 causes the rotating circular body 17
At the same time as the temporary locking of the gear body 124 via the shaft 131 and the gear body 131 is released, the teeth 106 of the rotary body 102
After the teeth of the tooth portion 128 of the second toothless gear 129 of No. 4 are engaged with each other and the gear body 124 is rotated for a period corresponding to the gap between the teeth of the toothless portion 126, the teeth of the gear 105 are again engaged with the teeth of the tooth portion 128 of the second toothless gear 129. gear 12
7, the rotation of the rotating body 102 is transmitted to the gear body 124 via the first partially toothed gear 127, and the gear body 12
4 and the shaft 131, the pair of timing belts 134 and 135 can be moved back and forth. Reference numeral 175 denotes a hammer for printing, and this hammer is suspended on the shaft 177 of the carrier 3 via the mounting bracket 17B, and is attached to the carrier 3 by the mounting bracket 178.
The end 175' of the hammer 175 swings toward the platen 2 by actuation of a solenoid 179 provided through the type wheel 12 (12, . . . 12o) and the ribbon 180. Provided printing paper 1
It is designed to be printed on 81. Therefore, as shown in Figure 2, the type wheel located at a position suitable for printing and the type wheel in the storage housing are overlapped vertically in order to improve the exchange speed and to downsize the printer. It is configured. As mentioned above, Figures 4 and 5 mainly show a large number of type wheels 1 with different fonts, numbers, types of characters, etc. on a carrier 3 mounted on a machine 1.
2 (12r . . . 12.) are equipped with a type wheel storage case 19 and a pedestal 45, both of which can be moved by rotation of a pulse motor 72.

From this state, in order to place a desired type wheel among the type wheels 12 (12,...12rl) having different fonts, numbers, character types, etc. in a position suitable for printing, the command is sent to the control circuit. You can give it to Then, in accordance with the control command of the control circuit, in the first stroke, the rotation of the pulse motor 72 causes the actuating piece 67 to move the cradle 45 together with the storage housing 19 in which the type wheel (121... bow 2- is housed) to the carrier 3.
After moving the cover member 21 to the so-called home position where it engages the sensor A provided in the
4', 34 and the engaging body 7777' provided on the carrier 3
said engagement body 77.77 by engagement with the bin 80.80' of
', the protrusions 79 and 79' are connected to the notch 4 of the lid 21.
3', 43 and presses the lid 21. As a result, the bins 44, 44' of the lid 21 and the notches 37.
37' is released, and the type wheel 12 (
121...12. , ) are provided on the timing belt 134, 135.
After moving while slightly engaging the protrusions 138 and 139 of 6 and 137, it is engaged with the spring stop 84 and 84'. ) By the return movement of the pulse motor 72 according to the control command of the control circuit, the accommodation case 19 is moved back together with the pedestal 45, and the desired type wheel in the accommodation case 19 is moved so that its notch 13.13' is aligned with the engagement body 136. The gear 101 is positioned slightly engaged with the protrusions 138 and 139 of the gear 137 (this state is shown in the figure below).Next, as a second stroke according to the control command of the control circuit, the gear 101 is rotated by the rotation of the pulse motor 99. The rotation of the rotating body 102 via the transmission gear group 112 is caused by the shaft 131 via the gear 105 and the first partially toothed gear 127 of the gear body 124.
, the flanged gears 125 and 130 are rotated, and the pair of timing belts 134 and 135 are moved to the support body 1.
44.145 and the engaging bodies 136.137 are moved in the direction of the arrow in the disciple work area, and as a result, the engaging bodies 136.1
By the engagement of the 37 bins 142, 143 with the groove cams 150, 151 of the cam plate bodies 148, 149, the engaging bodies 136,
The projections 138 and 139 of 137 are the notches 13 of the type wheel.
, l 3' completely engages the type wheel and raises the type wheel to a position where its mounting hole 16 is between the pivot shaft 86 and the bearing 97 and faces the pivot shaft 86 and the bearing 97. At the same time, the rotation of the gear 105 of the rotating body 102 is interrupted by the toothless portion 126 of the first partially toothed gear 127, and the transmission to the shaft 131 via the first partially toothed gear 127 is cut off. Due to the engagement between the surface 103 and the protrusion 167 of the swinging pawl rod 166, the claw 168 of the swinging pawl rod 166 engages with the notch 173 of the rotating body 172, and as the gear body 124 rotates through the shaft 131. , after stopping the movement of the pair of timing belts 134 and 135 and temporarily parking the type wheel at the above-mentioned position,
02 cam surface 104 and first crank 113 roller 1
15, the rotation shaft 86 slides together with the stopper 90 toward the shaft support 97, and rotates between the mounting hole 16 and the parking hole 17 of the type wheel. The movable shaft 86 and the projections 89 of the stopper 90 are engaged with each other to fix the type wheel to the rotary shaft 86. In addition, the rotating body 1
02 is issued. This sensor C detects the actuating piece of the shaft 131 to detect the initial position. As the third stroke, the grooved cam 108 and crank 160 of the rotating body lO2 immediately after that
rocking of the crank 160 due to engagement with the bin 162;
A pair of cam plates 148149 are moved through the elongated holes 152.1 in the direction of the arrow by the swinging of the rod 165 via the rotation shaft 163.
The grooved cams 150.15 of the pair of cam plates 148, 149 are moved through engagement between the shafts 158 and 158'.
1 and the engagement bodies 136, 137 with the respective pins 142, 143, the movement of the engagement bodies 136, 137 causes their respective protrusions 138, 139 to move into the notches 13, 13 of the type wheel.
' to disengage the type wheel and attach it to the rotating shaft 86 in a rotatable state suitable for printing operation (the figure shows the state during this period).
In this state, the operating piece 96 is located at the position of the sensor B, and the shaft 94 of the pulse motor 93 and the type wheel are located at the home position in the rotational direction. Therefore, in this state, by driving the pulse motor 93 according to the control command of the control circuit and operating the solenoid 179, it is possible to cause the type wheel to perform desired printing. When printing is completed and a control command is given from the control circuit to exchange with another type wheel, the pulse motor 9
After the shaft 94 of the pulse motor 93 and the type wheel are positioned at the home position in the rotation direction by the drive of step 3, the rotating body 102 is rotated in the opposite direction by the rotation of the pulse motor 99 in the opposite direction. , crank 160 and rotating shaft 1
63 and the rod 165 in the opposite directions, respectively, to move the pair of cam plates 148, 149 in the opposite directions to the projections 138.
139 into the notches 13 and 13' of the type wheel, the engaging teeth 106 of the rotary body 102 are meshed with the teeth 12B of the second partially toothed gear 129 of the gear body 124, and the teeth ilL are engaged. Rotate the body 124 in the opposite direction as described above, and! 81 A pair of timing belts 1 via a rotating circular body 172 and a shaft 131 by the claw 168 of the claw rod 16B
34.135, the temporary parking state of the type wheel is released, and at the same time, the gear body 12 is attached to the gear 105 of the rotating body lO2.
The first partially toothed gear 127 of No. 4 is meshed and rotated, and the pair of timing belts 134.
137, the pair of timing belts 134 and 135 are restored to move the engaging bodies 13B and 137 into the notch 13 of the type wheel.
．． 13, and the type wheel is completely accommodated in the housing housing 19. Thereafter, each part is operated in the same manner as described above, and the type wheel to be replaced is mounted on the pivot shaft 86 in a condition suitable for printing operation.

Effects of the Invention As described above, according to the present invention, a plurality of type wheels each having a different type portion and moving in the axial direction of a platen provided on a machine stand are controlled by a control signal from a control circuit. Since each type wheel is accommodated in such a way that it can be moved up and down, a desired one of the plurality of type wheels can be moved as needed by the operation of the up and down mechanism and the sliding mechanism, respectively. The type wheel can be automatically mounted on a pivot shaft adapted to the type wheel, and can be automatically replaced with another type wheel in the housing.

Not only can the total printing speed be extremely efficiently improved when printing mixed characters with different fonts, number numbers, character types, etc., but also the space for moving the carrier can be used to reduce the storage space. Since the platen can be moved in and out of the cradle in the axial direction, the printer as a whole can be made smaller, and the operator can easily operate the type wheels inside and outside the printer with one hand without changing his posture.

It can be easily replaced along with its housing, and the effects it brings are extremely large.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which the first figure is a partial plan view with a portion cut away, the second figure is a partial back view, and the third figure is a partial cross-sectional view. Figure 4 is a side view of a part shown in cross section, Figure 5 is a plan view of a part shown with a cutout, and Figure 6 is a side view of a part shown with a cutout □. The side view, Figure 7 is a partial perspective view shown with a partial cutaway, and Figures 8 to 8 are partial side views shown in different operating states, and the disciple figure is shown with a partial cutaway. Partial side view, Figure 13 is a front sectional view of part, Figure 13 is a front view of part shown in a different operating state from Figure 13, Deshi Shikoku is an enlarged plan view of part, Figure 13 is an enlarged side view of a portion shown in a different operating state from Figure 4;
Figure 10 is an enlarged side sectional view of a portion, Disciple Moda and Disciple 2 are enlarged side sectional views of a portion shown in different operating states, Disciple 9 is an enlarged plan view of a portion shown in cross section, The second figure is an enlarged side view of a part shown in a different operating state from the disciple's work area. Figure 1MS20 is an enlarged front view of a part shown in a different operating state from the disciple E figure. FIG. 23 is an enlarged perspective view of a portion, and FIG. 23 is an enlarged perspective view of a portion. l... Machine base, 2... Platen, 3... Carrier, 4...
Rail, 5... Support rod, 6... Pulse motor, 7... 1 group of conduction teeth, 8.9, 10... Pulley, 11... Strap, 12 (121...-12,) -- Printed text wheel, 13
゜13'...Notch, 14.14...Arm rod, 15...Boss part, 16...Mounting hole, 17...Parking hole 18.18...Pin, 19...Type wheel housing, 20・・Housing, 2
1... Lid material, 22... Notch, 23 (23,---3,)
--Support plate, 24. Front blade side plate of housing 20, 25. Front side plate of housing 20, 26. Left side plate of housing 2°, 26.
・Right side plate of housing 20, 2727'...Long groove, 28.29
．． 29'...Through hole. 30.31.31'...Free piece, 32.32'...Protrusion, 33.33'...Retaining groove, 34.34'...Cam surface,
35.35'...notch, 36,36'...free end,
37.37'...notch, 3838'...notch, 39.3
9'... legitimate child, 40.40'... groove, 41,41'.
・Jump stop, 42, 42...Slanted part, 43.43...Notch, 4444'...Pin, 45...Base, 46...Base plate of pedestal, 47...Concave part, 48.48'...・Both sides plates, 49
．． 49'/ψ boss, 50.50 conflict/boss hole, 51.51
'...hole, 52...rack 53...notch, 54...tongue, 55.55'...protrusion, 56...hole, 57...attachment hole, 58...protrusion, 59...claw Part, 60... legitimate child. 61...Notch, 62...Protrusion, 63...Engagement part, 64
... Parking lever, 65 ... Hole, 66 ... Pin, A ... Sensor, 67 ... For operation 68 ... Bottom plate of carrier 3, 69
...Through hole. 70... Side edge of through hole 69, 71... Guide hole, 72...
Pulse motor, 73.73'...Both sides of carrier 3,
74... Rotating wheel of pulse motor 72, 75... cradle 45
Stepped inner surface of the bottom plate 46, 76... Parking hole of the housing 20, 7
7.77'...Engaging body, 78.78'...Hole, 79.7
9'...Protrusion, 80.80'...Pin, 81.81'.
・Protrusion, 82.82'... Long hole, 83, 83'... Shaft,
84.84... Jump, 85.85'... Screw, 86.
・Rotation axis, 87...Mounting bracket, 87. ．． 872...ear, 88...conduction gear, 89...protrusion, 90...stopper,
911.912...Pair of collars, 92...Compression spring, 93...Pulse motor, 94...Pulse motor 93
95...Gear B...sensor, 96...operating piece, 97...shaft support, 98...mounting plate, 99...pulse motor, 100...rotating axis of pulse motor 99, 101
... Gear, 102 ... Rotating body, 103104 ... Cam surface, 105 ... Gear, 106 ... Retaining tooth, 107 ...
One end of the rotating body 103, 108...Groove cam, 109...
Mounting hole, 110...Seat, 111...Shaft, 112...Transmission gear group, 113...First crank, 114...Shaft, 11
5...Roller, 116...Shaft, 117...Notch, 11
8...Spring hook, 119...Spring, 120
...Second crank, 121...Pin, 122...Other end of second crank 120, 123...Shaft. 124... Gear body, 125... Gear with flange. 126... Missing tooth portion, 127... First missing tooth gear 128...
Tooth portion, 129...Second toothless gear, 130...Gear with flange, 131...Shaft, 132.133...Pair of gears, 1
34,135...Pair of timing belts, 136.1
37...Pair of engaging bodies, 138.139...Protrusion, 14
0.140', 141.141...notch, 142,14
3...Bin, 144.145...Support, 146.14
7φ・Groove, 146', 147'...Guide line @fig,
148. 149...Pair of cam plates, 150.1
51...Groove cam, 152, 152'...Pair of long holes, 1
53.153'...Pair of long holes, 154.155...Bin, 156.157...Protrusion, 158.158,15
9.159... Shaft with flange, 160... Crank, 16
1. Notch. 162...Bin, 163...Rotation axis, 164...Notch,
165...rod, 166...swinging claw lever, 167...protrusion,
168...Claw, 169...ff111.170...Ear, 171...Shaft screw, 172...Rotating circle, 173...
Notch. 173...Screw stop, 174...Protrusion, 175...Hammer, 175'...One end of hammer 175, 17B...
・Mounting bracket, 177...Shaft, 178...Mounting bracket, 17
9.Solenoid, 180..Ribbon, 181..Printing paper, C..Sensor. Director Kuro 1) Mr. Akio 1, Indication of the case: Japanese patent application No. 61-2678482, Name of the invention: Printer 3, Person making the amendment Relationship to the case: Patent applicant: Location: 1-11-2-4, Kyobashi, Chuo-ku, Tokyo , Date of amendment order: March 31, 1985 (Shipping date: April 28, 1988) 5. Column 6 for a brief explanation of the drawings in the specification subject to the amendment, Contents of the amendment.

Claims (1)

[Claims] A platen provided on a machine base is moved in a direction perpendicular to the movement of the carrier via a pedestal on a carrier suspended so as to move in the axial direction of the platen. After positioning one of the plurality of type wheels in the housing of the type wheel with a plurality of types suspended so that it can be placed at a position suitable for printing, the type wheel provided on the carrier is The type wheel is moved upward to a position suitable for printing by the operation of the up-and-down mechanism, and the rotating shaft of the type wheel, which is also provided in the carrier, is engaged with the type wheel by the sliding mechanism, thereby printing the type in the type wheel. 1. A printer that selectively prints via a hammer, characterized in that a housing case is made to be a pedestal that can be moved in and out in the axial direction of a platen.