JP5255802B2 - Printer - Google Patents

Description

This invention relates to a printing machine.

  In a normal printing machine, an ink fountain roller is disposed in the vicinity of an ink fountain member that constitutes the ink fountain, and the ink that has come out of the ink fountain on the outer peripheral surface of the ink fountain roller is transferred to the ink kneading roller by the ink transfer roller, This ink is further supplied to the printing surface of the printing portion via a plurality of ink kneading rollers.

  Conventionally, the ink fountain member has a plate shape, and the ink in the ink fountain passes through the ink passage between the ink fountain member and the ink fountain roller and comes out on the outer peripheral surface of the ink fountain roller.

  In such a printing machine, the type of ink to be used may change depending on the content of printing. In such a case, when the previous printing is completed, the ink in the ink fountain is used for the next printing. The work of changing the setup is performed. This setup change operation includes collecting old ink in the ink fountain and cleaning the ink fountain member and each roller.

  In conventional printing presses, the ink transfer roller and the ink kneading roller are automatically cleaned by so-called inker cleaning, but the ink fountain roller and ink fountain member are difficult to automate, and are manually operated as follows. Cleaning was performed. That is, when the previous printing is finished, the old ink remaining in the ink fountain is manually removed while the rotation of the ink fountain roller is stopped, and the portions of the ink fountain roller and ink fountain member that have been in contact with the ink are removed. It was washed by hand. For this reason, collecting and cleaning old ink is cumbersome, and it is necessary to manually clean the ink fountain member and the ink fountain roller, so it takes time to change the setup, and it takes a long time to start the next printing. It cost.

  In addition, the size (width) of the ink passage may be changed depending on the content of printing. In such a case, conventionally, the size of the ink passage was adjusted by changing the position and angle of the ink fountain member. This adjustment was also troublesome.

  Therefore, the inventor of the present invention has proposed a printing machine described in Patent Document 1.

  This printing machine includes an ink fountain member having an ink fountain forming surface, an ink fountain roller that ejects ink to the outer peripheral surface through an ink passage between the ink fountain member, and a portion that prints the ink that has appeared on the outer peripheral surface of the ink fountain roller A plurality of rollers to be supplied to the belt, a belt-like sheet hung on the ink fountain member so that the intermediate portion is in close contact with and covers the ink fountain forming surface, and a sheet moving device that moves the belt-like sheet in the length direction thereof. A pair of barrier plates that are attracted to the ink fountain forming surface from above the sheet by the permanent magnets and adsorbed to the outer peripheral surface of the ink fountain roller to form the side walls of the ink fountain, and close to the lower portion of the ink fountain roller The disposed ink collection tank, the ink scraping blade provided in the ink collecting tank, and the scraping position where the ink scraping blade is pressed against the outer peripheral surface of the ink source roller And a blade position switching device for switching to the standby position away from the ink fountain roller. The ink fountain member is rotated by an ink fountain member rotating device so as to be positioned at a plurality of work positions. When the ink fountain member is positioned at each work position around the ink fountain member, A plurality of ink fountain forming surfaces are formed in the direction of rotation of the ink fountain member so that the ink passage forming portion at the tip is close to the ink base roller and forms an ink fountain. The distances to the passage forming portions are different from each other.

  In the printing machine disclosed in Patent Document 1, the setup change work can be made simpler than before, and the work time can be shortened.

  However, replacement of the old barrier plate and the new barrier plate and supply of new ink to the ink fountain cannot be performed automatically, and the setup change operation is not simplified and the operation time is not sufficient.

  Since the weir plate is firmly adsorbed to the ink fountain forming surface and the outer peripheral surface of the ink base roller by the permanent magnet, it is difficult to automatically replace it. If the dam plate is attracted to the ink forming surface and the outer peripheral surface of the ink base roller using an electromagnet, the dam plate can be easily and automatically replaced by stopping energization of the electromagnet. However, in that case, it is necessary to always energize the electromagnet during printing, and there arises a problem that the electromagnet generates heat and its adverse effect is great, so that a permanent magnet must be used.

  In addition, it is difficult to automatically replenish ink fountain with ink placed in a metal can.

  Furthermore, when a large amount of printing is performed, since a desired amount of ink is put in the ink fountain at a time, there is a problem in that the ink in the ink fountain deteriorates during printing and adversely affects the print quality. . In addition, a large amount of old ink may remain at the time of setup change. In this case, not only the remaining ink is wasted, but it takes time to collect the remaining ink.

  Therefore, the inventor further proposed a printing machine described in Patent Document 2.

The ink container of Patent Document 2 has an accordion shape, and is normally closed and a notch that is opened by pressure is formed in the bottom wall. The ink replenishing device of Patent Document 2 is configured to hold the bottom portion and the middle portion of an ink container and open the cut by pushing the upper portion of the container to eject ink.
Japanese Patent No. 3194174 JP 2006-272865 A

  In a printing machine using an ink container and an ink replenishing device in Patent Document 2, it is possible to automate the replenishment of ink to the ink fountain, further automate the setup change work, and simplify the setup change work and reduce the work time. Shortening is possible.

  However, the ink container has a problem that it is difficult to refill ink.

The object of the present invention is to solve the above-mentioned problems, enable the automatic replenishment of ink to the ink fountain, further automate the setup change work, and thereby simplify the setup change work and shorten the work time. as well as to provide easy printing machine refill ink.

According to a first aspect of the present invention, there is provided an ink fountain member having an ink fountain forming surface for forming an ink fountain, an ink fountain roller for ejecting ink to an outer peripheral surface through an ink passage between the ink fountain member, Holds a desired ink container, a plurality of rollers that supply the printing part with ink that has come out on the outer peripheral surface of the roller, a plurality of ink containers that contain different types of ink and are stored in a predetermined container storage unit A printing press comprising an ink replenishing device for replenishing ink in the ink fountain and an ink storage section provided with a plurality of sets of ink holding devices , each ink container having an open top and a bottom A cylindrical container body in which an ink outlet is formed, a piston and lid member that is closely inserted into the container body from the upper opening so that the container body can be moved up and down in a sealed state, and an ink outlet is opened. This valve is closed while the pressure in the container body is low, and opens when the pressure in the container body rises, and projects outward on the outer peripheral surface of the container body. A holding bulge with the lower part facing downward is formed, and each ink holding device of the ink storage unit is opened and closed by an elastic force to closely contact the lower outer peripheral surface of the holding bulge of the container body. And a pair of leaf spring-like pair of container holding members having a circular shape in plan view and a partial circular shape with the distal end side separated as a whole .

In this case, the container can be stored with the pair of container holding members sandwiching the outer peripheral surface of the container body on the lower side of the overhanging portion. The container can be easily taken away from the container holding member simply by moving in the direction away from the distal end side .

According to a second aspect of the present invention, there is provided a printer according to the first aspect , wherein the ink replenishing device comprises a level sensor for detecting the level of ink in the ink fountain, and the ink level in the ink fountain during the printing operation. Ink is supplied to the ink fountain portion where the ink level is lower than a predetermined value.

  In this case, the level of ink in the ink fountain is kept substantially constant during printing. For this reason, it is not necessary to put a large amount of ink in the ink fountain as in the past, and the level of ink in the ink fountain can be lowered to reduce the amount of ink to be placed in the ink fountain. . For this reason, it is possible to prevent the ink in the ink fountain from being deteriorated and adversely affecting the print quality. Further, it is possible to reduce the amount of ink that is wasted when the setup is changed and to shorten the time required for collecting the remaining ink.

According to a third aspect of the present invention, in the printer according to the first or second aspect, the holding overhanging portion is an annular convex portion integrally formed on the outer peripheral surface of the container main body. .

In this case, even if the container rotates around the axis and changes its direction, the container can be reliably held by the container holding member as described above .

According to a fourth aspect of the present invention, in the printer according to any one of the first to third aspects, the ink replenishing device includes an ink container holding means for holding the ink container in a state where the upper opening of the ink container is sealed, A compressed air supply means for supplying compressed air to a portion of the held ink container above the piston and lid member, and the ink container holding means includes a bottom placement portion on which the bottom of the ink container is placed, and a bottom placement A compressed air supply means provided with a hermetic holding member that is provided movably up and down above the mounting portion and that seals the upper opening of the ink container and holds the container with the bottom mounting portion when moved downward; Is characterized in that compressed air is supplied into the ink container through a check valve provided inside the hermetic holding member .

In this case, the container body is sandwiched from above and below by the bottom mounting part and the sealing holding member, the container can be securely sealed and held, and only by supplying compressed air into the container body by the compressed air supply means, The valve can be opened easily and reliably. Further, when compressed air is not supplied into the container body, the check valve can prevent the pressure in the container body from decreasing .

According to the printing machine of the present invention , as described above, the container can be stored with the pair of container holding members sandwiching the outer peripheral surface of the container body on the lower side of the overhanging portion. The container can be easily taken away from the container holding member by simply moving the container holding member in a direction away from the tip side of the container holding member.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a left side view schematically showing a part of an ink supply device of a printing press, and FIG. 2 is a plan view of the same. In the following description, the right side of FIGS. 1 and 2 is the front, the left side is the rear, and the left and right when viewed from the front are the left and right.

  1 and 2, the first of a plurality of ink kneading rollers is located behind the ink fountain roller (ink fountain roller) (3) adjacent to the rear end of the ink fountain member (2) forming the ink fountain (1). The ink kneading roller (4) is arranged, and the ink transfer dividing roller unit (5) is arranged between the original roller (3) and the kneading roller (4). The axes of the original roller (3) and the kneading roller (4) are parallel to each other and extend in the left-right direction. The original roller (3) and the kneading roller (4) are rotatably supported by the frame (7) of the printing press, and are rotated in the direction of the arrow in FIG. 1 at a predetermined rotational speed by a driving device (not shown). The rotation speed of the original roller (3) is about 1/10 of that of the kneading roller (4).

  Details of the split roller unit (5) are shown in FIGS. FIG. 3 is a partially cutaway plan view of the split roller unit (5), with the lower side of the figure being the front and the upper side being the rear. FIG. 4 is an enlarged cross-sectional view of a part of FIG. 2 as viewed from the left side.

  The left and right ends of the linear support member (6) parallel to the rollers (3) and (4) are fixed to the frame (7), and a plurality of movable members (8) are attached around the support member (6). Yes. The support member (6) has a prismatic shape having a slightly larger front-rear width than a vertical width. The movable member (8) has a short cylindrical shape, and the movable member (8) is formed with a relatively large square hole (9) penetrating in the axial direction. A plurality of movable members (8) are arranged in the axial direction between a pair of end columnar fixed members (10) fixed to the frame (7) so as to face each other and passed through the support member (6). The support member (6) is passed through the hole (9) of the movable member (8). The vertical width of the hole (9) of the movable member (8) is substantially equal to the vertical width of the support member (6), and the upper and lower surfaces of the hole (9) are in sliding contact with the upper and lower surfaces of the support member (6). Further, the front and rear width of the hole (9) is slightly larger than the front and rear width of the support member (6), and the movable member (8) has a rear surface of the hole (9) with respect to the support member (6). The front end position in contact with the rear surface and the rear end position in which the front surface of the hole (9) contacts the front surface of the support member (6) can be moved back and forth. On the upper surface of the hole (9) of the movable member (8) that is in sliding contact with the support member (6), a corner groove (11) is formed over the entire length of the movable member (8).

  As will be described later, each movable member (8) is positioned in the axial direction with respect to the support member (6), and between the movable members (8) and between the fixed members (10) at both ends, A slight gap is provided in the axial direction. Therefore, each movable member (8) can move individually in the front-rear direction with respect to the support member (6).

  An inner ring of a ball bearing (12) that is a rolling bearing is fixed to the outer periphery of each movable member (8). A metal sleeve (14) is fixed to the outer periphery of the outer ring of each ball bearing (12), and a rubber thick cylindrical ink transfer roller (15) is fixed to the outer periphery of the sleeve (14).

  A short cylindrical dust-proof member (16) is fitted between the outer peripheries of adjacent movable members (6). The dust-proof member (16) is made of an appropriate rubber-like elastic material such as natural rubber, synthetic rubber, or synthetic resin, for example, and flange portions (16a) that slightly protrude inward are integrally formed at both ends thereof. These flange portions (16a) are fitted into annular grooves (17) formed on the outer peripheral surface of the portion near the left and right ends of the movable member (8), whereby the dustproof member (16) is moved to the movable member (8). It is fixed to. A similar dustproof member (16) is fitted between the outer peripheries of the movable member (8) at the left and right ends and the fixed member (10) adjacent thereto.

  A roller position switching device (19) for switching the position of the ink transfer roller (15) is provided on the support member (6) side between each movable member (8) and the support member (6) as follows. .

  A cylinder portion (20) is formed by forming a hole extending from the front to the rear a little at the portion of the support member (6) corresponding to the axial central portion of the movable member (8), and from the rear surface to the front a little. An extended spring accommodating hole (21) is formed. The center of the cylinder part (20) and the center of the spring accommodating hole (21) are on one straight line in the front-rear direction near the center of the movable member (8) in the vertical direction. A short cylindrical piston (22) is inserted into the cylinder part (20) through an O-ring (23) so as to be slidable back and forth. A ball (24) as an urging member is slidably inserted in the spring accommodating hole (21), and a compression coil spring (25) that urges the ball backward is inserted.

  Recesses (26) and (27) are formed on the front surface of the hole (9) of the movable member (8) facing the center of the piston (22) and the rear surface of the hole (9) facing the center of the ball (24), respectively. Is formed. The width of each recess (26) and (27) in the axial direction of the movable member (8) is constant. The cross-sectional shape of each of the recesses (26) and (27) in the cross section orthogonal to the axis of the movable member (8) is uniform, and forms an arc shape centering on a straight line parallel to the axis. A taper-shaped protrusion (22a) is formed at the center of the end face of the piston (22) facing the recess (26), and the protrusion (22a) is fitted into the recess (26). Note that the length of the piston (22) excluding the protrusion (22a) is slightly shorter than the length of the cylinder part (20), so that the protrusion even when the piston (22) is most retracted into the cylinder part (20). Most of (22a) protrudes from the front surface of the support member (6). On the other hand, a part of the outer periphery of the ball (24) is fitted in the recess (27).

  At the rear part of the support member (6), the ball (24) is always brought into pressure contact with the rear surface of the hole (9) of the movable member (8) by the elastic force of the spring (25), and the ball (24) has an outer periphery. The portion is fitted into the recess (27) and is brought into pressure contact with the front and rear edges of the recess (27). On the other hand, at the front part of the support member (6), the front surface of the support member (6) or the piston (22) is brought into pressure contact with the front surface of the hole (9) of the movable member (8), and the protrusion ( Most of 22a) is in the recess (26). In this way, most of the protrusion (22a) of the piston (22) and a part of the ball (24) are always fitted in the recesses (26) and (27), so that the support member (6) The movable member (8) is positioned in the axial direction.

  The support member (6) is formed with an air supply hole (28) extending in the axial direction from the left end and closed near the right end, and the left end opening end of the hole (28) is connected to a compressed air source ( Connected to 29).

  A switching valve (solenoid valve) (30) is mounted on the upper surface of the support member (6) facing the groove (11) of the movable member (8), and the two ports of this valve (30) are connected to the support member (6 ) Are communicated with the air supply hole (28) and the cylinder part (20) through the communication holes (31) and (32) formed in the above. Further, the electric wire (33) of the valve (30) is drawn out through the groove (11) and connected to the control device (34).

  When the valve (20) is energized (on state), the cylinder part (20) is communicated with the air supply hole (28) via the valve (30), and when the energization is stopped (off state), the cylinder part (20) is in communication with the atmosphere via valve (30). Then, the position of each ink transfer roller (15) in the front-rear direction is individually switched by individually switching the energization state of the valve (30) of each switching device (19) by the control device (34).

  When the valve (30) is switched to the off state, the cylinder (20) is brought into communication with the atmosphere, so that the piston (22) can move freely within the cylinder (20). For this reason, the movable member (8) is moved to the rear side via the ball (24) by the spring (25). As a result, the movable member (8) and the ink transfer roller (15) are switched to the rear end position, and the ink transfer roller (15) moves away from the original roller (3) and presses against the kneading roller (4).

  When the valve (30) is switched on, the cylinder part (20) communicates with the air supply hole (28) and further through the compressed air source (29), so that the compressed air is supplied to the cylinder part (20). Is supplied. For this reason, against the force of the spring (25), the piston (22) protrudes forward from the support member (6), and thereby the movable member (8) is moved forward. As a result, the movable member (8) and the ink transfer roller (15) are switched to the front end position, and the ink transfer roller (15) moves away from the kneading roller (4) and presses against the original roller (3).

  A position switching detection sensor (102) made of a magnetic sensor is fixed in an embedded manner on the lower surface of the support member (6) that is in sliding contact with the bottom wall of the hole (9) of the movable member (8), and a movable member ( A permanent magnet (103) is fixed to the bottom wall of the hole (9) of 8) in an embedded manner. The lower surface of the sensor (102) is flush with the lower surface of the support member (6) or slightly inside (upper). The upper surface of the permanent magnet (103) is flush with the bottom wall surface of the hole (9) of the movable member (8) or slightly inward (lower side). In a state where the movable member (8) is switched to the rear end position, the sensor (102) is opposed to the front-rear direction center of the permanent magnet (103), and in a state where the movable member (8) is switched to the front end position, The sensor (102) is detached rearward from the permanent magnet (103). Accordingly, the output of the sensor (102) changes depending on the position of the movable member (8), and the position of the movable member (8), that is, the ink transfer roller (15), can be known from the output of the sensor (102).

  As will be described later, the ink that has come out from the ink fountain (1) to the outer peripheral surface of the original roller (3) is transferred to the ink transfer roller (15) while the ink transfer roller (15) is switched to the front end position. The ink transferred to each ink transfer roller (15) is transferred to the kneading roller (4) while the ink transfer roller (15) is switched to the rear end position. The ink transferred to the kneading roller (4) is further supplied to the printing surface via a plurality of ink kneading rollers. Then, the amount of ink supplied to the printing surface depends on the position in the width direction by controlling the time when the control device (34) is switched to the front end position and the rear end position for each ink transfer roller (15). Adjusted. In addition, the output of the sensor (102) detects whether the ink transfer roller (15) has been switched correctly.If the ink transfer roller (15) is not switched normally, an alarm is issued. It is done.

  FIG. 5 is an enlarged view of a part of FIG. 1, and FIGS. 6 to 9 are diagrams showing in detail each part of the ink supply device.

  The ink fountain member (2) has, for example, a triangular prism shape with a regular triangular cross section, and cylindrical support shaft portions (35) provided at both left and right ends thereof are rotatably supported by the frame (7). The frame (7) is provided with an ink fountain member rotating device (36) equipped with an electric motor. The rotating device (36) rotates the ink fountain member (2), and the ink fountain member (2) is rotated every 120 degrees. It is positioned at three work positions and is fixed at each work position.

  The three sides around the ink fountain member (2) are the ink fountain forming surfaces (37a), (37b) and (37c), and the counterclockwise ends of the ink fountain forming surfaces (37a) to (37c) Are the ink passage forming portions (38a) (38b) (38c) corresponding to the ink fountain forming surfaces (37a) to (37c). The ink fountain forming surface is generically designated by reference numeral (37), and when it is necessary to distinguish, the first ink fountain forming surface (37a), the second ink fountain forming surface (37b), the third This is called the ink fountain forming surface (37c). The ink passage forming portions are also collectively referred to by reference numeral (38), and when it is necessary to distinguish them, the first ink passage forming portion (38a), the second ink passage forming portion (38b), and the third are sequentially arranged in the counterclockwise direction. It will be referred to as an ink passage forming portion (38c). On the end face of the ink fountain member (2), numbers "1" to "3" representing the numbers corresponding to each ink passage forming portion (38) are marked.

  In the vicinity of the ink fountain member (2), a sheet moving device (40) for feeding and winding the belt-like sheet (39) is provided.

  The sheet moving device (40) includes a feeding shaft (41), a winding shaft (42), and a shaft driving device (43) for driving these shafts (41) (42). The shaft driving device (43) includes an electric motor (44) that drives the feeding shaft (41), and a power transmission mechanism (45) that transmits the rotation of the motor (44) to the winding shaft (42). The feeding shaft (41) rotates at a constant speed smaller than the winding shaft (42). Further, the power transmission mechanism (45) is provided with a sliding mechanism (47) that provides frictional resistance and allows sliding. For example, the power transmission mechanism (45) includes a gear train, and the sliding mechanism (47) includes a first gear that meshes with a gear on the motor (44) side and a second gear that meshes with a gear on the winding shaft (42) side. Are combined with each other so as to rotate while sliding with a predetermined frictional resistance.

  The core cylinder (48) of the sheet roll (49) in which the belt-shaped sheet (39) made of plastics is wound around the core cylinder (48) made of aluminum alloy etc. is attached to and detached from the feeding shaft (41) It is designed to be freely fixed. A cylindrical winding member (50) is detachably fixed to the winding shaft (42). Although illustration is omitted, winding cylinders made of plastics or the like are fitted on the outer periphery of the winding member (50) so as not to rotate with each other.

  The sheet (39) fed from the sheet roll (49) fixed to the feeding shaft (41) is applied to the ink fountain member (2) so as to cover the ink fountain forming surface (37), and then the winding member ( 50) and the leading end of the sheet (39) is fixed to the winding cylinder by an appropriate means.

  Even when the outer diameter of the sheet (39) wound around the winding member (50) is the smallest, the sheet (39) in the portion of the winding member (50) on the assumption that there is no slip by the sliding mechanism (47) The relationship between the rotational speed of the feeding shaft (41) and the take-up shaft (42) is determined so that the moving speed of the feeding shaft (41) is larger than the moving speed of the sheet (39) in the sheet roll (49) portion of the feeding shaft (41). It has been.

  By driving the feeding shaft (41) and the winding shaft (42) by the motor (44), the sheet (39) is fed from the sheet roll (49) and is moved to the ink fountain member (2) in the length direction thereof. It moves along and is wound up by the winding member (50). The relationship between the rotational speeds of the feeding shaft (41) and the winding shaft (42) is determined as described above, and a sliding mechanism (47) is provided between the motor (44) and the winding shaft (42). Therefore, the sheet (39) is always moved in a tensioned state. For this reason, when the motor (44) stops, the portion of the sheet (39) covering the ink fountain forming surface (37) comes into close contact with the ink fountain forming surface (37).

  Each ink fountain forming surface (37) of the ink fountain member (2) forms an ink fountain (1) when the ink fountain member (2) is positioned at the corresponding working position. Actually, the ink fountain (1) is formed by the portion of the sheet (39) covering the ink fountain forming surface (37) and the outer peripheral surface of the original roller (3). Then, the ink passage forming portion (38) corresponding to the ink fountain forming surface (37) is close to the outer peripheral surface of the original roller (3) through the sheet (39) and is in close contact with the ink passage forming portion (38). An ink passage (52) is formed between the sheet (39) portion and the outer peripheral surface of the original roller (3).

  The size of the ink passage (52) is the distance between the rotation center axis of the original roller (3) and the rotation center axis of the ink fountain member (2), the diameter of the original roller (3), and the ink fountain member (2). This is determined by the distance from the rotation center axis to the ink passage forming portion (38). In this example, the distance from the rotation center axis of the ink fountain member (2) to the ink passage forming portion (38) is changed for the three ink passage forming portions (38). For this reason, the size of the ink passage varies depending on the work position.

  Between the ink fountain member (2) and the original roller (3), a pair of left and right weir plates (53) forming the side wall of the ink fountain (1) are detachably fixed. The dam plate (53) has a substantially triangular shape, and the portion corresponding to the two sides of the triangle has a flat ink fountain adsorbing surface (53a) that adheres closely to the ink fountain forming surface (37) and the outer peripheral surface of the original roller (3). A concave partial cylindrical surface-shaped ink base roller suction surface (53b) that is in close contact with the ink is formed. In the vicinity of the two attracting surfaces (53a) and (53b) of each weir plate (53), an attracting permanent magnet (54) is fixed in an embedded manner.

  In the outer peripheral part of the original roller (3), a dam plate adsorbing part (55) made of a magnetic material is provided at two locations near the left and right ends, and the parts other than the adsorbing part (55) are made of a non-magnetic material. . The width of the adsorbing part (55) is substantially equal to the width of the dam plate (53). Each ink fountain forming surface (37) of the ink fountain member (2) may be entirely made of a magnetic material, or only the portion corresponding to the attracting portion (55) of the original roller (3) is a magnetic material. The remaining portion may be made of a nonmagnetic material.

  In the dam plate (53), the original roller adsorption surface (53b) is in close contact with the adsorption portion (55) of the original roller (3) and is adsorbed by a magnetic force, and the ink fountain adsorption surface (53a) is the sheet (39). ) To adhere to the ink fountain forming surface (37) and are attracted to the ink fountain by magnetic force, thereby being fixed to these and forming the side wall of the ink fountain. Since the weir plate (53) is only attracted to the original roller (3) by magnetic force, it does not hinder the rotation of the original roller (3).

  An ink recovery tank (56) is disposed in front of the lower portion of the original roller (3). An ink scraping blade (57) protruding obliquely upward and rearward from the upper end of the rear wall of the tank (56) is fixed to the rear part of the tank (56). The lateral width of the tank (56) and the blade (57) is larger than the lateral length of the original roller (3). After the tank (56) and the blade (57) are moved in the front-rear direction by a blade position switching device (58) equipped with an air cylinder, the upper end of the blade (57) is pressed against the outer peripheral surface of the original roller (3). The scraping position at the end and the standby position at the front end where the blade (57) separates from the original roller (3) are switched.

  A horizontal plate-like support base (59) that is long in the front-rear direction is provided on the upper right side of the frame (7), and a new dam plate (53) before use is placed on the upper surface of the support base (59). And a second dam plate mounting table (61) on which the used dam plate (53) is mounted. Each base (60) (61) includes a first receiving portion (62) having a convex partial cylindrical surface that receives the ink fountain roller suction surface (53b) of the weir plate (53), and a first receiving portion (62). And a second receiving portion (63) that protrudes from the lower portion of the dam plate (53) and receives the ink fountain suction surface (53a) of the ink fountain suction surface (53a) on the ink source roller suction surface (53b) side. A bar-like magnetic member (64) is fixed in an embedded manner on the upper part of the first receiving part (62).

  A container storage section (66) for storing a plurality of ink containers (65) is provided at the rear of the frame (7).

  The ink container (65) has a cylindrical container body (68) with an open top and an ink outlet (67) at the bottom, and a container body that can be moved up and down in a sealed state within the container body (68). (68) includes a piston / lid member (70) inserted from the upper opening (69) and a valve (71) for opening and closing the ink outlet (67).

  An ink outlet (67) is formed in the cylindrical portion (74) extending downward from the peripheral edge of the circular opening (73) formed at the center of the bottom wall (72) of the container body (68), and the cylindrical portion (74). The lower peripheral edge of the inner periphery of the valve seat is a valve seat (75). On the inner periphery of the cylindrical part (74), there are a small diameter part (74a), a larger diameter part (74b) larger than this, and a tapered part whose inner diameter gradually increases upward from the large diameter part (74b). (74c) are formed in order from the bottom, and the upward annular end surface between the small diameter portion (74a) and the large diameter portion (74b) is a spring receiving surface (74d).

  The valve (71) includes a valve member (76) disposed in the cylindrical portion (74) so as to move up and down through the cylindrical portion (74), and an elastic force that urges the valve member (76) upward. A compression conical coil spring (77) as a member. The valve member (76) is formed by forming a disc-shaped valve body (93) at the lower end of a vertical valve stem (92) and an outward flange (94) for receiving a spring near the upper end. . The upper part of the valve body (93) is a tapered surface (95) whose outer diameter gradually decreases as it goes upward. The outer diameter of the lower end of the tapered surface (95) is larger than the inner diameter of the valve seat (75), and the outer diameter of the upper end of the tapered surface (95) is smaller than the inner diameter of the valve seat (75). The portion of the valve stem (92) between the valve element (93) and the flange (94) is passed through the inside of the spring (77), and the large diameter portion at the lower end of the spring (77) is in the spring receiving surface (74d), The small diameter portion at the upper end of the spring (77) is brought into pressure contact with the lower end surface of the flange (94). Thus, the valve member (76) is biased upward, and the tapered surface (95) of the valve body (93) is pressed against the valve seat (75) to close the ink outlet (67). The upper surface of the valve body (93) is adapted to receive the pressure in the container body (68), and when the pressure is smaller than a predetermined value, the valve body (76) is moved by the elastic force of the spring (77) to the valve seat ( 75), the ink outlet (67) is closed, and when the pressure exceeds a predetermined value, the valve body (76) moves downward against the elastic force of the spring (77), and the valve seat (75) The ink outlet (67) is opened apart downward.

  A tapered surface (96) is formed on the inner periphery of the upper end portion of the container main body (68) so that the inner diameter gradually increases as it goes upward. A positioning cylindrical portion (97) extending downward is formed on the outer peripheral edge of the bottom wall (72) of the container body (68). The outer diameter of the cylindrical portion (97) and the portion of the container body (68) slightly above it is slightly larger than the outer diameter of the portion of the container body (68) above it. A small diameter portion (97a) and a large diameter portion (97b) are formed in order from the top on the inner periphery of the cylindrical portion (97). The large-diameter portion (97b) has a tapered shape in which the inner diameter gradually increases as it goes downward. The inner diameter of the upper end portion of the large diameter portion (97b) is larger than the inner diameter of the small diameter portion (97a), and a downward annular end surface (97c) is formed therebetween. The outer diameter of the upper part of the container main body (68) is larger than the inner diameter of the annular end surface (97c) and is substantially equal to or slightly smaller than the outer diameter of the annular end surface (97c).

  On the outer peripheral surface of the portion close to the upper end of the container main body (68), a holding overhang portion (98) is formed integrally so as to protrude outward and the lower portion faces downward. In this example, the overhang portion (98) is an annular convex portion.

  The lid member (70) is formed by integrally forming a cylindrical portion (70b) extending upward on the periphery of the disc portion (70a). The lid member (70) is tightly inserted into the container body (68) through the tapered surface (96) at the upper end of the container body (68).

  Ink is stored in the container body (68), and the upper part of the container body (68) is closed by a lid member (70) inserted into the container body (68) above the ink. Initially, the upper portion of the lid member (70) is the upper surface of the tapered surface (96) of the container body (68) with the ink filled in the portion below the lid member (70) in the container body (68). It is almost the same height as the bottom.

  Usually, each container (65) contains different types of ink. When no downward pressure is applied to the lid member (70), the pressure in the container body (68) is low, and the valve (71) closes the ink outlet (67) as described above, and the ink outlet (67 ) Does not come out of the ink. When the downward pressure applied to the lid member (70) increases to some extent, the lid member (70) moves downward to compress the ink, the ink pressure increases, and the valve (71) The outlet (67) is opened and the ink falls down through the ink outlet (67).

  The container storage unit (66) includes a support member (111) extending horizontally in the left-right direction and having both ends fixed to the rear end of the frame (7) and the support base (59). The support member (111) is provided with a support column (112) extending upward, and at the top of each support column (112) is a rear side of a pair of left and right container holding members (113) made up of leaf springs constituting the container holding device. The end is fixed. The container holding member (113) has an arc shape in plan view, and forms a partial circular shape with the tip (front end) side separated as a whole. In a natural state, the pair of container holding members (113) are in a closed state in which their tips are close to each other. At this time, the diameter of a circle inscribed in the pair of container holding members (113) is the container body (68). Is smaller than the outer diameter. The pair of container holding members (113) can be opened to a state where their tips are separated from the outer diameter of the container body (68) against the elastic force. The pair of container holding members (113) sandwich the portion immediately below the overhanging portion (98) of the container main body (68) by an elastic force so as to be in close contact with the outer peripheral surface of the container main body (68) and the overhanging portion (98 ) Is received from below to hold the container (65). In this example, three sets of container holding members (113) are provided.

  A guide rail (80) extending horizontally in the front-rear direction is provided on the right side of the dam plate mounting table (60) (61) on the upper surface of the support table (59). The lower right side is guided by the guide rail (80). A roller (82) provided at the lower left part of the moving body (81) is placed on the upper surface of the left part of the frame (7). Although not shown, the moving body (81) is moved in the front-rear direction by a driving device using a ball screw or the like.

  A guide rail (83) extending horizontally in the left-right direction is provided on the upper rear surface of the first moving body (81), and the second moving body (84) is guided by the guide rail (83). Although not shown, the moving body (84) is moved in the left-right direction by a driving device using a ball screw or the like.

  The main part of the dam plate changing device (85) and the ink supply device (86) are provided in the second moving body (84).

  The weir plate exchanging device (85) is configured as follows.

  The barrier plate is positioned near the top of the original roller (3) and slightly behind the rear edge of the barrier plate (53) adsorbed on the original roller (3) and the ink fountain forming surface (37). A cover (110) also serving as a member is provided. The left and right ends of the cover (110) are fixed to the frame (7) and cover the entire upper length of the original roller (3).

  A horizontal plate-like third moving body (88) is supported on the rear surface of the second moving body (84) via an elevating device (87) using an air cylinder. A turning / opening / closing device (89) using air pressure is provided. A pair of openable and closable weir plate holding members (91) are provided at the lower end of the vertical turning shaft (90) protruding downward from the turning / opening / closing device (89). The holding member (91) is moved in the front-rear direction and the left-right direction by the movement of the first and second moving bodies (81) and (84), and is moved up and down by the raising and lowering of the third moving body (88). . The holding member (91) is turned around the vertical axis by turning the turning shaft (90) by the turning / opening / closing device (89), and is opened / closed by the turning / opening / closing device (89).

  The ink replenishing device (86) is configured as follows.

  A container holding part (114) constituting the container holding means is attached to the rear surface of the second moving body (84) via an appropriate actuator (115), and is moved up and down by the actuator (115). It has become.

  The container holding portion (114) includes a vertical plate-like intermediate support member (116) attached to the actuator (115), a bottom placement portion (117) extending rearward from the lower end portion of the support member (116), and a support A cylinder member (118) extending rearward from the upper end of the member (116), and a hermetic holding member (119) supported by the cylinder member (118) and capable of moving up and down above the bottom mounting portion (117). I have.

  A short cylindrical portion (120) protruding upward is formed on the upper surface of the bottom placement portion (117). The outer diameter of the short cylindrical portion (120) is smaller than the inner diameter of the small diameter portion (97a) of the positioning cylindrical portion (97) of the container body (68), and the short cylindrical portion (120) is inside the positioning cylindrical portion (97). It is designed to fit in. The height of the short cylindrical portion (120) is substantially equal to or slightly larger than the height of the positioning cylindrical portion (97). At the center of the short cylindrical portion (120), an opening (121) penetrating the bottom placement portion (117) vertically is formed. The opening (121) has a tapered shape in which the lower part is widened, and the inner diameter of the upper end of the opening (121) is larger than the outer diameter of the cylindrical portion (74) of the bottom wall (72) of the container body (68).

  The cylinder member (118) is provided with a cylinder section (122) having a circular horizontal section extending in the vertical direction. A circular opening (124) for holding the hermetic holding member is formed in the bottom wall (123) of the cylinder member (118) in a vertically penetrating manner and penetrates the top wall (125) of the cylinder member (118) vertically. A compressed air supply passage (126) having a circular horizontal cross section is formed. The inner diameter of the upper end of the passage (126) is considerably smaller than the other parts. A compressed air supply hose (127) is connected to the upper end of the passage (126). Although not shown, the hose (127) is connected to a compressed air supply device having a compressor or the like.

  The hermetic holding member (119) is a cylindrical block portion fitted into the opening (124) via an O-ring (128) so as to seal the opening (124) of the cylinder member (118) and slide up and down. (129), a disk-shaped piston portion (131) formed on the block portion (129) and fitted in the cylinder portion (122) through the O-ring (130) so as to be slidable up and down, The upper part of the block (129) is formed so as to project upward, and the lower part of the compressed air supply passage (126) of the cylinder member (118) is closely and vertically slid from the lower side through the O-ring (132). A cylinder-shaped compressed air intake part (133) fitted freely and an ink container (65) provided at the lower part of a block part (129) protruding downward from the cylinder member (118) and moving downward And a disc-shaped sealing portion (134) for sealing the upper opening (69) of the disc.

  The outer diameter of the sealing portion (134) is larger than that of the block portion (129), and an annular packing (135) is provided at a portion near the outer periphery of the lower surface of the sealing portion (134). The outer diameter of the upper end of the container body (68) is larger than the inner diameter of the packing (135) and smaller than the outer diameter of the packing (135).

  At the center of the hermetic holding member (119), there is formed a compressed air supply passage (136) that vertically penetrates the compressed air intake portion (133), the block portion (129), and the sealing portion (134). ), A check valve (139) using a ball (137) and a compression coil spring (138) is provided. The aforementioned compressed air supply device, hose (127), passages (126) and (136), and check valve (139) constitute compressed air supply means.

  Compressed air supply and discharge reaching the outside of the cylinder member (118) at a position above the piston portion (131) at the upper limit position of the cylinder portion (122) and a position below the piston portion (131) at the lower limit position, respectively. Passages (140) and (141) are formed, and compressed air supply and discharge hoses (142) and (143) are connected to these passages (140) and (141). Although not shown, the hoses (140) and (141) are connected to the compressed air supply device via a switching valve.

  A level sensor (101) for detecting the level of ink in the ink fountain (1) is provided at the tip of the bracket (100) fixed to the lower surface of the bottom placing portion (117). For the level sensor (101), for example, an ultrasonic sensor is used.

  The upper supply / discharge passage (140) communicates with the atmosphere and compressed air is supplied from the lower supply / discharge passage (141) into the cylinder portion (122), thereby sealing the cylinder member (118). The holding member (119) moves upward. Conversely, the lower supply / discharge passage (141) is communicated with the atmosphere, and compressed air is supplied from the upper supply / discharge passage (140) into the cylinder portion (122), so that the cylinder member (118) is provided. On the other hand, the hermetic holding member (119) moves downward.

  With the holding member (119) moved upward, the container (65) is placed on the bottom placing portion (117), and the short cylindrical portion (120) is fitted inside the positioning cylindrical portion (97). Thus, the bottom wall (72) of the container body (68) rests on the short cylindrical part (120), and the cylindrical part (74) fits inside the opening (121). In such a state, the compressed air is supplied to the upper part of the piston part (131) of the cylinder part (122) and the hermetic holding member (119) moves downward, whereby the packing (135) is moved to the container body ( The container (65) is held and the container body (68) is sealed while being pressed against the upper end of 68).

  When the container (65) is held by the container holding part (114) as described above, the container main body (68) is in a state where compressed air is not supplied from the hose (127) to the supply passages (126) (136). ) In the upper part of the lid member (70) in the inside of the container) is low, and therefore the pressure of the ink in the container body (68) is also low. For this reason, the valve (71) is closed and the ink does not come out. When compressed air is supplied to the supply passages (126) and (136), the compressed air is supplied to the portion above the lid member (70) in the container body (68) through the check valve (139), and the lid member In order to push (70) downward, the lid member (70) moves downward, compressing the ink, thereby increasing the pressure of the ink, opening the valve (71), and opening the valve (71) Through the opening (121), the ink falls downward. The ink falls on the outer peripheral surface of the original roller (3) slightly above the ink passage (52). The ink dropped on the outer peripheral surface of the original roller (3) moves to the ink passage (52) by the rotation of the original roller (3), and accumulates in the ink fountain (1). When the supply of compressed air to the supply passages (126) and (136) is stopped, the pressure in the container body (68) does not increase any more, the valve (71) is closed, and the ink does not come out.

  Before starting printing, the dam plate (53) is not attached to the original roller (3) and the ink fountain forming surface (37), and a new dam plate (53) is placed on the first dam plate mounting table (60). There are two or more. The ink supply device (86) does not hold the container (65), and the container (65) is held by the container holding member (113). The intermediate portion of the sheet (39) that is fed from the sheet roll (49) and wound around the winding member (50) is the portion of the ink fountain member (2) that is positioned at a predetermined working position. It is in close contact with the ink fountain forming surface (37). In this case, the ink fountain member (2) is positioned at the first working position, and the sheet (39) is in close contact with the first ink fountain forming surface (37a).

  From such a state, first, the barrier plate holding device (91) of the barrier plate changing device (85) holds one barrier plate (53) on the first mounting table (60), and this is used as the original roller. After adsorbing to one dam plate adsorbing portion (55) of (3) and the ink fountain forming surface (37a) corresponding thereto, the other dam plate (53) is similarly attached to the original roller (3). It is made to adsorb | suck to the other weir board adsorption | suction part (55) and the ink fountain formation surface (37a) corresponding to this.

  Next, while moving the container holding part (114) downward and moving the hermetic holding member (119) upward, the ink replenishing device (86) performs the desired container (66) of the container storage part (66). 65), the container is moved to the rear, and the container (65) is positioned between the bottom placing portion (117) and the hermetic holding member (119) as shown in FIG. 7 (b). Next, the container holding part (114) is moved upward, the container (65) is lifted by the bottom mounting part (117), and the overhanging part (98) of the container (65) is slightly above the holding member (113). Stop at a position far away. Next, the hermetic holding member (119) is moved downward to hold and hermetically seal the container (65) as shown in FIG. 7 (a).

  If the container (65) is held by the container holding part (114), the ink replenishing device (86) moves forward from the container holding member (113) and above the ink fountain (1). When the ink supply device (86) is separated from the container holding member (113), the container holding member (113) is pushed by the container (65) held by the container holding portion (114) and then once opened, Close away from 65). When the ink supply device (86) holding the container (65) moves above the ink fountain (1), only the original roller (3) is rotated and all the ink transfer rollers (15) are moved to the rear end. In the state where the ink supply device (86) is switched to the position, the ink supply device (86) is reciprocated left and right to supply ink into the ink fountain (1) to a certain level. At this time, the ink level in the ink fountain (1) is lowered so that a small amount of ink accumulates only in a small portion near the ink passage (52).

  When a certain amount of ink has accumulated in the ink fountain (1), the kneading roller (4) and other rollers are also rotated to control the switching of the position of the ink transfer roller (15). To print.

  During printing, the ink supply device (86) is moved left and right to replenish ink in the ink fountain (1), thereby maintaining the ink level in the ink fountain (1) almost constant and the ink path. A small amount of ink should be collected only in a small part near (52). Further, when an abnormality in switching the position of the ink transfer roller (15) is detected by the output of the position switching detection sensor (102), an alarm is issued and the operation is stopped.

  When printing is completed and printing is then performed using a different ink, the setup change operation is performed as follows, for example.

  When printing is completed, the ink supply device (86) first moves to the front of the original container holding member (113) that is empty in the container storage section (66), and then moves backward to move the container. The ink container (65) is returned to the holding member (113). When the ink supply device (86) moves rearward, the tip of the pair of container holding portions (113) hits the container (65), and the container holding member (113) is pushed and spread, and then the container holding member (113) Close and close contact with the outer peripheral surface of the container body (68). At this time, as shown in FIG. 7 (a), the projecting portion (98) of the container (65) is positioned slightly above the container holding member (113). In such a state, first, only the hermetic holding member (119) moves upward and leaves the container (65) upward, and then the entire container holding part (114) moves downward. When the container holding part (114) moves downward to some extent, the overhanging part (98) of the container (65) hits the upper edge of the container holding member (113) and stops and is held. Even after the container (65) is held by the container holding member (113) and stopped, the container holding part (114) is provided with a short cylindrical part (117) of the bottom placing part (117) as shown in FIG. 120) moves downward to a position where it comes out from the positioning cylindrical portion (97) of the container body (68) and stops. The ink supply device (86) moves away from the container (65) held by the container holding member (113) and moves forward.

  On the other hand, all the ink transfer rollers (15) are switched to the rear end position, separated from the original roller (3), the ink recovery tank (56) is switched to the scraping position, and the blade (57) is moved to the original roller (3). In this state, the original roller (3) is rotated. As a result, the ink remaining in the ink fountain (1) passes through the ink passage (52) to the outer peripheral surface of the original roller (3) in the same way as during printing, but this ink is scraped off by the blade (57). And collected in the tank (56). If all the ink remaining in the ink fountain (1) is taken out by the original roller (3) and collected in the tank (56) by the blade (57), the original roller (3) is left as it is for a while. Rotate. As a result, the ink remaining on the outer peripheral surface of the original roller (3) is almost scraped off by the blade (57) .After that, the tank (56) is switched to the standby position, and the blade (57) is moved to the original roller (3 ) To stop the original roller (3).

  When the original roller (3) is stopped, the ink fountain member (2) is rotated counterclockwise. When the ink fountain member (2) rotates, the ink fountain forming surface adsorbing portion (53a) of the dam plate (53) is detached from the ink fountain forming surface (37a), and the dam plate (53) is moved back to the original position. It rotates counterclockwise with the original roller (3) while being attracted to the roller (3), but immediately hits the cover (110) to be stopped. When the ink fountain member (2) further rotates, the barrier plate (53) rotates around the contact portion with the cover (110), and the ink original roller suction portion (53b) becomes the original roller ( Detach from the outer peripheral surface of 3). The ink fountain member (2) stops in a state where the weir plate (53) is detached from both the ink fountain member (2) and the original roller (3) and rests on them. If the ink fountain member (2) stops, the dam plate holding member (91) of the dam plate changer (85) holds one dam plate (53), and the ink fountain member (2) and the original roller (3 ) And then moved to the second mounting table (61). Similarly, the other dam plate (53) is removed and transferred to the second mounting table (61).

  The ink transferred to the ink transfer roller (15) is transferred to the kneading roller (4) and other rollers by the rotation of the kneading roller (4), and remains on the outer peripheral surface of these rollers (15) (4). Less ink is used. Then, the ink transfer roller (15), the kneading roller (4) and other rollers are automatically cleaned as in the conventional case. At this time, if necessary, the cleaning liquid for automatic cleaning is transferred from the kneading roller (4) side to the original roller (3) by switching the position of the ink transfer roller (15) in any state of FIG. Thus, the outer peripheral surface of the original roller (3) can be automatically cleaned.

  If the two barrier plates (53) are removed from between the ink fountain member (2) and the original roller (3), the sheet moving device (40) removes a sheet (39) of a predetermined length from the sheet roll (49). ) And is wound around the winding member (50). Then, the ink fountain member (2) is positioned at the working position for the next printing and stopped. As a result, the part of the used sheet (39) that is in close contact with the ink fountain forming surface (37a) during printing and the old ink is attached moves to a position off the ink fountain forming surface (37), The part of the new sheet (39) before use adheres to the ink fountain forming surface (37).

  Thereafter, the next printing is performed in the same manner as described above.

  FIG. 11 shows a modification of the ink fountain member.

  In this case, the ink fountain member (104) has, for example, a quadrangular prism shape with a square cross section, is positioned at four work positions every 90 degrees, and is fixed at each work position. The four sides around the ink fountain member (104) are the ink fountain forming surfaces (105a) (105b) (105c) (105d), and the counterclockwise direction of each ink forming surface (105a) to (105d) The ridge lines at the ends of these are ink passage forming portions (106a) (106b) (106c) (106d) corresponding to the ink forming surfaces (105a) to (105d).

  Others are the same as the case of the said embodiment, and the same code | symbol is attached | subjected to the same part.

  FIG. 12 shows another modification of the ink fountain member.

  In this case, the ink fountain member (107) has, for example, a triangular prism shape with a right-angled cross section, and is positioned and fixed only at one working position. The rear surface of the ink fountain member (107) that faces diagonally upward is the ink fountain forming surface (108), and the ridge line of the rear end (lower end) of the ink fountain forming surface (108) is the ink passage forming portion (109). ing. Further, when replacing the barrier plate (53), the ink fountain member (107) is rotated counterclockwise from the working position, and is returned to the working position after the barrier plate (53) is removed as described above. It is like that.

  Others are the same as the case of the said embodiment, and the same code | symbol is attached | subjected to the same part.

  As shown in FIGS. 13 and 14, the ink container (65) accommodates the upper end of the lower container (65) container body (68) with the upper container (65) in a state of containing ink. The cylindrical portion for positioning (97) can be placed inside the large-diameter portion (97b) and stacked and stored in a state where the cylindrical portion (97c) is applied to the annular step portion (97c) from below.

  When the ink in the ink container (65) runs out, remove the lid member (70) from the container body (68), put new ink in the container body (68), and place the lid member (70) on it. By inserting, ink can be refilled easily.

  15 to 17 show modifications of the ink container (65). In these drawings, the same parts as those in the above embodiment are denoted by the same reference numerals.

  In this container (65), an ink supply hose (151) can be connected to the cylindrical portion (74) of the bottom wall (72) of the container main body (68) via the connector (150).

  The connector (150) has a stepped cylindrical shape, and a hose connection part (152) having a smaller outer diameter than the upper part is formed in the lower part of the connector (150), and the tip of the hose (151) is formed in this connection part (152). Parts are connected. A stopper (153) is formed on the outer peripheral surface of the connecting portion (152). On the inner periphery of the connector (150), a large diameter portion (154) and a small diameter portion (155) are formed in order from the top. The inner diameter of the large diameter portion (154) is slightly larger than the outer diameter of the cylindrical portion (74) of the container (65), and the height of the large diameter portion (154) is slightly smaller than that of the cylindrical portion (74). The inner diameter of the small diameter portion (155) is larger than the outer diameter of the valve body (92), and the height of the small diameter portion (155) is larger than the maximum protrusion amount of the valve body (92) from the lower surface of the cylindrical portion (74). Protrusions (156) projecting inward are formed at two symmetrical locations near the lower end of the inner peripheral surface of the large diameter portion (154).

  Connector locking bent grooves (157) are formed at two symmetrical positions on the lower part of the outer peripheral surface of the cylindrical portion (74) of the container (65). The two grooves (157) are line-symmetric with respect to the axis of the cylindrical portion (74), the vertical portion (157a) extends upward from the lower surface of the cylindrical portion (74), and the circumferential direction from the upper end of the vertical portion (157a). And a horizontal portion (157b) extending horizontally.

  The upper part of the connector (150) to which the hose (151) is connected is fitted to the outside of the cylindrical part (74) of the container (65) from the lower side, and first, the protrusion (156) is vertically aligned with the vertical part (157a) of the groove (157). When the horizontal portion (157b) is reached, the connector (150) is rotated, and the projection (156) is moved to the distal end side of the horizontal portion (157b), so that the connector (150 ) Is locked to the cylindrical portion (74), and the hose (151) is connected to the container (65).

  The connector (150) and the hose (151) can be removed from the container (65) by the reverse operation to the above.

  The container holding section (114) of the container supply device (86) can hold the container (65) and supply ink.

  In that case, the container holding part (114) may be placed in one place. The container (65) is manually placed on the bottom mounting portion (117), and is held and sealed in the same manner as described above. The connector (150) and the hose (151) are connected to the container (65) through the opening (121) of the bottom mounting portion (117). In the same manner as described above, ink can be supplied to a desired location through the valve (71) and the hose (151).

  Of course, this container (65) can also be used for the above-mentioned printing press.

  The overall configuration of the printing press, the ink replenishing device, and the ink container and the configuration of each unit are not limited to those of the above-described embodiment, and can be changed as appropriate.

FIG. 1 is a schematic side view of a main part of an ink supply device of a printing press. FIG. 2 is a plan view of FIG. FIG. 3 is a partially cutaway plan view of a portion of the ink transfer division / division roller unit. 4 is a cross-sectional view of FIG. FIG. 5 is an enlarged side view showing a part of FIG. FIG. 6 is a longitudinal sectional view showing portions of the ink container and the ink supply device. FIG. 7 is a side view showing portions of the ink container and the ink supply device. FIG. 8 is an enlarged longitudinal sectional view showing the bottom of the ink container. FIG. 9 is an enlarged cross-sectional view of the dam plate mounting table. FIG. 10 is a side view showing the operation of the barrier plate replacement device. FIG. 11 is a drawing corresponding to FIG. 5 showing a modification of the ink fountain member. FIG. 12 is a drawing corresponding to FIG. 5 and showing another modified example of the ink fountain member. FIG. 13 is a longitudinal sectional view showing an example of the storage state of the ink container. FIG. 14 is an enlarged longitudinal sectional view showing a part of FIG. FIG. 15 is a perspective view of the bottom of the ink container and the connector showing a modification of the ink container. 16 is a longitudinal sectional view showing the bottom of the ink container of FIG. 17 is a cross-sectional view taken along line XVII-XVII in FIG.

(1) Inkwell
(3) Ink base roller
(4) Ink kneading roller
(37a) (37b) (37c) Ink fountain forming surface
(52) Ink passage
(65) Ink container
(66) Container storage
(67) Ink outlet
(68) Container body
(69) Opening
(70) Piston combined lid member
(71) Valve
(73) Opening
(74) Cylindrical part
(76) Valve member
(77) Spring
(86) Ink supply device
(97) Cylindrical part for positioning
(97a) Small diameter part
(97b) Taper
(97c) Annular end face
(98) Overhang for container holding
(101) Level sensor
(114) Container holder
(117) Bottom mounting part
(118) Cylinder member
(119) Upper sealing member
(120) Short cylindrical part for positioning
(121) Opening
(122) Cylinder
(124) Upper airtight holding member holding opening
(126) Compressed air supply passage
(127) Compressed air supply hose
(129) Block part
(131) Piston part
(133) Compressed air intake
(134) Sealed part
(136) Compressed air supply passage
(137) Check valve
(140) (141) Compressed air supply / discharge passage

Claims (4)

An ink fountain member having an ink fountain forming surface for forming an ink fountain;
An ink fountain roller that ejects ink to the outer peripheral surface through an ink passage between the ink fountain member,
A plurality of rollers for supplying ink to the printing portion on the outer peripheral surface of the ink source roller;
A plurality of ink containers in which different types of ink are stored and stored in a predetermined container storage unit;
An ink replenishing device that holds a desired ink container and replenishes the ink fountain with ink therein;
A printing machine comprising an ink storage unit provided with a plurality of sets of ink holding devices,
Each ink container has a cylindrical container body with an opening at the top and an ink outlet at the bottom, and a piston that is tightly inserted into the container body from the top opening so that it can move up and down in a sealed state a combined lid member, and a valve for opening and closing the ink outlet, the valve, during the pressure in the container body is lower closed state, and are not opened by a pressure increase in the container body,
On the outer peripheral surface of the container body, there is formed an overhanging portion for extending outward and the lower portion facing downward,
Each ink holding device of the ink storage part is an arc-like shape in plan view that holds the container by opening and closing by elastic force and closely contacting the lower outer peripheral surface of the holding part of the container body, and the tip side is separated as a whole A printing machine comprising a pair of container holding members each having a circular leaf spring shape . The ink replenishing device has a level sensor that detects the ink level in the ink fountain, detects the ink level in the ink fountain during the printing operation, and the portion of the ink fountain where the ink level is lower than the predetermined value printing machine according to claim 1, characterized in that is adapted to replenish the ink. The printing press according to claim 1 or 2, wherein the overhanging portion for holding the ink container is an annular convex portion integrally formed on the outer peripheral surface of the container main body. The ink replenishing device has an ink container holding means for holding the ink container in a state where the upper opening of the ink container is sealed, and a compressed air supply for supplying compressed air to a portion above the piston / lid member in the held ink container. Means and
  The ink container holding means seals the top opening of the ink container by sealing the top opening of the ink container when the ink container holding means is provided so as to be movable up and down above the bottom part mounting part. And a sealed holding member for holding the container at the mounting portion, and the compressed air supply means supplies compressed air into the ink container through a check valve provided inside the sealed holding member. The printing press according to any one of claims 1 to 3, characterized in that:

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