TW201345735A - Printing device and method for changing printing cylinder thereof - Google Patents

Abstract

The object of the present invention is to provide a printing device and a method for changing a printing cylinder thereof which shorten stopping period of changing a printing cylinder of printing device and efficiency is improved. The solution means of the present invention comprises a printing cylinder 31 including a key groove 31b and a register mark 31c. The printing cylinder 31 is delivered on and off as respect to a printing unit by a car truck. The printing unit comprises a printing cylinder delivery mechanism 4 for delivering the printing cylinder 31 between two-side frames and the car truck, and a key groove detection mechanism 60 for detecting a position where the key groove 31b of the printing cylinder 31 is existed. The car truck comprises a printing cylinder rotary part 50 for rotating a printing cylinder 31 around the periphery of axis to make the resister mark 31c is located on a predetermined position. A control panel 7 calculates an angle around the periphery of axis between the key groove 31b and the resister mark 31c.

Description

Printing device and printing plate roll replacing method thereof

The present invention relates to a printing apparatus and a printing cylinder replacing method thereof, the printing apparatus comprising a printing unit having a printing plate cylinder supported thereon, the printing apparatus being attached to the printing plate roller The ink on the outer peripheral surface of the cylinder is transferred to the substrate to perform printing.

Heretofore, the ordinary printing apparatus is attached to the outer peripheral surface of the plate cylinder by a rotation operation in a state in which the rotatable printing plate cylinder is supported by the printing unit with respect to the substrate (hereinafter referred to as symbol positioning). The ink is transferred to the substrate to perform printing.

The plate cylinder is provided with a key groove for inserting a key on a fixed side of the unit of the printing unit, and when the plate cylinder is replaced, the plate roller and the above are inserted by inserting the key into the key groove. The unit fixing side of the printing unit is positioned to mount the above-described plate cylinder on the unit fixing side of the printing unit.

In recent years, what is required is an efficient printing apparatus capable of shortening the preparation time before printing as much as possible. For example, in the printing apparatus disclosed in Patent Document 1, a pallet for transporting the plate cylinder onto the printing unit and removing the plate cylinder from the printing unit is provided. Designed on the above printing unit A plate cylinder delivery mechanism for transferring the plate cylinder between the unit fixing side and the pallet and a keyway position detecting mechanism for detecting the position of the key groove are provided. The plate cylinder delivery mechanism is mounted to enable the plate cylinder to rotate about the axis, and is inspected on the side of the unit to which the plate cylinder is delivered from the pallet to the printing unit. The keyway position information is such that the plate cylinder is rotated so that the key groove corresponds to the key, so that the plate cylinder loaded and transferred to the pallet can be automatically mounted on the printing unit.

However, according to the invention disclosed in Patent Document 1, since the plate roller is attached to the unit fixed side of the printing unit, it is not known that the mark which is the reference position of the printing pattern formed on the outer peripheral surface of the plate cylinder is relatively At the position of the keyway, for example, the operator needs to manually position the plate cylinder, which is cumbersome.

In order to solve the above problem, the invention of the printing apparatus disclosed in Patent Document 2 is as follows: A marking position detecting mechanism that detects the position of the symbol is provided in the printing apparatus. After the plate cylinder is mounted on the unit fixing side of the printing unit, the mark position detecting mechanism detects the position of the mark relative to the key groove, and then performs control by the control device, according to the position of the detected mark and the plate roller. The equal size data calculates the angle of rotation used to position the printing unit.

Patent Document 1: Japanese Laid-Open Patent Publication No. Hei 8-108517 (paragraphs 0015 to 0018, Fig. 1)

Patent Document 2: Japanese Laid-Open Patent Publication No. 2003-266645 (paragraphs 0026 to 0029, FIG. 3)

However, according to the invention disclosed in Patent Document 2, after the plate cylinder is mounted on the printing unit, it is necessary to sequentially perform the operation of detecting the mark position, calculate the rotation angle for positioning the printing unit, and make the plate roller. Since the cylinder rotates the above-described rotation angle, even if the plate cylinder is attached to the printing unit, the printing operation cannot be performed immediately, and the stop time of the printing apparatus increases, resulting in poor efficiency.

The present invention has been accomplished in view of the above problems. It is an object of the invention to provide a printing apparatus having a short stopping time of a printing apparatus when the printing plate cylinder is replaced and which is efficient, and a method for replacing the printing plate roll.

1‧‧‧Printing device

2‧‧‧Printing unit

2a‧‧‧Lead straight frame (unit fixed side)

4‧‧‧ Plate roll transfer mechanism (print plate roll transfer means)

5‧‧‧ cart

6‧‧‧ Non-contact sensors

7‧‧‧Control panel (control means)

7a‧‧‧Memory Department

7b‧‧‧ Calculation Department

13‧‧‧ Cart positioning method

31‧‧‧Printing plate roller

31b‧‧‧ keyway

31c‧‧‧ Registration mark (virtual reference mark)

32a‧‧‧Support shaft

32b‧‧‧ key

38‧‧‧Cylindrical bushing

40‧‧‧ Lifting Department

48c‧‧‧ hook parts

50‧‧‧Printing plate rotating part

51‧‧‧ main frame

52d‧‧‧Connected parts

54‧‧‧Sliding frame

56‧‧ ‧ mark location means

56c‧‧‧ pole

57‧‧‧ Plate roller positioning mechanism (plate roller positioning method)

57a‧‧‧ Positioning board

57h‧‧‧torsion spring (forced part of the positioning plate)

57i‧‧‧Marking parts

57k‧‧‧ skateboarding

60‧‧‧Keyway position detection mechanism (keyway position detection means)

Fig. 1 is a schematic structural view of a printing apparatus of a first embodiment.

Figure 2 is a schematic diagram of the structure of the printing unit.

Figure 3 is a cross-sectional view taken along line A-A of Figure 2 .

4(a) and 4(b) are enlarged cross-sectional views of the support shaft taken along line BB of Fig. 3, Fig. 4(a) shows a state in which the cylindrical sleeve is extended, and Fig. 4(b) shows a cylindrical shape. The state in which the sleeve is retracted.

Fig. 5 is a plan view showing the cart in a state in which the slide frame is slid toward the front of the cart.

Fig. 6 is a plan view showing the cart in a state in which the slide frame is slid toward the rear of the cart.

Fig. 7(a) is a view seen in the direction of arrow C in Fig. 5, Fig. 7(b) is a view seen in the direction of arrow D in Fig. 6, and Fig. 7(c) is taken along Fig. 7 ( a) A cross-sectional view of the E-E line in the section.

8(a) and 8(b) are cross-sectional views taken along line FF of Fig. 5, Fig. 8(a) shows a positioning plate in a normal state, and Fig. 8(b) shows that the plate cylinder has been contacted from above. Positioning plate in the state of the positioning plate.

Fig. 9 is an enlarged view of a portion G in Fig. 2.

Figure 10 is a block diagram showing the structure of a printing apparatus.

Figure 11 is a diagram showing the state in the middle of pushing the cart under the printing unit.

Figure 12 is a diagram showing a state in which the cart has been positioned relative to the printing unit.

Figure 13 is a view showing a state before the plate cylinder is to be delivered from the cart to the printing unit.

Fig. 14 is a view showing a state in the middle of the fixed side of the unit for feeding the plate cylinder from the cart to the printing unit.

Fig. 15 is a view showing a state immediately after the plate cylinder is delivered from the cart to the fixed side of the unit of the printing unit.

Figure 16 (a) to (g) show a schematic view of the transfer of the plate cylinder between the cart and the printing unit, and Figure 16 (a) shows that the virtual reference mark of the plate cylinder is set on the cart in advance. The state at the position, FIG. 16(b) shows the state in which the cart has just been pushed under the printing unit, and FIG. 16(c) shows the state in which the keyway position of the plate cylinder will be detected; FIG. 16(d) shows that the state is being detected. The state of the keyway position of the plate cylinder, Fig. 16(e) shows a state in which the plate cylinder is rotated so that the key groove of the plate cylinder is located at the upper end of the plate cylinder, and Fig. 16(f) shows that the plate roller is about to be used. The state before the cylinder is handed to the fixed unit of the printing unit, as shown in Fig. 16(g) The state in which the plate cylinder has just been handed over to the unit on which the unit of the printing unit is fixed.

Fig. 17 is a schematic view showing a state immediately before positioning of the printing apparatus, showing the positional relationship of the respective constituent portions of the two printing units on the upstream side.

Fig. 18 is a schematic view showing a state immediately before positioning of the printing apparatus, showing the positional relationship of the respective constituent parts of the two printing units on the downstream side.

Fig. 19 is a schematic view showing a state immediately after the positioning of the printing apparatus is completed.

Fig. 20 is a view corresponding to Fig. 1 of the second embodiment.

- Technical solutions to solve technical problems -

In order to achieve the above object, in the present invention, in the cart in which the plate cylinder is moved up and down, the mark provided on the outer peripheral surface of the plate cylinder is placed at a predetermined position.

That is, the invention of the first aspect is a printing apparatus including a printing unit, a cart, and a control means, the plate cylinder having a key groove in the printing unit is inserted into the keyway by a key that fixes the unit side Positioning, the printing plate cylinder of the printing unit is rotatably supported by the fixed side of the unit, and the cart moves the printing plate cylinder onto the printing unit or removes the printing plate roller from the printing unit The control means is coupled to the printing unit to control the rotation of the plate cylinder. The printing unit includes a plate roller delivery means and a keyway position detecting means for loading the plate cylinder by the plate roller so as to be rotatable about the axis, on the unit fixing side and the pushing The plate cylinder is transferred between the cars, and the keyway position detecting means detects the position of the key groove on the plate cylinder. A mark for aligning the printed pattern is printed on the above-described plate cylinder. The cart has a mark positioning means for loading the plate cylinder by placing the mark at a predetermined position. The control means includes a memory unit and a calculation unit, wherein the memory unit stores therein the mark position data of the plate cylinder loaded on the cart, and the calculation unit is based on the key groove position detected by the keyway position detecting means and is stored in the above The symbol position data of the memory unit calculates the position of the symbol relative to the keyway on the plate cylinder, and the control means is configured to: control the plate roller delivery means to rotate the plate cylinder to make the keyway and the Corresponding to the key, the plate cylinder is rotatably supported by the unit fixing side of the printing unit.

In the second aspect of the invention, in the first aspect of the invention, the printing unit is provided in parallel with a plurality of the printing units. Each of the above printing units is provided with one of the above carts. The mark printed on the above plate cylinder is a reference mark. The memory unit stores a distance L between the transfer positions of the two printing units in the printing unit and the transfer position of the printing medium, and a radius r of the printing plate cylinder. The calculation unit calculates the angles θ 1 and θ 2 formed by the key groove and the reference mark in the upstream side plate cylinder and the downstream side plate cylinder of the two printing units in the plurality of printing units. Coming out, the rotation angle θ 3 for symbolizing the downstream side plate cylinder with respect to the upstream side plate cylinder is calculated by the following formula (1), θ 3 = 2 (n+1) ) π + θ 1- θ 2-L/r (n is an integer) (1)

The control means is configured to control the plate roller delivery means to rotate the downstream side plate cylinder by the rotation angle θ3 with respect to the upstream side plate cylinder.

According to a third aspect of the invention, in the second aspect of the invention, the cart has a lever, and the lower end of the lever is supported by the lever to be swingable in the up and down direction, and the upper end of the lever is oscillated and loaded A portion of the outer circumferential surface of the above-described plate cylinder corresponding to the reference mark is in contact.

According to a fourth aspect of the invention, in the second or third aspect of the invention, the cart moves the plate cylinder to a lower portion of each of the printing units or the plate cylinder from each of the printing units Move down the lower part. The plate roller delivery means includes a lifting portion that supports the plate cylinder from below to raise and lower the plate cylinder, and the plate roller delivery means is configured to: at the lower end of the lifting portion at the plate roller Transferring the plate roller between the cartridge delivery means and the cart, and transferring the above-mentioned plate at the rising end position of the lifting portion between the plate roller delivery means and the unit fixing side of each of the printing units Plate roller.

According to a fifth aspect of the invention, in the fourth aspect of the invention, the lifting portion is configured such that the lifting portion is placed on the cart in a state in which the cart is pushed under each of the printing units. Below the plate cylinder, the plate cylinder is picked up from the cart and the plate cylinder is raised as it rises. On the other hand, when descending, the plate cylinder which has been passed from the unit fixing side of each of the above printing units is handed over to the above-mentioned cart.

According to a sixth aspect of the invention, in the fourth aspect of the invention, the keyway position detecting means includes: detecting a non-contact sensor of the keyway from one end of the axial direction of the plate cylinder and detecting the plate cylinder Rotation An angle of rotation detecting portion. The keyway position detecting means is configured such that the plate cylinder position detecting means rotates the axis around the axis from the state in which the reference mark is at the predetermined position, and rotates until the non-contact sensor detects The rotation angle detecting unit detects the rotation angle from the key groove, thereby detecting the position of the key groove with respect to the reference mark.

In the seventh aspect of the invention, in the invention of the first aspect, the printing unit is provided in parallel with a plurality of the printing units. Each of the above printing units is provided with one of the above carts. The mark printed on the above-mentioned plate cylinder is a virtual reference mark printed on the upstream side of the printing unit facing the downstream of the printing unit disposed side by side with respect to the true reference position for aligning the printed pattern. The side plate rollers are increased or decreased one by one at a predetermined angle. The memory portion memorizes a distance L between the transfer positions of the two printing units in the plurality of printing units to the substrate and a radius r of the plate cylinder. The calculation unit divides an angle θ 1 , θ 2 around the axis between the key groove and the virtual reference mark in the upstream side plate cylinder and the downstream side plate cylinder of the two printing units in the plurality of printing units. Calculated separately, the rotation angle θ 3 for symbolizing the downstream side plate cylinder with respect to the upstream side plate cylinder is calculated by the following formula (1), θ 3 = 2 (n) +1) π + θ 1- θ 2-L/r+ θ α (n is an integer) (1)

The control means is configured to control the plate roller delivery means to rotate the downstream side plate cylinder by the rotation angle θ3 with respect to the upstream side plate cylinder.

According to a sixth aspect of the invention, in the seventh aspect of the invention, the cart has a lever, and the lower end of the lever is supported by the lever to be swingable in the up and down direction, and the upper end of the lever is oscillated and loaded A portion of the outer peripheral surface of the above-described plate cylinder corresponding to the virtual reference mark is in contact.

According to a ninth aspect of the invention, in the seventh or eighth aspect, the cart moves the plate cylinder to a lower portion of each of the printing units or the plate cylinder from each of the printing units Move down the lower part. The plate roller delivery means includes a lifting portion that supports the plate cylinder from below to raise and lower the plate cylinder, and the plate roller delivery means is configured to: at the lower end of the lifting portion at the plate roller Transferring the plate roller between the cartridge delivery means and the cart, and transferring the above-mentioned plate at the rising end position of the lifting portion between the plate roller delivery means and the unit fixing side of each of the printing units Plate roller.

According to a tenth aspect of the invention, in the ninth aspect, the elevating portion is configured such that the elevating portion is placed on the cart in a state where the cart is pushed under each of the printing units. Below the plate cylinder, the plate cylinder is picked up from the cart and the plate cylinder is raised as it rises. On the other hand, when descending, the plate cylinder which has been passed from the unit fixing side of each of the above printing units is handed over to the above-mentioned cart.

According to a tenth aspect of the invention, in the ninth aspect of the invention, the keyway position detecting means includes: a non-contact sensor that detects the key groove from one end of the plate cylinder in the axial direction and detects the plate roller A rotation angle detecting portion of the rotation angle of the cylinder. The above keyway position detecting means constitutes In the keyway position detecting means, the plate cylinder is rotated about the axis from the state in which the virtual reference mark is at the predetermined position, and is rotated until the non-contact sensor detects the keyway. The rotation angle detecting unit detects a rotation angle, thereby detecting a position of the key groove with respect to the virtual reference mark.

According to a twelfth aspect of the invention, in the sixth or tenth aspect of the invention, the non-contact sensor is provided at an intermediate portion of the printing unit in the vertical direction and on a side of the printing unit.

According to a thirteenth aspect of the invention, in the first aspect of the invention, on the unit fixing side of each of the printing units, the pair of support shafts can advance and retreat at both end portions of the plate cylinder in the axial direction. The cylindrical sleeves for arranging the respective support shafts are disposed opposite to each other, and the pair of support shafts are joined to both end portions of the plate cylinder in the axial direction in the entering state to support the plate roller. cylinder. On the other hand, the pair of support shafts are separated from both end portions of the plate cylinder in the axial direction in the retracted state, and the plate cylinder is detached from the unit fixing side of each of the printing units. The support shaft is configured such that both ends of the plate cylinder in the axial direction and the cylindrical shaft are retracted when the support shaft is retracted in a state of being joined to both end portions of the plate cylinder in the axial direction. The projecting end contact of the sleeve releases the engagement with both end portions of the plate cylinder in the axial direction.

According to a fourteenth aspect of the invention, in the thirteenth aspect of the invention, the cylindrical sleeve is configured to be adjustable in length in an axial direction of the plate cylinder.

The fifteenth aspect of the invention is such that, in the invention of the first aspect, the above The cart includes a cart positioning mechanism and a plate roller positioning means. Using the interlocking action of the cart positioning mechanism and the fixed side of the unit, the cart that is inserted from the side below the printing plate mounting position on the printing unit is positioned without moving under the printing plate mounting position. . The plate roller positioning means is arranged to be movable in a forward and backward direction of the cart, and the plate roller positioning means contacts the end portion of the plate cylinder with the plate roller positioning means for various plates of different lengths The roller is positioned so that the plate cylinder on the cart can be mounted on the printing unit when the cart enters the mounting position of the plate cylinder.

According to a sixteenth aspect of the invention, in the fifteenth aspect of the invention, the cart includes a main frame and a slide frame, the main frame constituting a skeleton of the cart, and the slide frame is disposed at an upper portion of the main frame. It can slide in the forward and backward direction of the cart for loading the above-mentioned plate cylinder. The positioning of the plate cylinder by the above-described plate cylinder positioning means is performed in a state in which the above-described slide frame has been slid toward the cart entry direction with respect to the main frame.

According to a seventeenth or sixteenth aspect, in the invention of the fifteenth or sixteenth aspect, the plate roller positioning means includes: a marking member, a slider, and a positioning plate, the marking member extending in a direction in which the cart advances and retracts, And a mark is respectively printed at positions corresponding to the ends of the loaded various plate cylinders, the slide plate is slidable along the marking member, and the positioning plate is disposed on the sliding plate to enable the loading of the printing plate cylinder The end of the plate cylinder contacts the positioning plate.

According to a seventeenth aspect of the invention, in the seventeenth aspect of the invention, in a state in which the positioning plate is biased upward by a biasing member of the plate, one end of the positioning plate is pivotally supported by the Skateboarding.

According to a nineteenth aspect of the invention, in the fifteenth aspect of the invention, the linkage operation between the cart positioning mechanism and the unit fixing side is an engagement operation.

According to a twelfth aspect of the invention, in the nineteenth aspect of the invention, the engaging operation is performed by the hook member and the engaged member. The hook member is disposed on one of the cart positioning mechanism and the unit fixing side, and the biasing member of the hook member biases the hook member to rotate. The member to be joined is provided on the other of the cart positioning mechanism and the unit fixing side, and the engaged member pushes the hook member by an entering operation of the cart toward the lower side of the mounting position of the plate cylinder. The hook member is rotationally engaged against the force applied by the biasing member of the hook member.

The invention of the twentieth aspect is a method of replacing a plate cylinder of a printing apparatus. Loading the plate cylinder on the cart, the mark for aligning the printing pattern is at a predetermined position, and then, after the printing plate unit rotatably supported by the printing unit is detached from the printing unit, the above Pushing the cart under the printing unit, and then detecting the keyway of the plate cylinder by transferring the plate cylinder from the cart to the fixed side of the unit of the printing unit by means of a plate roller delivery means Positioning, and calculating, by the control means, the position and the mark of the keyway on the plate cylinder according to the size information of the plate cylinder and the mark position data of the plate cylinder loaded on the cart a predetermined angle, after which the plate cylinder is rotated by the plate roller delivery means so that the key groove corresponds to a key on the unit fixing side of the printing unit, and the key is inserted into the key groove After positioning the above-described plate cylinder, the plate cylinder can be rotated by the unit fixing side of the printing unit.

According to a twenty-second aspect of the invention, in the twentieth aspect of the invention, the mark printed on the plate cylinder is a reference mark, and the reference mark is placed at a predetermined position to press the plate roll. Loading the cartridge on the cart such that the cart is in standby with respect to each of the plurality of printing units, wherein the transfer means is between the transfer positions of the substrates of the two printing units of the plurality of printing units a distance L, a radius r of the above-mentioned plate cylinder, and a reference mark position data of the plate cylinder loaded on the cart, and an upstream side plate cylinder and a downstream side of the two printing units of the plurality of printing units The angles θ 1 and θ 2 formed by the key groove position and the reference mark on the plate cylinder are calculated respectively around the axis, and are used to be relative to the upstream side plate roller as shown in the following formula (1). The cylinder calculates the rotation angle θ 3 of the downstream side plate roller mark positioning, θ 3=2(n+1) π + θ 1- θ 2-L/r (n is an integer) (1)

After the unit fixing side of each of the printing units is supported to rotate the printing plate cylinder, the downstream side plate cylinder is rotated by the rotation angle θ 3 with respect to the upstream side plate cylinder.

According to a twenty-third aspect of the invention, in the twentieth aspect of the invention, the mark printed on the plate cylinder is a virtual reference mark printed on the printing pattern relative to the printing pattern. The true reference position is at a position where the upstream side of the printing unit of the printing unit is increased or decreased toward the downstream side of the printing plate by a predetermined angle, so that the virtual reference mark is at a predetermined position. Loading the plate cylinder on the cart, the tray is standby with respect to each of the plurality of printing units, and the pair of substrates of the plurality of printing units in the plurality of printing units are controlled by the control means a distance L between the transfer positions, a radius r of the above-described plate cylinder, a virtual reference mark position data of the plate cylinder loaded on the cart, and an upstream side plate for aligning the print pattern The roller replenishes the downstream side plate cylinder at a reference position on the true reference position by an angle θ α, and the upstream side plate cylinder and the downstream side plate roller of the two printing units in the plurality of printing units The angles θ 1 and θ 2 around the axis between the keyway position and the virtual reference mark are respectively calculated, and are used to the downstream side with respect to the upstream side plate cylinder according to the following formula (1). The rotation angle θ 3 of the plate cylinder for symbol positioning is calculated, θ 3=2(n+1) π + θ 1- θ 2-L/r+ θ α (n is an integer) (1)

After the unit fixing side of each of the printing units is supported to rotate the printing plate cylinder, the downstream side plate cylinder is rotated by the rotation angle θ 3 with respect to the upstream side plate cylinder.

- Effect of invention -

According to the first and twentieth aspects of the invention, since the mark position data necessary for knowing the position of the mark with respect to the key groove can be obtained in advance in a state where the plate cylinder is loaded on the cart, the replacement mark is printed. When the roll is used, the printing device has a short stop time and good work efficiency.

According to the inventions of the second, seventh, twelfth and twenty-third aspects, since the position of the key groove is detected before the plate cylinder is mounted on the fixed side of the unit of each printing unit, the position information of the self-key groove and The position data of the reference mark or the virtual reference mark is known to be used for the upstream side of the printing plate relative to the printing unit Since the cylinder positions the rotation angle of the downstream side plate cylinder, the plate cylinders can be automatically positioned immediately after the plate cylinder is mounted on the unit fixing side of each printing unit. As a result, the stop time of the printing apparatus is short when the plate cylinder is replaced, and the work efficiency is further improved.

According to the third and eighth aspects of the invention, since the reference mark or the virtual reference mark is placed at a predetermined position by the mark positioning means, the upper end of the rod becomes a reference mark or a virtual reference mark on the plate cylinder. The mark of the position is determined in advance, so it is easy to set the reference mark or the virtual reference mark at a predetermined position. Further, with a simple configuration, it is possible to mark the predetermined position of the reference mark or the virtual reference mark on the plate cylinder, so that the cost of the cart can be made low.

According to the invention of the fourth and ninth aspects, the plate roller in a state where the plate cylinder has been loaded onto the printing unit and the plate roller in a state where the unit is fixed to the unit of each of the printing units Since the positional relationship of the cylinders is in the up and down relationship, the width of each printing unit perpendicular to the axial direction of the plate cylinder can be made narrow. Therefore, it is possible to make the gap between the printing units narrow, so that the printing apparatus can be arranged compactly.

According to the fifth and tenth aspects of the invention, the plate cylinder is fed from the cart to the lifting portion and the plate cylinder is moved to the mounting position of the plate cylinder on each printing unit by the lifting portion being raised. These two things can be done at one time. On the other hand, by the elevating portion descending, the movement of the plate cylinder from the mounting position on each printing unit to the cart and the transfer of the above-described plate cylinder from the elevating portion to the cart can be performed at one time. Therefore, the replacement work of the plate cylinder can be performed efficiently. Moreover, because the lift is supported from below when it is raised The plate cylinder positioned on the cart does not change in this state, so when the plate cylinder is delivered to the lifting portion from the cart, it is placed on the cart in a predetermined position. The reference mark or virtual reference mark of the plate cylinder will not be misaligned.

According to the invention of the sixth and tenth aspects, since the sensor does not contact the end portion in the axial direction of the plate cylinder when the key groove is detected, the plate cylinder is in the axial direction at the plate roller intersection There will be no misplacement. Therefore, it is possible to prevent the mounting error from occurring due to the displacement of the plate cylinder at the plate roller delivery portion when the plate cylinder is mounted on the unit fixing side of each printing unit. Moreover, the configuration is not as complicated as the sensor is in contact with the keyway to detect the position, so that the configuration of the printing unit can be simplified.

According to the twelfth aspect of the invention, in the case where the key grooves of the different types of plate cylinders are respectively detected, the non-contact type sensor is fixed, and only the lifting position of the lifting portion is changed, that is, each printing can be detected. The keyway on the plate roller. Therefore, when the structure of each printing unit is not complicated, the position of the key groove on the plate cylinder of various sizes can be detected by the lifting operation of the lifting portion.

According to the thirteenth aspect of the invention, when the support shafts are retracted to detach the plate cylinder from the respective printing units, the support shaft is disengaged from the plate cylinder and the other support shaft is engaged with the plate cylinder to be difficult to separate. In the state of the plate cylinder, the plate cylinder is pulled by the other support shaft, and the end portion of the plate cylinder in the axial direction is in contact with the protruding end of the cylindrical sleeve, after which the plate cylinder does not move. Only the support shaft is retracted, so that it is very easy to remove the plate cylinder from the printing unit.

According to the fourteenth aspect of the invention, since the position of the protruding end of the cylindrical sleeve relative to the end portion in the axial direction of the plate cylinder can be changed by adjusting the length of the cylindrical sleeve, even if it is replaced The length of the plate cylinder in the axial direction of the plate cylinder is changed, and the protruding end of the cylindrical sleeve can be positioned in the vicinity of the end portion in the axial direction of the plate cylinder.

According to the fifteenth aspect of the invention, since the cart is moved forward and backward from the side opposite to the mounting position of the plate cylinder on the printing unit, the space on the upstream side and the downstream side in the substrate conveying direction of the printing unit can be effectively utilized. . Moreover, since the plate roller positioning mechanism and the cart positioning mechanism are used to merely push the cart under the mounting position of the plate cylinder on the printing unit, the plate cylinder is placed at a position that can be mounted on the printing unit. Therefore, after the operator enters the cart below the mounting position of the printing plate cylinder on the printing unit, the cart is moved toward the upstream side and the downstream side of the printing unit in the printing conveyance direction, and it is not necessary to confirm the printing plate cylinder. The replacement of the plate cylinder is simple and easy with respect to the position of the plate roller mounting position.

According to the sixteenth aspect of the invention, if the slide frame is slid toward the direction in which the carriage is moved with respect to the main frame, the plate cylinder is in a state where the cart has been placed below the mounting position of the plate cylinder. It is in a position that can be mounted on the printing unit. On the other hand, if the sliding frame is slid in the direction in which the main frame is retracted toward the cart, the overall length of the trolley is shortened and compact, so that the cart can be turned slightly when the cart is transported by the cart, and the operator can easily Operate the cart.

According to the invention of the seventeenth aspect, by the sliding action of the slider, it is very simple to move the positioning plate to the end corresponding to the various plate cylinders. Marking, which shortens the preparation time when replacing the plate cylinder.

According to the eighteenth aspect of the invention, when the plate cylinder is loaded on the cart, the positioning plate resists the positioning plate even if the plate roller unexpectedly contacts the positioning plate from above. The force applied by the force member is rotated downward, so that the positioning plate can be prevented from malfunctioning when the plate cylinder is brought into contact with the positioning plate from above.

According to the nineteenth aspect of the invention, since the cart is placed from the side below the mounting position of the plate cylinder, the cart positioning mechanism and the unit fixing side are engaged with each other by the engaging action, so that the cart can be pushed Securely fastened to the unit's fixed side.

According to the twentieth aspect of the invention, since the hook member is automatically engaged with the engaged member after the cart is brought into the printing unit, the cart is fixed to the unit fixing side, so that the cart is brought into the printing unit. In addition to the work, the operator does not need to perform complicated work such as fixing the cart to the printing unit, and the cart can be easily fixed to the unit fixing side.

detailed description

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. Moreover, the following preferred embodiments are merely illustrative of the nature of the invention.

(First embodiment of the invention)

Fig. 1 shows a printing apparatus 1 according to a first embodiment of the present invention. The printing apparatus 1 includes a printing unit 2 that supports a plate cylinder 31 that transfers ink or the like to a substrate W such as a plastic film, and that rotates the plate cylinder 31, and carries the plate cylinder 31 thereto. The lower portion of the printing unit 2 or the cart 5 carried out from the lower portion of the printing unit 2 (see Figs. 2 and 3). Above The printing unit 2 is arranged three by side.

A delivery roller 10a that feeds the substrate W is provided on the upper left side of the paper surface of Fig. 1. On the other hand, a winding roller 10b that winds up the above-described substrate W is provided on the upper right side of the paper surface of Fig. 1 . A plurality of guide rollers 11 are disposed between the delivery roller 10a and the winding roller 10b, and the substrate W is wound around the respective guide rollers 11, and is transported by the respective printing units 2. Further, a dryer 10c that dries the substrate W passing through each printing unit 2 is provided on the downstream side in the substrate transport direction of each printing unit 2, respectively.

As shown in FIG. 2, each of the printing units 2 includes a pair of vertical frames (unit fixed sides) 2a extending upward and downward, and the plate cylinder 31 is supported by the two vertical frames 2a in a state in which the axial direction is directed in the horizontal direction. Between, can rotate.

A recessed portion 31a recessed toward the inner side in the axial direction is formed at both ends in the axial direction of the plate cylinder 31, and a key groove 31b is formed in one of the recessed portions 31a. Refer to Figure 4).

A register mark (virtual reference mark) 31c serving as a virtual reference is printed on one end of the outer peripheral surface of the plate cylinder 31 in the axial direction, and the registration mark is located relative to the true for aligning the printed pattern. The reference position is from the position where the upstream side plate cylinder 31 of the printing unit 2 arranged side by side is increased toward the downstream side plate cylinder 31 by a predetermined angle.

On the other hand, the support shaft 32a is provided opposite to the two vertical frames 2a on the printing unit 2, and the support shaft 32a can be in the axial direction of the plate cylinder 31 by the cylinder 32d which expands and contracts in the approximately horizontal direction. One end advances and retreats. The other support shaft 32a is stretched and contracted in an approximately horizontal direction The ball screw mechanism 32e that is driven by the motor can advance and retreat at the other end of the plate cylinder 31 in the axial direction.

The projecting end side of the pair of support shafts 32a is substantially tapered in correspondence with the recessed portion 31a, and the support shaft 32a is provided with a key 32b inserted into the key groove 31b of the plate cylinder 31 (refer to FIG. 4). ).

The pair of support shafts 32a are engaged with the recessed portions 31a of the plate cylinder 31 in the entering state to support the plate cylinder 31; and in the retracted state, they are separated from the recessed portions 31a of the plate cylinder 31. The above-described plate cylinder 31 is detached from the above two vertical frames 2a. The plate cylinder 31 and the support shaft 32a are positioned by inserting a key 32b provided on a support shaft 32a into the key groove 31b.

A drive portion 32c controlled by a servo motor that drives the rotation of the support shaft 32a is provided on a proximal end side of the support shaft 32a. The drive unit 32c drives the support shaft 32a to rotate, and the plate cylinder 31 rotates.

A cylindrical boss 38 for arranging the support shafts 32a is provided on each of the pair of vertical frames 2a. As shown in FIG. 4, the cylindrical boss 38 protrudes closer to the plate cylinder 31 side than the support shaft 32a in the retracted state.

The cylindrical sleeve 38 described above includes an outer tubular portion 38a and an inner cylindrical portion 38b. The outer peripheral portion of the outer tubular portion 38a is fixed to the side surface of the vertical frame 2a, and the inner tubular portion 38b is slidable toward the axial end portion of the plate cylinder 31 with respect to the outer tubular portion 38a.

On the upper side of the projecting end side of the outer tubular portion 38a, an indexing pin (index) is attached in a state where the pin projecting end P enters the inside of the outer tubular portion 38a. The plunger 38c has a through hole 38d formed at a position opposite to the pin protruding end P at a lower portion of the outer tube portion 38a on the protruding end side.

On the other hand, in the upper portion of the inner cylindrical portion 38b, five through holes 38e are formed at predetermined intervals in the axial direction of the plate cylinder 31, and a lower portion is formed in the lower portion of the inner cylindrical portion 38b. Five through holes 38f opposed to each of the above-described five through holes 38e.

The cylindrical boss 38 slides the inner cylindrical portion 38b with respect to the outer tubular portion 38a, and the pin protruding end P of the indexing pin 38c is fitted into the through hole 38e defined in the upper portion of the inner tubular portion 38b, and The pin P1 is inserted into the through hole 38d at the lower portion of the outer cylindrical portion 38a and the through hole 38f at the lower portion of the inner cylindrical portion 38b corresponding to the through hole 38d. The cylindrical sleeve 38 is at the axial center of the plate cylinder 31. The length in the direction can be adjusted. Therefore, when each of the support shafts 32a is retracted and the plate cylinder 31 is detached from each of the printing units 2, the support roller 32a is separated from the plate cylinder 31, and the other support shaft 32a is engaged with the plate cylinder 31 to be difficult to be detached. In the state of the plate roll 31, the plate cylinder 31 is brought into contact with the projecting end of the cylindrical bushing 38 by the other support shaft 32a while the axial end portion of the plate cylinder 31 is pulled, and then the plate cylinder 31 is followed. No longer moving, only the support shaft 32a is retracted, so that the plate cylinder 31 can be easily detached from the printing unit 2.

Since the position of the protruding end of the cylindrical sleeve 38 with respect to the axial end portion of the plate cylinder 31 can be changed by adjusting the length of the above-described cylindrical sleeve 38, even when the plate cylinder 31 is replaced The length of the platen roller 31 in the axial direction changes, and the protruding end of the cylindrical bushing 38 can be brought closer to the axial end portion of the plate cylinder 31 in accordance with the change in length.

Further, the cylindrical boss 38 of the present invention is configured to manually slide the inner tubular portion 38b with respect to the outer tubular portion 38a. In addition, the cylindrical bushing 38 may be configured such that the inner tubular portion 38b is automatically slid with respect to the outer tubular portion 38a by driving of a motor or the like.

As shown in Fig. 2 and Fig. 3, a pair of swinging plates 33 are opposed to each other on the side perpendicular to the axial direction of the plate cylinder 31 and at both ends of the plate cylinder 31 in the axial direction. Each of the swinging plates 33 extends substantially in the vertical direction, and the respective upper ends are pivotally supported by the respective vertical frames 2a, and the pair of swinging plates 33 are swingable. Between the lower end portions of the two oscillating plates 33, the transfer roller 34 whose axial direction is directed in the horizontal direction is rotatably supported by the shaft.

The transfer roller 34 is switchable between a state in which it is in contact with the outer peripheral surface of the plate cylinder 31 and a state in which it is not in contact by the swinging of the two swinging plates 33. During the operation of the printing apparatus 1, the ink transfer roller 34 rotates in a direction opposite to the rotation direction of the plate cylinder 31 while being in contact with the outer circumferential surface of the plate cylinder 31.

As shown in FIG. 3, a pair of vertical plates 35 are provided between the plate cylinder 31 and the upper peripheral portion of each of the outer peripheral surfaces of the transfer roller 34, and the pair of vertical plates 35 are at the axis of the plate cylinder 31. The spacers 35 are spaced apart in the direction, and the pair of vertical plates 35 span the above-described plate cylinder 31 and the above-described transfer roller 34. The plate cylinder 31, the transfer roller 34, and the two vertical plates 35 constitute a liquid reservoir Li for storing ink to the outer peripheral surface of the plate cylinder 31, and the ink is supplied to the reservoir from the ink supply device (not shown). Liquid part Li.

On the other side perpendicular to the axial direction of the above-described plate cylinder 31, a doctor blade 36 is provided, which is crimped to the above-mentioned plate roller. The outer peripheral surface of the cylinder 31 scrapes off excess ink adhering to the outer peripheral surface by the rotation operation of the plate cylinder 31.

Above the above-described plate cylinder 31, a pressure cylinder 37 is provided, which presses the substrate W against the plate cylinder 31 from above. The pressure cylinder 37 is slidable up and down by a sliding mechanism (not shown).

In a state where the plate cylinder 31 is supported by the respective support shafts 32a, the pressure cylinder 37 is slid downward, and the substrate W is sandwiched by the plate cylinder 31 and the pressure cylinder 37, and one side is sandwiched. The substrate W is moved by the rotation of the plate cylinder 31 and the cylinder 37, and the ink adhering to the outer peripheral surface of the plate cylinder 31 is transferred to the substrate W.

A pair of guide plates 39 are provided below the plate cylinder 31 and the transfer roller 34. The pair of guide plates 39 extend in the axial direction of the plate cylinder 31, and can be mounted on the two vertical frames 2a. It is also possible to remove from the two vertical frames 2a. The two guide plates 39 are inclined obliquely so as to be closer to each other as they are closer to the lower side, and the gap between the lower end edges of the two guide plates 39 is located directly below the transfer roller 34.

Further, when the printing apparatus 1 is not in operation, in order to prevent the two guide plates 39 from being inconvenience, the two guide plates 39 are detached from the printing unit 2 and placed on one side of the cart 5, but are not shown.

A plate cylinder delivery mechanism 4 is disposed at a lower portion of each of the printing units 2, and the plate cylinder 31 is transferred between the two vertical frames 2a and the cart 5 by the plate cylinder delivery mechanism 4.

The plate roller delivery mechanism 4 includes the lead frame 2a from the above (Fig. 2 The lower portion of the lower portion of the middle side of the paper is directed toward the other vertical frame 2a (the left side of the paper surface in Fig. 2) along the axial direction of the plate cylinder, and is disposed between the position near the projecting end of the bottom frame 41 and the ground. There is a support frame Fr that supports the projecting end of the above-mentioned bottom frame 41.

A first driving portion 42 having a rotation axis direction directed to the axial direction of the plate cylinder and controlled by a servo motor is disposed above the bottom frame 41 on the vertical frame 2a; an output shaft of the first driving portion 42 A rotating shaft 42a extending in the axial direction of the plate cylinder is mounted thereon, and the rotating shaft 42a rotates together with the driving of the first driving portion 42.

A pair of gear boxes 43 are provided on the upper surface of the bottom frame 41, and the pair of gear boxes 43 are formed at a predetermined interval in the axial direction of the plate cylinder, and have a substantially rectangular parallelepiped shape having a large longitudinal dimension. The rotating shaft 42a extends through a gear box 43, and the protruding end of the rotating shaft 42a reaches the inside of the other gear box 43, and a spur gear 42b that rotates integrally with the rotating shaft 42a is disposed inside each of the gear boxes 43 (refer to the figure). 3).

Each of the gear cases 43 is provided with a rack 44 that penetrates the gear box 43 up and down, and the rack 44 and the spur gear 42b mesh in the respective gear cases 43.

A support plate 45 (see FIG. 5) extending in the axial direction of the plate cylinder and having a substantially U-shape in a plan view is attached to the upper end of each of the racks 44. A unit-side reel 46 having a rotational axis direction directed toward the axial direction of the plate cylinder is disposed at substantially four corners of the support plate 45, and the plate roller 31 is supported by the four unit-side reels 46. It can rotate around the axis.

As shown in FIG. 3, the axis of the plate cylinder on the back surface of the above-mentioned support plate 45 A side of the direction and perpendicular to the axial direction of the plate cylinder is provided with a second driving portion 47 whose rotation axis points in the axial direction of the plate cylinder and is controlled by a servo motor.

Among the four unit side turning wheels 46, the unit side turning wheel 46 located at one end in the axial direction of the plate cylinder and perpendicular to the axial direction of the plate cylinder is driven by the second drive via a belt (not shown). The portion 47 is driven to rotate, and the plate cylinder 31 supported by the above-described four unit side turning wheels 46 is rotated about the axis.

The second drive unit 47 is provided with a rotary encoder 47a (rotation angle detecting unit) that can detect the plate roller supported by the four unit side reels 46 via the unit side reel 46. The angle of rotation of the barrel 31 about the axis.

The lifter 40 is constituted by the two racks 44, the support plate 45, the four unit side runners 46, and the second drive unit 47. The lifting unit 40 is configured such that when the rotating shaft 42a is driven to rotate by the first driving unit 42 in a state where the lifting unit 40 supports the plate cylinder 31 from below, the racks 44 pass through the spur gear. 42b moves up and down, and the lifting portion 40 is thus raised and lowered, and the plate cylinder 31 is transferred between the lower end position and the cart 5; and the plate cylinder 31 is transferred between the rising end position and the two vertical frames 2a. Therefore, the cart 5 in a state in which the plate cylinder 31 has been transported to the printing unit 2 and the plate cylinder 31 in a state of being mounted on the two vertical frames 2a of the respective printing units 2 are in a vertical relationship, each of which is in a vertical relationship. Since the width of the printing unit 2 in the direction perpendicular to the axial direction of the plate cylinder 31 is narrowed, the interval between the printing units 2 can be narrowed, and the layout of the printing apparatus 1 can be made compact.

As shown in Fig. 9, a vertical wall portion 41a and a mounting plate 41c are provided at a lower portion of the bottom frame 41 on the side of the projecting end. The vertical wall portion 41a extends downward from the bottom frame 41 and has a plate shape. The mounting plate 41c is formed from a projecting end of the vertical wall portion 41a toward the other vertical frame 2a side and has a plate-like horizontal portion 41b. The profile is approximately "L" shaped.

On the upper surface of the horizontal portion 41b, the first projecting plate 48a and the second projecting plate 48b are arranged side by side at intervals in a direction perpendicular to the axial direction of the plate cylinder, and are formed on the first projecting plate 48a. The intermediate portion in the longitudinal direction of the hook member 48c extending in the horizontal direction is supported by the horizontal support shaft 48e, and is swingable in the vertical direction.

A fitting groove 48d having a lower opening is formed at one end in the longitudinal direction of the hook member 48c, and one end of the coil spring (the biasing member of the hook member) Sp is fixed to the longitudinal direction of the hook member 48c. another side.

The other end of the coil spring Sp is fixed to the upper end of the second projecting plate 48b, and the coil spring Sp is biased to rotate the hook member 48c upward to maintain the hook member 48c in an approximately horizontal state.

On the other hand, the substantially rectangular or square plate 52c protrudes upward from the frame 52b (refer to FIGS. 5 and 6) provided in the cart 5 in the direction in which the cart enters the center of the cart, and extends in the cart width direction. The joined member 52d of approximately "U" shape in plan view protrudes from the front surface of the board 52c in the direction in which the cart enters.

When the cart 5 is pushed under the plate cylinder mounting position of the printing unit 2, as shown in FIG. 9, the member to be joined 52d is positioned below the plate roller mounting position of the printing unit 2 by the cart 5. Entry action The lower portion of one end in the longitudinal direction of the hook member 48c is pressed, and the hook member 48c is slidably contacted with the engaged member 52d, and is rotated against the elastic force of the coil spring Sp. When the cart 5 is further moved under the plate cylinder mounting position of the printing unit 2, and the engaged member 52d is associated with the fitting groove 48d, the hook member 48c is restored by the coil spring Sp. When the force is rotated, the engaged member 52d is fitted into the fitting groove 48d, and the position of the cart 5 with respect to the printing unit 2 in the longitudinal direction is determined.

That is, the cart positioning means 13 is constituted by the above-described plate 52c and the member to be joined 52d. The engaged member 52d engages or disengages (linking action) between the cart 5 that has entered the printing plate unit 2 below the plate cylinder mounting position and the hook member 48c of the printing unit 2 to cause the cart to be engaged. 5 Positioned below the plate roller mounting position without moving.

A non-contact sensor 6 is provided at an intermediate portion of the printing unit 2 in the vertical direction and on one side of the printing unit 2 (above the first driving portion 42 of the vertical frame 2a).

The non-contact sensor 6 can measure the laser light Lz from one end in the axial direction of the plate cylinder 31 toward the axial end portion of the plate cylinder 31, and can measure from the non-contact sensor 6 to the plate. The distance between the axial end portion of the roller 31 and the position at which the key groove 31b is formed at the end portion of the plate cylinder 31 in the axial direction and the position at which the key groove 31b is not formed are changed by the measured value to detect the key groove. 31b.

The above-described rotary encoder 47a and the above non-contact sensor 6 A keyway position detecting means (keyway position detecting means) 60 for detecting the position of the key groove 31b of the plate cylinder 31 is formed. When the registration mark 31c is at a predetermined position, the plate cylinder 31 supported by the lifting unit 40 is rotated about the axis until the key groove 31b is detected by the proximity sensor 6. The rotation angle is detected by the above-described rotary encoder 47a, whereby the position of the key groove 31b with respect to the registration mark 31c is detected. Therefore, since the non-contact sensor 6 does not come into contact with the end portion of the plate cylinder 31 in the axial direction when the key groove 31b is detected, the plate cylinder 31 does not be displaced in the axial direction in the lifting portion 40, thereby enabling The mounting error of each printing unit 2 with respect to the two vertical frames 2a due to the misalignment of the plate cylinder 31 on the lifting portion 40 is avoided.

Further, the structure is not as complicated as when the sensor is in contact with the contact key groove 31b to detect the position of the key groove 31b, and the structure of the printing unit 2 can be simplified.

In the case where the key grooves 31b on the different types of plate cylinders 31 are respectively detected, the non-contact sensor 6 is fixed, and only the lifting position of the lifting portion 40 is changed, that is, the key groove 31b on each of the plate cylinders 31 can be detected. Since the position of each printing unit 2 is not complicated, the position of the key groove 31b of the plate cylinder 31 having a different size can be detected by the lifting operation of the lifting unit 40.

The cart 5 is configured to be freely movable on the floor, and the plate cylinder 31 is moved to the lower portion of the printing unit 2 or the plate from an opening (not shown) formed in a lower portion of the other vertical frame 2a. The roller 31 is removed from the lower portion of the printing unit 2 described above. As shown in Figure 2, the above cart 5 pack The main frame 51 is extended in the direction in which the cart enters, and constitutes a skeleton of the cart 5, and is assembled from a plurality of iron frames having an L-shaped cross section.

As shown in FIG. 5 and FIG. 6, the main frame 51 includes a lower frame 51a and an upper frame 51b. The lower frame 51a has a mouth opening at the front end of the cart, and has an approximately U-shape when viewed from above; the upper frame 51b The front end of the cart is opened in the direction of the entrance, and has an approximately "U" shape when viewed from above, corresponding to the front portion of the lower frame 51a from the front end of the cart to the intermediate portion.

The upper frame 51b is attached to the lower frame 51a by a joint frame 51c extending straight downward from the four corners of the upper frame 51, and also shown in FIG. 3, entering the cart along the upper frame 51. A portion in which the direction extends straight is provided with a pair of slide rails Sr.

A pair of front side rollers Ca that cannot rotate about an axis extending in the vertical direction are mounted in front of the cart entering direction on the lower end side of the lower frame 51a; and a pair of axes extending in the vertical direction are mounted behind the cart entering direction. The rear side roller Cb of the heart is rotated. A gripping member 51d having a substantially "gate" shape is attached to the rear end of the lower frame 51a in the direction of the entry direction of the cart, and the operator H can move the cart 5 by gripping the upper end of the grip member 51d.

A slide frame 54 on which the above-described plate cylinder 31 is mounted is disposed above the upper frame 51b, and the slide frame 54 includes a pair of first frames 54a and a pair of second frames 54b. The pair of first frames 54a extend in the cart entry direction corresponding to the respective slide rails Sr; the pair of second frames 54b hold the pair of first frames 54a at a predetermined interval in the cart entry direction. Connected Come. The opening 54c formed by the pair of first frames 54a and the pair of second frames 54b has a width through which the support plate 45 can pass.

A slide plate 54d having a substantially U-shaped cross section is respectively protruded from a lower surface of the pair of first frames 54a, and the slide plate 54d is slidably fitted to the slide rail Sr, and the slide frame 54 is slidable relative to the upper surface The frame 51b slides toward the cart entry direction.

As shown in Fig. 7(c), each of the first frames 54a has a substantially "L" shape in cross section, and the side surface covers the upper side surface of the upper frame 51. As shown in Figs. 7(a) and 7(b), a pair of positioning holes 54e are formed on the side surface of a first frame 54a (on the side of the paper on Figs. 5 and 6), and the positioning holes 54e are held in the direction in which the cart enters. There are prescribed intervals.

An indexing pin 51e is mounted on a portion of the upper frame 51b corresponding to the first frame 54a, that is, extending in the direction in which the cart enters, and the protruding pin P2 of the indexing pin 51e is approximately in the center of the cart. Prominent toward the outside. As shown in FIG. 5 and FIG. 7(a), when the sliding frame 54 is slid toward the front side of the strolling direction with respect to the upper frame 51b, the protruding end pin P2 of the indexing pin 51e is inserted into a positioning. In the hole 54e, the position of the slide frame 54 with respect to the upper frame 51b is determined. On the other hand, as shown in FIG. 6 and FIG. 7(b), when the slide frame 54 is slid toward the rear side of the strolling direction with respect to the upper frame 51b, the protruding end of the indexing pin 51e is made. The pin P2 is fitted into the other positioning hole 54e, and the position of the slide frame 54 with respect to the upper frame 51b is determined.

A pair of cart side rollers 55 are disposed on each of the second frames 54b in a state in which the axial direction is directed toward the cart entering direction, and the pair of cart side rollers 55 are provided. A predetermined interval is maintained in the width direction of the cart, and the plate cylinders 31 are supported by the four cart side rollers 55 to rotate the plate cylinder 31.

A brake lever 55a capable of restricting the rotation of the cart side roller 55 is provided on one of the two cart side rollers 55 formed on the second frame 54b on the rear side of the cart entry direction. By operating the brake lever 55a, the plate cylinder 31 mounted on the four cart side rollers 55 can be switched between a rotatable state and a stopped state.

The plate cylinder rotating portion 50 is constituted by the above-described four cart side rollers 55, and the plate cylinder rotating portion 50 causes the above-described registration plate 31 to be loaded in order to position the registration mark 31c at a predetermined position. Rotate around the axis.

As shown in FIG. 5 and FIG. 6, a front end of the cart entering direction on the upper surface of the first frame 54a on one side in the cart width direction is provided with a pair of rectangular shapes which are spaced apart at a predetermined interval in the direction in which the cart enters. A plate or square plate 56a is mounted between the two rectangular plates or square plates 56a with a shaft 56b extending in the direction in which the cart enters.

As shown in Fig. 3, the lower end of the approximately prismatic rod 56c is supported by the shaft 56b, and the approximately prismatic rod 56c is swingable in the up and down direction, and the rod 56c is slidable in the cart entry direction with respect to the shaft 56b.

A projection 56d having a sharp projection end is protruded from the upper end of the rod 56c, and the projection 56d having a pointed end protrudes toward the plate cylinder 31 to be loaded on the plate cylinder rotating portion 50.

The mark cylinder rotating portion 50, the rectangular plate or the square plate 56a, the shaft 56b, and the rod 56c constitute the mark positioning means 56. The protruding end of the protrusion 56d is mounted on the upper surface by the swinging motion of the rod 56c A portion of the outer peripheral surface of the plate cylinder 31 corresponding to the registration mark 31c is in contact. Therefore, when the registration mark 31c is positioned at a predetermined position by the mark positioning means 56, the projection 56d of the lever 56c becomes a mark indicating a predetermined position of the registration mark 31c in the plate cylinder 31, so It is easy to make the registration mark 31c at a position determined in advance. Further, since the position of the registration mark 31c in the plate cylinder 31 can be marked with a simple configuration in a simple configuration, the cart 5 having a low cost can be manufactured.

A plate cylinder positioning mechanism (plate cylinder positioning means) 57 that is movable in the advancing and retracting direction of the cart is provided on the front side of the first frame 54a on the one side in the width direction of the cart.

As shown in Figs. 8(a) and 8(b), the plate cylinder positioning mechanism 57 includes: a positioning plate 57a formed in an approximately "L" shape, a plate supporting member 57b supporting the positioning plate 57a, and a push The marking member 57i, which is extended in the advancing and retracting direction and respectively printed at the end positions of the various plate cylinders 31 corresponding to the loaded lengths, is pushed on the opposite side of the first frame 54a from the marking member 57i. A guide rail 57j provided in the advancing and retracting direction of the vehicle, and a slide plate 57k having a U-shaped cross section which is slidable along the marking member 57i.

The plate supporting member 57b includes a vertical plate portion 57c, an upper horizontal plate portion 57d, and a lower horizontal plate portion 57e. The vertical plate portion 57c extends vertically upwards, and the upper horizontal plate portion 57d extends horizontally from the upper end of the vertical plate portion 57c so as to be separated from the first frame 54a. The lower horizontal plate portion 57e is for diving under the first frame 54a. The lower end of the vertical plate portion 57c extends horizontally. Between the upper horizontal plate portion 57d and the vertical plate portion 57c, The plate supporting plate 57f whose plate surface faces the direction in which the cart enters is integrally formed with the upper horizontal plate portion 57d and the vertical plate portion 57c.

The slide plate 57k is provided on the upper surface of the lower horizontal plate portion 57e, and is slidably fitted to the guide rail 57j. The plate support member 57b is slidable in the cart entry direction with respect to the first frame 54a.

One end of the positioning plate 57a is supported by the horizontal support shaft 57g on the plate supporting plate 57f, and the positioning plate 57a is swingable in the up and down direction, and a torsion spring is wound around the horizontal support shaft 57g (the biasing force of the positioning plate) Parts) 57h.

One end of the torsion spring 57h is fixed to the positioning plate 57a, and the other end is fixed to the vertical plate portion 57c. When the torsion spring 57h is biased, the positioning plate 57a is rotated upward, and the positioning plate 57a is held in an inclined state extending obliquely upward. As shown in Fig. 8(b), even if the above-described plate cylinder 31 contacts the positioning plate 57a from above, the positioning plate 57a is rotated downward against the force applied by the torsion spring 57h. Therefore, when the plate cylinder 31 is loaded onto the cart 5, since the plate roller 31 unexpectedly contacts the positioning plate 57a from above, the positioning plate 57a resists the force applied by the torsion spring 57h. The lower side is rotated, so that it is possible to prevent the positioning plate 57a from malfunctioning when the plate cylinder 31 comes into contact with the above-mentioned positioning plate 57a from above.

In a state where the positioning plate 57a is slid to a mark position of the marking member 57i corresponding to the loaded plate cylinder 31, the axial end portion of the plate cylinder 31 is made to be The positioning plate 57a is in contact with the plate cylinder 31 while being loaded onto the rotating portion of the plate cylinder At 50, when the cart 5 has entered the plate roller mounting position, the cart 5 is positioned to mount the plate cylinder 31 on the cart 5 on the printing unit 2. Therefore, with the sliding operation of the slide plate 57k, it is possible to easily move the mark positioning plate 57a to the mark position corresponding to the end portions of the various plate cylinders 31, thereby enabling preparation for replacing the plate cylinder 31. Time is shortened.

Above the first frame 54a on the other side in the width direction of the above-described cart, an ink receiving member 58 having an approximately "V" shape extending in a cross section in the direction in which the cart is inserted is provided.

The ink receiving member 58 has an opening 58a at its upper end, and the opening 58a corresponds to a gap between the lower end edges of the respective guide plates 39 in a state where the cart 5 is moved to the lower portion of the printing unit 2. The ink receiving member 58 receives the ink guided downward along the respective guide plates 39 via the opening 58a.

The opening portion 58a is covered by a plate-like filter 58b extending in the approximately horizontal direction, and dust in the passed ink is filtered by the plate-like filter 58b.

As shown in Fig. 2, the bottom of the ink receiving member 58 is gradually inclined downward toward the rear side in the cart entry direction, and the ink received by the ink receiving member 58 is guided toward the rear side in the cart entry direction.

As shown in FIGS. 5 and 6, a placing table 59 is provided on the upper surface of the lower frame 51a on the rear side in the direction in which the cart enters. The placing table 59 is composed of a bottom surface portion 59a extending in a substantially rectangular shape in the vehicle width direction, and a side wall portion 59b projecting upward from the outer circumferential edge of the bottom surface portion 59a. The mounting table 59 is provided. It protrudes toward both sides from the lower frame 51a described above.

Two ink recovery cassettes 12 are arranged side by side in the cart width direction of the mounting table 59 in the center of the cart and on the other side in the cart width direction. Each of the two ink recovery cassettes 12 has an opening 12a at its upper end, and the ink received by the ink receiving member 58 is recovered from the opening 12a.

An ink guiding portion 53 is provided at the rear end of the above-described upper frame 51 in the cart entry direction. The ink guiding portion 53 guides the ink received by the ink receiving member 58 toward the ink recovery cartridge 12.

The front side portion of the ink guiding portion 53 in the cart entry direction is pivotally supported, and the ink guiding portion 53 is swingable to the left and right; the ink guiding portion 53 includes an inclined portion that is inclined downward toward the rear side of the cart entering direction and has a cross section of approximately U-shape. 53a. By swinging the ink guiding portion 53, the inclined portion 53a is positioned above the ink recovery cassette 12 at the rear end of the cart entering direction.

In a state where the slide frame 54 is slid with respect to the front frame 51b toward the front side in the cart entry direction, the ink guiding portion 53 is located below the rear end portion of the ink receiving member 58 in the cart entry direction. The ink that flows toward the rear side of the cart entering direction of the ink receiving member 58 toward the rear side of the above-described ink collecting member 12 and flows down from the rear end of the cart entering direction is guided toward the above-described ink recovery cartridges 12.

As shown in FIGS. 3 and 6, a pair of guide members 52a are protruded from the front end of the main frame 51 in the direction in which the cart enters. The pair of guide members 52a are disposed opposite to the pair of connection frames 51c and have an approximately "L" shape in a front view, and a pitch between the protruding ends corresponds to a width dimension of the bottom frame 41.

When the cart 5 is pushed to the lower portion of the printing unit 2 (refer to the figure) 11 and FIG. 12), as shown in FIG. 3, the protruding end faces of the two guide members 52a are in sliding contact with both side faces of the bottom frame 41, and the cart 5 is pushed to the lower portion of the printing unit 2, and the push is performed. The position of the car 5 in the width direction with respect to the above-described printing unit 2 is determined.

Pushing the cart 5 to the lower portion of the printing unit 2, the hook member 48c is engaged with the engaged member 52d, and the sliding frame 54 is slid toward the front side of the cart entering direction with respect to the upper frame 51b. In the state of being positioned (see FIG. 13), the elevating portion 40 is located below the plate cylinder 31 that has been loaded on the plate cylinder rotating portion 50, and is lifted from the plate cylinder rotating portion 50 when it is raised. The plate cylinder 31 is raised (refer to Figs. 14 and 15); when descending, the plate cylinder 31 received from the two vertical frames 2a of the respective printing units 2 is fed to the plate cylinder rotating portion 50. . Therefore, by the elevation of the lifting portion 40, the transfer from the cart 5 to the plate cylinder 31 of the lifting portion 40 and the movement of the plate cylinder 31 to the mounting position on each printing unit 2 can be completed. By the lowering of the lifting portion 40, the movement of the plate cylinder 31 from the mounting position of the plate cylinder 31 on each printing unit 2 to the cart 5 and the self-lifting of the plate cylinder 31 can be performed at a time. The department 40 hands over the handover work of the cart 5. As a result, the replacement work of the plate cylinder 31 can be performed efficiently.

The lifting portion 40 supports the plate cylinder 31 that has been positioned on the cart 5 from below when it is raised, and maintains the state at this time. Therefore, when the plate cylinder 31 is delivered from the cart 5 to the lifting portion 40, The registration mark 31c of the plate cylinder 31 located at a predetermined position on the cart 5 is not misaligned.

As shown in FIG. 10, the printing unit 2 is connected to control the printing list. Control panel (control means) 7 of element 2.

In a state where the plate cylinder 31 has been detached from each of the support shafts 32a, the control panel 7 controls the drive portion 32a to previously position the key 32b at the upper end of the support shaft 32a.

As shown in FIGS. 16(b) and 16(c), in a state where the cart 5 on which the plate cylinder 31 is loaded is pushed to the lower portion of the printing unit 2, the control panel 7 controls the first drive. The portion 42 raises the elevating portion 40, and the elevating portion 40 thereby picks up the plate cylinder 31 from the cart 5.

As shown in FIGS. 16(c) and 16(d), the control panel 7 controls the first driving unit 42 to stop the lifting unit on which the plate cylinder 31 is loaded, and to control the second. The drive unit 47 controls the key position detecting mechanism 60 to detect the position of the key groove 31b while the plate cylinder 31 is rotated about the axis by the four unit side turning wheels 46.

As shown in Fig. 10, the control panel 7 includes a storage unit 7a that stores various materials input from an operation panel (not shown). As shown in FIG. 17 and FIG. 18, the memory unit 7a stores in advance the following information, that is, the distance L between the transfer positions of the adjacent printing units 2 to the substrate W, the radius r of the plate cylinder 31, The positional information of the registration mark 31c of the plate cylinder 31 that has been loaded onto the above-described cart 5, and the printing of the downstream side plate cylinder 31 of the adjacent printing unit 2 with respect to the upstream side for aligning the printing pattern The position correction of the plate cylinder 31 is the reference position correction angle θ α of the true reference position.

Further, the reference position correction angle θ α is an angle determined in advance between the plate cylinders 31 respectively mounted on the adjacent printing units 2.

The control panel 7 includes a calculation unit 7b that stores the position data θb in the plate cylinder 31 of each of the printing units 2 based on the key groove 31b detected by the key groove position detecting mechanism 60 and is stored in the memory unit 7a. The position data θ a of the registration mark 31c is calculated from the angles θ 1 and θ 2 formed by the key groove 31b and the registration mark 31c around the axis. The calculation portion 7b prints the downstream side of the upstream side plate cylinder 31 and the downstream side plate cylinder 31 of the adjacent printing unit 2 with respect to the upstream side plate cylinder 31 in accordance with the following formula (1). The rotation angle θ 3 at which the plate cylinder 31 performs the mark positioning is calculated separately.

θ 3=2(n+1) π + θ 1- θ 2-L/r+ θ α(n is an integer) (1)

Further, as shown in FIG. 17, the above calculation formula (1) is obtained from the equation (2). The formula (2) is a transfer position and the state of the upstream side plate cylinder 31 on the substrate W in each of the plate cylinders 31 of the two printing units 2 located on the upstream side and the center position in the conveyance direction of the substrate. The calculation formula of the distance r θ 1 between the mark positioning position X1 corresponding to the registration mark 31c, the transfer position of the downstream side plate cylinder 31, and the mark positioning position X2 corresponding to the registration mark 31c.

L'=2n π r+r θ 1-L (2)

As shown in Fig. 16 (e), in a state where the key position detecting means 60 detects the position data θ b of the key groove 31b, the control panel 7 controls the second driving unit 47 to be turned by the four units. The wheel 46 rotates the above-described plate cylinder 31 about the axis to the upper end of the plate cylinder 31 so that the key groove 31b corresponds to the above-mentioned key 32b.

As shown in Fig. 16 (f), in a state where the key groove 31b of the plate cylinder 31 mounted on the elevating portion 40 is located at the upper end, the control panel 7 controls the first driving portion 42 to raise the elevating portion 40. To the rising end position.

In addition, the control panel 7 controls the cylinders 32d to bring the pair of support shafts 32a into the axial end portions of the plate cylinder 31 in a state where the lifter 40 is at the rising end position, and the control panel 7 is placed at the rising end position. The key 32b is inserted into the key groove 31b, and the plate cylinder 31 is rotatably supported by the two vertical frames 2a. Further, as shown in FIG. 16(g), the control panel 7 further controls the first driving unit 42 to lower the lifting unit 40.

As shown in FIGS. 17 to 19, in a state in which the plate cylinder 31 is rotatably supported by the two vertical frames 2a, the control panel 7 controls the driving portion 32a so as to be downstream of the adjacent printing unit 2. The side plate cylinder 31 is rotated by the above-described rotation angle θ 3 with respect to the upstream side plate cylinder 31.

Further, in FIGS. 17 to 19, the state in which the pressure cylinder 37 presses the substrate W tightly on the plate cylinder 31 from above is shown. When the downstream plate cylinder 31 of the adjacent printing unit 2 is rotated by the rotation angle θ3 with respect to the upstream side plate cylinder 31, the pressure cylinder 37 is slid upward by a sliding mechanism (not shown). The state in which the substrate 37 is pressed tightly against the platen roller 31 from above is not caused.

In a state in which the plate cylinder 31 is rotatably supported by the support shafts 32a, the control panel 7 controls the first drive unit 42 to raise the lift unit 40 to the rising end position, and is supported by the lift unit 40. The plate cylinder 31, the control panel 7 further controls the respective cylinders 32d to The pair of support shafts 32a are retracted from both end portions of the plate cylinder 31 in the axial direction, and the plate cylinder 31 is detached from the two vertical frames 2a, and the plate cylinder 31 is taken from the two vertical frames. 2a is delivered to the above-described lifting portion 40.

The control panel 7 controls the first driving portion 42 in a state where the above-described plate cylinder 31 is supported by the lifting portion 40 and the cart 5 on which the plate cylinder 31 is not loaded has been pushed to the lower portion of the printing unit 2. The elevating portion 40 is lowered, and the plate cylinder 31 is delivered to the cart 5 during the lowering.

Next, a method of attaching the plate cylinder 31 to each of the printing units 2 of the above-described printing apparatus 1 will be described.

First, during the operation of the printing apparatus 1 described above, the operator H slides the positioning plate 57a to the position of the marking member 57i corresponding to the next plate cylinder 31 to be replaced, and causes the printing plate cylinder 31 to The end portion in the axial direction is in contact with the positioning plate 57a, and the plate cylinder 31 is loaded onto the plate cylinder rotating portion 50.

Then, as shown in Fig. 16 (a), the rod 56c is swung to be in an inclined state, and the plate cylinder 31 is rotated by the plate cylinder rotating portion 50 so that the protruding end of the projection 56d and the registration mark 31c contact. In a state where the projection 56d is in contact with the registration mark 31c, the brake lever 55a is operated to stop the rotation of the plate cylinder 31.

As described above, the cart 5 loaded with the plate cylinder 31 is placed in front of each printing unit 2.

When the printing operation of the printing apparatus 1 is completed, the used plate cylinder 31 is removed from each printing unit 2 of the printing apparatus 1. after that, The plate cylinder 31 is rotated by the driving portion 32a to previously position the key 32b at the upper end of the support shaft 32a.

Then, as shown in FIG. 11, each of the carts 5 that stand by the respective printing units 2 is brought under the printing plate mounting position of each printing unit 2. When the cart 5 has been placed under the plate cylinder mounting position of the printing unit 2, the projecting end faces of the two guide members 52a are in sliding contact with both side faces of the bottom frame 41, and the cart 5 is pushed to one side. The lower portion of the printing unit 2 described above is such that the position of the cart 5 in the width direction thereof with respect to the printing unit 2 is determined.

Next, when the cart 5 is continuously moved toward the inside of the printing unit 2 from the state shown in Fig. 11, as shown in Fig. 12, the member to be joined 52d pushes the hook member 48c, which is a hook member 48c. Rotate against the force applied by the coil spring Sp. When the cart 5 is continuously moved in the printing unit 2, the engaged member 52d corresponds to the fitting groove 48d, and the hook member 48c is rotated by the restoring force of the coil spring Sp, and the engaged member 52d is The fitting groove 48d is joined, and the position of the cart 5 with respect to the printing unit 2 in the longitudinal direction thereof is determined.

Therefore, if the cart 5 is brought into the printing plate mounting position of the printing unit 2 from the side, the cart positioning means 13 and the hook member 48c are engaged with each other, so that the cart 5 can be firmly fixed. On the fixed side of the unit of the printing unit 2.

When the above-described cart 5 is brought into the printing unit 2, the hook member 48c is automatically engaged with the engaged member 52d, and the cart 5 is fixed to the unit fixing side of the printing unit 2. In addition to the operator H, the cart 5 is printed. In addition to the work of the brush unit 2, it is not necessary to perform complicated work of fixing the cart 5 to the printing unit 2, and the cart 5 can be easily fixed to the unit fixing side of the printing unit 2 simply.

Thereafter, as shown in FIG. 13, the slide frame 54 is slid forward with respect to the upper frame 51b toward the cart entry direction, and the protruding end pin P2 of the index pin 51e is fitted into a positioning hole 54e (refer to FIG. 7). (a)), whereby the position of the slide frame 54 with respect to the upper frame 51b is determined.

Thereafter, as shown in FIGS. 14 and 16(b), the first driving unit 42 drives the lifting unit 40 to rise and passes through the opening 54c, and the four unit side runners 46 support the plate cylinder 31 from below. .

Thereafter, as shown in FIG. 16(c), the elevating portion 40 is further driven by the first driving unit 42 to drive the elevating portion 40 to stop at the intermediate position in the vertical direction of the printing unit 2. As shown in Fig. 16 (d), the plate cylinder 31 is driven to rotate about the axis by the second driving portion 47, and the position data θ of the key groove 31b on the plate cylinder 31 is detected by the non-contact sensor 6. b.

The calculation unit 7b calculates the key groove 31b and the registration mark 31c based on the position data θ b of the key groove 31b detected by the key groove position detecting mechanism 60 and the position data θ a of the registration mark 31c stored in the memory unit 7a. The angles θ 1 and θ 2 formed by the axis.

The upstream side plate cylinder 31 and the downstream side plate cylinder 31 of the adjacent printing unit 2 are used to be downstream of the upstream side plate cylinder 31 by the above-described calculating portion 7b in accordance with the following formula (1). The rotation angle θ 3 of the side plate cylinder 31 for symbol positioning is calculated separately, θ 3 = 2 (n + 1) π + θ 1- θ 2-L / r + θ α (n is an integer) (1)

In addition, the calculated θ 3 is transformed into π Θ3 - The value of π . For example, when the calculated θ 3 is 3π, it is converted to θ 3 = π and used as the rotation angle.

Thereafter, as shown in Fig. 16(e), the second driving portion 47 drives one unit side reel 46, and the four unit side reels 46 rotate the plate cylinder 31 about the axis until the printing is performed. The upper end of the plate cylinder 31 is so long that the key groove 31b corresponds to the above-described key 32b.

Thereafter, as shown in FIG. 16(f), the first driving unit 42 further drives the lifting unit 40 to rise to the rising end position. As shown in Fig. 15, each of the cylinders 32d is expanded and contracted so that the pair of support shafts 32a enter the axial end portions of the plate cylinder 31 or exit from both axial ends of the plate cylinder 31. . Then, the key 32b is inserted into the key groove 31b, and the plate cylinder 31 is rotatably supported by the two vertical frames 2a.

As shown in FIG. 16(g), the lift unit 40 is driven to descend by the first drive unit 42. Thereafter, as shown in FIGS. 17 to 19, the driving portion 32a drives the downstream side plate cylinder 31 of the adjacent printing unit 2 to rotate by the above-described rotation angle θ3 with respect to the upstream side plate cylinder 31, and the printing plate is pressed. The work of mounting the roller 31 on the printing unit 2 is completed.

Therefore, the position data θ a of the registration mark 31c required to know the position of the registration mark 31c with respect to the key groove 31b can be known in advance in a state where the plate cylinder 31 is loaded on the cart 5, so that it can be shortened. After the push of the cart 5 to each of the printing units 2, the time taken to obtain the angles θ 1 and θ 2 formed by the registration marks 31 c and the key grooves 31 b around the axis is obtained. Further, based on the plate cylinder 31 they are attached to the previously detected key groove 31b of the position information θ b on each of the printing units two vertical frame 2a 2 by the position information θ b and registration mark 31c keyway 31b data θ a The rotation angle θ 3 for symbolizing the downstream side plate cylinder 31 with respect to the upstream side plate cylinder 31 of the adjacent printing unit 2 is known, so that the plate cylinder 31 is attached to each printing unit 2 After the two vertical frames 2a are placed, each of the plate cylinders 31 can be automatically positioned. Therefore, when the plate cylinder 31 is replaced, the stop time of the printing apparatus 1 is shortened, and work efficiency is good.

Next, a method of detaching the plate cylinder 31 from each printing unit 2 of the printing apparatus 1 will be described.

First, the first driving unit 42 is driven by the first driving unit 42 in a state where the printing plate roller 31 is supported by the respective support shafts 32a and the cart 5 that has not been loaded with the printing plate cylinder 31 is pushed to the lower portion of the printing unit 2. The lifting portion 40 is raised to the rising end position, and the plate cylinder 31 is supported by the lifting portion 40.

Then, the respective cylinders 32d are expanded and contracted, and the pair of support shafts 32a are retracted from both axial end portions of the plate cylinder 31, and the plate cylinder 31 is detached from the two vertical frames 2a. The plate cylinder 31 is delivered from the two vertical frames 2a to the lifting portion 40.

Thereafter, the first driving unit 42 drives the lifting unit 40 to descend, and the plate cylinder 31 is delivered to the cart 5 during the lowering.

Thereafter, the slide frame 54 of the cart 5 is slid with respect to the upper frame 51b toward the rear side of the cart entry direction, and then the hook member is released. Engagement between 48c and the above-described engaged member 52d.

Thereafter, the cart 5 is retracted from the lower side of the printing cylinder mounting position of the printing unit 2 toward the side, and the plate cylinder 31 is removed from the printing unit 2.

As described above, according to the first embodiment of the present invention, since the cart 5 can be moved forward and backward from the side with respect to the printing plate mounting position of the printing unit 2, it is possible to effectively utilize the upstream of the substrate conveying direction of the printing unit 2. Side and downstream side space. Moreover, only the plate roller positioning mechanism 57 and the cart positioning means 13 are used to bring the cart 5 into the printing plate mounting position of the printing unit 2, and the plate cylinder 31 can be mounted on the printing unit 2. Therefore, the operator H does not need to move to the upstream side and the downstream side of the substrate transport direction of the printing unit 2 after the cart 5 has entered the printing plate mounting position of the printing unit 2 to confirm the plate cylinder. The replacement operation of the plate cylinder 31 with respect to the position of the plate roller mounting position is simple.

When the slide frame 54 of the cart 5 is slid toward the cart entry direction with respect to the main frame 51, the plate cylinder 31 can be mounted in a state where the cart 5 has been brought under the plate roller mounting position. The position on the printing unit 2. On the other hand, when the slide frame 54 is slid toward the cart backward direction with respect to the main frame 51, the overall length of the cart 5 is shortened and compact. Therefore, when the plate cylinder 31 is conveyed by the cart 5, it can be rotated in a small circle, and the operation of the operator H on the cart 5 is simple.

Further, in the embodiment of the present invention, the registration mark 31c is printed at a position which is increased by a predetermined angle one by one from the upstream side plate cylinder 31 to the downstream side plate cylinder 31 of the printing unit 2 arranged side by side. . but The registration mark may be printed on a position at which the upstream side plate cylinder 31 and the downstream side plate cylinder 31 of the printing unit 2 disposed side by side are reduced by a predetermined angle one by one.

In the embodiment of the present invention, the registration mark 31c as the virtual reference mark is printed on the plate cylinder 31. However, it is also possible to use a dove (cross) mark positioning as a reference mark for aligning the true reference position of the printed pattern. In this case, the value of θ α in the above formula (1) is zero.

In the embodiment of the present invention, the downstream side plate cylinder 31 of the adjacent printing unit 2 is positioned with respect to the upstream side plate cylinder 31. However, it is not limited to the adjacent printing unit 2, and symbol positioning may be performed between the upstream side plate cylinder 31 and the downstream side plate cylinder 31 of the two printing units 2 in the plurality of printing units 2.

In the embodiment of the present invention, the printing apparatus 1 in which three printing units 2 are arranged in parallel is described. However, the printing unit 2 is not limited to three, and the present invention is applicable to a printing apparatus in which two or more printing units are arranged in parallel.

In the embodiment of the present invention, the plate cylinder 31 loaded on the plate cylinder rotating portion 50 of the cart 5 is manually rotated. However, it is also possible to provide a driving portion on the above-described cart to automatically rotate the plate cylinder.

In the embodiment of the present invention, it is set such that the predetermined position of the registration mark 31c in the plate cylinder 31 differs depending on the type of the plate cylinder 31. However, for example, the following setting may be made: although the type of the plate cylinder 31 is different, the registration mark 31c is exactly the same in the predetermined position in the plate cylinder 31. For example, although the type of the plate cylinder 31 is not Similarly, the upper end positions of all the plate cylinders 31 are the predetermined positions of the registration marks 31c.

When the position of the key groove 31b is detected by the keyway position detecting means 60, it is possible to do so by rotating the plate cylinder 31 detected by the rotary encoder 47a by rotating the plate cylinder 31 a plurality of times. The number of output pulses detected by the non-contact sensor 6 when the key groove 31b is detected when the plate cylinder 31 is rotated about the axis to a position where the registration mark 31c is located at a predetermined position. The correct angles θ 1 and θ 2 formed by the registration mark 31c and the key groove 31b around the axis are calculated.

In the embodiment of the present invention, the to-be-joined member 52d is provided on the cart 5, and the hook-shaped member 48c joined to the to-be-joined member 52d is provided in the unit-fixed side of the printing unit 2. However, the hook member 48c may be provided on the cart 5, and the member to be joined 52d may be provided on the unit fixing side of the printing unit 2.

(Second Embodiment of the Invention)

Fig. 20 shows a printing apparatus 1 according to a second embodiment of the present invention. The second embodiment differs from the first embodiment only in that the printing unit 2 is one. When the plate cylinder 31 is replaced, the plate cylinder 31 is rotatably supported by the two vertical frames 2a, and then relative to The substrate W sets the registration mark 31c and starts printing. Other aspects are the same as the first embodiment. Therefore, the detailed description below is omitted.

Therefore, according to the second embodiment of the present invention, even if the printing unit 2 has only one, the state in which the plate cylinder 31 has been loaded onto the cart 5 can be performed. It is known in advance that the position information of the registration mark 31c for positioning the plate cylinder 31 is changed, and after the cart 5 is pushed down to the printing unit 2, it is known that the registration mark 31c and the key groove 31b are around the axis. The time taken for the angle of formation is shortened, and the stop time of the printing apparatus 1 is shortened when the plate cylinder 31 is replaced, and the work efficiency is good.

-Industry practicality -

According to the present invention, a plurality of printing units having a plate cylinder supported by rotation are arranged side by side, and in a state in which the marks of the respective plate cylinders have been positioned, the rotation of the printing plate cylinders adheres to the outer periphery of each of the printing plate cylinders. A printing apparatus in which the ink on the surface is superimposed and transferred to the substrate in order to perform printing and a method of replacing the printing plate roll are useful.

4‧‧‧ Plate Roller Transfer Mechanism

6‧‧‧ Non-contact sensors

31‧‧‧Printing plate roller

31a‧‧‧Depression

31b‧‧‧ keyway

31c‧‧‧ Registration mark (virtual reference mark)

40‧‧‧ Lifting Department

45‧‧‧support plate

46‧‧‧Unit side runner

47a‧‧‧Rotary encoder

50‧‧‧Printing plate rotating part

55‧‧‧A pair of cart side rollers

56a‧‧‧Rectangle or square

56c‧‧‧ pole

56d‧‧‧protrusion

60‧‧‧Keyway position detection mechanism (keyway position detection means)

Claims (23)

A printing device comprising a printing unit, a cart and a control device, wherein a printing plate cylinder having a key groove in the printing unit is positioned by inserting a key on a fixed side of the unit into the key groove, and the printing plate of the printing unit is The fixed side of the unit is rotatably supported, and the cart moves the plate cylinder onto the printing unit or removes the plate roller from the printing unit, and the control means is connected to the Controlling the rotation of the plate cylinder on the printing unit, wherein the printing unit comprises a plate roller delivery means and a keyway position detecting means, and the plate roller delivery means enables the plate cylinder to be wound The plate cylinder is rotatably loaded, and the plate cylinder is transferred between the unit fixing side and the cart, and the keyway position detecting means detects the position of the key groove on the plate cylinder, in the printing plate The roller is printed with a mark for aligning the printing pattern, and the cart has a mark positioning means for loading the plate roller at a position determined in advance, the control means package a memory unit and a calculation unit, wherein the memory unit stores therein symbol position data of the plate cylinder loaded on the cart, and the calculation unit records the key groove position detected by the keyway position detecting means and the symbol stored in the memory unit The position data is calculated from the position of the key groove on the plate cylinder, and the control means is configured to: control the plate roller delivery means to rotate the plate cylinder so that the key groove corresponds to the key The plate cylinder is rotatably supported by the unit fixing side of the printing unit. The printing device according to claim 1, wherein the printing unit is provided in plurality, and each of the printing units is provided with one of the carts, and the mark printed on the plate cylinder is a reference mark. The memory portion memorizes a distance L between the transfer positions of the two printing units in the printing unit and the radius r of the printing plate cylinder, and the calculating portion divides two printing units of the plurality of printing units The angles θ 1 and θ 2 formed by the above-mentioned keyway and the reference mark in the upstream side plate cylinder and the downstream side plate cylinder around the axis are respectively calculated and used by the following formula (1). Calculating the rotation angle θ 3 of the downstream side plate cylinder for symbol positioning with respect to the upstream side plate cylinder, θ 3=2(n+1) π + θ 1- θ 2-L/r(n (1) The control means is configured to control the plate cylinder delivery means to rotate the downstream side plate cylinder by the rotation angle θ3 with respect to the upstream side plate cylinder. The printing device according to claim 2, wherein: the cart has a rod, and the lower end of the rod is supported by the rod to be swingable in the up and down direction, and the upper end of the rod is loaded by the swinging motion A portion of the outer peripheral surface of the above-described plate cylinder corresponding to the reference mark is in contact. The printing apparatus according to claim 2 or 3, wherein the cart moves the plate cylinder to a lower portion of each of the printing units or removes the plate cylinder from a lower portion of each of the printing units, the printing The plate roller delivery means includes a lifting portion that supports the plate cylinder from below to lift the plate cylinder, and the plate roller delivery means is configured to: transfer the plate roller at a lower end position of the lifting portion Transferring the plate cylinder between the means and the cart, and transferring the plate between the plate roller delivery means and the unit fixing side of each of the printing units at the rising end position of the lifting portion Roller. The printing device according to claim 4, wherein the lifting portion is configured such that the lifting portion is located on a plate cylinder loaded on the cart in a state where the cart is pushed under each of the printing units Bottom, when the lift is raised, the plate cylinder is taken up from the cart and the plate cylinder is raised. On the other hand, when it is lowered, the plate roller which has been fixed from the unit fixing side of each of the printing units is delivered. Give the above cart. The printing device according to claim 4, wherein the keyway position detecting means includes: a non-contact sensor that detects the key groove from one end in the axial direction of the plate cylinder, and a rotation that detects a rotation angle of the plate cylinder Angle detection unit, The keyway position detecting means is configured such that the plate cylinder position detecting means rotates the axis around the axis from the state in which the reference mark is at the predetermined position, and rotates until the non-contact sensor detects The rotation angle detecting unit detects the rotation angle from the key groove, thereby detecting the position of the key groove with respect to the reference mark. The printing device according to claim 1, wherein the printing unit is provided in plurality, and each of the printing units is provided with one of the carts, and the mark printed on the plate cylinder is a virtual reference mark. The virtual reference mark is printed on the upstream side of the printing unit from the side of the printing unit that is aligned with the true reference position for aligning the printing pattern, and is increased or decreased by a predetermined angle toward the downstream side of the printing plate. Positioning, the memory portion memorizes a distance L between the transfer positions of the two printing units in the printing unit and the radius r of the printing plate cylinder, and the calculating unit is to be in the plurality of printing units The angles θ 1 and θ 2 formed by the above-mentioned keyway and the virtual reference mark in the upstream side plate cylinder and the downstream side plate cylinder of the two printing units are calculated by the following equations, using the following formula (1) Calculating a rotation angle θ 3 for symbolizing the downstream side plate cylinder with respect to the upstream side plate cylinder, θ 3 = 2 (n + 1) π + θ 1- θ 2 -L/r+ θ α (n is an integer) (1) The control means is configured to control the plate roller delivery means to rotate the downstream side plate cylinder by the rotation angle θ 3 with respect to the upstream side plate cylinder. The printing device according to claim 7, wherein: the cart has a rod, and the lower end of the rod is supported by the rod to be swingable in an up and down direction, and the upper end of the rod is oscillated and loaded with the plate cylinder The portion of the outer peripheral surface corresponding to the reference mark is in contact. The printing apparatus according to claim 7 or 8, wherein the cart moves the plate cylinder to a lower portion of each of the printing units or removes the plate cylinder from a lower portion of each of the printing units, the printing The plate roller delivery means includes a lifting portion that supports the plate cylinder from below to lift the plate cylinder, and the plate roller delivery means is configured to: transfer the plate roller at a lower end position of the lifting portion Transferring the plate cylinder between the means and the cart, and transferring the plate between the plate roller delivery means and the unit fixing side of each of the printing units at the rising end position of the lifting portion Roller. The printing device according to claim 9, wherein the lifting portion is configured such that the lifting portion is located on a plate cylinder loaded on the cart in a state where the cart is pushed under each of the printing units Below, when the rise, the above print was taken from the above cart. The plate cylinder raises the above-mentioned plate cylinder, and on the other hand, when descending, the plate cylinder which has been passed from the unit fixing side of each of the printing units is delivered to the above-mentioned cart. The printing apparatus according to claim 9, wherein the keyway position detecting means includes: a non-contact type sensor that detects the key groove from one end in the axial direction of the plate cylinder, and a rotation that detects a rotation angle of the plate cylinder The angle detecting unit is configured to: the keyway position detecting means is configured to rotate the axis of the printing plate from the axis in a state where the virtual reference mark is at the predetermined position, and to rotate the disk to the non-rotation When the touch sensor detects the key groove, the rotation angle detecting unit detects the rotation angle, thereby detecting the position of the key groove with respect to the virtual reference mark. The printing device according to claim 6 or 11, wherein the non-contact sensor is provided at an intermediate portion of the printing unit in the vertical direction and on a side of the printing unit. The printing apparatus according to claim 1, wherein: on a unit fixing side of each of the printing units, a pair of support shafts are oppositely disposed at both end portions of the plate cylinder in the axial direction, and are provided with a cylindrical sleeve that is sleeved with each of the support shafts, wherein the pair of support shafts are joined to both end portions of the plate cylinder in the axial direction in an entering state to support the plate cylinder, and, on the other hand, The pair of support shafts are disengaged from the axis of the plate cylinder in a retracted state The plate cylinder is detached from the unit fixing side of each of the printing units at both end portions of the core direction, and the support shaft is configured to be engaged with the end portion of the plate cylinder in the axial direction. When the vehicle is retracted, the axial end portion of the plate cylinder comes into contact with the projecting end of the cylindrical sleeve, and the engagement with the end portion of the plate cylinder in the axial direction is released. The printing apparatus according to claim 13, wherein the cylindrical sleeve is configured to have a length adjustable in an axial direction of the plate cylinder. The printing device of claim 1, wherein: the cart comprises a cart positioning means and a plate roller positioning means, and the cart positioning means and the unit-fixing side interlocking action are used to enter the printing unit from the side The cart below the plate loading position is positioned without moving under the plate roller mounting position, the plate roller positioning means being arranged to be movable in the advancing and retracting direction of the cart, the plate roller The cartridge positioning means contacts the end of the plate cylinder with the plate roller positioning means to position various plate cylinders of different lengths so as to when the cart enters the mounting position of the plate cylinder The plate cylinder on the cart can be mounted on the printing unit described above. A printing device as recited in claim 15 wherein: The cart includes a main frame and a sliding frame, the main frame constituting a skeleton of the cart, the sliding frame is disposed at an upper portion of the main frame, and is slidable in a forward and backward direction of the cart for loading the plate cylinder, The positioning of the plate cylinder by the plate roller positioning means is performed in a state in which the slide frame has been slid toward the cart entry direction with respect to the main frame. The printing device of claim 15 or 16, wherein: the plate cylinder positioning means comprises: a marking member, a sliding plate and a positioning plate extending in the advancing and retracting direction of the cart, and corresponding to the loaded various printing The positions of the ends of the plate cylinder are respectively printed with indicia, the slide plate being slidable along the marking member, the positioning plate being disposed on the sliding plate, the end portion of the plate cylinder being brought into contact when loading the plate cylinder Positioning plate. The printing apparatus according to claim 17, wherein one end of the positioning plate is pivotally supported by the slide plate in a state where the positioning plate is biased upward by a biasing member of the plate. The printing apparatus according to claim 15, wherein the interlocking operation between the cart positioning means and the unit fixing side is a joining operation. The printing apparatus according to claim 19, wherein the engaging operation is performed by a hook member and a member to be joined, and the hook member is provided on one of the cart positioning means and the unit fixing side, and the hook member Applying a force member to rotate the hook member, The member to be joined is provided on the other of the cart positioning means and the unit fixing side, and the engaged member presses the hook member by an entering operation of the cart toward a position below the mounting position of the plate cylinder. The hook member is rotationally engaged against the force applied by the biasing member of the hook member. A printing plate cylinder replacing method of a printing apparatus, characterized in that a printing plate cylinder is mounted on a cart, and a mark for aligning a printing pattern is used at a predetermined position, and then supported by the printing unit After the rotating plate cylinder is detached from the printing unit, the cart is pushed to the printing unit, and then the plate cylinder is delivered from the cart to the printing unit by means of a plate roller delivery means. The position of the keyway of the plate cylinder is detected on the side of the fixed side of the unit, and the control means calculates the above information according to the size information of the plate cylinder and the mark position data of the plate cylinder loaded on the cart. The position of the keyway on the plate cylinder and the angle between the marks about the axis, and then the plate cylinder is rotated by the plate roller transfer means, so that the key groove is fixed to the unit of the printing unit Corresponding to the side key, and after the key is inserted into the keyway to position the plate cylinder, the plate roller can be supported by the unit fixing side of the printing unit. Turn. A method of replacing a printing plate cylinder of a printing apparatus according to claim 21, wherein: the mark printed on the plate cylinder is a reference mark, and the standard mark is placed at a predetermined position to load the plate roll. Providing, on the cart, the cart with respect to each of the plurality of printing units, wherein the distance L between the transfer positions of the substrates of the two printing units of the plurality of printing units is determined by the control means The radius r of the plate cylinder and the reference mark position data of the plate cylinder loaded on the cart, the upstream side plate cylinder and the downstream side plate of the two printing units of the plurality of printing units The angles θ 1 and θ 2 formed by the keyway position on the roller and the reference mark are calculated respectively around the axis, and the formula (1) shown below is used to be opposite to the upstream side plate roller pair. The rotation angle θ 3 of the downstream side plate roller mark positioning is calculated, θ 3 = 2 (n + 1) π + θ 1- θ 2-L / r (n is an integer) (1) each of the above printing units The fixed side of the unit supports the above-mentioned plate cylinder After transfer, the downstream plate cylinder with respect to the upstream side of the rotation of the plate cylinder rotational angle θ 3. A method of replacing a printing plate cylinder of a printing apparatus according to claim 21, wherein: the mark printed on the plate cylinder is a virtual reference mark printed on the true relative to the printing pattern for alignment The reference position is at a position where the upstream side of the printing unit of the printing unit disposed side by side is increased or decreased toward the downstream side of the printing plate cylinder by a predetermined angle, so that the virtual reference mark is at a predetermined position. The plate cylinder is loaded on the cart, and the cart is placed on standby with respect to each of the plurality of printing units, and the transfer of the substrates of the plurality of printing units in the plurality of printing units is performed by the control means. a distance L between the positions, a radius r of the above-described plate cylinder, a virtual reference mark position data of the plate cylinder loaded on the cart, and an upstream side plate cylinder for aligning the printing pattern the downstream side of the plate cylinder correction reference position correction angle θ α in the true reference position, the plurality of the above-described upstream-side printing unit plate cylinder and the downstream-side printing unit printing two Around the axis of rotation between a reference mark and the imaginary position of the keyway on the cartridge angle θ 1, θ 2 are calculated, and (1) with respect to the upstream side of the downstream plate cylinder according to the equation shown below The rotation angle θ 3 of the side plate cylinder for symbol positioning is calculated, θ 3 = 2 (n + 1) π + θ 1- θ 2-L / r + θ α (n is an integer) (1) each of the above printing After the unit fixing side of the unit supports the rotation of the plate cylinder, the downstream side plate cylinder is rotated by the rotation angle θ 3 with respect to the upstream side plate cylinder.