Full-automatic efficient printing plate conveying device and replacing system

Abstract

The invention discloses a full-automatic efficient printing plate conveying device and replacing system, and belongs to the field of printing. The printing conveying device comprises an upper plate conveying part and a lower plate conveying part; the upper plate conveying part comprises an obliquely-arranged loading space, and the loading space is provided with a discharging mechanism used for controlling new printing plates to be sequentially discharged from top to bottom. The lower plate conveying part comprises an outer frame, an inner frame and an inner frame driving piece; the outer frame is provided with a guide roller used for guiding a new printing plate and a positioning structure used for positioning the new printing plate, and the inner frame is further provided with an adsorption mechanism used for adsorbing the new printing plate. The discharging and conveying mechanism is used for conveying the old printing plate along the outer side surface of the inner frame and the top surface of the loading space, and the top surface of the loading space is further provided with a retainer used for preventing the old printing plate from sliding off. The printing plate assembling and disassembling device can replace manpower to convey new and old printing plates, the new printing plates can be installed, the old printing plates can be disassembled, then manual printing plate disassembling and assembling work is completely replaced, and double improvement of efficiency and precision is achieved.

Description

Technical Field

[0001] The invention relates to the field of printing technology, including traditional printing and metal printing, and in particular to a fully automatic and efficient printing plate conveying device and a replacement system. Background Art

[0002] Plate replacement is a very important part of the working process of modern printing equipment, and the speed and accuracy of plate replacement are important factors affecting printing production efficiency and production quality.

[0003] The traditional plate changing method relies on manual operation, but this requires high technical proficiency of the operator, otherwise it is difficult to ensure the speed and accuracy of plate changing.

[0004] The manual plate changing process includes feeding and installing new plates, disassembling and unloading old plates. For the plate changing operators, they not only need to disassemble and install the plates, but also move the plates, which makes the labor intensity high and time-consuming. However, this plate changing method in which operators need to frequently put in new plates and take out old plates every day is somewhat different from the digitalization and intelligent development goals of the printing industry. Especially in situations where plates need to be changed frequently, long plate changing work will also reduce the work efficiency of the staff, and there are also safety risks in the plate changing process. Summary of the invention

[0005] In view of the problem that the printing plate replacement process in the prior art relies on manual labor, the purpose of the present invention is to provide a fully automatic and efficient printing plate conveying device and replacement system to at least partially solve the above problem.

[0006] To achieve the above object, the technical solution of the present invention is: In a first aspect, the present invention provides a fully automatic and efficient printing plate conveying device, comprising a frame, and an upper plate conveying part and a lower plate conveying part installed on the frame and connected to each other; the upper plate conveying part comprises a loading space for loading new printing plates, the loading space is arranged obliquely so that the new printing plates loaded therein can be discharged by gravity, and the loading space is provided with a discharge mechanism for controlling the discharge of new printing plates from top to bottom in sequence; The plate feeding part comprises an outer frame, an inner frame rotatably connected to the outer frame, and an inner frame driving member connected between the outer frame and the inner frame; a temporary storage space for temporarily storing a new printing plate is formed between the outer frame and the inner frame, a positioning structure for positioning the new printing plate at a predetermined position in the temporary storage space is further provided on the outer frame, a guide roller for guiding the new printing plate to enter the temporary storage space is provided on the outer frame, and an adsorption mechanism for adsorbing the new printing plate is further provided on the inner side surface of the inner frame; The frame is also provided with a discharge conveying mechanism for conveying the old printing plates along the outer surface of the inner frame and the top surface of the loading space.

[0007] In some preferred embodiments, the loading space includes a top frame, a fixed feed roller, a movable feed roller and a roller drive; the fixed feed roller is arranged on a lower side of the top frame and is fixed relative to the position of the top frame, the movable feed roller is located on a lower side of the fixed feed roller and is adjustable in position, each new printing plate is arranged in a stacked state between the fixed feed roller and the movable feed roller, and the roller drive is used to drive the movable feed roller to move away from or close to the fixed feed roller; The discharge mechanism includes a limit front gauge and a front gauge driving member; the limit front gauge is movably connected relative to the top frame, and the front gauge driving member is used to drive the limit front gauge to move relative to the top frame, and the limit front gauge blocks or releases the discharge path of the top new printing plate through its movable movement.

[0008] In some preferred embodiments, the front limit gauge is used to allow the free end of the new printing plate to be spherical, hemispherical or arc-shaped.

[0009] In some preferred embodiments, the loading space is provided with a partition component for separating two adjacent new printing plates; the partition component comprises a brush and / or an air nozzle.

[0010] In some preferred embodiments, a slope for guiding the old printing plates for calculation and stacking is provided at the lower end of the outer side of the top frame of the loading space; and / or a stopper for preventing the old printing plates from sliding is provided at the outer side of the top frame of the loading space.

[0011] In some preferred embodiments, the unloading conveying mechanism is provided on the outer surface of the inner frame and the top surface of the loading space; the unloading conveying mechanism includes a floating conveying roller and a roller driving component, and the floating conveying roller is used to change the distance between it and the outer surface of the inner frame or the top surface of the loading space under the drive of the roller driving component, so as to facilitate the unloading of the old printing plate.

[0012] In a second aspect, the present invention also includes a fully automatic and efficient printing plate changing system, including a printing plate fixing and bending device and the fully automatic and efficient printing plate conveying device as described above; the printing plate fixing and bending device includes a printing plate cylinder, a bite plate clamp, a drag plate clamp, a plate protection rubber roller and a plate pressing rubber roller; the bite plate clamp and the drag plate clamp are arranged on the surface of the printing plate cylinder, and the bite plate clamp and the drag plate clamp are both equipped with a plate clamp driving member for changing their respective angles relative to the surface of the printing plate cylinder; the plate protection rubber roller and the plate pressing rubber roller The rollers are movably mounted on the frame, and the plate protection rubber roller and the plate pressing rubber roller are both provided with a rubber roller driving member for changing their respective distances relative to the plate cylinder; the plate protection rubber roller and the plate pressing rubber roller cooperate with the plate cylinder, the bite plate clamp and the drag plate clamp to make the new plate close to the plate cylinder and bend the new plate at the plate bite, and the plate protection rubber roller also guides the old plate drag to enter the outer surface of the inner frame of the lower plate delivery part under the action of the rubber roller driving member.

[0013] In some preferred embodiments, the upper plate feeding part and the lower plate feeding part are both movable relative to the plate cylinder, the upper plate feeding part is configured with a first driving mechanism for driving the movement, and the lower plate feeding part is configured with a second driving mechanism for driving the movement, so that the upper plate feeding part and the lower plate feeding part can move away from or approach the plate cylinder and related components.

[0014] In some preferred embodiments, the first driving mechanism includes a swing arm rotatably connected to the frame and a swing arm driving member fixed to the frame and used to drive the swing arm to swing, and the loading space is fixedly connected to the swing arm, or the first driving mechanism includes a moving component connected to the frame and a driving element fixed to the frame and used to drive the moving component to move, and the loading space is fixedly connected to the moving component; the second driving mechanism includes a slider slidably connected to the frame and a slider driving member fixed to the frame and used to drive the slider to move up and down, and the outer frame is fixedly connected to the slider.

[0015] In some preferred embodiments, a detection sensor is also included, wherein the detection sensor is used to detect the status of the bite plate clamp and the drag plate clamp, and is used to detect the position of the bite and drag of the new printing plate and the old printing plate.

[0016] By adopting the above technical solution, the beneficial effect of the present invention is that in the fully automatic and efficient printing plate conveying device provided by the present invention, due to the arrangement of the upper plate conveying part and the lower plate conveying part, new and old printing plates can be stored and conveyed without relying on manual plate handling. In the fully automatic and efficient printing plate replacement system provided by the present invention, the printing plate fixing and bending device can install the new printing plate and disassemble the old printing plate in cooperation with the fully automatic and efficient printing plate conveying device, thereby completely replacing manual plate disassembly and assembly work, thereby achieving a dual improvement in efficiency and precision. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The figure is a schematic diagram of the structure of a fully automatic and efficient printing plate changing system in the present invention.

[0018] Figure 2 It is a top view of the upper plate feeding part in the present invention.

[0019] Figure 3 It is a bottom view of the upper plate feeding part in the present invention.

[0020] Figure 4 It is a schematic structural diagram of the top frame in the present invention.

[0021] Figure 5 It is the right side view of the lower plate feeding part in the present invention.

[0022] In the picture: 100-upper plate feeding part, 101-new printing plate, 102-support plate, 103-support roller, 104-brush, 105-suction nozzle, 106-fixed feeding roller, 107-movable feeding roller, 108-roller driving part, 109-swing arm driving part, 110-swing arm, 111-upper floating conveying roller, 112-upper unloading roller, 113-guide plate, 114-limiting front gauge, 115-top frame, 116-upper support rod, 117-stopper, 118-upper unloading wheel shaft, 119-upper floating conveying roller, 120-upper unloading roller, 121-upper roller driving part, 122-double sheet detection sensor; 200-lower plate delivery part, 201-guide roller, 202-inner frame driving member, 203-outer frame, 204-positioning front gauge, 205-slider, 206-slider driving member, 207-old printing plate, 208-lower floating conveying roller, 209-plate receiving roller, 210-lower unloading roller, 211-inner frame, 212-suction nozzle, 213-lower support rod, 214-fixing rod, 215-turning shaft; 300-plate fixing and bending device, 301-plate cylinder, 302-drag plate clamp, 303-bite plate clamp, 304-plate pressing rubber roller, 305-plate protecting rubber roller, 306-bite detection sensor, 307-drag detection sensor. DETAILED DESCRIPTION

[0023] The specific embodiments of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0024] It should be noted that, in the description of the present invention, the directions or positional relationships indicated by the terms "up", "down", "left", "right", "front", "back", etc. are descriptions of the structure of the present invention based on the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0025] The "first" and "second" in this technical solution are only used to distinguish the names of the same or similar structures, or corresponding structures with similar functions, and are not an arrangement of the importance of these structures, nor do they have a ranking, comparison of size, or other meanings.

[0026] In addition, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, the connection can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be a connection between the two structures. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood based on the overall idea of ​​the present invention and the specific context of the present solution.

[0027] Example 1 A fully automatic and efficient printing plate conveying device, such as Figure 1-5 As shown, it includes a frame and an upper plate feeding part 100 and a lower plate feeding part 200 installed on the frame, and the lower plate feeding part 200 is connected between the upper plate feeding part 100 and the plate cylinder 301 of the plate to be replaced. The upper plate feeding part 100 is used to store the new plate 101 to be replaced and the old plate 207 to be replaced, and the lower plate feeding part 200 is used to transfer the new plate 101 to the plate cylinder 301, and transfer the old plate 207 replaced by the plate cylinder 301 to the upper plate feeding part 100.

[0028] The upper plate feeding part 100 includes a loading space for loading a new printing plate 101. The loading space includes a top frame 115, which is arranged in an inclined manner, and its lower end faces the side where the printing plate cylinder 301 is located.

[0029] The loading space also includes a fixed feed roller 106, a movable feed roller 107 and a roller drive 108. Brackets are fixed on both sides of the bottom width direction of the top frame 115, and the two ends of the fixed feed roller 106 are rotatably connected to the two brackets, and the position of the fixed feed roller 106 relative to the top frame 115 remains unchanged. The two ends of the movable feed roller 107 are rotatably connected to the base, and then the two bases are slidably connected to the two brackets, the sliding direction of the base is perpendicular to the top frame 115, and the fixed feed roller 106 is located in the sliding direction of the base, and the fixed feed roller 106 is located between the movable feed roller 107 and the top frame 115. The roller drive 108 is configured as a cylinder, a hydraulic cylinder or an electric cylinder, which is fixed on the bracket, and the output end of the roller drive 108 is fixedly connected to the above-mentioned base, so that the distance between the movable feed roller 107 and the fixed feed roller 106 can be changed by the telescopic movement of the roller drive 108. Multiple new printing plates 101 arranged in a stacked shape are located between the movable feeding roller 107 and the fixed feeding roller 106. The fixed feeding roller 106 and the movable feeding roller 107 are preferably arranged on one side of the lower end of the top frame 115, and support plates 102 are fixed on both sides of the bottom surface of the upper end of the top frame 115 along its width direction, and a support roller 103 is rotatably connected between the two support plates 102, and the new printing plate 101 is supported by the cooperation of the support roller 103, the fixed feeding roller 106 and the movable feeding roller 107. It is easy to understand that the fixed feeding roller 106 can also be omitted, and the new printing plate 101 can be pressed against the bottom surface of the top frame 115.

[0030] The loading space is also provided with a discharge mechanism for controlling the discharge of new printing plates 101 from top to bottom in sequence.

[0031] In this embodiment, the discharge mechanism includes a front limit gauge 114 and a front gauge driving member (not shown in the figure). The front limit gauge 114 is configured as a rod-shaped member, and its lower end is rotatably connected to a positioning bracket (not shown in the figure), and the positioning bracket is fixedly connected to the top frame 115. The front gauge driving member is configured as a cylinder, a hydraulic cylinder or an electric cylinder, one end of which is hinged on the positioning bracket and the other end is hinged to the front limit gauge 114. In addition, the rotation connection point of the front limit gauge 114 on the positioning bracket is located at the lower front side of the discharge direction of the new printing plate 101. It is easy to understand that the front limit gauge 114 can also be movably installed on the positioning bracket by a sliding connection, for example, its sliding direction is perpendicular to the new printing plate 101.

[0032] In this way, the front limit gauge 114 is driven to rotate through the telescopic movement of the front limit gauge driving member, so that the position of the free end of the front limit gauge 114 changes. When the free end of the front limit gauge 114 blocks the position of the new printing plate 101 at the top, the new printing plate 101 at the bottom is also blocked at the same time; based on this, when the front limit gauge 114 is slightly rotated to the position where its free end is lower than the new printing plate 101, the new printing plate 101 at the top can be discharged smoothly, while the other new printing plates 101 continue to be blocked. Then the front limit gauge 114 rotates in the opposite direction to the initial position and continues to block all the new printing plates 101. The roller driving member 108 drives the movable feeding roller 107 to approach the fixed feeding roller 106, so that the new printing plate 101 at the top rises to the top to fill the position. In this embodiment, the free end of the front limit rule 114 can be spherical, hemispherical or arc-shaped to facilitate the passage of the top new printing plate 101 and prevent two new printing plates 101 from passing at the same time.

[0033] Separation components for separating the new printing plates 101 from each other are also provided on both sides of the top frame 115 in the width direction. The separation component is, for example, a brush 104, which separates two adjacent new printing plates 101 from each other through its bristles, thereby reducing the contact area between the adjacent new printing plates 101. The separation component can also be an air nozzle 105, which blows air to the new printing plates 101 through the air nozzle 105, and separates the two adjacent new printing plates 101 through the fast-flowing airflow, thereby reducing the contact area between the adjacent new printing plates 101.

[0034] A plurality of upper support rods 116 arranged along the length direction of the top frame 115 are fixed inside the frame hole, and the plurality of upper support rods 116 are arranged at intervals along the width direction of the top frame 115. A plurality of stoppers 117, such as plastic sheets, are arranged at intervals along the length direction of the top surface of the upper support rods 116 to prevent the replaced old printing plates 207 from sliding off, and the stoppers 117 are arranged in an inclined shape.

[0035] The upper plate feeding part 100 also includes a guide plate 113, which is arc-shaped, for example, fixedly installed relative to the top frame 115, and its arc surface is located at the lower side of the discharge position of the new printing plate 101, so that the new printing plate 101 can be better transported to the lower plate feeding part 200.

[0036] The lower plate delivery part 200 includes an outer frame 203, an inner frame 211 and an inner frame driving member 202. The outer frame 203 is arranged roughly vertically, and a pivot 215 is fixedly installed on the upper end of the outer frame 203. The inner frame 211 is provided with an axial hole adapted to the pivot 215, so that the inner frame 211 can rotate relative to the outer frame 203. The inner frame driving member 202 is configured as a cylinder, a hydraulic cylinder or an electric cylinder, and its two ends are hinged on the outer frame 203 and the inner frame 211 respectively.

[0037] When the inner frame 211 is located in the outer frame 203, a temporary storage space for temporarily storing the new printing plate 101 is formed between the outer frame 203 and the inner frame 211. A guide roller 201 for guiding the new printing plate 101 into the temporary storage space is installed on the upper end of the outer frame 203 facing the side of the upper plate feeding part 100. The lower end of the outer frame 203 is also provided with a positioning structure for positioning the new printing plate 101 at a predetermined position in the temporary storage space, such as a positioning front rule 204. When the new printing plate 101 enters the temporary storage space, it will be at a determined position under the restriction of the positioning front rule 204, that is, in the width and thickness directions, the new printing plate 101 is at a determined position in the temporary storage space. The positioning front rule 204 can be, for example, a number of positioning blocks arranged on the outer frame 203.

[0038] The inner surface of the inner frame 211 is also provided with a suction mechanism for sucking the new printing plate 101 in the temporary storage space, such as a suction nozzle 212, which is usually provided in multiple and dispersed arrangements so as to evenly apply suction force to the new printing plate 101. In this way, the new printing plate 101 entering the temporary storage space can be sucked by the suction nozzle 212 on the inner frame 211, and then driven by the inner frame driving member 202, the new printing plate 101 is brought to another position, that is, the position where the printing plate cylinder 301 is docked.

[0039] Several lower support rods 213 arranged along the length direction are fixed inside the inner frame 211, and the several lower support rods 213 are arranged at intervals along the width direction of the inner frame 211. A fixing rod 214 is provided at the lower end of the top surface of the inner frame 211, and one or more plate receiving rollers 209 are installed on the fixing rod 214, so that the old printing plate 207 replaced by the plate cylinder 301 can be transported to the outer surface side of the inner frame 211 under the guidance of the plate receiving rollers 209.

[0040] In addition, both the upper plate feeding part 100 and the lower plate feeding part 200 are configured as unloading conveying mechanisms. The unloading conveying mechanism equipped in the lower plate feeding part 200 is used to transfer the replaced old printing plate 207 along the outer surface of the inner frame 211 to the upper plate feeding part 100, and the unloading conveying mechanism equipped in the upper plate feeding part 100 is used to transfer the replaced old printing plate 207 upward along the top surface of the loading space (and the top frame 115), so that the old printing plate 207 is temporarily placed on the top frame 115, and the old printing plate 207 is prevented from sliding down by the stopper 117. Usually, the upper plate feeding part 100 and the lower plate feeding part 200 can be equipped with more than one unloading conveying mechanism.

[0041] For the upper plate feeding part 100, the unloading conveying mechanism includes an upper floating conveying roller 119 and an upper roller driving member 121. The upper floating conveying roller 119 is installed on a bracket to which it belongs, and a motor (not shown in the figure) for driving the upper floating conveying roller 119 to rotate is fixed on the bracket, and the bracket is fixed to the output end of the upper roller driving member 121. The upper roller driving member 121 can be configured as a cylinder, a hydraulic cylinder or an electric cylinder. The upper roller driving member 121 is fixed on the frame or connected to the top frame 115 through a mounting frame. The extension and retraction direction of the upper pressure roller driving member 121 is roughly perpendicular to the top frame 115, so that the distance between the upper floating conveying pressure roller 119 and the top frame 115 can be controlled by the extension and retraction movement of the upper pressure roller driving member 121. When the replaced old printing plate 207 is conveyed to the top surface side of the top frame 115, the upper floating conveying pressure roller 119 can apply a certain pressure to the old printing plate 207, and then the old printing plate 207 is driven to move on the top surface side of the top frame 115 under the rotation and pressure of the upper floating conveying pressure roller 119. In order to reduce the friction between the old printing plate 207 and the top frame 115, an upper unloading roller 120 is also configured. There are usually multiple upper unloading rollers 120 and they are arranged at intervals on the upper unloading wheel shaft 118. The upper unloading wheel shaft 118 is rotatably connected relative to the top frame 115, and the circumferential side wall of the upper unloading roller 120 protrudes from the upper floating conveying roller driving member on the top surface of the upper floating conveying roller top frame 115. The replaced old printing plate 207 is located between the upper floating conveying roller 119 and the upper unloading roller 120, thereby reducing the friction during the unloading and conveying of the old printing plate 207. It is easy to understand that the upper floating conveying roller 119 can be replaced by a pressure wheel, and the upper unloading roller 120 can also be replaced by a conveying roller.

[0042] Similarly, for the lower plate delivery part 200, the unloading and conveying mechanism includes a lower floating conveying roller 208 and a lower roller driving member (not shown in the figure). In this way, the distance between the lower floating conveying roller 208 and the inner frame 211 is controlled by the telescopic movement of the lower roller driving member, so that the replaced old printing plate 207 moves on the outer surface of the inner frame 211 under the pressure and rolling action of the lower floating conveying roller 208. Similarly, it also includes a lower unloading roller 210, which is rotatably connected to the inner frame 211 through a wheel shaft. The lower floating conveying roller 208 can also be replaced by a pressure wheel, and the lower unloading roller 210 can also be replaced by a conveying roller.

[0043] It is easy to understand that the upper plate feeding part 100 and the lower plate feeding part 200 may be equipped with more than one unloading conveying mechanism. When there are more than two, they are arranged at intervals along the conveying direction of the old printing plate 207. For example, the upper floating conveying roller 111, the upper unloading roller 112 and the corresponding upper roller driving member are arranged at the lower end of the upper plate feeding part 100.

[0044] It is easy to understand that the lower end of the top surface of the top frame 115 is provided with an inclined surface for guiding the old printing plate 207. Since the printing plate has a certain rigidity, after the old printing plate 207 is transported to the top frame 115, its tail end will be lifted up on the inclined surface, thereby reserving space for the subsequent insertion of the old printing plate 207. Similarly, the lower end of the outer surface of the inner frame 211 can also be provided with an inclined surface.

[0045] It is easy to understand that a double sheet detection sensor 122 is provided at the lower end of the bottom surface of the top frame 115, which is used to detect whether two new printing plates 101 pass through at the same time. If it is detected that two new printing plates 101 pass through at the same time, the lower plate delivery part 200 stops conveying the new printing plate 101.

[0046] Example 2 A fully automatic and efficient plate changing system, such as Figure 1 As shown, the printing plate fixing and bending device 300 and the fully automatic and efficient printing plate conveying device disclosed in Example 1. The printing plate fixing and bending device 300 includes a printing plate cylinder 301 and a bite plate clamp 303, a drag plate clamp 302, a plate guard rubber roller 305 and a plate pressing rubber roller 304.

[0047] The bite plate clamp 303 and the drag plate clamp 302 are both arranged on the surface of the plate cylinder 301, and the structures of the bite plate clamp 303 and the drag plate clamp 302 are the same. Taking the bite plate clamp 303 as an example, it includes a plate clamp body, which is usually in a long strip shape and arranged along the axial direction of the plate cylinder 301. A pivot is fixed at one end of the plate clamp body in the width direction. The pivot is rotatably connected to the mounting groove opened on the surface of the plate cylinder 301, and the rotation axis of the plate clamp body is parallel to the axis of the plate cylinder 301. The bite plate clamp 303 is provided with a plate clamp driving member for changing the angle of its surface relative to the surface of the plate cylinder 301, such as a motor, which can be fixedly mounted on the axial end face of the plate cylinder 301, and the motor is mechanically connected to the pivot fixed on the plate clamp body, so that the opening angle of the plate clamp body relative to the surface of the plate cylinder 301 can be changed by the rotation of the motor, thereby biting or releasing the printing plate; or the plate clamp driving member can also be a cam rocker, and there will be a cam groove on the frame. When the plate cylinder 301 rolls, the swing of the cam rocker is controlled to realize the opening and closing of the plate clamp body. The same is true for the drag plate clamp 302, which will not be repeated. Of course, the plate clamp driving member can also be a structure that outputs linear motion, such as a cylinder, a hydraulic cylinder or an electric cylinder, and its two ends are respectively connected to the plate cylinder 301 and the plate clamp body.

[0048] The plate guard rubber roller 305 and the plate pressing rubber roller 304 are both parallel to the cross-section of the plate cylinder 301. The plate guard rubber roller 305 and the plate pressing rubber roller 304 are rotatably installed on their respective brackets. The brackets to which both belong are slidably or swingably connected to the frame equipped with the fully automatic and efficient plate conveying device. When the brackets to which both belong slide or swing on the frame, their respective distances relative to the plate cylinder 301 can be changed.

[0049] Correspondingly, the plate-protecting rubber roller 305 and the plate-pressing rubber roller 304 are both equipped with a rubber roller driving member for changing their respective distances relative to the plate cylinder 301, such as a cylinder, a hydraulic cylinder or an electric cylinder. Taking the plate-protecting rubber roller 305 as an example, when the plate-protecting rubber roller 305 moves in a straight line direction (for example, coincides with the radial direction of the plate cylinder 301), the rubber roller driving member can be fixedly installed on the frame equipped with the fully automatic and efficient plate conveying device, and its output end is fixedly connected to the bracket to which the plate-protecting rubber roller 305 belongs; when the movement direction of the plate-protecting rubber roller 305 is curved, the two ends of the rubber roller driving member are respectively hinged on the frame equipped with the fully automatic and efficient plate conveying device and hinged on the bracket to which the plate-protecting rubber roller 305 belongs. The same is true for the plate-pressing rubber roller 304.

[0050] The plate guard rubber roller 305 is arranged at the downstream side of the docking position between the lower plate feeding part 200 and the plate fixing and bending device 300 (the downstream side refers to the side away from the docking position along the movement direction of the new plate 101). Through the arrangement of the plate guard rubber roller 305, when the new plate 101 is bitten by the bite plate clamp 303 and wound counterclockwise, the plate guard rubber roller 305 can apply bending pressure to the new plate 101, so that the new plate 101 can be wound better, and at the same time, the bite of the new plate 101 is closely attached to the plate cylinder 301 and bent. The plate pressing rubber roller 304 is arranged at the downstream side of the plate guard rubber roller 305, and the plate pressing rubber roller 304 further squeezes the new plate 101 so that it fits tightly with the surface of the plate cylinder 301.

[0051] It also generally includes a detection sensor for detecting the status of the bite plate clamp 303 and the drag plate clamp 302 (whether they are biting the printing plate). For example, there are two detection sensors, namely a bite detection sensor 306 and a drag detection sensor 307. The bite detection sensor 306 is arranged downstream of the docking position between the lower plate feeding part 200 and the printing plate fixing and bending device 300, and upstream of the plate guard rubber roller 305, so as to detect whether the head of the new printing plate 101 is bitten when it is installed, and whether the tail and head of the old printing plate 207 are released when the old printing plate 207 is removed; the drag detection sensor 307 is arranged downstream of the plate pressing rubber roller 304, so as to detect whether the tail of the new printing plate 101 is bitten when it is installed. The above-mentioned detection sensors are also used to detect the bite and drag position of the new printing plate 101 and the old printing plate 207. The working process of the fully automatic and efficient printing plate replacement system disclosed in the embodiment of the present invention is as follows: 1) Delivery of new printing plates First, according to the production plan for the day, the operator puts the multiple new printing plates 101 to be used into the upper plate feeding part 100 in sequence (the first new printing plate 101 to be used is placed on the top), and the new printing plates 101 are separated by partition components.

[0052] Under the action of the inner frame driver 202, the inner frame 211 swings downward around the flip axis 215 and cooperates with the outer frame 203 (recorded as the initial state, at which time the inner frame 211 and the outer frame 203 are in a cooperative state, forming a temporary storage space that can temporarily store the new printing plate 101). The limit front rule 114 swings downward under the action of the front rule driver, giving way to the downward movement of the top new printing plate 101, and only allowing the top new printing plate 101 to pass. After the new printing plate 101 is discharged from the loading space, it slides down between the outer frame 203 and the inner frame 211 under the guidance of the guide roller 201, and its front end and left and right sides are positioned by the positioning front rule 204. Then the suction nozzle 212 on the inner frame 211 absorbs the new printing plate 101, and drives the new printing plate 101 to flip under the drive of the inner frame driver 202, so that the new printing plate 101 is roughly tangent to the printing plate cylinder 301.

[0053] 2) Installation of new printing plates After the new printing plate 101 is driven to the installation position, the printing plate cylinder 301 also rotates to the installation position. At this time, the bite plate clamp 303 on the printing plate cylinder 301 is below the extension line of the new printing plate 101. The bite detection sensor 306 detects whether the printing plate cylinder 301 has rotated to the plate loading position, and at the same time confirms whether there is an old printing plate 207 to be removed on the printing plate cylinder 301. If not, the bite plate clamp 303 opens, and the suction nozzle 212 changes from suction to blowing. The new printing plate 101 slides to the bite position of the bite plate clamp 303 under the action of gravity, and then the bite plate clamp 303 closes. After closing, the bite detection sensor 306 detects again whether the head of the new printing plate 101 has entered the bite plate clamp 303 and been clamped. After confirming that the new printing plate 101 is engaged, the printing plate cylinder 301 starts to rotate slowly (counterclockwise), and the plate protection rubber roller 305 swings, protecting the new printing plate 101 while bending the new printing plate 101. The plate pressing rubber roller 304 also squeezes the new printing plate 101 under the action of its associated rubber roller driving member, so that the new printing plate 101 is closely attached to the surface of the printing plate cylinder 301, while maintaining a certain tension. When the printing plate cylinder 301 rotates in the reverse direction to a position where the drag plate clamp 302 corresponds to the tail of the new printing plate 101, the drag plate clamp 302 opens, and the tail end of the new printing plate 101 falls into the drag plate clamp 302, and the drag plate clamp 302 closes, and the drag detection sensor 307 detects whether the tail of the new printing plate 101 has been clamped by the drag plate clamp 302. After confirmation, the plate guarding rubber roller 305 and the plate pressing rubber roller 304 are reset, the inner frame 211 swings down to return to the initial position, and the installation of the new printing plate 101 is completed.

[0054] 3) Disassembly of old printing plates When the old printing plate 207 needs to be disassembled, the printing plate cylinder 301 is first rotated to make the drag plate clamp 302 located at the disassembly position and the inner frame 211 swing to the disassembly position. At the disassembly position, the tangent line of the sliding roller 214 and the tangent line of the drag plate clamp 302 are on the same extension line. The drag plate clamp 302 is released, and the tail of the old printing plate 207 pops out. The bite detection sensor 306 detects whether the tail of the old printing plate 207 pops out from the drag plate clamp 302. If so, the plate protection rubber roller 305 swings and drags the tail of the old printing plate 207, and adjusts the angle of the tail of the old printing plate 207 so that the tail of the old printing plate 207 is aligned with the outer surface of the inner frame 211. The printing plate cylinder 301 rotates slowly (clockwise) synchronously to move the old printing plate 207. The tail of 207 is sent to the top of the inner frame 211, and then as the plate cylinder 301 continues to rotate slowly clockwise, the old plate 207 is sent into the inner frame 211, and when the bite plate clamp 303 on the plate cylinder 301 rotates to the disassembly position, the bite plate clamp 303 releases the head of the old printing plate 207, and the old printing plate 207 is transferred upward under the action of the lower unloading roller 210, and then the plate protection rubber roller 305 is reset, and the disassembly of the old printing plate 207 is completed.

[0055] 4) Transportation of old printing plates The tail of the old printing plate 207 is first transported to the outer surface side of the inner frame 211. Before the bite plate clamp 303 on the plate cylinder 301 is not released, the old printing plate 101 is pushed forward by the plate cylinder 301 and transported along the lower support rod 213 of the inner frame 211. When the bite plate clamp 303 on the plate cylinder 301 is released, the old printing plate 207 is driven by the lower floating conveying roller 208 to continue to be transported and enter the top surface of the top frame 115 of the upper plate feeding part 100. Then, it is continued to be transported under the action of the upper floating conveying roller 119 until the old printing plate 207 is completely transported to the top surface of the top frame 115 and is restricted from sliding down by the stopper 117. Then the inner frame 211 is reset to complete the transportation of the old printing plate 207.

[0056] Example 3 It is easy to understand that the plate cylinder 301 and its associated parts usually need regular maintenance, so a certain space needs to be reserved for their maintenance work, so the upper plate feeding part 100 is equipped with a first driving mechanism for driving its movement, and the lower plate feeding part 200 is equipped with a second driving mechanism for driving its movement. The first driving mechanism is used to drive the upper plate feeding part 100 to approach or move away from the plate cylinder 301 and its associated parts, and the second driving mechanism is used to drive the lower plate feeding part 200 to approach or move away from the plate cylinder 301 and its associated parts.

[0057] In this embodiment, the first driving mechanism includes a swing arm 110 and a swing arm driving member 109. The swing arm 110 is pivotally connected to the frame in a lever shape, and the loading space (i.e., the top frame 115 therein) is fixedly connected to one end of the swing arm 110. The swing arm driving member 109 is configured as a cylinder, a hydraulic cylinder, or an electric cylinder. The two ends of the swing arm driving member 109 are respectively hinged to the frame and the other end of the swing arm 110. When the swing arm driving member 109 telescopically moves, it drives the upper plate feeding part 100 to rotate around the rotation axis connected between the swing arm 110 and the frame, and then moves away from or close to the plate cylinder 301 and its associated parts. Alternatively, the first driving mechanism includes a moving assembly connected to the frame and a driving element fixed to the frame and used to drive the moving assembly to move, and the loading space (i.e., the top frame 113 therein) is fixedly connected to the moving assembly. For example, the moving assembly is a slider that is slidably connected relative to the frame in the horizontal direction, and the driving element can be configured as a cylinder, a hydraulic cylinder, or an electric cylinder.

[0058] In this embodiment, the second driving mechanism includes a slider 205 and a slider driving member 206. The slider 205 is slidably connected to the frame and arranged in the vertical direction. The sliding driving member 206 is configured as a cylinder, a hydraulic cylinder or an electric cylinder, which is installed on the frame, and the output end is connected to the slider 205. In this way, through the telescopic movement of the sliding driving member 206, the lower plate feeding part 200 can be driven to rise and fall, and then move away from or close to the plate cylinder 301 and its associated components.

[0059] When the plate cylinder 301 or its associated parts need to be repaired and maintained, the lower plate feeding part 200 is lowered by the slider driving part 206, and the upper plate feeding part 100 is swung upward by the swing arm driving part 109, so that the upper plate feeding part 100 and the lower plate feeding part 200 are away from the plate cylinder 301 and its associated parts, leaving space for maintenance.

[0060] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A fully automatic and efficient printing plate conveying device, characterized in that: The machine comprises a frame, and an upper plate feeding part and a lower plate feeding part which are mounted on the frame and connected to each other; the upper plate feeding part comprises a loading space for loading new printing plates, the loading space is arranged obliquely so that the new printing plates loaded therein can be discharged by gravity, and the loading space is provided with a discharge mechanism for controlling the discharge of the new printing plates from top to bottom in sequence; The plate feeding part comprises an outer frame, an inner frame rotatably connected to the outer frame, and an inner frame driving member connected between the outer frame and the inner frame; a temporary storage space for temporarily storing a new printing plate is formed between the outer frame and the inner frame, a positioning structure for positioning the new printing plate at a predetermined position in the temporary storage space is further provided on the outer frame, a guide roller for guiding the new printing plate to enter the temporary storage space is provided on the outer frame, and an adsorption mechanism for adsorbing the new printing plate is further provided on the inner side surface of the inner frame; The frame is also provided with a discharge conveying mechanism for conveying the old printing plates along the outer surface of the inner frame and the top surface of the loading space.

2. The fully automatic and efficient printing plate conveying device according to claim 1 is characterized in that: The loading space includes a top frame, a fixed feed roller, a movable feed roller and a roller drive; the fixed feed roller is arranged on one side below the top frame and is fixed relative to the top frame, the movable feed roller is located on one side below the fixed feed roller and is adjustable in position, each new printing plate is arranged in a stacked state between the fixed feed roller and the movable feed roller, and the roller drive is used to drive the movable feed roller to move away from or close to the fixed feed roller; The discharge mechanism includes a limit front gauge and a front gauge driving member; the limit front gauge is movably connected relative to the top frame, and the front gauge driving member is used to drive the limit front gauge to move relative to the top frame, and the limit front gauge blocks or releases the discharge path of the top new printing plate through its movable movement.

3. The fully automatic and efficient printing plate conveying device according to claim 2 is characterized in that: The front limit gauge is used to allow the free end of the new printing plate to be spherical, hemispherical or arc-shaped.

4. The fully automatic and efficient printing plate conveying device according to claim 1 is characterized in that: The loading space is provided with a partition component for separating two adjacent new printing plates; the partition part comprises a brush and / or an air nozzle.

5. The fully automatic and efficient printing plate conveying device according to claim 2 is characterized in that: A slope for guiding the old printing plates to be transported and stacked is provided at the lower end of the outer side of the top frame of the loading space; and / or a stopper for preventing the old printing plates from sliding is provided at the outer side of the top frame of the loading space.

6. The fully automatic and efficient printing plate conveying device according to claim 1 is characterized in that: The unloading conveying mechanism is provided on the outer surface of the inner frame and the top surface of the loading space; the unloading conveying mechanism includes a floating conveying roller and a roller driving component, and the floating conveying roller is used to change the distance between it and the outer surface of the inner frame or the top surface of the loading space under the drive of the roller driving component, so as to facilitate the unloading of the old printing plate.

7. A fully automatic and efficient printing plate changing system, characterized by: It comprises a printing plate fixing and bending device and a fully automatic and efficient printing plate conveying device as described in any one of claims 1 to 6; the printing plate fixing and bending device comprises a printing plate cylinder, a bite plate clamp, a drag plate clamp, a plate protection rubber roller and a plate pressing rubber roller; the bite plate clamp and the drag plate clamp are arranged on the surface of the printing plate cylinder, and the bite plate clamp and the drag plate clamp are both provided with a plate clamp driving member for changing their respective angles relative to the surface of the printing plate cylinder; the plate protection rubber roller and the plate pressing rubber roller are both movably mounted on the frame, and the plate protection rubber roller and the plate pressing rubber roller are both provided with a rubber roller driving member for changing their respective distances relative to the printing plate cylinder; the plate protection rubber roller and the plate pressing rubber roller cooperate with the printing plate cylinder, the bite plate clamp and the drag plate clamp to make the new printing plate close to the printing plate cylinder, and bend the new printing plate at the printing plate bite, and the plate protection rubber roller also guides the old printing plate drag to enter the outer surface of the inner frame of the lower plate feeding part under the action of the rubber roller driving member.

8. The fully automatic and efficient printing plate changing system according to claim 7 is characterized in that: The upper plate-feeding part and the lower plate-feeding part are both movable relative to the plate cylinder. The upper plate-feeding part is provided with a first driving mechanism for driving its movement, and the lower plate-feeding part is provided with a second driving mechanism for driving its movement, so that the upper plate-feeding part and the lower plate-feeding part can move away from or approach the plate cylinder and associated components.

9. The fully automatic and efficient printing plate changing system according to claim 8 is characterized in that: The first driving mechanism is rotatably connected to the swing arm on the frame and a swing arm driving member fixed on the frame and used to drive the swing arm to swing, and the loading space is fixedly connected to the swing arm. Alternatively, the first driving mechanism includes a moving component connected to the frame and a driving element fixed on the frame and used to drive the moving component to move, and the loading space is fixedly connected to the moving component; the second driving mechanism includes a slider slidably connected to the frame and a slider driving member fixed on the frame and used to drive the slider to move up and down, and the outer frame is fixedly connected to the slider.

10. The fully automatic and efficient printing plate changing system according to claim 9, characterized in that: It also includes a detection sensor, which is used to detect the states of the bite plate clamp and the drag plate clamp, and is used to detect the bite and drag positions of the new printing plate and the old printing plate.

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