Full-automatic continuous printing plate conveying device and replacing system

Abstract

The invention discloses a full-automatic continuous printing plate conveying device and a 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 bottom to top. The lower plate conveying part comprises an outer frame, an inner frame and an inner frame driving piece; an adsorption mechanism used for adsorbing a new printing plate is further arranged on the inner side surface of the inner frame. 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. According to the printing plate assembling and disassembling device, multiple new and old printing plates can be conveyed instead of manual work, the new printing plates can be installed, the old printing plates can be disassembled, then manual work is completely replaced for printing plate disassembling and assembling work, 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 full-automatic continuous 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 plate changing process in the prior art relies on manual labor, the purpose of the present invention is to provide a fully automatic continuous plate conveying device and a changing system so as 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 continuous printing plate conveying device, characterized in that: it 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 bottom to top 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, and the outer frame is also provided with a positioning front gauge for positioning the new printing plate at a predetermined position in the temporary storage space, the outer frame is also provided with a guide roller for guiding the new printing plate to enter the temporary storage space, and the inner side surface of the inner frame is also provided with an adsorption mechanism for adsorbing the new printing plate; The frame is also equipped with an old printing plate unloading and conveying mechanism, which is used to convey the old printing plates along the outer surface of the inner frame in the lower plate feeding part to the top surface of the loading space in the upper plate feeding part.

[0007] In some preferred embodiments, the discharge mechanism includes a front gauge, a drag gauge and a front gauge driving member; the front gauge is rotatably connected to the lower end of the loading space, the front gauge driving member is connected between the front gauge and the loading space, and the front gauge blocks or releases the discharge path of the new printing plate by flipping movement; the drag gauge is fixedly connected to the loading space, and a preset gap is provided between its free end and the bottom wall of the loading space, and the preset gap is greater than one times the thickness of the new printing plate and less than two times the thickness of the new printing plate.

[0008] In some preferred embodiments, a plurality of flexible separators are arranged at intervals on the side walls of the loading space, and the flexible separators are used to separate two adjacent new printing plates in the loading space from each other.

[0009] In some preferred embodiments, a stopper is provided on the top surface of the loading space to prevent old printing plates from sliding off.

[0010] In some preferred embodiments, the drag gauge has an inclined surface facing the new printing plate, and a contact layer made of a flexible material is provided on the inclined surface.

[0011] In some preferred embodiments, the old printing plate unloading and conveying mechanism is arranged on the outer surface of the inner frame in the lower plate feeding part and the top surface of the loading space in the upper plate feeding part; the old printing plate unloading and conveying mechanism includes a unloading and conveying roller and a unloading driving member, and the unloading driving member is used to keep the unloading and conveying roller pressed against the old printing plate when working.

[0012] In a second aspect, the present invention further provides a fully automatic continuous printing plate changing system, comprising a printing plate fixing and bending device and the fully automatic continuous printing plate conveying device as described above; 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 The rubber 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 printing plate close to the plate cylinder and bend the new printing plate at the 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 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 continuous printing plate conveying device provided by the present invention, due to the arrangement of the upper plate feeding part and the lower plate feeding part, new and old printing plates can be stored and conveyed without relying on manual plate handling. In the fully automatic continuous 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 continuous 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 structural diagram of a fully automatic continuous 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 diagram of a side plate provided with a separator 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-bottom frame, 103-support plate, 104-discharging roller, 105-side plate, 1051-flexible separator, 106-front gauge driving member, 107-front gauge, 108-drag gauge, 109-swing arm driving member, 110-swing arm, 111-upper unloading driving member, 112-upper unloading pressure roller, 113-top frame, 114-upper unloading wheel shaft, 115-upper unloading roller, 116-upper support rod, 117-discharging wheel shaft, 118-stopper; 200-plate feeding 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 unloading pressure roller, 209-lower unloading driving member, 210-lower unloading roller, 211-inner frame, 212-suction nozzle, 213-lower unloading wheel shaft, 214-sliding roller, 215-turning shaft, 216-lower support rod, 217-fixing rod; 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 continuous 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 bottom frame 102 and a top frame 113 arranged in parallel and opposite to each other, and a side plate 105 connected between the bottom frame 102 and the top frame 113, wherein there are two side plates 105, which are arranged in parallel and opposite to each other on both sides of the width direction of the loading space, so that a space for loading a new printing plate 101 is formed between the bottom frame 102, the top frame 113 and the side plates 105, that is, the space has two openings arranged opposite to each other along its length direction (that is, the discharge direction of the new printing plate 101). The loading space is arranged in an inclined manner, and the two openings of the loading space are respectively located at a high position and a low position, so that the new printing plate 101 loaded in the loading space can be discharged by gravity.

[0029] The loading space is also provided with a discharge mechanism for controlling the discharge of new printing plates 101 from bottom to top.

[0030] In this embodiment, the unloading mechanism includes a front gauge 107 rotatably connected to the lower end of the bottom frame 102 and a front gauge driving component 106 for driving the front gauge 107 to rotate. The front gauge 107 is installed in a lever shape, and the front gauge driving component 106 is configured as a cylinder, a hydraulic cylinder or an electric cylinder, and its two ends are respectively hinged to the front gauge 107 and the bottom frame 102, and the upper end of the front gauge 107 blocks or releases the discharge path of the new printing plate 101 through a flipping motion.

[0031] The loading space usually contains multiple stacked new printing plates 101, and a flexible separator 1051 is provided in the loading space. The inner sides of the two side plates 105 are fixed with the flexible separators 1051, and the flexible separators 1051 are arranged in layers. The flexible separators 1051 are used to separate two adjacent new printing plates 101 in the loading space. In this embodiment, the flexible separators 1051 are only used to prevent the two adjacent new printing plates from being in full contact, and do not play a supporting role, so they do not affect the falling of the upper printing plate.

[0032] The lower end of the loading space is also provided with a limiting structure, which includes a drag gauge 108 fixed on the inner top wall of the top frame 113, and a preset gap is provided between the free end of the drag gauge 113 and the inner wall of the bottom frame 102, and the preset gap is greater than one times the thickness of the new printing plate 101 and less than two times the thickness of the new printing plate 101. In this way, only the new printing plate 101 at the bottom of the loading space can pass alone. Usually, the drag gauge 108 has an inclined surface facing the new printing plate 101, for example, the drag gauge 108 is configured as an inclined structure as a whole. And the drag gauge 108 is usually made of rigid material, and a contact layer made of flexible material is applied on its inclined surface; or the drag gauge 108 includes two parts connected in sequence along its length direction, namely a rigid part and a flexible part, the rigid part is fixed on the top frame 113, and the flexible part is used to block the new printing plate 101.

[0033] The upper plate feeding part 100 also includes a support plate 103 and a discharge roller 104. The support plates 103 are arranged in pairs and fixed to both sides of the width direction of the top frame 102, respectively. A discharge wheel shaft 117 is installed between the two support plates 103 arranged in pairs, and a discharge roller 104 is installed on the discharge wheel shaft 117, or two or more discharge rollers 104 are installed at intervals. And the circumferential surface of the discharge roller 104 protrudes from the inner surface of the bottom frame 102, so that the new printing plate 101 can be discharged relatively easily. Usually, multiple pairs of support plates 103 are arranged at intervals along the discharge direction of the new printing plate 101.

[0034] A plurality of upper support rods 116 arranged along the length direction of the top frame 113 are fixed inside the frame, and the plurality of upper support rods 116 are arranged at intervals along the width direction of the top frame 113. A plurality of stoppers 118, such as plastic sheets, are provided on the top surface of one side of the lower end of the upper support rods 116 to prevent the replaced old printing plates 207 from sliding off, and the stoppers 118 are arranged in an inclined shape.

[0035] 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 turning shaft 215 is fixedly installed on the upper end of the outer frame 203. The inner frame 211 is provided with an axis hole adapted to the turning shaft 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 respectively hinged on the outer frame 203 and the inner frame 211.

[0036] 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 front rule 204 for positioning the new printing plate 101 at a predetermined position in the temporary storage space. 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.

[0037] 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.

[0038] A plurality of lower support rods 216 arranged along the length direction of the inner frame 211 are fixed inside the frame hole of the inner frame 211 , and the plurality of lower support rods 216 are arranged at intervals along the width direction of the inner frame 211 .

[0039] In addition, both the upper plate feeding part 100 and the lower plate feeding part 200 are configured as an old plate unloading and conveying mechanism. The old plate unloading and conveying mechanism equipped in the lower plate feeding part 200 is used to transport the replaced old plate 207 along the outer surface of the inner frame 211 to the upper plate feeding part 100, and the old plate unloading and conveying mechanism equipped in the upper plate feeding part 100 is used to transport the replaced old plate 207 upward along the top surface of the loading space (i.e., the top frame 113), so that the old plate 207 is temporarily placed on the top frame 113, and the old plate 207 is prevented from sliding down by the stopper 118. Usually, the upper plate feeding part 100 and the lower plate feeding part 200 can be equipped with more than one old plate unloading and conveying mechanism.

[0040] For the upper plate feeding part 100, the unloading and conveying mechanism of the old printing plate includes an upper unloading roller 112 and an upper unloading driving member 111. The upper unloading roller 112 is fixed on a bracket equipped therewith, and a motor (not shown in the figure) for driving the upper unloading roller 112 to rotate is also fixed on the bracket, and the bracket is fixed on the output end of the upper unloading driving member 111. The upper unloading driving member 111 can be configured as a cylinder, a hydraulic cylinder or an electric cylinder, and the upper unloading driving member 111 is usually fixed on the frame. The telescopic direction of the upper unloading driving member 111 is roughly perpendicular to the loading space (i.e., the top frame 113), so that the distance between the circumferential surface of the upper unloading roller 112 and the old printing plate 207 can be controlled by the telescopic movement of the upper unloading driving member 111, so that the upper unloading roller 112 can apply a certain pressure to the old printing plate 207, and then drive the old printing plate 207 to move on the top frame 113 under the rotation of the upper unloading roller 112. It is easy to understand that in order to reduce the friction between the old printing plate 207 and the top frame 113, an upper unloading roller 115 is also configured. There are usually multiple upper unloading rollers 115 and they are arranged at intervals on the upper unloading wheel shaft 114. The upper unloading wheel shaft 114 is rotatably connected relative to the top frame 113, and the replaced old printing plate 207 is located between the upper unloading pressure roller 112 and the upper unloading roller 115. The upper unloading pressure roller 112 can be replaced by a pressure wheel, which does not affect the realization of the printing plate conveying function.

[0041] Similarly, for the lower plate feeding part 200, its old printing plate unloading and conveying mechanism includes a lower discharge pressure roller 208 and a lower discharge driving member 209. Thus, the distance between the lower discharge pressure roller 208 and the outer surface of the inner frame 211 is controlled by the telescopic movement of the lower discharge driving member 209. Correspondingly, a lower discharge roller 210 and a lower discharge wheel shaft 213 are also configured. The lower discharge roller 210 is installed on the lower discharge wheel shaft 213, and the lower discharge wheel shaft 213 is rotatably connected to the inner frame 211. The old printing plate 207 is conveyed between the lower discharge roller 210 and the lower discharge pressure roller 208, so that the old printing plate 207 can be driven to move toward the upper plate feeding part 100 under the rotation of the lower discharge pressure roller 208. The lower discharge pressure roller 208 can also be replaced by a pressure wheel, which does not affect the realization of the printing plate conveying function.

[0042] It is easy to understand that a fixing rod 217 is specially provided at the lower end of the top surface of the inner frame 211, and one or more sliding rollers 214 are installed on the fixing rod 217, so that the old printing plate 207 replaced by the printing plate cylinder 301 can be transported to the outer surface side of the inner frame 211 under the guidance of the sliding roller 214.

[0043] Example 2 A fully automatic continuous plate changing system, such as Figure 1As shown, the printing plate fixing and bending device 300 and the fully automatic continuous 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.

[0044] 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.

[0045] 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 the two belong are slidably or swingably connected to the frame equipped with the fully automatic continuous plate conveying device. When the brackets to which the two belong slide or swing on the frame, their respective distances relative to the plate cylinder 301 can be changed.

[0046] 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 continuous 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 continuous plate conveying device and on the bracket to which the plate-protecting rubber roller 305 belongs. The same is true for the plate-pressing rubber roller 304.

[0047] 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 printing plate fixing device 300 (the downstream side refers to the side away from the docking position along the movement direction of the new printing plate 101). Through the arrangement of the plate guard rubber roller 305, when the new printing 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 printing plate 101, so that the new printing plate 101 can be wound better, and at the same time, the bite of the new printing plate 101 is closely attached to the printing 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 printing plate 101 so that it fits closely with the surface of the printing plate cylinder 301.

[0048] It also generally includes a detection sensor for detecting the state of the bite plate clamp 303 and the drag plate clamp 302 (whether the plate is engaged). 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 of the lower plate feeding part 200 and the plate fixing device 300, and upstream of the plate guard rubber roller 305, so as to detect whether the head of the new plate 101 is bitten when it is installed, and whether the tail and head of the old plate 207 are released when the old 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 plate 101 is bitten when it is installed. The above detection sensors are also used to detect the bite and drag position of the new plate 101 and the old plate 207.

[0049] The working process of the fully automatic continuous printing plate changing 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 places the multiple new printing plates 101 to be used into the upper plate feeding part 100 in sequence (the new printing plate 101 to be used first is placed at the bottom), and the new printing plates 101 are separated by multiple separators 1051 on the side plate 105.

[0050] 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 front gauge 107 swings downward under the action of the front gauge driver 106 to give way to the new printing plate 101 to slide down, and under the restriction of the drag gauge 108, only the new printing plate 101 at the bottom is allowed 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 positioning the front gauge 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.

[0051] 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.

[0052] 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.

[0053] 4) Transportation of old printing plates The tail of the old printing plate 207 is first transported to the inner frame 211. Before the bite plate clamp 303 on the plate cylinder 301 is released, the old printing plate 101 is pushed forward by the plate cylinder 301 and transported along the lower support rod 216 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 forward by the lower unloading pressure wheel 208 and enters the top frame 113 of the upper plate feeding part 100. Under the action of the upper unloading pressure wheel 112, the old printing plate 207 is continuously transported until it is completely transported to the top surface of the top frame 113 and is restricted from sliding down by the stopper 118. Then the inner frame 211 is reset to complete the transportation of the old printing plate 207.

[0054] 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.

[0055] 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 113 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. 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. The driving element can be configured as a cylinder, a hydraulic cylinder, or an electric cylinder. 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.

[0056] 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 far away from the plate cylinder 301 and its associated parts, leaving space for maintenance.

[0057] 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 continuous 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 bottom to top 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, and the outer frame is also provided with a positioning front gauge for positioning the new printing plate at a predetermined position in the temporary storage space, the outer frame is also provided with a guide roller for guiding the new printing plate to enter the temporary storage space, and the inner side surface of the inner frame is also provided with an adsorption mechanism for adsorbing the new printing plate; The frame is also equipped with an old printing plate unloading and conveying mechanism, which is used to convey the old printing plate along the outer surface of the inner frame in the lower plate feeding part to the top surface of the loading space in the upper plate feeding part and the transmission roller.

2. The fully automatic continuous printing plate conveying device according to claim 1 is characterized in that: The discharge mechanism includes a front gauge, a drag gauge and a front gauge driving member; the front gauge is rotatably connected to the lower end of the loading space, the front gauge driving member is connected between the front gauge and the loading space, and the front gauge blocks or releases the discharge path of the new printing plate by flipping movement; the drag gauge is fixedly connected to the loading space, and a preset gap is provided between its free end and the bottom wall of the loading space, and the preset gap is greater than one times the thickness of the new printing plate and less than two times the thickness of the new printing plate.

3. The fully automatic continuous printing plate conveying device according to claim 1 is characterized in that: A plurality of flexible partitions are arranged at intervals on the side walls of the loading space, and the flexible partitions are used to separate two adjacent new printing plates in the loading space from each other.

4. The fully automatic continuous printing plate conveying device according to claim 2 is characterized in that: The top surface of the loading space is also provided with a stopper for preventing the old printing plate from sliding off.

5. The fully automatic continuous printing plate conveying device according to claim 2 is characterized in that: The drag gauge has an inclined surface facing the new printing plate, and a contact layer made of a flexible material is arranged on the inclined surface.

6. The fully automatic continuous printing plate conveying device according to claim 1 is characterized in that: The old printing plate unloading and conveying mechanism is arranged on the outer surface of the inner frame in the lower plate feeding part and the top surface of the loading space in the upper plate feeding part; the old printing plate unloading and conveying mechanism includes a unloading and conveying roller and a unloading driving member, and the unloading driving member is used to keep the unloading and conveying roller pressed against the old printing plate when working.

7. A fully automatic continuous printing plate changing system, characterized in that: It comprises a printing plate fixing and bending device and a fully automatic continuous 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 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 are both movably mounted on the frame , and the plate guard rubber roller and the plate pressing rubber roller are both equipped with a rubber roller driving component for changing their respective distances relative to the plate cylinder. The plate guard 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. The fully automatic continuous plate replacement system, and the plate guard 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 component.

8. The fully automatic continuous printing plate changing system according to claim 7, 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 continuous printing plate changing system according to claim 8, characterized in that: 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. Alternatively, 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.

10. The fully automatic continuous 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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