Paper conveying device of digital printing machine

Abstract

The invention is suitable for the technical field of printing machine equipment, and provides a paper conveying device of a digital printing machine. Comprising an adsorption conveying part, a lifting part, a horizontal conveying part and a storage moving trolley. The adsorption conveying component is fixedly installed on the lifting component, the lifting component is used for driving the storage and loading moving trolley to be lifted, the storage and loading moving trolley is used for storing and loading paper to be conveyed, and the adsorption conveying component is used for adsorbing and conveying the paper on the storage and loading moving trolley to the horizontal conveying component. The horizontal conveying part is used for horizontally conveying paper to digital printing. The ascending shaking mechanism is arranged on the air cylinder assembly close to the air nozzle, so that paper can be driven to shake in the adsorption ascending process, meanwhile, under the cooperation of the air nozzle, paper adhesion is avoided, it is guaranteed that only one piece of paper is conveyed each time, and conveying is more accurate.

Description

Technical Field

[0001] The invention relates to the technical field of printing machine equipment, in particular to a paper conveying device of a digital printing machine. Background Art

[0002] Digital printing presses, also known as universal flatbed printers or flatbed printers, have broken through the bottleneck of digital printing technology and achieved true one-sheet printing, no need for plate making, and full-color image completion in one go. They are the successor to traditional printing presses.

[0003] A digital printing machine includes a paper conveying device. Since the conveyed papers are stacked together, two adjacent papers stick together during the adsorption transfer process. The prior art separates the two by blowing, but the separation effect of this method does not achieve the expected effect. In order to solve this technical problem, a paper conveying device for a digital printing machine is proposed. Summary of the invention

[0004] The object of the present invention is to provide a paper conveying device for a digital printing press to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A paper conveying device for a digital printing press comprises: an adsorption conveying component, a lifting component, a horizontal conveying component and a storage and loading moving trolley; the adsorption conveying component is fixedly mounted on the lifting component, the lifting component is used to drive the storage and loading moving trolley to lift, the storage and loading moving trolley is used to store paper to be conveyed, the adsorption conveying component is used to adsorb and convey the paper on the storage and loading moving trolley to the horizontal conveying component, and the horizontal conveying component is used to horizontally convey the paper to the digital printing press;

[0007] The adsorption and conveying component includes a mounting frame which is horizontally movably mounted on the lifting component, on which a plurality of cylinder assemblies are arranged in parallel on the mounting frame; a negative pressure suction cup is arranged on the cylinder extension rod of the cylinder assembly; the negative pressure suction cup is used to adsorb paper; an air nozzle is also arranged on the mounting frame, and the air nozzle is arranged at one end of the mounting frame away from the horizontal conveying component; the cylinder assembly close to the air nozzle has a rising shaking mechanism.

[0008] As a further solution of the present invention: the rising shaking mechanism includes a first annular sleeve elastically installed on the cylinder extension rod up and down and a blocking annular member installed on the mounting plate, a second annular sleeve is provided on the outer side of the first annular sleeve, a first rotating rod is provided on the second annular sleeve, one end of the first rotating rod is elastically rotatably installed on the second annular sleeve in one direction, the second rotating rod is elastically rotatably installed on one end of the first rotating rod away from the second annular sleeve, the mounting plate is fixedly installed on the mounting frame, the blocking annular member is arranged on the trajectory of the second rotating rod, and a negative pressure suction cup is installed at the bottom of the first annular sleeve.

[0009] As a further solution of the present invention: a first rotating shaft is arranged on one end of the first rotating rod close to the second annular sleeve, the first rotating shaft is rotatably mounted in the first mounting hole on the second annular sleeve, a first torsion spring is arranged on the outer sleeve of the first rotating shaft, two ends of the first torsion spring are respectively fixedly mounted on the first rotating rod and the side wall of the first mounting hole, a limit pin is also fixedly mounted on the second annular sleeve, the limit pin is located below the middle position of the first rotating rod, and the limit pin is used to limit the downward deflection of the first rotating rod.

[0010] As a further solution of the present invention: the cylinder extension rod is elastically slidably installed with a connecting rod up and down, the first annular sleeve is elastically rotatably sleeved on the outside of the connecting rod, and the negative pressure suction cup is installed on the connecting rod; a rotating mechanism that drives the first annular sleeve to rotate is arranged between the connecting rod and the first annular sleeve, and the first end of the blocking annular member close to the second annular sleeve and the second end of the blocking annular member close to the second annular sleeve gradually approach the second annular sleeve; the second annular sleeve is elastically rotatably sleeved on the outside of the first annular sleeve.

[0011] As a further solution of the present invention: the rotating mechanism includes a matching sleeve and two driving pins symmetrically arranged on the outside of the first annular sleeve, the matching sleeve is fixedly installed on the cylinder extension rod, the matching sleeve is arranged on the outside of the first annular sleeve, and guide rails are symmetrically arranged inside the matching sleeve, and the side walls of the driving pins slide and abut against the guide rails.

[0012] As a further solution of the present invention: a second torsion spring is arranged between the first annular sleeve and the connecting rod, the second torsion spring sleeve is arranged outside the connecting rod, and two ends of the second torsion spring are respectively fixedly mounted on the first annular sleeve and the connecting rod.

[0013] As a further solution of the present invention: a third torsion spring is arranged between the second annular sleeve and the first annular sleeve, the third torsion spring sleeve is arranged outside the first annular sleeve, and two ends of the third torsion spring are respectively fixedly mounted on the first annular sleeve and the second annular sleeve.

[0014] As a further solution of the present invention: the lifting component includes a mounting box, and a horizontal power mechanism for driving the mounting frame to move horizontally is arranged on the mounting box.

[0015] As a further solution of the present invention: a lifting frame which moves up and down is arranged inside the installation box, and two lifting rods are installed in parallel on the lifting frame, and the lifting rods are used to lift the storage and loading mobile trolley.

[0016] As a further solution of the present invention: it also includes a power mechanism, which includes a rack and a gear. The rack is set on the lifting frame, and the gear is rotatably installed on the installation box, and the gear is meshed with the rack. The installation box is also provided with a rotating motor for driving the gear to rotate.

[0017] Compared with the prior art, the beneficial effect of the present invention is that by arranging a rising and shaking mechanism on the cylinder assembly near the air nozzle, the paper can be driven to shake during the adsorption and rising process. At the same time, with the cooperation of the air nozzle, the paper is prevented from sticking, ensuring that only one sheet of paper is transported each time, and the transportation is more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The present invention is a schematic structural diagram of a paper conveying device of a digital printing machine according to an embodiment of the present invention.

[0019] Figure 2 The present invention is a schematic structural diagram of an adsorption and conveying component in a paper conveying device of a digital printing machine according to an embodiment of the present invention.

[0020] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0021] Figure 4 for Figure 2 Enlarged view of point B in the middle.

[0022] Figure 5 The present invention is a schematic structural diagram of a matching sleeve in a paper conveying device of a digital printing machine according to an embodiment of the present invention.

[0023] Figure 6 The present invention is a schematic diagram of the positional relationship between a second annular sleeve and a blocking annular member in a paper conveying device of a digital printing press according to an embodiment of the present invention.

[0024] Figure 7 The present invention is a schematic structural diagram of a lifting component in a paper conveying device of a digital printing machine according to an embodiment of the present invention.

[0025] Figure 8 The present invention is a schematic structural diagram of a horizontal conveying component in a paper conveying device of a digital printing machine according to an embodiment of the present invention.

[0026] In the figure:

[0027] 10-adsorption conveying component, 20-lifting component, 30-horizontal conveying component, 40-storage mobile trolley;

[0028] 101-cylinder assembly, 102-mounting block, 103-negative pressure suction cup, 104-mounting frame, 105-guide rail, 106-cylinder, 107-cylinder extension rod, 108-connecting rod, 109-first elastic member, 110-first annular sleeve, 111-second annular sleeve, 112-blocking annular member, 113-first rotating rod, 114-first rotating shaft, 115-limiting pin, 116-second rotating rod, 117-second rotating shaft, 118-mounting plate, 119-matching sleeve, 120-driving pin, 121-jet nozzle;

[0029] 201-installation box, 202-lifting rod, 203-lifting frame, 204-rack, 205-gear, 206-first rotating sleeve, 207-elastic telescopic rod, 208-limiting member, 209-one-way limiting groove, 210-first adsorption member, 211-second adsorption member, 212-third adsorption member;

[0030] 301- bracket, 302- rotating shaft, 303- pressing wheel, 304- conveying motor, 305- belt, 306- installing rotating shaft. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Example 1

[0033] See also Figures 1 to 8 , a structural diagram of a paper conveying device of a digital printing machine provided in Example 1 of the present invention, the paper conveying device of the digital printing machine comprises: an adsorption conveying component 10, a lifting component 20, a horizontal conveying component 30 and a storage and loading moving trolley 40; the adsorption conveying component 10 is fixedly mounted on the lifting component 20, the lifting component 20 is used to drive the storage and loading moving trolley 40 to lift, the storage and loading moving trolley 40 is used to store the paper to be conveyed, the adsorption conveying component 10 is used to adsorb and convey the paper on the storage and loading moving trolley 40 to the horizontal conveying component 30, and the horizontal conveying component 30 is used to horizontally convey the paper to the digital printing machine.

[0034] The adsorption and conveying component 10 includes a mounting frame 104 which is horizontally movable and mounted on the lifting component 20. The mounting frame 104 is provided with a plurality of cylinder assemblies 101 which are arranged in parallel on the mounting frame 104. A negative pressure suction cup 103 is provided on the cylinder extension rod 107 of the cylinder assembly 101. The negative pressure suction cup 103 is used to adsorb paper. Since the paper on the other side of the storage and moving trolley 40 may be adhered to each other during the process of being adsorbed and lifted by the negative pressure suction cup 103, in order to separate the adhered paper, an air nozzle 121 is also provided on the mounting frame 104. The air nozzle 121 is arranged at the end of the mounting frame 104 away from the horizontal conveying component 30. In order to ensure the separation of the paper, the cylinder assembly 101 near the air nozzle 121 has a rising and shaking mechanism, so that the mounting frame 104 near the end of the air nozzle 121 can rise and shake when adsorbing and lifting the paper, further ensuring that the adhered paper can be separated. The air nozzle 121 is externally connected to the air supply system.

[0035] During operation, the storage and loading mobile trolley 40 carrying the paper is pushed to the lifting position of the lifting component 20, and the lifting component 20 lifts the storage and loading mobile trolley 40 to an appropriate position. When the negative pressure suction cup 103 on the cylinder assembly 101 near the air nozzle 121 drops to an appropriate position, the negative pressure suction cup 103 on the cylinder assembly 101 near the air nozzle 121 first absorbs and lifts the paper, and shakes under the action of the rising shaking mechanism during the lifting process, and the air nozzle 121 sprays air to prevent the paper from sticking. After the cylinder assembly 101 near the air nozzle 121 is lifted for a period of time, the negative pressure suction cups 103 on the cylinder assemblies 101 at other positions are also absorbed and lifted. When all the negative pressure suction cups 103 are lifted to a set height, the mounting frame 104 approaches the horizontal conveying component 30 so that the paper is above the horizontal conveying component 30, and then the negative pressure suction cup 103 stops adsorbing, so that the paper falls on the horizontal conveying component 30, and the horizontal conveying component 30 conveys the paper to the digital printing machine.

[0036] The present invention arranges a rising and shaking mechanism on the cylinder assembly 101 near the air nozzle 121, so that the paper can be shaken during the adsorption and rising process. At the same time, with the cooperation of the air nozzle 121, the paper is prevented from sticking, ensuring that only one sheet of paper is transported each time, and the transportation is more accurate.

[0037] In some embodiments, the cylinder assembly 101 includes no less than two cylinders 106 , and a cylinder extension rod 107 is disposed on the cylinder 106 .

[0038] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, in some embodiments, the rising shaking mechanism includes a first annular sleeve 110 elastically mounted on the cylinder extension rod 107 up and down and a blocking ring 112 mounted on the mounting plate 118, a second annular sleeve 111 is sleeved on the outer side of the first annular sleeve 110, a first rotating rod 113 is arranged on the second annular sleeve 111, one end of the first rotating rod 113 is elastically rotatably mounted on the second annular sleeve 111 in one direction, a second rotating rod 116 is elastically rotatably mounted on one end of the first rotating rod 113 away from the second annular sleeve 111, the mounting plate 118 is fixedly mounted on the mounting frame 104, the blocking ring 112 is arranged on the trajectory of the second rotating rod 116, and a negative pressure suction cup 103 is installed at the bottom of the first annular sleeve 110. Specifically, after the negative pressure suction cup 103 near the air nozzle 121 absorbs the paper, the first annular sleeve 110 moves upward under the action of the cylinder extension rod 107 on the cylinder 106. During the upward movement of the first annular sleeve 110, the second rotating rod 116 contacts the lower edge of the blocking ring 112, and at this time, the cylinder extension rod 107 will continue to rise. During the lifting process of the cylinder extension rod 107, the first annular sleeve 110 moves downward relative to the cylinder extension rod 107 under the action of the blocking ring 112. At this time, the resistance received by the second rotating rod 116 will become larger and larger. When the resistance is greater than the elastic force between the second rotating rod 116 and the first rotating rod 113, the second rotating rod 116 will deflect, causing the second rotating rod 116 to slide through the blocking ring 112, thereby releasing the restriction of the first annular sleeve 110. Under the action of elasticity, the first annular sleeve 110 moves upward quickly, thereby causing the paper absorbed by the negative pressure suction cup 103 to shake, thereby preventing the absorbed paper from sticking.

[0039] like Figure 3 and Figure 6 As shown, in some embodiments, a first rotating shaft 114 is provided on one end of the first rotating rod 113 close to the second annular sleeve 111, and the first rotating shaft 114 is rotatably mounted in the first mounting hole on the second annular sleeve 111. A first torsion spring is sleeved on the outer side of the first rotating shaft 114, and the two ends of the first torsion spring are respectively fixedly mounted on the first rotating rod 113 and the side wall of the first mounting hole, and a limiting pin 115 is also fixedly mounted on the second annular sleeve 111, and the limiting pin 115 is located below the middle position of the first rotating rod 113, and the limiting pin 115 is used to limit the first rotating rod 113 from deflecting downward. In this way, when the first annular sleeve 110 descends, when the lower edge of the second rotating rod 116 contacts the blocking ring 112, the first rotating rod 113 can deflect upward, so that the second rotating rod 116 can smoothly slide over the blocking ring 112.

[0040] In some embodiments, a second rotating shaft 117 is provided on one end of the second rotating rod 116 close to the first rotating rod 113. The second rotating shaft 117 is elastically rotatably mounted on the end of the first rotating rod 113 away from the second annular sleeve 111. A third torsion spring is sleeved on the outer side of the second rotating shaft 117. The two ends of the third torsion spring are respectively fixedly mounted on the second rotating rod 116 and the first rotating rod 113, thereby achieving the elastic rotatable mounting of the second rotating rod 116 on the first rotating rod 113.

[0041] like Figure 4-Figure 6 As shown, in some embodiments, since different thicknesses of paper require different shaking intensities to ensure a good separation effect, the cylinder extension rod 107 is elastically slidably mounted with a connecting rod 108, the first annular sleeve 110 is elastically rotatably sleeved on the outside of the connecting rod 108, and the negative pressure suction cup 103 is mounted on the connecting rod 108; a rotating mechanism for driving the first annular sleeve 110 to rotate is arranged between the cylinder extension rod 107 and the first annular sleeve 110, and the blocking ring 112 gradually approaches the adjacent side second annular sleeve 111 of the second annular sleeve 111; the second annular sleeve 111 is elastically rotatably sleeved on the outside of the first annular sleeve 110. The direction in which the adjacent side second annular sleeve 111 gradually approaches is the same as the direction in which the first annular sleeve 110 deflects when the cylinder extension rod 107 descends, that is, when the paper becomes thicker and the descending distance of the first annular sleeve 110 increases, the overlapping area of ​​the second rotating rod 116 and the blocking ring 112 increases. When the paper adsorbed by the negative pressure suction cup 103 becomes thicker, the distance that the first annular sleeve 110 and the connecting rod 108 descend relative to the cylinder extension rod 107 increases. At this time, the first annular sleeve 110 is deflected relative to the cylinder extension rod 107 under the action of the rotating mechanism, thereby driving the second annular sleeve 111 to rotate, so that the second rotating rod 116 on the second annular sleeve 111 is deflected relative to the blocking ring 112, and the deflection direction is the direction in which the overlap area between the second rotating rod 116 and the blocking ring 112 increases; in this way, when the first annular sleeve 110 rises with the cylinder extension rod 107, the contact time between the second rotating rod 116 and the blocking ring 112 will increase due to the increase in the overlap area, resulting in an increase in the sliding distance between the first annular sleeve 110 and the connecting rod 108 relative to the cylinder extension rod 107. In this way, when the second rotating rod 116 is out of contact with the blocking ring 112, a larger jitter amplitude will be generated to achieve the problem of automatically adjusting the jitter amplitude according to papers of different thicknesses.

[0042] like Figure 4-Figure 6As shown, in some embodiments, the rotating mechanism includes a matching sleeve 119 and two driving pins 120 symmetrically arranged on the outside of the first annular sleeve 110, the matching sleeve 119 is fixedly mounted on the cylinder extension rod 107, the matching sleeve 119 is sleeved on the outside of the first annular sleeve 110, and the matching sleeve 119 is symmetrically provided with a guide rail 105 inside, and the side wall of the driving pin 120 slides against the guide rail 105. The guide rail 105 can be spiral. In this way, when the first annular sleeve 110 moves up and down relative to the cylinder extension rod 107, the driving pin 120 drives the guide rail 105 to rotate the first annular sleeve 110. Since 11 is elastically rotatably installed on the first annular sleeve 110, when the second rotating rod 116 hits the lower edge of the blocking ring 112, no horizontal sliding will occur between the second rotating rod 116 and the blocking ring 112 due to the friction force. Therefore, at this time, the second annular sleeve 111 rotates with the first annular sleeve 110, so that when the first annular sleeve 110 rises with the cylinder extending rod 107, the second rotating rod 116 can be guaranteed to be in the initial contact position according to the adsorption of paper, thereby ensuring the shaking intensity.

[0043] In some embodiments, a friction structure may be provided at the lower edge of the blocking ring 112, and a friction structure may also be provided at the upper edge of the second rotating rod 116, so as to ensure that no horizontal sliding occurs between the second rotating rod 116 and the blocking ring 112. Specifically, a rubber sleeve may be provided on the outer side of the second rotating rod 116, and a dot-shaped protrusion is provided on the outer side of the rubber sleeve.

[0044] In some embodiments, a second torsion spring is arranged between the first annular sleeve 110 and the connecting rod 108, the second torsion spring sleeve is arranged on the outside of the connecting rod 108, and the two ends of the second torsion spring are respectively fixedly mounted on the first annular sleeve 110 and the connecting rod 108, so that the first annular sleeve 110 can be restored to its initial state.

[0045] In some embodiments, a third torsion spring is arranged between the second annular sleeve 111 and the first annular sleeve 110, and the third torsion spring is sleeved on the outside of the first annular sleeve 110, and the two ends of the third torsion spring are respectively fixedly installed on the first annular sleeve 110 and the second annular sleeve 111, so that the second annular sleeve 111 is elastically rotatably sleeved on the first annular sleeve 110.

[0046] like Figure 1 and Figure 7As shown, in some embodiments, the lifting component 20 includes an installation box 201, and a horizontal power mechanism for driving the installation frame 104 to move horizontally is arranged on the installation box 201. The horizontal power mechanism includes horizontal sliders fixedly installed at both ends of the installation frame 104, and the horizontal sliders are horizontally slidably arranged on horizontal slide rails on the installation box 201. The installation box 201 is also provided with a screw mechanism for driving the horizontal slider to move. The screw mechanism is a prior art and is not described in detail here.

[0047] In some embodiments, a lifting frame 203 that moves up and down is disposed inside the installation box 201 , and two lifting rods 202 are installed in parallel on the lifting frame 203 . The lifting rods 202 are used to lift the storage and loading mobile cart 40 .

[0048] In some embodiments, in order to drive the lifting frame 203 to lift up and down, a power mechanism is also included, and the power mechanism includes a rack 204 and a gear 205. The rack 204 is arranged on the lifting frame 203, and the gear 205 is rotatably mounted on the installation box 201, and the gear 205 is meshed with the rack 204. A rotating motor for driving the gear 205 to rotate is also arranged on the installation box 201. The rotating motor is in transmission connection with the gear 205.

[0049] like Figure 1 and Figure 7 As shown, in some embodiments, in order to lock the height of the lifting rod 202, the power mechanism also includes a position locking mechanism, which includes a first rotating sleeve 206 rotatably sleeved on the lifting frame 203 and a stopper 208 fixedly installed inside the installation box 201. The first rotating sleeve 206 is provided with an elastic telescopic rod 207, and the stopper 208 is arranged with a plurality of one-way stopper grooves 209 in a vertical array near one side of the elastic telescopic rod 207. The stopper 208 is a plate-like structure; a rotating structure for driving the first rotating sleeve 206 to rotate is also provided between the installation box 201 and the first rotating sleeve 206. The one-way stopper groove 209 can be a triangular structure. The elastic telescopic rod 207 can slide through the plurality of one-way stopper grooves 209 in one direction during the rising process, and prevent the elastic telescopic rod 207 from falling.

[0050] In some embodiments, the rotating structure includes a first adsorption member 210, a second adsorption member 211 and a third adsorption member 212. The second adsorption member 211 is fixedly mounted on the first rotating sleeve 206. The first adsorption member 210 and the third adsorption member 212 are both fixedly mounted on the installation box 201. The first adsorption member 210 is located at the uppermost end of the trajectory of the first rotating sleeve 206, and the third adsorption member 212 is located at the lowermost end of the trajectory of the first rotating sleeve 206. After the paper conveying is completed, the lifting frame 203 is driven to rise to the highest end. When the second adsorption member 211 is close to the first adsorption member 210, the first rotating sleeve 206 is deflected under the action of the second adsorption member 211, so that the elastic telescopic rod 207 will not pass through the one-way limiting groove 209 during the descending process, so that the descending position of the lifting frame 203 will not be locked. When the first rotating sleeve 206 falls to the lowest position, the first rotating sleeve 206 is deflected under the action of the third adsorption member 212 and the second adsorption member 211, so that the first rotating sleeve 206 returns to the initial position, so that the lifting frame 203 can pass through the one-way limiting groove 209 during the ascending process, so that the one-way limiting groove 209 locks the ascending position of the first rotating sleeve 206, ensuring smooth paper adsorption.

[0051] like Figure 1 and Figure 8 As shown, in some embodiments, the horizontal conveying component 30 includes two rotating shafts 302 arranged in parallel, the two rotating shafts 302 are rotatably mounted on the bracket 301, and a plurality of rotating shafts 302 are arranged in parallel between the two rotating shafts 302, one of the rotating shafts 302 is transmission-connected to a conveying motor 304 mounted on the bracket 301.

[0052] In some embodiments, a pinch wheel 303 is further provided on the bracket 301. The pinch wheel 303 is located above the belt 305 and is arranged near one end of the adsorption conveying component 10. The pinch wheel 303 is installed on the mounting shaft 306 through the mounting frame. The mounting shaft 306 is rotatably mounted on the bracket 301. The bracket 301 is also provided with a deflection motor for driving the mounting shaft 306 to rotate. In the initial state, the distance between the pinch wheel 303 and the belt 305 is relatively large. When the adsorption conveying component 10 conveys the paper to the bottom of the pinch wheel 303, the mounting shaft 306 rotates to make the pinch wheel 303 approach the paper, pressing the paper onto the belt 305 so that the belt 305 can convey the paper.

[0053] The working principle of the present invention is:

[0054] The storage and moving trolley 40 loaded with paper is pushed to the lifting position of the lifting component 20, and the gear 205 drives the lifting frame 203 through the rack 204 to drive the storage and moving trolley 40 on the lifting rod 202 to move up. During the rising process, the elastic telescopic rod 207 passes through the one-way limit groove 209, and the one-way limit groove 209 locks its position, and the storage and moving trolley 40 is lifted to a proper position. When the negative pressure suction cup 103 on the cylinder assembly 101 near the air nozzle 121 is lowered to a proper position, the negative pressure suction cup 103 on the cylinder assembly 101 near the air nozzle 121 first presses the paper After the negative pressure suction cup 103 near the air nozzle 121 adsorbs the paper, the first annular sleeve 110 moves upward under the action of the cylinder extension rod 107 on the cylinder 106. During the upward movement of the first annular sleeve 110, the second rotating rod 116 abuts against the lower edge of the blocking ring 112, and the cylinder extension rod 107 continues to rise. During the lifting process of the cylinder extension rod 107, the first annular sleeve 110 moves downward relative to the cylinder extension rod 107 under the action of the blocking ring 112. At this time, the second rotating rod 116 The resistance received by the second rotating rod 116 will become larger and larger. When the resistance is greater than the elastic force between the second rotating rod 116 and the first rotating rod 113, the second rotating rod 116 will deflect, so that the second rotating rod 116 slides through the blocking ring 112, thereby releasing the restriction of the first annular sleeve 110. Under the elastic action, the first annular sleeve 110 quickly moves upward, so that the paper adsorbed by the negative pressure suction cup 103 will also shake to prevent the adsorbed paper from sticking, and the air nozzle 121 sprays air to prevent the paper from sticking. When one end of the cylinder assembly 101 near the air nozzle 121 is lifted Afterwards, the negative pressure suction cups 103 on the cylinder assemblies 101 at other positions are also sucked and lifted. When all the negative pressure suction cups 103 are lifted to the set height, the mounting frame 104 approaches the horizontal conveying component 30 so that the paper is above the horizontal conveying component 30. Then the negative pressure suction cups 103 stop sucking, so that the paper falls on the horizontal conveying component 30. The mounting shaft 306 rotates to make the pinch wheel 303 approach the paper and press the paper onto the belt 305 so that the belt 305 can convey the paper. The horizontal conveying component 30 conveys the paper to the digital printing machine.

[0055] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0056] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0057] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0058] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0059] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0060] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A paper conveying device for a digital printing press, characterized in that: include: A suction conveying component (10), a lifting component (20), a horizontal conveying component (30) and a storage and loading moving trolley (40); the suction conveying component (10) is fixedly mounted on the lifting component (20); the lifting component (20) is used to drive the storage and loading moving trolley (40) to lift; the storage and loading moving trolley (40) is used to store paper to be transported; the suction conveying component (10) is used to suction and transport the paper on the storage and loading moving trolley (40) to the horizontal conveying component (30); the horizontal conveying component (30) is used to horizontally transport the paper to the digital printing machine; The adsorption and conveying component (10) comprises a mounting frame (104) which is horizontally movably mounted on a lifting component (20); a plurality of groups of cylinder assemblies (101) are arranged on the mounting frame (104); the plurality of groups of cylinder assemblies (101) are arranged in parallel on the mounting frame (104); a negative pressure suction cup (103) is arranged on a cylinder extension rod (107) of the cylinder assembly (101); the negative pressure suction cup (103) is used for adsorbing paper; an air nozzle (121) is also arranged on the mounting frame (104); the air nozzle (121) is arranged at one end of the mounting frame (104) away from the horizontal conveying component (30); and the cylinder assembly (101) close to the air nozzle (121) has a rising shaking mechanism.

2. A paper conveying device for a digital printing press according to claim 1, characterized in that: The ascending shaking mechanism comprises a first annular sleeve (110) elastically mounted on the cylinder extension rod (107) in an upper and lower manner and a blocking annular member (112) mounted on a mounting plate (118); a second annular sleeve (111) is sleeved on the outer side of the first annular sleeve (110); a first rotating rod (113) is arranged on the second annular sleeve (111); one end of the first rotating rod (113) is unidirectionally elastically rotatably mounted on the second annular sleeve (111); a second rotating rod (116) is elastically rotatably mounted on one end of the first rotating rod (113) away from the second annular sleeve (111); the mounting plate (118) is fixedly mounted on the mounting frame (104); the blocking annular member (112) is arranged on the track of the second rotating rod (116); and the negative pressure suction cup (103) is mounted on the bottom of the first annular sleeve (110).

3. A paper conveying device for a digital printing press according to claim 2, characterized in that: A first rotating shaft (114) is arranged on one end of the first rotating rod (113) close to the second annular sleeve (111); the first rotating shaft (114) is rotatably mounted in a first mounting hole on the second annular sleeve (111); a first torsion spring is sleeved on the outer side of the first rotating shaft (114); two ends of the first torsion spring are respectively fixedly mounted on the first rotating rod (113) and the side wall of the first mounting hole; a limiting pin (115) is also fixedly mounted on the second annular sleeve (111); the limiting pin (115) is located below the middle position of the first rotating rod (113); and the limiting pin (115) is used to limit the first rotating rod (113) from deflecting downward.

4. A paper conveying device for a digital printing press according to claim 3, characterized in that: The cylinder extension rod (107) is elastically slidably mounted with a connecting rod (108) up and down; the first annular sleeve (110) is elastically rotatably sleeved on the outside of the connecting rod (108); the negative pressure suction cup (103) is mounted on the connecting rod (108); a rotating mechanism for driving the first annular sleeve (110) to rotate is arranged between the cylinder extension rod (107) and the first annular sleeve (110); the blocking annular member (112) gradually approaches the second annular sleeve (111) at the adjacent side of the second annular sleeve (111); the second annular sleeve (111) is elastically rotatably sleeved on the outside of the first annular sleeve (110).

5. A paper conveying device for a digital printing press according to claim 4, characterized in that: The rotating mechanism comprises a matching sleeve (119) and two driving pins (120) symmetrically arranged on the outside of a first annular sleeve (110); the matching sleeve (119) is fixedly mounted on a cylinder extension rod (107); the matching sleeve (119) is sleeved on the outside of the first annular sleeve (110); and guide rails (105) are symmetrically arranged inside the matching sleeve (119); and the side walls of the driving pins (120) slide against the guide rails (105).

6. The paper conveying device of a digital printing press according to claim 4, characterized in that: A second torsion spring is arranged between the first annular sleeve (110) and the connecting rod (108), the second torsion spring sleeve is arranged outside the connecting rod (108), and two ends of the second torsion spring are respectively fixedly mounted on the first annular sleeve (110) and the connecting rod (108).

7. The paper conveying device of a digital printing press according to claim 4, characterized in that: A third torsion spring is arranged between the second annular sleeve (111) and the first annular sleeve (110), the third torsion spring is sleeved outside the first annular sleeve (110), and two ends of the third torsion spring are respectively fixedly mounted on the first annular sleeve (110) and the second annular sleeve (111).

8. The paper conveying device of a digital printing press according to claim 1, characterized in that: The lifting component (20) comprises a mounting box (201), and a horizontal power mechanism for driving the mounting frame (104) to move horizontally is arranged on the mounting box (201).

9. The paper conveying device of a digital printing press according to claim 8, characterized in that: A lifting frame (203) that moves up and down is arranged inside the installation box (201), and two lifting rods (202) are installed in parallel on the lifting frame (203), and the lifting rods (202) are used to lift the storage and loading mobile trolley (40).

10. The paper conveying device of a digital printing press according to claim 9, characterized in that: The invention also includes a power mechanism, which includes a rack (204) and a gear (205). The rack (204) is arranged on the lifting frame (203), and the gear (205) is rotatably mounted on the installation box (201), and the gear (205) is meshed with the rack (204). The installation box (201) is also provided with a rotating motor for driving the gear (205) to rotate.

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