UV printing paper take-out mechanism

Abstract

The application discloses a UV printing paper taking mechanism in the technical field of printed paper taking, and aims to solve the problems of complicated paper taking procedure and difficult control in the prior art. The UV printing paper taking mechanism comprises a first support, a second support, a paper taking cylinder, a driving device and a vacuum generating device. The driving device is arranged on the first support and used for driving the paper taking cylinder to rotate. The paper taking cylinder is a hollow cylinder, and a plurality of suction holes are arranged around the paper taking cylinder. The vacuum generating device is fixedly arranged on the second support. A vacuumizing end of the vacuum generating device is arranged in the paper taking cylinder and used for providing negative pressure to the suction holes. The range of the negative pressure provided by the vacuum generating device to the paper taking cylinder is located on the side of the paper taking cylinder facing the printed paper. The application is used for supplying paper to a printing machine. The equipment has simple structure, is easy to apply and maintain, and has excellent use prospect.

Description

TECHNICAL FIELD

[0001] The application relates to a UV printing paper taking mechanism and belongs to the technical field of printing paper taking. BACKGROUND

[0002] Due to the use of ink and special printing process, UV printing has improved the quality and printing speed of printed matters. A traditional paper feeding mode for a printing machine usually adopts a corresponding negative pressure adsorption structure and a mechanical hand to cooperate with each other, utilizes reciprocating action and repeated vacuum extraction to realize the carrying of printing paper raw materials to the printing machine. The traditional mode has a complex action mechanism, high programming difficulty and high maintenance difficulty. The mechanical action requires a certain action cooperation precision to avoid paper taking errors. In addition, too fast paper feeding speed can easily cause the accumulation of paper at the paper feeding position of the printing machine, and too slow paper feeding speed can easily cause paper loss and affect the production progress, and the mode needs to be improved. SUMMARY

[0003] The application aims to overcome the defects in the prior art, provide a UV printing paper taking mechanism for supplying paper to a printing machine, and has simple equipment structure, easy application and maintenance, continuous paper feeding process by adopting continuous action, and excellent use prospect.

[0004] To achieve the above-mentioned purpose, the application adopts the following technical scheme:

[0005] The application provides a UV printing paper taking mechanism, which comprises a first support, a second support, a paper taking cylinder, a driving device and a vacuum generating device.

[0006] The driving device is arranged on the first support and used for driving the rotation of the paper taking cylinder. The paper taking cylinder is a hollow cylinder, and a plurality of adsorption holes are arranged around the paper taking cylinder. The vacuum generating device is fixedly arranged on the second support. The vacuum extraction end of the vacuum generating device is arranged in the interior of the paper taking cylinder and used for providing negative pressure to the adsorption holes. The action range of the negative pressure provided by the vacuum generating device to the paper taking cylinder is located on the side of the paper taking cylinder facing the paper to be printed.

[0007] Specifically, the vacuum generating device comprises an air pipe fixedly arranged on the second support. A plurality of air holes are arranged on the side of the air pipe facing the paper to be printed. Two cavity walls are arranged on the air pipe and close to or abut against the inner wall of the paper taking cylinder. The cavity walls, the outer wall of the air pipe and the inner wall of the paper taking cylinder form a negative pressure cavity. The plurality of air holes and the negative pressure cavity are connected with each other and used for providing negative pressure to the adsorption holes passing through the negative pressure cavity.

[0008] Specifically, the number of the adsorption holes is multiple. The multiple adsorption holes are arranged in a staggered manner on the paper taking cylinder. The adsorption action range of the multiple adsorption holes can surround the paper taking cylinder.

[0009] Specifically, the first support is provided with a plurality of auxiliary pressure rollers, the auxiliary pressure rollers are pressed on the surface of the paper to be printed, and the position height of the bottom surface of the paper taking cylinder is higher than that of the bottom surface of the auxiliary pressure roller.

[0010] Specifically, the first support is movably arranged on the first base, and the second support is movably arranged on the second base.

[0011] Specifically, the first support is provided with a plurality of first sliding rods penetrating the first base, the outer surface of the first sliding rod is sleeved with a first spring abutting at both ends between the first support and the first base, and the first support is provided with a first bolt threaded on the first base; the second support is provided with a plurality of second sliding rods penetrating the second base, the outer surface of the second sliding rod is sleeved with a second spring abutting at both ends between the second support and the second base, and the second support is provided with a second bolt threaded on the second base.

[0012] Specifically, the paper supply device further comprises a lifting device and a storage basket arranged on the lifting device.

[0013] Specifically, the air pipe is coaxially arranged with the paper taking cylinder, and a first bearing is arranged between the air pipe and the paper taking cylinder.

[0014] Specifically, the first support is provided with a plurality of vertically arranged sliding grooves, each of the sliding grooves is provided with a bearing seat, each of the bearing seats is adjustable in the sliding direction of the sliding groove, each of the bearing seats is rotatably arranged with a shaft, and a second bearing is arranged on the shaft to form a rotary connection with the auxiliary pressure roller.

[0015] Specifically, the first support is provided with a third spring for abutting the bearing seat downward, the first support is provided with a pressure sensor, and one end of the third spring abuts on the pressure sensor.

[0016] Compared with the prior art, the present application has the following beneficial effects:

[0017] The application opens adsorption holes on the paper taking cylinder, supplies negative pressure to the lower part of the paper taking cylinder by using vacuum generating device, the adsorption holes can first adsorb the paper below to be printed when the paper taking cylinder rotates, move a distance forward under the action of negative pressure until the paper naturally falls under the action of gravity after the action of negative pressure is removed, at this time, the rear end of the paper is continuously adsorbed and conveyed by the adsorption holes behind, until the supply of the whole paper is completed, the paper feeding mechanism compared with the traditional mechanism does not need to repeatedly switch the negative pressure action time, does not need to control the reciprocating motion of the mechanical hand to rise and fall, directly drives the rotation of the paper taking cylinder to realize the continuous supply of the paper, the uppermost paper taking is completed, the paper below can be automatically adsorbed to continue to take, the continuous supply effect is good, the supply is not easy to appear too fast or too slow phenomenon, the structure is simple and easy to design and maintain, has good application prospect. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is the overall structure schematic diagram of the UV printing paper taking mechanism provided by the embodiment of the application;

[0019] Figure 2 is the left view of the UV printing paper taking mechanism provided by the embodiment of the application;

[0020] Figure 3 is the right view of the UV printing paper taking mechanism provided by the embodiment of the application;

[0021] Figure 4 is the A-A direction sectional view of the UV printing paper taking mechanism provided by the embodiment of the application; Figure 3

[0022] Figure 5 is the B-B direction sectional view of the UV printing paper taking mechanism provided by the embodiment of the application; Figure 3

[0023] Figure 6 is the structure schematic diagram of the inside of the paper taking cylinder provided by the embodiment of the application;

[0024] Figure 7 is the paper taking state schematic diagram of the paper taking cylinder 4 provided by the application;

[0025] Figure 8 is the negative pressure area schematic diagram of the surface of the paper provided by the application;

[0026] ​​1, first support; 2, driving device; 3, connecting piece; 4, paper taking cylinder; 5, second support; 6, air pipe; 7, cavity wall; 8, first bearing; 9, bearing seat; 10, guide rod; 11, third spring; 12, shaft rod; 13, auxiliary compression roller; 14, pressure sensor; 15, lifting device; 16, storage basket; 17, first base; 18, first sliding rod; 19, first spring; 20, first bolt; 21, second base; 22, second bolt; 23, second bearing. Embodiment

[0027] The application will be further described below with reference to the drawings. The following examples are only used to more clearly illustrate the technical solutions of the application, and cannot be used to limit the protection scope of the application.

[0028] In the description of the present application, it needs to be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" and the like are only for description purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" and the like can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0029] In the description of the present application, it needs to be understood that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood through specific circumstances. Embodiment

[0030] The UV printing paper taking mechanism provided by the embodiment of the present application is used for supplying paper to a printing machine, and the device has simple structure, is easy to apply and maintain, and adopts a continuous action type to ensure the continuity of the paper feeding process, and has excellent practical prospect. In order to realize the above functions, the mechanism is provided with a first support 1, a second support 5, a paper taking cylinder 4, a driving device 2 and a vacuum generating device. Figure 1 or Figure 4As shown, wherein the driving device 2 is arranged on the first support 1 for driving the paper taking cylinder 4 to rotate, the driving device 2 is preferably a servo motor, the paper taking cylinder 4 and the motor can be connected and fixed through corresponding connecting pieces 3, the paper taking cylinder 4 is designed as a hollow cylinder and the paper taking cylinder 4 is provided with suction holes around the paper taking cylinder 4, and the vacuum generating device is fixedly arranged on the second support 5, the vacuum generating device is arranged in the inside of the paper taking cylinder 4 and is used for providing negative pressure to the suction holes, and the action range of the vacuum generating device to the paper taking cylinder 4 is located on the side of the paper taking cylinder 4 facing the to-be-printed paper. Figure 1 As shown, the paper taking cylinder 4 rotates continuously, and as shown, Figure 5 The inside of the vacuum generating position is constantly located below the inside of the paper taking cylinder 4, is used for supplying negative pressure to the suction holes below the current position, the suction holes below are transported a small distance after the to-be-printed paper is adsorbed, then the suction holes at the rear end move to the below position, the vacuum generating device supplies negative pressure to the suction holes at the position and releases the to-be-printed paper at the position where the suction holes are separated from the negative pressure, so as to realize the continuity of the device paper supply, and after the paper at the position is separated from the carrier, the suction holes continue to act on the paper below, so as to realize the automatic adsorption and flow of the next paper after the supply of the last paper is completed, and thus it is unnecessary to frequently switch the negative pressure action and to drive the reciprocating mechanism, the mechanism is reasonable and simple in arrangement and is easy to maintain, the automatic paper supply does not need program control and has excellent application prospect. It should be noted that the paper that can be adsorbed by the application should be a flexible paper, which needs to cooperate with the arc of the paper taking cylinder 4 to ensure a sufficient negative pressure action range, as shown in Figure 7 and Figure 8 As shown, Figure 7 It is a schematic view of the state position of the paper when the paper taking cylinder 4 rotates, for the hard paperboard and the like, the negative pressure provided by the application can only be on the line of contact, so that the vacuum leakage is easy to occur, and thus the paper supply other than the flexible paper cannot be realized. As shown, Figure 8 After the negative pressure region passes the end of the paper, it will automatically act on the next paper and can realize the automatic forward pushing of the next paper, is not easy to damage the paper and has good continuity.

[0031] The UV printing paper taking mechanism provided by the embodiment of the application specifically provides a structure form of the vacuum generating device to realize the above technical effects, specifically, the vacuum generating device arranged here includes a ventilation pipe 6 fixedly arranged on the second support 5, the ventilation pipe 6 is provided with a plurality of ventilation holes on the side facing the to-be-printed paper (normally below, because the paper is usually transported upward through stacking), and the ventilation pipe 6 is provided with two cavity walls 7 arranged close to or abutting the inner wall of the paper taking cylinder 4, which can be referred to as Figure 6As shown, the cavity wall 7, the outer wall of the air pipe 6 and the inner wall of the paper taking cylinder 4 form a negative pressure cavity between each other, and a plurality of air holes are in communication with the negative pressure cavity, for providing negative pressure to the suction holes passing through the negative pressure cavity. It should be noted that, since the cavity wall 7 needs to move relative to the cylinder wall of the paper taking cylinder 4, the cavity wall 7 can be designed not to be in contact with the cylinder wall to reduce the wear of the device during operation, but at this time, a larger negative pressure needs to be supplied. If a flexible lubricating contact is preferred, the loss of air chamber gas can be avoided, which is conducive to working under low negative pressure. It should be noted that the above two technical means are additional configurations made by those skilled in the art, and also belong to the protection scope of the present application.

[0032] The UV printing paper taking mechanism provided by the embodiment of the present application can refer to Figure 1 As shown, the number of suction holes is set to be multiple, and the multiple suction holes are arranged in a staggered manner and arranged in an array on the paper taking cylinder 4. In this way, the shape of the suction hole can be preferably O-shaped, and the shorter the length, the more accurate and stable the negative pressure provided under the action of the negative pressure chamber. However, in order to ensure the continuity of paper taking, it is necessary to ensure that the vacuum of the vacuum generating device can continuously act on the paper. Therefore, the suction range of the multiple suction holes can surround or include one cycle of the paper taking cylinder 4. In addition, as shown in Figure 1 and Figure 8 After the suction holes are arranged in this way, the action range of the negative pressure will be constantly in a rectangular space to realize full coverage in the transverse direction. When the paper taking cylinder 4 supplies paper to the printing machine, the front end of the paper needs to be affected by free sagging before it can be transported to the paper taking roller of the printing machine. Therefore, if there is a disconnected area of negative pressure near the end of the paper taking roller, the front end of the paper will be difficult to maintain a stable height, and even the sudden disconnection of local negative pressure during the transportation process may cause the paper to sag and be separated from the paper taking cylinder 4 due to the action of speed inertia, which seriously affects the stable supply effect of the paper. Therefore, by making the action range of the suction holes surround one cycle of the paper taking cylinder 4, the above problems can be effectively solved.

[0033] The UV printing paper taking mechanism provided by the embodiment of the present application is used for guaranteeing the stable conveying of the paper and preventing the paper from tilting when the front end of the paper falls down, and a plurality of auxiliary compression rollers 13 are arranged on the first support 1, which are used for gently pressing the surface of the paper to be printed to prevent the paper from tilting or running away, and the printing paper is conveyed and then taken by the paper feeding mechanism of the printing machine. In order to prevent the paper taking cylinder 4 from exerting too large friction force to cause the whole backup printing paper to tilt, the position height of the bottom surface of the paper taking cylinder 4 is higher than that of the bottom surface of the auxiliary compression roller 13, and the height is preferably 0.5-2 mm. At this time, the auxiliary compression roller 13 directly contacts the paper, and the paper taking cylinder 4 leaves a certain gap with the paper to be taken. The larger the gap is, the higher the required adsorption force of the paper is, and the smaller the required negative pressure action range between the cavity walls 7 is. In addition, the driving force of the negative pressure for adsorbing and driving the paper to advance is also related to the diameter of the paper taking cylinder 4. The larger the diameter is, the closer the negative pressure action range is to the paper, and the more helpful it is to adsorb the paper. If the whole paper is too large, a plurality of groups of paper taking cylinders 4 can be used in cooperation to improve the driving ability of the negative pressure action. In order to facilitate the adjustment of the position of the auxiliary compression roller 12, a plurality of vertical sliding grooves are arranged on the first support 1, a bearing seat 9 is arranged in each sliding groove, each bearing seat 9 is adjustable in the sliding direction of the sliding groove, an axle rod 12 is rotatably arranged in each bearing seat 9, and a second bearing 23 is assembled on the axle rod 12 to form a rotary connection with the auxiliary compression roller 13.

[0034] The UV printing paper taking mechanism provided by the embodiment of the present application is used for guaranteeing the stable conveying of the paper and preventing the paper from tilting when the front end of the paper falls down, and a plurality of auxiliary compression rollers 13 are arranged on the first support 1, which are used for gently pressing the surface of the paper to be printed to prevent the paper from tilting or running away, and the printing paper is conveyed and then taken by the paper feeding mechanism of the printing machine. In order to prevent the paper taking cylinder 4 from exerting too large friction force to cause the whole backup printing paper to tilt, the position height of the bottom surface of the paper taking cylinder 4 is higher than that of the bottom surface of the auxiliary compression roller 13, and the height is preferably 0.5-2 mm. At this time, the auxiliary compression roller 13 directly contacts the paper, and the paper taking cylinder 4 leaves a certain gap with the paper to be taken. The larger the gap is, the higher the required adsorption force of the paper is, and the smaller the required negative pressure action range between the cavity walls 7 is. In addition, the driving force of the negative pressure for adsorbing and driving the paper to advance is also related to the diameter of the paper taking cylinder 4. The larger the diameter is, the closer the negative pressure action range is to the paper, and the more helpful it is to adsorb the paper. If the whole paper is too large, a plurality of groups of paper taking cylinders 4 can be used in cooperation to improve the driving ability of the negative pressure action. In order to facilitate the adjustment of the position of the auxiliary compression roller 12, a plurality of vertical sliding grooves are arranged on the first support 1, a bearing seat 9 is arranged in each sliding groove, each bearing seat 9 is adjustable in the sliding direction of the sliding groove, an axle rod 12 is rotatably arranged in each bearing seat 9, and a second bearing 23 is assembled on the axle rod 12 to form a rotary connection with the auxiliary compression roller 13.

[0035] The UV printing paper taking mechanism provided by the embodiment of the present application considers that the height difference between the paper taking cylinder 4 and the paper becomes larger and larger with the use of the paper, and at this time, the negative pressure will be difficult to continue to act on the paper. Therefore, the mechanism further comprises a paper supply device. Specifically, the paper supply device comprises a lifting device 15 and a storage basket 16 arranged at the lifting end of the lifting device 15. The storage basket 16 is used to store the paper to be printed, and the lifting device 15 is used to move the storage basket 16 upward after the paper is consumed to a certain extent. Preferably, a corresponding paper sensing unit can be arranged on the paper supply device, such as an infrared distance measuring device for height difference, a fiber sensor for detecting whether the paper passes, and the like.

[0036] The UV printing paper taking mechanism provided by the embodiment of the present application considers that the height difference between the paper taking cylinder 4 and the paper becomes larger and larger with the use of the paper, and at this time, the negative pressure will be difficult to continue to act on the paper. Therefore, the mechanism further comprises a paper supply device. Specifically, the paper supply device comprises a lifting device 15 and a storage basket 16 arranged at the lifting end of the lifting device 15. The storage basket 16 is used to store the paper to be printed, and the lifting device 15 is used to move the storage basket 16 upward after the paper is consumed to a certain extent. Preferably, a corresponding paper sensing unit can be arranged on the paper supply device, such as an infrared distance measuring device for height difference, a fiber sensor for detecting whether the paper passes, and the like.

[0037] The UV printing paper taking mechanism provided by the embodiment of the present application considers that the height difference between the paper taking cylinder 4 and the paper becomes larger and larger with the use of the paper, and at this time, the negative pressure will be difficult to continue to act on the paper. Therefore, the mechanism further comprises a paper supply device. Specifically, the paper supply device comprises a lifting device 15 and a storage basket 16 arranged at the lifting end of the lifting device 15. The storage basket 16 is used to store the paper to be printed, and the lifting device 15 is used to move the storage basket 16 upward after the paper is consumed to a certain extent. Preferably, a corresponding paper sensing unit can be arranged on the paper supply device, such as an infrared distance measuring device for height difference, a fiber sensor for detecting whether the paper passes, and the like.

[0038] The above is only the preferred embodiment of the present application, and it should be pointed out that, for ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and modifications can be made, and these improvements and modifications should be considered as the protection scope of the present application.

Claims

1. A UV printing paper taking mechanism, comprising a first support (1), a second support (5), a paper taking cylinder (4), a driving device (2) and a vacuum generating device; the driving device (2) is arranged on the first support (1) for driving the paper taking cylinder (4) to rotate, the paper taking cylinder (4) is a hollow cylinder, and suction holes are arranged around the paper taking cylinder (4) on the paper taking cylinder (4); the vacuum generating device is fixedly arranged on the second support (5), a vacuumizing end of the vacuum generating device is arranged in the interior of the paper taking cylinder (4) and is used for providing negative pressure to the suction holes, and an action range of the vacuum generating device for providing negative pressure to the paper taking cylinder (4) is located on a side of the paper taking cylinder (4) facing the paper to be printed, characterized in that a plurality of auxiliary compression rollers (13) are arranged on the first support (1), the auxiliary compression rollers (13) are pressed on the surface of the paper to be printed, and the position height of the bottom surface of the paper taking cylinder (4) is higher than the position height of the bottom surface of the auxiliary compression rollers (13); a first base (17) and a second base (21) are further included, the first support (1) is movably arranged on the first base (17), and the second support (5) is movably arranged on the second base (21); a plurality of first sliding rods (18) penetrating through the first base (17) are arranged on the first support (1), a first spring (19) with two ends abutting against the first support (1) and the first base (17) respectively is arranged on the outer surface of the first sliding rod (18), and a first bolt (20) threadedly connected to the first base (17) is arranged on the first support (1) and penetrates through the first support (1); a plurality of second sliding rods penetrating through the second base (21) are arranged on the second support (5), a second spring with two ends abutting against the second support (5) and the second base (21) respectively is arranged on the outer surface of the second sliding rod, and a second bolt (22) threadedly connected to the second base (21) is arranged on the second support (5) and penetrates through the second support (5); a plurality of vertical sliding grooves are arranged on the first support (1), a bearing seat (9) is arranged in each sliding groove, each bearing seat (9) is adjustable in the sliding direction of the sliding groove, an axle rod (12) is rotatably arranged in each bearing seat (9), and a second bearing (23) is arranged on the axle rod (12) and is used for forming rotary connection with the auxiliary compression roller (13); a third spring (11) for abutting downwardly against the bearing seat (9) is arranged on the first support (1), a pressure sensor (14) is arranged on the first support (1), and one end of the third spring (11) abuts against the pressure sensor (14).

2. A UV printing paper take-up mechanism according to claim 1, wherein The vacuum generating device comprises a ventilation pipe (6) fixedly arranged on the second support (5), the ventilation pipe (6) is provided with a plurality of ventilation holes towards the side of the paper to be printed, the ventilation pipe (6) is provided with two cavity walls (7) close to or abutting the inner wall of the paper taking cylinder (4), the cavity wall (7), the outer wall of the ventilation pipe (6) and the inner wall of the paper taking cylinder (4) form a negative pressure cavity, and the plurality of ventilation holes and the negative pressure cavity are in communication for providing negative pressure to the suction holes passing through the negative pressure cavity.

3. The UV printing paper pickup mechanism of claim 1, wherein, The number of the suction holes is multiple, the multiple suction holes are arranged in an interlaced manner and in an array on the paper taking cylinder (4), and the suction range of the multiple suction holes can surround the paper taking cylinder (4).

4. The UV printing paper pickup mechanism of claim 1, wherein, Further comprising a paper supply device, the paper supply device comprises a lifting device (15) and a storage basket (16) arranged on the lifting end of the lifting device (15).

5. The UV printing paper pickup mechanism of claim 2, wherein, The ventilation pipe (6) is coaxially arranged with the paper taking cylinder (4), and the ventilation pipe (6) and the paper taking cylinder (4) are assembled with a first bearing (8).

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