CN116853884B - Paper collection device for special thin paper sheet lithography - Google Patents

Abstract

The application belongs to the technical field of paper printing, and particularly relates to a paper collecting device for special thin paper sheet lithography, which comprises the following components: and the collecting part is arranged at the paper outlet end of the offset press. According to the application, the included angle between the bearing disc and the base can be changed by utilizing the inclination angle adjusting part, so that the bearing disc is in a micro-inclination state, the papers which are subsequently conveyed out of the lithographic printing machine can fall well under the influence of the gravity of the conveyor and the papers, when the collecting part drives the bearing disc to move downwards, the auxiliary module is enabled to operate, part of the papers which fall on the bearing disc is blown, the gap between each piece of papers is increased, the paper finishing part is enabled to operate while the collecting part operates, the blown papers are finished, and the papers are smoothly collected on the bearing disc so as to adapt to the transmission and stacking requirements of special paper sheets, and the uniformity of the collected papers is improved.

Description

Paper collection device for special thin paper sheet lithography

Technical Field

The application belongs to the technical field of paper printing, and particularly relates to a paper collecting device for special thin paper sheet offset printing.

Background

Ultra-thin sheet lithography is a common printing technique used to produce high quality prints. The extra-thin paper sheet generally refers to a paper having a thickness of between 0.03 mm and 0.1 mm, and is mainly used for making printed matters such as books, magazines, newspapers, packaging materials, labels, and the like. The paper is characterized by being light and thin and having high strength and printing quality. However, for very thin sheet lithography, the characteristics of the paper make it more fragile and fragile during transport. The traditional paper collection device is often unable to effectively adapt to special requirements of extra-thin paper, and the paper is easy to fold, bend or accumulate irregularly, so that the printing quality and the production efficiency are affected.

The paper collection device in the prior art often adopts a fixed horizontal bearing disc, can not flexibly adjust the inclination angle of the bearing disc according to the thickness and the characteristics of different papers, leads to extra thin papers falling onto the bearing disc from a conveying belt of a lithographic printing machine, is easy to receive larger pressure and friction force, and further leads to folding, bending and damage, causes irregular accumulation, and influences subsequent printing work and automatic treatment. If chinese patent publication No. CN219031262U discloses a paper unloading pile up neatly device, the loading board sets up to two and can slide through the linear slide rail and remove, but the drive of electronic slide rail is down, constantly collect along with the paper and descend, guarantee that the height of falling paper on the loading board is in appointed height all the time, realize the automatic stable collection of paper, but the paper relies on the transport of offset press when falling into the loading board, but because the paper in place in-process, receive below paper frictional force easily, there is folding, bending or damage easily, and the falling paper is the transport mechanism traction of relying on the printer afterbody entirely, lack the arrangement, very easily lead to the stack untidy, influence follow-up printing work and automated handling, like chinese patent publication No. CN218174136U, a paper collection device is disclosed, make the interior paper height of collection box all the time correspond with outside paper delivery end discharge end, and then guarantee to collect pile up neatly by the framework after being exported by outside paper delivery end, it also has above-mentioned problem.

In addition, in the paper collecting device, the height of the paper collecting device can be adjusted along with the paper after the paper is gradually accumulated, but for special tissue paper, the height of the special tissue paper is difficult to accurately reduce due to the thickness and the weight of the special tissue paper, so that the paper collecting device is different from the traditional stacking mode, and the lifting mechanism obviously cannot meet the requirement on the precision of the special tissue paper.

Disclosure of Invention

The application aims to provide a paper collecting device for special thin paper sheet lithography, which can adjust the inclination angle of a bearing disc when collecting paper so as to adapt to the transmission and stacking requirements of special thin paper sheets, further reduce the influence of friction force of the paper sheets, adjust the paper receiving height according to actual requirements, and finish the paper sheets in the height adjusting process, thereby ensuring better paper collecting effect.

The technical scheme adopted by the application is as follows:

a sheet collection apparatus for use in a lithographic printing press comprising:

the collecting part is arranged at the paper outlet end of the lithographic printing machine, a base is arranged in the collecting part, a bearing disc is arranged at the upper end of the base, a supporting plate is arranged at the upper end of the bearing disc, and an inclination angle adjusting part is arranged between the base and the bearing disc, wherein the inclination angle of the base and the bearing disc is changed when the inclination angle adjusting part operates;

the auxiliary module is arranged in the collecting part, one end of the auxiliary module is arranged between the bearing disc and the paper outlet end of the lithographic printing machine, the auxiliary module is used for blowing air between paper sheets, a driving mechanism used for driving the base to move up and down is arranged in the collecting part, and when the height of the paper sheets on the bearing disc reaches a threshold value, the driving mechanism is operated to move the base downwards and drive the auxiliary module to operate;

and the paper finishing part is arranged at the inner side of the collecting part and is close to the side surface of the bearing disc, and when the driving mechanism operates, the paper finishing part is used for finishing paper on the bearing disc.

In a preferred scheme, inclination adjustment portion includes connecting block a, goes up connecting rod a and lower connecting rod a, connecting block a internal thread connection has drive division, go up connecting rod a and rotate the one end of connecting block a and connect, go up connecting rod a and keep away from connecting block a's one end and be connected with the bearing disc rotation, lower connecting rod a rotates the one end of connecting rod a of connecting block a and connecting, lower connecting rod a keeps away from connecting block a's one end and rotates with the base to be connected.

In a preferred scheme, the driving mechanism comprises a fixed end and a movable end, wherein the fixed end is installed inside the collecting part, the movable end is installed on the fixed end, and the movable end is in sliding connection with the collecting part.

In a preferred scheme, the auxiliary module comprises a pressing plate, an air bag, a connecting pipe, an air blowing pipe and a rubber sheet, wherein the pressing plate is connected in the collecting part in a sliding manner, the pressing plate is fixed at the lower end of the moving end, the air bag is arranged in the collecting part and is positioned below the pressing plate, the connecting pipe is fixed at one side of the lower end of the air bag, the air blowing pipe is arranged at one end, far away from the pressing plate, of the connecting pipe, and the rubber sheet is arranged between the air blowing pipe and the connecting pipe;

in a preferred scheme, the cross opening is formed in the rubber sheet, and in a normal state, the cross opening of the rubber sheet is in a closed state, and when the rubber sheet is subjected to gas pressure, the cross opening of the rubber sheet is in an open state.

In a preferred embodiment, the balloon is corrugated.

In a preferred scheme, the paper finishing portion includes vibration source, vibrating plate, stiffener and tension member, the vibrating plate sets up between collecting portion and loading tray, the vibration source is fixed in the vibrating plate one side of keeping away from the loading tray, the stiffener is also fixed in the vibrating plate one side of keeping away from the loading tray, just stiffener and collecting portion sliding connection, tension member sets up in the outside of stiffener and is located between vibrating plate and the loading tray.

The application has the technical effects that:

according to the application, the included angle between the bearing disc and the base can be changed by utilizing the inclination angle adjusting part, so that the bearing disc is in a micro-inclination state, the papers which are subsequently conveyed out of the lithographic printing machine can be better landed under the influence of the gravity of the conveyor and the papers, and the papers can be placed in place due to factors such as friction among the papers in the process of collecting, so that the papers are not placed in place easily in the continuous collecting process, when the bearing disc is driven to move downwards by the collecting part, the auxiliary module is operated, part of the papers which fall on the bearing disc is blown, the gap among each paper is increased, the whole paper part is operated while the collecting part is operated, the blown papers are tidied, and the papers are flatly collected on the bearing disc, so that the requirements of conveying and stacking of special tissue papers can be met, the mechanical stress and friction force on the papers can be reduced, and the damage and deformation of the papers are reduced;

according to the application, when the inclination angle of the bearing disc is adjusted, the inclination angle adjusting part operates and drives the inclination angle observing part to operate when the driving part is rotated, the inclination angle of the bearing disc is observed by observing the data on the surface of the inclination angle observing part, and then the driving part is rotated, so that the data of the inclination angle observing part are kept consistent, the dyssynchrony of the internal adjustment of the reinforcement of a plurality of inclination angles is avoided, the convenience of adjustment is improved, and the stability of the inclination angle fixing of the bearing disc is ensured.

Drawings

FIG. 1 is a schematic view of the overall structure of the present application;

FIG. 2 is a schematic view of the structure of the collection portion, base, carrier tray and support plate of the present application;

FIG. 3 is a schematic view of the structure of the carrier plate with tilt angle adjusted according to the present application;

FIG. 4 is a schematic view of the structure of the carrier plate with unadjusted tilt angle;

FIG. 5 is a schematic view of the auxiliary module of the present application;

FIG. 6 is a schematic view of the structure of the whole paper section of the present application;

FIG. 7 is a schematic view of the structure of the driving part, the tilt adjusting part, the tilt reinforcing part and the tilt observing member between the base and the carrier plate according to the present application;

FIG. 8 is a schematic view showing the structures of the driving part, the inclination adjusting part and the inclination reinforcing part of the present application;

FIG. 9 is a schematic diagram of the driving part and the tilt angle observation member according to the present application;

FIG. 10 is a schematic view of the structure of the tilt angle observer of the present application;

FIG. 11 is a cross-sectional view of a stabilization part of the present application;

fig. 12 is an exploded view of the stabilizing portion and one-way drive member of the present application.

In the drawings, the list of components represented by the various numbers is as follows:

1. a lithographic printing machine; 2. a collection section; 3. a base; 4. a carrying tray; 5. a support plate;

10. a driving section; 11. rotating the column; 12. driving a screw; 13. a driving source;

20. an inclination angle adjusting part; 21. a connecting block a; 22. an upper connecting rod a; 23. a lower connecting rod a;

30. an inclination angle reinforcing part; 31. a connecting block b; 32. an upper connecting rod b; 33. a lower connecting rod b; 34. an upper slider; 35. a lower slide block;

40. an inclination angle observation member; 41. a housing; 42. a connecting column; 43. a clockwork spring a; 44. a flexible ruler; 45. a partition plate;

50. an auxiliary module; 51. a pressing plate; 52. an air bag; 53. a connecting pipe; 54. an air blowing pipe; 55. a rubber sheet;

60. a paper finishing part; 61. a vibration source; 62. a vibration plate; 63. a reinforcing rod; 64. a tension member;

70. a stabilizing portion; 71. a fixed case; 72. a fixed rod; 73. a wire rope; 74. a hook;

80. a unidirectional transmission member; 81. a protection plate; 82. a ratchet wheel; 83. a pawl; 84. a torsion spring; 85. a pull rod; 86. and a spiral spring b.

Detailed Description

In order that the above-recited objects, features and advantages of the present application will become more readily apparent, a more particular description of the application will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, but the present application may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present application is not limited to the specific embodiments disclosed below.

Further, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic can be included in at least one implementation of the application. The appearances of the phrase "in one preferred embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.

Further, in describing the embodiments of the present application in detail, the cross-sectional view of the device structure is not partially enlarged to a general scale for convenience of description, and the schematic is only an example, which should not limit the scope of protection of the present application. In addition, the three-dimensional dimensions of length, width and depth should be included in actual fabrication.

Referring to fig. 1 to 6, a first embodiment of the present application provides a sheet collecting apparatus for special sheet offset printing, comprising:

the collecting part 2, the collecting part 2 is set up in the paper outlet end of the planographic printing machine 1, the planographic printing machine 1 has at least printing machine and upper paper conveying and paper outlet conveying part, here the paper outlet end corresponds to the outlet of the paper outlet conveying part, wherein, the paper outlet conveying part can be a conveyor with conveying function, and the outlet of the conveyor should be higher than the bearing disc 4 on the collecting part 2, the inside of the collecting part 2 has a base 3, the upper end of the base 3 is provided with the bearing disc 4, the upper end of the bearing disc 4 is provided with a supporting plate 5, there is an inclination angle adjusting part 20 between the base 3 and the bearing disc 4, when the inclination angle adjusting part 20 operates, the inclination angle of the base 3 and the bearing disc 4 is changed, wherein, by adjusting the inclination angle of the bearing disc 4, the bearing disc 4 is in a slight inclined state, so that the paper subsequently conveyed from the planographic printing machine 1 can be well located under the influence of the gravity of the conveyor and the paper itself;

the auxiliary module 50 is arranged in the collecting part 2, one end of the auxiliary module 50 is arranged between the bearing disc 4 and the paper outlet end of the lithographic printing machine 1, the auxiliary module 50 is used for blowing air between paper sheets, a driving mechanism used for driving the base 3 to move up and down is arranged in the collecting part 2, and when the height of the paper sheets on the bearing disc 4 reaches a threshold value, the driving mechanism is operated to move the base 3 down and drive the auxiliary module 50 to operate;

the paper finishing part 60, the paper finishing part 60 is arranged at the inner side of the collecting part 2 and near the side surface of the carrying tray 4, and the paper finishing part 60 is used for finishing the paper blown by the auxiliary module 50.

Specifically, when the inclination angle of the carrying tray 4 is adjusted, the inclination angle adjusting part 20 is operated to change the included angle between the carrying tray 4 and the base 3, so that the carrying tray 4 is in a slight inclination state, the papers subsequently conveyed from the lithographic printing machine 1 can fall well under the influence of the gravity of the conveyer and the papers, the papers fall on the carrying tray 4 through the paper outlet end of the lithographic printing machine 1, when the driving mechanism drives the carrying tray 4 to move downwards, the auxiliary module 50 is operated to blow part of the papers falling on the carrying tray 4, and as the paper at the upper end with a set distance is aimed, the whole weight of the part of the papers is not large, the blowing process can be slight, so that the gap between each paper is increased while the whole layout of the papers is not influenced, and the force of blowing can be increased according to the circumstances, while the collecting part 2 is operated, the whole paper part 60 is operated to clean the blown papers, so that the blown papers are smoothly collected on the carrying tray 4, so as to meet the requirements of transmission and stacking of special papers.

It should be noted that, when the paper falls onto the tray 4 after the inclination angle of the tray 4 is adjusted, the tray 4 slides down on the tray 4 by the self weight of the paper and contacts the supporting plate 5 to collect the paper, but the ultra-thin paper on the market is generally 22g, so that the inclination angle of the tray 4 can be adjusted appropriately according to the use requirement, and for some ultra-thin paper, such as 19g ultra-thin paper, the inclination angle of the tray 4 needs to be increased because 19g is relatively 22g lighter when collecting the paper, so that the ultra-thin paper of 19g slides on the tray 4 and approaches the supporting plate 5.

It is worth mentioning that the base 3 is arranged on the lifting mechanism, and is used for the lifting mechanism to drive the base 3 to move up and down, when collecting paper, the paper falls on the carrying tray 4 through the paper outlet end of the lithographic printing machine 1, the paper is gradually increased, when reaching a certain height threshold, the lifting mechanism operates, and drives the base 3 to move downwards for a certain distance, which can be 1cm, 2cm or 3cm, but not limited to the above distance, by arranging a sensor (which can be a photosensitive sensor arranged at the inner side of the collecting part) at the collecting part 2, the effect of triggering the threshold can be achieved by shielding the light source after the paper is piled up, or can be a distance sensor, the displacement of the distance sensor is reduced by paper blocking, triggering can be achieved, and in particular can be other sensors) for detecting the height of the current paper collection, when reaching the threshold, the sensor is triggered, namely when the paper is accumulated to the height of the blocking sensor, triggering a controller and other devices to activate the lifting mechanism to enable the lifting mechanism to descend by a designated height, namely the set distance (which may be 1cm, 2cm or 3 cm), wherein the height of the air outlet end of the auxiliary module 50 is lower than the distance of a downward moving height of the lifting mechanism, the specific height difference is equal to the distance of the downward moving height of the lifting mechanism, the papers are collected through displacement of a stepwise fixed distance, so that the falling position of the papers can always keep a better state, the specific starting of the lifting mechanism can be directly controlled through PLC programming, the control mode is also the prior art, repeated description is omitted, the stepwise fixed distance displacement base 3 is selected, the precision requirement of the lifting mechanism can be reduced, especially for thin papers, the single paper is smaller in thickness and is not suitable for a conventional stacking mode, especially when the paper thickness is less, the synchronous lifting precision to elevating system is very high, consequently select the mode of using the fixed distance decline of stage, obviously more be fit for present ultra-thin paper printing and use, backup pad 5 keeps away from and bears 4 and be provided with electric putter for when base 3 is placed subaerial, support backup pad 5, also be prior art mature, need not repeated here.

In addition, because the paper is not placed in place due to factors such as friction among the paper in the collecting process, the paper is not placed in order easily in the continuous collecting process, and therefore the paper is sorted by utilizing each downward moving process under the technology of matching with the stepwise lifting, so that the finally collected paper is stacked in a good state and is not easy to have larger deviation.

In a preferred embodiment, referring to fig. 7 and 8, the inclination adjusting portion 20 includes a connection block a21, an upper connection rod a22 and a lower connection rod a23, wherein the driving portion 10 is screwed inside the connection block a21, the upper connection rod a22 is rotatably connected to one end of the connection block a21, one end of the upper connection rod a22 away from the connection block a21 is rotatably connected to the bearing disc 4, the lower connection rod a23 is rotatably connected to one end of the connection block a21 away from the upper connection rod a22, and one end of the lower connection rod a23 away from the connection block a21 is rotatably connected to the base 3.

Above-mentioned, when adjusting the inclination of loading tray 4, adjust drive division 10, will drive connecting block a21 and remove, because of the both ends of last connecting rod a22 rotate with loading tray 4 and connecting block a21 respectively and be connected, the both ends of lower connecting rod a23 rotate with base 3 and connecting block a21 respectively and be connected, base 3 rotates with loading tray 4 and is connected, make the contained angle between upper connecting rod a22 and the lower connecting rod a23 increase gradually, and then make the contained angle between base 3 and the loading tray 4 increase, thereby adjust the inclination of loading tray 4, wherein through setting up slight inclination with the loading tray, make the paper that follow-up follow offset printer 1 carries out can be under the influence of conveyer and paper self gravity, better fall, and when the paper accumulation is more, the paper can be held by backup pad 5, reduce its possibility of empting.

Still further, the driving mechanism includes a fixed end and a movable end, the fixed end is installed inside the collecting portion 2, the movable end is installed on the fixed end, and the movable end is slidably connected with the collecting portion 2.

It should be noted that, the moving end includes a driving source, the driving source includes a motor and a screw rod, the fixed end is a supporting bottom plate, the motor is fixed at the collecting portion 2, the screw rod is fixed at the output end of the motor, the supporting bottom plate slides in the collecting portion 2, the supporting bottom plate is in threaded connection with the screw rod, and is used for driving the screw rod to rotate by the motor, so as to drive the supporting bottom plate to move up and down.

Still further, referring to fig. 5, the auxiliary module 50 includes a pressing plate 51, an air bag 52, a connecting pipe 53, an air blowing pipe 54 and a rubber sheet 55, wherein the pressing plate 51 is slidably connected inside the collecting portion 2, the pressing plate 51 is fixed at the lower end of the moving end, the air bag 52 is disposed inside the collecting portion 2 and below the pressing plate 51, the connecting pipe 53 is fixed at one side of the lower end of the air bag 52, the air blowing pipe 54 is mounted at one end of the connecting pipe 53 far away from the pressing plate 51, and the rubber sheet 55 is disposed between the air blowing pipe 54 and the connecting pipe 53.

The rubber sheet 55 is provided with a cross opening therein, and in a normal state, the cross opening of the rubber sheet 55 is in a closed state, and when the rubber sheet 55 is subjected to gas pressure, the cross opening of the rubber sheet 55 is in an open state.

It should be noted that, the pressing plate 51 is fixed at the lower part of the supporting bottom plate, and is used for synchronously driving the pressing plate 51 to move when the lifting mechanism drives the base 3 to move up and down, when the pressing plate 51 moves down, the air bag 52 is forced to squeeze, so that the air in the air bag 52 is discharged through the connecting pipe 53 and the air blowing pipe 54, and when the pressing plate 51 moves up, the air bag 52 is stretched, so that the external air enters the air bag 52.

It should be noted that the air bag 52 is corrugated, so that the air bag 52 can be compressed or stretched according to a predetermined track, and enough moving space is reserved in the collecting portion 2, so that the compression of the air bag 52 is not limited.

Above-mentioned, when collecting the paper, elevating system drives base 3 and moves down, will make clamp plate 51 follow the downwardly moving, and make gasbag 52 atress compression, make the inside gas of gasbag 52 get into the inside of connecting pipe 53, exert a thrust to sheet rubber 55, make the cross opening of sheet rubber 55 be open-phase, and then make the gas discharge through blowing pipe 54, the paper that collects the top of loading tray 4 blows, make the gas get into between the paper, make the clearance between the paper increase, so that through the weight of paper itself, cooperate the blowing of gas, make the paper move on paper loading tray 4, and near backup pad 5, promote the regularity of collecting the paper, when whole paper portion 60 operates simultaneously, the in addition, elevating system moves up the in-process of resetting, gasbag 52 can inhale the reset through blowing pipe 54, so that the follow-up can be used repeatedly.

Still further, referring to fig. 2 and 6, the paper-finishing portion 60 includes a vibration source 61, a vibration plate 62, a reinforcing rod 63 and a tension member 64, the vibration plate 62 is disposed between the collecting portion 2 and the carrying tray 4, the vibration source 61 is fixed on a side of the vibration plate 62 away from the carrying tray 4, the reinforcing rod 63 is also fixed on a side of the vibration plate 62 away from the carrying tray 4, and the reinforcing rod 63 is slidably connected with the collecting portion 2, and the tension member 64 is disposed outside the reinforcing rod 63 and between the vibration plate 62 and the carrying tray 4.

The vibration source 61 may be a vibration motor fixed to the vibration plate 62, but in other embodiments, the driving source 13 may be an electric or various types or vibration power devices, the tension member 64 may be a coil spring, and the coil spring may be disposed outside the reinforcing rod 63 and between the vibration plate 62 and the carrier plate 4, or may be a variety of types or elastic devices.

Above-mentioned, collecting paper, elevating system drives base 3 and moves down, when driving auxiliary module 50, will make vibration source 61 operation, drive vibrating plate 62 and stiffener 63 horizontal lateral movement to make tension member 64 extrude repeatedly, make vibrating plate 62 reciprocating motion between collecting part 2 and loading tray 4, exert thrust to the paper that is blown, arrange in the middle the paper, make paper forehead edge neatly arrange, promote the collection effect of guarantee paper. Specifically, the triggering of the vibration source 61 may be selectively connected to the triggering end of the lifting mechanism by using a wire, that is, when the triggering end triggers, the vibration source 61 is triggered synchronously, so that the synchronicity of air blowing and vibration is achieved, and the stacking of the paper sheets is tidier.

A second embodiment of the present application is a further improvement of the first embodiment, specifically:

referring to fig. 7 and 8, an inclination angle reinforcing portion 30 is further disposed between the base 3 and the carrier plate 4, the inclination angle reinforcing portion 30 includes a connecting block b31, an upper connecting rod b32, a lower connecting rod b33, an upper slider 34 and a lower slider 35, the driving portion 10 is screwed inside the connecting block b31, the upper connecting rod b32 is rotatably connected to one end of the connecting block b31, the upper slider 34 is rotatably connected to one end of the upper connecting rod b32 far away from the connecting block b31, the upper slider 34 is slidably connected with the carrier plate 4, the lower connecting rod b33 is rotatably connected to one end of the connecting block b31 far away from the upper connecting rod b32, the lower slider 35 is rotatably connected to one end of the lower connecting rod b33 far away from the connecting block b31, and the lower slider 35 is slidably connected with the base 3.

When the base 3 and the carrier tray 4 are parallel, the upper slider 34 and the lower slider 35 are respectively located at the sliding ends of the carrier tray 4 and the base 3, and when the tilt angle of the carrier tray 4 is changed after the tilt angle adjusting portion 20 is adjusted, the tilt angle reinforcing portion 30 is adjusted, and when the tilt angle reinforcing portion 30 and the tilt angle adjusting portion 20 are in the same straight line, the upper slider 34 and the lower slider 35 are respectively located at the sliding ends of the carrier tray 4 and the base 3, so that the positions of the upper slider 34 and the lower slider 35 are limited, and the carrier tray 4 is prevented from being subjected to paper pressure, thereby changing the positions of the upper slider 34 and the lower slider 35.

When the inclination adjusting portion 20 is adjusted, the included angle between the base 3 and the carrier plate 4 is changed, because the driving screw 12 connected with the inclination reinforcing portion 30 is rotated, the position of the connecting block b31 is not changed, so that the upper slider 34 slides in the carrier plate 4, the lower slider 35 slides in the base 3, so that the included angle between the upper connecting rod b32 and the lower connecting rod b33 is changed, after the inclination adjusting portion 20 is adjusted, the driving screw 12 connected with the inclination reinforcing portion 30 is rotated, so that the position of the connecting block b31 moves to be in the same line with the connecting block a21, in the process, the upper slider 34 and the lower slider 35 are driven to move in the carrier plate 4 and the base 3 respectively, when the position of the connecting block b31 moves to be in the same line with the connecting block a21, the upper slider 34 and the lower slider 35 move in the carrier plate 4 and the base 3 respectively to the end of the chute, and the supporting force of the upper connecting rod b32 and the lower connecting rod b33 to the carrier plate 3 can be improved through the abutment of the upper slider 34 and the end of the chute when the carrier plate 4 is pressed by paper.

Still further, referring to fig. 7 to 9, the driving portion 10 includes a rotating column 11, a driving screw 12 and a driving source 13, the rotating column 11 is rotatably connected between the base 3 and the carrying disc 4, the driving screw 12 is rotatably connected inside the rotating column 11, the driving source 13 is disposed at one side of the rotating column 11, an output end of the driving source 13 is fixedly connected with the driving screw 12, the driving screw 12 in the middle of the lower portion of the carrying disc 4 is in threaded connection with the connecting block a21, and the driving screws 12 in the two ends of the lower portion of the carrying disc 4 are in threaded connection with the connecting block b 31.

The driving source 13 is a motor, and an output end of the motor is fixedly connected with the driving screw 12 to control rotation of the driving screw 12, however, in other embodiments, the driving source 13 may be an electric or various types or rotary power devices.

In this embodiment, when adjusting the inclination of the carrying tray 4, the driving source 13 connected with the inclination adjusting portion 20 is rotated to drive the driving screw 12 to follow the rotation, so that the inclination adjusting portion 20 operates to rotate the carrying tray 4, the included angle between the base 3 and the carrying tray 4 is continuously increased from zero, the inclination of the carrying tray 4 is further changed to adapt to different paper collection requirements, the driving source 13 connected with the inclination reinforcing portion 30 is respectively rotated to operate the plurality of inclination reinforcing portions 30, the reinforcing support and fixing are performed between the base 3 and the carrying tray 4, the change of the angle between the carrying tray 4 and the base 3 due to the increase of the paper weight after excessive paper is prevented from being collected, and stability is improved.

Still further, referring to fig. 7 to 10 again, the tilt angle observation member 40 is mounted on the surface of the rotating post 11, the tilt angle observation member 40 includes a housing 41, a connecting post 42, a spring a43 and a flexible ruler 44, the housing 41 is fixed on the outer side of the rotating post 11, the connecting post 42 is rotatably connected inside the housing 41, the spring a43 is arranged on the outer side of the connecting post 42, one end of the spring a43 is fixedly connected with the connecting post 42, the other end of the spring a43 is fixedly connected with the housing 41, the flexible ruler 44 is wound on the connecting post 42, one end of the flexible ruler 44 is fixedly connected with the connecting post 42, and the other end of the flexible ruler 44 penetrates through the housing 41 and is fixedly connected with the rotating post 11.

It should be noted that, the inside of the casing 41 and the outside that is located the spliced pole 42 are fixed with baffle 45, and baffle 45 is located between clockwork spring a43 and the flexible chi 44, separates baffle 45 and flexible chi 44, avoids flexible chi 44 to pull out or when winding, clockwork spring a43 causes the influence to flexible chi 44, promotes flexible chi 44's life.

Above-mentioned, when the inclination of the loading tray 4 is adjusted, when the inclination of the loading tray 4 is increased, rotate the driving screw 12, will make the flexible chi 44 twine on the surface of the driving screw 12, drive the spliced pole 42 and rotate, make the clockwork spring a43 twist, and produce the torsional force, through observing the data on the flexible chi 44, can learn the inclination under the current state of loading tray 4, when the inclination of the loading tray 4 is reduced, reverse rotation driving screw 12, through the torsional force of clockwork spring a43, drive the spliced pole 42 reverse rotation, make the flexible chi 44 take in the inside of shell 41, and twine the part of income in the outside of spliced pole 42, through observing the data on flexible chi 44, can learn the inclination under the current state of loading tray 4, when adjusting the inclination adjusting part 20, the flexible chi 44 data on the driving screw 12 that links to each other with inclination adjusting part 20 changes, rotate other driving screw 12, make the flexible chi 44 data on the driving screw 12 that the rest flexible chi 44 data and inclination adjusting part 20 link keep the same, thereby make inclination adjusting part 20 and reinforcement 30 on the same straight line, promote the convenience.

Still further, referring to fig. 2, 11 and 12, the fixing portion 70 includes a fixing shell 71, a fixing rod 72, a wire rope 73, a hook 74 and a unidirectional transmission member 80, the fixing shell 71 is fixed at an upper end of the supporting plate 5 on one side of the carrying disc 4, the fixing rod 72 is rotatably connected inside the fixing shell 71, the wire rope 73 is wound on an outer side of the fixing rod 72, one end of the wire rope 73 is fixedly connected with the fixing rod 72, the hook 74 is fixedly connected with one end of the wire rope 73 far away from the fixing rod 72, and the unidirectional transmission member 80 is arranged inside the fixing shell 71 and is connected with the fixing rod 72.

Above-mentioned, when base 3 is placed on collection portion 2, adjust the inclination of loading tray 4 after, carry out the refastening to backup pad 5, pulling couple 74, make wire rope 73 draw out from the inside of fixed shell 71, make couple 74 hook out the upper end of collection portion 2, support backup pad 5, when collection portion 2 control base 3 moves down in collection portion 2, the distance of fixed shell 71 and collection portion 2 upper end dwindles gradually, through one-way driving piece 80, make wire rope 73 income fixed shell 71's inside, will make wire rope 73 twine on dead lever 72, and avoid wire rope 73 to draw out from the inside of fixed shell 71 through one-way driving piece 80, and then draw backup pad 5 all the time in collection portion 2 control base 3 in collection portion 2 inside downward movement collection paper, avoid causing backup pad 5 to empty because of too much paper, promote the steadiness.

Still further, referring to fig. 11 and 12 again, the unidirectional transmission member 80 includes a protection plate 81, a ratchet gear 82, a pawl 83, a torsion spring 84, a pull rod 85 and a spring b86, wherein the protection plate 81 is fixed inside the fixing case 71 and is located at the outer side of the fixing rod 72, the ratchet gear 82 is fixed at the outer side of the fixing rod 72 and is located at one side of the protection plate 81 far away from the wire rope 73, the pawl 83 is rotationally connected with one side of the protection plate 81 near the ratchet gear 82, the pawl 83 is meshed with the ratchet gear 82, the torsion spring 84 is arranged on the pawl 83, one end of the torsion spring 84 is fixedly connected with the protection plate 81, the other end of the torsion spring 84 is fixedly connected with the pawl 83, the pull rod 85 is fixed at one side of the pawl 83 far away from the ratchet gear 82, the pull rod 85 penetrates through the fixing case 71, the spring b86 is arranged inside the fixing case 71 and is located at a position near the ratchet gear 82, one end of the spring b86 is fixedly connected with the fixing rod 72, and the other end of the spring b86 is fixedly connected with the fixing case 71.

When the hook 74 is pulled to pull the wire rope 73 out of the inside of the fixed shell 71, the pull rod 85 is pulled, so that the pull rod 85 drives the pawl 83 to be far away from the ratchet 82, and further, the limitation of the ratchet 82 is canceled, so that the limitation of the fixed rod 72 is canceled, the torsion spring 84 is twisted to generate torsion force, so that the wire rope 73 is pulled out of the inside of the fixed shell 71, simultaneously, the torsion spring b86 is twisted to generate torsion force, the hook 74 hooks the upper end of the collecting part 2, after the hook 74 is fixed, the movement of the pull rod 85 is canceled, the pawl 83 is meshed with the ratchet 82 through the torsion force of the torsion spring 84, so that the ratchet 82 rotates when the wire rope 73 is pulled out of the inside of the fixed shell 71, and when the collecting part 2 controls the base 3 to move downwards in the inside of the collecting part 2, the torsion force of the spring b86 rotates, the ratchet 82 is driven to rotate reversely, and then the pawl 83 slides on the surface of the ratchet 82, and the wire rope 73 is wound on the surface of the fixed rod 72, so that the tension of the wire rope 73 is reinforced by the supporting plate 5.

The working principle of the application is as follows: when the inclination angle of the bearing disc 4 is adjusted, the inclination angle adjusting part 20 is operated, the included angle between the bearing disc 4 and the base 3 is changed, the bearing disc 4 is in a slight inclination state, so that the papers which are subsequently conveyed out of the lithographic printing machine 1 can fall well under the influence of the gravity of the conveyor and the papers, the papers fall on the bearing disc 4 through the paper outlet end of the lithographic printing machine 1, when the driving mechanism drives the bearing disc 4 to move downwards, the auxiliary module 50 is operated, part of the papers falling on the bearing disc 4 are blown, the gap between each piece of papers is increased, the paper finishing part 60 is operated while the collecting part 2 is operated, the blown papers are finished, and are flatly collected on the bearing disc 4 so as to adapt to the transmission and stacking requirements of special papers, the mechanical stress and the friction force of the papers can be reduced, the damage and the deformation of the papers are reduced, and the uniformity of the papers during collection is improved.

The foregoing is merely a preferred embodiment of the present application and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present application, which are intended to be comprehended within the scope of the present application. Structures, devices and methods of operation not specifically described and illustrated herein are implemented by conventional means in the art unless specifically indicated and limited by the context.

Claims (4)

1. A sheet collecting device for sheet-fed offset printing, applied to a lithographic printing machine (1), characterized in that: comprising the following steps:

the collecting part (2), the collecting part (2) is arranged at the paper outlet end of the lithographic printing machine (1), the base (3) is arranged in the collecting part (2), the bearing disc (4) is arranged at the upper end of the base (3), the supporting plate (5) is arranged at the upper end of the bearing disc (4), the inclination angle adjusting part (20) is arranged between the base (3) and the bearing disc (4), and when the inclination angle adjusting part (20) operates, the inclination angles of the base (3) and the bearing disc (4) are changed;

the auxiliary module (50) is arranged in the collecting part (2), one end of the auxiliary module (50) is arranged between the bearing disc (4) and the paper outlet end of the lithographic printing machine (1), the auxiliary module (50) is used for blowing air between paper sheets, a driving mechanism used for driving the base (3) to move up and down is arranged in the collecting part (2), and when the height of the paper sheets on the bearing disc (4) reaches a threshold value, the driving mechanism operates to enable the base (3) to move down and drive the auxiliary module (50) to operate;

a paper finishing part (60), wherein the paper finishing part (60) is arranged at the inner side of the collecting part (2) and is close to the side surface of the bearing disc (4), and when the driving mechanism operates, the paper finishing part (60) is used for finishing paper on the bearing disc (4);

the driving mechanism comprises a fixed end and a movable end, the fixed end is arranged in the collecting part (2), the movable end is arranged on the fixed end, and the movable end is in sliding connection with the collecting part (2);

the auxiliary module (50) comprises a pressing plate (51), an air bag (52), a connecting pipe (53), an air blowing pipe (54) and a rubber sheet (55), wherein the pressing plate (51) is connected inside the collecting part (2) in a sliding mode, the pressing plate (51) is fixed at the lower end of the moving end, the air bag (52) is arranged inside the collecting part (2) and is located below the pressing plate (51), the connecting pipe (53) is fixed at one side of the lower end of the air bag (52), the air blowing pipe (54) is arranged at one end, far away from the pressing plate (51), of the connecting pipe (53), and the rubber sheet (55) is arranged between the air blowing pipe (54) and the connecting pipe (53);

the inside of sheet rubber (55) has seted up the cross opening, under the normality, the cross opening of sheet rubber (55) is closed condition, when sheet rubber (55) receives gas pressure for the cross opening of sheet rubber (55) is open condition.

2. The sheet collecting device for sheet offset printing of claim 1, wherein the inclination adjusting portion (20) includes a connection block a (21), an upper connection rod a (22) and a lower connection rod a (23), the connection block a (21) is internally screwed with the driving portion (10), the upper connection rod a (22) is rotatably connected at one end of the connection block a (21), one end of the upper connection rod a (22) away from the connection block a (21) is rotatably connected with the carrying tray (4), the lower connection rod a (23) is rotatably connected at one end of the connection block a (21) away from the upper connection rod a (22), and one end of the lower connection rod a (23) away from the connection block a (21) is rotatably connected with the base (3).

3. The ultra-thin sheet lithographic paper collection device according to claim 2, wherein the air-bag (52) is corrugated.

4. A sheet collecting device for special sheet offset printing according to claim 3, characterized in that the sheet finishing section (60) comprises a vibration source (61), a vibration plate (62), a reinforcing rod (63) and a tension member (64), the vibration plate (62) is arranged between the collecting section (2) and the carrying tray (4), the vibration source (61) is fixed at a side of the vibration plate (62) away from the carrying tray (4), the reinforcing rod (63) is also fixed at a side of the vibration plate (62) away from the carrying tray (4), and the reinforcing rod (63) is slidably connected with the collecting section (2), and the tension member (64) is arranged outside the reinforcing rod (63) and between the vibration plate (62) and the carrying tray (4).