CN210824580U

CN210824580U - Paper feeding device for printing machine

Info

Publication number: CN210824580U
Application number: CN201921879235.7U
Authority: CN
Inventors: 卢德阳; 卢永必; 胡益联
Original assignee: Guangzhou Lichai Printing Co ltd
Current assignee: Guangzhou Lichai Printing Co ltd
Priority date: 2019-11-02
Filing date: 2019-11-02
Publication date: 2020-06-23
Anticipated expiration: 2029-11-02

Abstract

The utility model relates to a paper feeding device for a printing machine, which belongs to the technical field of printing machines and comprises a plurality of printing machine bodies, a conveying device is arranged between the adjacent printing machine bodies, two mounting plates which are opposite to each other are arranged between the adjacent printing machine bodies, the conveying device comprises a motor, a driving roller and a driven roller which are actively connected with the mounting plates and a plurality of conveying belts which are sleeved with the driving roller and the driven roller, the output shaft of the motor is coaxially connected with one end of the driving roller, one side of each mounting plate which is far away from the conveying belt is respectively fixed with a supporting plate, the upper end surface of the supporting plate is rotationally connected with a rotating shaft which is vertically arranged with the upper end surface of the supporting plate, the outer peripheral surface of the rotating shaft is coaxially connected with a gear, the upper end surface of the, by adjusting the distance between the push plate and the conveyor belt, the condition of offset of the printing paper is reduced.

Description

Paper feeding device for printing machine

Technical Field

The utility model belongs to the technical field of the printing machine technique and specifically relates to a paper feed device for printing machine is related to.

Background

Modern printing machines are generally composed of mechanisms for plate loading, inking, stamping, paper feeding, etc. In order to improve printing efficiency, an automatic paper feeding device is often adopted in the existing printing machine.

The prior paper feeding device generally conveys printing paper through a conveyor belt, so that the printing paper is transferred to a next imprinting unit for imprinting operation, however, in the actual paper feeding process of the printing paper, the conveyor belt conveys the printing paper through static friction between the conveyor belt and the printing paper, and meanwhile, the printing paper is light and thin, and the printing paper is easily deviated by external factors, such as vibration of a printer or crosswind generated by a fan in a printing factory, so that the printing of the printing paper deviates, and thus, a printing defective product appears in printing.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a not enough to prior art exists, the utility model aims to provide a paper feed device for printing machine has the advantage that reduces the printing paper and takes place the skew condition in data send process.

In order to achieve the above purpose, the utility model provides a following technical scheme:

a paper feeding device for a printing machine comprises a plurality of printing machine bodies, wherein a conveying device is arranged between every two adjacent printing machine bodies, two mounting plates which are opposite to each other and horizontally arranged are arranged between every two adjacent printing machine bodies, each conveying device comprises a motor arranged on one side of one mounting plate, a driving roller with two ends respectively rotatably connected with the adjacent mounting plates, a driven roller with two ends respectively rotatably connected with the adjacent mounting plates and arranged in parallel with the driving roller, and a plurality of conveying belts which are sleeved with the driving roller and the driven roller and arranged between the two mounting plates, the adjacent conveying belts are arranged at intervals, a motor output shaft is coaxially connected with one end of the driving roller, a supporting plate is respectively fixed on one side of each mounting plate, which is far away from the conveying belt, the upper end face of the supporting plate is rotatably connected with a rotating shaft, the axis of rotation peripheral face coaxial coupling has the gear, backup pad up end sliding connection have with gear engagement and with drive roll parallel arrangement's rack, the one end that the rack is close to the conveyer belt is provided with the parallel push pedal of conveyer belt direction of transfer, under the push pedal the terminal surface with conveyer belt up end parallel and level.

Through adopting above-mentioned technical scheme, rotate the connection pivot in the fixed backup pad in mounting panel one side of conveyer belt both sides, and through the meshing of the epaxial gear of rotation and rack, because rack and backup pad sliding connection, make and remove along length direction through rotating axis of rotation drive rack, the push pedal is fixed to the one end that is close to the conveyer belt at the rack simultaneously, and then the accessible rotates the axis of rotation and orders about the push pedal and move towards being close to or the conveyer belt direction, terminal surface and conveyer belt parallel and level under two push pedals, thereby two push pedals form the track of standard printing paper, through the distance of slowly adjusting push pedal and conveyer belt, and then slowly dwindle the offset of printing paper in the conveyer belt conveying, be favorable to reducing the condition of printing paper skew, thereby reduce the production of.

The utility model discloses further set up to: the conveyer belt below is provided with the exhaust box that a plurality of upper end is the opening setting, exhaust box one side intercommunication has the exhaust column, the one end intercommunication that the exhaust column kept away from the exhaust box has the air exhauster, be provided with the first air suction plate that the level set up in the exhaust box, first air suction plate runs through the first ventilation hole that has a plurality of evenly distributed along perpendicular to air suction plate up end direction.

Through adopting above-mentioned technical scheme, through the open drawing box intercommunication air exhauster in top, thereby carry out convulsions to the printing paper of drawing box top, thereby form the negative pressure, make the printing paper hug closely the conveyer belt, and then increase the frictional force of printing paper and conveyer belt, the conveyer belt of being convenient for is to the conveying of printing paper, simultaneously through setting up first aerofoil in the drawing box, and evenly run through first ventilation hole at first aerofoil, thereby make the terminal surface receive even suction under the printing paper, be favorable to the steady conveying of printing paper.

The utility model discloses further set up to: the utility model discloses a wind box, including first convulsions board, first ventilation hole, second convulsions board up end is provided with the second convulsions board, the second convulsions board runs through have a plurality of respectively with each first ventilation hole just to the second ventilation hole that sets up, second ventilation hole diameter equals first ventilation hole diameter, the ventilation box wherein mutual just right both sides are opened respectively and are just mutual just right logical groove, second convulsions board both sides are adjacent respectively towards leading to the groove setting, the both sides that the second convulsions board is close to each logical groove respectively fixedly connected with stretch out the stretching strap that leads to the groove setting.

Through adopting above-mentioned technical scheme, and then accessible pulling stretching strap makes second induced draft board and first induced draft board produce relative displacement, and then change first ventilation hole and the just right state in second ventilation hole, make the opening bore that first induced draft board and second induced draft board formed reduce, because the intake is fixed in the unit interval, and then make the wind pressure increase through the bore that reduces the opening, make the suction increase of induced draft case to the printing paper simultaneously, thereby increase the frictional force of printing paper and conveyer belt, thereby be convenient for the transport of printing paper, and simultaneously, because different paper thickness differ with hardness, thereby adjustable through suction, and then reduce the condition that makes the paper break away from the conveyer belt because of suction is too big, be favorable to the steady conveying of conveyer belt.

The utility model discloses further set up to: the both sides that the drawing box was equipped with logical groove are fixed with two respectively and divide the fixed block of putting logical groove both sides, are located the drawing box homonymy be provided with between the fixed block both ends and run through adjacent fixed block setting and both ends respectively with adjacent fixed block rotate the major axis of being connected, the major axis outer peripheral face has cup jointed the sleeve, stretching strap one end with sleeve outer peripheral face fixed connection, the sleeve with major axis coaxial coupling, two the one end of major axis coaxial coupling respectively has the synchronizing wheel that is located drawing box homonymy, two the hold-in range has been cup jointed between the synchronizing wheel, the hold-in range passes through friction drive with two synchronizing wheels, the one end that the synchronizing wheel was kept away from to the.

Through adopting above-mentioned technical scheme, and then the accessible rotates the knob and orders about two synchronizing wheels and rotate simultaneously, and then orders about two sleeves and carries out the rolling and release to adjacent stretching strap respectively to be favorable to the removal of second convulsions board, convenient to use person's operation has reduced the unusual condition that slides of second convulsions board simultaneously, is favorable to the normal regulation of convulsions box suction.

The utility model discloses further set up to: the drawstring width equals to the length of the through groove, and one side of the drawstring close to the top wall of the through groove is abutted to the top wall of the through groove.

Through adopting above-mentioned technical scheme, because the removal of second exhaust panel makes to lead to and forms the route between groove and the exhaust box top opening, through stretching strap and the setting of leading to the wall butt of groove for the stretching strap seals and leads to the groove setting, thereby reduces the condition that wind inhales the exhaust box from leading to groove, is favorable to the normal regulation of exhaust box suction.

The utility model discloses further set up to: the supporting plate is characterized in that a dovetail groove is formed in the upper end face of the supporting plate in parallel with the length direction of the rack, and a dovetail block in sliding connection with the dovetail groove is arranged on one side, close to the supporting plate, of the rack.

Through adopting above-mentioned technical scheme, under dovetail to the direction and the limiting displacement of forked tail piece, reduced the condition that the rack moved in-process and breaks away from the backup pad, be favorable to the normal meshing transmission of rack and gear.

The utility model discloses further set up to: each backup pad up end is fixed with two installation pieces respectively, the installation piece is close to one side vertical fixation of adjacent push pedal and is had the guide bar that runs through perpendicularly the push pedal sets up, the guide bar is kept away from the one end of adjacent installation piece and is fixed with the stopper. The cross-sectional area of the limiting block is larger than that of the guide rod.

Through adopting above-mentioned technical scheme, set up the stopper in guide bar one end, and then lead and the displacement limits the push pedal direction, and then is favorable to the push pedal to standardize the direction of movement of printing paper.

The utility model discloses further set up to: and a hand wheel is fixed at one end of the rotating shaft, which is far away from the supporting plate, and the hand wheel and the rotating shaft rotate coaxially.

Through adopting above-mentioned technical scheme for the user's accessible rotates the hand wheel and drives the axis of rotation and rotate, thereby provides the point of application of force for the user, and then the rotation of the axis of rotation of being convenient for.

To sum up, the utility model discloses following beneficial effect has:

1. the rotating shaft is rotatably connected with the supporting plate, the gear on the rotating shaft is meshed with the rack, the rack is slidably connected with the supporting plate, the push plate is fixed at one end, close to the conveying belt, of the rack, and can be driven to move towards the direction close to or towards the conveying belt by rotating the rotating shaft, so that the two push plates form a track for standardizing printing paper, the distance between the two push plates can be adjusted according to the widths of different printing paper, and meanwhile, the distance between the push plates and the conveying belt is adjusted, so that the condition of printed paper deviation is favorably reduced, and the probability of generating defective printed paper is reduced;

2. through the setting of drawing box and air exhauster, and set up first convulsions board and the second convulsions board that can slide relatively in the drawing box, set up mutual just right first ventilation hole and second wind hole respectively at first convulsions board and second convulsions board simultaneously, and pull in step at the stretching strap, and then realize first ventilation hole and the relative skew in second wind hole, thereby be favorable to changing the regulation that the bore of opening realized drawing box suction, thereby in the frictional force of increase printing paper and conveyer belt, can adjust suction according to the thickness and the hardness of different paper, be favorable to the steady transportation of printing paper.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic view of the overall structure of the conveying device of the present invention;

fig. 3 is an exploded view of the support plate and the rack of the present invention;

fig. 4 is an exploded view of the middle air-extracting box and the second air-extracting plate of the present invention;

fig. 5 is a sectional view of the middle air pumping box and the drawstring of the present invention.

Reference numerals: 1. a printer body; 11. a printing roller; 12. a drum; 2. a support; 3. mounting a plate; 31. a support plate; 311. a dovetail groove; 312. a rotating shaft; 313. a gear; 314. a hand wheel; 315. mounting blocks; 316. a guide bar; 317. a limiting block; 318. pushing the plate; 319. a rack; 3191. a dovetail block; 4. a conveying device; 41. a motor; 42. a drive roll; 43. a driven roller; 44. a conveyor belt; 5. an air extraction box; 51. a through groove; 52. a fixed block; 53. a first air draft plate; 531. a first vent hole; 54. a second air draft plate; 541. a second vent hole; 55. a long axis; 56. a synchronizing wheel; 57. a knob; 58. a synchronous belt; 59. a sleeve; 6. an exhaust fan; 61. an exhaust pipe; 7. and a draw tape.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

As shown in fig. 1, a sheet feeding apparatus for a printing press, a plurality of printing press bodies 1. A printing roller 11 and a cylinder 12 which is positioned below the printing roller 11 and is arranged in parallel with the printing roller 11 are rotatably connected to the printing machine body 1. A support 2 is arranged between adjacent printing machine bodies 1, and two mounting plates 3 which are opposite to each other and horizontally arranged are fixed at the upper end of the support 2. A conveying device 4 is arranged between the two mounting plates 3.

As shown in fig. 2, the conveying device 4 includes a motor 41 fixed on one side of one of the mounting plates 3, a driving roller 42 having two ends respectively rotatably connected to the mounting plates 3 and parallel to the printing roller 11 (shown in fig. 1), a driven roller 43 having two ends respectively rotatably connected to the mounting plates 3 and parallel to the driving roller 42, and a plurality of conveying belts 44 sleeved with the driving roller 42 and the driven roller 43 and located between the two mounting plates 3, wherein the conveying belts 44 are in friction transmission with the driving roller 42 and the driven roller 43. The conveyor belts 44 are disposed at equal intervals along the length of the drive roller 42. One end of the driving roller 42 vertically penetrates through one side of the mounting plate 3 fixed with the motor 41 and is coaxially connected with an output shaft of the motor 41.

As shown in fig. 2 and 3, a support plate 31 is fixed to one side of each mounting plate 3 away from the conveyor belt 44, the upper end surface of the support plate 31 is flush with the upper end surface of the mounting plate 3, and the support plate 31 is located in the middle of the mounting plate 3. The upper end face of the support plate 31 is rotatably connected with a rotating shaft 312 which is perpendicular to the upper end face of the support plate 31, a hand wheel 314 is fixed at one end of the rotating shaft 312 far away from the support plate 31, and the hand wheel 314 and the rotating shaft 312 rotate coaxially. A gear 313 is coaxially connected to the outer peripheral surface of the rotating shaft 312, and a rack 319 engaged with the gear 313 and arranged in parallel to the drive roller 42 is slidably connected to the upper end surface of the support plate 31. A dovetail groove 311 is formed in the upper end surface of the support plate 31 in a direction parallel to the length direction of the rack 319, and a dovetail block 3191 slidably connected with the dovetail groove 311 is fixed on one side of the rack 319 close to the support plate 31. The rack 319 is provided with a push plate 318 at an end thereof adjacent to the conveyor belt 44, the push plate 318 having a direction parallel to the conveying direction of the conveyor belt 44, and a lower end surface of the push plate 318 is flush with an upper end surface of the conveyor belt 44. Two mounting blocks 315 respectively disposed on two sides of the rack 319 are fixed on the upper end surface of the supporting plate 31, and the mounting blocks 315 are disposed on a side of the adjacent pushing plate 318 away from the conveyor belt 44. A guide rod 316 vertically penetrating the push plate 318 is vertically fixed on one side of the mounting block 315 close to the adjacent push plate 318, and a limiting block 317 in a round cake shape is fixed on one end of the guide rod 316 far away from the adjacent mounting block 315. The cross-sectional area of the stopper 317 is larger than that of the guide rod 316.

As shown in fig. 4, a plurality of air draft boxes 5 with open upper ends are arranged below the conveyor belt 44, one side of each air draft box 5 is communicated with an air draft tube 61, and one end of each air draft tube 61, which is far away from the air draft box 5, is communicated with an exhaust fan 6. A first air draft plate 53 horizontally arranged is fixed in the air draft box 5, and a plurality of first air vents 531 uniformly distributed on the upper end surface of the first air draft plate 53 penetrate through the first air draft plate 53 along the direction perpendicular to the upper end surface of the first air draft plate 53. Second air draft plate 54 has been placed to first air draft plate 53 up end, and second air draft plate 54 runs through to have a plurality of respectively with each first ventilation hole 531 just to the second ventilation hole 541 who sets up, second ventilation hole 541 diameter equals first ventilation hole 531 diameter. Two opposite sides of the air pumping box 5 are respectively provided with a through groove 51 opposite to each other, and the lower bottom wall of the through groove 51 is flush with the upper end surface of the first air pumping plate 53. Both sides of the second pumping plate 54 are respectively disposed toward the adjacent through grooves 51.

As shown in fig. 5, the second suction plate 54 is fixedly connected with the pull straps 7 respectively disposed to extend out of the through grooves 51 near both sides of each through groove 51. Two fixing blocks 52 which are respectively arranged at two sides of the through groove 51 are respectively fixed at two sides of the air pumping box 5, a long shaft 55 with two ends vertically penetrating through the adjacent fixing blocks 52 and two ends respectively rotatably connected with the adjacent fixing blocks 52 is arranged between the fixing blocks 52 which are positioned at the same side of the air pumping box 5, a sleeve 59 is sleeved on the outer peripheral surface of the long shaft 55, the sleeve 59 is coaxially connected with the long shaft 55, and one end of the pull belt 7 is fixedly connected with the outer peripheral surface of the sleeve 59 and is wound on the outer peripheral surface of. The width of the pull belt 7 is equal to the length of the through groove 51, and one side of the pull belt 7 close to the top wall of the through groove 51 is abutted against the top wall of the through groove 51. One end of each long shaft 55 is coaxially connected with a synchronous wheel 56 positioned on the same side of the air pumping box 5, a synchronous belt 58 is sleeved between the two synchronous wheels 56, the synchronous belt 58 and the two synchronous wheels 56 are in friction transmission, and a knob 57 is fixed at one end of each long shaft 55 far away from the corresponding synchronous wheel 56.

The working conditions and principles of the embodiment are as follows:

when the paper feeding operation is performed on the printing paper, the motor 41 is started to drive the friction transmission between the conveyor belt 44 and the drive roller 42 and the driven roller 43, the conveyor belt 44 is driven to convey the printing paper printed by the printing machine body 1, the hand wheel 314 is rotated, the drive rotating shaft 312 drives the gear 313 to rotate, and the rack 319 is driven to move along the extending direction of the dovetail groove 311, so that the push plate 318 is driven to align the printing paper on the conveyor belt 44, the distance between the push plate 318 and the conveyor belt 44 is adjusted and controlled according to the width of the printing paper, the offset of the printing paper is favorably reduced, and the probability of generating defective printing paper is reduced.

When conveyer belt 44 conveys printing paper, open air exhauster 6, air exhauster 6 induced drafts printing paper through opening towards air extracting box 5 of conveyer belt 44, and according to the printing paper thickness condition, rotate knob 57 through rotating, order about major axis 55 to rotate, under the friction drive of hold-in range 58 and two synchronizing wheels 56, realize synchronizing wheel 56's synchronous revolution, and then order about stretching strap 7 and pull second ventilation hole 541, thereby the realization is adjusted the opening bore that forms between first ventilation hole 531 and the second ventilation hole 541, make printing paper receive even suction, suction is adjustable simultaneously, be favorable to the steady conveying of the printing paper of different thickness.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. A paper advance device for printing machine, includes a plurality of printing machine bodies (1), and is adjacent be provided with conveyer (4), characterized by between printing machine body (1): two mounting plates (3) which are opposite to each other and horizontally arranged are arranged between adjacent printing machine bodies (1), the conveying device (4) comprises a motor (41) arranged on one side of one mounting plate (3), a driving roller (42) with two ends respectively rotatably connected with the adjacent mounting plates (3), a driven roller (43) with two ends respectively rotatably connected with the adjacent mounting plates (3) and parallel to the driving roller (42), and a plurality of conveying belts (44) which are sleeved with the driving roller (42) and the driven roller (43) and positioned between the two mounting plates (3), the adjacent conveying belts (44) are arranged at intervals, an output shaft of the motor (41) is coaxially connected with one end of the driving roller (42), a supporting plate (31) is respectively fixed on one side of each mounting plate (3) deviating from the conveying belt (44), a rotating shaft (312) which is perpendicular to the upper end surface of the supporting plate (31) is rotatably connected with the upper end surface of the supporting plate (31), the axis of rotation (312) outer peripheral face coaxial coupling has gear (313), backup pad (31) up end sliding connection have with gear (313) meshing and with drive roll (42) parallel arrangement's rack (319), the one end that rack (319) are close to conveyer belt (44) is provided with parallel push pedal (318) of conveyer belt (44) direction of transfer, under push pedal (318) terminal surface with conveyer belt (44) up end parallel and level.

2. A sheet feeding device for a printing press according to claim 1, wherein: conveyer belt (44) below is provided with suction box (5) that a plurality of upper end is the opening and sets up, suction box (5) one side intercommunication has exhaust column (61), the one end intercommunication that suction box (5) were kept away from in exhaust column (61) has air exhauster (6), be provided with first suction plate (53) that the level set up in suction box (5), first suction plate (53) are followed first suction plate of perpendicular to (53) up end direction and are run through first ventilation hole (531) that have a plurality of evenly distributed.

3. A sheet feeding device for a printing press according to claim 2, wherein: first induced draft board (53) up end is provided with second induced draft board (54), second induced draft board (54) run through have a plurality of respectively with each first ventilation hole (531) just to second ventilation hole (541) of setting, second ventilation hole (541) diameter equals first ventilation hole (531) diameter, induced draft case (5) wherein each other just to both sides open respectively to have mutual just right logical groove (51), second induced draft board (54) both sides are adjacent respectively towards leading to groove (51) setting, second induced draft board (54) are close to the both sides respectively fixedly connected with of each leading to groove (51) and stretch out stretching strap (7) that lead to groove (51) setting.

4. A sheet feeding device for a printing press according to claim 3, wherein: two fixing blocks (52) which are respectively arranged at two sides of the through groove (51) arranged on the air pumping box (5), two fixing blocks (52) which are respectively arranged at two sides of the through groove (51), a long shaft (55) which is arranged by penetrating through the adjacent fixing blocks (52) at two ends and is respectively connected with the adjacent fixing blocks (52) at two ends is arranged between the fixing blocks (52) which are positioned at the same side of the air pumping box (5), a sleeve (59) is sleeved on the outer peripheral surface of the long shaft (55), one end of the pull belt (7) is fixedly connected with the outer peripheral surface of the sleeve (59), the sleeve (59) is coaxially connected with the long shafts (55), one end of each of the two long shafts (55) is respectively and coaxially connected with a synchronous wheel (56) positioned at the same side of the air pumping box (5), a synchronous belt (58) is sleeved between the two synchronous wheels (56), the synchronous belt (58) and the two synchronous wheels (56) are in friction transmission, and a knob (57) is fixed at one end, far away from the synchronous wheels (56), of the long shaft (55).

5. A sheet feeding device for a printing press according to claim 3, wherein: the width of the pull belt (7) is equal to the length of the through groove (51), and one side, close to the top wall of the through groove (51), of the pull belt (7) is abutted to the top wall of the through groove (51).

6. A sheet feeding device for a printing press according to claim 1, wherein: the supporting plate is characterized in that a dovetail groove (311) is formed in the upper end face of the supporting plate (31) in the length direction parallel to the rack (319), and a dovetail block (3191) in sliding connection with the dovetail groove (311) is arranged on one side, close to the supporting plate (31), of the rack (319).

7. A sheet feeding device for a printing press according to claim 1, wherein: two mounting blocks (315) are respectively fixed on the upper end face of each supporting plate (31), a guide rod (316) vertically penetrating through the push plate (318) is vertically fixed on one side of each mounting block (315) close to the adjacent push plate (318), a limiting block (317) is fixed on one end of each guide rod (316) far away from the adjacent mounting block (315), and the cross section area of each limiting block (317) is larger than that of each guide rod (316).

8. A sheet feeding device for a printing press according to claim 1, wherein: a hand wheel (314) is fixed at one end, far away from the support plate (31), of the rotating shaft (312), and the hand wheel (314) and the rotating shaft (312) rotate coaxially.