CN212798802U

CN212798802U - Feeding mechanism of offset press

Info

Publication number: CN212798802U
Application number: CN202021063302.0U
Authority: CN
Inventors: 王国浩
Original assignee: Jiaxing Jianmin Trademark Printing And Weaving Co ltd
Current assignee: Jiaxing Jianmin Trademark Printing And Weaving Co ltd
Priority date: 2020-06-10
Filing date: 2020-06-10
Publication date: 2021-03-26
Anticipated expiration: 2030-06-10

Abstract

The utility model relates to the field of offset presses, in particular to a feeding mechanism of an offset press, which comprises a base, wherein a U-shaped plate is fixed on the upper surface of the base, placing parts are arranged at both ends of the U-shaped plate, each placing part comprises a first plate fixed on the outer wall of the upper end of the U-shaped plate, a second plate fixed on the upper side wall of the first plate, and a third plate fixed at one end of the first plate, which is far away from the U-shaped plate, the two second plates are symmetrically arranged, the two first plates are both positioned between the two second plates, the first plate and the second plates are vertically arranged, the distance between the two second plates is equal to the distance between the inner walls of both ends of the U-shaped plate, a material limiting part for the passage of a single corrugated board is arranged between the two second plates, a material shifting part for forwards conveying the single corrugated board is arranged below the first plate, the material shifting part is positioned between the two first plates, an auxiliary part for facilitating the conveying, the whole mechanical structure is simple, the use is convenient, and the cost is low.

Description

Feeding mechanism of offset press

Technical Field

The utility model belongs to the technical field of offset press technique and specifically relates to a feed mechanism of offset press is related to.

Background

An offset printing press is a kind of offset printing press, in which printing images are first printed on a blanket cylinder from a printing plate and then transferred to paper by the blanket cylinder.

The utility model discloses a utility model patent of publication No. CN207632160U discloses a high-efficient offset press adsorption paper feeding device, in this technical scheme, the railcar is provided with mount and interior transfer board and can the efficient transport the paper, elevating gear is according to offset press paper separator design, can be with the accurate location of paper to paper separator position, and the printing station emergence deviation can not appear, and then lead to the printing colour difference, the quality of printed matter has been guaranteed, utilize sucking disc elevating gear simultaneously, the process that makes form advancing is more compact, the unqualified phenomenon of printing quality of having avoided the manual operation improper to cause, the manpower is saved, the printing efficiency is improved.

But above patent has following defect, current packing carton is in printing process, known packing carton is mostly corrugated container board, current paper feeding mechanism relies on the sucking disc to hold the top paper, the paper that will hold again is the propelling movement forward, so, separate into one sheet with a pile of paper, but to the producer that current production situation is comparatively laggard behind, sucking disc formula paper feeding mechanism still need assemble perfect air compressor machine system in the workshop, just can ensure the normal operating of sucking disc, no matter in the manpower or on technical maintenance, cost consumption is all too high.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a feeding mechanism of offset press, has simple structure, cost effect with low costs not enough to prior art exists.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

a feeding mechanism of an offset press comprises a base arranged on a feed port of the offset press, wherein a U-shaped plate is fixed on the upper surface of one end, close to the feed port of the offset press, of the base, two ends of the U-shaped plate are vertically arranged upwards, placing pieces for stacking corrugated boards are arranged at two ends of the U-shaped plate, each placing piece comprises a first plate, a second plate and a third plate, the first plate is fixed on the outer wall of the upper end of the U-shaped plate, the second plate is fixed on the upper side wall of the first plate, the third plate is fixed at one end, far away from the U-shaped plate, of the first plate, the two second plates are symmetrically arranged, the two first plates are located between the two second plates, the first plate and the second plates are vertically arranged, the distance between the two second plates is equal to the distance between the inner walls of the two ends of the U-shaped plate, a material limiting piece for the corrugated boards to pass through is arranged between the two second plates, and a, the material stirring part is positioned between the two first plates, and the U-shaped plate is provided with an auxiliary part for facilitating conveying of the corrugated boards to a conveying belt of an offset press.

Through adopting above-mentioned technical scheme, the corrugated container board that will pile up is kept flat on the first board, make corrugated container board keep away from the one end edge laminating of U template in one side of third board towards the U template, corrugated container board subsides with between two second boards, then according to the thickness of sola corrugated container board, through material limiting piece, make corrugated container board can only convey one at every turn, through dialling the material piece, one orientation of corrugated container board that will pile up is close to the direction promotion of offset press conveyer belt, under the effect of auxiliary member, corrugated container board of being convenient for more is carried to the conveyer belt of offset press, whole mechanical structure is simple, high durability and convenient use, low in cost.

The utility model discloses further set up to: the material limiting part comprises a baffle plate arranged between two second plates, a first sliding groove which is vertically arranged and is formed in the position, close to the side wall of the baffle plate, of the second plate, a first sliding block which is fixed to the position, close to the end face of one end of the second plate, of the baffle plate, a waist-shaped hole which is vertically arranged and is formed in the outer wall of one of the second plates, and a limiting bolt which is arranged in the waist-shaped hole in a sliding mode, wherein the first sliding block vertically slides in the first sliding groove, the waist-shaped hole is communicated with the inner cavity of the first sliding groove, and the limiting bolt is in threaded connection with the.

Through adopting above-mentioned technical scheme, the corrugated board thickness has multiple specification, and according to the corrugated board thickness, the pulling baffle makes the interval between baffle and the first board upper surface equal single corrugated board thickness, when adjusting the interval between baffle and the first board, twists the spacing bolt this moment for the baffle is fixed and is difficult to vertically slide from top to bottom between two second boards, thereby has guaranteed that the cardboard of roll-off is the sola corrugated container board from baffle and first board at every turn.

The utility model discloses further set up to: the material shifting piece comprises a shifting rod which rotates on the upper surface of a base, a feeding block which slides between the two first plate side walls along the length direction of the first plates, a first rod which is fixed on the bottom surface of the feeding block and is vertically arranged, a second rod which is fixed on the outer wall of the first rod, a connecting hole which is arranged on the outer wall of the upper end of the shifting rod, a shifting block which is arranged on the upper surface of the feeding block, a fourth plate which is fixed on the upper surface of the base and is vertically arranged, a spring which is arranged between the fourth plate and the shifting rod, and a first driving piece which is arranged on the base and is used for driving the shifting rod to swing back and forth, wherein the upper surface of the feeding block is flush with the upper surface of the first plate, the first rod and the second rod are vertically arranged, the connecting hole is communicated with the upper end surface of the connecting rod, the second rod slides in the connecting hole, and the distance between the upper, the feeding block is provided with a connecting piece convenient for dismounting the shifting block, the fourth plate is positioned between the U-shaped plate and the shifting rod, one end of the spring is fixed on one side of the fourth plate, which is far away from the U-shaped plate, and the other end of the spring is fixed on the outer wall of the upper end of the shifting rod.

By adopting the technical scheme, when the corrugated boards are required to be conveyed to the conveying belt of the offset press one by one through the shifting block, the shifting rod can swing back and forth through the first driving piece at the moment, so that the feeding block can slide back and forth between the two first boards, in an initial state, the feeding block is positioned on the lower surface of one end, away from the offset press, of the first boards, one side, facing the offset press, of the shifting block is abutted against the end face, away from the offset press, of the corrugated boards, and when the feeding block slides back and forth, the shifting block pushes the corrugated boards one by one in the direction close to the conveying belt of the offset press, and the corrugated boards are conveyed into the offset press to be.

The utility model discloses further set up to: the connecting piece includes the caulking groove of seting up on the feedblock upper surface, fixes first magnet piece on the caulking groove bottom surface, fixes the second magnet piece on the shifting block bottom surface, the polarity of first magnet piece and second magnet piece is opposite.

Through adopting above-mentioned technical scheme, because corrugated board thickness specification has the multiple type, at first select corresponding kickoff piece according to the thickness of sola corrugated paper for the interval between the up end distance of kickoff piece and the feedblock surface equals sola corrugated container board's thick end, adsorbs first magnet piece through the second magnet piece, thereby makes the kickoff piece fix in the caulking groove, makes the mode of dismantling the kickoff piece simple and convenient.

The utility model discloses further set up to: the first driving piece comprises a roller rotating on the outer wall of one side of the shifting rod, a cam rotating on the upper surface of the base and a motor fixed on the base, wherein the rotating shaft of the roller is perpendicular to the shifting rod, the outer wall of the cam abuts against the wheel surface of the roller, and the rotating shaft of the motor is coaxially fixed on the rotating shaft of the cam.

By adopting the technical scheme, when the driving lever needs to be driven to swing in a reciprocating manner, the motor is of a servo type, the rotating speed of the motor can be adjusted, the initial state is realized, the outer wall of the cam which is the largest distance away from the circle center of the cam abuts against the outer wall of the roller, the spring is in a stretching state, the upper end of the driving lever is positioned at one end, away from the offset press, of the corrugated board, the driving motor rotates, the rotating shaft of the motor and the cam rotate synchronously, the outer wall of the cam abuts against the roller, the cam rotates for a circle, the driving lever does reciprocating motion once, when the spring recovers to a long time, one corrugated board is conveyed to the conveying belt of the offset press, and the driving lever reciprocates in a manner, so that the.

The utility model discloses further set up to: the auxiliary member is including rotating the first roller between U template both ends inner wall, rotating the second roller between U template both ends inner wall, setting up and be close to U template inner wall in the second roller pivot and serve the regulating part who is used for adjusting interval between first roller and the second roller, the second roller is located the top of first roller, the upper surface of first board is tangent setting with the outer wall of first roller, be provided with on the base and be used for driving first roller pivoted second driving piece.

Through adopting above-mentioned technical scheme, at first adjust the interval between two roll surfaces of first roller and second roller through the regulating part for the interval between two roll surfaces equals the thickness of sola corrugated board, when corrugated container board was sent to between the second roller of first roller near offset press's one end, make the second roller rotate through the second driving piece, thereby second roller and first roller centre gripping corrugated container board move towards the direction of offset press, be convenient for more corrugated container board is carried to the conveyer belt of offset press on.

The utility model discloses further set up to: the adjusting part comprises a second chute arranged on the inner wall, close to the rotating shaft of one end of the second roller, of the U-shaped plate, a second sliding block arranged at one end of the rotating shaft of the second roller, and a screw rod rotating in the second chute, wherein the second sliding block slides in the second chute, the second roller is rotatably connected between the two second sliding blocks, and the second sliding block is in threaded connection with the screw rod.

Through adopting above-mentioned technical scheme, when the interval between first roller and the second roller needs to be increased for when the interval between first roller and the second roller equals a corrugated board thickness, rotate two screw rods simultaneously this moment and make two second sliders vertically upwards slide simultaneously, thereby the second roller also vertically upwards moves together, until the interval between two roll surfaces of second roller and first roller equals a corrugated board thickness, the stop rotation screw rod can.

The utility model discloses further set up to: the pivot one end of first roller extends to outside the U template, the second driving piece includes that coaxial first gear, coaxial fixing of fixing in the cam pivot stretch out the outer one of U template second gear, around rolling up the hold-in range on first gear and second gear, tooth meshing on tooth and the first gear on the hold-in range, tooth meshing on the tooth and the second gear on the hold-in range.

Through adopting above-mentioned technical scheme to when the motor shaft rotated, drive first gear revolve, under the effect of hold-in range, make the second gear revolve, and then realize that second gear and first roller rotate together, when corrugated container board was sent to between the second roller of first roller near offset press's one end, second roller and first roller centre gripping corrugated container board remove towards offset press's direction, be convenient for more corrugated container board is carried to offset press's conveyer belt on.

To sum up, the utility model discloses a beneficial technological effect does: the whole machine has simple structure, convenient use and low cost; the first magnet block and the second magnet block are arranged, so that the manner of disassembling the material stirring block is simple and convenient; the corrugated board is clamped by the first roller and the second roller to move towards the direction of the offset press, so that the corrugated board is more conveniently conveyed to a conveying belt of the offset press; through setting up screw rod and second slider, be convenient for adjust the interval between first roller and the second roller, through setting up first gear, second gear and hold-in range, not only drive the cam through a motor and rotate, can drive first roller simultaneously and rotate, practice thrift manufacturing cost for the producer.

Drawings

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

FIG. 2 is an exploded view of the material confining member of the present embodiment;

FIG. 3 is a schematic view of the overall structure of the material stirring part of the present embodiment;

fig. 4 is a schematic view of the overall structure of the second driving member of the present embodiment.

Reference numerals: 1. a base; 2. a U-shaped plate; 3. placing the piece; 4. a first plate; 5. a second plate; 6. a third plate; 7. a material limiting piece; 8. material stirring parts; 9. an auxiliary member; 10. a baffle plate; 11. a first chute; 12. a first slider; 13. a waist-shaped hole; 14. a limit bolt; 15. a deflector rod; 16. a feeding block; 17. a first lever; 18. a second lever; 19. connecting holes; 20. shifting blocks; 21. a fourth plate; 22. a spring; 23. a first driving member; 24. a connecting member; 25. caulking grooves; 26. a first magnet block; 27. a second magnet block; 28. a roller; 29. a cam; 30. a motor; 31. a first roller; 32. a second roller; 33. an adjustment member; 34. a second driving member; 35. a second chute; 36. a second slider; 37. a screw; 38. a first gear; 39. a second gear; 40. and (4) a synchronous belt.

Detailed Description

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

As shown in figure 1, the feeding mechanism of the offset printing machine disclosed by the utility model comprises a base 1, the base 1 is a block-shaped plate, a U-shaped plate 2 is fixed on the upper surface of one end of the base 1 close to the offset printing machine, both ends of the U-shaped plate 2 are vertically arranged upwards, both ends of the U-shaped plate 2 are provided with placing parts 3 for stacking corrugated boards, two placing parts 3 are positioned on one side of the U-shaped plate 2 away from the offset printing machine, the placing parts 3 comprise a first plate 4, a second plate 5 and a third plate 6, the length direction of the first plate 4 is vertically arranged with the vertical direction, the second plate 5 is fixed on the side wall of the first plate 4, the two first plates 4 are positioned between the two second plates 5, the included angle between the first plate 4 and the second plate 5 is ninety degrees, the third plate 6 is vertically arranged, the lower end of the third plate 6 is fixed on the upper surface of one end of the first plate 4 away from the U2, third board 6 is perpendicular setting with first board 4, and the contained angle between third board 6 and the second board 5 is ninety degrees, and the interval between two 5 inner walls of second board equals the interval between 2 both ends inner walls of U template, when placing corrugated container board, will pile up corrugated container board and keep flat on first board 4 for corrugated container board keeps away from one end edge laminating of U template 2 in one side of third board 6 towards U template 2, corrugated container board paste with between two second boards 5.

As shown in fig. 1, a material limiting member 7 for a single corrugated board to pass through is arranged between two second boards 5, the material limiting member 7 is located between the inner walls of the two second boards 5 near one end of the U-shaped board 2, the material limiting member includes a baffle 10, a first sliding chute 11, a first sliding block 12, a waist-shaped hole 13 and a limiting bolt 14, the baffle 10 is located between the two second boards 5, the distance between the baffle 10 and the upper surface of the first board 4 is equal to the thickness of a single corrugated board, the first sliding chute 11 is arranged on the side wall of one side of the second board 5 near the baffle 10, the first sliding block 12 is fixed on the side wall of the baffle 10 facing the first sliding chute 11, the first sliding block 12 vertically slides in the first sliding chute 11, the waist-shaped hole 13 is arranged on the side of the second board 5 far from the baffle 10, the waist-shaped hole 13 is communicated with the inner cavity of the first sliding chute 11, the limiting bolt 14 vertically slides in the waist-shaped hole 13, the end of the limiting bolt 14 extending, the thickness of the corrugated board has multiple specifications, according to the thickness of the corrugated board, the baffle 10 is pulled to enable the distance between the baffle 10 and the upper surface of the first board 4 to be equal to the thickness of a single corrugated board, when the distance between the baffle 10 and the first board 4 is adjusted, the limit bolt 14 is screwed, the baffle 10 is fixed between the two second boards 5 and is difficult to vertically slide up and down, and therefore the single corrugated board is guaranteed to be a paper board which slides out from the baffle 10 and the first board 4 at each time.

As shown in fig. 3, a material stirring member 8 for conveying the corrugated cardboard single sheet towards the offset press is arranged below the first plates 4, the material stirring member 8 is positioned between the two first plates 4, the material stirring member 8 comprises a stirring rod 15, a feeding block 16, a first rod 17, a second rod 18, a connecting hole 19, a stirring block 20, a fourth plate 21, a spring 22 and a first driving member 23 arranged on the base 1 for driving the stirring rod 15 to swing back and forth, one end of the stirring rod 15 is rotatably connected to the upper surface of the base 1, the other end of the stirring rod 15 faces upwards vertically, the feeding block 16 slides between the side walls of the two first plates 4 along the length direction of the first plates 4, the upper surface of the feeding block 16 is attached to the lower surface of the corrugated cardboard, the first rod 17 is vertically fixed on the bottom surface of the feeding block 16, the first rod 17 and the second rod 18 are round rods, the second rod 18 is fixed on the outer wall of the lower end of the first rod 17, second pole 18 is perpendicular setting with first pole 17, connecting hole 19 is seted up on the upper end lateral wall of driving lever 15, connecting hole 19 communicates the upper end terminal surface of driving lever 15, second pole 18 slides in the inner chamber of connecting hole 19, shifting block 20 sets up on the upper surface of feedblock 16, shifting block 20 is located the one end that U template 2 was kept away from to first board 4, fourth board 21 is vertical setting, the lower extreme of fourth board 21 is fixed on the upper surface of base 1, fourth board 21 is located between U template 2 and driving lever 15, spring 22 sets up between fourth board 21 and driving lever 15, one side at fourth board 21 towards driving lever 15 is fixed to spring 22 one end, the other end of spring 22 is fixed on the outer wall of driving lever 15.

As shown in fig. 4, the feeding block 16 is provided with a connecting piece 24 for facilitating the detachment of the shifting block 20, the connecting piece 24 includes a caulking groove 25, a first magnet piece 26 and a second magnet piece 27, the caulking groove 25 is formed on the upper surface of the feeding block 16, the first magnet piece 26 is fixed on the bottom surface of the caulking groove 25, the second magnet piece 27 is fixed on the bottom surface of the shifting block 20, the polarity of the second magnet piece 27 is opposite to that of the first magnet piece 26, and the second magnet piece 27 is adsorbed on the first magnet piece 26.

As shown in fig. 3, the first driving member 23 includes a roller 28, a cam 29 and a motor 30, the roller 28 is rotatably connected to an outer wall of one side of the shift lever 15, the cam 29 is rotatably connected to an upper surface of the base 1, an outer wall of the cam 29 is attached to an outer wall of the roller 28, the motor 30 is fixed to the upper surface of the base 1, a rotating shaft of the motor 30 is coaxially fixed to the rotating shaft of the cam 29, when the corrugated cardboard is required to be conveyed one by one toward a conveyor belt of the offset printing machine, the motor 30 is driven to rotate, so that the rotating shaft of the motor 30 and the cam 29 rotate synchronously, the motor 30 is servo-type, the rotating speed of the motor 30 can be adjusted, the outer wall of the cam 29 abuts against the roller 28, the cam 29 rotates one turn, so that the shift lever 15 makes one reciprocating movement, when the outer wall farthest from a center of the cam 29 abuts against a wheel surface of, the spring 22 is in the stretched state, and when the spring 22 is reset, and a corrugated cardboard sheet is already conveyed to the conveyer belt of the offset printing machine, the deflector rod 15 reciprocates in such a way that the corrugated cardboard sheets are conveyed to the conveyer belt of the offset printing machine one by one.

As shown in fig. 4, an auxiliary member 9 for facilitating the corrugated cardboard to be conveyed to a conveyor belt of an offset printing machine is arranged on a U-shaped plate 2, the auxiliary member 9 includes a first roller 31, a second roller 32 and an adjusting member 33 arranged at one end of a rotating shaft of the second roller 32, which is close to the inner wall of the U-shaped plate 2, for adjusting the distance between the first roller 31 and the second roller 32, the first roller 31 and the second roller 32 are both rotatably connected between the inner walls of the two ends of the U-shaped plate 2, the second roller 32 is located above the first roller 31, the upper surface of the first plate 4 is tangentially arranged with the outer wall of the first roller 31, the adjusting member 33 includes a second chute 35, a second slider 36 and a screw 37, the second chute 35 is arranged on the inner wall of the U-shaped plate 2, which is close to the rotating shaft of the second roller 32, the second chute 35 is vertically arranged, the second slider 36 slides in the second chute 35 along the vertical direction, the screw rod 37 is connected in the second chute 35 in a rotating manner, the screw rod 37 is vertically arranged, the upper end of the screw rod 37 extends out of the U-shaped plate 2, the second sliding block 36 is in threaded connection with the screw rod 37, when the distance between the first roller 31 and the second roller 32 needs to be increased, the distance between the first roller 31 and the second roller 32 is equal to the thickness of one corrugated board, at the moment, the two screw rods 37 are simultaneously rotated to enable the two second sliding blocks 36 to vertically slide upwards at the same time, so that the second roller 32 also vertically moves upwards together, and when the distance between the two roller surfaces of the second roller 32 and the first roller 31 is equal to the thickness of one corrugated board, the screw rod 37 stops rotating.

As shown in fig. 4, a second driving member 34 for driving the first roller 31 to rotate is disposed on the base 1, the second driving member 34 includes a first gear 38, a second gear 39 and a synchronous belt 40, a rotating shaft at one end of the first roller 31 extends out of the U-shaped plate 2, the first gear 38 is coaxially fixed on a rotating shaft of the cam 29, the second gear 39 is coaxially fixed on an outer wall at one end of the first roller 31 extending out of the U-shaped plate 2, the first gear 38 and the second gear 39 are located on the same side, the synchronous belt 40 is wound around the first gear 38 and the second gear 39, teeth of the synchronous belt 40 are engaged with teeth of the first gear 38, teeth of the synchronous belt 40 are engaged with teeth of the second gear 39, so that the first gear 38 is driven to rotate while the rotating shaft of the motor 30 rotates, the second gear 39 is rotated under the action of the synchronous belt 40, and the second gear 39 is rotated together with the first roller 31, when the end of the corrugated cardboard close to the offset printing machine is sent between the second rollers 32 of the first rollers 31, the second rollers 32 and the first rollers 31 clamp the corrugated cardboard to move towards the offset printing machine, so that the corrugated cardboard is more conveniently conveyed to the conveying belt of the offset printing machine.

The implementation principle of the embodiment is as follows: firstly, the stacked corrugated boards are flatly placed on a first board 4, one end edge of the corrugated board far away from a U-shaped board 2 is attached to one side, facing the U-shaped board 2, of a third board 6, the corrugated board is attached between two second boards 5, then according to the thickness of a single corrugated board, a baffle 10 is pulled to enable the distance between the baffle 10 and the upper surface of the first board 4 to be equal to the thickness of the single corrugated board, when the distance between the baffle 10 and the first board 4 is adjusted, a limiting bolt 14 is screwed at the moment, the baffle 10 is fixed between the two second boards 5 and is difficult to vertically slide up and down, therefore, the situation that the paper board sliding out from the baffle 10 and the first board 4 at each time is a single corrugated board is ensured, then a motor 30 is started, the rotating shaft of the motor 30 and a cam 29 synchronously rotate, the outer wall of the cam 29 abuts against a roller 28, the, when the outer wall farthest from the center of the cam 29 abuts against the wheel surface of the roller 28, the shifting block 20 is located at one end of the corrugated paper far away from the offset printing machine, the spring 22 is in a stretching state, when the spring 22 is reset, one corrugated paper board is conveyed to the conveying belt of the offset printing machine, and the shifting rod 15 reciprocates in such a way, so that the corrugated paper boards are conveyed to the conveying belt of the offset printing machine one by one.

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. The utility model provides a feed mechanism of offset press, is including setting up base (1) on the offset press feed inlet, its characterized in that: the automatic paper feeding device is characterized in that a U-shaped plate (2) is fixed on the upper surface of one end, close to a feeding hole of the offset press, of the base (1), two ends of the U-shaped plate (2) are vertically arranged upwards, placing pieces (3) used for stacking corrugated boards are arranged at two ends of the U-shaped plate (2), each placing piece (3) comprises a first plate (4) fixed on the outer wall of the upper end of the U-shaped plate (2), a second plate (5) fixed on the upper side wall of the first plate (4), and a third plate (6) fixed at one end, far away from the U-shaped plate (2), of the first plate (4), the two second plates (5) are symmetrically arranged, the two first plates (4) are located between the two second plates (5), the first plates (4) and the second plates (5) are vertically arranged, and the distance between the two second plates (5) is equal to the distance between the inner walls of two ends of the U-shaped, two be provided with between second board (5) and be used for the limit material spare (7) that the single corrugated container board passes through, the below of first board (4) is provided with and is used for stirring material spare (8) with corrugated container board single-sheet forward transport, stir material spare (8) and be located between two first boards (4), be provided with on U template (2) and be used for being convenient for corrugated container board to carry auxiliary member (9) on the offset press conveyer belt.

2. The feeding mechanism of an offset printing machine according to claim 1, characterized in that: limit material spare (7) including setting up baffle (10) between two second boards (5), set up and be first spout (11) of vertical setting on baffle (10) lateral wall is close to second board (5), fix baffle (10) and be close to first slider (12) on second board (5) one end terminal surface, set up waist shape hole (13) that are vertical setting on one of them second board (5) outer wall, slide spacing bolt (14) in waist shape hole (13), first slider (12) vertical slip is in first spout (11), the inner chamber intercommunication of waist shape hole (13) and first spout (11), spacing bolt (14) threaded connection is on first slider (12).

3. The feeding mechanism of an offset printing machine according to claim 2, characterized in that: the material stirring piece (8) comprises a stirring rod (15) rotating on the upper surface of the base (1), a feeding block (16) sliding between the side walls of the two first plates (4) along the length direction of the first plates (4), a first rod (17) fixed on the bottom surface of the feeding block (16) and vertically arranged, a second rod (18) fixed on the outer wall of the first rod (17), a connecting hole (19) formed on the outer wall of the upper end of the stirring rod (15), a stirring block (20) arranged on the upper surface of the feeding block (16), a fourth plate (21) fixed on the upper surface of the base (1) and vertically arranged, a spring (22) arranged between the fourth plate (21) and the stirring rod (15), and a first driving piece (23) arranged on the base (1) and used for driving the stirring rod (15) to reciprocate, wherein the upper surface of the feeding block (16) is flush with the upper surface of the first plates (4), first pole (17) are perpendicular setting with second pole (18), connecting hole (19) intercommunication connecting rod's upper end terminal surface, second pole (18) slide in connecting hole (19), interval between the upper surface of shifting block (20) up end and feedblock (16) equals the corrugated board thickness, be provided with connecting piece (24) convenient to detach shifting block (20) on feedblock (16), fourth board (21) are located between U template (2) and driving lever (15), one side of keeping away from U template (2) in fourth board (21) is fixed to spring (22) one end, the upper end outer wall at driving lever (15) is fixed to spring (22) other end.

4. The feeding mechanism of an offset printing machine according to claim 3, characterized in that: the connecting piece (24) comprises a caulking groove (25) formed in the upper surface of the feeding block (16), a first magnet block (26) fixed on the bottom surface of the caulking groove (25), and a second magnet block (27) fixed on the bottom surface of the shifting block (20), wherein the polarities of the first magnet block and the second magnet block (27) are opposite.

5. The feeding mechanism of an offset printing machine according to claim 3, characterized in that: the first driving piece (23) comprises a roller (28) rotating on the outer wall of one side of the shifting rod (15), a cam (29) rotating on the upper surface of the base (1) and a motor (30) fixed on the base (1), wherein the rotating shaft of the roller (28) is perpendicular to the shifting rod (15), the outer wall of the cam (29) is abutted to the wheel surface of the roller (28), and the rotating shaft of the motor (30) is coaxially fixed on the rotating shaft of the cam (29).

6. The feeding mechanism of an offset printing machine according to claim 5, characterized in that: auxiliary member (9) are including rotating first roller (31) between U template (2) both ends inner wall, rotating second roller (32) between U template (2) both ends inner wall, setting up in second roller (32) pivot be close to U template (2) inner wall one and serve and be used for adjusting regulating part (33) of interval between first roller (31) and second roller (32), second roller (32) are located the top of first roller (31), the upper surface of first board (4) is tangent setting with the outer wall of first roller (31), be provided with on base (1) and be used for driving first roller (31) pivoted second driving piece (34).

7. The feeding mechanism of an offset printing machine according to claim 6, characterized in that: adjusting part (33) including set up second spout (35) on U template (2) are close to second roller (32) one end pivot inner wall, set up second slider (36) in second roller (32) pivot one end, rotate screw rod (37) in second spout (35), second slider (36) slide in second spout (35), second roller (32) rotate to be connected between two second sliders (36), second slider (36) threaded connection is on screw rod (37).

8. The feeding mechanism of an offset printing machine according to claim 7, characterized in that: the pivot one end of first roller (31) extends to outside U template (2), second driving piece (34) are including coaxial fixation first gear (38), the coaxial second gear (39), the hold-in range (40) of rolling up on first gear (38) and second gear (39) of stretching out U template (2) outer one end in first roller (31) pivot, around rolling up in first gear (38) and second gear (39), tooth meshing on tooth on hold-in range (40) and first gear (38), tooth meshing on tooth on hold-in range (40) and the second gear (39).