CN211366335U

CN211366335U - Paper feeding device for printing machine

Info

Publication number: CN211366335U
Application number: CN201922250820.7U
Authority: CN
Inventors: 浠绘椽; 任洪
Original assignee: Shanghai Shifeng Printing Co ltd
Current assignee: Shanghai Shifeng Printing Co ltd
Priority date: 2019-12-14
Filing date: 2019-12-14
Publication date: 2020-08-28
Anticipated expiration: 2029-12-14

Abstract

The utility model relates to a paper loading attachment for printing machine, including setting up at the support of printing machine feed inlet department, the loading board that is used for placing the paper, but loading board vertical lift sets up in the support, is provided with the locating component of material loading subassembly and be used for arranging the paper on the support. The feeding assembly comprises a flat car, a paper placing plate and clamping pieces symmetrically arranged at two ends of the loading plate, a first guide rail for the flat car to move is arranged on one side of the loading plate, a second guide rail in butt joint with the first guide rail is arranged on the loading plate, and the paper placing plate is placed on the flat car. The clamping piece comprises two connecting plates, a plurality of cylinders and a lifting plate, the connecting plates are respectively and fixedly connected to supports at two ends of the bearing plate, the cylinders are respectively and fixedly connected to two ends of the connecting plate along the length direction of the connecting plate, and piston rods of the cylinders penetrate through the connecting plates and then are in transmission connection with the lifting plate. After the flat car with the paper placing plate moves to the second guide rail, the cylinder is driven, and the lifting plate drives the paper placing plate to be separated from the flat car.

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 loading attachment for printing machine is related to.

Background

Printing is a technique of transferring ink to the surface of a material such as paper, fabric, or leather by plate making, inking, and pressing original documents such as characters, pictures, and photographs, and thereby mass-transferring the contents of the original documents. In a conventional paper printing process, a printing machine is often used to print on the surface of paper, and the printing machine is generally composed of a paper feeding device, a positioning transfer device printing device and a paper receiving device.

In the prior art, as chinese patent with publication number CN208790773U, it discloses a loading attachment of a printing press, and its technical scheme main points include the plummer that is used for bearing the weight of the paper that locates printing press pan feeding mouth department, are close to the backing plate that the plummer set up locates the symmetrical riser in backing plate both sides. The paper conveying device comprises a bearing plate, a lifting assembly and a conveying assembly, wherein the bearing plate is connected between vertical plates in a sliding mode along the vertical direction and used for bearing paper, the lifting assembly is arranged on a base plate and used for driving the bearing plate to lift, and the conveying assembly is used for conveying the paper and conveying the paper to a preset position of a bearing table. The bearing plate is characterized in that a sliding block is connected with the bearing surface of the base plate in a sliding mode, a connecting plate is arranged between the sliding block and the bearing plate, one end of the connecting plate is hinged to the sliding block, the other end of the connecting plate is hinged to the bottom end face of the bearing plate, and a first air cylinder used for driving the sliding block to slide is arranged on the base plate.

The above prior art solutions have the following drawbacks: when the feeding device is used, paper can be automatically conveyed into the printing machine instead of manual operation. However, when the paper is conveyed, the paper needs to be orderly stacked on the bearing plate in advance, and the bearing plate is difficult to disassemble and place a large amount of paper because the bottom end face of the bearing plate is hinged with the connecting plate. In general, a large number of sheets can only be manually transported several times and then stacked on the carrier plate. The process of feeding paper to the bearing plate wastes time and labor, and after the paper is stacked by workers, the paper is difficult to stack neatly due to the dead weight of the paper when the position of the paper is adjusted.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, one of the purposes of the utility model is to provide a need not artifical material loading, improve work efficiency, and can neatly stack the paper loading attachment that is used for the printing machine of paper.

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

a paper feeding device for a printing machine comprises a support arranged at a feeding port of the printing machine and a bearing plate used for placing paper, wherein the bearing plate can be vertically arranged in the support in a lifting manner, and a feeding assembly and a positioning assembly used for arranging the paper are arranged on the support;

the feeding assembly comprises a flat car, a paper placing plate and clamping pieces symmetrically arranged at two ends of the bearing plate, a first guide rail for the flat car to move is arranged on one side of the bearing plate, a second guide rail butted with the first guide rail is arranged on the bearing plate, and the paper placing plate is placed on the flat car;

the clamping piece comprises two connecting plates, a plurality of cylinders and a lifting plate, the connecting plates are respectively and fixedly connected to the supports at the two ends of the bearing plate, the cylinders are respectively and fixedly connected to the two ends of the connecting plate along the length direction of the connecting plate, and piston rods of the cylinders penetrate through the connecting plates and are in transmission connection with the lifting plate;

after the flat car with the paper placing plate moves to the second guide rail, the cylinder is driven, and the lifting plate drives the paper placing plate to be separated from the flat car.

Through above-mentioned technical scheme, before using the printing machine to print the paper, stack a large amount of papers on the board of putting on the flatbed earlier. The loading plate is adjusted to the position where the first guide rail is in butt joint with the second guide rail, then the flat car is pushed to move on the first guide rail, and when the flat car is close to the bracket, the positioning assembly is adjusted to enable the paper sheets to be stacked together neatly. When the flat car moves onto the second guide rail, the height of the loading plate is adjusted so that the paper placing plate is slightly higher than the lifting plate. The cylinder is driven to drive the piston rod to drive the lifting plates to approach each other, the lifting plates partially support the paper placing plate while approaching each other, the paper placing plate is slightly lifted by a certain height, and the paper placing plate is separated from the flat car. And then the flat car is moved to the first guide rail from the second guide rail on the bearing plate, after the bearing plate is adjusted to be lifted to the position abutted to the paper placing plate, the piston rod of the adjusting cylinder drives the lifting plate to be away from each other, the paper placing plate is stably placed on the bearing plate, and then the height of the bearing plate is adjusted to print paper. In the process, the paper placing plate for placing a large amount of paper is conveyed to the bearing plate through the flat car, on one hand, manual feeding is not needed, so that the paper placing plate can be stably fixed on the bearing plate, and the printing of the paper is facilitated; on the other hand, the position of the paper is adjusted through the positioning assembly before printing, so that the paper can be stacked neatly, and the problem of low efficiency of the paper in the feeding process is effectively solved.

The present invention may be further configured in a preferred embodiment as: the lifting plate comprises a clamping plate and a supporting plate, the supporting plate is vertically and fixedly connected to the clamping plate, one surface of the supporting plate is far away from the clamping plate and is fixedly connected with one end of a piston rod of the air cylinder, and the supporting plate is provided with a lifting arc surface facing the paper placing plate.

Through above-mentioned technical scheme, adjust the loading board and make the bottom surface of putting the cardboard slightly be higher than the backup pad, drive actuating cylinder and make its piston rod drive the grip block and be close to each other, the backup pad is slowly close to and puts the cardboard after, the one end of cardboard bottom surface is put to the lifting cambered surface butt simultaneously. The two ends of the bottom surface of the paper placing plate are separated from the flat car under the action that the lifting arc surfaces are close to each other, and the paper placing plate is fixed on the two supporting plates, so that the flat car can be pushed out of the bearing plate. The position of putting the cardboard in the backup pad has been restricted on the one hand to the grip block, and on the other hand makes the lateral wall of putting cardboard and grip block support each other tightly along with the effect of cylinder, has further increased the stability of putting the cardboard in the backup pad. After the flatbed is pushed out, the loading board is adjusted in height to enable the loading board to be abutted to the bottom surface of the paper placing board, the driving cylinder is driven to enable the piston rod of the driving cylinder to drive the clamping plate to be away from each other, the paper placing board is separated from the supporting plate, and the loading board is stably placed on the loading board, so that printing of paper on the next step is facilitated. In the process, the paper placing plate with a large amount of paper can be stably placed on the bearing plate, printing is facilitated, manual carrying of the paper placing plate is not needed, and manpower is saved. Meanwhile, the flat car can be taken down, so that the stability of paper printing is improved, the paper placing plate with paper can be placed on the flat car conveniently, and the efficiency of feeding the paper before printing is effectively improved.

The present invention may be further configured in a preferred embodiment as: put the cardboard and be close to the border department at the both ends of the one side of flatbed is provided with the pulley respectively, offer the confession on the lifting cambered surface pulley pivoted spout, put the cardboard and keep away from the one side of paper seted up a plurality of with second guide rail assorted recess.

Through above-mentioned technical scheme, be close to each other and mutually support with putting the cardboard at the lifting cambered surface to make this in-process that puts the cardboard and rise, the pulley is at the spout internal rotation. Sliding friction of the paper placing plate and the lifting arc surface is converted into rolling friction of the pulley and the sliding groove, so that the friction force of contact between the paper placing plate and the sliding groove is reduced to a great extent, and the paper placing plate can be lifted by a certain height more quickly and stably and is placed between the supporting plates stably. After the flat car is pushed out of the bearing plate, the height of the bearing plate is adjusted to enable the bearing plate to be abutted against the paper placing plate. Drive actuating cylinder and make the both ends of putting the cardboard break away from the backup pad, put the cardboard and place on the loading board. The second guide rail inlays to be established in the recess for it is difficult for moving about to put the cardboard, has further increased the stability of putting the cardboard on the loading board, is convenient for print the paper of putting on the cardboard, the effectual lower problem of paper at material loading in-process efficiency that has solved.

The present invention may be further configured in a preferred embodiment as: the positioning assembly comprises a sliding rod, a plurality of sliding plates and limiting plates, the two ends of the sliding rod in the length direction of the sliding rod are fixed above one side, close to the first guide rail, of the support, the sliding plates are arranged on the sliding rod in a sliding mode respectively, and the limiting plates are vertically and fixedly connected to the surfaces, close to each other, of the sliding plates respectively.

Through the technical scheme, when the flat car is moved to the position, close to the support, of the first guide rail, the sliding plate is driven to move on the sliding rod, so that the limiting plates are close to each other and abut against the side walls of a large number of stacked paper. The paper is neatly stacked together under the effect of limiting plate thrust, is convenient for follow-up printing to the paper, the effectual efficiency that has improved the paper material loading before the printing.

The present invention may be further configured in a preferred embodiment as: slide sleeve is equipped with survey buret on the slide bar, be provided with the bolt on surveying the lateral wall of buret, the one end of bolt is passed the sliding plate with survey buret threaded connection, be close to on the support the one side fixedly connected with scale of slide bar, survey the one side that buret is close to each other respectively with the one side that the limiting plate is close to each other is in on the coplanar.

Through the technical scheme, when the data of paper is not required to be measured, the sliding plate is driven to enable the sliding plate to be away from each other, and when the measuring pipe slides to the two ends on the sliding rod, the screw bolt is screwed to enable one end of the bolt to penetrate through the side wall of the measuring pipe and the side wall of the sliding rod to be abutted tightly, so that the sliding plate is not prone to moving on the sliding rod. When the data of the sheets are to be measured, the slide plates are driven so that the stopper plates are brought close to each other and abut against the side walls of a large number of stacked sheets, respectively. By observing the position of the end of the two measuring tubes close to each other on the graduated scale, the data about the size of the paper can be accurately obtained.

The present invention may be further configured in a preferred embodiment as: the end, far away from the survey buret, of the sliding plate slides and is provided with a lifting plate, the side wall of the sliding plate is provided with a fastener, the end, far away from the sliding plate, of the lifting plate is provided with a limiting guide rail, and the end, far away from the survey buret, of the sliding plate is higher than the paper placing plate on the flat car.

Through the technical scheme, the lifting plate is adjusted to enable one end of the lifting plate to be embedded in the limiting guide rail, the lifting plate is fixed on the sliding plate through adjusting the fastener, and the stability of the sliding plate in moving left and right is improved. When the size of the paper is measured when the area of the paper is smaller than that of the paper placing plate on the flat car, the lifting plate is adjusted to be contracted in the sliding plate. The lifting plate is fixed through the fastener, and then the sliding plate can be driven, so that the limiting plates on the sliding plate can be abutted against the side walls of a large number of stacked paper, and the paper size can be conveniently measured.

The present invention may be further configured in a preferred embodiment as: the lifting assembly is arranged on the support and comprises two motors, two rotating shafts and four steel wire ropes, the two motors are respectively fixed on the support, the two ends of each rotating shaft along the length direction of the rotating shaft are rotatably connected to the support, and the rotating shafts are in coaxial transmission connection with output shafts of the motors;

and two rolling turnplates are coaxially and fixedly connected to each rotating shaft respectively, one ends of the four steel wire ropes are wound on the rolling turnplates after being fixed with the rolling turnplates, and the other ends of the four steel wire ropes are fixedly connected with four corners of the bearing plate.

Through above-mentioned technical scheme, two motors of simultaneous drive make the output shaft of motor drive the axis of rotation and rotate simultaneously, and the epaxial rolling carousel of axis of rotation rotates and makes wire rope realize the rolling and release on the rolling carousel. When the rotating shaft rotates, the four steel wire ropes are wound on the winding disc at the same time, so that the bearing plate is lifted in the vertical direction, and printing on paper is facilitated. When the rotating shaft rotates in the opposite direction, the four steel wire ropes are released simultaneously, the bearing plate descends in the vertical direction, and the four steel wire ropes are fixed at the four corners of the bearing plate respectively, so that the lifting stability of the bearing plate is improved.

The present invention may be further configured in a preferred embodiment as: put the cardboard and keep away from one side integrated into one piece fixedly connected with a plurality of bracing pieces of recess, the area of putting the cardboard is greater than the area of flatbed.

Through above-mentioned technical scheme, the paper that the volume of stack needs to be printed on the bracing piece, the gap that forms between the bracing piece is convenient for adjust the position of paper on putting the cardboard. Because the border department at putting cardboard bottom surface both ends is provided with the pulley, the area of putting the cardboard is greater than the area of flatbed makes on the one hand putting the cardboard can be stable place on the flatbed, and on the other hand makes the effect that the board that lifts can realize lifting and support to putting the cardboard on the flatbed.

To sum up, the utility model discloses a following at least one useful technological effect:

1. the paper placing plates for placing a large amount of paper are conveyed to the bearing plate through the flat car, on one hand, manual feeding is not needed, so that the paper placing plates can be stably fixed on the bearing plate, and printing of the paper is facilitated; on the other hand, the position of the paper is adjusted through the positioning assembly before printing, so that the paper can be stacked neatly, and the problem of low efficiency of the paper in the feeding process is effectively solved.

2. The pulley rotates in the chute during the process that the lifting cambered surfaces are close to each other and are matched with the paper placing plate, and the paper placing plate is lifted. Sliding friction of the paper placing plate and the lifting arc surface is converted into rolling friction of the pulley and the sliding groove, so that the friction force of contact between the paper placing plate and the sliding groove is reduced to a great extent, and the paper placing plate can be lifted by a certain height more quickly and stably and is placed between the supporting plates stably. After the flat car is pushed out of the bearing plate, the height of the bearing plate is adjusted to enable the bearing plate to be abutted against the paper placing plate. Drive actuating cylinder and make the both ends of putting the cardboard break away from the backup pad, put the cardboard and place on the loading board. The second guide rail is embedded in the groove, so that the paper placing plate is not easy to move left and right, the stability of the paper placing plate on the bearing plate is further improved, paper placed on the paper placing plate is convenient to print, and the feeding efficiency of the paper before printing is effectively improved.

3. When the data of paper need not be measured, the drive sliding plate makes the sliding plate keep away from each other to when sliding to survey buret and being located the both ends on the slide bar, revolve to twist the bolt and make the one end of bolt pass survey buret and the lateral wall of slide bar support tightly, make the sliding plate be difficult for removing on the slide bar. When the data of the sheets are to be measured, the slide plates are driven so that the stopper plates are brought close to each other and abut against the side walls of a large number of stacked sheets, respectively. By observing the position of the end of the two measuring tubes close to each other on the graduated scale, the data about the size of the paper can be accurately obtained.

Drawings

Fig. 1 is a top view of the present invention (a portion of the bracket is omitted).

Fig. 2 is a schematic view of the overall structure of the present invention.

Fig. 3 is a partially enlarged schematic view of a portion a in fig. 2.

Fig. 4 is a partially enlarged view of a portion B in fig. 2.

Reference numerals: 1. a support; 11. a graduated scale; 2. a carrier plate; 21. a first guide rail; 22. a second guide rail; 3. a feeding assembly; 31. flatbed vehicle; 32. placing a paper board; 321. a pulley; 322. a groove; 323. a support bar; 33. a clamping member; 331. a connecting plate; 332. a cylinder; 333. lifting the plate; 3331. a clamping plate; 3332. a support plate; 3333. lifting the arc surface; 3334. a chute; 4. a positioning assembly; 41. a slide bar; 411. a measurement tube; 412. a bolt; 42. a sliding plate; 421. a lifting plate; 422. a fastener; 423. limiting a guide rail; 43. a limiting plate; 5. a lifting assembly; 51. a motor; 52. a rotating shaft; 521. rolling a turntable; 53. a steel cord.

Detailed Description

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

Referring to fig. 1, for the utility model discloses a paper loading attachment for printing machine, including setting up at support 1 of printing machine feed inlet department and the loading board 2 that is used for placing the paper, support 1 includes the platform and four support columns of a cuboid form, and the one end fixed connection of four support columns is in four edges of platform one side, and the other end is fixed subaerial. Be provided with lifting unit 5 in the support 1, lifting unit 5 is used for driving loading board 2 oscilaltion in support 1, is provided with material loading subassembly 3 and the locating component 4 that is used for putting in order the paper on the support 1.

Referring to fig. 1, the feeding assembly 3 includes a flat car 31, a paper placing plate 32, and clamping members 33 symmetrically disposed at both ends of the loading plate 2, two first guide rails 21 for the flat car 31 to move are fixedly connected to the ground at one side of the loading plate 2, and a second guide rail 22 butted against the first guide rails 21 is fixedly connected to the loading plate 2. The paper placing plate 32 is placed on the flat car 31, two grooves 322 matched with the second guide rails 22 are formed in the bottom surface of the paper placing plate 32, ten supporting rods 323 which are parallel to each other are fixedly connected to one surface, far away from the grooves 322, of the paper placing plate 32 in an integrated forming mode, and the area of the paper placing plate 32 is larger than that of the flat car 31. In the present embodiment, the paper placing plate 32 is preferably made of a wood material, which can reduce the weight of the paper placing plate 32 and facilitate the processing and forming.

Referring to fig. 2, the clamping member 33 includes two connecting plates 331, four cylinders 332, and two lifting plates 333, wherein the two connecting plates 331 are respectively and fixedly connected to the brackets 1 at the two ends of the bearing plate 2, and the two cylinders 332 are respectively and fixedly connected to the outer sidewalls of the two ends of the connecting plates 331 along the length direction thereof. The piston rod of the air cylinder 332 penetrates through the connecting plate 331 and is in transmission connection with the lifting plate 333, after the flat car 31 with the paper placing plate 32 moves onto the second guide rail 22, the air cylinder 332 is driven, and the lifting plate 333 drives the paper placing plate 32 to separate from the flat car 31.

Further, referring to fig. 3, the lifting plate 333 includes a clamping plate 3331 and a supporting plate 3332, the supporting plate 3332 is vertically and fixedly connected to the clamping plate 3331, a surface of the clamping plate 3331 away from the supporting plate 3332 is fixedly connected to one end of the piston rod of the cylinder 332, and the supporting plate 3332 is provided with a lifting arc surface 3333 facing the paper placing plate 32. The bearing plate 2 is adjusted to make the bottom surface of the paper placing plate 32 slightly higher than the supporting plate 3332, the driving cylinder 332 drives the piston rod to drive the clamping plate 3331 to approach each other, and meanwhile, after the supporting plate 3332 slowly approaches the paper placing plate 32, the lifting arc surface 3333 abuts against one end of the bottom surface of the paper placing plate 32. The two ends of the bottom surface of the paper discharge plate 32 are separated from the flat car 31 by the lifting arc 3333 approaching each other and fixed to the two support plates 3332 so that the flat car 31 can be pushed out from the loading plate 2.

In this embodiment, the clamping plate 3331 limits the position of the paper placing plate 32 on the supporting plate 3332, and further increases the stability of the paper placing plate 32 on the supporting plate 3332 as the air cylinder 332 makes the side walls of the paper placing plate 32 and the clamping plate 3331 abut against each other. After pushing out flatbed 31, adjust the height of loading board 2 and make its bottom surface with putting the cardboard 32 butt, drive actuating cylinder 332 and make its piston rod drive grip block 3331 keep away from each other, put cardboard 32 and break away from backup pad 3332, stable placing is on loading board 2, the printing of the next step paper of being convenient for. In the process, the paper placing plate 32 with a large amount of paper can be stably placed on the bearing plate 2, printing is facilitated, manual carrying of the paper placing plate 32 is not needed, and manpower is saved. Meanwhile, the flat car 31 can be taken down, so that the stability of paper printing is improved, and the paper placing plate 32 with paper can be conveniently placed on the flat car 31.

Referring to fig. 4, pulleys 321 are rotatably connected to edges of two ends of one side of the paper feeding plate 32 close to the flat car 31, and referring to fig. 2, a sliding groove 3334 for the pulleys 321 to rotate is formed on the lifting arc surface 3333. During the process that the lifting arc surfaces 3333 approach each other and cooperate with the paper placing plate 32 and lift the paper placing plate 32, the pulley 321 rotates in the sliding groove 3334. The sliding friction between the paper placing plate 32 and the lifting cambered surface 3333 is converted into the rolling friction between the pulley 321 and the sliding groove 3334, so that the friction force of the contact between the paper placing plate 32 and the sliding groove 3334 is reduced to a great extent, and the paper placing plate 32 can be lifted to a certain height more quickly and stably and is stably placed between the supporting plates 3332. When the flat car 31 is pushed out from the loading plate 2, the height of the loading plate 2 is adjusted to abut against the paper placing plate 32. The air cylinder 332 is driven so that both ends of the paper discharging plate 32 are separated from the support plates 3332, and the paper discharging plate 32 is placed on the loading plate 2.

In practice, a large amount of paper to be printed is stacked on the supporting bars 323, and the gap formed between the supporting bars 323 facilitates the adjustment of the position of the paper on the paper feeding plate 32. Since the pulleys 321 are disposed at the edges of the two ends of the bottom surface of the paper discharging plate 32, the area of the paper discharging plate 32 is larger than that of the flat car 31, so that the paper discharging plate 32 can be stably placed on the flat car 31 on one hand, and the lifting plate 333 can lift and support the paper discharging plate 32 on the flat car 31 on the other hand. The second guide rail 22 is embedded in the groove 322, so that the paper placing plate 32 is not easy to move left and right, the stability of the paper placing plate 32 on the bearing plate 2 is further increased, and printing on paper on the paper placing plate 32 is facilitated.

Referring to fig. 1, the positioning assembly 4 includes a sliding rod 41, two sliding plates 42 in a rectangular parallelepiped shape, and two limiting plates 43, two ends of the sliding rod 41 along a length direction thereof are fixed above one side of the bracket 1 close to the first guide rail 21, the two sliding plates 42 are respectively and symmetrically slidably disposed on the sliding rod 41, and the two limiting plates 43 are respectively and vertically and fixedly connected to one side of the sliding plates 42 close to each other. When the carriage 31 is moved to a position where the first guide rail 21 is close to the frame 1, the slide bar 42 is driven to move on the slide bar 41 so that the stopper plates 43 are close to each other and abut against the side walls of a large number of stacked sheets. The paper sheets are orderly stacked together under the thrust of the limiting plate 43, so that the subsequent printing on the paper sheets is facilitated.

Further, referring to fig. 1, a measuring tube 411 is slidably sleeved on the sliding rod 41, a bolt 412 is disposed on a side wall of the measuring tube 411, and an end of the bolt 412, which is far away from the head, penetrates through the sliding plate 42 to be in threaded connection with the measuring tube 411, and then can be abutted against the sliding rod 41. The side of the bracket 1 close to the sliding rod is fixedly connected with a graduated scale 11, and the side of the measuring tube 411 close to each other is respectively on the same plane with the side of the limiting plate 43 close to each other. When the data of the sheet is not required to be measured, the sliding plates 42 are driven so that the sliding plates 42 are away from each other, and when the measuring pipe 411 is slid to both ends on the slide bar 41, the bolts 412 are screwed so that one end of the bolt 412 passes through the measuring pipe 411 and abuts against the side wall of the slide bar 41, so that the sliding plates 42 are not easily moved on the slide bar 41. When the data of the sheets are to be measured, the slide plate 42 is driven so that the stopper plates 43 are brought close to each other and abut the side walls of the plurality of stacked sheets, respectively. By observing the positions of the ends of the two measurement pipes 411 close to each other on the scale 11, data on the paper size can be accurately obtained.

Referring to fig. 4, the inner portion of the end of the sliding plate 42 away from the measuring pipe 411 is slidably provided with a lifting plate 421, and the side wall of the sliding plate 42 is provided with a fastening member 422, and in this embodiment, the fastening member 422 is preferably a bolt 412. Referring to fig. 2, the end of the lifting plate 421 away from the sliding plate 42 is provided with a limit rail 423, and the end of the sliding plate 42 away from the measuring pipe 411 is higher than the paper placing plate 32 on the flat car 31. In the working process, one end of the lifting plate 421 is adjusted to be embedded in the limit guide rail 423, and the lifting plate 421 is fixed on the sliding plate 42 by adjusting the fastener 422, so that the stability of the sliding plate 42 in the left-right movement is improved. When the size of the paper sheet is measured when the area of the paper sheet is smaller than the area of the paper discharge plate 32 on the flat car 31, the elevating plate 421 is adjusted to be contracted in the sliding plate 42. The lifting plate 421 is fixed by the fastener 422, and then the sliding plate 42 is driven, so that the limiting plate 43 on the sliding plate 42 can be abutted against the side wall of a large number of stacked paper sheets, and the measurement of the size of the paper sheets is facilitated.

Referring to fig. 1, the lifting assembly 5 includes two motors 51, two rotating shafts 52 and four steel cables 53, the two motors 51 are respectively fixed on the side wall of one end of the support 1 close to the platform, the two ends of the rotating shafts 52 along the length direction are rotatably connected to the support 1, and the rotating shafts 52 are coaxially and fixedly connected with the output shafts of the motors 51. Two rolling turntables 521 are coaxially and fixedly connected to each rotating shaft 52, one ends of four steel wire ropes 53 are fixed to the rolling turntables 521 and then wound on the rolling turntables 521, and the other ends of the four steel wire ropes are fixedly connected to four corners of the bearing plate 2. In this embodiment, the gap has been seted up at its length direction's both ends to loading board 2, and the length of loading board 2 is less than the distance between two connecting plates 331 simultaneously for the oscilaltion that carries out that loading board 2 can be stable.

When printing paper, two motors 51 are driven simultaneously so that the output shafts of the motors 51 drive the rotating shaft 52 to rotate simultaneously, and the winding turntable 521 on the rotating shaft 52 rotates so that the steel wire rope 53 can be wound and released on the winding turntable 521. When the rotating shaft 52 rotates, the four steel wire ropes 53 are wound on the winding disc at the same time, so that the bearing plate 2 is lifted in the vertical direction, and printing on paper is facilitated. When the rotating shaft 52 rotates in the opposite direction, the four steel wire ropes 53 are released at the same time, so that the supporting plate 2 descends in the vertical direction, and the four steel wire ropes 53 are fixed at the four corners of the supporting plate 2 respectively, so that the ascending and descending stability of the supporting plate 2 is improved.

The implementation principle of the embodiment is as follows: before printing on the sheets using the printing press, a large number of sheets are stacked on the paper-receiving plate 32 on the flat car 31. The loading plate 2 is adjusted to the position where the first guide rail 21 is butted against the second guide rail 22, then the flat car 31 is pushed to move on the first guide rail 21, and when the flat car 31 approaches the bracket 1, the positioning assembly 4 is adjusted to stack the papers neatly. When the flat car 31 moves onto the second guide rail 22, the height of the loading plate 2 is adjusted so that the paper placing plate 32 is slightly higher than the lifting plate 333. The cylinder 332 is driven to make the piston rod thereof drive the lifting plates 333 to approach each other, and the lifting plates 333 partially support the paper placing plate 32 while approaching each other, and slightly lift the paper placing plate 32 by a certain height, at which time the paper placing plate 32 is separated from the flat car 31.

Then, the flatbed 31 is moved from the second guide rail 22 on the loading plate 2 to the first guide rail 21, after the loading plate 2 is adjusted to be lifted to the position abutting against the paper placing plate 32, the adjusting cylinder 332 makes the piston rod thereof drive the lifting plate 333 to move away from each other, so that the paper placing plate 32 is stably placed on the loading plate 2, and then the height of the loading plate 2 is adjusted to print the paper. In the process, the paper placing plate 32 for placing a large amount of paper is conveyed to the bearing plate 2 through the flat car 31, on one hand, manual feeding is not needed, so that the paper placing plate 32 can be stably fixed on the bearing plate 2, and the printing of the paper is facilitated; on the other hand, the position of the paper is adjusted through the positioning component 4 before printing, so that the paper can be stacked neatly, and the problem of low efficiency of the paper in the feeding process is effectively solved.

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 paper loading attachment for printing machine, includes support (1), loading board (2) that are used for placing the paper that set up in printing machine feed inlet department, its characterized in that: the loading plate (2) can be vertically arranged in the bracket (1) in a lifting way, and the bracket (1) is provided with a feeding assembly (3) and a positioning assembly (4) for arranging paper;

the feeding assembly (3) comprises a flat car (31), a paper placing plate (32) and clamping pieces (33) symmetrically arranged at two ends of the bearing plate (2), a first guide rail (21) for the flat car (31) to move is arranged at one side of the bearing plate (2), a second guide rail (22) butted with the first guide rail (21) is arranged on the bearing plate (2), and the paper placing plate (32) is placed on the flat car (31);

the clamping piece (33) comprises two connecting plates (331), a plurality of air cylinders (332) and a lifting plate (333), the connecting plates (331) are respectively and fixedly connected to the supports (1) at the two ends of the bearing plate (2), the air cylinders (332) are respectively and fixedly connected to the two ends of the connecting plates (331) along the length direction of the connecting plates, and piston rods of the air cylinders (332) penetrate through the connecting plates (331) and then are in transmission connection with the lifting plate (333);

after the flat car (31) with the paper placing plate (32) moves onto the second guide rail (22), the air cylinder (332) is driven, and the lifting plate (333) drives the paper placing plate (32) to be separated from the flat car (31).

2. A sheet feeding device for a printing press according to claim 1, wherein: the lifting plate (333) comprises a clamping plate (3331) and a supporting plate (3332), the supporting plate (3332) is vertically and fixedly connected to the clamping plate (3331), one surface, far away from the supporting plate (3332), of the clamping plate (3331) is fixedly connected with one end of a piston rod of the air cylinder (332), and a lifting arc surface (3333) facing the paper placing plate (32) is formed in the supporting plate (3332).

3. A sheet feeding device for a printing press according to claim 2, wherein: put cardboard (32) and be close to both ends border punishment of the one side of flatbed (31) do not is provided with pulley (321), offer the confession on lifting cambered surface (3333) pulley (321) pivoted spout (3334), put cardboard (32) keep away from the one side of paper seted up a plurality ofly with second guide rail (22) assorted recess (322).

4. A sheet feeding device for a printing press according to claim 3, wherein: the positioning assembly (4) comprises a sliding rod (41), a plurality of sliding plates (42) and limiting plates (43), two ends of the sliding rod (41) in the length direction are fixed above one side, close to the first guide rail (21), of the support (1), the sliding plates (42) are arranged on the sliding rod (41) in a sliding mode respectively, and the limiting plates (43) are connected to one faces, close to the sliding plates (42), of the sliding plates in a vertical and fixed mode respectively.

5. The sheet feeding device for a printing press according to claim 4, wherein: slide holder is equipped with survey buret (411) on slide bar (41), be provided with bolt (412) on the lateral wall of survey buret (411), the one end of bolt (412) is passed sliding plate (42) with survey buret (411) threaded connection, be close to on support (1) the one side fixedly connected with scale (11) of slide bar (41), survey the one side that buret (411) are close to each other respectively with the one side that limiting plate (43) are close to each other is in on the coplanar.

6. The sheet feeding device for a printing press according to claim 5, wherein: the sliding plate (42) is provided with a lifting plate (421) in a sliding mode at one end far away from the measuring pipe (411), a fastening piece (422) is arranged on the side wall of the sliding plate (42), a limiting guide rail (423) is arranged at one end, far away from the sliding plate (42), of the lifting plate (421), and one end, far away from the measuring pipe (411), of the sliding plate (42) is higher than the paper discharge plate (32) on the flat car (31).

7. The sheet feeding device for a printing press according to claim 6, wherein: the lifting assembly (5) is arranged on the support (1), the lifting assembly (5) comprises two motors (51), two rotating shafts (52) and four steel wire ropes (53), the two motors (51) are respectively fixed on the support (1), two ends of each rotating shaft (52) in the length direction are rotatably connected to the support (1), and the rotating shafts (52) are in coaxial transmission connection with output shafts of the motors (51);

two rolling turntables (521) are respectively coaxially and fixedly connected to each rotating shaft (52), one ends of the four steel wire ropes (53) are fixed to the rolling turntables (521) and then wound on the rolling turntables (521), and the other ends of the four steel wire ropes are fixedly connected with four corners of the bearing plate (2).

8. A sheet feeding device for a printing press according to claim 7, wherein: one surface of the paper placing plate (32) far away from the groove (322) is fixedly connected with a plurality of supporting rods (323) in an integrated forming mode, and the area of the paper placing plate (32) is larger than that of the flat car (31).