CN210366092U - Four-color printing machine with pre-feeding device - Google Patents

Abstract

The utility model discloses a four-color printing machine of paper device in advance is gone up in area, relate to printing machine auxiliary assembly's technical field, it includes the printing machine body, the below lift of paper mouth is provided with the elevating platform on the printing machine body, be fixed with roof and two first guide rails on the elevating platform in proper order, the one end that the printing machine body is close to the elevating platform is fixed with the base, the base up end is fixed with two second guide rails, two second guide rail tops slide jointly and be provided with the cardboard, the one end that the base is close to the elevating platform is fixed with the slide, be provided with the slide bar directly over the slide, it is provided with two fender rules to slide between slide bar and the slide, two keep off rule upper end screw threads and wear to be equipped with the double threaded rod parallel with the slide bar, the helicla flute pitch at double threaded rod both ends is the same and screw. The utility model discloses a rotate double threaded rod and drive two and keep off the rule and do the synchronous motion that the stroke is the same, guaranteed the neat degree of piling of paper pile as far as possible.

Description

Four-color printing machine with pre-feeding device

Technical Field

The utility model belongs to the technical field of the technique of printing machine auxiliary assembly and specifically relates to a four-color printing machine of paper device is gone up in advance in area is related to.

Background

In particular to a printer which uses four kinds of black, medium blue, brown and green ink to realize the offset printing method of map duplication. The printer is usually selected to be closed when needing to feed paper, the time consumption is long, and the plate correction is needed when restarting the printer, so that the cutting and the ink are undoubtedly wasted; if the pre-feeding operation is required to be carried out when the printing machine works, an operator needs to drill to fly to stack paper below, and great potential safety hazards exist.

In order to solve the problems, a Chinese patent with a patent publication number of CN201268519Y provides a pre-feeding device of a printing machine, and relates to printing equipment. It includes the elevating platform, the guiding ruler, the upper paper layer board, the support arm, slide bar and slider, be equipped with the roof on the elevating platform, the elevating platform transversely is equipped with two spacing in the both sides of roof, be equipped with matched with gear and rack on elevating platform and the roof respectively, vertically laid two parallel tracks that link up respectively on the roof and the ground face at elevating platform rear, still transversely be equipped with the spout that intersects perpendicularly with the track on the ground face at elevating platform rear, the slide bar sets up in the top of spout, the slide bar both ends are fixed on the organism frame at printing machine rear portion through the support arm, the slider cluster is on the slide bar, the guiding ruler upper end is fixed on the slider, the lower extreme card is in the spout, be fixed with four pulleys that are used for slideing on the track. The utility model has the advantages of simple structure, low cost and being suitable for the transformation of the existing printing equipment.

The above prior art solutions have the following drawbacks: in order to ensure that the paper pile on the upper paper supporting plate can be aligned with a printing plate of a printing machine when entering the lifting table, the side edge of the paper pile on the upper paper supporting plate is aligned through the guiding rule, but the guiding rule only slides on the sliding rod through the sliding block, when the moving amounts of the sliding blocks on the two sides are inconsistent, the paper pile is easy to deflect, further deflection correction is needed before the paper is fed to the card paper, and the printing efficiency is lower.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a four-color printing machine of paper device is in advance gone up in area that can effectively pile up neatly.

The utility model aims at realizing through the following technical scheme:

a four-color printing machine with a pre-feeding device comprises a printing machine body, wherein a lifting table is arranged below a paper feeding port of the printing machine body in a lifting mode, a top plate is fixed on the upper end face of the lifting table, two parallel first guide rails are fixed on the upper end face of the top plate and are arranged along the length direction of the printing machine body, a base is horizontally fixed at one end, close to the lifting table, of the printing machine body, two second guide rails are fixed on the upper end face of the base and are respectively positioned on the extension lines of the two first guide rails, a paper feeding plate is arranged above the two second guide rails in a sliding mode, a slide rail perpendicular to the first guide rails is fixed at one end, close to the lifting table, a slide bar connected to the end portion of the printing machine body in a clamping mode is arranged right above the slide rail, two stop gauges are arranged between the slide bar and the slide rail in a sliding mode, two keep off rule upper end screw thread wear to be equipped with the parallel double threaded rod of slide bar, the helicla flute pitch at double threaded rod both ends is the same and screw thread opposite direction, two keep off the rule respectively with the helicla flute screw thread adaptation at double threaded rod both ends.

By adopting the technical scheme, a new paperboard is stacked on the upper paperboard, the upper paperboard is slid on the second guide rail, when the upper paperboard moves to a position between the two stop gauges, the double-end threaded rod is rotated, and the stop gauges at the two ends of the double-end threaded rod are driven to move close to or away from each other along the length direction of the double-end threaded rod in an equal-stroke manner, so that paper stacks can be stacked in the middle of the upper paperboard, the paper stack positioning deviation caused by manually adjusting the stop gauges at the two sides is avoided, the paper feeding accuracy is improved, and the printing efficiency of the four-color printing machine is ensured; after the paper pile is piled, the upper paper board is continuously pushed from the first guide rail and carries out paper feeding operation along with the lifting platform.

Further setting the following steps: the slide with equal rigid coupling has the stand between the slide bar is with the end, two are run through respectively at the both ends of double-end threaded rod the stand, the coaxial rigid coupling of one end of double-end threaded rod has the hand wheel.

Through adopting above-mentioned technical scheme, the stand has increased the stability between slide bar and the slide, prevents the skew of slide bar as far as to influence the smooth and easy slip of keeping off the rule, and rotatory hand wheel drives double-end threaded rod and rotates on two stands, has realized two convenient adjustments of keeping off the interval between the rule.

Further setting the following steps: and a triangular plate parallel to the second guide rail is fixedly connected to one side of the stop gauge, which is far away from the lifting platform, in a vertical manner.

Through adopting above-mentioned technical scheme, the set-square has increased the area of contact of keeping off the rule and last paperboard and going up the pile, has further guaranteed the neat effect of the pile of keeping off the rule to the paper.

Further setting the following steps: go up under the cardboard four corners department of terminal surface all be provided with the second guide rail with the pulley of the adaptation that all slides of first guide rail, go up the cardboard and keep away from the one end of elevating platform with be fixed with the dead axle directly over the second guide rail, it is used for the cohesion to rotate on the dead axle the second guide rail is right go up the cardboard and carry out the left side of locking and embrace to stop and the right side is embraced, a left side embrace to stop with the right side is embraced to stop with the ascending diameter in the vertical side of dead axle is the symmetry setting, it is right that the cardboard tip still is provided with to be used for a left side embrace to stop with the right side is embraced to stop and is carried out the locking means who locks.

By adopting the technical scheme, the four pulleys drive the upper paper board to slide along the second guide rail and the first guide rail, so that the upper paper board is effectively prevented from shifting in the carrying process, and the one-time positioning of the paper stack on the upper paper board is realized; go up the cardboard and advance when setting the position, stir simultaneously that left band-type brake and right band-type brake make it around the dead axle rotation and be and draw close each other and order about, until the both sides band-type of first guide rail or second guide rail are stopped tightly, rethread locking device is to band-type brake and right band-type brake and carry out the locking to left band-type and right, ensures that the cardboard can firmly be fixed on first guide rail or second guide rail to guarantee that paper piles lasts neatly.

Further setting the following steps: locking means connects including rotating the upper paper board tip just is located the elliptical wheel under the dead axle, the both ends of elliptical wheel major axis articulate respectively and are connected with left connecting rod and right connecting rod, left side connecting rod with right connecting rod respectively with the left side embrace to stop with the right side embraces to stop articulated connection.

By adopting the technical scheme, the long shaft of the elliptic wheel is in a vertical state by rotating the elliptic wheel, and then the elliptic wheel drives the left connecting rod and the right connecting rod to pull the left brake and the right brake to be close to each other, so that the end parts of the left brake and the right brake, which are far away from the fixed shaft, are clasped on the two sides of the first guide rail or the second guide rail, and the upper paperboard cannot move; when locking of the locking device needs to be relieved, the long shaft of the locking device is made to be in a horizontal state by rotating the elliptical wheel, and the left connecting rod and the right connecting rod push the left brake and the right brake to be away from each other, so that the brake operation of the upper paperboard by the left brake and the right brake is more convenient.

Further setting the following steps: the left brake and the right brake are fixedly connected with the adjacent side walls, and the brake block is far away from the dead axle.

Through adopting above-mentioned technical scheme, the left side is embraced and is stopped and the right side is embraced and is held tightly in first guide rail or second guide rail both sides through the brake block, has increased the left side and has embraced the friction between stopping and first guide rail or the second guide rail or the right side, has further guaranteed the stability when going up the cardboard and being stopped.

Further setting the following steps: the end part of the printer body is provided with clamping sleeves which are matched with the sliding rods in an inserted manner and are fixed at positions close to the two ends of the sliding rods, the peripheral walls of the sliding rods close to the clamping sleeves are vertically provided with accommodating grooves, bulges are elastically arranged in the accommodating grooves, elastic pieces are elastically connected between the bulges and the bottom walls of the accommodating grooves, and the peripheral walls of the clamping sleeves are provided with through holes matched with the bulges in an inserted manner.

Through adopting above-mentioned technical scheme, insert the slide bar in the cutting ferrule, the arch is pressed into in the holding tank by the cutting ferrule, the elastic component is compressed and is produced deformation, when holding tank opening and perforation alignment, the elastic component after the deformation promotes protruding bullet and goes into in the perforation to fix the slide bar in the cutting ferrule, fix the paper device in advance on the base, avoid using the back base as far as possible to take place the skew and lead to first guide rail and second guide rail dislocation and influence the accurate paper effect of going up of paper heap.

Further setting the following steps: and a buffer pad is adhered to the inner side wall of the clamping sleeve close to the sliding rod.

Through adopting above-mentioned technical scheme, the blotter can absorb the vibration that some printing machine bodies produced at the course of the work, avoids on the printing machine body too much vibration to transmit the base and influence the stability of the structure of going up the paper device in advance as far as possible.

To sum up, the utility model discloses a beneficial technological effect does:

1. the double-threaded rod is rotated to drive the stop gauges at the two ends to do equal-stroke movement which is close to or away from each other along the length direction of the double-threaded rod, so that a paper pile can be aligned in the middle of the upper paper board, the paper pile positioning deviation caused by manually adjusting the stop gauges at the two sides is avoided, the paper feeding accuracy is improved, and the printing efficiency of the four-color printing machine is ensured;

2. the left brake and the right brake which are rotatably connected to the end part of the upper paper board are clasped on two sides of the first guide rail or the second guide rail to fix the upper paper board, so that the stability of the upper paper board on the first guide rail or the second guide rail when the upper paper board moves to a preset position is ensured as much as possible;

3. the sliding rod is connected with the printing machine body through the insertion of the clamping sleeve and the insertion adaptation of the protrusions and the insertion holes, so that the effective alignment of the first guide rail and the second guide rail is guaranteed as far as possible, and the accuracy of paper feeding in a paper pile is guaranteed.

Drawings

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

fig. 2 is a top view of the overall structure of the present invention;

FIG. 3 is a schematic cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is an enlarged partial schematic view of portion B of FIG. 1;

fig. 5 is a partially enlarged schematic view of a portion C in fig. 3.

Reference numerals: 1. a printer body; 2. a lifting platform; 3. a top plate; 4. a first guide rail; 5. a base; 6. a second guide rail; 7. feeding a paperboard; 8. a slideway; 9. a slide bar; 10. a gauge is blocked; 11. a double-headed threaded rod; 12. a column; 13. a hand wheel; 14. a set square; 15. a pulley; 16. fixing a shaft; 17. a left brake; 18. a right brake; 19. an elliptical wheel; 20. a left connecting rod; 21. a right connecting rod; 22. a brake pad; 23. a card sleeve; 24. accommodating grooves; 25. a protrusion; 26. an elastic member; 27. perforating; 28. a cushion pad; 29. a rotating rod; 30. a handle.

Detailed Description

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

Referring to fig. 1 and 4, for the four-color printing machine with a pre-feeding device disclosed by the present invention, the four-color printing machine comprises a printing machine body 1, wherein a lifting platform 2 is arranged below a feeding port of the printing machine body 1 in a lifting manner, and the lifting manner of the lifting platform 2 is a conventional technical means in the prior art in the field, and is not described herein again; the upper end face of the lifting table 2 is fixedly connected with a top plate 3, the upper end face of the top plate 3 is fixedly provided with two first guide rails 4 which are arranged in parallel and along the length direction of the printing machine body 1, one end of the printing machine body 1 close to the lifting table 2 is horizontally fixed with a base 5, the upper end face of the base 5 is provided with a paper pre-feeding device, and the paper pre-feeding device comprises two second guide rails 6 which are fixedly connected to the upper end face of the base 5 and are respectively positioned on the extension lines of the two first guide rails 4; two second guide rails 6 tops are slided jointly and are provided with cardboard 7, go up cardboard 7 under the four corners department of terminal surface all rotate be connected with second guide rail 6 and first guide rail 4 all slide the pulley 15 of adaptation.

The new paperboard is stacked on the upper paperboard 7, the upper paperboard 7 is pushed to slide on the second guide rail 6 through the pulley 15 below the upper paperboard 7, the upper paperboard 7 can be pushed to the first guide rail 4 by continuously pushing the upper paperboard 7, and the arrangement of the first guide rail 4 and the second guide rail 6 enables the paper stack on the upper paperboard 7 to be always kept fixed in position on the horizontal plane in the process of moving along with the upper paperboard 7, so that the situation that the paper stack cannot be aligned with printing plates in the printer body 1 when the paper stack shifts along with the upper paperboard 7 is avoided, and the product quality of the four-color printer is finally influenced.

Referring to fig. 1 and 2, a slide rail 8 perpendicular to the length direction of the first guide rail 4 is fixedly connected to the upper end face of one end of the base 5 close to the lifting platform 2, the end portions of the first guide rail 4 and the second guide rail 6 close to each other are respectively located above groove walls on two sides of the slide rail 8, a slide rod 9 connected to the end portion of the printing body in a clamping manner is arranged right above the slide rail 8, the slide rod 9 is arranged parallel to the slide rail 8, two vertically-arranged stop gauges 10 are arranged between the slide rod 9 and the slide rail 8 in a sliding manner, one end of each stop gauge 10 is sleeved on the slide rod 9, the other end of each stop gauge 10 is matched with the slide rail 8 in a sliding manner, the width of the groove on the slide rail 8 is equal to the width of the lower end of each stop gauge 10, triangular plates 14 parallel to the second guide rail.

Two keep off rule 10 upper end still the screw thread and wear to be equipped with double threaded rod 11 parallel with slide bar 9, the helicla flute pitch at double threaded rod 11 both ends is the same and screw thread opposite direction, two keep off rule 10 respectively with the helicla flute screw thread adaptation at double threaded rod 11 both ends, equal fixedly connected with stand 12 between slide 8 and the slide bar 9 synteny, two stands 12 are run through respectively at double threaded rod 11 both ends, the coaxial rigid coupling of one end of double threaded rod 11 has hand wheel 13.

When the paper stack moves to the upper part of the slideway 8 along with the upper paper board 7, the rotating hand wheel 13 drives the double-threaded rod 11 to rotate on the two upright posts 12, the double-threaded rod 11 drives the stop gauges 10 at the two ends of the double-threaded rod to do equal-stroke motion of mutual approaching or mutual separating along the length direction of the double-threaded rod 11 when rotating, and when the double-threaded rod 11 drives the two stop gauges 10 to mutually approach, the paper stack can be stacked in the middle of the upper paper board 7, so that the paper stack positioning deviation caused by manually adjusting the stop gauges 10 at the two sides is avoided, the paper feeding accuracy is improved, and the printing efficiency of a four-color printing machine is; when the stop gauge 10 moves, the upper end of the stop gauge is sleeved on the sliding rod 9 to slide, the lower end of the stop gauge slides in the slide way 8, and the stop gauge 10 is limited doubly to ensure that the stop gauge 10 can be always kept in a vertical state in the sliding process, so that the stacking effect of the stop gauge 10 on book stacks is ensured as much as possible; the contact area of the stop gauge 10 and the paper stack on the upper paper board 7 is increased by the triangular plate 14, the stacking effect of the stop gauge 10 on the paper stack is further ensured, and the hand wheel 13 provides convenience for synchronous equidistant adjustment of the two stop gauges 10.

Referring to fig. 4, pulleys 15 which are matched with the second guide rail 6 and the first guide rail 4 in a sliding manner are connected to four corners of the lower end face of the upper paperboard 7 in a rolling manner, a fixed shaft 16 is fixed above the second guide rail 6 at one end of the upper paperboard 7 far away from the lifting platform 2, a left brake 17 and a right brake 18 which are used for embracing the second guide rail 6 and locking the upper paperboard 7 are rotatably connected to the fixed shaft 16, and the left brake 17 and the right brake 18 are symmetrically arranged with the diameter of the fixed shaft 16 in the vertical direction; go up 7 tip of cardboard and still be provided with the locking means who is used for locking left band-type brake 17 and right band-type brake 18, locking means is including rotating the elliptical wheel 19 of connecting at 7 tip of last cardboard and being located dead axle 16 under, coaxial fixedly connected with one end rotates the bull stick 29 of connecting at 7 tip of last cardboard on the elliptical wheel 19, the one end that the cardboard 7 was kept away from to the bull stick 29 is fixed with handle 30, the both ends of 19 major axes of elliptical wheel articulate respectively and are connected with left connecting rod 20 and right connecting rod 21, left connecting rod 20 and right connecting rod 21 are located one side that the cardboard 7 was kept away from to the elliptical wheel 19 and articulate with the position that left band-type brake 17 and right band-type brake 18 are close to the bull stick 29 respectively and are connected, the equal fixedly connected with brake block 22 of lateral wall that 16 one end is adjacent is.

The four pulleys 15 drive the upper paper board 7 to slide along the second guide rail 6 and the first guide rail 4, so that the upper paper board 7 is effectively prevented from shifting in the carrying process, and the one-time positioning of the paper stack on the upper paper board 7 is realized; when the upper paperboard 7 moves to a given position, the elliptical wheel 19 is rotated to enable the long axis of the upper paperboard to be in a vertical state, and then the elliptical wheel 19 drives the left connecting rod 20 and the right connecting rod 21 to pull the left brake 17 and the right brake 18 to approach each other, so that the end parts, far away from the fixed shaft 16, of the left brake 17 and the right brake 18 are clasped on the two sides of the first guide rail 4 or the second guide rail 6, and the upper paperboard 7 cannot move; when the upper paperboard 7 needs to be slid, the elliptical wheel 19 is rotated to enable the long axis of the elliptical wheel to be in a horizontal state, the left connecting rod 20 and the right connecting rod 21 push the left brake 17 and the right brake 18 to be away from each other, the elliptical wheel 19 realizes communication control of the left brake 17 and the right brake 18, and the upper paperboard 7 is more convenient and faster to brake; the brake block 22 increases the friction between the left brake 17 or the right brake 18 and the first guide rail 4 or the second guide rail 6, and further ensures the stability of the upper paperboard 7 when being braked.

Referring to fig. 3 and 5, the end of the printer body 1 is fixed with cutting sleeves 23 which are in splicing fit with the slide bars 9 at positions close to two ends of the slide bars 9, the cross sections of the cutting sleeves 23 are Y-shaped, the peripheral walls of the slide bars 9 close to the cutting sleeves 23 are vertically provided with accommodating grooves 24, bulges 25 are elastically arranged in the accommodating grooves 24, elastic pieces 26 are elastically connected between the bulges 25 and the bottom walls of the accommodating grooves 24, the elastic pieces 26 are preferably springs, the peripheral walls of the cutting sleeves 23 are provided with through holes 27 which are in splicing fit with the bulges 25 in a penetrating manner, cushion pads 28 are further adhered to the inner side walls of the cutting sleeves 23.

The sliding rod 9 is inserted into the sleeve 23, the bulge 25 is pressed into the accommodating groove 24 by the sleeve 23, the elastic piece 26 is compressed to generate deformation, when the opening of the accommodating groove 24 is aligned with the through hole 27, the deformed elastic piece 26 pushes the bulge 25 to be bounced into the through hole 27, so that the sliding rod 9 is fixed in the sleeve 23, the stable connection between the pre-feeding device on the base 5 and the printing machine body 1 is further stabilized, and the problem that the accurate feeding effect of a paper pile is influenced due to the fact that the first guide rail 4 and the second guide rail 6 are staggered due to the fact that the base 5 deviates after long-time use is avoided as much as possible; the buffer pad 28 can absorb part of the vibration generated by the printer body 1 during working, so as to prevent excessive vibration on the printer body 1 from being transmitted to the base 5 to influence the structural stability of the pre-feeding device.

The implementation principle and the beneficial effects of the embodiment are as follows:

pile up new card paper on last cardboard 7, cardboard 7 on second guide rail 6 slides, go up cardboard 7 and go to two when keeping off between the rule 10, rotatory double threaded rod 11, double threaded rod 11 drives the rule 10 that keeps off at its both ends when rotatory and is close to or the equal stroke motion of keeping away from each other along 11 length direction of double threaded rod, double threaded rod 11 drives two and keeps off the rule 10 when being close to each other, can pile the paper at the middle part of last cardboard 7, the paper pile positioning deviation that causes when having avoided keeping off rule 10 because of artificial adjustment both sides, the accuracy of last paper has been improved, the printing efficiency of four-color printing machine has been guaranteed.

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 (8)

1. The utility model provides a four-color printing machine of paper device in advance in area, includes printing machine body (1), the below lift of paper mouth is provided with elevating platform (2) on printing machine body (1), and elevating platform (2) up end is fixed with roof (3), roof (3) up end is fixed with two parallel arrangement and follows printing machine body (1) length direction's first guide rail (4), its characterized in that: the printing machine comprises a printing machine body (1), a base (5) is horizontally fixed at one end close to an elevating platform (2), two second guide rails (6) which are respectively located on the extension lines of the first guide rails (4) are fixed on the upper end face of the base (5), a paper board (7) is arranged above the second guide rails (6) in a sliding mode, one end of the base (5) close to the elevating platform (2) is fixedly provided with a slide (8) which is perpendicular to the first guide rails (4), a sliding rod (9) which is connected with the end part of the printing body in a clamping mode is arranged right above the slide (8), two end covers are arranged between the sliding rod (9) and the slide (8) in a sliding mode, a stop gauge (10) matched with the sliding of the other end of the sliding rod (9) and the slide (8) in a sliding mode is arranged on the upper end thread of the stop gauge (10), and a double-end thread rod (11) parallel to, the spiral groove screw pitch at double threaded rod (11) both ends is the same and screw thread opposite direction, two keep off rule (10) respectively with the spiral groove screw thread adaptation at double threaded rod (11) both ends.

2. A four-color printing press with pre-feeding of paper according to claim 1, characterised in that: slide (8) with equal rigid coupling has stand (12) between slide bar (9) the same end, the both ends of double-end threaded rod (11) run through two respectively stand (12), the coaxial rigid coupling of one end of double-end threaded rod (11) has hand wheel (13).

3. A four-color printing press with pre-feeding of paper according to claim 2, characterised in that: and a triangular plate (14) parallel to the second guide rail (6) is vertically and fixedly connected to one side of the stop gauge (10) far away from the lifting platform (2).

4. A four-color printing press with pre-feeding of paper according to claim 1, characterised in that: go up cardboard (7) down the four corners department of terminal surface all be provided with second guide rail (6) with pulley (15) of first guide rail (4) equal sliding adaptation, go up cardboard (7) and keep away from the one end of elevating platform (2) with be fixed with dead axle (16) directly over second guide rail (6), it is used for the cohesion to rotate on dead axle (16) be connected with to rotate second guide rail (6) and right go up cardboard (7) and carry out the left side of locking and embrace (17) and the right side and embrace (18) of stopping, a left side embrace (17) and the right side embrace (18) of stopping with dead axle (16) vertical ascending diameter is the symmetry setting, it still is provided with and is used for right to go up cardboard (7) tip a left side embrace (17) of stopping with the right side is embraced the locking means that (18) lock.

5. The four-color printing press with pre-feeding of paper according to claim 4, characterized in that: locking means connects including rotating go up cardboard (7) tip and be located elliptical wheel (19) under dead axle (16), the both ends of elliptical wheel (19) major axis articulate respectively and are connected with left connecting rod (20) and right connecting rod (21), left side connecting rod (20) with right connecting rod (21) respectively with the left side embrace to stop (17) with the right side embraces to stop (18) articulated connection.

6. The four-color printing press with pre-feeding of paper according to claim 5, characterized in that: the brake block (22) is fixedly connected to the adjacent side wall of the left brake (17) and the right brake (18), and the brake block (22) is far away from the dead axle (16).

7. A four-color printing press with pre-feeding of paper according to claim 1, characterised in that: printing machine body (1) tip in be close to slide bar (9) both ends department all be fixed with cutting ferrule (23) of slide bar (9) grafting adaptation, slide bar (9) are close to the vertical holding tank (24) of having seted up of perisporium of cutting ferrule (23), elasticity is provided with arch (25) in holding tank (24), arch (25) with elastic component (26) of elastic connection between holding tank (24) diapire, cutting ferrule (23) perisporium run through set up with perforation (27) of protruding (25) grafting adaptation.

8. The four-color printing press with pre-feeding of paper according to claim 7, characterized in that: and a buffer pad (28) is adhered to the inner side wall of the clamping sleeve (23) close to the sliding rod (9).

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