CN211664302U

CN211664302U - Feeding mechanism of four-color printing machine

Info

Publication number: CN211664302U
Application number: CN201922337331.5U
Authority: CN
Inventors: 侯东海
Original assignee: Hunan Xinguoda Printing Co ltd
Current assignee: Hunan Xinguoda Printing Co ltd
Priority date: 2019-12-23
Filing date: 2019-12-23
Publication date: 2020-10-13
Anticipated expiration: 2029-12-23

Abstract

The utility model relates to a feed mechanism of four-color printing machine, it includes the frame, is used for stacking the tray of paper, is in the elevating platform in the frame and orders about the chain drive mechanism of the vertical displacement of elevating platform, the frame is in elevating platform length direction both sides and is provided with the gag lever post respectively, the crane corresponds spout and the spacing groove of seting up the confession gag lever post grafting with the tray, still be provided with the lead screw driving medium of ordering about gag lever post linear displacement in the frame. The utility model discloses have the phenomenon that reduces the paper and receive external disturbance slope to guarantee printed product quality's effect.

Description

Feeding mechanism of four-color printing machine

Technical Field

The utility model belongs to the technical field of lithography apparatus's technique and specifically relates to a feed mechanism of four-color printing machine is related to.

Background

The present four-color printing machine is especially one kind of offset printing machine for copying map with four kinds of ink, including black, medium blue, brown and green, and is especially one kind of offset printing machine for copying map with three primary colors, yellow, magenta and cyan, and black.

The prior Chinese patent with the publication number of CN204737484U discloses a tray pre-stacking device which is used as a feeding mechanism of a four-color printing machine; including shallow and lift defeated paper platform, lift defeated paper platform includes the mount, sliding connection has lift platen mount top to be provided with lift driving shaft and lift transition sprocket on the mount, lift driving shaft both ends all are provided with drive sprocket, the lift platen passes through the sling chain and is connected with the drive of lift driving shaft transmission with lift transition sprocket, the shallow lower extreme is provided with the gyro wheel simultaneously, pile up the paper that needs the printing earlier to go up the back to the shallow, the propelling movement shallow is to the lift platen on, along with the rising of lift platen again, realize printing in the entering printing machine of paper one by one, accomplish its feeding work.

The above prior art solutions have the following drawbacks: because the paper generally piles up higher on the shallow, when the shallow was in the lift platen, because the lift platen utilizes chain drive to realize its elevating movement, and during the chain drive, receive external disturbance easily (probably because the shaking force of machine itself, or the position of shallow at the lift platform is uneven, leads to the lift platen atress uneven), lead to its chain drive to rock to the slope of rocking of paper on probably leading to the shallow influences the accuracy that follow-up paper was carried and is counterpointed, thereby influences the quality of printing out the product.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims at providing a feed mechanism of four-color printing machine has the phenomenon that reduces the paper and receive external disturbance slope to the guarantee prints out product quality's effect.

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

the utility model provides a feed mechanism of four-color printing machine, includes the frame, is used for stacking the tray of paper, is in the elevating platform in the frame and orders about the chain drive mechanism of elevating platform vertical displacement, the frame is in elevating platform length direction both sides and is provided with the gag lever post respectively, the elevating platform corresponds with the tray and sets up spout and the spacing groove that supplies the gag lever post to peg graft, still be provided with the lead screw driving medium that orders about gag lever post linear displacement in the frame.

Through adopting the above-mentioned technical scheme, utilize spout and the spacing groove that sets up in elevating platform and tray both sides, make it after tray propelling movement to elevating platform, usable lead screw driving medium orders about two sets of gag lever posts and moves inwards along the spout is synchronous, and then two gag lever posts are pegged graft in two spacing grooves of tray, realize the clamping action to the tray both sides, utilize the grafting cooperation of gag lever post and spacing groove simultaneously, still can restrict the displacement around the tray, make stable stacking on the elevating platform of its tray, when its chain drive mechanism takes place to rock, also can not influence the stability of tray, thereby the guarantee piles up the regularity of paper on the tray, reach the effect that improves the printed product quality.

The present invention may be further configured in a preferred embodiment as: the screw rod transmission part comprises a screw rod and a guide rod which are arranged in parallel with the length direction of the lifting platform, the screw rod and the guide rod are both connected with one outward side of the limiting rod and penetrate through the side wall of the rack, and the screw rod is rotatably connected with the limiting rod and is in threaded fit with the rack.

Through adopting above-mentioned technical scheme, the guide bar plays the direction and restricts the effect of gag lever post rotation to the gag lever post, and then under the screw-thread fit effect of lead screw and frame, when ordering about the lead screw and rotate, can order about the gag lever post and be linear reciprocating motion, realizes the centre gripping to the tray or keep away from work.

The present invention may be further configured in a preferred embodiment as: the locating slot has been seted up along its axis to the lead screw outer wall, and the runner has been cup jointed to the lead screw in the outer section of frame, the runner inner wall is fixed with the locating piece of pegging graft in the locating slot.

By adopting the technical scheme, when the rotating wheel is driven to rotate, the screw rod can be driven to do rotation motion by utilizing the matching relation between the positioning block and the positioning groove, and further, the positioning groove is formed along the axis of the screw rod, so that when the rotating wheel does rotation motion, the screw rod can do axis displacement work relative to the rotating wheel.

The present invention may be further configured in a preferred embodiment as: connecting wheels are respectively and rotatably connected below two sides of the rack, the connecting wheels and the corresponding rotating wheels are wound with the same transmission belt, a connecting shaft is coaxially fixed between the two connecting wheels, and the connecting shaft is rotatably connected to the bottom of the rack; the thread directions of the two screw rods are opposite.

Through adopting above-mentioned technical scheme, utilize the connecting axle to realize the synchronous rotation work of two fifth wheels, because two fifth wheels are connected with the runner that corresponds through the drive belt respectively, when making it order about the connecting axle and rotate, can realize the synchronous syntropy rotation work of two sets of runners, and then under the effect that two lead screw thread opposite directions, order about two lead screws and do synchronous reverse displacement work, be convenient for order about the displacement work of two gag lever posts.

The present invention may be further configured in a preferred embodiment as: one end of the connecting shaft is also coaxially fixed with a worm wheel, the side wall of the rack is rotatably connected with a worm meshed with the worm wheel, and one end of the worm is connected with a motor.

Through adopting above-mentioned technical scheme, the motor orders about the worm and rotates, under the meshing effect of worm and worm wheel, realizes the rotation work of connecting axle, and then under the auto-lock performance that worm gear possessed, when the motor removes not initiatively orders about the worm and rotates, plays the limiting displacement to the worm wheel, can effectively prevent the reversal of lead screw, helps improving the stability of stop lever to the tray centre gripping.

The present invention may be further configured in a preferred embodiment as: the width of spout is greater than the width of gag lever post, just the both sides of spacing groove open end are the direction inclined plane setting.

By adopting the technical scheme, the sliding groove is formed in the lifting platform and only provides sliding space for the limiting rod, so that the width of the sliding groove is larger than that of the limiting rod, the friction force between the limiting rod and the sliding groove can be reduced, and the displacement work of the limiting rod is facilitated; meanwhile, the guide inclined planes at the two ends of the sliding groove are utilized, so that the limiting rod can be conveniently inserted into the limiting groove to work.

The present invention may be further configured in a preferred embodiment as: the lower end of the limiting rod is suspended above the bottom of the rack, and the lower end of the limiting rod is rotatably connected with a guide wheel of which the outer wall is in rolling contact with the bottom of the rack.

Through adopting above-mentioned technical scheme, utilize leading wheel and frame bottom to contradict, make its gag lever post and frame bottom leave the clearance, reduce the frictional force between gag lever post and the frame, the displacement work of the gag lever post of being convenient for.

The present invention may be further configured in a preferred embodiment as: the tray lower extreme is installed the gyro wheel, be provided with the guide way that the gyro wheel slided into on the elevating platform twice.

Through adopting above-mentioned technical scheme, set up the displacement work of the tray of being convenient for of gyro wheel under the tray, and then utilize the guide way on the elevating platform to supply the gyro wheel to slide in, make it can play the guide orientation effect to the tray.

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

1. the limiting rods on the two sides of the rack are driven to linearly displace by the screw rod transmission piece, when the tray is positioned on the lifting platform, the limiting rods can be correspondingly inserted into the limiting grooves on the two sides of the tray to limit the front and back displacement and the left and right displacement of the tray, so that the tray can be stably parked on the lifting platform, the uniformity of paper stacked on the European tray is guaranteed, and the quality of printed products is guaranteed;

2. utilize the drive belt to realize the interlock work of fifth wheel and runner, two lead screw opposite direction set up simultaneously, when making it order about the connecting axle and rotate, can realize two sets of pivoted rotation works to order about two lead screws and do synchronous reverse displacement work, be convenient for realize the displacement work of two gag lever posts.

Drawings

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

FIG. 2 is a schematic view of a portion of the spacing rod and the tray of FIG. 1;

FIG. 3 is a schematic view of a portion of the pallet and lift table of FIG. 1;

FIG. 4 is a schematic view of the screw drive of FIG. 1.

In the figure, 1, a frame; 2. a tray; 3. a lifting platform; 4. a chain transmission mechanism; 5. a limiting rod; 6. a chute; 7. a limiting groove; 8. a screw rod transmission part; 81. a screw rod; 82. a guide bar; 9. a rotating wheel; 10. positioning a groove; 11. positioning blocks; 12. a connecting wheel; 13. a connecting shaft; 14. an annular groove; 15. a transmission belt; 16. a worm gear; 17. a worm; 18. a motor; 19. a guide wheel; 20. a roller; 21. a guide groove.

Detailed Description

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

Referring to fig. 1 and 2, a feeding mechanism of a four-color printing machine disclosed by the present invention comprises a frame 1, a lifting platform 3 disposed in the frame 1, and a chain transmission mechanism 4 for driving the lifting platform 3 to move vertically; the lifting platform 3 is also provided with a tray 2, four groups of rollers 20 are arranged below the tray 2, and the four groups of rollers 20 form four corner points of a square; two guide grooves 21 are correspondingly formed in the lifting platform 3, and after the tray 2 is loaded with paper, the rollers 20 enter the lifting platform 3 along the guide grooves 21.

Referring to fig. 1 and 2, two sides of the rack 1 in the length direction of the lifting platform 3 are respectively and vertically provided with a limiting rod 5, and the lifting platform 3 and two sides of the tray 2 are correspondingly provided with a sliding groove 6 and a limiting groove 7; the width of the sliding groove 6 is larger than that of the limiting rod 5, the width of the limiting groove 7 is equal to that of the limiting rod 5, and two sides of the opening end of the limiting groove 7 are provided with guide inclined planes; the frame 1 is further provided with a screw rod transmission member 8 (refer to fig. 3) for driving the two limit rods 5 to linearly displace along the length direction of the lifting table 3.

Referring to fig. 3 and 4, the lead screw transmission member 8 includes a lead screw 81 and a guide rod 82, the lead screw 81 and the guide rod 82 are both arranged in parallel with the length direction of the lifting table 3, the lead screw 81 is rotatably connected to the outward side of the limit rod 5, the lead screw 81 penetrates through the side wall of the rack 1 and is in threaded fit with the rack 1, one end of the guide rod 82 is fixed with the outward side of the limit rod 5, and the other end penetrates through the side wall of the rack 1; a section of the screw rod 81, which is positioned outside the rack 1, is sleeved with a rotating wheel 9, the outer wall of the screw rod 81 is provided with a positioning groove 10 along the axis thereof, and the inner wall of the rotating wheel 9 is fixed with a positioning block 11 inserted in the positioning groove 10; when the rotating wheel 9 rotates, the screw rod 81 can be driven to rotate and linearly displace along the rack 1, and the limiting rod 5 is driven to linearly slide. Wherein, the lower extreme of gag lever post 5 rotates and is connected with leading wheel 19, and the outer wall of leading wheel 19 rolls with frame 1 bottom and contradicts, makes its gag lever post 5 lower extreme hang above frame 1 bottom.

In this embodiment, the two screws 81 have opposite screw directions. The bottom of the rack 1 is further rotatably connected with a connecting shaft 13, the connecting shaft 13 is arranged in parallel with the screw rod 81 and is positioned under the screw rod 81, two ends of the connecting shaft 13 extend out of the rack 1 and are positioned at two ends outside the rack 1, a connecting wheel 12 is respectively fixed at each end, annular grooves 14 are formed in the peripheral walls of the connecting wheel 12 and the rotating wheel 9, and a driving belt 15 is wound in the annular grooves 14 of the connecting wheel 12 and the rotating wheel 9 to realize synchronous rotation work of the connecting wheel 12 and the rotating wheel 9.

One end of the connecting shaft 13 is also coaxially fixed with a worm wheel 16, the rack 1 is correspondingly and rotatably connected with a worm 17 meshed with the worm wheel 16, meanwhile, the side wall of the rack 1 is also fixedly provided with a motor 18, an output shaft of the motor 18 is coaxially fixed with one end of the worm 17, the motor 18 is communicated with an external power supply through an electric wire, and when the motor is electrified, the motor 18 drives the worm 17 to rotate, so that the connecting shaft 13 and the screw rod 81 are driven to rotate, and synchronous reverse displacement of the two limiting rods 5 is realized.

The implementation principle of the embodiment is as follows: tray 2 full of paper will be loaded, under the guide effect of guide way 21 to gyro wheel 20, the stagnation is on elevating platform 3, and then motor 18 starts, order about worm 17 to drive worm wheel 16 and rotate, and then drive connecting axle 13 and fifth wheel 12 and rotate, realize the synchronous rotation of two lead screws 81 then, under the guide effect of guide bar 82 to gag lever post 5, order about two gag lever posts 5 and move inwards in step, make its two gag lever posts 5 peg graft in the spacing groove 7 of tray 2 both sides, the realization is to the centre gripping work of tray 2.

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 four-color printing machine, includes frame (1), tray (2) that are used for stacking the paper, be in elevating platform (3) in frame (1) and order about chain drive (4) of elevating platform (3) vertical displacement, its characterized in that: frame (1) is in elevating platform (3) length direction both sides and is provided with gag lever post (5) respectively, elevating platform (3) correspond with tray (2) and offer spout (6) and spacing groove (7) that supply gag lever post (5) to peg graft, still be provided with lead screw driving medium (8) of ordering about gag lever post (5) linear displacement on frame (1).

2. The feed mechanism of a four-color printing press according to claim 1, wherein: lead screw driving medium (8) include with elevating platform (3) length direction parallel arrangement's lead screw (81) and guide bar (82), lead screw (81) and guide bar (82) all are connected with gag lever post (5) one side outwards and pass the lateral wall of frame (1), lead screw (81) rotate with gag lever post (5) and be connected and with frame (1) screw-thread fit.

3. The feed mechanism of a four-color printing press according to claim 2, wherein: the positioning groove (10) is formed in the outer wall of the screw rod (81) along the axis of the screw rod, the section, located outside the rack (1), of the screw rod (81) is sleeved with the rotating wheel (9), and the inner wall of the rotating wheel (9) is fixedly provided with the positioning block (11) inserted into the positioning groove (10).

4. A feed mechanism for a four-color printing press according to claim 3, wherein: connecting wheels (12) are further rotatably connected to the lower portions of the two sides of the rack (1) respectively, the connecting wheels (12) and the corresponding rotating wheels (9) are wound with the same transmission belt (15), a connecting shaft (13) is coaxially fixed between the two connecting wheels (12), and the connecting shaft (13) is rotatably connected to the bottom of the rack (1); the thread directions of the two screw rods (81) are opposite.

5. The feed mechanism of a four-color printing press according to claim 4, wherein: one end of the connecting shaft (13) is also coaxially fixed with a worm wheel (16), the side wall of the rack (1) is rotatably connected with a worm (17) meshed with the worm wheel (16), and one end of the worm (17) is connected with a motor (18).

6. The feed mechanism of a four-color printing press according to claim 1, wherein: the width of the sliding groove (6) is larger than that of the limiting rod (5), and two sides of the opening end of the limiting groove (7) are arranged in a guide inclined plane.

7. The feed mechanism of a four-color printing press according to claim 1, wherein: the lower end of the limiting rod (5) is suspended above the bottom of the rack (1), and the lower end of the limiting rod (5) is rotatably connected with a guide wheel (19) of which the outer wall is in rolling contact with the bottom of the rack (1).

8. The feed mechanism of a four-color printing press according to claim 1, wherein: the lower end of the tray (2) is provided with a roller (20), and the lifting platform (3) is provided with two guide grooves (21) for the roller (20) to slide in.