CN218660925U

CN218660925U - Offset press

Info

Publication number: CN218660925U
Application number: CN202223094485.4U
Authority: CN
Inventors: 李传斌; 崔海伟
Original assignee: Zibo Wanhetong Packaging Products Co ltd
Current assignee: Zibo Wanhetong Packaging Products Co ltd
Priority date: 2022-11-21
Filing date: 2022-11-21
Publication date: 2023-03-21
Anticipated expiration: 2032-11-21

Abstract

The utility model relates to the printing field, in particular to an offset printing machine, which comprises an offset printing machine body, a support plate a, a support plate b, a rotating shaft a and a rotating shaft b; the supporting plate a is arranged on the outer side surface of the feeding table, a sliding plate is arranged on the supporting plate a in a sliding mode, and a supporting rod is arranged on the sliding plate in a rotating mode; the supporting plate b is connected with the supporting rod; the rotary shaft a and the rotary shaft b are arranged side by side and rotatably arranged on the supporting plate b, the rotary shaft a is perpendicular to the feeding direction, the rotary shaft a is coaxial with the supporting rod, the rotary shaft a and the rotary shaft b are respectively provided with the roller a and the roller b, the roller b is positioned between a feeding port of the offset press body and the roller a, the distance between the roller b and the feeding placing plate is smaller than the distance between the roller a and the feeding placing plate, and the supporting plate b is provided with a power assembly for driving the rotary shaft a and the rotary shaft b to synchronously and reversely rotate. The utility model discloses in, the packing is evened up when pressurized to eliminate the fold, improve the offset printing quality.

Description

Offset press

Technical Field

The utility model relates to a printing field especially relates to an offset press.

Background

Color printing is a technique of transferring ink to the surface of a material such as paper, fabric, or leather by performing processes such as plate making, inking, and pressing on an original such as characters, pictures, or photographs, thereby mass-transferring the contents of the original. At present, the color printing generally adopts the flat printing, such as an offset printing machine. During printing, the printing pattern is first printed on the rubber cylinder from the printing plate and then transferred to the printed matter by the rubber cylinder.

Chinese patent with publication number CN214727232U discloses an offset press for color printing packaging, which is provided with secondary driving wheels, first idler wheels and second idler wheels, so that the packaging needing offset printing can be conveniently pressed by workers, and the phenomenon that the offset printing results generate folds due to the fact that the packaging is not flat enough is avoided, thereby causing unnecessary loss and influencing the normal use of the workers.

However, the above-mentioned known solutions have the following disadvantages: the first roller and the second roller have the same rolling direction, only simple pressure can be applied to the package, the package is folded before the plate is placed, the fold cannot be eliminated after the direct pressure is applied, and the fold can be eliminated only by stretching the package due to the tension force towards two sides at the fold.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the purpose is to the packing that exists among the background art carry out the problem that can not solve the packing fold that flattens before the color printing, provides an offset press that can eliminate the packing fold before the offset press.

The technical scheme of the utility model: an offset press comprises an offset press body, wherein a feeding table and a discharging table are respectively arranged on two sides of the offset press body, and a feeding placing plate is arranged on the feeding table; the device also comprises a supporting plate a, a supporting plate b, a rotating shaft a and a rotating shaft b;

the supporting plate a is vertically arranged on the outer side surface of the feeding table, a sliding plate is arranged on the end surface of the supporting plate a facing the feeding table in a sliding mode along the vertical direction, a lifting assembly for driving the sliding plate to move up and down is arranged on the feeding table, and a supporting rod is rotatably arranged on the sliding plate; the supporting plate b is connected with the supporting rod, and a limiting component for limiting the rotation of the supporting plate b is arranged on the supporting plate b; the rotary shaft a and the rotary shaft b are arranged side by side and rotatably arranged on the supporting plate b, the rotary shaft a is perpendicular to the feeding direction, the rotary shaft a is coaxial with the supporting rod, the rotary shaft a and the rotary shaft b are respectively provided with the roller a and the roller b, the roller b is positioned between a feeding port of the offset press body and the roller a, the distance between the roller b and the feeding placing plate is smaller than the distance between the roller a and the feeding placing plate, and the supporting plate b is provided with a power assembly for driving the rotary shaft a and the rotary shaft b to synchronously and reversely rotate.

Preferably, the lifting assembly comprises a slide rail and a screw rod a; the slide rail is vertically arranged on the support plate a, the slide rail is provided with a plurality of groups, a plurality of groups of chutes for the slide rail to penetrate through are formed in the slide plate, threaded holes are vertically formed in the slide plate, the screw rod a is matched with the threaded holes, the bottom of the screw rod a is rotatably connected with the feeding table, and the top of the screw rod a penetrates through the threaded holes and is provided with a knob.

Preferably, the limiting assembly comprises a screw b and a locking nut; an arc-shaped groove is formed in the supporting plate b, and the circle center of the arc-shaped groove is located on the axis of the supporting rod; the screw rod b is arranged on the sliding plate and penetrates through the arc-shaped groove; and the locking nut is matched with the screw rod b and is attached to the supporting plate b.

Preferably, the power assembly comprises a motor and a gear; the motor is arranged on the supporting plate b, and an output shaft of the motor is connected with the rotating shaft a; the gears are arranged in two groups, the two groups of gears are respectively arranged on the rotating shaft a and the rotating shaft b, and the two groups of gears are meshed.

Preferably, the rotation speed of the gear on the rotating shaft a is less than that of the gear on the rotating shaft b.

Preferably, the device also comprises a support frame, an electromagnet, a support plate c and a bearing; the supporting frame is arranged on the side surface of the feeding table, and the supporting frame and the supporting plate a are respectively positioned on two sides of the feeding table; the electromagnet is arranged on the end face, facing the rotating shaft a, of the support frame; the supporting plate c is magnetically attracted with the electromagnet, two groups of blind holes are formed in the supporting plate c, and the suspended ends of the rotating shaft a and the rotating shaft b are respectively inserted into the two groups of blind holes; the bearings are arranged in two groups, the two groups of bearings are respectively arranged on the rotating shaft a and the rotating shaft b, and the peripheral walls of the two groups of bearings are respectively attached to the walls of the two groups of blind holes.

Preferably, the bearing is a non-magnetic bearing.

Compared with the prior art, the utility model discloses following profitable technological effect has: roller an and roller b are synchronous but reverse rotation, and is concrete, and roller b anticlockwise rotation drives the packing that needs the color printing and carries forward, and roller a clockwise rotation provides a decurrent power of dragging for the color printing packing, is evened up when making the packing pressurized to eliminate the fold, improve offset printing quality.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a top view of FIG. 1;

fig. 3 is a rear view of fig. 1.

Reference numerals are as follows: 1. an offset printing machine body; 2. a feeding table; 3. a discharging table; 4. a feeding placing plate; 5. a support plate a; 6. a slide plate; 7. a slide rail; 8. a screw rod a; 9. a support plate b; 10. an arc-shaped slot; 11. a motor; 12. a rotating shaft a; 13. a roller a; 14. a rotating shaft b; 15. a roller b; 16. a gear; 17. a screw b; 18. locking the nut; 19. a support frame; 20. an electromagnet; 21. a support plate c; 22. and a bearing.

Detailed Description

Example one

As shown in fig. 1-2, the offset printing machine of the present invention comprises an offset printing machine body 1, a feeding table 2 and a discharging table 3 are respectively disposed on two sides of the offset printing machine body 1, and a feeding placing plate 4 is disposed on the feeding table 2; the device also comprises a supporting plate a5, a supporting plate b9, a rotating shaft a12 and a rotating shaft b14;

the supporting plate a5 is vertically arranged on the outer side surface of the feeding table 2, the sliding plate 6 is arranged on the end surface, facing the feeding table 2, of the supporting plate a5 in a sliding mode along the vertical direction, the lifting assembly for driving the sliding plate 6 to move up and down is arranged on the feeding table 2, and the supporting rod is arranged on the sliding plate 6 in a rotating mode; the supporting plate b9 is connected with the supporting rod, and a limiting component for limiting the rotation of the supporting plate b9 is arranged on the supporting plate b 9; the rotary shaft a12 and the rotary shaft b14 are arranged in parallel and rotatably arranged on the supporting plate b9, the rotary shaft a12 is perpendicular to the feeding direction, the rotary shaft a12 is coaxial with the supporting rod, the rotary shaft a12 and the rotary shaft b14 are respectively provided with the roller a13 and the roller b15, the roller b15 is positioned between a feeding port of the offset press body 1 and the roller a13, the distance between the roller b15 and the feeding placing plate 4 is smaller than the distance between the roller a13 and the feeding placing plate 4, and the supporting plate b9 is provided with a power assembly for driving the rotary shaft a12 and the rotary shaft b14 to synchronously and reversely rotate.

In this embodiment, roller a13 and roller b15 are synchronous but reverse rotation, and specifically, roller b15 anticlockwise rotation drives the packing that needs the color printing and carries forward, and roller a13 clockwise rotation provides a backward pulling force for the color printing packing, is evened out when making the packing pressurized to eliminate the fold, improve offset printing quality. The friction between the roller a13 and the roller b15 and the package is adjusted through the lifting assembly and the limiting assembly, and only the extrusion force between the roller b15 and the package needs to be kept larger than that between the roller a13 and the package, namely the lowest point of the roller b15 is lower than that of the roller a 13.

Example two

As shown in fig. 1, compared with the first embodiment, the present invention provides an offset printing machine, in which the lifting assembly includes a slide rail 7 and a screw a8; the vertical setting of slide rail 7 is on backup pad a5, and slide rail 7 sets up the multiunit, is provided with the spout that the multiunit supplied slide rail 7 to pass on the slide 6, and the vertical screw hole that sets up on the slide 6, screw rod an 8 and screw hole cooperation, screw rod an 8 bottom are rotated with feed table 2 and are connected, and screw hole and setting knob are passed at screw rod an 8 top. The knob is rotated to drive the sliding plate 6 to move up and down, and the operation is simple and convenient.

As shown in fig. 1-2, the limiting assembly comprises a screw b17 and a lock nut 18; an arc-shaped groove 10 is formed in the supporting plate b9, and the circle center of the arc-shaped groove 10 is located on the axis of the supporting rod; the screw b17 is arranged on the sliding plate 6, and the screw b17 penetrates through the arc-shaped groove 10; and a locking nut 18 is matched with the screw b17, and the locking nut 18 is attached to the support plate b 9. The support plate b9 can be freely rotated by loosening the lock nut 18, and after the support plate b9 is tightened, the support plate b can be fixed and can not rotate any more.

EXAMPLE III

As shown in fig. 2, compared with the first embodiment, the power assembly of the offset printing machine of the present invention includes a motor 11 and a gear 16; the motor 11 is arranged on the supporting plate b9, and an output shaft of the motor 11 is connected with the rotating shaft a 12; two sets of gears 16 are arranged, two sets of gears 16 are respectively arranged on the rotating shaft a12 and the rotating shaft b14, and the two sets of gears 16 are meshed. The rotation speed of the gear 16 on the rotating shaft a12 is less than that of the gear 16 on the rotating shaft b 14.

In this embodiment, motor 11 drives pivot a12 and rotates, drives pivot b14 antiport through two sets of gears 16 simultaneously, and roller a13 and roller b15 are synchronous but antiport promptly, and is specific, and roller b15 anticlockwise rotation drives the packing that needs the color printing and carries forward, and roller a13 clockwise rotation provides a decurrent power of pulling for the color printing packing, is evened when making the packing pressurized to eliminate the fold.

Example four

As shown in fig. 3, compared with the first embodiment, the offset printing machine of the present invention further includes a supporting frame 19, an electromagnet 20, a supporting plate c21, and a bearing 22; the supporting frame 19 is arranged on the side surface of the feeding table 2, and the supporting frame 19 and the supporting plate a5 are respectively positioned on two sides of the feeding table 2; the electromagnet 20 is arranged on the end surface of the support frame 19 facing the rotating shaft a 12; the support plate c21 is magnetically attracted with the electromagnet 20, two groups of blind holes are arranged on the support plate c21, and the suspended ends of the rotating shaft a12 and the rotating shaft b14 are respectively inserted into the two groups of blind holes; two sets of bearings 22 are arranged, the two sets of bearings 22 are respectively arranged on the rotating shaft a12 and the rotating shaft b14, the peripheral walls of the two sets of bearings 22 are respectively attached to the walls of the two sets of blind holes, and the bearings 22 are non-magnetic bearings.

In this embodiment, the supporting plate c21 and the bearing 22 provide a rotary support for the suspended ends of the rotating shaft a12 and the rotating shaft b14, so that the structural work is more stable, the supporting plate c21 is fixed only by electrifying the electromagnet 20, and when the electromagnet 20 is powered off, the supporting plate c21 can freely move or rotate, so that the positions of the roller a13 and the roller b15 can be adjusted conveniently.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto, and various changes can be made without departing from the gist of the present invention within the scope of knowledge possessed by those skilled in the art.

Claims

1. An offset press comprises an offset press body (1), wherein a feeding table (2) and a discharging table (3) are respectively arranged on two sides of the offset press body (1), and a feeding placing plate (4) is arranged on the feeding table (2); the device is characterized by also comprising a supporting plate a (5), a supporting plate b (9), a rotating shaft a (12) and a rotating shaft b (14);

the supporting plate a (5) is vertically arranged on the outer side surface of the feeding table (2), the sliding plate (6) is arranged on the end surface, facing the feeding table (2), of the supporting plate a (5) in a sliding mode along the vertical direction, a lifting assembly for driving the sliding plate (6) to move up and down is arranged on the feeding table (2), and a supporting rod is arranged on the sliding plate (6) in a rotating mode; the supporting plate b (9) is connected with the supporting rod, and the supporting plate b (9) is provided with a limiting component for limiting the rotation of the supporting plate b; the rotary shaft a (12) and the rotary shaft b (14) are arranged in parallel and rotatably arranged on the supporting plate b (9), the rotary shaft a (12) is perpendicular to the feeding direction, the rotary shaft a (12) is coaxial with the supporting rod, the rotary shaft a (12) and the rotary shaft b (14) are respectively provided with the roller a (13) and the roller b (15), the roller b (15) is positioned between the feeding hole of the offset press body (1) and the roller a (13), the distance between the roller b (15) and the feeding placing plate (4) is smaller than that between the roller a (13) and the feeding placing plate (4), the supporting plate b (9) is provided with a power assembly for driving the rotary shaft a (12) and the rotary shaft b (14) to synchronously and reversely rotate.

2. Offset printing machine according to claim 1, characterized in that the lifting assembly comprises a slide (7) and a screw a (8); the vertical setting of slide rail (7) is on backup pad a (5), and slide rail (7) set up the multiunit, is provided with the spout that multiunit confession slide rail (7) passed on slide (6), and the vertical screw hole that sets up on slide (6), screw rod a (8) and screw hole cooperation, screw rod a (8) bottom are connected with feed table (2) rotation, and screw hole and setting knob are passed at screw rod a (8) top.

3. Offset printing machine according to claim 1, characterized in that the stop assembly comprises a screw b (17) and a lock nut (18); an arc-shaped groove (10) is formed in the supporting plate b (9), and the circle center of the arc-shaped groove (10) is located on the axis of the supporting rod; the screw b (17) is arranged on the sliding plate (6), and the screw b (17) penetrates through the arc-shaped groove (10); and a locking nut (18) is matched with the screw b (17), and the locking nut (18) is attached to the support plate b (9).

4. Offset printing machine according to claim 1, characterized in that the power assembly comprises a motor (11) and a gear (16); the motor (11) is arranged on the supporting plate b (9), and an output shaft of the motor (11) is connected with the rotating shaft a (12); two groups of gears (16) are arranged, the two groups of gears (16) are respectively arranged on the rotating shaft a (12) and the rotating shaft b (14), and the two groups of gears (16) are meshed.

5. Offset printing machine according to claim 4, characterized in that the rotational speed of the gear wheel (16) on the shaft a (12) is lower than the rotational speed of the gear wheel (16) on the shaft b (14).

6. The offset printing machine according to claim 1, further comprising a support frame (19), an electromagnet (20), a support plate c (21), and a bearing (22); the supporting frame (19) is arranged on the side surface of the feeding table (2), and the supporting frame (19) and the supporting plate a (5) are respectively positioned on two sides of the feeding table (2); the electromagnet (20) is arranged on the end face, facing the rotating shaft a (12), of the support frame (19); a support plate c (21) is magnetically attracted with the electromagnet (20), two groups of blind holes are formed in the support plate c (21), and the suspended ends of the rotating shaft a (12) and the rotating shaft b (14) are respectively inserted into the two groups of blind holes; two sets of bearings (22) are arranged, the two sets of bearings (22) are respectively arranged on the rotating shaft a (12) and the rotating shaft b (14), and the peripheral walls of the two sets of bearings (22) are respectively attached to the wall of the two sets of blind holes.

7. Offset printing machine according to claim 6, characterized in that the bearing (22) is a non-magnetic bearing.