CN215321294U

CN215321294U - Six-color large-bowl offset press with large printing caliber range

Info

Publication number: CN215321294U
Application number: CN202121538459.9U
Authority: CN
Inventors: 李欣
Original assignee: Guangshui Light Industrial Machinery Co ltd
Current assignee: Guangshui Light Industrial Machinery Co ltd
Priority date: 2021-07-07
Filing date: 2021-07-07
Publication date: 2021-12-28
Anticipated expiration: 2031-07-07

Abstract

The utility model discloses a six-color large-bowl offset press with a large printing caliber range, which comprises a fixed base, wherein the upper surface of the fixed base is fixedly connected with an offset printing frame and a fixed plate, the inner wall of the offset printing frame is rotatably connected with an offset printing disc, one side of the fixed plate is fixedly connected with a safety plate, the front side of the safety plate is provided with a avoidance hole, and the front side of the safety plate is fixedly connected with an L-shaped fixed frame. According to the utility model, the rotary rod is arranged to drive the first straight gear to rotate, the first straight gear is driven to rotate by the rotation of the first straight gear, the first rack, the first slide bar and the first guide support bar are arranged to drive the left half support disc to move by the rotation of the first straight gear, and the second rack, the second slide bar and the second guide support bar are arranged to drive the right half support disc to move towards the opposite direction of the left half support disc by the rotation of the second straight gear, so that the printing and fixing requirements of large bowls with different bowl diameters are met, the fixing head does not need to be replaced, and time and labor are saved.

Description

Six-color large-bowl offset press with large printing caliber range

Technical Field

The application relates to the technical field of offset presses, in particular to a six-color large-bowl offset press with a large printing caliber range.

Background

The offset press is one kind of lithographic printing machine, and during printing, the printed image and text is first printed onto the blanket cylinder from the printing plate and then transferred to the object via the blanket cylinder.

In the printing process of the existing large bowl offset press, the fixing head of the contact surface of the existing large bowl cannot be adjusted according to the diameter of the bowl opening, when large bowls with different bowl opening sizes are required to be offset-printed, the fixing head needs to be replaced, and meanwhile, in the high-speed rotation process of the large bowl, due to the centrifugal effect, the large bowl can fall off from the large bowl offset press and break, so that the cost is increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a six-color large-bowl offset press with a large printing caliber range, which aims to solve the problems in the background technology.

The embodiment of the application adopts the following technical scheme:

a six-color large-bowl offset press with a large printing caliber range comprises a fixed base, wherein the upper surface of the fixed base is fixedly connected with an offset printing frame and a fixed plate, the inner wall of the offset printing frame is rotatably connected with an offset printing disc, one side of the fixed plate is fixedly connected with a safety plate, the front of the safety plate is provided with an avoidance hole, the front of the safety plate is fixedly connected with an L-shaped fixed frame, one end of the L-shaped fixed frame is fixedly connected with a hydraulic telescopic rod, the output end of the hydraulic telescopic rod penetrates through the avoidance hole and is fixedly connected with a sucker, one side of the fixed plate is fixedly connected with a first motor, the output end of the first motor penetrates through one side of the fixed plate and is fixedly connected with a first rotating shaft, one end of the first rotating shaft is fixedly connected with a rotary table, the surface of the rotary table is fixedly connected with a first fixed rod, and a movable chamber is arranged in the rotary table, the inner wall fixedly connected with fixed block of activity room, one side fixedly connected with second motor of fixed block, the output fixedly connected with rotary rod of second motor, the one end fixedly connected with expansion supporting mechanism of rotary rod, expansion supporting mechanism's surface is provided with big bowl, the surface of rotary rod is rotated and is connected with the tight fixed establishment of clamp of the tight big bowl of clamp.

Preferably, the expansion supporting mechanism includes fixed connection in the first spur gear of rotary rod one end, the fixed surface of first dead lever is connected with first guide support pole, second guide support pole, locating lever, one side sliding connection of first guide support pole has first slide bar, the first rack of one end fixedly connected with of first slide bar, the one end fixedly connected with left half supporting disk of first rack, one side sliding connection of second guide support pole has the second slide bar, the one end fixedly connected with second rack of second slide bar, the one end fixedly connected with right half supporting disk of second rack, the locating lever rotates and is connected with the second spur gear.

Preferably, the first spur gear is engaged with the first rack, the second spur gear is engaged with the second rack, and the first spur gear is engaged with the second spur gear.

Preferably, the clamping and fixing mechanism comprises a first bevel gear which is rotatably connected to the surface of the rotating rod, a first through hole is formed in the surface of the first fixing rod, a first supporting rod is fixedly connected to the surface of the first fixing rod, a limiting plate is fixedly connected to the lower surface of the first supporting rod, a second through hole is formed in one side of the limiting plate, a second rotating shaft is rotatably connected to the inner wall of the second through hole, a second bevel gear is fixedly connected to one end of the second rotating shaft, the second bevel gear is meshed with the first bevel gear, a third bevel gear is fixedly connected to the other end of the second rotating shaft, and a second supporting rod is fixedly connected to one side of the first supporting rod.

Preferably, one end of the second supporting rod is fixedly connected with a fixing head, the surface of the fixing head is fixedly connected with a fixing supporting rod, one end of the fixed supporting rod is rotatably connected with a rotating shaft, the surface of the rotating shaft is fixedly connected with a first connecting rod, one end of the first connecting rod is fixedly connected with a clamping plate, one side of the first connecting rod is rotatably connected with a second connecting rod, one end of the second connecting rod is rotatably connected with a positioning block, the surface of the positioning block is rotatably connected with a screw rod, the lower surface of the second supporting rod is fixedly connected with a third supporting rod, the bottom end of the third supporting rod is connected with a third straight gear in a sliding way, a third through hole is formed in the upper surface of the third straight gear, the screw rod rotates in the third through hole, one end of the screw rod is fixedly connected with a rotating disc, and the upper surface of the rotating disc is fixedly connected with a third fixing rod.

Preferably, a fourth through hole is formed in the upper surface of the third spur gear, and the surface of the third fixing rod is connected with the inner wall of the fourth through hole in a sliding mode.

Preferably, the upper surface of the fixed base is fixedly connected with a feeding mechanism, and the feeding mechanism drives the large bowl to perform automatic feeding.

The embodiment of the application adopts at least one technical scheme which can achieve the following beneficial effects:

one of which, through setting up the rotary rod, drive first spur gear and rotate, rotate through first spur gear and drive the rotation of second spur gear, through being provided with first rack, first slide bar, first direction bracing piece, make first spur gear rotate and drive the motion of left half supporting disk, through being provided with the second rack, the second slide bar, second direction bracing piece, make second spur gear rotate and drive right half supporting disk and move towards the opposite direction in left half supporting disk, after laminating with the surface of big bowl, the expansion of laminating is carried out to the inner wall of big bowl, it is fixed to form, according to first spur gear, second spur gear pivoted angle, adjust left half supporting disk, distance between the right half supporting disk, adapt to the fixed demand of big bowl printing of different bowl footpath sizes, need not change the fixed head, time saving and labor saving.

Secondly, the first bevel gear is driven to rotate by the rotation of the rotating rod through the arrangement of the first bevel gear, and the second bevel gear is driven to rotate by the arrangement of the second rotating shaft, the second bevel gear and the third bevel gear, so that the first bevel gear rotates to drive the second bevel gear to rotate, the second bevel gear rotates to drive the third bevel gear to rotate synchronously, the third bevel gear is driven to rotate by the third straight gear, and the third fixing rod is arranged, so that the third straight gear rotates to drive the rotating disc to rotate, the rotating disc rotates to drive the screw to rotate, the screw rotates to drive the positioning block to move, the positioning block moves to drive the second connecting rod to move, the second connecting rod moves to drive the first connecting rod to move, the first connecting rod moves to drive the clamping plate to get close to or get away from, thereby realizing the clamping and fixing functions and solving the problem that the big bowl can fall off and break from the big bowl offset press due to the centrifugal action in the high-speed rotation process of the big bowl.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a diagram: the utility model is a schematic three-dimensional structure;

FIG. 2 is a diagram of: the partial sectional structure of the utility model is schematically shown;

FIG. 3 is a diagram of: the utility model discloses a three-dimensional structure schematic diagram of an expansion supporting mechanism;

FIG. 4 is a diagram of: the enlarged structure of the utility model at a in fig. 3 is schematically illustrated.

In the figure: 1. a fixed base; 2. an offset printing frame; 3. offset printing of the disc; 4. a fixing plate; 5. a hydraulic telescopic rod; 6. a suction cup; 7. a security pane; 8. a first motor; 9. a feeding mechanism; 10. a first rotating shaft; 11. a turntable; 12. a big bowl; 13. a first fixing lever; 14. an expansion support mechanism; 140. a right half support disc; 141. a first straight gear; 142. a second spur gear; 143. a left half support disc; 144. a first rack; 145. a first slide bar; 146. a first guide support bar; 147. a second guide support bar; 148. a second slide bar; 149. a second rack; 15. a clamping and fixing mechanism; 1501. a first bevel gear; 1502. a second bevel gear; 1503. a third spur gear; 1504. a first link; 1505. rotating the disc; 1506. a third fixing bar; 1507. a third bevel gear; 1508. fixing the support rod; 1509. a fixed head; 1510. a first support bar; 1511. a rotating shaft; 1512. a second link; 1513. a second rotation shaft; 1514. a second support bar; 1515. a third support bar; 1516. a limiting plate; 1517. a clamping plate; 1518. positioning blocks; 1519. a screw; 16. a fixed block; 17. a second motor; 18. the rod is rotated.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The technical solutions provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings.

Referring to fig. 1-4, the present invention provides a technical solution of a six-color large bowl offset press with a large printing caliber range:

a six-color large-bowl offset press with a large printing caliber range comprises a fixed base 1, wherein the upper surface of the fixed base 1 is fixedly connected with an offset printing frame 2 and a fixed plate 4, the inner wall of the offset printing frame 2 is connected with an offset printing disc 3 in a rotating manner, one side of the fixed plate 4 is fixedly connected with a safety plate 7, the front of the safety plate 7 is provided with an avoidance hole, the front of the safety plate 7 is fixedly connected with an L-shaped fixed frame, one end of the L-shaped fixed frame is fixedly connected with a hydraulic telescopic rod 5, the output end of the hydraulic telescopic rod 5 penetrates through the avoidance hole and is fixedly connected with a sucker 6, one side of the fixed plate 4 is fixedly connected with a first motor 8, the output end of the first motor 8 penetrates through one side of the fixed plate 4 and is fixedly connected with a first rotating shaft 10, one end of the first rotating shaft 10 is fixedly connected with a rotating disc 11, the surface of the rotating disc 11 is fixedly connected with a first fixed rod 13, and a movable chamber is arranged inside the rotating disc 11, the inner wall fixedly connected with fixed block 16 of activity room, one side fixedly connected with second motor 17 of fixed block 16, the output fixedly connected with rotary rod 18 of second motor 17, the one end fixedly connected with expansion supporting mechanism 14 of rotary rod 18, the surface of expansion supporting mechanism 14 is provided with big bowl 12, the surface rotation of rotary rod 18 is connected with the tight fixed establishment 15 of clamp tight big bowl 12.

Specifically, through being provided with expansion supporting mechanism 14, can adjust according to the not equidimension of bowl mouth, need not to change the fixed head to satisfy the big bowl 12 demand of equidimension not, through being provided with clamping fixture 15, prevent that big bowl 12 from high-speed rotatory in-process, because centrifugal action, big bowl 12 can be followed and drop and break into pieces on the big bowl offset press, causes the increase of cost.

In this embodiment, as shown in fig. 2 to 3, the expansion supporting mechanism 14 includes a first spur gear 141 fixedly connected to one end of the rotating rod 18, a first guiding supporting rod 146, a second guiding supporting rod 147 and a positioning rod are fixedly connected to a surface of the first fixing rod 13, a first sliding rod 145 is slidably connected to one side of the first guiding supporting rod 146, a first rack 144 is fixedly connected to one end of the first sliding rod 145, a left half supporting plate 143 is fixedly connected to one end of the first rack 144, a second sliding rod 148 is slidably connected to one side of the second guiding supporting rod 147, a second rack 149 is fixedly connected to one end of the second sliding rod 148, a right half supporting plate 140 is fixedly connected to one end of the second rack 149, and the positioning rod is rotatably connected to the second spur gear 142.

The first spur gear 141 is engaged with the first rack 144, the second spur gear 142 is engaged with the second rack 149, and the first spur gear 141 and the second spur gear 142 are engaged.

Specifically, the rotating rod 18 is arranged to drive the first spur gear 141 to rotate, the first spur gear 141 is arranged to drive the second spur gear 142 to rotate, the left half supporting plate 143 is fixedly supported by the first rack 144, the first sliding rod 145 and the first guide supporting rod 146, the first spur gear 141 is arranged to rotate to drive the first rack 144 to move, the left half supporting plate 143 is arranged to move by the first rack 144, the right half supporting plate 140 is fixedly supported by the second rack 149, the second rack 149 is arranged to move, the second rack 149 is arranged to drive the right half supporting plate 140 to move in a direction opposite to the left half supporting plate 143, and after the second rack 149 is attached to the surface of the large bowl 12, the inner wall of the large bowl 12 is attached and expanded, the fixing is formed, and the distance between the left half supporting plate 143 and the right half supporting plate 140 is adjusted according to the rotating angles of the first straight gear 141 and the second straight gear 142, so as to meet the printing and fixing requirements of large bowls 12 with different bowl diameters.

In this embodiment, as shown in fig. 3 to 4, the clamping and fixing mechanism 15 includes a first bevel gear 1501 rotatably connected to the surface of the rotating rod 18, a first through hole is formed in the surface of the first fixing rod 13, a first supporting rod 1510 is fixedly connected to the surface of the first fixing rod 13, a limiting plate 1516 is fixedly connected to the lower surface of the first supporting rod 1510, a second through hole is formed in one side of the limiting plate 1516, a second rotating shaft 1513 is rotatably connected to the inner wall of the second through hole, a second bevel gear 1502 is fixedly connected to one end of the second rotating shaft 1513, the second bevel gear 1502 is engaged with the first bevel gear 1501, a third bevel gear 1507 is fixedly connected to the other end of the second rotating shaft 1513, and a second supporting rod 1514 is fixedly connected to one side of the first supporting rod 1510.

One end of the second support rod 1514 is fixedly connected with a fixing head 1509, the surface of the fixing head 1509 is fixedly connected with a fixing support rod 1508, one end of the fixing support rod 1508 is rotatably connected with a rotating shaft 1511, the surface of the rotating shaft 1511 is fixedly connected with a first connecting rod 1504, one end of the first connecting rod 1504 is fixedly connected with a clamping plate 1517, one side of the first connecting rod 1504 is rotatably connected with a second connecting rod 1512, one end of the second connecting rod 1512 is rotatably connected with a positioning block 1518, the surface of the positioning block 1518 is rotatably connected with a screw 1519, the lower surface of the second support rod 1514 is fixedly connected with a third support rod 1515, the bottom end of the third support rod 1515 is slidably connected with a third spur gear 1503, the upper surface of the third spur gear 1503 is provided with a third through hole, the screw 1519 rotates in the third through hole, one end of the screw 1519 is fixedly connected with a rotating disc 1505, and the upper surface of the rotating disc 1506 is fixedly connected with a third fixing rod 1506.

A fourth through hole is formed in the upper surface of the third spur gear 1503, and the surface of the third fixing rod 1506 is slidably connected to the inner wall of the fourth through hole.

Specifically, by providing a first bevel gear 1501, a rotating rod 18 rotates to drive the first bevel gear 1501 to rotate, by providing a second rotating shaft 1513, a second bevel gear 1502 and a third bevel gear 1507, the first bevel gear 1501 rotates to drive the second bevel gear 1502 to rotate, the second bevel gear 1502 rotates to synchronously drive the third bevel gear 1507 to rotate, by providing a third spur gear 1503, the third bevel gear 1507 rotates to drive the third spur gear to rotate, by providing a first supporting rod 1510, the second supporting rod 1514 is fixed, by providing a limiting plate 1516, the second rotating shaft 1513 is fixed, by providing a second supporting rod 1514, the fixing head 1509 is fixed, by providing a third fixing rod 1506, the third spur gear 1503 rotates to drive a rotating disc 1503 to rotate, the rotating disc rotates to drive a screw 1519 to rotate, the screw 1519 rotates to drive a positioning block 1518 to move, the movement of locating piece 1518 drives the motion of second connecting rod 1512, and the motion of second connecting rod 1512 drives the motion of first connecting rod 1504, supports fixedly to first connecting rod 1504 through setting up fixed support bar 1508, axis of rotation 1511, and the motion of first connecting rod 1504 drives being close to or keeping away from of grip block 1517 to the realization presss from both sides tight fixed function.

In this embodiment, as shown in fig. 1, a feeding mechanism 9 is fixedly connected to the upper surface of the fixed base 1, and the feeding mechanism 9 moves to drive the large bowl 12 to perform automatic feeding.

Specifically, the automatic feeding function is realized by arranging the feeding mechanism 9.

The working principle is as follows: when the six-color large bowl offset press with a large printing caliber range is used, a user firstly places a large bowl 12 on a feeding mechanism 9, then starts a first motor 8, an output end of the first motor 8 drives a first rotating shaft 10 to rotate, the first rotating shaft 10 drives a rotating disc 11 to rotate, the rotating disc 11 drives an expansion supporting mechanism 14 to rotate to a position corresponding to the large bowl 12, then starts the feeding mechanism 9, sleeves the large bowl 12 on the surface of the expansion supporting mechanism 14, starts a second motor 17, the second motor 17 drives a first straight gear 141 to rotate, the first straight gear 141 drives a second straight gear 142 to rotate, the first straight gear 141 is meshed with a first rack 144 to drive a left half supporting disc 143 to move, the second straight gear 142 is meshed with a second rack 149 to drive a right half supporting disc 140 to move towards a direction opposite to the left half supporting disc 143, and after the second straight gear is jointed with the surface of the large bowl 12, the inner walls of the large bowls 12 are attached and expanded to form fixation, the distance between the left half supporting plate 143 and the right half supporting plate 140 is adjusted according to the rotating angles of the first straight gear 141 and the second straight gear 142 to meet the printing and fixing requirements of the large bowls 12 with different bowl diameters, meanwhile, the second motor 17 rotates and drives the first bevel gear 1501 to rotate, the first bevel gear 1501 drives the second bevel gear 1502 to rotate, the second bevel gear 1502 rotates to drive the third bevel gear 1507 to rotate, the third bevel gear 1507 rotates to drive the third straight gear 1503 to rotate, the third straight gear 1503 rotates to drive the third fixing rod 1506 to slide, the third fixing rod 1506 slides to drive the rotating disc 1505 to rotate, the rotating disc 1505 rotates to drive the screw 1519 to rotate to drive the positioning block 1518 to move, so that the first connecting rod 1504 is controlled, two ends of the first connecting rod 1504 are close to each other, and the bowl mouth of the large bowls 12 is clamped and fixed, the large bowl 12 is prevented from sliding under the action of the rotation and centrifugation of the offset press, after the rotation surface of the large bowl 12 contacts the surface of the offset printing disc 3 for offset printing, the second motor 17 moves reversely, so that the pair of first connecting rods 1504 are mutually far away, the hydraulic telescopic rod 5 drives the suction disc 6 to demold and take out from the surfaces of the left half supporting disc 143 and the right half supporting disc 140, and the whole process is completed.

It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. The utility model provides a big bowl offset press of six colours that printing bore scope is big, includes unable adjustment base (1), its characterized in that: the upper surface of the fixed base (1) is fixedly connected with an offset printing frame (2) and a fixed plate (4), the inner wall of the offset printing frame (2) is connected with an offset printing disc (3) in a rotating manner, one side of the fixed plate (4) is fixedly connected with a safety plate (7), a avoiding hole is formed in the front of the safety plate (7), an L-shaped fixed frame is fixedly connected with the front of the safety plate (7), one end of the L-shaped fixed frame is fixedly connected with a hydraulic telescopic rod (5), the output end of the hydraulic telescopic rod (5) penetrates through the avoiding hole and is fixedly connected with a sucker (6), one side of the fixed plate (4) is fixedly connected with a first motor (8), the output end of the first motor (8) penetrates through one side of the fixed plate (4) and is fixedly connected with a first rotating shaft (10), one end of the first rotating shaft (10) is fixedly connected with a turntable (11), the utility model discloses a rotary table, including the first dead lever of fixed surface of carousel (11) (13), the inside of carousel (11) is provided with the activity room, the inner wall fixedly connected with fixed block (16) of activity room, one side fixedly connected with second motor (17) of fixed block (16), the output fixedly connected with rotary rod (18) of second motor (17), the one end fixedly connected with expansion supporting mechanism (14) of rotary rod (18), the surface of expansion supporting mechanism (14) is provided with big bowl (12), the surface rotation of rotary rod (18) is connected with the tight fixed establishment (15) of clamp tight big bowl (12).

2. The six-color large bowl offset printing press with a large print aperture range of claim 1, wherein: the expansion supporting mechanism (14) comprises a first straight gear (141) fixedly connected with one end of the rotating rod (18), the surface of the first fixed rod (13) is fixedly connected with a first guide supporting rod (146), a second guide supporting rod (147) and a positioning rod, one side of the first guide support rod (146) is connected with a first slide bar (145) in a sliding way, one end of the first sliding rod (145) is fixedly connected with a first rack (144), one end of the first rack (144) is fixedly connected with a left half supporting plate (143), one side of the second guide supporting rod (147) is connected with a second sliding rod (148) in a sliding way, one end of the second sliding rod (148) is fixedly connected with a second rack (149), one end of the second rack (149) is fixedly connected with a right half supporting disc (140), and the positioning rod is rotatably connected with a second straight gear (142).

3. The six-color large bowl offset printing press with a large printing caliber range according to claim 2, wherein: the first straight gear (141) is meshed with the first rack (144), the second straight gear (142) is meshed with the second rack (149), and the first straight gear (141) and the second straight gear (142) are meshed.

4. The six-color large bowl offset printing press with a large print aperture range of claim 1, wherein: the clamping and fixing mechanism (15) comprises a first bevel gear (1501) which is rotationally connected with the surface of the rotating rod (18), a first through hole is arranged on the surface of the first fixed rod (13), a first supporting rod (1510) is fixedly connected to the surface of the first fixed rod (13), a limit plate (1516) is fixedly connected to the lower surface of the first support rod (1510), a second through hole is formed in one side of the limit plate (1516), a second rotating shaft (1513) is rotatably connected to the inner wall of the second through hole, a second bevel gear (1502) is fixedly connected to one end of the second rotating shaft (1513), the second bevel gear (1502) is meshed with the first bevel gear (1501), the other end of the second rotating shaft (1513) is fixedly connected with a third bevel gear (1507), one side of the first supporting rod (1510) is fixedly connected with a second supporting rod (1514).

5. The six-color large bowl offset printing press with a large printing caliber range according to claim 4, wherein: one end of the second support rod (1514) is fixedly connected with a fixed head (1509), the surface of the fixed head (1509) is fixedly connected with a fixed support rod (1508), one end of the fixed support rod (1508) is rotatably connected with a rotating shaft (1511), the surface of the rotating shaft (1511) is fixedly connected with a first connecting rod (1504), one end of the first connecting rod (1504) is fixedly connected with a clamping plate (1517), one side of the first connecting rod (1504) is rotatably connected with a second connecting rod (1512), one end of the second connecting rod (1512) is rotatably connected with a positioning block (1518), the surface of the positioning block 151 (1518) is rotatably connected with a screw (1519), the lower surface of the second support rod (1514) is fixedly connected with a third support rod (1515), the bottom end of the third support rod (1515) is slidably connected with a third straight gear (1503), and a third through hole is formed in the upper surface of the third straight gear (1503), the screw rod (1519) rotates in the third through hole, one end of the screw rod (1519) is fixedly connected with a rotating disc (1505), and the upper surface of the rotating disc (1505) is fixedly connected with a third fixing rod (1506).

6. The six-color large bowl offset printing press with a large printing caliber range according to claim 5, wherein: a fourth through hole is formed in the upper surface of the third straight gear (1503), and the surface of the third fixing rod (1506) is in sliding connection with the inner wall of the fourth through hole.

7. The six-color large bowl offset printing press with a large print aperture range of claim 1, wherein: the automatic feeding device is characterized in that the upper surface of the fixed base (1) is fixedly connected with a feeding mechanism (9), and the feeding mechanism (9) drives the large bowl (12) to perform automatic feeding.