Lifting mechanism of printing machine plate roller

Abstract

The utility model discloses a lifting mechanism of a printing machine plate roller, which comprises lifting blocks arranged at two ends of the plate roller, a base is arranged below the lifting blocks, the base is fixedly connected onto a printing machine frame, a driving shaft and a lifting shaft are arranged in the base, the upper end of the lifting shaft is positioned in the lifting block, a gear is arranged on the driving shaft, and the gear is connected with the lifting shaft. The lifting shaft is provided with a rack, the gear is meshed with the rack, one end of the driving shaft is connected with a driving device, and the driving device enables the driving shaft to rotate to push the lifting shaft to ascend, so that the lifting block is pushed to ascend. The gear on the driving shaft is meshed with the rack on the lifting shaft, and the driving device is arranged to enable the driving shaft to rotate to push the lifting shaft to ascend, so that the lifting block is pushed to ascend, the plate roller is switched between a pressing state and a pressing-off state, and the plate roller pressing device further has the advantages of being simple in structure, convenient to machine, easy to assemble and high in practicability.

Description

TECHNICAL FIELD

[0001] The utility model relates to printing machine technical field, especially a kind of lifting mechanism of printing machine plate roller. BACKGROUND

[0002] Printing machine generally includes ink transfer roller, plate roller, impression roller, ink is transferred to plate roller from ink transfer roller, then is applied printing pressure by impression roller, and ink on plate roller is transferred to printing material, in use process, plate roller needs to switch between the combined pressure state of mutual contact with impression roller, ink transfer roller and the off pressure state of mutual separation with impression roller, ink transfer roller. SUMMARY

[0003] The utility model wants to solve the technical problem: provide a kind of lifting mechanism of printing machine plate roller.

[0004] To achieve the above object, the technical scheme that the utility model adopts is: a kind of lifting mechanism of printing machine plate roller, including the lifting block being set in plate roller both ends, bottom is equipped in the lifting block below, the bottom is fixedly connected on printing machine frame, drive shaft, lifting shaft are equipped in the bottom, the lifting shaft upper end is located in lifting block, gear is equipped on the drive shaft, rack is equipped on the lifting shaft, the gear and rack are engaged, one end of the drive shaft is connected with driving device, the driving device makes drive shaft rotate and push lifting shaft to ascend, to push lifting block to ascend.

[0005] The driving device includes connecting rod, piston rod, pressure cylinder, one end of the connecting rod is fixedly connected with drive shaft, the other end of the connecting rod is connected with one end of piston rod, the other end of piston rod is located in pressure cylinder, the pressure cylinder is connected on bottom or printing machine frame, the pressure cylinder drives piston rod telescopic and drives connecting rod to rotate, to make drive shaft rotate.

[0006] The connecting rod is equipped with the first through hole for drive shaft to pass through, the side surface of the connecting rod is equipped with the first threaded hole corresponding to the position of first through hole, the first threaded hole is screw connected with first bolt, and first bolt is clamped in first through hole, the first through hole is equipped with slot, the slot is divided into first clamping part and second clamping part, the first clamping part is equipped with the second through hole, the second clamping part is equipped with the second threaded hole, the second bolt is equipped in the second through hole, and the second bolt is screw connected with the second threaded hole, so that first clamping part and second clamping part clamp drive shaft.

[0007] The side surface of the bottom is equipped with the third through hole, the third through hole is equipped with clamping rod, and the rear end of clamping rod is equipped with clamping device, when lifting block is not lifted, the clamping device makes clamping rod top on lifting shaft, so that lifting shaft is fixed.

[0008] The clamping device is air cylinder or hydraulic cylinder.

[0009] The utility model discloses the beneficial effect has: the utility model discloses through the gear on the drive shaft and the rack on the lifting shaft meshing, and setting drive arrangement makes drive shaft rotation and promotes the lifting shaft ascending, to promote the lifting block ascending, makes the plate roll switch between the compression state and the off pressure state, the utility model discloses still have simple structure, processing is convenient and the characteristics of easy assembly, strong practicality. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 It is the structure schematic diagram of the utility model;

[0011] Figure 2 It is Figure 1 The partial section view of C-C direction;

[0012] Figure 3 It is Figure 2 The partial section view of F-F direction;

[0013] Figure 4 It is Figure 2 The section view of connecting rod of E-E direction;

[0014] Figure 5 It is the lifting state schematic diagram of the utility model. DETAILED DESCRIPTION

[0015] As Figures 1-4 Shown, a printing press plate roll 1's lifting mechanism includes setting in the plate roll 1 both ends lifting block 2, the lifting block 2 below is equipped with base 3, the base 3 fixedly connected on the printing press frame 10, the base 3 is equipped with drive shaft 4, lifting shaft 5 in, the lifting shaft 5 upper end is located in lifting block 2, the drive shaft 4 is equipped with gear 41, the lifting shaft 5 is equipped with rack 51, the gear 41 and rack 51 meshing, the drive shaft 4 one end is connected with drive arrangement, the drive arrangement makes drive shaft 4 rotation and promotes lifting shaft 5 ascending, to promote lifting block 2 ascending. As Figure 2 Shown, drive shaft 4 is connected in base 3 through two bearings 9, and the specific connecting structure can adopt the conventional structure of prior art, not limited to shown in the drawing.

[0016] The drive arrangement includes connecting rod 61, piston rod 62, pressure cylinder 63, one end of connecting rod 61 and drive shaft 4 fixed connection, the other end of connecting rod 61 and the one end of piston rod 62 are connected, the other end of piston rod 62 is located in pressure cylinder 63, the pressure cylinder 63 is connected on base 3 or printing press frame 10, the pressure cylinder 63 drive piston rod 62 telescopic and drive connecting rod 61 rotation, to make drive shaft 4 rotation. Pressure cylinder 63 can be hydraulic cylinder or air cylinder.

[0017] The connecting rod 61 is provided with a first through hole 611 through which the driving shaft 4 passes, and the side surface of the connecting rod 61 is provided with a first threaded hole 612 corresponding to the position of the first through hole 611, the first threaded hole 612 is threadedly connected with a first bolt 613, the first bolt 613 is tightly pressed against the driving shaft 4 in the first through hole 611, and the first through hole 611 is provided with a slot 614, the slot 614 divides the connecting rod 61 into a first clamping part 615 and a second clamping part 616, the first clamping part 615 is provided with a second through hole 617, the second clamping part 616 is provided with a second threaded hole 618, the second through hole 617 is provided with a second bolt 619, and the second bolt 619 is threadedly connected with the second threaded hole 618, so that the first clamping part 615 and the second clamping part 616 clamp the driving shaft 4.

[0018] The side surface of the base 3 is provided with a third through hole 31, the third through hole 31 is provided with a clamping rod 7, the rear end of the clamping rod 7 is provided with a clamping device 8, when the lifting block 2 is not lifted, the clamping device 8 makes the clamping rod 7 abut against the lifting shaft 5, so that the lifting shaft 5 is fixed, and when the lifting block 2 is lifted, the clamping device 8 makes the clamping rod 7 retract.

[0019] The basic principle, main features and advantages of the utility model are shown and described above. It should be understood by those skilled in the art that the utility model is not limited by the above-mentioned embodiments, the above-mentioned embodiments and the description in the specification are only for illustrating the principle of the utility model, and simple changes and replacements of ordinary skilled in the art are within the protection scope of the utility model without departing from the spirit and scope of the utility model.

Claims

1. A printing plate cylinder lifting mechanism characterized by, The lifting block is arranged at both ends of the plate roller, a base is arranged below the lifting block, the base is fixedly connected to the printing machine frame, a driving shaft and a lifting shaft are arranged in the base, the upper end of the lifting shaft is arranged in the lifting block, a gear is arranged on the driving shaft, a rack is arranged on the lifting shaft, the gear is engaged with the rack, one end of the driving shaft is connected with a driving device, and the driving device drives the driving shaft to rotate and push the lifting shaft to ascend, so as to push the lifting block to ascend.

2. A printing forme roller lifting mechanism as claimed in claim 1, characterized in that The driving device comprises a connecting rod, a piston rod and a pressure cylinder, one end of the connecting rod is fixedly connected with the driving shaft, the other end of the connecting rod is connected with one end of the piston rod, the other end of the piston rod is arranged in the pressure cylinder, the pressure cylinder is connected to the base or the printing machine frame, the pressure cylinder drives the piston rod to stretch and retract to drive the connecting rod to rotate, so as to drive the driving shaft to rotate.

3. A printing forme roller lifting mechanism as claimed in claim 2, c h a r a c t e r i s e d in that The connecting rod is provided with a first through hole through which the driving shaft passes, the side surface of the connecting rod is provided with a first threaded hole corresponding to the position of the first through hole, the first threaded hole is threadedly connected with a first bolt, the first bolt is clamped in the first through hole, a slot is arranged on the first through hole, the slot divides the connecting rod into a first clamping part and a second clamping part, the first clamping part is provided with a second through hole, the second clamping part is provided with a second threaded hole, a second bolt is arranged in the second through hole, and the second bolt is threadedly connected with the second threaded hole, so that the first clamping part and the second clamping part clamp the driving shaft.

4. A printing forme roller lifting mechanism according to claim 1, wherein A third through hole is arranged on the side surface of the base, a clamping rod is arranged in the third through hole, a clamping device is arranged at the rear end of the clamping rod, when the lifting block is not lifted, the clamping device clamps the lifting shaft with the clamping rod, so that the lifting shaft is fixed.

5. A printing forme roller lifting mechanism as claimed in claim 4, c h a r a c t e r i s e d in that The clamping device is a pneumatic cylinder or a hydraulic cylinder.

Images