CN210001236U

CN210001236U - Paper feeding transmission mechanism of printing machine

Info

Publication number: CN210001236U
Application number: CN201920425333.7U
Authority: CN
Inventors: 林友国; 林国强
Original assignee: Zhejiang Olite Technology Co Ltd
Current assignee: Guowang Technology Zhejiang Co ltd
Priority date: 2019-03-30
Filing date: 2019-03-30
Publication date: 2020-01-31
Anticipated expiration: 2029-03-30

Abstract

The utility model provides a paper feeding drive mechanism of kind of printing machines, include and install driving shaft (12) in the frame through the bearing, install bobbin (32) on driving shaft (12) through the bearing, gear (31) of form advancing on bobbin (32) of static coupling, install in the frame and with the brake damping piece of the surface contact of bobbin (32), and install the single-point clutch on driving shaft (12), this single-point clutch includes transmission fluted disc (24), the second bobbin and sets gradually at the epaxial cylinder block of second bobbin, piston body and drive fluted disc, annular and the protruding structure of piston body through mutual gomphosis and cylinder block sliding connection, be formed with the ring chamber between the terminal surface of annular protrusion and the annular, set up the air inlet with the ring chamber intercommunication on the outer peripheral face of cylinder block, the relative side of driving fluted disc (24) of drive fluted disc is provided with reset spring, adopt the utility model provides a paper feeding drive mechanism helps making the operation precision of printing machine keep stable for a long time.

Description

Paper feeding transmission mechanism of printing machine

Technical Field

The utility model relates to a printing machine technical field especially relates to paper feeding drive mechanism of kinds of printing machines.

Background

At present, the paper feeding drive mechanism of printing machine adopts the clutch of electromagnetic control mode mostly, when the printing machine moves, the energy consumption of clutch is higher, moreover, because paper feeding action of paper feeding drive mechanism is comparatively frequent, after repetitious usage, the electromagnetic effect of clutch often can obviously weaken, this operation precision that will lead to the printing machine reduces, finally influence the normal clear of production, consequently, how to improve the stability of paper feeding drive mechanism in order to improve printing machine operation precision, the technical problem who has become the skilled person in the art and wait for solution urgently.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a paper feeding drive mechanism of kinds of printing machines, adopt this paper feeding drive mechanism to help making the running accuracy of printing machine keep stable for a long time.

In order to achieve the above object, the utility model provides a following technical scheme:

A paper feeding transmission mechanism of a printer, comprising:

a driving shaft mounted on the frame through a bearing;

the paper feeding mechanism is characterized in that the paper feeding mechanism comprises an drum shaft which is arranged on the driving shaft through a bearing, a paper feeding gear is fixedly connected to the drum shaft, a braking damping sheet which is arranged on the rack is arranged on the side of the paper feeding gear, and the braking damping sheet is in contact with the outer surface of the drum shaft;

be located sides in addition of the gear that form advances installs the epaxial single-point clutch of driving, the single-point clutch is jaw clutch, including transmission fluted disc, second bobbin and set gradually the epaxial cylinder block of second bobbin, piston body and drive fluted disc, transmission fluted disc with bobbin static hookup, the second bobbin with the driving shaft static hookup, the drive fluted disc passes through key and second bobbin dynamic hookup, the piston body through mutual gomphosis annular and ring convex structure with cylinder block sliding hookup, the terminal surface of ring convex with be formed with the ring chamber between the annular, seted up on the outer peripheral face of cylinder block with the air inlet of ring chamber intercommunication, the cylinder block with the second bobbin passes through deep groove ball bearing hookup, the piston body with the drive fluted disc passes through second deep groove ball bearing hookup, the drive fluted disc is relative the side of transmission fluted disc is provided with reset spring, reset spring's both ends respectively with drive fluted disc and butt baffle, the baffle with be static hookup between the second bobbin.

Preferably, in the paper feeding transmission mechanism, the brake damping sheet comprises two circular arc bodies which are embraced on the circumferential surface of the th cylinder shaft, ends of the two circular arc bodies are hinged to through a pivot shaft mounted on the frame, and the other end is connected to through a slack adjuster.

Preferably, in the paper feeding transmission mechanism, the slack adjuster includes a screw, a compression spring and a nut, wherein end of the screw is fixedly connected with circular arc bodies, and another end of the screw passes through a through hole on another circular arc bodies and is provided with the nut;

the compression spring is sleeved on the screw rod, the end is abutted to the nut, and the end is abutted to the arc body with the through hole.

Preferably, in the above paper feeding transmission mechanism, an O-ring is provided on a sliding surface between the annular groove and the annular projection.

Preferably, in the above paper feeding transmission mechanism, the ring protrusion is a structure on the cylinder block.

Preferably, in the above paper feeding transmission mechanism, the outer surface of the cylinder block is provided with a stopper groove, and the stopper groove is located on an edge where the outer end surface of the cylinder block intersects with the outer peripheral surface.

Preferably, in the paper feeding transmission mechanism, the cylinder block and the piston body are both provided with a positioning hole extending along the axis direction of the second cylinder shaft, and a positioning pin penetrates through the positioning hole.

Preferably, in the above paper feed transmission mechanism, in a circumferential direction of the second cylinder shaft, the positioning pin is located at a distance of 180 ° from the air inlet, and the stopper groove is located at a distance of 90 ° from the air inlet.

Preferably, in the paper feeding transmission mechanism, a pin hole extending in the radial direction of the second cylinder shaft is formed in the outer peripheral surface of the cylinder block, the pin hole is communicated with the positioning hole in the cylinder block, and an elastic cylindrical pin in the pin hole passes through a through hole in the positioning pin.

Preferably, in the above paper feeding transmission mechanism, a sprocket is mounted to a head of the driving shaft.

The single-point clutch adopted by the paper feeding transmission mechanism provided by the utility model has the working principle that pressure gas is introduced into the annular cavity from the air inlet on the cylinder body to push the piston body, the second deep groove ball bearing and the driving fluted disc, and the driving fluted disc is jointed with the driving fluted disc after the reset spring is compressed; and the reset spring extends to push the driving fluted disc, the second deep groove ball bearing and the piston body to return, gas in the annular cavity is discharged from the gas inlet, and the driving fluted disc is separated from the transmission fluted disc. Therefore, the utility model provides a single-point clutch that paper feeding drive mechanism adopted is pneumatic, compares with the clutch that adopts the electromagnetism mode of controlling, not only energy-conservation helps making the operation precision of printing machine keep stable for a long time moreover.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic perspective view of kinds of paper feeding transmission mechanisms provided by the embodiment of the present invention;

fig. 2 is a schematic diagram of a paper feeding transmission mechanism according to an embodiment of the present invention;

FIG. 3 is a schematic perspective view of a single point clutch in the paper feed drive;

FIG. 4 is a schematic diagram of a single point clutch in the paper feed transmission;

fig. 5 is an engaged state diagram of a single point clutch in the paper feed transmission mechanism;

fig. 6 is a diagram showing a disengaged state of a single point clutch in the paper feed transmission mechanism;

FIG. 7 is a schematic view of the piece 5 of FIG. 3;

FIG. 8 is a schematic view of the piece 2 of FIG. 3;

figure 9 is a schematic view of the piece 1 of figure 3.

Labeled as:

11. a sprocket; 12. a drive shaft;

21. the piston comprises a cylinder body, a 211, an air inlet, 212, a stop groove, 22, a piston body, 23, a driving fluted disc, 24, a driving fluted disc, 25, a second cylinder shaft, 251, a snap spring, 26, a positioning pin, 261, an elastic cylindrical pin, 271, an deep groove ball bearing, 272, a second deep groove ball bearing, 28, a return spring, 29 and a baffle plate;

31. 32, drum shaft;

41. th arc body, 42 th second arc body, 43 th compression spring, 44 th nut, 45 th pivot;

51. a support; 52. a shaft seat;

100. an electromagnetic valve; 200. a muffler; 300. and (4) air source equipment.

Detailed Description

For ease of understanding, the present invention will now be described with reference to the accompanying drawings, step .

Referring to fig. 1 and 2, fig. 1 is a schematic perspective view of paper feeding transmission mechanisms provided by an embodiment of the present invention, and fig. 2 is a schematic principle view of a paper feeding transmission mechanism provided by an embodiment of the present invention, a paper feeding transmission mechanism provided by an embodiment of the present invention includes a driving shaft 12, a paper feeding gear 31, a th cylinder shaft 32, a single-point clutch and a brake damping sheet, wherein the driving shaft 12 is mounted on a frame (a bracket 51 and a shaft seat 52) through a bearing, a chain wheel 11 is mounted on a shaft head of the driving shaft 12, the th cylinder shaft 32 is mounted on the driving shaft 12 through a bearing, the paper feeding gear 31 is statically coupled on the th cylinder shaft 32, the single-point clutch and the brake damping sheet are located at two sides of the paper feeding gear 31, the single-point clutch is mounted on the driving shaft 12, the brake damping sheet is mounted on the frame, and the brake damping sheet.

The single-point clutch in the paper feeding transmission mechanism is described in detail below, and referring to fig. 3 and 4, fig. 3 is a schematic perspective view of the single-point clutch in the paper feeding transmission mechanism, and fig. 4 is a schematic principle view of the single-point clutch in the paper feeding transmission mechanism.

The single-point clutch is a jaw clutch, and comprises a transmission fluted disc 24, a second cylinder shaft 25, and a cylinder block 21, a piston body 22 and a driving fluted disc 23 which are sequentially arranged on the second cylinder shaft 25, wherein the transmission fluted disc 24 is statically connected with an -th cylinder shaft 32 (see fig. 2), the second cylinder shaft 25 is statically connected with a driving shaft 12 (see fig. 2), the driving fluted disc 23 is movably connected with the second cylinder shaft 25 through a key, the piston body 22 is slidingly connected with the cylinder block 21 through a mutually-embedded ring groove and ring convex structure, a ring cavity is formed between the end surface of the ring convex and the ring groove, an air inlet 211 communicated with the ring cavity is formed on the outer peripheral surface of the cylinder block 21, meanwhile, the cylinder block 21 is connected with the second cylinder shaft 25 through a deep groove ball bearing 271, the piston body 22 is connected with the driving fluted disc 23 through a second deep groove ball bearing 272, a return spring 28 is arranged on the side of the driving fluted disc 23 opposite to the transmission fluted disc 24, two ends of the return spring 28 are respectively abutted against the driving fluted disc 23 and the baffle 29 is connected with the second cylinder shaft 25, and the baffle 29 is fixed on.

It should be noted that "single point clutch" means that only positions of the clutch can be meshed with each other in full-circle rotation of the driving toothed plate 23 relative to the driving toothed plate 24, that is, the clutch has the driving property of only, as shown in fig. 8 and 9, the teeth on the end faces of the driving toothed plate 23 and the driving toothed plate 24 are irregular, so that the clutch is guaranteed to be single point clutch.

Since the driving toothed plate 23 is movably coupled to the second shaft 25 by a key, the driving toothed plate 23 can rotate with the second shaft 25 and can move axially relative to the second shaft 25. in a specific application, the key coupling between the driving toothed plate 23 and the second shaft 25 can be a guide key, a sliding key, or a spline, as can be seen from fig. 7 and 8, in this embodiment, the driving toothed plate 23 and the second shaft 25 are in a spline coupling.

The piston body 22 and the cylinder block 21 are slidably coupled by a ring groove and a ring protrusion structure that are fitted to each other, as shown in fig. 4, in this embodiment, the ring protrusion is a structure on the cylinder block 21, and the ring groove is a structure on the piston body 22. Of course, in other embodiments, it is also possible to interchange the ring protrusions and the ring grooves, i.e. the ring grooves can be designed as structures on the cylinder block 21 and the ring protrusions can be designed as structures on the piston body 22.

An annular cavity is formed between the end face of the annular protrusion and the annular groove, so that after pressure gas is introduced from the gas inlet 211 of the cylinder block 21, the pressure gas in the annular cavity can enable the piston body 22 to be uniformly stressed on the whole circumference. In order to improve the airtightness, an O-ring seal may be provided on a sliding surface between the annular projection and the annular groove.

As shown in fig. 4, in this embodiment, the inner ring of the second deep groove ball bearing 272 is mounted on the piston body 22, and the driving fluted disc 23 is sleeved on the outer ring of the second deep groove ball bearing 272. In other embodiments, the reverse arrangement may be used, i.e., the inner ring of the second deep groove ball bearing 272 is mounted on the drive sprocket 23 and the piston body 22 is fitted over the outer ring of the second deep groove ball bearing 272 by interchanging the mounting structures.

The embodiment of the utility model provides a paper feeding drive mechanism's theory of operation as follows:

the sprocket 11 drives the driving shaft 12 to rotate, the second cylinder shaft 25 and the driving toothed disc 23 in the single-point clutch rotate along with the driving shaft 12 , when paper is required to be fed, pressure gas enters the annular cavity from the gas inlet 211 of the cylinder block 21 to push the piston body 22, the second deep groove ball bearings 272 and the driving toothed disc 23, after the return spring 28 is compressed, the driving toothed disc 23 is engaged with the driving toothed disc 24, the engaged state is as shown in fig. 5, the cylinder shaft 32 and the paper feeding gear 31 rotate along with the driving toothed disc 23 due to the fact that the driving toothed disc 24 is statically coupled with the cylinder shaft 32, so that paper feeding is achieved, when paper is not required to be fed, the return spring 28 in the single-point clutch extends to push the driving toothed disc 23, the second deep groove ball bearings 272 and the piston body 22 to return, gas in the annular cavity is discharged from the gas inlet 211 of the cylinder block 21 to drive the driving toothed disc 23 to be separated from the driving toothed disc 24, and the separated state is as shown in fig. 6, since the brake sheet contacts with the outer surface of the , the first cylinder shaft 32 and.

In a specific practical application, the brake damping sheet can adopt various structural forms, for example, the brake damping sheet can be a long strip, in this embodiment, in order to be able to adjust the magnitude of the damping force, the brake damping sheet is designed as two circular arc bodies clasped on the circumferential surface of the -th cylinder shaft 32, namely, the -th circular arc body 41 and the second circular arc body 42 shown in fig. 1, as can be seen from fig. 1 and 2, 0 ends of the two circular arc bodies are hinged to through a pivot 45 installed on the frame, the other end is connected to through a slack adjuster, the slack adjuster includes a screw (not marked in the figure), a compression spring 43 and a nut 44, an end of the screw is fixedly connected to the -th circular arc body 41, the other end passes through a through hole on the second circular arc body 42 and is installed with the nut 44, the compression spring 43 is sleeved on the screw, an end of the compression spring 43 is abutted to the nut 44, the other end is abutted to the second circular arc body 42.

As shown in fig. 4, in a specific practical application, provides a solenoid valve 100 on a pipeline connecting the air supply device 300 and the cylinder block 21, the solenoid valve 100 is a two-position three-way solenoid valve with inlet and outlet, and a muffler 200 is connected to a port of the solenoid valve 100 as an exhaust port.

As shown in fig. 3, the outer surface of the cylinder block 21 is provided with a stop groove 212, the stop groove 212 is located on the edge where the outer end surface of the cylinder block 21 and the outer peripheral surface intersect, and the stop groove 212 is used for providing types of snap-fit structures with the frame to resist the trend of the rotary motion of the cylinder block 21.

, in order to resist the tendency of the piston body 22 to rotate, the cylinder block 21 and the piston body 22 are provided with positioning holes extending along the axial direction of the second cylinder shaft 25, and positioning pins 26 are inserted into the positioning holes, as shown in fig. 4.

As shown in fig. 3, the positional relationship among the inlet port 211, the stopper groove 212, and the positioning pin 26 is such that the positioning pin 26 is located 180 ° from the inlet port 211 and the stopper groove 212 is located 90 ° from the inlet port 211 in the circumferential direction of the second cylindrical shaft 25.

As shown in fig. 4, in order to prevent the positioning pin 26 from being withdrawn by itself, a pin hole extending in the radial direction of the second cylinder shaft 25 is formed in the outer circumferential surface of the cylinder block 21, the pin hole is penetrated through a positioning hole in the cylinder block 21, and an elastic cylindrical pin 261 in the pin hole is inserted through a through hole in the positioning pin 26. The positioning pin 26 is blocked by the elastic cylindrical pin 261 and thus cannot be withdrawn by itself, and the elastic cylindrical pin 261 expands in the through hole of the positioning pin 26 and the pin hole of the cylinder block 21 by virtue of its own elastic deformation and thus cannot be withdrawn by itself.

Various modifications to the disclosed embodiments will be readily apparent to those skilled in the art, and the -like principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention.

Claims

The paper feeding transmission mechanism of kinds of printing machines, characterized by comprising:

a driving shaft (12) mounted on the frame through a bearing;

an drum shaft (32) is arranged on the driving shaft (12) through a bearing, a paper feeding gear (31) is fixedly connected to the drum shaft (32), a braking damping sheet arranged on the rack is arranged on the side of the paper feeding gear (31), and the braking damping sheet is in contact with the outer surface of the drum shaft (32);

the single-point clutch is a jaw clutch and comprises a transmission fluted disc (24), a second cylinder shaft (25), a cylinder body (21), a piston body (22) and a driving fluted disc (23) which are sequentially arranged on the second cylinder shaft (25), wherein the transmission fluted disc (24) is in static connection with the cylinder shaft (32), the second cylinder shaft (25) is in static connection with the driving shaft (12), the driving fluted disc (23) is in dynamic connection with the second cylinder shaft (25) through a key, the piston body (22) is in sliding connection with the cylinder body (21) through a mutually embedded annular groove and annular convex structure, an annular cavity is formed between the end surface of the annular convex and the annular groove, an air inlet (211) communicated with the annular cavity is formed in the outer peripheral surface of the cylinder body (21), the cylinder body (21) and the second cylinder shaft (25) are in sliding connection through a second groove , the cylinder body (22) is in connection with the annular groove, a ball bearing (272) is connected with the driving shaft (23), and a return spring is arranged between the piston body (23) and the piston body (23), and the driving fluted disc (29) is connected with a return spring () and a return spring.
2. The paper feeding transmission mechanism according to claim 1, wherein said brake damping sheet comprises two circular arc bodies clasped on the circumferential surface of said cylindrical shaft (32), the ends of said two circular arc bodies are hinged at by a pivot (45) mounted on said frame, and the other ends are connected at by a slack adjuster.
3. The paper feeding transmission mechanism according to claim 2, wherein the slack adjuster comprises a screw, a compression spring (43) and a nut (44), wherein ends of the screw are fixedly connected with circular arc bodies, and another ends penetrate through holes on another circular arc bodies and are provided with the nut (44);

the compression spring (43) is sleeved on the screw rod, the end is abutted with the nut (44), and the end is abutted with the circular arc body with the through hole.
4. The paper feeding transmission mechanism according to claim 1, wherein an O-ring is provided on a sliding surface between the annular projection and the annular groove.
5. The feeding transmission according to claim 4, characterized in that the annular projection is a structure on the cylinder block (21).
6. The paper feeding transmission mechanism according to claim 1, wherein the outer surface of the cylinder block (21) is provided with a stopper groove (212), the stopper groove (212) being located on an edge where the outer end surface and the outer peripheral surface of the cylinder block (21) intersect.
7. The paper feeding transmission mechanism according to claim 6, wherein the cylinder block (21) and the piston body (22) are each provided with a positioning hole extending in the axial direction of the second cylinder shaft (25), and a positioning pin (26) is inserted into the positioning hole.
8. The paper feeding transmission mechanism according to claim 7, wherein the positioning pin (26) is located at a distance of 180 ° from the air inlet (211) and the stopper groove (212) is located at a distance of 90 ° from the air inlet (211) in a circumferential direction of the second cylinder shaft (25).
9. The paper feeding transmission mechanism according to claim 8, wherein a pin hole extending in the radial direction of the second cylinder shaft (25) is formed in the outer peripheral surface of the cylinder block (21), the pin hole is communicated with the positioning hole in the cylinder block (21), and an elastic cylindrical pin (261) in the pin hole passes through a through hole in the positioning pin (26).
10. The paper feeding transmission mechanism according to any of claims 1-9, wherein the axle head of the driving axle (12) is mounted with a chain wheel (11).