CN112408008B

CN112408008B - Feeding device of offset press

Info

Publication number: CN112408008B
Application number: CN202011312067.0A
Authority: CN
Inventors: 何小午; 何孔月
Original assignee: SHANGHAI XUANREN MACHINERY EQUIPMENT CO LTD
Current assignee: SHANGHAI XUANREN MACHINERY EQUIPMENT CO LTD
Priority date: 2020-11-20
Filing date: 2020-11-20
Publication date: 2022-08-19
Anticipated expiration: 2040-11-20
Also published as: CN112408008A

Abstract

The invention discloses a feeding device of an offset press, which comprises a device main body, a lifting platform, an assembly substrate and a paper feeding rotary table, wherein the device main body is of a frame structure with an opening at one side, an installation roadway for installing the lifting platform, the assembly substrate and the paper feeding rotary table is arranged in the device main body, the lifting platform is arranged at the upper part of the installation roadway and is connected by at least two symmetrically arranged hydraulic telescopic rods, the top end of each hydraulic telescopic rod is fixedly connected with the device main body, the bottom end of the lifting platform is hinged with four buffer springs with the bottom ends hinged with the upper end surface of the assembly substrate in a rectangular array manner, a group of butt connection plates are symmetrically constructed at two sides of the bottom end of the assembly substrate, a group of extension plates are obliquely constructed at the bottom ends of the butt connection plates, the paper feeding rotary tables are symmetrically provided with a group, the group of paper feeding rotary tables are connected by a transmission shaft coaxial with the paper feeding rotary tables, and the transmission shaft is matched with a group of driving mechanisms. The feeding device of the offset press is reasonable in structure, easy to realize paper feeding one by one and fast, and recommended to be widely used.

Description

Feeding device of offset press

Technical Field

The invention belongs to the technical field of offset presses, and particularly relates to a feeding device of an offset press.

Background

An offset printing press is a kind of offset printing press, in which printing images are first printed on a blanket cylinder from a printing plate and then transferred to paper by the blanket cylinder. Offset presses can be divided into sheet-fed offset presses and web-fed offset presses according to different paper feeding modes; according to the number of printing colors finished by one-time paper feeding, the printing machine can be divided into a single-color printing machine, a double-color printing machine, a four-color printing machine and a multi-color printing machine; the full-paper printing machine can be divided into a small offset press, a six-opening, four-opening, two-opening and full-paper printing machine according to the maximum paper breadth to be printed, and a double-sided printing machine capable of simultaneously finishing two-sided printing by one-time paper feeding is also arranged.

The sheet-fed offset press is a lithographic printing press, is used for printing high-grade commercial printed matters and packaging printed matters, and is the mainstream of modern paper printing. The existing offset press has the problem that when paper is fed, lower paper is easy to be brought out due to the friction force generated when the upper paper is conveyed.

Disclosure of Invention

The present invention is directed to a feeding device of an offset printing machine to solve the above problems.

In order to achieve the purpose, the invention provides the following technical scheme: a feeding device of an offset press comprises a device main body, a lifting platform, an assembly substrate and a paper feeding turntable;

the device main body is of a frame structure with an opening at one side, an installation roadway for installing a lifting platform, an assembly substrate and a paper feeding turntable is arranged in the device main body, the lifting platform is installed at the upper part of the installation roadway and is connected by at least two symmetrically arranged hydraulic telescopic rods, the top ends of the hydraulic telescopic rods are fixedly connected with the device main body, and the bottom ends of the lifting platform are connected with four buffer springs with the bottom ends connected with the upper end surface of the assembly substrate in a rectangular array manner;

a group of butt-joint connecting plates are symmetrically constructed on two sides of the bottom end of the assembling substrate, a group of extension plates are obliquely constructed on the bottom end of each butt-joint connecting plate, a group of paper feeding rotary tables are symmetrically arranged, the group of paper feeding rotary tables are connected through a transmission shaft coaxial with the paper feeding rotary tables, and the transmission shaft is matched with a group of driving mechanisms, wherein the driving mechanisms regulate the transmission shaft to rotate to drive the paper feeding rotary tables to rotate around the axes of the transmission shafts;

the outer edge of the paper feeding rotary table is in an annular array structure and is provided with three branch plates, a movable roller is movably connected between the branch plates of a group of paper feeding rotary tables through a bearing, a paper separating mechanism is arranged on one side of the paper feeding rotary table matched with the position of the movable roller and comprises an adjustable connecting plate, a pressing roller is fixedly arranged between the end parts of the corresponding adjustable connecting plates on the group of paper feeding rotary tables, an arc-shaped slideway for the sliding installation of the adjustable connecting plates is arranged at the position of the paper feeding rotary table matched with the position of the paper separating mechanism, the adjustable connecting plate is provided with a group of sliding blocks extending into the arc-shaped slideway, arc-shaped guide rods are arranged in the arc-shaped slideway, the arc-shaped guide rods penetrate through the sliding blocks constructed on the adjustable connecting plates, reset springs are sleeved on the peripheries of two sides of the arc-shaped guide rods, and one side of the adjustable connecting plates facing the axis direction of the paper feeding rotary tables is in an arc shape, and a tooth socket is constructed in the cambered surface, one side of the extension plate, which is far away from the paper feeding turntable, is fixedly provided with a group of second driving motors, a motor shaft of each second driving motor penetrates through the extension plate and is movably connected with the extension plate through a second roller bearing, and a group of transmission gears meshed with the tooth socket is fixed at the end part of the motor shaft of each second driving motor.

Preferably, the top in installation tunnel is the rectangle array and is provided with four first direction slide bars that the bottom runs through lift platform, the through hole of the first direction slide bar of adaptation is seted up in lift platform's up end four corners, and the first linear bearing of the first direction slide bar of sliding fit is installed to the gomphosis in the through hole.

Preferably, the rectangular array is personally submitted to assembly substrate's upper end and is provided with four second direction slide bars that run through lift platform in top, the through-hole of adaptation second direction slide bar is seted up at lift platform's upper end four corners, and the gomphosis installs the second linear bearing of sliding fit second direction slide bar in the through-hole, the second direction slide bar is coaxial with assembly substrate top corresponding position articulated buffer spring.

Preferably, the two ends of a transmission shaft matched with the paper feeding turntable extend out of the paper feeding turntable and are movably connected and matched with the butt joint connecting plate through a first roller bearing, wherein the transmission shaft penetrates out of the butt joint connecting plate to be in butt joint with the belt pulley, the driving mechanism is a first driving motor fixedly installed on the upper end face of the assembling substrate, a motor shaft on two sides of the first driving motor is in butt joint with the belt pulley, and the belt pulley on the motor shaft is connected with the belt pulley on the transmission shaft on the same side through a transmission belt.

Preferably, the bottom slidable mounting in installation tunnel has a set of material loading platform, the bottom symmetrical structure of material loading platform has the smooth arris structure of a set of sliding fit device main part, and smooth arris structure is parallel to each other with the transmission shaft axle center of connecting the carousel of form advancing, one side in installation tunnel is constructed a set of equipment that is on a parallel with smooth arris structure and is installed the arm additional.

Preferably, the bottom symmetry that equipment installed the arm additional is provided with a set of electric telescopic handle, electric telescopic handle's bottom is connected with a set of pressure that covers the paper edge and covers the piece of gluing.

Preferably, the outer edge surfaces of the movable roller and the pressing roller are both attached with rubber damping layers.

The invention has the technical effects and advantages that: this offset press's feed arrangement benefits from the design of the carousel of form advancing, the movable roller contacts the paper earlier when rotatory, rolling friction realizes pressing and covers and can not derive upper portion paper, the adjustable even board that the rear was rotatory to come and the roller that covers on will make movable roller and the paper that covers between the roller of pressing be the arc because of frictional force convolution part paper for the rear portion paper vacates, electric telescopic handle pushes down the next paper of location, upper portion paper is then in the rotation of subsequent carousel of form advancing by pressing the roller propelling movement to the outside, effectively prevent the lower part paper because of the frictional force that produces when the upper portion paper conveys and lead to bring out the problem.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural diagram of the main body of the apparatus of the present invention;

FIG. 3 is a schematic view of the lifting platform of the present invention;

FIG. 4 is a schematic structural diagram of a mounting substrate according to the present invention;

FIG. 5 is an enlarged schematic view of the structure at A in FIG. 1 according to the present invention;

fig. 6 is an enlarged schematic view of the structure at B in fig. 1 according to the present invention.

In the figure: the device comprises a device main body 1, a 101 installation roadway, a 102 feeding platform, a 103 equipment installation arm, a 2 lifting platform, a 201 hydraulic telescopic rod, a 202 adaptation groove, a 3 first guide slide rod, a 301 first linear bearing, a 4 assembly base plate, a 401 buffer spring, a 5 second guide slide rod, a 501 second linear bearing, a 6 butt joint connecting plate, a 601 first roller bearing, a 7 extension plate, a 701 second roller bearing, an 8 paper feeding turntable, an 801 movable roller, a 9 paper separating mechanism, a 10 adjustable connecting plate, a 1001 arc-shaped slideway, a 1002 tooth groove, a 1003 reset spring, a 11 first driving motor, a 1101 driving belt, a 12 second driving motor, a 1201 driving gear, a 13 electric telescopic rod and a 1301 pressing rubber coating block.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

Unless otherwise defined, all references herein to upper, lower, left, right, front, rear, inner and outer, etc., are to be interpreted as referring to upper, lower, left, right, front, rear, inner and outer, etc., in the figures illustrated in the present application, and are intended to be open ended herein.

The invention provides a feeding device of an offset press as shown in figures 1-6, which comprises a device main body 1, a lifting platform 2, an assembly substrate 4 and a paper feeding turntable 8;

the device comprises a device main body 1, a lifting platform 2, an assembly substrate 4 and a paper feeding turntable 8, wherein the device main body 1 is of a frame structure with an opening at one side, the interior of the device main body is provided with an installation roadway 101 for installing the lifting platform 2, the assembly substrate 4 and the paper feeding turntable 8, the lifting platform 2 is installed on the upper part of the installation roadway 101 and is connected by at least two hydraulic telescopic rods 201 which are symmetrically arranged, the top end of each hydraulic telescopic rod 201 is fixedly connected with the device main body 1 (the hydraulic telescopic rods 201 are pushed along with the movement of paper, namely, the hydraulic telescopic rods slowly extend downwards along with the reduction of the paper, so that a movable roller 801 and a pressing roller of the lower paper feeding turntable 8 can be pressed and covered above the paper), the bottom end of the lifting platform 2 is connected with four buffer springs 401 with the bottom ends connected with the upper end surface of the assembly substrate 4 in a rectangular array mode, and the buffer springs 401 are arranged to apply pressure downwards;

a group of butt joint plates 6 are symmetrically constructed on two sides of the bottom end of the assembly substrate 4, a group of extension plates 7 are obliquely constructed on the bottom end of each butt joint plate 6, a group of paper feeding rotary discs 8 are symmetrically arranged, the group of paper feeding rotary discs 8 are connected through transmission shafts coaxial with the paper feeding rotary discs 8, and the transmission shafts are matched with a group of driving mechanisms, wherein the driving mechanisms adjust the transmission shafts to rotate to drive the paper feeding rotary discs 8 to rotate around the axes of the transmission shafts;

the outer edge of the paper feeding turntable 8 is in an annular array structure and is provided with three branch plates, a movable roller 801 is movably connected between branch plates of a group of paper feeding turntable 8 through a bearing, a paper separating mechanism 9 is installed on one side of the paper feeding turntable 8 matched with the position of the movable roller 801, the paper separating mechanism 9 comprises an adjustable connecting plate 10, a group of pressing rollers are fixedly installed between the end parts of the corresponding adjustable connecting plates 10 on the paper feeding turntable 8, an arc-shaped slideway 1001 for the sliding installation of the adjustable connecting plate 10 is arranged at the position of the paper feeding turntable 8 matched with the position of the paper separating mechanism 9, the adjustable connecting plate 10 is provided with a group of sliding blocks extending into the arc-shaped slideway 1001, an arc-shaped guide rod is installed in the arc-shaped slideway 1001, the arc-shaped guide rod penetrates through the sliding blocks constructed on the adjustable connecting plate 10, a reset spring 1003 is sleeved on the peripheries of two sides of the arc-shaped guide rod, and the adjustable connecting plate 10 is in a cambered surface towards one side of the axis direction of the paper feeding turntable 8, a tooth groove 1002 is formed in the arc surface, a group of second driving motors 12 is fixed on one side of the extension plate 7 far away from the paper feeding turntable 8, motor shafts of the second driving motors 12 penetrate through the extension plate 7 and are movably connected with the extension plate 7 through second roller bearings 701, and a group of transmission gears 1201 meshed with the tooth groove 1002 are fixed at the end parts of the motor shafts of the second driving motors 12.

Specifically, the top of the installation roadway 101 is a rectangular array and is provided with four first guide slide bars 3, the bottom ends of which penetrate through the lifting platform 2, the four corners of the upper end face of the lifting platform 2 are provided with through holes for the first guide slide bars 3, and the through holes are internally embedded with first linear bearings 301 which are in sliding fit with the first guide slide bars 3.

Specifically, the rectangular array is provided with four second guide slide bars 5 with tops penetrating through the lifting platform 23 on the upper end surface of the assembly substrate 4, through holes adapted to the second guide slide bars 5 are formed in four corners of the upper end surface of the lifting platform 2, second linear bearings 501 slidably matched with the second guide slide bars 5 are embedded in the through holes, and the second guide slide bars 5 are coaxial with buffer springs 401 hinged to corresponding positions above the assembly substrate 4.

Specifically, the two ends of the transmission shaft of the paper feeding turntable 8 are matched with each other to extend out of the paper feeding turntable 8 and to be movably connected and matched with the butt joint connecting plate 6 through a first roller bearing 601, wherein the transmission shaft penetrates out of the butt joint connecting plate 6 to be in butt joint with the belt pulley, the driving mechanism is a first driving motor 11 fixedly installed on the upper end face of the assembling substrate 4, motor shafts on the two sides of the first driving motor 11 are in butt joint with the belt pulley, and the belt pulley on the motor shaft is connected with the belt pulley on the transmission shaft on the same side through a transmission belt 1101.

Specifically, the bottom slidable mounting of installation tunnel 101 has a set of material loading platform 102, the bottom symmetrical structure of material loading platform 102 has the smooth arris structure of a set of sliding fit device main part 1, and smooth arris structure is parallel to each other with the transmission shaft axle center of connecting the carousel 8 of form advancing, one side of installation tunnel 101 is constructed a set of equipment that is on a parallel with smooth arris structure and is installed arm 103 additional.

Specifically, the bottom symmetry of equipment additional installation arm 103 is provided with a set of electric telescopic handle 13, electric telescopic handle 13's bottom is connected with a set of pressure covering rubber block 1301 that covers the paper edge.

Specifically, the outer fringe face of activity roller 801 and pressure covering roller all attaches rubber damping layer, rubber damping layer be used for increase with the paper between the frictional resistance, can change the damping structure of different materials as required to guarantee sufficient frictional force.

In the working principle, when paper is conveyed, the lifting platform 2 descends by adjusting the extension of the hydraulic telescopic rod 201 to drive the paper feeding turntable 8 to press the paper surface, and a certain pressure is applied to the paper surface by the buffer spring 401, at this time, the first driving motor 11 is started, the transmission belt 1101 drives the belt pulley to enable the paper feeding turntable 8 to rotate clockwise, the movable roller 801 firstly contacts the paper surface during rotation, upper paper cannot be led out while pressing is achieved due to rolling friction between the movable roller 801 and the paper, the adjustable connecting plate 10 which rotates backwards and the upper pressing roller thereof drive the adjustable connecting plate 10 to rapidly approach the adjacent movable roller 801 when the second driving motor 12 drives the transmission gear 1201 to rotate clockwise, and the friction force generated between the pressing roller and the paper convolutes part of the paper to enable the paper between the movable roller 801 and the pressing roller to be arc, the rear part (namely, the rear part faces one side of the electric telescopic rod 13, the electric telescopic rod 13 is in a contraction state at this stage, the press coating rubber block 1301 is not pressed above the paper, so that the upper paper can be moved out), the paper is emptied, the electric telescopic rod 13 is driven to press and position the next paper, the upper paper is pushed to the outside by the press coating roller in the rotation of the subsequent paper feeding rotary table 8, the problem that the lower paper is taken out due to the friction force generated when the upper paper is conveyed is effectively prevented, and the paper feeding is repeatedly realized.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. A feeding device of an offset press comprises a device main body (1), a lifting platform (2), an assembly substrate (4) and a paper feeding turntable (8);

the method is characterized in that: the device main body (1) is of a frame structure with an opening on one side, an installation roadway (101) for installing a lifting platform (2), an assembly substrate (4) and a paper feeding turntable (8) is formed in the device main body, the lifting platform (2) is installed on the upper portion of the installation roadway (101) and is connected by at least two symmetrically arranged hydraulic telescopic rods (201), the top end of each hydraulic telescopic rod (201) is fixedly connected with the device main body (1), and the bottom end of the lifting platform (2) is connected with four buffer springs (401) with the bottom ends connected with the upper end face of the assembly substrate (4) in a rectangular array manner;

a group of butt joint connecting plates (6) are symmetrically constructed on two sides of the bottom end of the assembling base plate (4), a group of extension plates (7) are obliquely constructed on the bottom end of each butt joint connecting plate (6), a group of paper feeding rotary tables (8) are symmetrically arranged, the group of paper feeding rotary tables (8) are connected through a transmission shaft coaxial with the paper feeding rotary tables (8), and the transmission shaft is matched with a group of driving mechanisms, wherein the driving mechanisms regulate the transmission shaft to rotate to drive the paper feeding rotary tables (8) to rotate around the axes of the transmission shaft;

the paper feeding device is characterized in that three branch supporting plates are constructed in an annular array mode on the outer edge surface of the paper feeding turntable (8), a movable roller (801) is movably connected among branch plates of a group of paper feeding turntables (8) through a bearing, a paper separating mechanism (9) is installed on one side, matched with the position of the movable roller (801), of each paper feeding turntable (8), each paper separating mechanism (9) comprises an adjustable connecting plate (10), a pressing roller is fixedly installed between the end portions of the corresponding adjustable connecting plates (10) on the group of paper feeding turntables (8), an arc-shaped slide way (1001) for sliding installation of the adjustable connecting plates (10) is formed in the position, matched with the paper separating mechanism (9), of each paper feeding turntable (8), each adjustable connecting plate (10) is provided with a group of sliding blocks extending into the arc-shaped slide way (1001), an arc-shaped guide rod is installed in each arc-shaped slide way (1001), and each arc-shaped guide rod penetrates through the sliding blocks constructed on the adjustable connecting plates (10), the reset springs (1003) are sleeved on the peripheries of two sides of the arc-shaped guide rods, one side, facing the axis direction of the paper feeding rotary table (8), of the adjustable connecting plate (10) is in a cambered surface shape, tooth grooves (1002) are formed in the cambered surface, one side, away from the paper feeding rotary table (8), of the extension plate (7) is fixedly provided with a group of second driving motors (12), motor shafts of the second driving motors (12) penetrate through the extension plate (7) and are movably connected with the extension plate (7) through second roller bearings (701), and a group of transmission gears (1201) meshed with the tooth grooves (1002) are fixedly arranged at the end parts of the motor shafts of the second driving motors (12); a group of feeding tables (102) are slidably mounted at the bottom ends of the mounting roadways (101), a group of sliding edge structures of the sliding matching device main body (1) are symmetrically constructed at the bottom ends of the feeding tables (102), the sliding edge structures are parallel to the axis of a transmission shaft connected with the paper feeding turntable (8), and a group of equipment mounting arms (103) parallel to the sliding edge structures are constructed at one side of the mounting roadways (101); the bottom symmetry of equipment additional installation arm (103) is provided with a set of electric telescopic handle (13), the bottom of electric telescopic handle (13) is connected with a set of pressure that covers the paper edge and covers gluey piece (1301).

2. The feeding device of an offset printing machine according to claim 1, wherein: the top in installation tunnel (101) is rectangular array and is provided with four first direction slide bars (3) that the bottom runs through lift platform (2), the through hole of the first direction slide bar of adaptation (3) is seted up in the up end four corners of lift platform (2), and the gomphosis installs first linear bearing (301) of the first direction slide bar of sliding fit (3) in the through hole.

3. The feeding device of an offset printing machine according to claim 1, wherein: the upper end of assembly substrate (4) is personally submitted rectangular array and is provided with four second direction slide bars (5) that run through lift platform (2) on the top, the through hole of adaptation second direction slide bar (5) is seted up in the up end four corners of lift platform (2), and the gomphosis installs second linear bearing (501) of sliding fit second direction slide bar (5) in the through hole, second direction slide bar (5) are coaxial with assembly substrate (4) top correspondence position articulated buffer spring (401).

4. The feeding device of an offset printing machine according to claim 1, wherein: the cooperation the both ends of the transmission shaft of carousel of form advancing (8) extend form advancing carousel (8) outside and with butt joint even board (6) through first roller bearing (601) swing joint cooperation, wherein, the transmission shaft is worn out butt joint even board (6) and is docked with the belt pulley, actuating mechanism does assembly substrate (4) up end fixed mounting's first driving motor (11), the motor shaft and the belt pulley butt joint of first driving motor (11) both sides, and the belt pulley on the motor shaft passes through driving belt (1101) with the epaxial belt pulley of homonymy transmission and is connected.

5. The feeding device of an offset printing machine according to claim 1, wherein: the outer edge surfaces of the movable roller (801) and the pressing roller are respectively attached with a rubber damping layer.