CN211684063U

CN211684063U - Plate changing device of printing machine

Info

Publication number: CN211684063U
Application number: CN201922375314.0U
Authority: CN
Inventors: 刘高; 刘满堂; 蒋建祥
Original assignee: Hubei Golden Leaf Technology Development Co ltd
Current assignee: Hubei Golden Leaf Technology Development Co ltd
Priority date: 2019-12-25
Filing date: 2019-12-25
Publication date: 2020-10-16
Anticipated expiration: 2029-12-25

Abstract

The utility model relates to a plate changing device of a printing machine, which comprises a frame and a printing roller, wherein the frame is fixedly provided with a support above the printing roller, and the support is detachably provided with a rotating roller for winding a flexible plate; the support fixedly connected with fixed roll, the support in it slides to be provided with the movable roll that is used for flat-open flat flexographic plate to decide the roll below, decide the roll both ends and all be provided with the through-hole, movable roll circumference fixedly connected with passes the actuating lever of through-hole, the actuating lever with be provided with the drive between the fixed roll the movable roll is towards the drive assembly of fixed roll motion. The above technical scheme, the utility model, the realization is convenient for trade the version operation to the printing roller to the flat effect of exhibition of flexographic plate, promotes the work efficiency that the staff traded the version.

Description

Plate changing device of printing machine

Technical Field

The utility model belongs to the technical field of lithography apparatus's technique and specifically relates to a version changing device of printing machine is related to.

Background

The printing machine comprises an offset printing unit which is a common printing device, when printing, a printing plate with printing pictures and texts is arranged on a plate cylinder, ink is transferred to the printing plate of the plate cylinder by an ink roller, the printing pictures and texts on the printing plate are transferred to a rubber cylinder (namely a transfer roller) by the plate cylinder and then are transferred to paper by the rubber cylinder, at present, a flexible printing plate is adopted and mainly used for printing corrugated boards with very uneven surfaces, and the surface of the printing plate is required to be kept in contact with the paper board, so that the flexible printing plate has good flexibility.

The existing Chinese patent with the publication number of CN209666538U proposes a printing roller mechanism and a printing machine convenient for plate changing, the printing machine comprises the printing roller mechanism convenient for plate changing, the printing roller mechanism comprises a printing roller cylinder, a plate locking rotating rod and a plate loading groove are arranged on the printing roller cylinder, a pore passage is arranged in the printing roller cylinder, the plate locking rotating rod is matched, rotated, adjusted and arranged in the pore passage, the plate loading groove is communicated with the pore passage, a plate locking groove is arranged on the plate locking rotating rod, the plate locking groove is connected and matched with the plate loading groove, a locking matching surface is further arranged on the printing roller cylinder, and a locking matching gap is formed between the locking matching surface and the plate locking rotating rod.

The above prior art solutions have the following drawbacks: the staff is changing the flexographic plate in-process, because the flexographic plate has flexible performance, the in-process of flexographic plate winding on the version cylinder, and the staff both need the coiling flexographic plate, also pulls the one end of flexographic plate, influences the working strength that the staff traded the version.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a not enough to prior art exists, the utility model aims at providing a version changing device of printing machine, it has the effect of being convenient for carry out the operation of changing version to the printing roller.

The above object of the present invention can be achieved by the following technical solutions:

a plate changing device of a printing machine comprises a machine frame and a printing roller, wherein a support is fixedly arranged on the machine frame above the printing roller, and a rotating roller for winding a flexible plate is detachably arranged on the support; the support fixedly connected with fixed roll, the support in it slides to be provided with the movable roll that is used for flat-open flat flexographic plate to decide the roll below, decide the roll both ends and all be provided with the through-hole, movable roll circumference fixedly connected with passes the actuating lever of through-hole, the actuating lever with be provided with the drive between the fixed roll the movable roll is towards the drive assembly of fixed roll motion.

Through adopting above-mentioned technical scheme, the commentaries on classics roller that will convolute the flexographic plate is placed on the support, the actuating lever moves down in the through-hole, the actuating lever drives the movable roller downstream, place the flexographic plate in the position between movable roller and fixed roll, the actuating lever drives the movable roller upward movement, movable roller and fixed roll extrude the flexographic plate, the realization is to the flat effect of exhibition of flexographic plate, ensure that the staff is pulling the flexographic plate in-process, the flexographic plate is by flat motion to the printing roller on, be convenient for realize the reprint operation to the printing roller.

The present invention may be further configured in a preferred embodiment as: the roller is characterized in that two arc grooves used for placing the end parts of the rotating rollers are formed in the support, the vertical sections of the arc grooves are semi-circular arcs, the arc radius of the sections of the arc grooves is equal to the diameter of the end face circle of the rotating rollers, and the support is provided with a limiting part for limiting the position of the rotating rollers.

Through adopting above-mentioned technical scheme, will change the both ends of roller and place in the arc inslot, arc inslot wall and commentaries on classics roller perisporium butt, under the effect of locating part, change the motion at roller both ends and be restricted.

The present invention may be further configured in a preferred embodiment as: the locating part sets up to being located the arc piece of arc groove top, the arc piece with the support setting of sliding, the vertical cross-section of arc piece sets up to the semicircle, the radius of arc piece cross-section circular arc equals change the radius of roller terminal surface circle, the arc piece with change roller circumference outer wall laminating.

Through adopting above-mentioned technical scheme, the drive arc piece moves towards the upward movement, will change the both ends of roller and place respectively at two arc inslots, and the drive arc piece moves down towards, and the arc piece move to arc groove top and with change roller terminal surface butt, realize the restriction effect to changeing the roller both ends, under the effect of locating part, change the motion at roller both ends and be restricted.

The present invention may be further configured in a preferred embodiment as: the support is fixedly connected with a sliding rod, the sliding rod is sleeved with a sliding block, a first spring is fixedly connected between the support and the sliding block, and the sliding rod is sleeved with the first spring.

Through adopting above-mentioned technical scheme, drive the slider at the slide bar upward movement when the arc piece, first spring is compressed, places after the arc groove when changeing the roller, withdraws the effort on the arc piece, under the elastic action of first spring resume original shape, the arc piece move to with change the roller on the perisporium butt.

The present invention may be further configured in a preferred embodiment as: the drive assembly comprises a handle fixedly connected with the drive rod and a second spring fixedly connected with the handle, the other end of the second spring is fixedly connected with the fixed roller, and the second spring is sleeved outside the drive rod.

Through adopting above-mentioned technical scheme, under the effect of applying an orientation downstream for the handle, the action roll downstream just separates with the fixed roll, and the second spring is compressed, places the flexographic plate in the position between fixed roll and the action roll, and under the elastic force effect of second spring resume original shape, the handle receives an effort of upward movement, and fixed roll and action roll extrude the flattening to the flexographic plate, and the second spring is still in compression state this moment.

The present invention may be further configured in a preferred embodiment as: the movable roller both ends all rotate and are connected with the movable block, be provided with on the support and be used for the movable block slides the spout that sets up, the movable block and spout horizontal cross-section sets up to "T" style of calligraphy.

Through adopting above-mentioned technical scheme, the motion of movable block orientation keeping away from the spout opening part is restricted, and the movable block moves along the length direction of spout, and the direction of motion of movable roller is unanimous with the length direction of spout, ensures the flat effect of extrusion exhibition of movable roller to the flexographic plate.

The present invention may be further configured in a preferred embodiment as: the moving roller and the fixed roller are circumferentially and externally fixedly connected with rubber sleeves.

Through adopting above-mentioned technical scheme, when the flexible version was extruded to movable roll and fixed roll, the rubber sleeve took place deformation, reduces the degree of wear to the flexible version.

To sum up, the utility model discloses a following at least one useful technological effect:

1. the two driving rods act simultaneously and move downwards, the movable roller is driven to move downwards, the movable block moves in the sliding groove, the second spring is compressed, the movable roller is separated from the fixed roller, the flexible plate penetrates through the position between the movable roller and the fixed roller, the movable roller moves upwards and is abutted against the flexible plate under the action of the elastic force of the second spring, and the flexible plate is pulled onto the printing roller by a worker and is in a flattening state, so that the plate changing operation of the printing roller is facilitated;

2. the drive arc piece moves up, and the slider moves up along the slide bar, and first spring is compressed, will change the both ends of roller and place respectively in two arc inslots, removes the effort to the arc piece, and under the elastic action of first spring resume original shape, the arc piece moves perisporium butt on changeing the roller, realizes the restriction effect to the roller position.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a plan view of the present invention.

Fig. 3 is a sectional view a-a in fig. 2.

Reference numerals: 1. a frame; 2. a printing roller; 3. a support; 4. rotating the roller; 5. fixing a roller; 6. a moving roller; 7. a through hole; 8. a drive rod; 9. an arc groove; 10. an arc block; 11. a slide bar; 12. a slider; 13. a first spring; 14. a handle; 15. a second spring; 16. a moving block; 17. a chute.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, for the plate changing device of the printing machine disclosed by the utility model, including organism and printing roller 2, frame 1 is fixedly provided with support 3 above printing, in order to change the flexographic plate on printing roller 2, can dismantle the roller 4 used for coiling the flexographic plate on support 3, be provided with the arc groove 9 used for placing the end of roller 4 on support 3, the arc groove 9 is that the vertical cross-section is set up to the semicircle, the arc radius of the cross-section of arc groove 9 equals the radius of the end face circle of roller 4, be provided with the locating part of restriction roller 4 position on support 3; the locating part is used for preventing to change roller 4 and from sliding out in rotating the in-process from arc groove 9, and the locating part sets up to the arc piece 10 that is located arc groove 9 top, and arc piece 10 slides with support 3 and sets up, and the vertical cross-section of arc piece 10 sets up to the semicircle, and the radius of the 10 vertical cross-section circular arcs of arc piece equals the radius of 4 terminal surface circles of commentaries on classics roller, and

arc piece

10 and 4 circumference outer wall laminating of commentaries on classics roller.

Referring to fig. 1 and 2, the arc block 10 is driven to move upwards, two ends of the rotating roller 4 are respectively placed in the two arc grooves 9, the arc block 10 is driven to move downwards, the arc block 10 moves to the position above the arc grooves 9 and is abutted against the end face of the rotating roller 4, the limiting effect on the two ends of the rotating roller 4 is achieved, and the rotating roller 4 rotates in the space between the arc block 10 and the arc grooves 9; in order to realize the automatic movement effect of the sliding block 12, the support 3 is fixedly connected with a sliding rod 11, the sliding rod 11 is sleeved with the sliding block 12 in a sliding manner, a first spring 13 is fixedly connected between the support 3 and the upper side surface of the sliding block 12, and the sliding rod 11 is sleeved with the first spring 13; when the arc block 10 drives the sliding block 12 to move upwards on the sliding rod 11, the first spring 13 is compressed, after the rotating roller 4 is placed in the arc groove 9, the acting force on the arc block 10 is removed, and under the elastic action of the first spring 13 restoring the original shape, the arc block 10 moves to abut against the upper peripheral wall of the rotating roller 4.

Referring to fig. 1 and 3, the staff adheres the one end of flexographic plate on printing roller 2, in order to ensure that the flexographic plate is in the effect of being flattened by being pulled to the in-process of printing roller 2, support 3 fixedly connected with fixed roller 5, support 3 slides in fixed roller 5 below and is provided with movable roller 6 that is used for flattening the flexographic plate, fixed roller 5 both ends all are provided with through-hole 7, through-hole 7 is along vertical direction for running through the setting, 6 circumference fixedly connected with of movable roller passes the actuating lever 8 of through-hole 7, two actuating levers 8 are located the both ends of movable roller 6 respectively, actuating lever 8 moves down in through-hole 7, actuating lever 8 drives movable roller 6 and moves down, place the flexographic plate in the position between movable roller 6 and fixed roller 5, actuating lever 8 drives movable roller 6 and moves up, movable roller 6 and fixed roller 5 extrude the flexographic plate, realize the flattening effect to the flexographic plate.

Referring to fig. 1 and 3, in order to achieve the effect of automatically flattening the flexible plate by the movable roller 6 and the fixed roller 5, a driving assembly for driving the movable roller 6 to move towards the fixed roller 5 is arranged between the driving rod 8 and the fixed roller 5, the driving assembly comprises a handle 14 fixedly connected with the driving rod 8 and a second spring 15 fixedly connected with the handle 14, the other end of the second spring 15 is fixedly connected with the fixed roller 5, and the second spring 15 is sleeved outside the driving rod 8; under the action of downward movement applied to the handle 14, the movable roller 6 moves downward and is separated from the fixed roller 5, the second spring 15 is compressed, the flexible plate is placed between the fixed roller 5 and the movable roller 6, under the action of the elastic force of the second spring 15 which restores the original shape, the handle 14 is subjected to the acting force of upward movement, the fixed roller 5 and the movable roller 6 press and flatten the flexible plate, and the second spring 15 is still in a compressed state.

Referring to fig. 1 and 3, in order to ensure the stability of the movement of the movable roller 6 along the vertical direction, both ends of the movable roller 6 are rotatably connected with movable blocks 16, a sliding groove 17 for the sliding arrangement of the movable blocks 16 is arranged on the bracket 3, the horizontal sections of the movable blocks 16 and the sliding groove 17 are both arranged in a "T" shape, the movement of the movable blocks 16 towards the opening far away from the sliding groove 17 is limited, the movable blocks 16 move along the length direction of the sliding groove 17, the movement direction of the movable roller 6 is consistent with the length direction of the sliding groove 17, and the extrusion and flattening effects of the movable roller 6 on the flexographic plate are ensured; move 5 equal fixedly connected with rubber sleeve of outside week of roller 6 and fixed roll, when moving roller 6 and fixed roll 5 extrude the flexographic plate, the rubber sleeve takes place deformation, reduces the degree of wear to the flexographic plate.

The implementation principle of the embodiment is as follows: the arc block 10 is driven to move upwards, the sliding block 12 moves upwards along the sliding rod 11, the first spring 13 is compressed, two ends of the rotating roller 4 are respectively placed in the two arc grooves 9, the acting force on the arc block 10 is removed, and under the elastic action of the first spring 13 restoring to the original shape, the arc block 10 moves to the upper peripheral wall of the rotating roller 4 to be abutted, so that the limiting effect on the position of the rotating roller 4 is realized; the staff pulls out the one end of flexographic plate, at this moment, act on and the downstream to two actuating levers 8 simultaneous action, move roller 6 and driven downstream, move piece 16 in spout 17 internal motion, second spring 15 is compressed, move roller 6 and the separation of fixed roll 5, pass the position between move roller 6 and the fixed roll 5 with the flexographic plate, under the spring action of second spring 15, move roller 6 upward motion and with the flexographic plate butt, the rubber sleeve takes place deformation, pull the flexographic plate to printing roller 2 along with the staff on, the flexographic plate is in the flat state of exhibition, be convenient for print roller 2's the reprint operation.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. A plate changing device of a printing machine comprises a machine frame (1) and a printing roller (2), and is characterized in that: a support (3) is fixedly arranged above the printing roller (2) on the machine frame (1), and a rotating roller (4) for winding a flexible plate is detachably arranged on the support (3); support (3) fixedly connected with fixed roll (5), support (3) in fixed roll (5) below is slided and is provided with movable roller (6) that are used for flat flexible version of exhibition, fixed roll (5) both ends all are provided with through-hole (7), movable roller (6) circumference fixedly connected with passes actuating lever (8) of through-hole (7), actuating lever (8) with be provided with the drive between fixed roll (5) movable roller (6) are towards the drive assembly of fixed roll (5) motion.

2. A plate changing device of a printing press according to claim 1, characterized in that: be provided with two on support (3) and be used for placing change arc groove (9) of roller (4) tip, arc groove (9) vertical cross-section sets up to the semicircle, arc groove (9) cross-section circular arc radius equals change the diameter of roller (4) terminal surface circle, be provided with the restriction on support (3) change the locating part of roller (4) position.

3. A plate changing device of a printing press according to claim 2, characterized in that: the locating part sets up to being located arc piece (10) of arc groove (9) top, arc piece (10) with support (3) slide the setting, the vertical cross-section of arc piece (10) sets up to the semicircle, the radius of arc piece (10) cross-section circular arc equals the radius of commentaries on classics roller (4) terminal surface circle, arc piece (10) with the laminating of commentaries on classics roller (4) circumference outer wall.

4. A plate changing device of a printing press according to claim 3, characterized in that: support (3) fixedly connected with slide bar (11), slide bar (11) cover is established and is slided and is equipped with slider (12), support (3) with fixedly connected with first spring (13) between slider (12), first spring (13) cover is located on slide bar (11).

5. A plate changing device of a printing press according to claim 4, wherein: the drive assembly include with actuating lever (8) fixed connection's handle (14) and with handle (14) fixed connection's second spring (15), the other end of second spring (15) with decide roller (5) fixed connection, second spring (15) cover is located outside actuating lever (8).

6. A plate changing device of a printing press according to claim 5, characterized in that: the movable roller is characterized in that the two ends of the movable roller (6) are rotatably connected with movable blocks (16), sliding grooves (17) used for the sliding of the movable blocks (16) are formed in the support (3), and the horizontal sections of the movable blocks (16) and the sliding grooves (17) are arranged to be T-shaped.

7. A plate changing device of a printing press according to claim 6, wherein: the moving roller (6) and the fixed roller (5) are fixedly connected with rubber sleeves in the circumferential direction.