CN211684064U

CN211684064U - Printing machine convenient to change version

Info

Publication number: CN211684064U
Application number: CN201922375383.1U
Authority: CN
Inventors: 刘满堂; 蒋建祥; 张文高
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 printing machine convenient for changing plate, which comprises a machine body and a plate roller, wherein the machine body is fixedly connected with a support at both ends of the plate roller, the support is connected with the plate roller in a rotating way, the support is provided with two positioning rings sleeved outside the plate roller in a sliding way, the support is fixedly connected with a support rod, and a driving piece for driving the positioning rings to move is arranged in the support rod; the locating ring slides and is provided with the fixed block, fixed block fixedly connected with is used for pushing down the preforming of flexographic plate, the locating ring with be provided with the extrusion piece that the extrusion pressed from both sides tight flexographic plate between the preforming. The utility model discloses an above-mentioned technical scheme realizes the restriction effect to flexographic plate coiling position, and the staff of being convenient for promotes the work efficiency that the version cylinder traded the version to the adhesion operation of flexographic plate.

Description

Printing machine convenient to change version

Technical Field

The utility model belongs to the technical field of lithography apparatus's technique and specifically relates to a printing machine convenient to reprint 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: when the plate cylinder is replaced with the printing plate, the flexible printing plate is wound on the plate cylinder, but in the process of manually winding the flexible printing plate, the flexible printing plate is easy to shift in position in the winding process, so that the flexible printing plate is not a complete circle on the plate cylinder, and the printing quality is influenced.

SUMMERY OF THE UTILITY MODEL

The printing machine comprises a machine frame, a flexible plate cylinder, a flexible plate, a first fixing device, a second fixing device, a first fixing device and a second fixing device.

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

a printing machine convenient for plate changing comprises a machine body and a plate roller, wherein supports are fixedly connected to two ends of the machine body at the plate roller, the supports are rotatably connected with the plate roller, two positioning rings sleeved outside the plate roller are arranged on the supports in a sliding mode, the supports are fixedly connected with supporting rods, and driving pieces for driving the positioning rings to move are arranged in the supporting rods; the locating ring slides and is provided with the fixed block, fixed block fixedly connected with is used for pushing down the preforming of flexographic plate, the locating ring with be provided with the extrusion piece that the extrusion pressed from both sides tight flexographic plate between the preforming.

By adopting the technical scheme, when a worker replaces the flexible plate, the support rod drives the positioning ring to move under the action of the driving piece, the positioning ring moves to be sleeved outside the plate roller, one end of the flexible plate is bonded with the printing roller, and the flexible plate is wound on the plate roller under the limiting action of the two positioning rings; under the effect of extruded article, the fixed block is driven the internal motion downwards, and the preforming follows the fixed block and moves together, and the preforming is fixed the tip extrusion of flexographic plate on the printing roller, and the staff of being convenient for is to the fixed effect of bonding of flexographic plate.

The present invention may be further configured in a preferred embodiment as: the driving piece comprises a sliding rod fixedly arranged with the positioning ring, the supporting rod is arranged in a hollow mode and faces towards one end of the plate roller, the opening is formed in one end of the plate roller, and the sliding rod is connected in the supporting rod in a sliding mode.

Through adopting above-mentioned technical scheme, the drive slide bar moves towards the version cylinder in branch, and the slide bar drives the holding ring and moves outside the version cylinder, and outside the version cylinder was located to the holding ring cover, with the both sides of flexographic plate respectively with the side butt of holding ring, accomplish the limiting displacement to flexographic plate coiling position.

The present invention may be further configured in a preferred embodiment as: the supporting rod is fixedly connected with a limiting plate, a through hole used for the sliding rod to penetrate out is formed in the limiting plate, the sliding rod is far away from one end of the positioning ring, the disc is fixedly connected with the positioning ring, and the diameter of the end face circle of the disc is larger than the aperture of the through hole.

Through adopting above-mentioned technical scheme, when the slide bar moved in branch, the slide bar drove the disc and moved to the position of through-hole, and the motion of disc is restricted by the limiting plate, and at this moment, the holding ring moved outside the version cylinder, realized holding size effect of holding ring movement distance, and equal the disc from branch tip motion to the distance that moves when the limiting plate.

The present invention may be further configured in a preferred embodiment as: the sliding rod is characterized in that two symmetrical convex blocks are fixedly connected in the circumferential direction, a sliding groove used for sliding of the convex blocks is formed in the supporting rod, the sliding groove is formed in the axial direction of the supporting rod, and two ends of the sliding groove are arranged in a closed mode.

Through adopting above-mentioned technical scheme, along with the slide bar slides in branch, the lug moves in the spout, and the rotation of slide bar is by lug and spout restriction, ensures the stability of holding ring motion in-process.

The present invention may be further configured in a preferred embodiment as: the inner wall of the positioning ring is fixedly connected with a rubber ring, and the rubber ring is abutted to the circumferential outer wall of the plate roller.

Through adopting above-mentioned technical scheme, rubber ring and version cylinder circumference outer wall butt, rubber ring takes place deformation, reduces the degree of wear between holding ring and the version cylinder.

The present invention may be further configured in a preferred embodiment as: the locating ring fixedly connected with extrusion pole, the fixed block cover is located on the extrusion pole, the extruded piece sets up to the spring, the spring housing is located outside the extrusion pole, the both ends of spring respectively with preforming and locating ring fixed connection.

Through adopting above-mentioned technical scheme, place the flexographic plate tip in the preforming below, under the elastic force effect of spring, the preforming is driven towards version cylinder motion, and when preforming and flexographic plate butt, the spring is in compression state, ensures the squeezing action to the flexographic plate.

The present invention may be further configured in a preferred embodiment as: the vertical section of the pressing sheet is set to be an arc, and the radius of the arc of the section of the pressing sheet is equal to the diameter of the end face circle of the plate roller.

Through adopting above-mentioned technical scheme, the preforming move to with the version cylinder on the position of flexographic plate butt, the preforming with the extrusion of flexographic plate fix on the version cylinder, the preforming is with the tip extrusion of flexographic plate, prevent that the flexographic plate is loose on the version cylinder.

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

1. the sliding rod is driven to move in the supporting rod, the convex block moves in the sliding groove, the sliding rod drives the positioning ring to move out of the plate roller, the disc moves to the position of the limiting plate, the movement of the supporting rod is limited, and the positioning ring is sleeved outside the plate roller;

2. the drive fixed block moves up along the stripper bar, and the preforming moves to version cylinder top, and the spring is extruded and is compressed, treats that the flexography is convoluteed and accomplishes the back, removes the effort to on the fixed block, and the preforming is driven the downstream, and the preforming extrudees the tip of flexography, and the staff of being convenient for bonds the flexography.

Drawings

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

Fig. 2 is a schematic view of the positioning ring, the supporting rod, the sliding rod and the disc of the present invention.

Fig. 3 is a plan view of the present invention.

Fig. 4 is a partial structural view of a section a-a in fig. 3.

Reference numerals: 1. a body; 2. a plate cylinder; 3. a support; 4. a positioning ring; 5. a strut; 6. a fixed block; 7. tabletting; 8. a slide bar; 9. a limiting plate; 10. a through hole; 11. a disc; 12. a chute; 13. a bump; 14. a spring; 15. the rod is squeezed.

Detailed Description

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

Referring to fig. 1, for the utility model discloses a printing machine convenient to reprint, including organism 1 and version cylinder 2, be provided with the flexographic plate on the version cylinder 2, the flexographic plate is used for the pattern rendition on the paper, when printing different patterns on the paper, need change different flexographic plates, organism 1 is in the equal fixedly connected with support 3 in the both ends of version cylinder 2, support 3 rotates with version cylinder 2 to be connected, support 3 slides and is provided with two covers and locates the outer holding ring 4 of version cylinder 2, under the limiting action of two holding rings 4, the position that the flexographic plate was convoluteed is restricted, support 3 fixedly connected with branch 5, be provided with the driving piece that drives holding ring 4 motion in the branch 5, the driving piece includes the slide bar 8 with holding ring 4 fixed connection, slide bar 8 and branch 5 sliding connection.

Referring to fig. 1 and 2, when the flexographic plate needs to be replaced, in order to achieve the effect of limiting the winding position on the flexographic plate, the driving piece comprises a sliding rod 8 fixedly connected with a positioning ring 4, a supporting rod 5 is arranged in a hollow manner, one end, facing the plate roller 2, of the supporting rod 5 is arranged in an opening manner, the sliding rod 8 is connected into the supporting rod 5 in a sliding manner, the sliding rod 8 is driven to move towards the plate roller 2 in the supporting rod 5, the sliding rod 8 drives the positioning ring 4 to move out of the plate roller 2, the positioning ring 4 is sleeved outside the plate roller 2, two sides of the flexographic plate are respectively abutted against the side edges of the positioning ring 4, and the limiting effect on the winding position; the inner wall of the positioning ring 4 is fixedly connected with a rubber ring, the rubber ring is abutted against the circumferential outer wall of the plate roller 2, the rubber ring deforms, and the abrasion degree between the positioning ring 4 and the plate roller 2 is reduced.

Referring to fig. 2 and 3, in order to realize the sizing conveying effect on the positioning ring 4, a limiting plate 9 is fixedly connected to an opening of the supporting rod 5, a through hole 10 through which a sliding rod 8 penetrates is formed in the limiting plate 9, a disc 11 is fixedly connected to one end, far away from the positioning ring 4, of the sliding rod 8, the diameter of the end face of the disc 11 is larger than the aperture of the through hole 10, and the circumferential direction of the disc 11 is abutted against the inner wall of the supporting rod 5; when the slide bar 8 moves in the support rod 5, the slide bar 8 drives the disc 11 to move to the position of the through hole 10, the movement of the disc 11 is limited by the limiting plate 9, at the moment, the positioning ring 4 moves out of the plate roller 2, the size-fixing effect of the movement distance of the positioning ring 4 is achieved, and the movement distance is equal to the movement distance of the disc 11 when the disc moves from the end part of the support rod 5 to the limiting plate 9.

Referring to fig. 2 and 4, the sliding rod 8 is circumferentially and fixedly connected with two symmetrically arranged protruding blocks 13, the inner wall of the supporting rod 5 is provided with a sliding groove 12 for the protruding blocks 13 to slide, the sliding groove 12 is arranged along the axial direction of the supporting rod 5, two ends of the sliding groove 12 are arranged in a closed manner, the protruding blocks 13 move in the sliding groove 12 along with the sliding of the sliding rod 8 in the supporting rod 5, the rotation of the sliding rod 8 is limited by the protruding blocks 13 and the sliding groove 12, and the stability of the positioning ring 4 in the moving process.

Refer to fig. 2, the staff bonds the one end and the version cylinder 2 of flexographic plate, under the effect of two holding rings 4, the flexographic plate winding is between two holding rings 4, after the coiling of flexographic plate is accomplished, for the convenience of the staff is firm with its adhesion, holding ring 4 slides and is provided with

fixed block

6, 6 fixedly connected with of fixed block is used for pushing down preforming 7 of flexographic plate, 7 vertical cross-sections of preforming set up to the circular arc, the cross-section circular arc radius of preforming 7 equals the terminal surface circle diameter of version cylinder 2, preforming 7 move to with the position of the last flexographic plate butt of version cylinder 2, preforming 7 fixes the extrusion of flexographic plate on version cylinder 2, preforming 7 extrudees the tip of flexographic plate, it is loose on version cylinder 2 to prevent the flexographic plate, realize the effect of supplementary staff adhesion flexographic plate.

Referring to fig. 2, an extrusion part for extruding and clamping the flexible plate is arranged between the positioning ring 4 and the pressing plate 7, the positioning ring 4 is fixedly connected with an extrusion rod 15, the fixed block 6 is sleeved outside the extrusion rod 15, the extrusion part is provided with a spring 14, the spring 14 is sleeved outside the extrusion part, and two ends of the spring 14 are respectively and fixedly connected with the upper end of the pressing plate 7 and the positioning ring 4; drive preforming 7 upward movement places the flexographic plate tip in preforming 7 below, and under spring 14's elasticity effect, preforming 7 is driven towards version cylinder 2 motion, and when preforming 7 and flexographic plate butt, spring 14 is in compression state, ensures the squeezing action to the flexographic plate.

The implementation principle of the embodiment is as follows: the slide bar 8 is driven to move in the support bar 5, the lug 13 moves in the chute 12, the slide bar 8 drives the positioning ring 4 to move out of the plate roller 2, the disc 11 moves to the position of the limiting plate 9, the movement of the support bar 5 is limited, and the positioning ring 4 is sleeved outside the plate roller 2; drive fixed block 6 moves up along the extrusion stem 15, preforming 7 moves to version cylinder 2 tops, spring 14 is extruded and is compressed, adhere the one end of flexographic plate in 2 circumference of version cylinder, under the restriction of two holding rings 4, the flexographic plate is convoluteed on version cylinder 2, treat the completion back of coiling of flexographic plate, remove the effort to fixed block 6, preforming 7 is driven the downstream, preforming 7 extrudees the tip of flexographic plate, the staff of being convenient for bonds the flexographic plate, accomplish the bonding effect to the flexographic plate.

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. The utility model provides a printing machine convenient to reprint, includes organism (1) and version cylinder (2), its characterized in that: the machine body (1) is fixedly connected with supports (3) at two ends of the plate roller (2), the supports (3) are rotatably connected with the plate roller (2), the supports (3) are slidably provided with two positioning rings (4) sleeved outside the plate roller (2), the supports (3) are fixedly connected with supporting rods (5), and driving pieces for driving the positioning rings (4) to move are arranged in the supporting rods (5); the flexible plate pressing device is characterized in that a fixing block (6) is arranged on the positioning ring (4) in a sliding mode, a pressing sheet (7) used for pressing the flexible plate is fixedly connected to the fixing block (6), and an extrusion piece used for extruding and clamping the flexible plate is arranged between the positioning ring (4) and the pressing sheet (7).

2. A printing press for facilitating plate changeovers according to claim 1, characterised in that: the driving piece comprises a sliding rod (8) fixedly arranged with the positioning ring (4), the supporting rod (5) is arranged in a hollow mode and faces towards one end of the plate roller (2) and is arranged in an opening mode, and the sliding rod (8) is connected in the supporting rod (5) in a sliding mode.

3. A printing press for facilitating plate change according to claim 2, wherein: branch (5) fixedly connected with limiting plate (9), be provided with on limiting plate (9) and be used for through-hole (10) that slide bar (8) were worn out, slide bar (8) keep away from in the one end fixedly connected with disc (11) of holding ring (4), disc (11) terminal surface circle diameter is greater than the aperture of through-hole (10).

4. A printing press for facilitating plate changeovers according to claim 3, characterised in that: the sliding rod (8) is circumferentially and fixedly connected with two symmetrically arranged convex blocks (13), sliding grooves (12) used for sliding of the convex blocks (13) are formed in the supporting rod (5), the sliding grooves (12) are arranged along the axial direction of the supporting rod (5), and two ends of each sliding groove (12) are arranged in a closed mode.

5. A printing press for facilitating plate changeovers according to claim 4, characterised in that: the inner wall of the positioning ring (4) is fixedly connected with a rubber ring, and the rubber ring is abutted to the circumferential outer wall of the plate roller (2).

6. A printing press for facilitating plate changeovers according to claim 5, characterised in that: holding ring (4) fixedly connected with stripper bar (15), fixed block (6) cover is located on stripper bar (15), the extruded piece sets up to spring (14), spring (14) cover is located outside stripper bar (15), the both ends of spring (14) respectively with preforming (7) and holding ring (4) fixed connection.

7. A printing press for facilitating plate changeovers according to claim 6, characterised in that: the vertical section of the pressing sheet (7) is set to be an arc, and the radius of the arc of the section of the pressing sheet (7) is equal to the diameter of the end face circle of the plate roller (2).