An embossing device and embossing process for a gravure printing machine

Abstract

The present invention discloses an imprinting device and an imprinting process for a gravure printing machine. The imprinting device includes a bottom table, a vertical frame, a first supporting structure, a second supporting structure, an imprinting roller and a feeding roller; when the present invention does not perform imprinting work, the cleaning structure makes the cleaning part close to the feeding roller and the imprinting roller, and the cleaning structure is moved through the displacement structure to complete cleaning. When the displacement structure moves to the left and right ends, buffering can be carried out to prevent excessive extrusion of the vertical frame during displacement and ensure the cleaning effect on the left and right ends of the feeding roller and the imprinting roller; when the feeding roller and the imprinting roller are worn or different-shaped inks need to be imprinted, the limiting support for the feeding roller and the imprinting roller is released through the support structure, and then the first supporting structure is driven to move horizontally to release the limiting transmission of the imprinting roller and the feeding roller, and then the imprinting roller and the feeding roller are respectively removed from the two support structures for replacement use, so as to improve the maintenance efficiency and working efficiency of imprinting.

Description

Technical Field

[0001] The present invention relates to the technical field of imprinting devices, and specifically to an imprinting device for an intaglio printing press and its imprinting process. Background Art

[0002] The imprinting device of an intaglio printing press mainly consists of a loading roller, a feeding roller, and an imprinting roller. The imprinting device is a core component of a unit-type intaglio printing press, responsible for the transmission and imprinting of materials, and its main characteristics are high speed and high efficiency.

[0003] Currently, Chinese Patent Application No.: CN202321170778.8 discloses an imprinting device for a high-speed intaglio printing press, including a high-speed intaglio printing press. An upper feeding roller, an imprinting roller, and a feeding roller are installed inside the high-speed intaglio printing press. A first support block is installed on the high-speed intaglio printing press. A connecting column is rotatably installed inside the first support block. A connecting block is detachably installed on the connecting column. A screw rod is installed on the connecting block. A first bevel gear meshes with a second bevel gear. One end of a transmission shaft is installed on the second bevel gear, and the other end of the transmission shaft is installed on a motor.

[0004] During the use of the imprinting device of the prior art intaglio printing press, the cleaning head is usually displaced on the rotating roller by using a screw rod for cleaning. However, the position between the cleaning head and the rotating roller is fixed, and it is inconvenient to perform effective cleaning when using rotating rollers of different sizes. Moreover, after the rotating roller for imprinting is used for a long time, it is prone to wear, and it is inconvenient to replace and use, which affects the printing quality and reduces the maintenance efficiency and working efficiency of imprinting. Summary of the Invention

[0005] The purpose of the present invention is to provide an imprinting device for an intaglio printing press and its imprinting process to solve the problems raised in the above background art.

[0006] To achieve the above object, the present invention adopts the following technical solutions: An impression device of a gravure printing machine, comprising a base table, a vertical frame, a first support structure, a second support structure, an impression roller, a feeding roller, a support structure, a displacement structure, a cleaning structure and a first cylinder. A vertical frame is fixed in the middle of the top of the base table. The middle parts on both the left and right sides of the vertical frame are hollowed out. A first support structure and a second support structure are respectively arranged on both the left and right sides of the vertical frame. An impression roller and a feeding roller are respectively arranged on the upper and lower sides inside the first support structure and the second support structure. Support structures are rotatably connected to the right ends of both the impression roller and the feeding roller. A displacement structure is embedded in the top side inside the vertical frame. A cleaning structure is fastened to the bottom of the displacement structure. The middle part on the bottom side of the first support structure is connected to a first cylinder. Both the right sides of the two support structures are connected to the second support structure. The bottom of the second support structure is fastened to the base table. The cleaning structure is wrapped around the outer surfaces of the impression roller and the feeding roller, and the bottom of the cleaning structure is in sliding contact with the base table. The left side of the first cylinder is connected to the base table. A positioning structure is arranged at the lower left front of the vertical frame. The positioning structure includes a cushion block fixed to the vertical frame at the rear, a clamping block rotatably connected to the left side inside the cushion block, and a clamping column clamped to the left side of the bottom of the clamping block. The rear side of the clamping column is connected to the first support structure.

[0007] Preferably, the first support structure includes a support frame seat, sliding seats fixedly connected to the front and rear sides of the bottom of the support frame seat, a first connecting seat fastened to the bottom side inside the support frame seat, a second connecting seat slidably connected to the top side inside the support frame seat, two cross blocks fixedly connected to the bottoms of the front and rear sides of the second connecting seat, and two second cylinders respectively connected to the bottoms of the two cross blocks. The bottom side of the second cylinder is connected to the support frame seat. The middle part on the bottom side of the support frame seat is connected to the first cylinder. The two sliding seats are respectively slidably connected to the front and rear sides of the top of the base table. The left sides of both the first connecting seat and the second connecting seat are used to connect the output shaft of a driving motor. The middle part on the right side of the first connecting seat is connected to the impression roller. The middle part on the right side of the second connecting seat is connected to the feeding roller.

[0008] Preferably, strip-shaped grooves are arranged on both the front and rear sides of the support frame seat, and the two cross blocks respectively penetrate and slide inside the two strip-shaped grooves.

[0009] Preferably, the structure of the second support structure is obtained by respectively replacing the first connecting seat and the second connecting seat of the first support structure with two rectangular support blocks, and the two rectangular support blocks are respectively connected to the two support structures.

[0010] Preferably, the support structure includes a cylinder base fixed to the second support structure on the right side, an upper threaded sleeve and a lower threaded sleeve respectively slidably connected to the upper and lower sides inside the cylinder base, two limit posts respectively longitudinally slidably arranged in the middle on the left side of the upper threaded sleeve and the lower threaded sleeve, a bolt rod threadedly connected to the inside of the upper threaded sleeve and the lower threaded sleeve, and a plug inserted and rotated inside the left side of the cylinder base. The two limit posts are respectively embedded in the upper and lower sides inside the cylinder base, and the left side of the plug is fastened to the imprinting roller.

[0011] Preferably, arc grooves for engaging and rotating with the plug are formed on the left side of the bottom of the upper threaded sleeve and the left side of the top of the lower threaded sleeve.

[0012] Preferably, the displacement structure includes a first support piece embedded in the left side of the top of the vertical frame, two guide rods fixedly connected to the front and rear sides of the right part of the first support piece, a second support piece fixedly connected to the right ends of the two guide rods, a screw rotatably arranged in the middle on the inner sides of the first support piece and the second support piece, an internal threaded cylinder threadedly connected to the outer surface of the screw, a cover seat wrapped around the outer surface of the internal threaded cylinder, and a buffer assembly connected to the upper side inside the cover seat. The second support piece is embedded in the right side of the top of the vertical frame. The right side of the screw passes through and rotates in the middle on the inner side of the second support piece, and the right end of the screw is used to connect an external servo motor. The front and rear sides inside the cover seat are respectively slidably connected to the two guide rods, and the middle on the bottom of the cover seat is fastened to the cleaning structure. A rectangular card slot is arranged in the middle on the top of the internal threaded cylinder.

[0013] Preferably, the buffer assembly includes a positioning block whose bottom is engaged with the rectangular card slot on the internal threaded cylinder, a plug post integrally formed in the middle on the front part of the positioning block, a sliding piece slidably connected to the front side of the outer surface of the plug post, a spring connected to the middle on the top of the positioning block, and a positioning bolt abutted against the top side of the spring. A V-shaped groove is formed in the middle on the inner side of the sliding piece, and the plug post is inserted into the V-shaped groove and is in sliding contact with it. The sliding piece transversely penetrates and slides in the middle on the front side inside the cover seat, and the positioning bolt penetrates and is arranged on the top side inside the cover seat.

[0014] Preferably, the cleaning structure includes a first cleaning component fastened to the displacement structure at the top, two vertical rods fixedly connected to the front and rear sides of the bottom of the first cleaning component, and a second cleaning component fixedly connected to the bottoms of the two vertical rods. The bottom of the second cleaning component is in sliding contact with the bottom table. The structures and sizes of the first cleaning component and the second cleaning component are the same and are symmetrically arranged up and down. The first cleaning component is arranged on the top side of the imprinting roller, and the second cleaning component is arranged on the bottom side of the feeding roller.

[0015] Preferably, the second cleaning component includes a Y-shaped frame fixed to the front and rear sides of the top of two vertical rods, a third air cylinder installed on the left side of the Y-shaped frame, a Y-shaped sliding frame connected to the top output shaft of the third air cylinder, a first slider and a second slider respectively wrapped and sliding on the rear side and the front side of the top of the Y-shaped sliding frame, a first brush head connected to the middle side of the front part of the first slider, and a second brush head connected to the middle side of the rear part of the second slider. The first slider and the second slider are both arranged in an inclined shape, and the right sides of the first slider and the second slider are both slidably connected to the Y-shaped frame.

[0016] In addition, the present invention also provides an embossing process for an embossing device of a gravure printing machine, including the following steps:

[0017] S1. Place the raw material for embossing between the feeding roller and the embossing roller, and then make the embossing roller approach the feeding roller through the first supporting structure to perform embossing treatment on the raw material;

[0018] S2. When no embossing work is carried out, control the cleaning structure to make the internal cleaning parts approach the feeding roller and the embossing roller respectively, and then move the cleaning structure through the displacement structure to complete the cleaning of the feeding roller and the embossing roller. When the displacement structure moves to the left and right end parts, buffering can be carried out to prevent excessive extrusion of the vertical frame during displacement, and ensure the cleaning effect on the left and right end parts of the feeding roller and the embossing roller;

[0019] S3. When the feeding roller and the embossing roller are worn or different-shaped inks need to be embossed, release the limit support for the feeding roller and the embossing roller through the support structure, and then use the first air cylinder to drive the first supporting structure to move horizontally to release the limit transmission for the embossing roller and the feeding roller, and then move the embossing roller and the feeding roller out of the two support structures respectively to replace and use the embossing roller and the feeding roller.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] The present invention optimizes the setting of the support structure, the displacement structure and the cleaning structure. When the embossing work is not carried out, the cleaning structure is controlled to make the cleaning parts approach the feeding roller and the embossing roller respectively, and then the cleaning structure is moved through the displacement structure to complete the cleaning of the feeding roller and the embossing roller. When the displacement structure moves to the left and right ends, buffering can be carried out to prevent excessive extrusion of the vertical frame during displacement, and ensure the cleaning effect on the left and right ends of the feeding roller and the embossing roller. And under the action of the cleaning structure, the cleaning parts can approach the surfaces of the embossing rollers and feeding rollers of different sizes to improve the cleaning effect; when the feeding roller and the embossing roller are worn or different-shaped inks need to be embossed, the limit support for the feeding roller and the embossing roller is released through the support structure, and then the first cylinder is used to drive the first support structure to move horizontally to release the limit transmission for the embossing roller and the feeding roller, and then the embossing roller and the feeding roller are respectively removed from the two support structures for replacement use, so as to improve the maintenance efficiency and working efficiency of embossing.

[0022] The present invention optimizes the setting of the positioning structure. When the clamping block is stuck above the clamping column, it further plays a role in limiting the first support structure to prevent the first support structure from shifting and ensure the stability of the work. Strip-shaped grooves are arranged on the front and rear sides of the support frame seat, and two cross blocks respectively penetrate and slide inside the two strip-shaped grooves to play a role in limiting and ensure the stable longitudinal displacement of the cross blocks. The structure of the second support structure is obtained by replacing the first connecting seat and the second connecting seat of the first support structure with two rectangular support blocks respectively, and the two rectangular support blocks are respectively connected to the two support structures to facilitate changing the distance between the two support structures and ensure the parallelism and rotational stability of the embossing roller and the feeding roller.

[0023] A V-shaped groove is opened in the middle of the sliding piece of the present invention, and the insertion column is inserted into the V-shaped groove and is in sliding contact with it. When the sliding piece contacts the first support piece or the second support piece, the cooperation of the V-shaped groove and the insertion column makes the positioning block perform a longitudinal displacement action, so that the positioning block disengages from the rectangular card slot of the internal thread cylinder. The internal thread cylinder rotates with the screw to prevent excessive extrusion of the vertical frame. After the screw is reversed, under the action of the spring, a downward buffering and resetting force is provided for the positioning block to make the positioning block re-insert into the rectangular card slot, and then the cover seat is displaced in the other direction through the cooperation of the screw and the internal thread cylinder to drive the cleaning structure to displace horizontally and reciprocally, improving the cleaning effect on the feeding roller and the embossing roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic structural diagram of the present invention;

[0025] Figure 2 is a schematic structural diagram of the first support structure of the present invention;

[0026] Figure 3 For the present invention Figure 2Enlarged view of the local structure at A in the [specific object];

[0027] Figure 4 Structural schematic diagram of the support structure of the present invention;

[0028] Figure 5 Structural schematic diagram of the displacement structure of the present invention;

[0029] Figure 6 Structural schematic diagram of the connection between the internal thread cylinder and the buffer assembly of the present invention;

[0030] Figure 7 Structural schematic diagram of the cleaning structure of the present invention.

[0031] In the figure: base - 1, vertical frame - 2, first support structure - 3, second support structure - 4, embossing roller - 5, feeding roller - 6, support structure - 7, displacement structure - 8, cleaning structure - 9, first cylinder - 10, positioning structure - 11, support frame base - 31, sliding seat - 32, first connection seat - 33, second connection seat - 34, cross block - 35, second cylinder - 36, cushion block - 111, clamping block - 112, clamping column - 113, cylinder seat - 71, upper thread sleeve - 72, lower thread sleeve - 73, limit post - 74, bolt rod - 75, plug - 76, arc groove - 721, first support piece - 81, guide rod - 82, second support piece - 83, screw - 84, internal thread cylinder - 85, cover seat - 86, buffer assembly - 87, positioning block - 871, inserting column - 872, sliding piece - 873, spring - 874, positioning bolt - 875, V - shaped groove - 8731, first cleaning component - 91, vertical rod - 92, second cleaning component - 93, Y - shaped frame - 931, third cylinder - 932, Y - shaped sliding frame - 933, first sliding block - 934, second sliding block - 935, first brush head - 936, second brush head - 937. Detailed implementation manners

[0032] In order to further explain the technical solution of the present invention, the following will be elaborated in detail through specific embodiments.

[0033] Please refer to Figure 1, the present invention provides an imprinting device for a gravure printing machine, which includes a base table 1, a vertical frame 2, a first supporting structure 3, a second supporting structure 4, an imprinting roller 5, a feeding roller 6, a supporting structure 7, a displacement structure 8, a cleaning structure 9 and a first cylinder 10. A vertical frame 2 is fixed in the middle of the top of the base table 1. The middle parts on both the left and right sides of the vertical frame 2 are hollow. A first supporting structure 3 and a second supporting structure 4 are respectively arranged on both the left and right sides of the vertical frame 2, so that the first supporting structure 3 can make a lateral displacement movement in the hollow part inside the vertical frame 2. An imprinting roller 5 and a feeding roller 6 are respectively arranged on the upper and lower sides inside the first supporting structure 3 and the second supporting structure 4 to ensure the stability of the rotation of the imprinting roller 5 and the feeding roller 6. The right ends of the imprinting roller 5 and the feeding roller 6 are both rotatably connected to a supporting structure 7 to play a role in supporting and limiting the imprinting roller 5 and the feeding roller 6. After operating the supporting structure 7, it is convenient to replace and use the imprinting roller 5 and the feeding roller 6. A displacement structure 8 is embedded in the top side inside the vertical frame 2, and a cleaning structure 9 is fastened to the bottom of the displacement structure 8 to make the cleaning structure 9 laterally displace through the displacement structure 8 to complete the cleaning of the imprinting roller 5 and the feeding roller 6. The middle part of the bottom of the first supporting structure 3 is connected to a first cylinder 10, and the left side of the first cylinder 10 is connected to the base table 1 to change the lateral position of the first supporting structure 3 through the first cylinder 10. The right sides of both supporting structures 7 are connected to the second supporting structure 4, and the bottom of the second supporting structure 4 is fastened to the base table 1 to play a role in supporting and positioning. The cleaning structure 9 is wrapped around the outer surfaces of the imprinting roller 5 and the feeding roller 6, and the bottom of the cleaning structure 9 is in sliding contact with the base table 1 to ensure the stability of the cleaning structure 9, and under the action of the cleaning structure 9, it can approach the surfaces of the imprinting roller 5 and the feeding roller 6 of different sizes to improve the cleaning effect.

[0034] Please refer to Figure 1 , Figure 2 and Figure 3 , the present invention provides an imprinting device for a gravure printing machine. A positioning structure 11 is arranged at the lower left front of the vertical frame 2. The positioning structure 11 includes a cushion block 111 whose rear side is fixed to the vertical frame 2, a clamping block 112 rotatably connected to the left side inside the cushion block 111, and a clamping column 113 clamped to the left bottom of the clamping block 112. The rear side of the clamping column 113 is connected to the first supporting structure 3. When the clamping block 112 is clamped above the clamping column 113, it further plays a role in limiting the first supporting structure 3 to prevent the first supporting structure 3 from shifting and ensure the stability of the work.

[0035] Among them, the first support structure 3 includes a support frame base 31, sliding seats 32 fixedly connected to the front and rear sides of the bottom of the support frame base 31, a first connection seat 33 fastened to the inner bottom side of the support frame base 31, a second connection seat 34 slidably connected to the inner top side of the support frame base 31, two cross blocks 35 fixedly connected to the bottom sides of the front and rear sides of the second connection seat 34, and two second cylinders 36 respectively connected to the bottom sides of the two cross blocks 35. The bottom side of the second cylinder 36 is connected to the support frame base 31, and the middle side of the bottom of the support frame base 31 is connected to the first cylinder 10, so as to adjust the height position of the two cross blocks 35 driving the second connection seat 34 in the support frame base 31 under the action of the second cylinder 36. The two sliding seats 32 are respectively slidably connected to the front and rear sides of the top of the base table 1, so that the support frame base 31 can slide on the base table 1 through the sliding seats 32 to change the lateral position. The left sides of the first connection seat 33 and the second connection seat 34 are both used to connect the output shaft of the driving motor. The middle part of the right side of the first connection seat 33 is connected to the impression roller 5, and the middle part of the right side of the second connection seat 34 is connected to the feeding roller 6, so as to drive the impression roller 5 and the feeding roller 6 to rotate.

[0036] Among them, strip-shaped grooves are provided on both the front and rear sides of the support frame base 31, and the two cross blocks 35 respectively penetrate and slide inside the two strip-shaped grooves, playing a role of limiting to ensure the stable longitudinal displacement of the cross blocks 35. The structure of the second support structure 4 is obtained by respectively replacing the first connection seat 33 and the second connection seat 34 of the first support structure 3 with two rectangular support blocks, and the two rectangular support blocks are respectively connected to the two support structures 7, so as to change the distance between the two support structures 7 and ensure the parallelism and rotational stability of the impression roller 5 and the feeding roller 6.

[0037] Please refer to Figure 1 and Figure 4 As shown in, the present invention provides an impression device of an intaglio printing machine. The support structure 7 includes a cylinder base 71 fixedly connected to the right side of the second support structure 4, an upper threaded sleeve 72 and a lower threaded sleeve 73 respectively slidably connected to the upper and lower sides inside the cylinder base 71, two limit posts 74 respectively longitudinally slidably arranged in the middle of the left sides of the upper threaded sleeve 72 and the lower threaded sleeve 73, a bolt rod 75 threadedly connected to the inside of the upper threaded sleeve 72 and the lower threaded sleeve 73, and a plug 76 inserted and rotated inside the left side of the cylinder base 71. The two limit posts 74 are respectively embedded in the upper and lower sides inside the cylinder base 71. Under the action of the limit posts 74, the upper threaded sleeve 72 and the lower threaded sleeve 73 make longitudinal displacement movements, and by rotating the bolt rod 75, the upper threaded sleeve 72 and the lower threaded sleeve 73 are close to each other to limit and support the plug 76 inside. The left side of the plug 76 is fastened to the impression roller 5. Arc-shaped grooves 721 for engaging and rotating with the plug 76 are respectively provided on the left side of the bottom of the upper threaded sleeve 72 and the left side of the top of the lower threaded sleeve 73, so as to engage and limit the plug 76 to prevent the plug 76 from being displaced and deviated.

[0038] Please refer to Figure 1, Figure 5 , Figure 6 and Figure 7 , the present invention provides an impression device of a gravure printing machine. The displacement structure 8 includes a first support piece 81 embedded in the left side of the top of the vertical frame 2, two guide rods 82 fixedly connected to the front and rear sides of the right part of the first support piece 81, a second support piece 83 fixedly connected to the right ends of the two guide rods 82, a screw 84 rotatably arranged in the middle of the inner sides of the first support piece 81 and the second support piece 83, an internal thread cylinder 85 threadedly connected to the outer surface of the screw 84, a cover seat 86 wrapped around the outer surface of the internal thread cylinder 85, and a buffer assembly 87 connected to the upper side of the inner part of the cover seat 86. The second support piece 83 is embedded in the right side of the top of the vertical frame 2. When the screw 84 rotates, the cover seat 86 performs a lateral displacement action through the cooperation with the internal thread cylinder 85. And when the cover seat 86 moves to the left and right ends, it is buffered by the contact of the buffer assembly 87 with the first support piece 81 and the second support piece 83, preventing the screw 84 from rotating and stopping at a relatively slow speed and easily causing excessive extrusion to the first support piece 81 and the second support piece 83. The right side of the screw 84 penetrates and rotates in the middle of the inner side of the second support piece 83, and the right end of the screw 84 is used to connect an external servo motor to drive the screw 84 to rotate through the servo motor. The front and rear sides of the inner part of the cover seat 86 are respectively slidably connected to the two guide rods 82 to ensure the stability of the lateral displacement of the cover seat 86. The middle of the bottom of the cover seat 86 is fastened to the cleaning structure 9 to drive the cleaning structure 9 to perform a displacement action when the cover seat 86 performs a lateral displacement. A rectangular card slot is arranged in the middle of the top of the internal thread cylinder 85 to facilitate the cooperation with the buffer assembly 87 to achieve the buffering effect.

[0039] Among them, the buffer assembly 87 includes a positioning block 871 whose bottom is engaged with the rectangular card slot on the internal thread cylinder 85. After the positioning block 871 is inserted into the interior of the rectangular card slot, it limits the internal thread cylinder 85 to prevent the internal thread cylinder 85 from generating a rotation action. When the positioning block 871 is disengaged from the internal thread cylinder 85, the internal thread cylinder 85 rotates along with the screw 84. An insertion post 872 integrally formed in the middle of the front part of the positioning block 871, a sliding piece 873 slidably connected to the front side of the outer surface of the insertion post 872, a spring 874 connected to the middle of the top of the positioning block 871, and a positioning bolt 875 abutted against the top side of the spring 874. When the sliding piece 873 contacts the first support piece 81 or the second support piece 83, the sliding piece 873 causes the positioning block 871 to shift upward through the cooperation with the insertion post 872, so that the positioning block 871 is disengaged from the rectangular card slot of the internal thread cylinder 85. A V-shaped groove 8731 is formed in the middle of the sliding piece 873, and the insertion post 872 is inserted into the V-shaped groove 8731 and is in sliding contact with it, so as to make the positioning block 871 perform a longitudinal shifting action through the cooperation of the V-shaped groove 8731 and the insertion post 872. The sliding piece 873 transversely penetrates and slides in the middle of the front side inside the cover base 86, so that the sliding piece 873 moves horizontally, facilitating the shifting action of the positioning block 871. The positioning bolt 875 is disposed through the top side inside the cover base 86, and plays a role of limiting and supporting on the top of the positioning block 871, and provides a downward buffer and reset force for the positioning block 871 under the action of the spring 874.

[0040] Among them, the cleaning structure 9 includes a first cleaning component 91 whose top is fastened to the shifting structure 8, two vertical rods 92 fixedly connected to the front and rear sides of the bottom of the first cleaning component 91, and a second cleaning component 93 fixedly connected to the bottoms of the two vertical rods 92. The bottom of the second cleaning component 93 is in sliding contact with the bottom table 1. The structures and sizes of the first cleaning component 91 and the second cleaning component 93 are the same and are symmetrically arranged up and down. The first cleaning component 91 is disposed on the top side of the embossing roller 5, and the second cleaning component 93 is disposed on the bottom side of the feeding roller 6 to clean the embossing roller 5 and the feeding roller 6 respectively, and the first cleaning component 91 and the second cleaning component 93 can be close to contact the surfaces of the embossing roller 5 and the feeding roller 6 with different sizes to improve the cleaning effect.

[0041] Among them, the second cleaning component 93 includes a Y-shaped frame 931 fixedly connected to the front and rear sides of the top of two vertical rods 92, a third air cylinder 932 installed on the left side of the Y-shaped frame 931, a Y-shaped sliding frame 933 connected to the top output shaft of the third air cylinder 932, a first slider 934 and a second slider 935 respectively wrapped and sliding on the rear side and the front side of the top of the Y-shaped sliding frame 933, a first brush head 936 connected to the middle side of the front part of the first slider 934, and a second brush head 937 connected to the middle side of the rear part of the second slider 935. Under the action of the third air cylinder 932, the Y-shaped sliding frame 933 drives the first slider 934 and the second slider 935 to slide and shift, so that the first brush head 936 and the second brush head 937 approach or move away from each other. The first slider 934 and the second slider 935 are both arranged obliquely, and the right sides of the first slider 934 and the second slider 935 are both slidably connected to the Y-shaped frame 931, so as to change the position angle after the first slider 934 and the second slider 935 move.

[0042] The embossing process of the embossing device of a gravure printing machine according to the present invention is as follows:

[0043] First, place the raw material to be embossed between the feeding roller 6 and the embossing roller 5, and then start the second air cylinder 36 on the first supporting structure 3 and the second supporting structure 4 to make the embossing roller 5 approach the feeding roller 6, and then drive the embossing roller 5 and the feeding roller 6 to rotate to emboss the raw material;

[0044] Secondly, when the stamping work is not performed, the third cylinder 932 in the first cleaning brush component 91 and the second cleaning brush component 93 is controlled to start, and under the action of the third cylinder 932, the Y-shaped slide 933 drives the first slider 934 and the second slider 935 to slide and shift, so that the first brush head 936 and the second brush head 937 are close to each other, so that the brush head parts of the first cleaning brush component 91 and the second cleaning brush component 93 are respectively in contact with the surface of the stamping roller 5 and the feeding roller 6, and then the starting screw 84 is controlled to rotate. When the screw 84 rotates, the cover seat 86 is moved laterally on the guide rod 82 through the cooperation with the internal threaded cylinder 85, so that the cover seat 86 drives the first cleaning brush component 91 and the second cleaning brush component 93 to shift laterally to clean the surface of the stamping roller 5 and the feeding roller 6. When the cover seat 86 moves to the left and right ends, The sliding piece 873 is in contact with the first support piece 81 and the second support piece 83 for buffering. When the sliding piece 873 contacts the first support piece 81 or the second support piece 83, the sliding piece 873 cooperates with the plug post 872 to move the positioning block 871 upward, so that the positioning block 871 is disengaged from the rectangular slot of the internal threaded tube 85, and the internal threaded tube 85 is rotated with the screw 84 to prevent the opposing frame 2 from being squeezed. Subsequently, when the screw 84 is reversed, the sliding piece 873 is disengaged from the contact with the first support piece 81 or the second support piece 83, and the positioning block 871 is moved downward under the action of the spring 874 and then reinserted into the rectangular slot of the internal threaded tube 85, so that the internal threaded tube 85 drives the cover seat 86 to move toward the other side, thereby making the brush heads in the first cleaning component 91 and the second cleaning component 93 clean the surfaces of the embossing roller 5 and the feeding roller 6.

[0045] Third, when the feed roller 6 and the embossing roller 5 are worn or inks of different shapes need to be embossed, unscrew the bolt rod 75 to move the upper threaded sleeve 72 and the lower threaded sleeve 73 away from each other to release the limit of the plug 76, then break the block 112 away from the top of the clamping column 113, and then control the first cylinder 10 to start the first supporting structure 3 to move to the left to release the clamping limit on both sides of the feed roller 6 and the embossing roller 5, so as to remove the embossing roller 5 and the feed roller 6 from the cylinder seat 71 for replacement and use.

[0046] The above description is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An imprinting device for a gravure printing machine, comprising a bottom table (1) and a vertical frame (2) fixedly arranged in the middle of the top of the bottom table (1). The middle parts on both the left and right sides of the vertical frame (2) are hollow. It is characterized in that: It further includes a first support structure (3) and a second support structure (4) respectively arranged on the left and right sides of the vertical frame (2), an embossing roller (5) and a feeding roller (6) respectively arranged on the upper and lower sides inside the first support structure (3) and the second support structure (4), two support structures (7) respectively rotatably connected to the right ends of the embossing roller (5) and the feeding roller (6), a displacement structure (8) embedded in the top side inside the vertical frame (2), a cleaning structure (9) fastened to the bottom of the displacement structure (8), and a first cylinder (10) connected to the middle side of the bottom of the first support structure (3). Both the right sides of the two support structures (7) are connected to the second support structure (4). The bottom of the second support structure (4) is fastened to the base table (1). The cleaning structure (9) is wrapped around the outer surfaces of the embossing roller (5) and the feeding roller (6), and the bottom of the cleaning structure (9) is in sliding contact with the base table (1). The left side of the first cylinder (10) is connected to the base table (1). A positioning structure (11) is arranged at the lower left side of the front part of the vertical frame (2). The positioning structure (11) includes a cushion block (111) whose rear side is fixed to the vertical frame (2), a clamping block (112) rotatably connected to the left side inside the cushion block (111), and a clamping post (113) clamped to the left side of the bottom of the clamping block (112). The rear side of the clamping post (113) is connected to the first support structure (3). The support structure (7) includes a cylinder base (71) whose right side is fixed to the second support structure (4), an upper threaded sleeve (72) and a lower threaded sleeve (73) respectively slidably connected to the upper and lower sides inside the cylinder base (71), two limiting posts (74) respectively longitudinally slidably arranged in the middle of the left sides of the upper threaded sleeve (72) and the lower threaded sleeve (73), a bolt rod (75) threadedly connected to the inside of the upper threaded sleeve (72) and the lower threaded sleeve (73), and a plug (76) inserted and rotated inside the left side of the cylinder base (71). The two limiting posts (74) are respectively embedded in the upper and lower sides inside the cylinder base (71). The left side of the plug (76) is fastened to the embossing roller (5). Arc-shaped grooves (721) for engaging and rotating with the plug (76) are respectively formed on the left side of the bottom of the upper threaded sleeve (72) and the left side of the top of the lower threaded sleeve (73).The shifting structure (8) includes a first support piece (81) embedded in the left side of the top of the vertical frame (2), two guide rods (82) fixedly connected to the front and rear sides of the right part of the first support piece (81), a second support piece (83) fixedly connected to the right ends of the two guide rods (82), a screw (84) rotatably arranged in the middle of the inner sides of the first support piece (81) and the second support piece (83), an internal thread cylinder (85) threadedly connected to the outer surface of the screw (84), a cover base (86) wrapped around the outer surface of the internal thread cylinder (85), and a buffer assembly (87) connected to the upper side of the inside of the cover base (86). The second support piece (83) is embedded in the right side of the top of the vertical frame (2). The right side of the screw (84) passes through and rotates in the middle of the inner side of the second support piece (83), and the right end of the screw (84) is used to connect an external servo motor. The front and rear sides of the inside of the cover base (86) are respectively slidably connected to the two guide rods (82), and the middle of the bottom of the cover base (86) is fastened to the cleaning structure (9). A rectangular card slot is arranged in the middle of the top of the internal thread cylinder (85). The buffer assembly (87) includes a positioning block (871) whose bottom is engaged with the rectangular card slot on the internal thread cylinder (85), a plug post (872) integrally formed in the middle of the front of the positioning block (871), a sliding piece (873) slidably connected to the front side of the outer surface of the plug post (872), a spring (874) connected to the middle of the top of the positioning block (871), and a positioning bolt (875) abutted against the top side of the spring (874). A V-shaped groove (8731) is arranged in the middle of the inner side of the sliding piece (873), and the plug post (872) is inserted into the V-shaped groove (8731) and is in sliding contact with it. The sliding piece (873) transversely penetrates and slides in the middle of the front of the inside of the cover base (86). The positioning bolt (875) is arranged through the top of the inside of the cover base (86). The cleaning structure (9) includes a first cleaning component (91) whose top is fastened to the shifting structure (8), two vertical rods (92) fixedly connected to the front and rear sides of the bottom of the first cleaning component (91), and a second cleaning component (93) fixedly connected to the bottoms of the two vertical rods (92). The bottom of the second cleaning component (93) is in sliding contact with the bottom platform (1). The structures and sizes of the first cleaning component (91) and the second cleaning component (93) are the same and are symmetrically arranged up and down. The first cleaning component (91) is arranged on the top side of the embossing roller (5), and the second cleaning component (93) is arranged on the bottom side of the feeding roller (6).The second cleaning component (93) includes a Y-shaped frame (931) whose front and rear sides at the top are fixed to two vertical rods (92), a third cylinder (932) installed on the left side of the Y-shaped frame (931), a Y-shaped sliding frame (933) connected to the top output shaft of the third cylinder (932), a first slider (934) and a second slider (935) respectively wrapped and sliding on the rear side and the front side of the top of the Y-shaped sliding frame (933), a first brush head (936) connected to the middle side of the front part of the first slider (934), and a second brush head (937) connected to the middle side of the rear part of the second slider (935). The first slider (934) and the second slider (935) are both arranged in an inclined shape, and the right sides of the first slider (934) and the second slider (935) are both slidably connected to the Y-shaped frame (931).; 2. The imprinting device of a gravure printing machine according to claim 1, characterized in that: The first support structure (3) includes a support frame base (31), sliding seats (32) fixedly connected to the front and rear sides of the bottom of the support frame base (31), a first connection seat (33) fastened to the inner bottom side of the support frame base (31), a second connection seat (34) slidably connected to the inner top side of the support frame base (31), two cross blocks (35) fixedly connected to the bottoms of the front and rear sides of the second connection seat (34), and two second cylinders (36) respectively connected to the bottoms of the two cross blocks (35). The bottom side of the second cylinder (36) is connected to the support frame base (31), the middle side of the bottom of the support frame base (31) is connected to the first cylinder (10), the two sliding seats (32) are respectively slidably connected to the front and rear sides of the top of the base table (1), the left sides of the first connection seat (33) and the second connection seat (34) are both used to connect the output shafts of the driving motors, the middle part of the right side of the first connection seat (33) is connected to the embossing roller (5), and the middle part of the right side of the second connection seat (34) is connected to the feeding roller (6).

3. The imprinting device of a gravure printing machine according to claim 2, characterized in that: Strip-shaped grooves are provided on both the front and rear sides of the support frame base (31), and the two cross blocks (35) respectively penetrate and slide inside the two strip-shaped grooves.

4. The embossing process of the embossing device of a gravure printing machine according to any one of claims 1-3, characterized in that: It includes the following steps: S1. Place the raw material for embossing between the feeding roller (6) and the embossing roller (5), and then use the first support structure (3) to move the embossing roller (5) close to the feeding roller (6) to perform embossing treatment on the raw material; S2. When no embossing work is carried out, control the cleaning structure (9) to make the internal cleaning parts respectively close to the feeding roller (6) and the embossing roller (5), and then use the displacement structure (8) to move the cleaning structure (9) to complete the cleaning of the feeding roller (6) and the embossing roller (5). When the displacement structure (8) moves to the left and right ends, buffering can be carried out to prevent excessive extrusion of the upright frame (2) during displacement and ensure the cleaning effect of the left and right end positions of the feeding roller (6) and the embossing roller (5); S3. When the feeding roller (6) and the embossing roller (5) are worn or different-shaped inks need to be embossed, use the support structure (7) to release the limit support for the feeding roller (6) and the embossing roller (5), and then use the first cylinder (10) to drive the first support structure (3) to move horizontally to release the limit transmission for the embossing roller (5) and the feeding roller (6), and then move the embossing roller (5) and the feeding roller (6) out of the two support structures (7) respectively to replace and use the embossing roller (5) and the feeding roller (6).

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