Winding anti-wrinkling mechanism of photogravure press
By designing structures such as interlaced and distributed load shafts and limit sheets, the problem of loosening and wrinkling of the hard film of the gravure printing press is solved, and a higher quality winding effect is achieved.
Patent Information
- Application Number
- CN202422124768.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-30
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-08-30
AI Technical Summary
During the printing process of a gravure printing press, the distance between the hard film between the discharge port and the winding mechanism leads to slack, which prone to wrinkles and reduces the winding quality.
A winding and anti-wrinkle mechanism of a gravure printing press is designed, including two staggered load-bearing shafts. Through the cooperation of the bidirectional lead screw and the connecting strip, it can be away from each other or approached to adjust the tight state of the hard membrane; at the same time, a limiting sheet and a pressing sheet are set to prevent the hard membrane from deviating and flipping along the edge.
It effectively prevents the occurrence of wrinkles during the winding process, improves the winding quality, and ensures that the hard membrane does not deviate or flips along the edge during the winding process.
Smart Images
Figure CN223016062U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of the rewinding of printing machines, in particular to a wrinkle prevention mechanism for the rewinding of an intaglio printing machine. Background Art
[0002] An intaglio printing machine is a machine that uses an intaglio plate for printing. During the printing process, the entire surface of the printing plate cylinder is inked, and a doctor blade is used to scrape off the ink on the blank part of the plate surface, leaving the ink on the graphic part. Then, the paper is passed through, and the impression cylinder presses on the back of the paper, so that the ink in the recessed part is directly transferred to the paper surface. Finally, the printed paper is wound up. This type of printing machine has a wide range of applications and is suitable for soft thin plastic films, as well as harder PET, OPP and other rigid films, and also rigid coated paper, double copper paper, etc.
[0003] However, during the production of some rigid films, since there is a certain distance between the final discharge port of the printing machine and the rewinding mechanism, this distance is likely to cause the rigid film to become loose and wrinkle, thus reducing the rewinding quality.
[0004] Therefore, it is necessary to provide a new wrinkle prevention mechanism for the rewinding of an intaglio printing machine to solve the above technical problems. Summary of the Utility Model
[0005] The purpose of the utility model is to provide a wrinkle prevention mechanism for the rewinding of an intaglio printing machine that can prevent wrinkles caused by relaxation and improve the rewinding quality.
[0006] To solve the above technical problems, the rewinding anti-wrinkle mechanism of the intaglio printing press provided by the utility model includes: a first side frame plate and a second side frame plate. On the side where the first side frame plate and the second side frame plate are close to each other, two guiding rollers are rotatably installed. The two guiding rollers are staggeredly distributed. A first mounting panel and a second mounting panel are provided between the first side frame plate and the second side frame plate. The first mounting panel is fixedly connected to the first side frame plate, and the second mounting panel is fixedly connected to the second side frame plate. Two bearing shafts are provided between the first mounting panel and the second mounting panel. The two bearing shafts are staggeredly distributed. Both of the two bearing shafts penetrate through the second mounting panel and are slidably connected to the second mounting panel. Coiling rollers are rotatably sleeved on both of the two bearing shafts. A U-shaped frame is fixedly installed on the side of the first mounting panel away from the second mounting panel. A bidirectional lead screw is rotatably installed in the U-shaped frame. Two connecting bars are threadedly installed on the bidirectional lead screw. Both of the two connecting bars penetrate through the first mounting panel and are slidably connected to the first mounting panel. Cross connecting arms are fixedly installed on the sides of both of the two connecting bars away from the first side frame plate. One ends of the two bearing shafts are respectively fixedly connected to the two cross connecting arms. The same U-shaped frame is fixedly installed on the same-side of the first side frame plate and the second side frame plate. Linkage shafts are rotatably installed on the inner walls of both sides of the U-shaped frame. A winding roller is fixedly installed at one ends of the two linkage shafts close to each other by bolts. A reduction motor is fixedly installed on the outer wall of one side of the U-shaped frame. The output shaft of the reduction motor is fixedly connected to one end of one of the linkage shafts.
[0007] Preferably, a hand rocker is fixedly installed at the top end of the bidirectional lead screw. An electric push rod is fixedly installed at the top of the first side frame plate. An arc-shaped anti-slip piece is fixedly installed on the output shaft of the electric push rod. The inner wall of the arc-shaped anti-slip piece abuts against the hand rocker.
[0008] Preferably, a clamping mechanism is provided on both of the two bearing shafts to prevent the hard film from running off track.
[0009] Preferably, the clamping mechanism includes two folding rods. Both of the two folding rods are fixedly installed on the bearing shaft. Limit pieces are fixedly installed on the sides of both of the two folding rods close to each other. The bottoms of the two limit pieces are in contact with the outer wall of the coiling roller. A cross bar is fixedly installed at the tops of the two limit pieces. An adjusting screw is rotatably installed on the cross bar. A connecting plate is threadedly installed on the adjusting screw. Two guiding columns are slidably installed on the cross bar. One ends of the two guiding columns away from the coiling roller are fixedly connected to the connecting plate. Pressing pieces are fixedly installed at one ends of the two guiding columns close to the coiling roller. The sides of the two pressing pieces away from each other are respectively in contact with the two limit pieces.
[0010] Preferably, two rectangular sliding openings are formed in the first mounting panel, and the two connecting bars respectively penetrate through the two rectangular sliding openings and are in contact with the inner walls of the corresponding rectangular sliding openings.
[0011] Preferably, two open slideways are formed in the second mounting panel, and the two bearing shafts respectively penetrate through the two open slideways and are in contact with the inner walls of the corresponding open slideways.
[0012] Preferably, two stabilizing plates are fixedly installed on one side of the first mounting panel away from the second mounting panel. One side of each of the two stabilizing plates is fixedly connected to the inner wall of one side of the C-shaped frame, and the bidirectional lead screw penetrates through the two stabilizing plates and is movably connected to the two stabilizing plates.
[0013] Compared with the related art, the rewinding anti-wrinkle mechanism of the intaglio printing machine provided by the present invention has the following beneficial effects:
[0014] The present invention provides a rewinding anti-wrinkle mechanism for an intaglio printing machine. By arranging two bearing shafts that can move away from or close to each other, the loose rigid film can be adjusted to a taut state, thus preventing the occurrence of wrinkles during the rewinding process. Moreover, by arranging the limiting pieces, the edges of the rigid film can be limited, thereby preventing the rigid film from running off track, and the pressing pieces can prevent the edges of the rigid film from turning up, further reducing the occurrence of wrinkles. Thus, the rewinding quality is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 is a schematic structural diagram of a preferred embodiment of the rewinding anti-wrinkle mechanism of the intaglio printing machine provided by the present invention;
[0016] Figure 2 is a top view structural diagram of the present invention;
[0017] Figure 3 is a schematic structural diagram of the connection structure between the second side frame plate and the second mounting panel of the present invention;
[0018] Figure 4 is an assembly schematic diagram of the first mounting panel and the second mounting panel of the present invention;
[0019] Figure 5 is a schematic internal structure diagram of the C-shaped frame of the present invention;
[0020] Figure 6 is an assembly schematic diagram of the bearing shaft and the roller of the present invention.
[0021] Reference numerals in the figure: 1, the first side frame plate; 2, the second side frame plate; 3, the guide roller; 4, the first mounting panel; 5, the second mounting panel; 6, the C-shaped frame; 7, the bidirectional lead screw; 8, the connecting strip; 9, the transverse connecting arm; 10, the bearing shaft; 11, the winding roller; 12, the U-shaped frame; 13, the linkage shaft; 14, the winding roller; 15, the folding rod; 16, the limiting piece; 17, the cross bar; 18, the adjusting screw; 19, the connecting plate; 20, the guide post; 21, the pressing piece. Detailed implementation manners
[0022] The present utility model will be further described below in conjunction with the accompanying drawings and the implementation manners.
[0023] Please refer to Figures 1-6 , wherein, Figure 1 is a schematic structural diagram of a preferred embodiment of the winding anti-wrinkle mechanism of the gravure printing machine provided by the present utility model; Figure 2 is a top view structural diagram of the present utility model; Figure 3 is a schematic connection structural diagram of the second side frame plate and the second mounting panel in the present utility model; Figure 4 is an assembly schematic diagram of the first mounting panel and the second mounting panel in the present utility model; Figure 5 is a schematic internal structural diagram of the C-shaped frame in the present utility model;
[0024] Figure 6This is an assembly schematic diagram of the bearing shaft and the winding roller in the present utility model. The anti-wrinkle mechanism for winding of the gravure printing machine includes: a first side frame plate 1 and a second side frame plate 2, and two guiding rollers 3 are rotatably installed on the side where the first side frame plate 1 and the second side frame plate 2 are close to each other. The two guiding rollers 3 are staggered, one above the other, and the distance between the two guiding rollers 3 is in a horizontal state, which can allow the hard film to pass horizontally between them to play a guiding role. A first mounting panel 4 and a second mounting panel 5 are provided between the first side frame plate 1 and the second side frame plate 2. The first mounting panel 4 is fixedly connected to the first side frame plate 1, and the second mounting panel 5 is fixedly connected to the second side frame plate 2. Two bearing shafts 10 are provided between the first mounting panel 4 and the second mounting panel 5. The two bearing shafts 10 are staggered, one above the other. Different from the guiding rollers 3, the distance between them is larger, which can mainly stretch the hard film so that the hard film is wound in a taut state. Both of the two bearing shafts 10 penetrate through the second mounting panel 5 and are slidably connected to the second mounting panel 5. Winding rollers 11 are rotatably sleeved on both of the two bearing shafts 10. Two stabilizing plates are fixed to the side of the first mounting panel 4 away from the second mounting panel 5. The same U-shaped frame 6 is fixed to the side of the two stabilizing plates close to the first side frame plate 1. A bidirectional lead screw 7 is rotatably installed in the U-shaped frame 6. The bidirectional lead screw 7 penetrates through the two stabilizing plates and is movably connected to the two stabilizing plates. Two connecting bars 8 are threadedly installed on the bidirectional lead screw 7. Both of the two connecting bars 8 penetrate through the first mounting panel 4 and are slidably connected to the first mounting panel 4. A transverse connecting arm 9 is fixed to the side of both of the two connecting bars 8 away from the first side frame plate 1. One end of each of the two bearing shafts 10 is fixedly connected to one of the two transverse connecting arms 9. In this way, the rotation of the bidirectional lead screw 7 can drive the two bearing shafts 10 to move relative to each other. A hand rocker is fixed to the top of the bidirectional lead screw 7. An electric push rod is fixed to the top of the first side frame plate 1, and an arc-shaped anti-slip piece is fixed to the output shaft thereof. The inner wall of the arc-shaped anti-slip piece abuts against the hand rocker, which can firmly fix the hand rocker when it is not in use to prevent the bidirectional lead screw 7 from rotating back. The same U-shaped frame 12 is fixed to the same-side of the first side frame plate 1 and the second side frame plate 2. Linkage shafts 13 are rotatably installed on the inner walls of both sides of the U-shaped frame 12. A winding roller 14 is fixedly connected to the mutually close ends of the two linkage shafts 13 by bolts. A reduction motor is fixed to the outer wall of one side of the U-shaped frame 12, and its output shaft is fixedly connected to one end of one of the linkage shafts 13. By starting the reduction motor, the winding roller 14 can be driven to perform the winding work. In order to prevent the hard film from running off during the winding process and folding along the edge, a positioning mechanism is provided on both of the two bearing shafts 10 to play a role in preventing the hard film from running off and folding.
[0025] In the two clamping mechanisms set as above, each clamping mechanism includes two folding rods 15. The two folding rods 15 are both fixed on the bearing shaft 10. On the side where the two folding rods 15 are close to each other, limiting pieces 16 are fixed. The bottoms of the two limiting pieces 16 are in contact with the outer wall of the roller 11, and there is no interference between them. The limiting piece 16 can limit the hard film from the side, thus achieving the effect of preventing deviation. And a same cross bar 17 is fixed on the tops of the two limiting pieces 16. An adjusting screw rod 18 is rotatably installed on the cross bar 17. A connecting plate 19 is threadedly installed on the adjusting screw rod 18. Two guiding columns 20 are slidably installed on the cross bar 17. The ends of the two guiding columns 20 far from the roller 11 are fixedly connected to the connecting plate 19. The ends of the two guiding columns 20 close to the roller 11 are both fixed with pressing pieces 21. The sides of the two pressing pieces 21 away from each other are respectively in contact with the two limiting pieces 16. The pressing piece 21 can limit the edge of the hard film, so that there is no space for the edge of the hard film to turn up, further improving the anti-wrinkle effect.
[0026] In this way, in order to make the connecting strip 8 slide linearly and stably, two rectangular sliding openings are opened on the first mounting panel 4. The two connecting strips 8 respectively penetrate through the two rectangular sliding openings and are in contact with the inner walls of the corresponding rectangular sliding openings. And two open slideways are opened on the second mounting panel 5. The two bearing shafts 10 respectively penetrate through the two open slideways and are in contact with the inner walls of the corresponding open slideways, so that the bearing shaft 10 can move along with the movement of the connecting strip 8.
[0027] The working principle of the winding anti-wrinkle mechanism of the intaglio printing machine provided by the present utility model is as follows:
[0028] In the initial state, the output shaft of the electric push rod is in the extended state;
[0029] When it is necessary to wind the hard film, first pass the hard film through the middle of the two guiding rollers 3 to make it have a horizontal winding condition, then pass it over the roller 11 located above, and then pass it under the roller 11 located below, and finally fix it on the winding roller 14. And at this time, both sides of the hard film are respectively in contact with and abutted against the two limiting pieces 16. Subsequently, rotate the two adjusting screw rods 18 to make the two pressing pieces 21 descend, and finally make the pressing pieces 21 buckle the hard film, but not fit tightly with the hard film, only playing a limiting role;
[0030] Then the reduction motor can be started, and its output shaft drives the corresponding linkage shaft 13 to rotate, and then starts to wind the hard film;
[0031] In the later use, when the hard film becomes loose and causes wrinkles during the winding process, the output shaft of the electric push rod can be retracted first to separate the arc-shaped anti-slip piece from the hand rocker. Then, rotate the hand rocker. Through the threaded fit between the bidirectional lead screw 7 and the connecting bar 8, the two connecting bars 8 move away from each other, and then can drive the bearing shaft 10 to move together. At this time, the two rollers 11 move away from each other, so that the hard film can be pulled from two directions, making the loose hard film gradually tightened. After the hard film is completely tightened, extend the output shaft of the electric push rod, fix the hand rocker again, and then the winding work of the hard film can be continued.
[0032] Compared with the related technology, the winding anti-wrinkle mechanism of the intaglio printing press provided by the present invention has the following beneficial effects:
[0033] The present invention provides a winding anti-wrinkle mechanism for an intaglio printing press. By arranging two bearing shafts 10 that can move away from or close to each other, the loose hard film can be adjusted to a tightened state, thus preventing the occurrence of wrinkles during the winding process. Moreover, through the arranged limiting piece 16, the edge of the hard film can be limited, thereby preventing the hard film from running off track, and the pressing piece 21 can prevent the edge of the hard film from turning up, further reducing the occurrence of wrinkles. Thus, the winding quality is greatly improved.
[0034] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be included in the patent protection scope of the present invention by the same token.
Claims
1. A reeling and wrinkle-proof mechanism for a gravure printing machine, comprising a first side frame plate and a second side frame plate, characterized in that: Two guiding rollers are rotatably installed on one side of the first side frame plate and the second side frame plate which are close to each other. The two guiding rollers are staggeredly distributed. A first mounting panel and a second mounting panel are arranged between the first side frame plate and the second side frame plate. The first mounting panel is fixedly connected to the first side frame plate, and the second mounting panel is fixedly connected to the second side frame plate. Two bearing shafts are arranged between the first mounting panel and the second mounting panel. The two bearing shafts are staggeredly distributed. Both of the two bearing shafts penetrate through the second mounting panel and are slidably connected to the second mounting panel. Coiling rollers are rotatably sleeved on both of the two bearing shafts. A U-shaped frame is fixedly installed on one side of the first mounting panel away from the second mounting panel. A bidirectional lead screw is rotatably installed in the U-shaped frame. Two connecting strips are threadedly installed on the bidirectional lead screw. Both of the two connecting strips penetrate through the first mounting panel and are slidably connected to the first mounting panel. Cross connecting arms are fixedly installed on one side of both of the two connecting strips away from the first side frame plate. One ends of the two bearing shafts are respectively fixedly connected to the two cross connecting arms. The same U-shaped frame is fixedly installed on the same-side of the first side frame plate and the second side frame plate. Linkage shafts are rotatably installed on both inner walls of the U-shaped frame. A winding roller is fixedly installed at one ends of the two linkage shafts close to each other by bolts. A reduction motor is fixedly installed on one outer wall of the U-shaped frame. The output shaft of the reduction motor is fixedly connected to one end of one of the linkage shafts.
2. The anti-wrinkle mechanism for winding of a gravure printing press according to claim 1, characterized in that: A hand rocker is fixedly installed at the top end of the bidirectional lead screw. An electric push rod is fixedly installed at the top of the first side frame plate. An arc-shaped anti-slip piece is fixedly installed on the output shaft of the electric push rod. The inner wall of the arc-shaped anti-slip piece abuts against the hand rocker.
3. The anti-wrinkle mechanism for winding of a gravure printing press according to claim 1, characterized in that: Card positioning mechanisms are arranged on both of the two bearing shafts to prevent the hard film from running off track.
4. The anti-wrinkle mechanism for winding of a gravure printing press according to claim 3, characterized in that: The card positioning mechanism includes two folding rods. Both of the two folding rods are fixedly installed on the bearing shaft. Limit pieces are fixedly installed on one side of the two folding rods close to each other. The bottoms of the two limit pieces are respectively in contact with the outer wall of the coiling roller. A cross bar is fixedly installed at the tops of the two limit pieces. An adjusting screw rod is rotatably installed on the cross bar. A connecting plate is threadedly installed on the adjusting screw rod. Two guiding columns are slidably installed on the cross bar. One ends of the two guiding columns away from the coiling roller are respectively fixedly connected to the connecting plate. Pressure pieces are fixedly installed at one ends of the two guiding columns close to the coiling roller. One sides of the two pressure pieces away from each other are respectively in contact with the two limit pieces.
5. The anti-wrinkle mechanism for winding of a gravure printing press according to claim 1, characterized in that: Two rectangular sliding openings are formed in the first mounting panel. Both of the two connecting strips penetrate through the two rectangular sliding openings respectively and are in contact with the inner walls of the corresponding rectangular sliding openings.
6. The anti-wrinkle mechanism for winding of a gravure printing press according to claim 1, characterized in that: Two open sliding ways are formed in the second mounting panel. Both of the two bearing shafts penetrate through the two open sliding ways respectively and are in contact with the inner walls of the corresponding open sliding ways.
7. The anti-wrinkle mechanism for winding of a gravure printing press according to claim 1, characterized in that: Two stabilizing plates are fixedly installed on one side of the first mounting panel away from the second mounting panel. One side of each of the two stabilizing plates is fixedly connected to the inner wall of one side of the C-shaped frame, and the bidirectional lead screw passes through the two stabilizing plates and is movably connected to the two stabilizing plates.