A PVC decorative film printing equipment

Abstract

The invention relates to the field of printing equipment, and discloses a PVC decorative film printing equipment. In this scheme, a pattern is split into multiple parts, which are respectively arranged on different mold cylinders. In this way, after a rolling shaft embosses the texture on the surface of the corresponding mold cylinder onto a film, a mounting plate drives the rolling shaft to rotate as a whole, and switches to the next rolling shaft. After the rolling shaft rotates and embosses the texture on the surface of the corresponding mold cylinder onto the film, the two embossed textures are seamlessly connected. In this way, the rolling shafts are continuously switched for embossing until all the rolling shafts complete one embossing, so that the textures split on the surfaces of different mold cylinders form a large-scale complete pattern on the film. In this way, the embossing work of a large-scale pattern can be completed with simple equipment, and the equipment has a simple structure and less precision accessories, so that the use cost and later maintenance cost of the equipment are greatly reduced. At the same time, the mold cylinder can be freely replaced, so that the application range of the equipment is wider.

Description

Technical Field

[0001] The invention relates to the field of printing equipment, in particular to a PVC decorative film printing equipment. Background Art

[0002] PVC decorative film is a plastic film that is attached to the surface of furniture, floors, cars and other items for decorative purposes. There are many types of PVC decorative film. According to its surface style, it can be divided into solid color and patterned. The solid color PVC decorative film can be directly pulled out through the film making equipment, while the patterned PVC decorative film needs to be embossed with patterns and designs through the printing equipment later.

[0003] There are two types of printing equipment used for patterned PVC decorative films. One is to roll a patterned roller on the surface of the decorative film to emboss the pattern. However, the pattern processed by this method is limited by the surface area of ​​the roller and can only be used to emboss small patterns. When large patterns need to be printed, another type of intelligent printing equipment will be used. Through the intelligent system, the large pattern is printed on the decorative film using the inkjet method;

[0004] Since the patterns of PVC decorative film have low requirements on color and the accuracy does not need to reach the micron level, the use of inkjet printing equipment will cause excess performance. Both the equipment use cost and the subsequent maintenance cost are far higher than the roller printing equipment. Therefore, we have launched a PVC decorative film printing equipment to solve the problem. Summary of the invention

[0005] 1. Technical issues to be solved

[0006] In view of the problems existing in the prior art, the purpose of the present invention is to provide a PVC decorative film printing equipment. This scheme splits a pattern into multiple parts and sets them on different mold cylinders respectively. In this way, after a rolling shaft prints the texture on the surface of the corresponding mold cylinder onto the film, the mounting plate drives the rolling shaft to rotate as a whole and switches to the next rolling shaft. After the rolling shaft rotates and prints the texture on the surface of the corresponding mold cylinder onto the film, the two printed textures are seamlessly connected. In this way, the rolling shafts are continuously switched for printing until all the rolling shafts have completed one printing, so that the textures split on the surfaces of different mold cylinders form a large-scale complete pattern on the film. In this way, the printing work of large-scale patterns can be completed with simple equipment, and the equipment has a simple structure and few precision accessories, so that the use cost and later maintenance cost of the equipment are greatly reduced. At the same time, the mold cylinder completed by the rolling shaft can be replaced by separating the right mounting plate, so that the application range of the equipment is wider and the printing cost is further reduced.

[0007] 2. Technical solution

[0008] To solve the above problems, the present invention adopts the following technical solutions.

[0009] A PVC decorative film printing device comprises a frame, wherein two mounting disks are arranged on the inner side of the frame, a rolling shaft is fixedly connected between the two mounting disks, an adjusting motor is fixedly connected between the mounting disks and the frame, a mold cylinder is arranged on the outer side of the rolling shaft, a film is laid on the inner bottom wall of the frame, and both ends of the film are connected to a conveying device, an assembly port is arranged on the side of the frame, a movable frame is movably arranged inside the assembly port, a separation telescopic rod is fixedly connected between the movable frame and the frame, one mounting disk is located on the frame, and the other mounting disk is rotatably mounted on the movable frame, a circular array distributed interface is arranged on the surface of the mounting disk, the interface passes through the left mounting disk and extends to the surface of the right mounting disk, the rolling shaft passes through the left interface and is rotatably connected thereto, the rolling shaft is inserted into the right interface, a rolling motor connected to the rolling shaft is fixedly connected to the surface of the left mounting disk, the rolling motor has a built-in positioning piece, the mold cylinder is sleeved on the outer side of the rolling shaft, the patterns on the outer side of the mold cylinder are spliced ​​into a complete pattern, and the outer sides of adjacent mold cylinders are The patterns are seamlessly spliced, and a docking mechanism corresponding to the rolling shaft and the mold cylinder is arranged on the inner bottom wall of the frame. A pattern is split into multiple parts and respectively arranged on different mold cylinders. In this way, after a rolling shaft embosses the pattern on the surface of the corresponding mold cylinder onto the film, the mounting plate drives the rolling shaft to rotate as a whole and switches to the next rolling shaft. After the rolling shaft rotates and embosses the pattern on the surface of the corresponding mold cylinder onto the film, the two embossed patterns are seamlessly docked. In this way, the rolling shafts are continuously switched for embossing until all the rolling shafts have completed one embossing, so that the patterns split on the surfaces of different mold cylinders form a large-scale complete pattern on the film. In this way, the embossing of large-scale patterns can be completed with simple equipment, and the equipment has a simple structure and few precision accessories, so that the use cost and later maintenance cost of the equipment are greatly reduced. At the same time, the mold cylinder completed by the rolling shaft can be replaced by separating the right mounting plate, so that the application range of the equipment is wider and the printing cost is further reduced.

[0010] Furthermore, the inner bottom walls of the seat frame and the movable frame are equipped with a support seat that is lifted under the mounting plate. The support seat is slidably connected to the mounting plate. In this way, the mounting plate is lifted and supported at the bottom by the support seat, so that the burden on the connection between the mounting plate and the seat frame and the movable frame is reduced, thereby improving the stability of the rolling shaft driven by the mounting plate and avoiding shaking that affects the printing effect.

[0011] Furthermore, a limiting ring is arranged on the outer side of one end of the rolling shaft, and a guiding arc surface is arranged on the other side. Thus, the guiding arc surface can facilitate the insertion of the mold cylinder into the rolling shaft, and the limiting ring can help position the mold cylinder when it is inserted.

[0012] Furthermore, the surface of the mold cylinder is divided into a printing area and a blank area, and the distribution angle of the printing area does not exceed 350 degrees. The blank area is recessed inwardly. Under the control of the positioning part and the rolling motor, the blank area is always located on the left side of the mold cylinder, and the intersection of the blank area and the printing area is located directly below the mold cylinder. In this way, when the rolling shaft and the mold cylinder are switched, the film contacts the later mold cylinder, and the lowest end of the mold cylinder coincides with the edge of the previous section of the pattern. At the same time, the right side of the mold cylinder (the direction of film arrival) also has slight contact with the film due to the thickness of ink adhesion and slight deformation of the film, leaving some ink marks, while the left side of the mold cylinder (the direction of film destination) has a recessed blank area, which prevents the area of ​​the film that has been printed with the pattern from being broken, and part of the ink stained on the film will also be covered in the subsequent printing process, thereby improving the printing effect of the equipment and improving product quality.

[0013] Furthermore, the docking mechanism includes a storage groove provided on the inner bottom wall of the seat frame, side plates are fixedly connected on both sides of the opening of the storage groove, an adjusting slide groove is provided on one side of the side plate close to the storage groove, a rotating shaft is slidably connected inside the adjusting slide groove, an external telescopic adjustment device and a rotating drive device of the rotating shaft are connected, and a top pressing spindle is fixedly connected between the rotating shafts, the top pressing spindle is located directly below the rolling shaft, the film is laid on the surface of the top pressing spindle, the part of the film that contacts the top pressing spindle protrudes upward, and the film and the mold cylinder are brought into contact by using the top pressing spindle, so that the middle of the film is convex, so that the highest point of the protrusion is received by the mold cylinder and receives printing, and both sides of the highest point of the film are inclined downward, thereby reducing the area of ​​rubbing (ink stained due to the thickness of ink adhesion and the slight shape of the film), and further improving the printing effect. At the same time, when switching the rolling shaft and the mold cylinder, the top pressing spindle drives the film to move downward to prevent the mold cylinder from scratching the film when leaving or entering the printing area.

[0014] Furthermore, there are three adjusting slots, and the three adjusting slots are divided into two groups, one group is opened vertically in the center, and the other group is opened at an angle, and is symmetrically distributed on both sides of the center adjusting slot. The top pressing main shaft is located in the center adjusting slot, and the rotating shafts in the adjusting slots on both sides are fixedly connected with a leveling sub-shaft. The top surface height of the leveling sub-shaft is lower than that of the top pressing main shaft. The film is laid on the surface of the top pressing main shaft and the leveling sub-shaft. By arranging the leveling sub-shaft on both sides of the top pressing main shaft, when the top pressing main shaft first separates the film and the mold cylinder, the leveling sub-shafts on both sides are tilted and pushed outward, so as to flatten the part of the film that loses the support of the top pressing main shaft, thereby reducing the deformation amplitude of this part of the film (the original deformation amplitude: from convex upward to collapsed downward), so as to avoid the ink just attached to the surface of the film from being stretched or overlapped due to the deformation of the film.

[0015] Furthermore, the diameter of the pressing main shaft is smaller than the diameter of the mold cylinder, and the diameter of the leveling secondary shaft is smaller than the diameter of the pressing main shaft. This reduces the contact area (direct contact or accidental contact) between the film and the pressing main shaft, further reducing the rubbing area and improving the printing effect.

[0016] Furthermore, a fixing mechanism is arranged inside the pressing main shaft and the leveling sub-shaft, so that when the pressing main shaft and the leveling sub-shaft are moving, the pressing main shaft and the leveling sub-shaft will adsorb the film on their own surface, thereby reducing the displacement deviation between the pressing main shaft and the film during movement, so that during the imprinting process, the docking accuracy of the patterns on each mold cylinder is higher, thereby further improving the product quality.

[0017] Furthermore, the fixing mechanism includes an internal movable warehouse opened in the top-pressing main shaft and the leveling secondary shaft, the inner wall of the movable warehouse is opened with a mesh groove extending to the surface of the top-pressing main shaft and the leveling secondary shaft, the adjustment slide groove array is distributed, a counterweight is movably installed inside the movable warehouse, the upper end of the counterweight is small and the lower end is large, and both the upper and lower ends are in contact with the inner wall of the movable warehouse, an adjustment cavity is opened inside the counterweight, and an adjustment slider is slidably connected inside the adjustment cavity, and the adjustment slider divides the adjustment cavity into two left and right sections, a balancing air hole extending into the adjustment cavity is opened on the surface of the counterweight, a suction port corresponding to the mesh groove is opened on the top of the counterweight, a connecting air hole is opened between the suction port and the adjustment cavity, the connecting air hole is connected to the left section of the adjustment cavity, and the balancing air hole is connected to the right section of the adjustment cavity;

[0018] A damper is arranged between the counterweight and the movable chamber so that when the top pressure main shaft rotates at a constant speed, the regulating cavity tilts in the direction of rotation;

[0019] Lubricant is applied between the adjusting cavity and the adjusting slider. When the counterweight is deflected, the adjusting slider slides in the adjusting cavity, and the spatial position remains unchanged.

[0020] Furthermore, the adjustment cavity and the suction port are distributed in a linear array on the counterweight, and the suction port can wrap at least one mesh slot, so that the fixing mechanism is divided into multiple groups, each working independently. In this way, even if an accident occurs in part, it will not affect the function of the fixing mechanism, making its working process more stable.

[0021] 3. Beneficial effects

[0022] Compared with the prior art, the advantages of the present invention are:

[0023] 1. This solution splits a pattern into multiple parts and sets them on different mold cylinders respectively. In this way, after a rolling shaft embosses the texture on the surface of the corresponding mold cylinder onto the film, the mounting plate drives the rolling shaft to rotate as a whole and switches to the next rolling shaft. This rolling shaft rotates and embosses the texture on the surface of the corresponding mold cylinder onto the film. The two embossed textures are seamlessly connected. In this way, the rolling shafts are continuously switched for embossing until all the rolling shafts have completed one embossing, so that the textures split on the surfaces of different mold cylinders form a large-scale complete pattern on the film. In this way, the embossing of large-scale patterns can be completed with simple equipment, and the equipment has a simple structure and few precision accessories, which greatly reduces the use cost and later maintenance cost of the equipment. At the same time, the mold cylinder completed by the rolling shaft can be replaced by separating the right mounting plate, so that the application range of the equipment is wider and the cost of printing is further reduced.

[0024] 2. The inner bottom wall of the seat frame and the movable frame is equipped with a support seat that is lifted under the mounting plate. The support seat is slidably connected to the mounting plate. In this way, the mounting plate is lifted and supported at the bottom by the support seat, so that the burden on the connection between the mounting plate and the seat frame and the movable frame is reduced, thereby improving the stability of the rolling shaft driven by the mounting plate and avoiding shaking that affects the printing effect.

[0025] 3. The surface of the mold cylinder is divided into a printing area and a blank area, and the distribution angle of the printing area does not exceed 350 degrees. The blank area is concave inward. Under the control of the positioning parts and the rolling motor, the blank area is always located on the left side of the mold cylinder, and the intersection of the blank area and the printing area is located directly below the mold cylinder. In this way, when the rolling shaft and the mold cylinder are switched, the film contacts the later mold cylinder, and the lowest end of the mold cylinder coincides with the edge of the previous section of the pattern. At the same time, the right side of the mold cylinder (the direction of film arrival) also has slight contact with the film due to the thickness of ink adhesion and slight deformation of the film, leaving some ink marks, while the left side of the mold cylinder (the direction of film destination) has a concave blank area to prevent the area of ​​the film that has been printed with patterns from being broken, and part of the ink stained on the film will also be covered in the subsequent printing process, thereby improving the printing effect of the equipment and improving product quality.

[0026] 4. By using the top pressure spindle to make the film and the mold cylinder contact, the middle of the film is raised, so that the highest point of the raised point is received by the mold cylinder and receives the embossing, and both sides of the highest point of the film are tilted downward to reduce the area of ​​rubbing (the ink stained due to the thickness of the ink adhesion and the slight shape of the film), and further improve the printing effect. At the same time, when switching the rolling shaft and the mold cylinder, the top pressure spindle drives the film to move downward to prevent the mold cylinder from scratching the film when leaving or entering the embossing area.

[0027] 5. By setting a leveling sub-axis on both sides of the top-pressing main shaft, when the top-pressing main shaft first separates the film and the mold cylinder, the leveling sub-axis on both sides is tilted and pushed outward to flatten the part of the film that loses the support of the top-pressing main shaft, thereby reducing the deformation amplitude of this part of the film (the original deformation amplitude: from convex upward to collapsed downward), and avoiding the ink just attached to the surface of the film from being stretched or overlapped due to the deformation of the film.

[0028] 6. The diameter of the top-pressing main shaft is smaller than the diameter of the mold cylinder, and the diameter of the leveling secondary shaft is smaller than the diameter of the top-pressing main shaft. This reduces the contact area (direct contact or accidental contact) between the film and the top-pressing main shaft, further reducing the rubbing area and improving the printing effect.

[0029] 7. A fixing mechanism is arranged inside the top pressing main shaft and the leveling sub-shaft. When the top pressing main shaft and the leveling sub-shaft are moving, the top pressing main shaft and the leveling sub-shaft will adsorb the film on their own surface, reducing the displacement deviation between the top pressing main shaft and the film during the movement, so that the docking accuracy of the patterns on each mold cylinder is higher during the embossing process, further improving the product quality.

[0030] 8. The adjustment cavity and the suction port are distributed in a linear array on the counterweight. The suction port can wrap at least one mesh slot, so that the fixing mechanism is divided into multiple groups, each working independently. In this way, even if an accident occurs in part, it will not affect the function of the fixing mechanism, making its working process more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is an overall display diagram of the present invention;

[0032] Figure 2 It is a diagram of the installation process of the mold cylinder of the present invention;

[0033] Figure 3 It is a disassembly diagram of the present invention;

[0034] Figure 4 It is a cross-sectional view of the mold cylinder of the present invention;

[0035] Figure 5 A top view of the storage tank of the present invention;

[0036] Figure 6 This is a split diagram of the top pressing main shaft and the leveling secondary shaft of the present invention;

[0037] Figure 7 This is a diagram of the pressing state of the pressing spindle of the present invention;

[0038] Figure 8 This is a diagram of the pressing state of the top pressing main shaft of the present invention;

[0039] Fig. 9 It is a diagram showing the arrangement state of the network slots of the present invention;

[0040] Fig.10 It is the internal state diagram of the activity bin of the present invention;

[0041] Fig.11 It is the internal state diagram of the counterweight of the present invention;

[0042] Fig.12 It is a state diagram of the fixing mechanism during adjustment of the present invention;

[0043] Fig.13 This is a state diagram of the fixing mechanism during rotation of the present invention.

[0044] Description of the numbers in the figure:

[0045] 1. Seat frame; 11. Assembly port; 12. Movable frame; 13. Separation telescopic rod; 14. Mounting plate; 15. Adjustment motor; 16. Rolling shaft; 17. Rolling motor; 18. Mold cylinder; 19. Support seat; 110. Limiting ring; 111. Interface; 2. Docking mechanism; 21. Storage slot; 22. Side panel; 23. Adjustment slide; 24. Pressing main shaft; 25. Leveling secondary shaft; 26. Rotating shaft; 3. Fixing mechanism; 31. Movable bin; 32. Net slot; 33. Counterweight; 34. Adjustment chamber; 35. Adjustment slider; 36. Balance air hole; 37. Adsorption port; 38. Connecting air hole. DETAILED DESCRIPTION

[0046] This embodiment will be combined with the disclosed drawings to clearly and completely describe the technical solution, so that the purpose, technical solution and beneficial effects of the embodiment of the present disclosure are clearer. Obviously, the described embodiment is a part of the embodiment of the present disclosure, not all of the embodiments. Based on the described embodiment of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0047] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure should be the conventional meanings understood by the technical personnel to whom the present disclosure belongs. The "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. "Including" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Up", "down", "inside", "outside" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0048] Example:

[0049] See also Figures 1 to 4A PVC decorative film printing device includes a frame 1, two mounting plates 14 are mounted on the inner side of the frame 1, a rolling shaft 16 is fixedly connected between the two mounting plates 14, an adjusting motor 15 is fixedly connected between the mounting plates 14 and the frame 1, a mold cylinder 18 is mounted on the outer side of the rolling shaft 16, a film is laid on the inner bottom wall of the frame 1, and both ends of the film are connected to a conveying device, an assembly port 11 is opened on the side of the frame 1, a movable frame 12 is movably installed inside the assembly port 11, a separation telescopic rod 13 is fixedly connected between the movable frame 12 and the frame 1, one mounting plate 14 is located on the frame 1, and the other is rotatably mounted on the movable frame 12, and a surface of the mounting plate 14 is provided with interfaces 111 distributed in a circumferential array, and the interfaces 111 extend through the left mounting plate 14 and extend to the right The rolling shaft 16 passes through the left interface 111 on the surface of the mounting disk 14 and is rotatably connected thereto. The rolling shaft 16 is inserted into the right interface 111. The surface of the left mounting disk 14 is fixedly connected with a rolling motor 17 connected to the rolling shaft 16. The rolling motor 17 has a built-in positioning piece. The mold barrel 18 is sleeved on the outside of the rolling shaft 16. The patterns on the outside of the mold barrel 18 are spliced ​​into a complete pattern. The patterns on the outside of adjacent mold barrels 18 are seamlessly spliced. The inner bottom wall of the seat frame 1 is provided with a docking mechanism 2 corresponding to the rolling shaft 16 and the mold barrel 18. When in use, the movable frame 12 is pushed out of the assembly port 11 by separating the telescopic rod 13. The movable frame 12 drives the right mounting disk 14 to separate from the rolling shaft 16, and then the mold barrel 18 is installed on the rolling shaft 16 in the order of pattern arrangement, such as Figure 2 As shown, after installation, the telescopic rod 13 is separated to pull the movable frame 12 to reset, and the right mounting plate 14 is docked with the rolling shaft 16 again. The adjusting motor 15 is started first to drive the mounting plate 14 to rotate, so that one of the rolling shafts 16 moves to the bottom, and the mold cylinder 18 on its outside contacts the film, and then the conveying equipment is started, and the film moves slowly in the seat frame 1. At this time, the lowest rolling motor 17 drives the lowest rolling shaft 16 to rotate, and the corresponding mold cylinder 18 also rotates to emboss the pattern on its surface on the surface of the film. After completing this part of the embossing process, the rolling shaft 16 and the film stop moving at the same time, and the adjusting motor 15 is started again to switch to the next rolling shaft 16. This rolling shaft 16 rotates, and after the texture on the surface of the corresponding mold cylinder 18 is embossed on the film, the two embossed textures are seamlessly docked, and the rolling shaft 16 is continuously switched for embossing until all rolling shafts 16 complete one embossing, so that the textures split on the surfaces of different mold cylinders 18 form a large-scale complete pattern on the film.

[0050] The inner bottom wall of the seat frame 1 and the movable frame 12 is installed with a support seat 19 that is lifted under the mounting plate 14. The support seat 19 is slidably connected to the mounting plate 14, so that the mounting plate 14 is lifted and supported at the bottom by the support seat 19, so that the burden on the connection between the mounting plate 14 and the seat frame 1 and the movable frame 12 is reduced, thereby improving the stability of the mounting plate 14 driving the rolling shaft 16 to avoid shaking that affects the printing effect; a limiting ring 110 is set on the outer side of one end of the rolling shaft 16, and a guide arc surface is set on the other side. In this way, improving the guide arc surface can facilitate the mold cylinder 18 to be inserted into the rolling shaft 16, and the limiting ring 110 can help position when the mold cylinder 18 is inserted.

[0051] The surface of the mold cylinder 18 is divided into a printed area and a blank area, and the distribution angle of the printed area does not exceed 350 degrees, and the blank area is concave inwardly, such as Figure 4 As shown, the blank area is always located on the left side of the mold cylinder 18 under the control of the positioning part and the rolling motor 17, and the intersection of the blank area and the printing area is located directly below the mold cylinder 18, so that when the rolling shaft 16 and the mold cylinder 18 are switched, the film contacts the subsequent mold cylinder 18, and the lowest end of the mold cylinder 18 coincides with the edge of the previous section of the pattern. At the same time, the right side of the mold cylinder 18 (the direction of film arrival) also has slight contact with the film due to the thickness of ink adhesion and slight deformation of the film, leaving some ink marks, while the left side of the mold cylinder 18 (the direction of film destination) has a recessed blank area, which prevents the area of ​​the film that has been printed with the pattern from being broken, and part of the ink stained on the film will also be covered in the subsequent printing process, thereby improving the printing effect of the equipment and improving product quality.

[0052] See also Figures 3 to 8 The docking mechanism 2 includes a receiving groove 21 provided on the inner bottom wall of the seat frame 1, and side plates 22 are fixedly connected to both sides of the opening of the receiving groove 21. An adjusting slide groove 23 is provided on one side of the side plate 22 close to the receiving groove 21. A rotating shaft 26 is slidably connected inside the adjusting slide groove 23, and an external telescopic adjustment device and a rotating drive device are connected to the rotating shaft 26. A pressing spindle 24 is fixedly connected between the rotating shafts 26. The pressing spindle 24 is located directly below the rolling shaft 16. The film is laid on the surface of the pressing spindle 24, and the part of the film that contacts the pressing spindle 24 bulges upward. By using the pressing spindle 24, the film is brought into contact with the mold cylinder 18, so that the middle of the film bulges, such as Figure 7 and Figure 8As shown, the highest point of the protrusion is received by the mold cylinder 18 to receive the embossing, and both sides of the highest point of the film are inclined downward, reducing the area of ​​rubbing (the ink stained by the thickness of the ink and the slight shape of the film), further improving the printing effect, and at the same time, when the rolling shaft 16 and the mold cylinder 18 are switched, the top pressure main shaft 24 drives the film to move downward to prevent the mold cylinder 18 from scratching the film when leaving or entering the embossing area; there are three adjusting slide grooves 23, and the three adjusting slide grooves 23 are divided into two groups, one of which is vertically opened in the middle, and the other is inclined and opened, symmetrically. The film is laid on the surfaces of the pressing main shaft 24 and the flattening sub-shaft 25. By arranging the flattening sub-shaft 25 on both sides of the pressing main shaft 24, when the pressing main shaft 24 separates the film from the mold cylinder 18, the flattening sub-shafts 25 on both sides are tilted and pushed outwards, so as to flatten the part of the film that loses the support of the pressing main shaft 24. Figure 8 As shown, the deformation amplitude of this part of the film is reduced (the original deformation amplitude: from convex upward to collapsed downward), so as to avoid the ink just attached to the surface of the film from being stretched or overlapped due to the deformation of the film.

[0053] The diameter of the pressing main shaft 24 is smaller than the diameter of the mold cylinder 18, and the diameter of the leveling secondary shaft 25 is smaller than the diameter of the pressing main shaft 24. This reduces the contact area (direct contact or accidental contact) between the film pressed by the mold cylinder 18 and the pressing main shaft 24, further reducing the rubbing area and improving the printing effect.

[0054] See also Figures 9 to 13A fixing mechanism 3 is arranged inside the pressing main shaft 24 and the leveling secondary shaft 25. The fixing mechanism 3 includes an internal movable warehouse 31 opened in the pressing main shaft 24 and the leveling secondary shaft 25. The inner wall of the movable warehouse 31 is provided with a mesh groove 32 extending to the surface of the pressing main shaft 24 and the leveling secondary shaft 25. The adjusting slide grooves 23 are arranged in an array. A counterweight 33 is movably installed inside the movable warehouse 31. The upper end of the counterweight 33 is small and the lower end is large, and both the upper and lower ends are in contact with the inner wall of the movable warehouse 31. An adjusting cavity 34 is opened inside the counterweight 33. An adjusting slider 35 is slidably connected inside the adjusting cavity 34. The adjusting slider 35 divides the adjusting cavity 34 into two left and right sections. The surface of the counterweight 33 is provided with a There is a balancing air hole 36 extending into the adjustment chamber 34, a suction port 37 corresponding to the mesh slot 32 is provided at the top of the counterweight 33, a connecting air hole 38 is provided between the suction port 37 and the adjustment chamber 34, the connecting air hole 38 is connected to the left section of the adjustment chamber 34, and the balancing air hole 36 is connected to the right section of the adjustment chamber 34; a damping is arranged between the counterweight 33 and the movable bin 31, so that when the top-pressing main shaft 24 rotates at a uniform speed, the adjustment chamber 34 tilts in the direction of rotation; a lubricant is applied between the adjustment chamber 34 and the adjusting slider 35, and when the counterweight 33 deflects, the adjusting slider 35 slides in the adjustment chamber 34, and the spatial position remains unchanged; when the top-pressing main shaft 24 and the leveling secondary shaft 25 rotate, as shown in FIG. Fig.13 As shown, under the influence of friction, the counterweight 33 tilts in the direction of rotation, and the adjusting slider 35 is subjected to a small friction force and does not move with the counterweight 33, so the adjusting slider 35 slides in the adjusting chamber 34, so that the space on one side of the adjusting chamber 34 becomes larger (air is sucked in from the balancing air hole 36 for replenishment), and the space on the other side becomes smaller (air is discharged from the connecting air hole 38). During this process, the pressing main shaft 24 and the leveling secondary shaft 25 have no effect on the film. In the process of adjusting the film by the pressing main shaft 24 and the leveling secondary shaft 25, the pressing main shaft 24 and the leveling secondary shaft 25 will stop rotating first, as shown in FIG. Fig.12 As shown, the friction force is continuously applied, the counterweight 33 slides back to its original position, and the adjusting slider 35 also returns to its original position in the adjusting chamber 34. During this resetting process, the space on one side of the adjusting chamber 34 becomes larger (air is sucked in from the connecting air hole 38 for replenishment), and the space on the other side becomes smaller (air is discharged from the balancing air hole 36). The air sucked in by the connecting air hole 38 forms a negative pressure in the adsorption port 37, and the film is adsorbed on the surface of the top-pressing main shaft 24 or the flattening secondary shaft 25 through the mesh groove 32.

[0055] The adjustment cavity 34 and the suction port 37 are distributed in a linear array on the counterweight 33, and the suction port 37 can at least cover one mesh slot 32, so that the fixing mechanism 3 is divided into multiple groups, each working independently. In this way, even if an accident occurs in part, it will not affect the function of the fixing mechanism 3, making its working process more stable.

[0056] The above is only a preferred specific implementation of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and its improved conception within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A PVC decorative film printing device, comprising a frame (1), two mounting plates (14) are mounted on the inner side of the frame (1), a rolling shaft (16) is fixedly connected between the two mounting plates (14), an adjusting motor (15) is fixedly connected between the mounting plates (14) and the frame (1), a mold cylinder (18) is mounted on the outer side of the rolling shaft (16), a film is laid on the inner bottom wall of the frame (1), and both ends of the film are connected to a conveying device, characterized in that: The side of the seat frame (1) is provided with an assembly opening (11), a movable frame (12) is movably installed inside the assembly opening (11), a separation telescopic rod (13) is fixedly connected between the movable frame (12) and the seat frame (1), one of the mounting plates (14) is located on the seat frame (1), and the other is rotatably mounted on the movable frame (12), the surface of the mounting plate (14) is provided with interfaces (111) distributed in a circumferential array, the interfaces (111) penetrate the left side mounting plate (14) and extend to the surface of the right side mounting plate (14), and the rolling shaft (16) penetrates the left interface (111), and is rotatably connected thereto, the rolling shaft (16) is inserted into the right interface (111), the surface of the left mounting plate (14) is fixedly connected with a rolling motor (17) connected to the rolling shaft (16), the rolling motor (17) has a built-in positioning piece, the mold cylinder (18) is sleeved on the outside of the rolling shaft (16), the patterns on the outside of the mold cylinder (18) are spliced ​​into a complete pattern, the patterns on the outside of adjacent mold cylinders (18) are seamlessly spliced, and the inner bottom wall of the seat frame (1) is provided with a docking mechanism (2) corresponding to the rolling shaft (16) and the mold cylinder (18); The surface of the mold cylinder (18) is divided into a printed area and a blank area, and the distribution angle of the printed area does not exceed 350 degrees. The blank area is concave inwardly. Under the control of the positioning member and the rolling motor (17), the blank area is always located on the left side of the mold cylinder (18), and the intersection point of the blank area and the printed area is located directly below the mold cylinder (18).

2. A PVC decorative film printing device according to claim 1, characterized in that: The inner bottom walls of the seat frame (1) and the movable frame (12) are provided with a support seat (19) supported below the mounting plate (14), and the support seat (19) is slidably connected to the mounting plate (14).

3. The PVC decorative film printing equipment according to claim 1, characterized in that: A limiting ring (110) is arranged on the outer side of one end of the rolling shaft (16), and a guiding arc surface is arranged on the other side.

4. The PVC decorative film printing equipment according to claim 1, characterized in that: The docking mechanism (2) comprises a receiving groove (21) provided on the inner bottom wall of the seat frame (1), side plates (22) are fixedly connected to the two sides of the opening of the receiving groove (21), an adjusting slide groove (23) is provided on the side of the side plate (22) close to the receiving groove (21), a rotating shaft (26) is slidably connected inside the adjusting slide groove (23), an external telescopic adjustment device and a rotating drive device are connected to the rotating shaft (26), a top pressing spindle (24) is fixedly connected between the rotating shafts (26), the top pressing spindle (24) is located directly below the rolling shaft (16), a film is laid on the surface of the top pressing spindle (24), and the portion of the film in contact with the top pressing spindle (24) is convex upward.

5. A PVC decorative film printing device according to claim 4, characterized in that: There are three adjusting slots (23), and the three adjusting slots (23) are divided into two groups, one of which is vertically opened in the center, and the other is inclined and symmetrically distributed on both sides. The top-pressing main shaft (24) is located in the central adjusting slot (23), and the rotating shafts (26) in the adjusting slots (23) on both sides are respectively fixedly connected with a flattening secondary shaft (25), the top surface height of the flattening secondary shaft (25) is lower than that of the top-pressing main shaft (24), and the film is laid on the surface of the top-pressing main shaft (24) and the flattening secondary shaft (25).

6. The PVC decorative film printing equipment according to claim 5, characterized in that: The diameter of the pressing main shaft (24) is smaller than the diameter of the mold cylinder (18), and the diameter of the flattening secondary shaft (25) is smaller than the diameter of the pressing main shaft (24).

7. The PVC decorative film printing equipment according to claim 5, characterized in that: A fixing mechanism (3) is provided inside the pressing main shaft (24) and the leveling secondary shaft (25).

8. The PVC decorative film printing equipment according to claim 7, characterized in that: The fixing mechanism (3) comprises an internal movable bin (31) provided on the top-pressing main shaft (24) and the leveling secondary shaft (25); the inner wall of the movable bin (31) is provided with a mesh groove (32) extending to the surface of the top-pressing main shaft (24) and the leveling secondary shaft (25); the adjusting slide grooves (23) are arranged in an array; a counterweight (33) is movably installed inside the movable bin (31); the counterweight (33) has a small upper end and a large lower end, and both upper and lower ends are in contact with the inner wall of the movable bin (31); an adjusting cavity (34) is provided inside the counterweight (33); the adjusting cavity (34) is An adjusting slider (35) is slidably connected inside, the adjusting slider (35) divides the adjusting chamber (34) into two left and right sections, a balancing air hole (36) extending into the adjusting chamber (34) is provided on the surface of the counterweight (33), a suction port (37) corresponding to the mesh slot (32) is provided on the top of the counterweight (33), a connecting air hole (38) is provided between the suction port (37) and the adjusting chamber (34), the connecting air hole (38) is connected to the left section of the adjusting chamber (34), and the balancing air hole (36) is connected to the right section of the adjusting chamber (34); A damping is provided between the counterweight (33) and the movable chamber (31), so that when the top pressure main shaft (24) rotates at a constant speed, the regulating chamber (34) tilts in the direction of rotation; Lubricant is applied between the adjustment cavity (34) and the adjustment slider (35), and when the counterweight (33) is deflected, the adjustment slider (35) slides in the adjustment cavity (34), and the spatial position remains unchanged.

9. The PVC decorative film printing equipment according to claim 8, characterized in that: The adjustment chamber (34) and the adsorption opening (37) are distributed in a linear array on the counterweight (33), and the adsorption opening (37) is capable of covering at least one net slot (32).

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