Front and back selective printing equipment

Abstract

The utility model relates to the technical field of printing machines, in particular to front and back selective printing equipment, which comprises a rack, a front and back printing machine, a drying device, a front guide roller, a middle guide roller and a rear guide roller, and the drying device comprises a moving seat, a winding roller, a rotating driver, a UV (ultraviolet) photocurer, a compression roller, an adjusting driver, a plurality of press-fit feeding rollers and a plurality of press-fit discharging rollers. The moving seat is provided with a step, the side wall of the step is rotationally connected with a rotating piece, a guide sleeve is arranged on the top wall of the step, a guide rail and a guide column are arranged on the top face of the machine frame, and the moving seat is locked on the machine frame through a locking piece. The position of the drying device is convenient and fast to adjust, a user can selectively print and dry the front face or the back face of the rubber face belt of the composite printed matter according to the actual printing technology requirement by adjusting the position of the drying device and using the drying device in cooperation with a front face and back face printing machine, and after the back face of the rubber face belt of the composite printed matter is printed, the printing efficiency is improved. And pressing the printed rubber surface belt and the main material through a pressing roller to form a printed composite printed product.

Description

TECHNICAL FIELD

[0001] The utility model relates to printing machine technical field especially is a kind of positive and reverse selective printing equipment. BACKGROUND

[0002] In the prior art, the Chinese patent document with application number 202210878637.5 discloses a printing machine for printing on both sides, which includes a machine base, an ink supply mechanism, a bottom roller, an anilox roller, a plate roller, first, second and third gears, a positive transition gear, a reverse transition gear, a positive fourth gear, a reverse fourth gear, positive and reverse first one-way bearings, a first motor, a positive rotating shaft, a reverse rotating shaft, two positive quick-release shaft seats and two reverse quick-release shaft seats. The patent document achieves the switching between printing on the front side and the back side by adjusting the installation positions of the plate roller, the anilox roller and the ink supply mechanism, thereby realizing the dual-purpose printing on both sides. However, the patent document can only print on the front side or the back side of materials such as cloth, paper and packaging film. When the material is a composite film or a composite printed product, it is not possible to print on the front side or the back side of the adhesive tape of the composite film or the composite printed product. Therefore, the defect is obvious, and a solution is urgently needed. SUMMARY

[0003] To solve the above technical problems, the purpose of the utility model is to provide a positive and reverse selective printing equipment.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0005] A positive and reverse selective printing equipment includes a rack, a front and back printing machine installed on the rack, a drying device slidingly connected to the top of the rack and located above the front and back printing machine, and front, middle and rear guide rollers rotatably connected to the rack. The middle guide roller is located below the front and back printing machine, and the front and rear guide rollers are located on the front and back sides of the front and back printing machine. The drying device includes a moving seat, a winding roller rotatably connected to the moving seat, a rotating driver installed on the moving seat and used to drive the winding roller to rotate, a UV light curing device arranged on the moving seat and covering the upper side of the winding roller, a pressure roller movably arranged on one side of the winding roller, an adjusting driver arranged on the moving seat and used to drive the pressure roller to move closer to or away from the winding roller, a plurality of pressing feed rollers rotatably connected to the moving seat, and a plurality of pressing discharge rollers rotatably connected to the moving seat. The plurality of pressing discharge rollers are distributed on the outer side of the plurality of pressing feed rollers. One end of the moving seat close to the rack is provided with a step, the side wall of the step is rotatably connected with a rotating part, the top wall of the step is provided with a guide sleeve, the top surface of the rack is horizontally provided with a guide rail in rolling contact with the rotating part and a guide column in sliding connection with the guide sleeve, and the moving seat is locked on the rack through a locking part.

[0006] Further, the moving seat is provided with a mounting groove, and the UV light curing device is installed in the mounting groove.

[0007] Further, the output guide roller is rotatably connected to the frame, and is located at a side of the rear guide roller away from the front and back printing machine.

[0008] Further, the frame is provided with a color mark sensor, and the color mark sensor is located above the front guide roller.

[0009] Further, the guide sleeve is embedded with a lubricating ring, and the lubricating ring is slidably sleeved on the guide post.

[0010] Further, the rotating member is a bearing or a rotating wheel.

[0011] The beneficial effects of this invention are as follows: In practical applications, when the drying device is located on the left side of the front and back printing machine, i.e., above the front guide roller, the front and back printing machine is in the reverse printing state. The composite printed material passes around the front guide roller and the middle guide roller, and the adhesive tape of the composite printed material passes upward through the reverse printing area of ​​the front and back printing machine. The front and back printing machine prints on the reverse side (inner side of the adhesive tape) of the composite printed material. After printing, the adhesive tape of the composite printed material passes around the winding roller and through the winding roller to the UV curing unit. The gap between the rollers is controlled by a rotary driver, which drives the rollers to rotate. The UV curing unit cures the adhesive tape of the printed composite material with UV light. The main material tape of the composite material passes through the rear guide roller and multiple pressing feed rollers and overlaps with the adhesive tape of the composite material. It then passes through the gap between the rollers and the pressure rollers. The driver is adjusted to drive the pressure roller to approach the rollers, so that the pressure roller presses the overlapped composite material onto the rollers. As the rollers rotate, the composite material moves. Finally, the printed composite material passes through multiple pressing output rollers and is output. When the drying device is located on the right side of the front and back printing press, i.e., above the rear guide roller away from the front and back printing press, the front and back printing press is in the front printing state. The composite printed material passes through the printing area of ​​the front and back printing press after passing around the front and middle guide rollers. The front and back printing press prints on the front side (outer side of the adhesive tape) of the composite printed material. After printing, the composite printed material passes around the winding roller and through the gap between the winding roller and the UV curing unit. The UV curing unit performs UV curing on the composite printed material, and finally, the printed composite printed material is output. When adjusting the position of the drying device, loosening the locking fasteners allows the moving seat to move horizontally relative to the frame. During the horizontal movement of the moving seat, the rotating parts roll against the guide rails. The guide rails support the rotating parts and the moving seat, and improve the stability of the drying device's translation. At the same time, the guide sleeve slides along the guide post, further improving the stability of the drying device's translation and making the movement of the drying device smoother. The position adjustment of the drying device of this utility model is convenient. By adjusting the position of the drying device and using it in conjunction with a front and back printing machine, the user can selectively print and dry the front or back of the adhesive tape of the composite printed product according to the actual printing process requirements. After the back of the adhesive tape of the composite printed product is printed, the printed adhesive tape is pressed with the main material by the pressure roller to form the printed composite printed product. Attached Figure Description

[0012] Fig. 1 This is a schematic diagram of the structure of the present invention in the reverse printing state of the tape surface.

[0013] Fig. 2 This is a schematic diagram of the structure of the present invention in the front printing state of the tape surface.

[0014] Fig. 3 This is a partial structural diagram of the drying device and frame of this utility model.

[0015] Explanation of reference numerals in the attached figures:

[0016] 1. Frame; 2. Front and back printing machine; 3. Drying device; 4. Front guide roller; 5. Middle guide roller; 6. Rear guide roller; 7. Moving seat; 8. Winding roller; 10. UV curing unit; 11. Pressure roller; 12. Adjustment driver; 13. Pressing feed roller; 14. Pressing discharge roller; 15. Step; 16. Rotating component; 17. Guide sleeve; 18. Guide rail; 19. Guide column; 20. Mounting groove; 21. Output guide roller; 22. Color mark sensor; 23. Lubricating ring; 24. Composite printed matter; 25. Adhesive tape; 26. Main material. Detailed Implementation

[0017] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the present invention.

[0018] like Figs. 1 to 3 As shown, this utility model provides a selective printing device for both sides, which includes a frame 1, a double-sided printing machine 2 mounted on the frame 1, a drying device 3 slidably connected to the top of the frame 1 and located above the double-sided printing machine 2, and a front guide roller 4, a middle guide roller 5, and a rear guide roller 6 respectively rotatably connected to the frame 1. The middle guide roller 5 is located below the double-sided printing machine 2, and the front guide roller 4 and the rear guide roller 6 are located on the front and rear sides of the double-sided printing machine 2. The drying device 3 includes a movable base 7, a winding roller 8 rotatably connected to the movable base 7, a rotation driver mounted on the movable base 7 for driving the winding roller 8 to rotate, a UV curing unit 10 disposed on the movable base 7 and covering the upper side of the winding roller 8, and a movable... A pressure roller 11 is disposed on one side of the winding roller 8; an adjusting drive 12 is disposed on the movable seat 7 and used to drive the pressure roller 11 closer to or away from the winding roller 8; multiple pressing feed rollers 13 are rotatably connected to the movable seat 7; and multiple pressing discharge rollers 14 are rotatably connected to the movable seat 7. The multiple pressing discharge rollers 14 are distributed on the outside of the multiple pressing feed rollers 13. A step 15 is provided at one end of the movable seat 7 near the frame 1. A rotating component 16 is rotatably connected to the side wall of the step 15. A guide sleeve 17 is installed on the top wall of the step 15. A guide rail 18 that rolls against the rotating component 16 and a guide post 19 that slides with the guide sleeve 17 are horizontally installed on the top surface of the frame 1. The movable seat 7 is locked to the frame 1 by fasteners. Specifically, the front and back printing machine 2 is an existing printing machine. The composite printed product 24 is formed by overlapping the adhesive tape 25 and the main material 26, which will not be described in detail here.

[0019] In actual application, when the drying device 3 is located on the left side of the front and back printing machine 2, that is, the drying device 3 is located above the front guide roller 4, the front and back printing machine 2 is in the state of printing the back side, the composite printed matter 24 passes through the front guide roller 4 and the middle guide roller 5, the adhesive surface strip 25 of the composite printed matter 24 passes through the printing back side area of the front and back printing machine 2 upwards, the front and back printing machine 2 prints the back side (the inner side of the adhesive surface strip 25) of the adhesive surface strip 25 of the composite printed matter 24, the printed adhesive surface strip 25 of the composite printed matter 24 passes through the gap between the winding roller 8 and the UV light curing device 10, the winding roller 8 is driven to rotate by the rotating driver, the UV light curing device 10 cures the printed adhesive surface strip 25 of the composite printed matter 24 by UV light, the main material strip 26 of the composite printed matter 24 passes through the rear guide roller 6 and the plurality of pressing feeding rollers 13, and then is combined with the adhesive surface strip 25 of the composite printed matter 24, and then passes through the gap between the winding roller 8 and the pressing roller 11, the pressing roller 11 is driven to move close to the winding roller 8 by the adjusting driver 12, so that the pressing roller 11 presses the combined composite printed matter 24 on the winding roller 8, with the rotation of the winding roller 8, the composite printed matter 24 moves, and finally the printed composite printed matter 24 passes through the plurality of pressing discharging rollers 14 and is output. When the drying device 3 is located on the right side of the front and back printing machine 2, that is, the drying device 3 is located above the side away from the front and back printing machine 2 of the rear guide roller 6, the front and back printing machine 2 is in the state of printing the front side, the composite printed matter 24 passes through the front guide roller 4 and the middle guide roller 5 and then passes through the printing front side area of the front and back printing machine 2, the front and back printing machine 2 prints the front side (the outer side of the adhesive surface strip 25) of the adhesive surface strip 25 of the composite printed matter 24, the printed composite printed matter 24 passes through the winding roller 8 and the gap between the winding roller 8 and the UV light curing device 10, the UV light curing device 10 cures the composite printed matter 24 by UV light, and finally the printed composite printed matter 24 is output. When the position of the drying device 3 is adjusted, the locking piece is loosened, and the moving seat 7 can move horizontally relative to the frame 1, in the process of horizontal movement of the moving seat 7, the rotating piece 16 rolls against the guide rail 18, the guide rail 18 supports the rotating piece 16 and the moving seat 7, and the stability of horizontal movement of the drying device 3 is improved, at the same time, the guide sleeve 17 slides along the guide column 19, the stability of horizontal movement of the drying device 3 is further improved, and the movement of the drying device 3 is smoother. The position of the drying device 3 of the utility model is convenient to adjust, through the position adjustment of the drying device 3 and the cooperation with the front and back printing machine 2, the user can selectively print and dry the front side or the back side of the adhesive surface strip 25 of the composite printed matter 24 according to the actual printing process requirement, and when the back side of the adhesive surface strip 25 of the composite printed matter 24 is printed, the printed adhesive surface strip 25 is pressed and combined with the main material 26 by the pressing roller 11 to form the printed composite printed matter 24.

[0020] Specifically, the locking piece can adopt a bolt or a brake, and the brake can automatically brake the moving seat 7.

[0021] In the embodiment, the mobile base 7 is provided with a mounting groove 20, and the UV light solidifier 10 is arranged in the mounting groove 20, so that the UV light solidifier 10 is convenient to disassemble and assemble, and the structure of the mobile base 7 and the UV light solidifier 10 is compact.

[0022] In the embodiment, the rack 1 is rotationally connected with an output guide roller 21, and the output guide roller 21 is located on the side of the rear guide roller 6 away from the front-rear surface printing machine 2; the output guide roller 21 guides the printed composite printed matter 24 to output.

[0023] In the embodiment, the rack 1 is provided with a color mark sensor 22, and the color mark sensor 22 is located above the front guide roller 4. The color mark sensor 22 is used for light tracking or color tracking of the composite printed matter 24, so as to ensure color matching, thereby improving the position precision and quality of the gold light oil spraying and pressing mechanism of the front end to the composite printed matter 24.

[0024] In the embodiment, the guide sleeve 17 is embedded with a lubricating ring 23, and the lubricating ring 23 is slidingly arranged on the guide column 19. In the process of reciprocating movement of the guide sleeve 17 along the guide column 19, the lubricating ring 23 plays a lubricating role, so that the movement of the mobile base 7 is smoother, and the abrasion is reduced.

[0025] In the embodiment, the rotating part 16 is a bearing or a rotating wheel.

[0026] In the embodiment, the adjusting driver 12 includes a cylinder arranged on the mobile base 7 and a sliding block arranged on the piston rod of the cylinder and slidingly connected with the mobile base 7, and the compression roller 11 is rotationally connected with the sliding block. In actual application, the piston rod of the cylinder is retracted and extended to drive the sliding block and the compression roller 11 to move close to or away from the winding roller 8, so as to adjust the distance between the compression roller 11 and the winding roller 8.

[0027] All the technical features in the embodiment can be freely combined according to actual needs.

[0028] The above embodiment is a preferred implementation scheme of the utility model, and the utility model can also be implemented in other ways without departing from the technical scheme concept. Any obvious replacement without departing from the technical scheme concept is within the protection scope of the utility model.

Claims

1. A recto-verso selective printing apparatus, characterized in that: The device comprises a rack (1), a front and back printing machine (2) installed on the rack (1), a drying device (3) slidingly connected to the top of the rack (1) and located above the front and back printing machine (2), a front guide roller (4), a middle guide roller (5) and a rear guide roller (6) rotatingly connected to the rack (1), the middle guide roller (5) is located below the front and back printing machine (2), the front guide roller (4) and the rear guide roller (6) are located on the front and back sides of the front and back printing machine (2), the drying device (3) comprises a moving base (7), a winding roller (8) rotatingly connected to the moving base (7), a rotating driver installed on the moving base (7) and used to drive the winding roller (8) to rotate, a UV light curing device (10) arranged on the moving base (7) and covering the upper side of the winding roller (8), a pressing roller (11) movably arranged on one side of the winding roller (8), an adjusting driver (12) arranged on the moving base (7) and used to drive the pressing roller (11) to move close to or away from the winding roller (8), a plurality of pressing feeding rollers (13) rotatingly connected to the moving base (7) and a plurality of pressing discharging rollers (14) rotatingly connected to the moving base (7), the plurality of pressing discharging rollers (14) are distributed on the outer side of the plurality of pressing feeding rollers (13), the moving base (7) is provided with a step (15) close to one end of the rack (1), the side wall of the step (15) is rotatingly connected with a rotating piece (16), the top wall of the step (15) is installed with a guide sleeve (17), the top surface of the rack (1) is horizontally installed with a guide rail (18) rollingly abutting against the rotating piece (16) and a guide column (19) slidingly connected with the guide sleeve (17), and the moving base (7) is locked on the rack (1) through a locking piece.

2. A recto-verso selective printing apparatus according to claim 1, characterized in that: The moving base (7) is provided with a mounting groove (20), and the UV light curing device (10) is installed in the mounting groove (20).

3. The device according to claim 1, wherein: The rack (1) is rotatingly connected with an output guide roller (21), and the output guide roller (21) is located on the side of the rear guide roller (6) away from the front and back printing machine (2).

4. The device according to claim 1, wherein: The rack (1) is installed with a color mark sensor (22), and the color mark sensor (22) is located above the front guide roller (4).

5. The device according to claim 1, wherein: The guide sleeve (17) is embedded with a lubricating ring (23), and the lubricating ring (23) is slidingly sleeved on the outer side of the guide column (19).

6. The device according to claim 1, wherein: The rotating piece (16) is a bearing or a rotating wheel.

7. The device according to claim 1, wherein: The adjusting driver (12) comprises a cylinder installed on the moving base (7) and a piston rod installed on the cylinder and slidingly connected with the moving base (7), and the pressing roller (11) is rotatingly connected with the piston rod.

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