Printer

Abstract

The utility model discloses a printer. The printer comprises a frame; the printing control system is at least partially arranged in the rack and is provided with a printing head; the first fixed roller group can be matched with the paper pressing mechanism and is used for fixing the packing material with the determined length; the floating roller group comprises at least two floating rollers, the floating rollers can do synchronous reciprocating rectilinear motion, and the packing materials on the two sides of the floating rollers are parallel to each other; and the second fixed roller group is used for tensioning the packing material between the first fixed roller groups and enabling part of the packing material to do reciprocating motion in the printing range of the printing head when the floating roller group does reciprocating linear motion. According to the utility model, the printing head is fixed, when the packaging machine stops, the floating rollers of the floating roller group do reciprocating linear motion, so that part of packaging materials move relative to the printing head within the printing range of the printing control system, printing is realized under the condition that the printing head does not move, the printing range is large, the structure is compact, and the printing control system works reliably; full-width printing can be achieved, and the printing effect is good.

Description

Technical Field

[0001] The utility model belongs to the technical field of printing machines, and particularly relates to a printer. Background Art

[0002] Currently, in packaging machines, especially blister packaging machines, it is necessary to spray-print some information such as production date, shelf life, production batch number, etc. on the packaging material. The packaging machine moves intermittently. To ensure the overall operating efficiency of the packaging machine, the running time of the packaging material is usually short, the moving speed is fast, and the packaging material moves in a step-by-step manner, not at a constant speed. Therefore, the direct spray-printing effect is not good. In addition, if spray-printing is directly performed during the running of the packaging material of the packaging machine, the spray-printing effect cannot be guaranteed during the acceleration and deceleration stages of the packaging material, and full-width spray-printing over the entire length cannot be achieved.

[0003] Chinese Patent CN216101094 U discloses "An Inkjet Coding Mechanism and a Packaging Machine", which uses a first driving mechanism to drive the inkjet head to perform horizontal reciprocating movement, and a film feeding mechanism is used to unwind the packaging film and make the inkjet head face the front or back of the packaging film for inkjet coding. The inkjet head of the above structure is small and is mainly used for spray-printing a small amount of content such as production date and batch number. When large-format spray-printing is required, multiple inkjet heads need to be combined to form a wide inkjet head group, and the inkjet head structure is huge; if the existing structure is continued to be used, the inkjet head moving mechanism also needs to increase in size accordingly. At the same time, when the inkjet printing stroke is large, the size of the inkjet coding machine will also increase accordingly. In addition, when the inkjet head group reciprocates frequently, it may cause inkjet system failures and ink supply failures. Content of the Utility Model

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a printer, in which the print head is relatively fixed, and a floating roller group reciprocates linearly, so that the packaging material moves relative to the print head, with a large printing range and good printing effect.

[0005] The technical solution adopted by the utility model to solve its technical problems is: A printer, comprising:

[0006] A frame;

[0007] A printing control system, at least partially disposed inside the frame, with a print head;

[0008] A first fixed roller group, which can cooperate with a paper pressing mechanism to fix a packaging material of a determined length;

[0009] A floating roller group, including at least two floating rollers, which can reciprocate linearly synchronously, and the packaging materials on both sides of the floating rollers are parallel to each other;

[0010] A second fixed roller group, used to tension the packaging material between the first fixed roller groups, so that part of the packaging material reciprocates within the printing range of the print head when the floating roller group reciprocates linearly.

[0011] Further, the floating rollers are arranged in parallel.

[0012] Further, the floating rollers perform reciprocating linear motion along the height direction of the frame, and the print head is arranged below the inkjet control system.

[0013] Further, the frame is provided with guide rails, and at least part of the print control system can be translated in and out of the frame along the guide rails.

[0014] Further, the end of the guide rail has a cleaning position, and an ink receiving groove is arranged below the cleaning position.

[0015] Further, the print head is fixedly arranged in the frame through an actuator.

[0016] Further, the actuator includes a pressing device and a cylinder with a telescopic shaft. The pressing device includes a pressing block, a base adjacent to the telescopic shaft, and a connecting rod assembly arranged between the pressing block, the telescopic shaft of the cylinder and the base. When the telescopic shaft moves, the pressing block abuts against or moves away from the print head.

[0017] Further, an adjusting roller is further included. External gears are provided at both ends of the adjusting roller, and the external gears can cooperate with the straight tooth sections to finely adjust the printing position of the packaging material.

[0018] Further, the second fixed roller group includes at least two adjacent tension adjusting wheels.

[0019] Further, the downstream of the packaging material is connected to a packaging machine. The beneficial effects of the present utility model are as follows: 1) It changes the structure of the traditional movable print head, sets the print head to be relatively fixed, and when the packaging machine stops, the floating rollers of the floating roller group perform reciprocating linear motion, so that part of the packaging material moves relative to the print head within the printing range of the print control system, realizing printing without the movement of the print head. The printing range is large, the structure is compact, the print control system works reliably, the printing line speed can be reduced, full-width printing can be achieved, and the printing effect is good; 2) The print control system can be an inkjet control system or a thermal transfer control system, which can flexibly adapt to different usage scenarios; 3) The setting of the guide rails facilitates the translation of the print head outside the frame for wiping, cleaning and maintenance, not only extending the service life of the print control system, but also ensuring a good printing effect. Description of the Drawings

[0020] Figure 1 It is the front view of the partial structure inside the present utility model.

[0021] Figure 2 It is a schematic diagram of the first fixed roller group, the floating roller group and the second fixed roller group in the present utility model.

[0022] Figure 3 Schematic diagram of the frame in the present utility model provided with a guide rail and an ink receiving groove.

[0023] Figure 4 Schematic diagram of the mating structure between a part of the printing control system and the guide rail in the present utility model.

[0024] Figure 5 Side view of the partial structure inside the present utility model.

[0025] Figure 6 Top view of the partial structure inside the present utility model.

[0026] Figure 7 Schematic of the actuator of the present utility model Figure 1 , at this time, the pressing block is far from the print head.

[0027] Figure 8 Schematic of the actuator of the present utility model Figure 2 , at this time, the pressing block is pressed on the print head.

[0028] Figure 9 Schematic diagram of the structure where the packaging material braking mechanism is located in the present utility model.

[0029] Wherein, 1 - frame, 11 - guide rail, 111 - cleaning position, 112 - locking mechanism, 12 - ink receiving groove, 2 - printing control system, 21 - print head, 3 - first fixed roller group, 31 - fixed roller, 4 - paper pressing mechanism, 5 - packaging material, 51 - first section, 6 - floating roller group, 61 - floating roller, 611 - floating roller driving mechanism, 7 - second fixed roller group, 71 - tension adjusting wheel, 8 - actuator, 81 - pressing device, 811 - pressing block, 812 - first connecting rod, 813 - second connecting rod, 814 - third connecting rod, 815 - base, 82 - cylinder, 821 - telescopic shaft, 9 - adjusting roller, 91 - external gear, 92 - straight tooth section, 10 - packaging material braking mechanism, 101 - packaging material braking mechanism cylinder, 102 - pressing strip. Detailed implementation manners

[0030] In order to enable those skilled in the art to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0031] Such as Figures 1-6As shown, a printer includes a frame 1, a printing control system 2, a first fixed roller group 3, a paper pressing mechanism 4, a floating roller group 6, and a second fixed roller group 7.

[0032] At least part of the printing control system 2 is arranged inside the frame 1 and is provided with a print head 21. In this embodiment, the printing control system 2 is specifically an inkjet printing control system, and the print head 21 is a nozzle. Of course, in other embodiments, the printing control system 2 can also be a thermal transfer printing control system, which is not specifically limited.

[0033] The first fixed roller group 3 includes at least two fixed rollers 31, which can cooperate with the paper pressing mechanism 4 to fix a packaging material 5 of a determined length. In other words, the fixed rollers 31 can oppositely clamp the packaging material 5 with the paper pressing mechanism 4. The two paper pressing mechanisms 4 respectively clamp the two ends of the packaging material 5 with the two fixed rollers 31. The length of the packaging material 5 determined by the above structure is fixed and unchanged, and the packaging material 5 is tensioned by the first fixed roller group 3. The downstream of the packaging material 5 is connected to a packaging machine (not shown in the figure).

[0034] The floating roller group 6 includes at least two floating rollers 61 arranged in parallel. The floating rollers 61 can move synchronously in a reciprocating linear motion, and the packaging materials 5 on both sides of the floating rollers 61 are parallel to each other, so as to ensure that when the floating rollers 61 move, the length of the packaging material 5 determined by the first fixed roller group 3 remains unchanged. In this embodiment, the floating rollers 61 move in a reciprocating linear motion along the height direction of the frame 1 under the drive of a floating roller drive mechanism 611. Specifically, the frame 1 can be placed vertically, the print head 21 is arranged below the printing control system 2, and the two floating rollers 61 move vertically upward synchronously, or the two floating rollers 61 move vertically downward synchronously. The outer diameters of the floating rollers 61 can be the same or different, which is not specifically limited as long as the packaging materials 5 can be parallel to each other and the printing speed of the print head 21 can match the traveling speed of the packaging material 5.

[0035] The second fixed roller group 7 is used to tension the packaging material 5 between the first fixed roller group 3, so that when the floating roller group 6 moves in a reciprocating linear motion, part of the packaging material 5 moves reciprocally within the printing range of the print head 21. Specifically, as Figure 2 shown, when the two floating rollers 61 move vertically upward synchronously, a section 51 of the packaging material 5 located below the print head 21 moves downward. When the two floating rollers 61 move vertically downward synchronously, the section 51 of the packaging material 5 located below the print head 21 moves upward. Moreover, as long as the up and down moving strokes of the two floating rollers 61 are the same, the reciprocating moving distance of the section 51 is also the same, which is convenient for the effective printing of the print head 21 in the same area.

[0036] There is no limit to the number and setting position of the fixed rollers in the second fixed roller group 7. In this embodiment, the second fixed roller group 7 includes at least two adjacent tension adjusting wheels 71. The adjacent tension adjusting wheels 71 respectively tension the packaging material 5 in opposite directions, ensuring that the first section 51 of the packaging material 5 can be effectively tensioned, so that the first section 51 corresponds to the print head 21.

[0037] Of course, in other embodiments, the print head 21 can also be arranged on the side of the printing control system 2, and the two floating rollers 61 synchronously move horizontally left and right. There is no specific limitation.

[0038] To facilitate wiping and maintenance of the part of the printing control system 2 where the print head 21 is located, a guide rail 11 is provided on the frame 1, and at least part of the printing control system 2 can be translated in and out of the frame 1 along the guide rail 11. In order to enable the printing control system 2 to stop moving when it moves along the guide rail 11 to the target position, as Figure 5 、 Figure 6 shown, the print head 21 is fixedly arranged in the frame 1 through an actuator 8. Specifically, the actuator 8 includes a pressing device 81 and a cylinder 82 with a telescopic shaft 821. The pressing device 81 includes a pressing block 811, a base 815 adjacent to the telescopic shaft 821, and a connecting rod assembly. The connecting assembly includes a first connecting rod 812 and a second connecting rod 813 rotatably connected to the pressing block 811, and a third connecting rod 814 rotatably connected to the telescopic shaft 821. The other end of the first connecting rod 812 is rotatably connected to the telescopic shaft 821, the other end of the second connecting rod 813 is rotatably connected to the base 815, and the other end of the third connecting rod 814 is connected to the second connecting rod 813. When the telescopic shaft 821 extends out of the cylinder 82, under the drive of the first connecting rod 812, the second connecting rod 813 and the third connecting rod 814, the pressing block 811 presses on the print head 21. When the telescopic shaft 821 retracts into the cylinder 82, under the action of the first connecting rod 812, the second connecting rod 813 and the third connecting rod 814, the pressing block 811 moves away from the print head 21 and one end fits on the base 815.

[0039] The end of the guide rail 11 has a cleaning position 111, that is, when the printing control system 2 moves to the cleaning position 111, the print head 21 is completely exposed outside the frame 1, which is convenient for wiping and maintaining the print head 21. A locking mechanism 112 is provided at the cleaning position 111, and the locking mechanism 112 is used to fix part of the printing control system 2 at the cleaning position 111. Specifically, the locking mechanism 112 is a pin with a spring, which is connected to the outer shell of the printer. A receiving trough 12 is provided below the cleaning position 111, which is used to receive the impurities generated by wiping and cleaning, ensuring the overall cleanliness of the printer and being beneficial to the printing and packaging use of the packaging material 5.

[0040] To facilitate the adjustment of the position of the printing area on the packaging material 5, that is, to adjust the position of the printed content on the packaging material 5, it also includes an adjustment roller 9 with external gears 91 at both ends. The external gears 91 can cooperate with the straight tooth segments 92. By engaging the external gears 91 with the straight tooth segments 92 at different positions, fine adjustment of the length of the packaging material 5 between the sealing part of the packaging material and the printer is achieved, and finally fine adjustment of the position of the printing area of the first section 51 is realized. In this embodiment, the adjustment roller 9 is arranged downstream of the packaging material 5.

[0041] To ensure the stability of the packaging material 5, a packaging material braking mechanism 10 is provided at both ends where the printing control system 2 enters and exits the packaging material 5. On the premise that the paper pressing mechanism 4 exists, before the floating roller group 6 operates, the packaging material 5 is braked by the packaging material braking mechanism 10 to prevent the packaging material 5 from shifting randomly. The packaging material braking mechanism 10 specifically includes a cylinder 101 and a pressing strip 102 connected to the cylinder 101. The pressing strip 102 can press or release the packaging material on the second roller group 7 under the drive of the cylinder 101.

[0042] The working process of the present utility model is as follows: after the packaging machine moves forward for a period of time, it intermittently stops moving. With the cooperation of the paper pressing mechanism 4 and the first fixed roller group 3, the length of the packaging material 5 between the two paper pressing mechanisms 4 is fixed; the floating rollers 61 of the floating roller group 6 move upward synchronously, and the first section 51 of the packaging material 5 moves downward, and the print head 21 prints information on the packaging material 5; the floating rollers 61 of the floating roller group 6 move downward synchronously, and the first section 51 of the packaging material 5 moves upward, and the print head 21 prints information in the same area on the packaging material 5 in the opposite direction. Its printing duration is long, the printing range is wide, and the content of the printed information is not restricted; the packaging machine continues to move forward for a period of time and then intermittently stops moving, repeating the above printing operation.

[0043] The above specific implementation manners are used to explain and illustrate the present utility model, rather than to limit the present utility model. Any modification and change made to the present utility model within the spirit and protection scope of the claims of the present utility model fall within the protection scope of the present utility model.

Claims

1. A printer, characterized in that: include: frame; a print control system, at least partially disposed within the frame, having a print head; The first fixed roller group can cooperate with the paper pressing mechanism to fix the packaging material of a certain length; A floating roller group includes at least two floating rollers, which can synchronously reciprocate linearly, and the packaging materials on both sides of the floating rollers are parallel to each other; The second fixed roller group is used to tension the packaging material between the first fixed roller groups, so that part of the packaging material moves back and forth within the printing range of the print head when the floating roller group reciprocates in a linear motion.

2. The printer according to claim 1, characterized in that: The floating rollers are arranged in parallel.

3. The printer according to claim 1, characterized in that: The floating roller reciprocates in a straight line along the height direction of the frame, and the print head is arranged below the printing control system.

4. The printer according to claim 1, characterized in that: The frame is provided with a guide rail, and at least a portion of the printing control system can be translated into and out of the frame along the guide rail.

5. The printer according to claim 4, characterized in that: The end of the guide rail is provided with a cleaning position, and an ink receiving groove is provided below the cleaning position.

6. The printer according to claim 1, characterized in that: The print head is fixedly arranged in the frame through an actuator.

7. The printer according to claim 6, characterized in that: The actuator includes a clamping device and a cylinder with a telescopic shaft. The clamping device includes a clamping block, a base arranged adjacent to the telescopic shaft, and a connecting rod assembly arranged between the clamping block, the cylinder telescopic shaft, and the base. When the telescopic shaft moves, the clamping block abuts against or moves away from the print head.

8. The printer according to claim 1, characterized in that: It also includes an adjusting roller with external gears at both ends. The external gears can cooperate with the spur gear segments to fine-tune the printing position of the packaging material.

9. The printer according to claim 1, characterized in that: The second fixed roller set includes at least two tensioning adjustment wheels arranged adjacent to each other.

10. The printer according to claim 1, characterized in that: The downstream of the packaging material is connected to a packaging machine.

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