Label printing device

Abstract

The present invention discloses a label printing device, including a printing bin, which is arranged on a base, and printing inlets and printing outlets are formed on both sides of the printing bin; a printing platform, which is arranged inside the printing bin through a bracket, and first roller shafts, second roller shafts and third roller shafts with synchronous rotation are arranged on both sides of the printing platform close to the printing inlets and printing outlets; a first pressing plate, which is arranged inside the printing bin and is located above the first roller shaft and the second roller shaft; and a second pressing plate, which is rotatably connected to the bracket and is located above the third roller shaft. By horizontally arranging driving rollers on the base in the present invention, multiple groups of label printing paper rolls can be arranged on the driving rollers, and under the action of driving devices such as a nozzle bracket, a slider, a guide rod, a guide plate, etc., the printing nozzle can move horizontally, that is, the printing of multiple groups of label papers is realized, thereby improving the printing efficiency and making the whole device suitable for industrial-scale printing operations.

Description

Technical Field

[0001] The present invention relates to the technical field of label printing devices, and particularly to a label printing device. Background Art

[0002] Chinese Patent Publication No.: CN113428458A discloses an automatic label sucking and attaching device for a packaging machine, which includes a frame, a label peeling mechanism, and a label sucking and attaching mechanism. The label peeling mechanism includes a label rack, a printer, and an anti-sticking plate. The label sucking and attaching mechanism includes a swing arm, a driving motor, a label attaching rack, a suction nozzle, and a pressing plate. The label attaching rack is connected to a rotating shaft, the rotating shaft is connected to one end of the swing arm, a first synchronous pulley is provided on the rotating shaft, a driving shaft is provided at the other end of the swing arm, and a second synchronous pulley is provided on the driving shaft. The frame corresponds to the anti-sticking plate as the label sucking station, and one end corresponding to the conveyor belt is the label attaching station. However, there are still the following drawbacks in actual use:

[0003] 1. The above-mentioned printing device can only print a group of labels at a time, and in large-scale industrial production, its printing efficiency is low;

[0004] 2. In the above-mentioned printing device, as the printed label paper continuously runs, the distance between the printed label paper and the printing nozzle is likely to change, resulting in the printing nozzle being unable to perform effective printing operations, thereby affecting the printing quality. Summary of the Invention

[0005] The purpose of the present invention is to provide a label printing device to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A label printing device includes

[0008] A printing chamber, which is arranged on a base, and printing inlets and printing outlets are provided on both sides of the printing chamber;

[0009] A printing platform, which is arranged inside the printing chamber through a bracket, and first roller shafts, second roller shafts, and third roller shafts with synchronous rotation are provided on both sides of the printing platform close to the printing inlets and printing outlets to drive the printed label paper to enter the printing chamber from the printing inlets and leave the printing chamber from the printing outlets;

[0010] A first pressing plate, which is arranged inside the printing chamber and is located above the first roller shaft and the second roller shaft for pressing the printed label paper;

[0011] A second pressing plate, which is rotatably connected to the bracket and is located above the third roller shaft for pressing the printed label paper;

[0012] The nozzle support is movably arranged on the support. Guide rods and guide plates are respectively arranged transversely on the support. The lower end of the nozzle support is slidably arranged on the guide rods through sliders, and its upper end is slidably connected to the guide plate. A pair of synchronous pulleys are rotatably arranged at both ends in the transverse direction of the support. One of the synchronous pulleys is in transmission connection with the second motor on the support. A second synchronous belt is wound around the two synchronous pulleys at both ends, and the second synchronous belt is connected to the nozzle support to drive the nozzle support to move transversely along the support.

[0013] The driving bin is arranged on the base and symmetrically arranged with respect to the printing bin for receiving and releasing the printing label paper. A driving roller extending in the transverse direction of the printing bin is rotatably arranged on the driving bin, and a third synchronous pulley is arranged at one end of the driving roller extending into the interior of the driving bin.

[0014] The third motor is arranged inside the driving bin. A fourth synchronous pulley is arranged on the main shaft of the third motor. A synchronous belt is wound around the fourth synchronous pulley and the third synchronous pulley to drive the driving roller to rotate; and

[0015] The tensioning device is arranged inside the driving bin for tensioning the label printing paper on both sides.

[0016] Preferably, a first motor is arranged on the support. A first synchronous pulley is arranged on the main shaft of the first motor. A second synchronous pulley and a first driving wheel are arranged at one end of the third roller shaft. A first synchronous belt is wound around the first synchronous pulley and the second synchronous pulley. The first driving wheel is engaged with the second driving wheel on the support, and the second driving wheel is engaged with the third driving wheel at the end of the second roller shaft. The fourth driving wheel on the second roller shaft drives the sixth driving wheel on the first roller shaft to rotate through the fifth driving wheel, so as to realize the synchronous and co-rotational movement of the first roller shaft, the second roller shaft and the third roller shaft.

[0017] Preferably, the second pressing plate is composed of multiple groups of pressing blocks arranged side by side transversely. Each group of pressing blocks corresponds to a group of label printing papers. A pressing wheel is rotatably arranged at one end of each pressing block close to the printing inlet.

[0018] Preferably, a second supporting plate is integrally arranged at one end of the printing platform close to the printing inlet, and a first supporting plate is arranged at one end of the printing platform close to the printing outlet.

[0019] Preferably, a paper pressing wheel is rotatably arranged on the first pressing plate.

[0020] Preferably, multiple groups of feet capable of adjusting the height are arranged at the lower part of the base.

[0021] Preferably, a balance block is arranged at one end of the driving roller extending into the driving bin.

[0022] Preferably, the tensioning device includes a tensioning roller arranged transversely along the base. One end of the tensioning roller passes through a tensioning groove in the arc-shaped structure on the driving bin and is connected to one end of a connecting rod, and the other end of the connecting rod is rotatably connected to the driving roller.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0024] By arranging the driving roller transversely on the base in the present invention, multiple groups of label printing paper rolls can be arranged on the driving roller. And under the action of driving devices such as the nozzle support, slider, guide rod, and guide plate, the printing nozzle can move horizontally, that is, the printing of multiple groups of label papers is realized, thereby improving the printing efficiency and making the whole device suitable for industrial-scale printing operations. At the same time, by setting tensioning rollers capable of automatic tensioning on both sides of the driving bin, the label printing paper is in a tensioned state during the process of winding and unwinding, avoiding printing defects caused by the scattering of the label paper. More importantly, by arranging multiple groups of pressing plates on the roller shaft, the label printing paper on the printing platform always remains in a horizontal state, thereby keeping the distance between the label printing paper and the printing nozzle fixed, and finally ensuring the stability of the printing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic structural diagram of the present invention;

[0026] Figure 2 is a schematic structural diagram of the printing bin of the present invention;

[0027] Figure 3 is a schematic structural diagram of the printing bin of the present invention from another angle;

[0028] Figure 4 is a top view of the printing bin of the present invention;

[0029] Figure 5 is Figure 2 an enlarged schematic diagram of the structure of area A in

[0030] Figure 6 is Figure 4 an enlarged schematic diagram of the structure of area B in

[0031] Figure 7 is a schematic structural diagram of the interior of the driving bin of the present invention;

[0032] Figure 8 is a schematic structural diagram of the second pressing plate of the present invention;

[0033] Figure 9 is a schematic structural diagram of the printing platform of the present invention;

[0034] In the figure: 1 base, 2 printing chamber, 3 bracket, 4 printing platform, 5 first roller, 6 second roller, 7 third roller, 8 first motor, 9 first synchronous pulley, 10 first synchronous belt, 11 second synchronous pulley, 12 first driving wheel, 13 second driving wheel, 14 third driving wheel, 15 fourth driving wheel, 16 fifth driving wheel, 17 sixth driving wheel, 18 first pressing plate, 19 second pressing plate, 20 pressing block, 21 pressing wheel, 22 first supporting plate, 23 nozzle bracket, 24 slider, 25 guide rod, 26 guide plate, 27 second synchronous belt, 28 second motor, 29 driving chamber, 30 driving roller, 31 third synchronous pulley, 32 third motor, 33 fourth synchronous pulley, 34 tensioning roller, 35 tensioning groove, 36 connecting rod, 37 balancing weight, 38 supporting leg, 39 second supporting plate. Detailed implementation manner

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0036] Please refer to Figures 1-9 , the present invention provides a technical solution:

[0037] A label printing device, including

[0038] A printing chamber 2, which is fixedly arranged on a base 1. Six groups of supporting legs 38 capable of adjusting the height are arranged at the lower part of the base 1. By arranging the supporting legs 38, the base 1 can be kept in a horizontal state, so that the whole device can be applicable to an uneven working ground. Printing inlets and printing outlets are arranged on both sides of the printing chamber 2. During the printing process, the printed label paper enters the printing chamber 2 from the printing inlet on the right side (a printing nozzle is arranged in the printing chamber 2). After the label paper is printed, it leaves from the printing outlet on the left side and is wound onto a corresponding reel; A cover plate made of a transparent material and capable of being turned over is arranged on the printing chamber 2. First of all, the cover plate made of a transparent material enables the operator to directly observe the internal situation of the printing chamber 2, and the arrangement of the turning structure is convenient for the operator to repair the inside of the printing chamber 2;

[0039] The printing platform 4 is fixedly arranged inside the printing chamber 2 through the bracket 3. The first roller 5, the second roller 6 and the third roller 7 with synchronous rotation are arranged on both sides of the printing platform 4 near the printing inlet and the printing outlet to drive the printed label paper to enter the printing chamber 2 from the printing inlet and leave the printing chamber 2 from the printing outlet. The printing platform 4 is provided with multiple groups of grooves, and the first roller 5, the second roller 6 and the third roller 7 are rotatably arranged in the grooves. The rollers are connected by transmission and realize synchronous rotation in the same direction under the action of the power device;

[0040] A first motor 8 is fixedly arranged on the bracket 3, a first synchronous wheel 9 is arranged on the main shaft of the first motor 8, a second synchronous wheel 11 and a first driving wheel 12 are arranged on one end of the third roller shaft 7 extending to the outside of the bracket 3, a first synchronous belt 10 is arranged around the first synchronous wheel 9 and the second synchronous wheel 11, the first driving wheel 12 is meshed with the second driving wheel 13 on the bracket 3, the second driving wheel 13 is arranged on the bracket 3 through a connecting shaft, and has an over-conduction effect, the second driving wheel 13 is meshed with the third driving wheel 14 at the end of the second roller shaft 6, the fourth driving wheel 15 on the second roller shaft 6 drives the sixth driving wheel 17 on the first roller shaft 5 to rotate through the fifth driving wheel 16, so as to realize the synchronous and same-direction rotation of the first roller shaft 5, the second roller shaft 6 and the third roller shaft 7; the fifth driving wheel 16 is rotatably arranged on the bracket 3 through a rotating shaft; by setting a transmission gear train, the first motor 8 drives the first roller shaft 5, the second roller shaft 6 and the third roller shaft 7 to rotate synchronously in the same direction.

[0041] A second support plate 39 is integrally provided on one end of the printing platform 4 close to the printing inlet, and a first support plate 22 is provided on one end of the printing platform 4 close to the printing outlet; the second support plate 39 facilitates the introduction of printing paper during initial printing, and at the same time, the setting of the first support plate 22 ensures that the printed label paper will not interfere with other components when it is away from the printing chamber 2, effectively avoiding damage to the label paper;

[0042] The first pressing plate 18 is arranged inside the printing chamber 2 and located above the first roller 5 and the second roller 6, and is used to press and hold the printed label paper; a pressing wheel is rotatably arranged on the first pressing plate 18; the printed label paper passes between the first pressing plate 18 and the first roller 5 and the second roller 6, so the first pressing plate 18 exerts downward pressure on the printed label paper;

[0043] The second pressing plate 19 is rotatably connected to the bracket 3 and is located on the upper part of the third roller 7, and is used for pressing and holding the printed label paper; the second pressing plate 19 is composed of a plurality of groups of pressing blocks 20 arranged in parallel in a transverse direction, each group of pressing blocks 20 corresponds to a group of label printing paper, and a pressing wheel 21 is rotatably provided on one end of the pressing block 20 close to the printing inlet; the segmented second pressing plate 19 can accurately press and hold each group of label printing paper and reduce the influence between them;

[0044] From the above description, it can be seen that: by arranging multiple sets of pressing plates on the corresponding rollers, the label printing paper on the printing platform 4 is always kept in a horizontal state, so that the distance between the label printing paper and the printing nozzle is kept fixed, and finally the stability of the printing quality is ensured;

[0045] The nozzle bracket 23 is movably arranged on the bracket 3, and the print nozzle is fixedly installed on the nozzle bracket 23. The bracket 3 is respectively provided with a guide rod 25 and a guide plate 26 in the horizontal direction. The lower end of the nozzle bracket 23 is slidably arranged on the guide rod 25 through a slider 24, and the upper end thereof is slidably connected to the guide plate 26. A pair of synchronous wheels are rotatably arranged at both ends of the bracket 3 in the horizontal direction, one side of which is connected to the second motor 28 on the bracket 3 for transmission, and a second synchronous belt 27 is arranged around the synchronous wheels at both ends, and the second synchronous belt 27 is connected to the nozzle bracket 23 to drive the nozzle bracket 23 to move horizontally along the bracket 3. The advantage of such a setting is that the print nozzle can realize horizontal movement, that is, realize the printing of multiple groups of label papers, thereby improving the printing efficiency, and making the entire device suitable for industrial-scale printing operations;

[0046] The drive chamber 29 is arranged on the base 1 and symmetrically arranged with respect to the printing chamber 2, and is used for storing and receiving printed label paper. A drive roller 30 extending in the transverse direction of the printing chamber 2 is rotatably arranged on the drive chamber 29, and a third synchronous wheel 31 is arranged on one end of the drive roller 30 extending to the inside of the drive chamber 29; a balance block 37 is arranged on one end of the drive roller 30 extending to the inside of the drive chamber 29;

[0047] a third motor 32, which is disposed inside the driving compartment 29, a fourth synchronous wheel 33 is disposed on the main shaft of the third motor 32, and a synchronous belt is wound around the fourth synchronous wheel 33 and the third synchronous wheel 31 to drive the driving roller 30 to rotate; and

[0048] The tensioning device is arranged in the driving bin 29 and is used for tensioning the label printing paper on both sides; the tensioning device includes a tensioning roller 34 arranged horizontally along the base 1, one end of the tensioning roller 34 passes through the tensioning groove 35 of the arc structure on the driving bin 29 and is connected to one end of the connecting rod 36, and the other end of the connecting rod 36 is rotatably connected to the driving roller 30; when the printed label paper moves away from or enters the driving roller 30, it will first wrap around the tensioning roller 34, and the tensioning roller 34 can fit tightly with the printing paper under the action of its own gravity. At the same time, the setting of the arc groove 35 enables the tensioning roller 34 to be adaptively adjusted; it can be seen from the above description: by arranging the tensioning roller 34 that can be automatically tensioned on the driving bins 29 on both sides, the label printing paper is in a tensioned state during the process of retracting and releasing, thereby avoiding printing defects caused by the scattered label paper.

[0049] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A label printing device, Features: include A printing chamber (2) is arranged on the base (1), and a printing inlet and a printing outlet are provided on two sides of the printing chamber (2); A printing platform (4) is arranged inside the printing chamber (2) via a bracket (3); a first roller (5), a second roller (6) and a third roller (7) that rotate synchronously are arranged on both sides of the printing platform (4) near the printing inlet and the printing outlet, so as to drive the printed label paper to enter the printing chamber (2) from the printing inlet and leave the printing chamber (2) from the printing outlet; A first pressing plate (18) is arranged inside the printing chamber (2) and located above the first roller (5) and the second roller (6), and is used for pressing and holding the printed label paper; A second pressing plate (19) is rotatably connected to the bracket (3) and is located on the upper part of the third roller (7) and is used for pressing and holding the printed label paper; A nozzle bracket (23) is movably arranged on the bracket (3), and the bracket (3) is respectively provided with a guide rod (25) and a guide plate (26) in the transverse direction. The lower end of the nozzle bracket (23) is slidably arranged on the guide rod (25) through a slider (24), and the upper end thereof is slidably connected to the guide plate (26). A pair of synchronous wheels are rotatably arranged at both ends of the bracket (3) in the transverse direction, wherein one side of the synchronous wheels is drivingly connected to a second motor (28) on the bracket (3), and a second synchronous belt (27) is arranged around the synchronous wheels at both ends, and the second synchronous belt (27) is connected to the nozzle bracket (23) to drive the nozzle bracket (23) to move transversely along the bracket (3); A drive bin (29) is disposed on the base (1) and is symmetrically arranged with respect to the printing bin (2), and is used for storing and receiving printed label paper. A drive roller (30) is rotatably disposed on the drive bin (29) and extends in a transverse direction of the printing bin (2). A third synchronous wheel (31) is disposed on one end of the drive roller (30) extending to the interior of the drive bin (29); a third motor (32) disposed inside the driving compartment (29); a fourth synchronous wheel (33) being disposed on a main shaft of the third motor (32); a synchronous belt being wound around the fourth synchronous wheel (33) and the third synchronous wheel (31) to drive the driving roller (30) to rotate; as well as A tensioning device, which is arranged in the driving compartment (29) and is used to tension the label printing paper on both sides; The second pressing plate (19) is composed of a plurality of groups of pressing blocks (20) arranged in parallel in a transverse direction, each group of the pressing blocks (20) corresponds to a group of label printing papers, and a pressing wheel (21) is rotatably provided on one end of the pressing block (20) close to the printing inlet; The tensioning device comprises a tensioning roller (34) arranged transversely along the base (1); one end of the tensioning roller (34) passes through a tensioning groove (35) of an arc structure on the driving bin (29) and is connected to one end of a connecting rod (36); the other end of the connecting rod (36) is rotatably connected to the driving roller (30).

2. A label printing device according to claim 1, Features: A first motor (8) is provided on the bracket (3). A first synchronous pulley (9) is provided on the main shaft of the first motor (8). A second synchronous pulley (11) and a first driving pulley (12) are provided at one end of the third roller shaft (7). A first synchronous belt (10) is wound around the first synchronous pulley (9) and the second synchronous pulley (11). The first driving pulley (12) meshes with a second driving pulley (13) on the bracket (3). The second driving pulley (13) meshes with a third driving pulley (14) at the end of the second roller shaft (6). A fourth driving pulley (15) on the second roller shaft (6) drives a sixth driving pulley (17) on the first roller shaft (5) through a fifth driving pulley (16), so as to realize the synchronous and same-direction rotation of the first roller shaft (5), the second roller shaft (6) and the third roller shaft (7).

3. A label printing device according to claim 1, characterized in that: A second support plate (39) is integrally provided at one end of the printing platform (4) close to the printing inlet, and a first support plate (22) is provided at one end of the printing platform (4) close to the printing outlet.

4. A label printing device according to claim 1, characterized in that: A paper pressing wheel is rotatably provided on the first pressing plate (18).

5. A label printing device according to claim 1, characterized in that: A plurality of sets of feet (38) capable of adjusting the height are provided at the lower part of the base (1).

6. A label printing device according to claim 1, characterized in that: A balance weight (37) is provided at one end of the driving roller (30) extending into the driving chamber (29).

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