CN111572212B - Floating roller mechanism, digital label printer and installation method - Google Patents
Floating roller mechanism, digital label printer and installation method Download PDFInfo
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- CN111572212B CN111572212B CN202010518561.6A CN202010518561A CN111572212B CN 111572212 B CN111572212 B CN 111572212B CN 202010518561 A CN202010518561 A CN 202010518561A CN 111572212 B CN111572212 B CN 111572212B
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
- B41J3/407—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
- B41J3/4075—Tape printers; Label printers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J11/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
- B65H23/26—Registering, tensioning, smoothing or guiding webs longitudinally by transverse stationary or adjustable bars or rollers
Abstract
The invention is suitable for the field of floating rolls, and provides a floating roll mechanism, a digital label printer and an installation method. Solves the technical problems that the traditional narrow digital printer is mostly single-sheet printing, has low production speed, and is not suitable for industrialized label production because the paper is single-sheet paper.
Description
Technical Field
The invention belongs to the field of floating rollers, and particularly relates to a floating roller mechanism, a digital label printer and an installation method.
Background
Under the existing market environment, the demands of more and more label customers are gradually changed to small-batch personalized printing labels, if the traditional offset printing is used, the cost can be greatly increased by printing with a flexo printing machine, and the efficiency is low due to the characteristics of the offset printing and the flexo printing technology, so that the problem is solved by the digital printing machine. The traditional narrow digital printer is mostly single-sheet printing, has low production speed, and is not suitable for industrialized label production because the paper is single-sheet paper.
Disclosure of Invention
The invention aims to provide a floating roller mechanism, a digital label printer and an installation method, and aims to solve the technical problems that most of traditional narrow digital printers are single-sheet printing, the production speed is low, and the paper is single-sheet paper and is not suitable for industrial label production.
The invention discloses a floating roller mechanism, which comprises a mounting flange fixedly arranged on a wallboard and penetrating through the wallboard and provided with a connecting shaft, a first lever arranged on the outer side of the wallboard and fixedly connected with one end of the connecting shaft of the mounting flange, a counterweight balance block arranged on one end of the first lever and used for balancing, a displacement sensor movably arranged on the outer side of the wallboard and movably connected with the other end of the first lever and used for measuring displacement distance, a second lever arranged on the inner side of the wallboard and fixedly connected with one end of the connecting shaft of the mounting flange, a floating roller arranged on the other end of the second lever and used for tensioning paper, and a cylinder movably arranged on the inner side of the wallboard and movably connected with the second lever at the movable end and used for pulling the second lever.
The invention further adopts the technical scheme that: the first lever and the second lever are on the same horizontal plane.
The invention further adopts the technical scheme that: the displacement sensor is a linear displacement sensor.
The invention further adopts the technical scheme that: the floating roller is an adjustable eccentric floating roller.
The invention further adopts the technical scheme that: the cylinder is a low friction cylinder.
The invention further provides a digital label printer, which further comprises a digital printer, an unreeling mechanism arranged on one side of the digital printer and provided with a deviation correcting unit and a first traction roller unit, a reeling mechanism arranged on the other side of the digital printer and provided with a second traction roller unit, and two floating roller mechanisms are respectively arranged on the unreeling mechanism and the reeling mechanism.
Another object of the present invention is to provide a method for installing a dancer roll mechanism of a digital label printer, the method comprising the steps of:
step S1: the mounting flange is mounted on the wallboard according to the mounting requirement, the first lever and the second lever are mounted on a connecting shaft of the mounting flange, and various acting forces applied to the mounting flange are analyzed according to the stress conditions of the first lever and the second lever;
step S2: installing a counterweight balance block, a displacement sensor, a floating roller and an air cylinder on the first lever and the second lever according to various acting forces;
step S3: and finally, the floating roller mechanism is balanced so as to control the tension of the paper.
The invention further adopts the technical scheme that: the step S1 further includes the steps of:
step S11: analyzing the forces acting on the first lever, namely the gravity of the counterweight, and recording G2 and the friction force of the displacement sensor as F2;
step S12: the force acting on the second lever is analyzed, the force exerted on the dancer roller by the paper is denoted as F1, the value is twice the paper tension, the paper tension is determined according to the digital printer, the gravity of the dancer roller is denoted as G1, and the force exerted on the second lever by the air cylinder is denoted as F3.
The invention further adopts the technical scheme that: the step S2 further includes the steps of:
step S21: taking a connecting shaft of a mounting flange as a fulcrum, recording as O, wherein the G2 acting force of a counterweight balance block needs to act on the E point of a first lever, the E point is the mounting position of the counterweight balance block, the F2 acting force of a displacement sensor needs to act on the B point of the first lever, and the B point is the movable fixed position of the displacement sensor;
step S22: according to the F1 acting force of the floating roller needs to act on the point A of the second lever, the point A is the installation position of the floating roller, the installation position of the air cylinder is determined according to the different positions of the air cylinders with different cylinder diameters acting on the second lever, the fixed movable position is recorded as D, when the output force is larger as the cylinder diameter is larger, the point D is closer to the point O, otherwise, the point D is closer to the point A, but the requirement that F1 xL2=F3 xL1 is satisfied, L2 is the distance from the point A to the point O, and L1 is the distance from the point D to the point A is satisfied.
The invention further adopts the technical scheme that: the step S3 further includes the steps of:
step S31: in the dancer mechanism, G1 and G2 are balanced about O point, so that the three forces applied by the dancer are F1, F2 and F3 respectively, and F2 is the friction of the displacement sensor itself, f2=0 during balancing, when the dancer is balanced, f1×l2=f3×l1 is required to be satisfied, L2 is the distance from point a to point O, and L1 is the distance from point D to point a, therefore, when we need to control the tension F1/2 of the paper, the force F3 of the cylinder can be adjusted, if the dancer is unbalanced, the rise and fall of point a will be caused, at this time, point B will rise and fall accordingly, at this time, the displacement sensor will feed back the displacement of point B to the pull roller unit, and the tension of the dancer mechanism will be adjusted to the balance force by adjusting the speed of the pull roller unit, thereby achieving the purpose of controlling the tension of the paper.
The beneficial effects of the invention are as follows: the double-traction-roller unit double-floating-roller mechanism is adopted to accurately control the tension of paper in the printing process, so that the paper runs more stably in a printing engine, the platform is perfectly matched with the host machine speed, the linkage is stable, the running is stable, the production speed is higher, the single-change speed is fast, the printing machine is suitable for medium and small-sized orders, plate making is not needed, plate changing and printing ink are not needed, the cost is low, the running is noise-free and pollution-free, and the printing quality is stable.
Drawings
FIG. 1 is a first block diagram of a dancer mechanism provided by an embodiment of the present invention;
FIG. 2 is a second block diagram of a dancer mechanism provided by an embodiment of the present invention;
FIG. 3 is a front view of a digital label printer according to an embodiment of the present invention;
FIG. 4 is a rear view of a digital label printer according to an embodiment of the present invention;
FIG. 5 is a perspective view of a digital label printer according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a floating roller stress of a floating roller mechanism according to an embodiment of the present invention.
Detailed Description
Reference numerals: 1-wallboard 2-connecting shaft 3-mounting flange 4-first lever 5-counter weight balancing piece 6-displacement sensor 7-second lever 8-dancer roll 9-cylinder 10-digital printer 11-rectify unit 12-first pull roll unit 13-unreeling mechanism 14-second pull roll unit 15-winding mechanism 16-dancer roll mechanism.
Fig. 3-5 show a digital label printer according to the present invention, which further includes a digital printing unit 10, an unreeling mechanism 13 provided with a deviation correcting unit 11 and a first pull roll unit 12 and disposed on one side of the digital printing unit 10, a reeling mechanism 15 provided with a second pull roll unit 14 and disposed on the other side of the digital printing unit 10, and two floating roll mechanisms 16 disposed on the unreeling mechanism 13 and the reeling mechanism 14 respectively. The digital printer 10, the unreeling mechanism 13 with the deviation correcting unit 11 and the first traction roller unit 12 and the reeling mechanism 15 with the second traction roller unit 14 used in the digital label printer are all devices in the prior art, so that excessive redundant description is not needed, and a reeling and unreeling position is controlled to rotate by adopting a servo motor when the digital label printer is used, so that the paper reeling diameter is monitored in real time, and stable reeling and unreeling tension is provided; the unreeling end automatically rectifies, ensures that the position of paper entering the digital printer 10 is stable, the two traction roller units are controlled by a servo motor, the motor rotating speed is monitored in real time, the tension of the paper in operation is stable, the tension of the paper in the digital printer 10 is further accurately controlled through the two floating roller mechanisms 16, the position of the floating roller 8 is read through the displacement sensor 6, the speed matching of the digital printer 10 is adapted, the paper is printed under the conditions that the tension of the paper is stable and the speed of the paper is constant, the stability of printing quality is ensured, the upgrade from the printing of the single paper to the printing of the web is also realized, the production efficiency is improved, and the unit cost is reduced.
Fig. 1-2 show a dancer mechanism 16, the dancer mechanism 16 comprises a mounting flange 3 fixedly installed on a wallboard 1 and penetrating through the wallboard 1 and provided with a connecting shaft 2, a first lever 4 arranged on the outer side of the wallboard 1 and fixedly connected with one end of the connecting shaft 2 of the mounting flange 3, a counterweight 5 arranged at one end of the first lever 4 and used for balancing, a displacement sensor 6 movably arranged on the outer side of the wallboard 1 and movably connected with the other end of the first lever 4 and used for measuring displacement distance, a second lever 7 arranged on the inner side of the wallboard 1 and fixedly connected with the other end of the connecting shaft 2 of the mounting flange 3, a dancer roller 8 arranged on the other end of the second lever 7 and movably arranged on the inner side of the wallboard 1 and movably connected with the second lever 7 and used for pulling a cylinder 9 of the second lever 7.
The first lever 4 and the second lever 7 are on the same horizontal plane and are on the same horizontal plane so as to ensure uniformity; the displacement sensor 6 is a linear displacement sensor, and the displacement sensor can be used for accurately measuring the moving distance; the floating roller 8 is an adjustable eccentric floating roller, so that the selection type of the floating roller 8 is more flexible and changeable, and more equipment can be adapted; the cylinder 9 is a low-friction cylinder, and can be selected according to different requirements or the requirements of customers.
A method of installing a dancer mechanism of a digital label printer, the method comprising the steps of:
step S1: the mounting flange 3 is mounted on the wallboard 1 according to the mounting requirement, the first lever 4 and the second lever 7 are mounted on the connecting shaft 2 of the mounting flange 3, and various acting forces applied to the mounting flange are analyzed according to the stress conditions of the first lever 4 and the second lever 7, as shown in fig. 6;
step S11: the force acting on the first lever 4 is analyzed, the gravity of the counterweight 5 is respectively marked as G2, and the friction force of the displacement sensor 6 is marked as F2;
step S12: the force acting on the second lever 7 is analyzed, and is denoted as F1, the force exerted by the paper on the dancer roller 8 is twice the paper tension, the paper tension is determined according to the digital printer 10, the gravity of the dancer roller 8 itself is denoted as G1, and the force exerted by the air cylinder 9 on the second lever 7 is denoted as F3.
Step S2: the counterweight 5, the displacement sensor 6, the floating roller 8 and the air cylinder 9 are arranged on the first lever 4 and the second lever 7 according to various acting forces;
step S21: taking a connecting shaft 2 of the mounting flange 3 as a fulcrum, recording as O, wherein the G2 acting force of the counterweight 5 needs to act on the E point of the first lever 4, the E point is the mounting position of the counterweight 5, the F2 acting force of the displacement sensor 6 needs to act on the B point of the first lever 4, and the B point is the movable fixed position of the displacement sensor 6;
step S22: according to the requirement that the force F1 of the dancer roll 8 acts on the point a of the second lever 7, the point a is the installation position of the dancer roll 8, the installation position of the air cylinder 9 is determined according to the different positions of the air cylinder 9 with different cylinder diameters acting on the second lever 7, and the fixed position is denoted as D, when the output force is larger as the cylinder diameter is larger, the point D is closer to the point O, otherwise, the point D is closer to the point a, but the requirement that f1×l2=f3×l1 is satisfied, L2 is the distance from the point a to the point O, and L1 is the distance from the point D to the point a is satisfied.
Step S3: eventually, the dancer mechanism 16 is balanced to control the tension of the paper.
Step S31: in the dancer mechanism 16, G1 and G2 are balanced about point O, so that the three forces applied by the dancer 8 are F1, F2, and F3, respectively, and F2 is the friction of the displacement sensor 6 itself, and f2=0 at the time of balancing, in summary, when the dancer 8 is balanced, f1×l2=f3×l1, L2 is required to satisfy the distance from point a to point O, and L1 is required to satisfy the distance from point D to point a, therefore, when we need to control the tension F1/2 of the paper, it is known that the force F3 of the air cylinder 9 can be adjusted, and if the dancer 8 is unbalanced, the rise and fall of point a will be caused, and at this time, the point B will rise and fall as well, and at this time, the displacement sensor 6 will feed back the displacement of point B to the pull roll unit, and the dancer mechanism 16 is required to satisfy the balance force by changing the tension of the paper by adjusting the speed of the pull roll unit, thereby achieving the purpose of controlling the tension of the paper.
The double-traction-roller unit double-floating-roller mechanism is adopted to accurately control the tension of paper in the printing process, so that the paper runs more stably in a printing engine, the platform is perfectly matched with the host machine speed, the linkage is stable, the running is stable, the production speed is higher, the single-change speed is fast, the printing machine is suitable for medium and small-sized orders, plate making is not needed, plate changing and printing ink are not needed, the cost is low, the running is noise-free and pollution-free, and the printing quality is stable.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (1)
1. A method of installing a dancer mechanism of a digital label printer, the method comprising the steps of:
step S1: installing the installation flange on the wallboard according to the installation requirement, installing the first lever and the second lever on a connecting shaft of the installation flange, and analyzing various acting forces according to the stress conditions of the first lever and the second lever;
the step S1 further includes the steps of:
step S11: analyzing the forces acting on the first lever, namely the gravity of the counterweight, and recording G2 and the friction force of the displacement sensor as F2;
step S12: analyzing the force acting on the second lever, namely the force exerted by the paper on the floating roller, namely F1, wherein the value is twice the paper tension, the paper tension is determined according to the digital printer, the gravity of the floating roller is denoted as G1, and the force exerted by the air cylinder on the second lever is denoted as F3;
step S2: installing a counterweight balance block, a displacement sensor, a floating roller and an air cylinder on the first lever and the second lever according to various acting forces;
the step S2 further includes the steps of:
step S21: taking a connecting shaft of a mounting flange as a fulcrum, recording as O, wherein the G2 acting force of a counterweight balance block needs to act on the E point of a first lever, the E point is the mounting position of the counterweight balance block, the F2 acting force of a displacement sensor needs to act on the B point of the first lever, and the B point is the movable fixed position of the displacement sensor;
step S22: according to the requirement that the F1 acting force of the floating roller acts on the point A of the second lever, the point A is the installation position of the floating roller, the installation position of the air cylinder is determined according to the different positions of the air cylinders with different cylinder diameters acting on the second lever, the fixed position is recorded as D, when the output force is larger as the cylinder diameter is larger, the point D is closer to the point O, otherwise, the point D is closer to the point A, but the requirement that F1 xL2=F3 xL1 is satisfied, L2 is the distance from the point A to the point O, and L1 is the distance from the point D to the point A;
step S3: finally, the floating roller mechanism is balanced so as to control the tension of the paper;
the step S3 further includes the steps of:
step S31: in the dancer mechanism, G1 and G2 are balanced about O point, so that the three forces applied by the dancer are F1, F2 and F3 respectively, and F2 is the friction of the displacement sensor itself, f2=0 during balancing, when the dancer is balanced, f1×l2=f3×l1 is required to be satisfied, L2 is the distance from point a to point O, and L1 is the distance from point D to point a, therefore, when we need to control the tension F1/2 of the paper, the force F3 of the cylinder can be adjusted, if the dancer is unbalanced, the rise and fall of point a will be caused, at this time, point B will rise and fall accordingly, at this time, the displacement sensor will feed back the displacement of point B to the pull roller unit, and the tension of the dancer mechanism will be adjusted to the balance force by adjusting the speed of the pull roller unit, thereby achieving the purpose of controlling the tension of the paper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010518561.6A CN111572212B (en) | 2020-06-09 | 2020-06-09 | Floating roller mechanism, digital label printer and installation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010518561.6A CN111572212B (en) | 2020-06-09 | 2020-06-09 | Floating roller mechanism, digital label printer and installation method |
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| Publication Number | Publication Date |
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| CN111572212A CN111572212A (en) | 2020-08-25 |
| CN111572212B true CN111572212B (en) | 2023-10-13 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2022104788A1 (en) * | 2020-11-23 | 2022-05-27 | 深圳市博泰数码智能技术有限公司 | Automatic die-cutting device |
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