CN218491078U - Winding and unwinding device and digital paper printing machine - Google Patents
Winding and unwinding device and digital paper printing machine Download PDFInfo
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- CN218491078U CN218491078U CN202222024125.0U CN202222024125U CN218491078U CN 218491078 U CN218491078 U CN 218491078U CN 202222024125 U CN202222024125 U CN 202222024125U CN 218491078 U CN218491078 U CN 218491078U
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Abstract
The embodiment of the application relates to the technical field of printing equipment, and provides a winding and unwinding device and a digital paper printing machine, wherein the winding and unwinding device comprises an unwinding assembly, a winding assembly, a first sensing element and a controller, the unwinding assembly comprises an unwinding shaft for winding paper and a first driving element connected to the unwinding shaft; the first sensor is used for detecting the radius of the paper wound by the unwinding shaft; the controller is electrically connected to the first sensing element and the first driving element; the utility model provides a receive and release coiling mechanism utilizes first sensor real-time measurement to unreel the epaxial radius of the paper of rolling up of axle, and the data that first sensor was measured pass through signal transmission and give the controller, and the controller can control first driving piece and drive and unreel the real-time adjustment rotational speed of axle to transmission speed when making the paper unreel tends to steadily.
Description
Technical Field
The application relates to the technical field of printing equipment, and particularly provides a winding and unwinding device and a digital paper printing machine.
Background
In the textile printing industry, the existing paper beating machine is usually a small machine, the small machine is generally used for unreeling small rolls, and the small machine is short in stepping length and low in paper feeding speed; in mass production, due to the low output of the small-sized machine, the roll changing work is not very frequent during unreeling, so that the low-volume production requirement can be met.
However, the industry today is increasingly moving towards high-volume production modes, and therefore requires large machines that are moving towards industrial forms. The existing small-sized machine has short step length, small diameter of unreeled roll paper and low paper feeding speed, and cannot meet the high requirements of industrial equipment on step precision, printing speed, step length, unreeling diameter and tidy type of reeling; and because the unwinding diameter of the small-sized machine is small (generally about 300 mm), the influence of the diameter of the roll paper on the unwinding speed can be ignored, the unwinding diameter of the industrial-grade equipment is large (generally more than 1000 mm), and the influence of the diameter of the roll paper on the unwinding speed is large, so that the winding and unwinding device used by the small-sized machine cannot meet the requirements of the industrial-grade equipment.
SUMMERY OF THE UTILITY MODEL
The purpose of this application embodiment is to provide a receive and release coiling mechanism and digital paper machine of beating, can adjust the unwinding speed of unreeling the axle according to the radius of unreeling the epaxial coiling paper of unreeling to the guarantee paper unreels steadily.
In order to achieve the above purpose, the embodiment of the present application adopts the following technical solutions:
in a first aspect, an embodiment of the present application provides a winding and unwinding device, which is applied to a digital paper machine, and the winding and unwinding device includes an unwinding assembly, a winding assembly, a first sensing element and a controller, where the unwinding assembly includes an unwinding shaft for winding paper and a first driving element connected to the unwinding shaft; the first sensor is used for detecting the radius of the paper wound by the unwinding shaft; the controller is electrically connected to the first sensing element and the first driving element.
The beneficial effects of the embodiment of the application are as follows: the utility model provides a receive and release coiling mechanism utilizes first sensing piece real-time measurement to unreel the epaxial radius of the paper of winding of rolling up, and the data that first sensing piece was measured passes through electric signal transmission and gives the controller, and the controller can control first driving piece and come the drive to unreel the real-time adjustment rotational speed of axle to transmission speed when making the paper unreel tends to steadily.
In one embodiment, the winding and unwinding device further comprises:
the printing device main body is arranged between the unwinding component and the winding component;
the traction mechanism is arranged on the peripheral side of the printing equipment main body and is used for intermittently drawing the paper;
the unwinding tension adjusting assembly is arranged between the printing equipment main body and the unwinding shaft and is used for adjusting the tension of the paper;
and the winding tension adjusting assembly is arranged between the printing equipment main body and the winding assembly and is used for adjusting the tension of the paper.
In one embodiment, the drawing mechanism includes a first drawing shaft disposed at the feeding end of the printing apparatus body, a second drawing shaft disposed at the discharging end of the printing apparatus body, and a second driving member connected to the first drawing shaft and the second drawing shaft, the second driving member electrically connected to the printing apparatus body, and the printing apparatus body electrically connected to the controller.
In one embodiment, the unwinding tension adjusting assembly comprises an unwinding rotating rod, an unwinding swing arm and an unwinding swing rod, the unwinding swing rod is connected to the unwinding rotating rod through the unwinding swing arm, the unwinding swing rod abuts against the paper and is used for tensioning the paper, and the unwinding swing rod can rotate around the unwinding rotating rod;
the winding tension adjusting assembly comprises a winding swing rod, a winding swing arm and a winding rotating rod, the winding swing rod is connected to the winding rotating rod through the winding swing arm, the winding swing rod is abutted to paper and used for tightening the paper, and the winding swing rod can rotate around the winding rotating rod.
In one embodiment, the winding tension adjusting assembly further comprises a tension adjusting part, a plurality of connecting parts are arranged on the winding swing arm, the connecting parts are distributed on the winding swing arm along the radial direction of rotation of the winding swing rod, and the tension adjusting part is connected to any one of the connecting parts and used for applying acting force for overcoming gravity to the winding swing arm.
In one embodiment, the unwinding tension adjusting assembly further comprises a second sensing element, and the second sensing element is arranged on the unwinding rotating rod and is used for detecting the rotation angle of the unwinding rotating rod; the second sensing part is electrically connected to the controller.
In one embodiment, the rotational speed V of the unreeling shaft 1 Is composed of
Wherein M is the rotation speed of the traction shaft, P is the radius of the paper wound on the unwinding shaft measured by the first sensor, and Y 1 And K is an adjusting coefficient, and is the rotation angle of the unreeling swing rod measured by the second sensing part.
In one embodiment, the winding tension adjusting assembly further comprises a third sensing element, and the third sensing element is arranged on the winding rotating rod and is used for detecting the rotation angle of the winding rotating rod; the third sensing part is electrically connected to the controller.
In one embodiment, the winding assembly comprises a winding shaft and a second driving member connected to the winding shaft, wherein the second driving member is electrically connected to the controller; rotating speed V of winding shaft 2 Is composed of
Wherein M is the rotation speed of the traction shaft, P is the radius of the paper wound on the unwinding shaft measured by the first sensor, and Y 2 And K is an adjusting coefficient, wherein the rotating angle of the unreeling swing rod is measured by the third sensing part.
In a second aspect, an embodiment of the present application further provides a digital paper printing machine, including the above winding and unwinding device.
The beneficial effects of the embodiment of the application are as follows: the digital paper printer provided by the embodiment of the application comprises the winding and unwinding device, and the winding and unwinding device can adjust the rotating speed of the unwinding shaft driven by the first driving piece according to the data measured by the first sensing piece so that the transmission speed of the paper during unwinding tends to be stable, and the printing effect of the digital paper printer and the winding and unwinding effect of the paper are better.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic view of a working flow of a winding and unwinding device according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of an unwinding tension adjusting assembly and a winding tension adjusting assembly provided in an embodiment of the present application;
fig. 3 is a cross-sectional view of an unwinding tension adjusting assembly and a winding tension adjusting assembly provided in an embodiment of the present application.
Wherein, in the figures, the respective reference numerals:
100. a coiling and uncoiling device; 200. paper; 10. an unwinding assembly; 11. unwinding the reel; 20. a winding component; 21. a winding shaft; 30. a first sensing member; 40. a printing apparatus main body; 50. a traction mechanism; 51. a first traction shaft; 52. a second traction shaft; 60. an unwinding tension adjusting assembly; 61. unwinding a rotary rod; 62. unwinding swing arms; 63. unreeling a swing rod; 64. a second sensing member; 70. a winding tension adjusting assembly; 71. winding a rotating rod; 72. winding and swinging arms; 721. a connecting member; 73. rolling a swing rod; 74. a tension adjusting member; 75. a third sensing element.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application.
In the description of the present application, it is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings, which is for convenience and simplicity of description, and does not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, is not to be considered as limiting.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In the textile printing industry, the existing paper beating machine is usually a small machine, the small machine is generally used for unreeling small rolls, and the small machine is short in stepping length and low in paper feeding speed; in the batch production, because the output of the small-sized machine is low, the roll changing work is not very frequent during the unreeling process, so that the low-volume production requirement can be met. However, the industry today is increasingly moving towards high-volume production modes, and therefore requires large machines that are moving towards industrial forms. The existing small-sized machine has short step length, small diameter of unreeled roll paper and low paper feeding speed, and cannot meet the high requirements of industrial equipment on step precision, printing speed, step length, unreeling diameter and tidy type of reeling; and because the unwinding diameter of the small-sized machine is small (generally about 300 mm), the influence of the diameter of the roll paper on the unwinding speed can be ignored, the unwinding diameter of the industrial-grade equipment is large (generally more than 1000 mm), and the influence of the diameter of the roll paper on the unwinding speed is large, so that the winding and unwinding device used by the small-sized machine cannot meet the requirements of the industrial-grade equipment.
From this, this application embodiment provides a receive and release coiling mechanism and digital paper machine of beating, can adjust the unwinding speed of unreeling the axle according to the radius of unreeling the epaxial coiling paper of unreeling to the guarantee paper unreels steadily.
Referring to fig. 1 to fig. 3, in a first aspect, an unwinding and winding apparatus 100 is provided in an embodiment of the present application, and is applied to a digital paper machine, the unwinding and winding apparatus 100 includes an unwinding assembly 10, a winding assembly 20, a first sensing element 30 and a controller (not shown in the drawings), the unwinding assembly 10 includes an unwinding shaft 11 for winding paper 200, and a first driving element (not shown in the drawings) connected to the unwinding shaft 11; the first sensor 30 is used for detecting the radius of the paper 200 wound by the unwinding shaft 11; the controller is electrically connected to the first sensor 30 and the first driving member.
As can be understood, the paper 200 is wound on the unwinding shaft 11, so that the unwinding assembly 10 continues to perform the unwinding operation on the paper 200; the paper 200 is unreeled from the unreeling shaft 11 and then printed, and is reeled by the reeling assembly 20 to complete the paper-feeding operation.
In the actual operation process, the diameter of the roll paper formed by winding the paper 200 on the unwinding shaft 11 generally exceeds 1000mm, and the unwinding speed of the paper 200 unwound from the roll paper is related to the diameter of the roll paper in the process of driving the unwinding shaft 11 to rotate by the first driving member, that is, the larger the diameter of the roll paper is, the faster the roll paper unwinds the paper 200. Therefore, by arranging the first sensing member 30, the radius of the roll paper is measured in real time by using the first sensing member 30, and the first sensing member 30 sends the measured data to the controller, so that the controller controls the rotating speed of the first driving member for driving the unreeling shaft 11 according to the current roll paper radius, and the speed of the unreeling shaft 11 for unreeling the paper 200 tends to be stable.
Specifically, in the unwinding process, the roll paper radius on the unwinding shaft 11 is gradually reduced along with the unwinding, so that the controller controls the rotation speed of the first driving member to drive the unwinding shaft 11 to be gradually increased along with the unwinding, so as to offset the influence of the reduction of the speed of the unwinding paper 200 caused by the reduction of the roll paper radius.
The first sensor 30 may be a distance sensor, an infrared sensor, or the like, and measures the radius of the roll paper on the unwinding shaft 11 in the radial direction of the unwinding shaft 11. The first driving member may be a stepping motor, and the controller may be configured to control an output rotation speed of the stepping motor. The aforementioned controller may employ a PID controller (proportional-integral-derivative) for implementing the adjustment of the rotational speed of the first drive member based on the measured data.
The winding and unwinding device 100 provided in the embodiment of the present application utilizes the first sensing element 30 to measure the radius of the paper 200 wound on the unwinding shaft 11 in real time, the data measured by the first sensing element 30 is transmitted to the controller through an electric signal, and the controller can control the first driving element to drive the unwinding shaft 11 to adjust the rotating speed in real time, so that the transmission speed of the paper 200 during unwinding tends to be stable.
Referring to fig. 1 to fig. 3, in an embodiment, the winding and unwinding device 100 further includes a printing apparatus main body 40, a pulling mechanism 50, an unwinding tension adjusting assembly 60, and a winding tension adjusting assembly 70, the printing apparatus main body 40 is disposed between the unwinding assembly 10 and the winding assembly 20, the pulling mechanism 50 is disposed on a peripheral side of the printing apparatus main body 40, and the pulling mechanism 50 is configured to intermittently pull the paper 200. The traction mechanism 50 draws the paper 200 to the printing device main body 40, the printing operation is carried out on the paper 200 through the printing device main body 40, and after the printing operation is finished, the traction mechanism 50 draws the paper 200 forwards, so that the part of the paper 200 which is printed is moved forwards, and the subsequent part of the paper 200 which is not printed is moved to the printing device main body 40 to be printed continuously; the drawing mechanism 50 intermittently draws the paper 200 so that the paper 200 can intermittently complete printing on the printing apparatus main body 40.
The unwinding tension adjusting assembly 60 is disposed between the printing apparatus main body 40 and the unwinding shaft 11 and is used for adjusting the tension of the paper 200, and the winding tension adjusting assembly 70 is disposed between the printing apparatus main body 40 and the winding assembly 20 and is used for adjusting the tension of the paper 200. It can be understood that, since the first driving member drives the unwinding shaft 11 to rotate continuously, that is, the unwinding shaft 11 continuously performs the operation of unwinding the paper 200, and the pulling mechanism 50 intermittently pulls the paper 200, by providing the unwinding tension adjusting assembly 60 between the printing apparatus main body 40 and the unwinding shaft 11, the unwinding tension adjusting assembly 60 is utilized to apply pressure to the paper 200 to keep it in a tight state, so as to avoid the paper 200 being unwound from a stop and causing uneven tension, and to enable the unwinding shaft 11 to rotate continuously to perform the unwinding operation, so as to protect the mechanical transmission of the unwinding shaft 11, and to reduce the impact that the paper 200 is intermittently removed from the apparatus main body by the pulling mechanism 50 after printing on the printing apparatus main body 40 is completed, so as to avoid the paper 200 being unwound from a stop and causing uneven tension. Similarly, a take-up tension adjusting unit 70 is provided between the printing apparatus main body 40 and the take-up unit 20, and the paper 200 is pressed by the take-up tension adjusting unit 70 to be kept in a taut state.
Referring to fig. 1 to 3, in an embodiment, the drawing mechanism 50 includes a first drawing shaft 51, a second drawing shaft 52 and a second driving member (not shown), the first drawing shaft 51 is disposed at the feeding end of the printing apparatus main body 40, the second drawing shaft 52 is disposed at the discharging end of the printing apparatus main body 40, the second driving member is connected to the first drawing shaft 51 and the second drawing shaft 52, the second driving member is electrically connected to the printing apparatus main body 40, and the printing apparatus main body 40 is electrically connected to the controller. The printing apparatus main body 40 is configured to control the second driving unit so that the second driving unit drives the first drawing shaft 51 and the second drawing shaft 52 to draw the conveyance paper 200 for printing. The second driving element may adopt a stepping motor, and the stepping motor is used to drive the first traction shaft 51 and the second traction shaft 52 to rotate; the second driving member is provided by the printing apparatus main body 40 so that the second driving member controls the pull conveyance of the paper 200 in accordance with the printing progress of the printing apparatus main body 40.
Referring to fig. 1 to 3, in an embodiment, the unwinding tension adjusting assembly 60 includes an unwinding rotating rod 61, an unwinding swing arm 62 and an unwinding swing rod 63, the unwinding swing rod 63 is connected to the unwinding rotating rod 61 through the unwinding swing arm 62, the unwinding swing rod 63 abuts against the paper 200 and is used for tightening the paper 200, and the unwinding swing rod 63 can rotate around the unwinding rotating rod 61. As can be appreciated, the unwinding swing lever 63 abuts against and presses the sheet 200 according to its own weight, so that the sheet 200 is kept taut.
The unwinding shaft 11 is kept rotated by the driving of the first driving member to continuously perform the unwinding operation of the roll paper wound on the unwinding shaft 11, and the drawing mechanism 50 performs the intermittent drawing operation of the paper 200. When the traction mechanism 50 is in a stopped state, paper between the first traction shaft 51 and the unreeling shaft 11 will increase and accumulate, and at this time, the unreeling oscillating bar 63 will rotate downwards according to its own gravity and continuously press the paper 200 to keep the paper 200 tight; when the traction mechanism 50 is in a traction state, the paper between the first traction shaft 51 and the unreeling shaft 11 will be reduced, at this time, the unreeling oscillating bar 63 is pressed against the paper 200 according to the self gravity, and the hanging degree of the paper 200 will also be reduced in the reducing process, that is, the unreeling oscillating bar 63 is lifted upwards by the paper 200. In summary, during the whole process of intermittently pulling the paper 200 by the pulling mechanism 50, the unwinding swing rod 63 will alternately rotate up and down to apply a force to the paper 200 in real time to keep the paper 200 taut.
The winding tension adjusting assembly 70 comprises a winding swing rod 73, a winding swing arm 72 and a winding rotary rod 71, the winding swing rod 73 is connected to the winding rotary rod 71 through the winding swing arm 72, the winding swing rod 73 abuts against the paper 200 and is used for tightening the paper 200, and the winding swing rod 73 can rotate around the winding rotary rod 71. As can be understood, the winding oscillating bar 73 abuts and presses against the sheet 200 according to its own weight, so that the sheet 200 is kept taut.
The winding assembly 20 continuously performs the winding operation on the paper 200, and the drawing mechanism 50 intermittently draws the paper 200.
When the traction mechanism 50 is in a traction state, the second traction shaft 52 sends the printed paper 200 out of the printing main body device and transmits the printed paper towards the winding assembly 20, the paper between the second traction shaft 52 and the winding assembly 20 is increased and accumulated, and at the moment, the winding oscillating bar 73 rotates downwards according to the gravity of the winding oscillating bar and continuously presses the paper 200 to keep the paper 200 tight; when the traction mechanism 50 is in a stop state, since the winding assembly 20 still keeps winding operation, the paper quality between the second traction shaft 52 and the winding shaft will decrease, at this time, the winding oscillating bar 73 is pressed against the paper 200 according to the self gravity, and the hanging degree of the paper 200 will also decrease in the process of decreasing, that is, the paper 200 lifts the winding oscillating bar 73 upwards. In summary, the winding swing link 73 will rotate up and down alternately during the whole process of intermittently pulling the paper 200 by the pulling mechanism 50, so as to apply a force to the paper 200 in real time to keep the paper 200 tight.
Referring to fig. 1 to fig. 3, in an embodiment, the winding tension adjusting assembly 70 further includes a tension adjusting member 74, a plurality of connecting members 721 are disposed on the winding swing arm 72, the connecting members 721 are distributed on the winding swing arm 72 along a radial direction of rotation of the winding swing rod 73, and the tension adjusting member 74 is connected to any one of the connecting members 721 and is configured to apply an acting force against gravity to the winding swing arm 72. It is understood that when the printing apparatus main body 40 prints on the paper 200, the paper 200 expands after being printed with ink; through set up tension adjusting part 74 on rolling swing arm 72 to make tension adjusting part 74 exert the effort to rolling swing arm 72 in order to support rolling swing arm 72 and rolling pendulum rod 73, and then offset the partial gravity of rolling swing arm 72 and rolling pendulum rod 73, rolling swing arm 72 also correspondingly reduces to the effort of the paper after the printing, in order to satisfy the tight atress requirement of the paper after the printing. The tension adjusting element 74 can be adjusted to be connected to different connecting elements 721, so that the force arm of the tension adjusting element 74 can be changed, and the supporting force of the tension adjusting element 74 on the winding swing arm 72 can be further changed. Specifically, the connecting member 721 in this embodiment is a connecting hole opened on the winding swing arm 72, and the tension adjusting member 74 may be a cylinder, a main body portion of the cylinder is fixedly disposed, and a piston portion of the cylinder is connected to any one of the connecting holes.
Referring to fig. 1 to fig. 3, in an embodiment, the unwinding tension adjusting assembly 60 further includes a second sensing element 64, and the second sensing element 64 is disposed on the unwinding rotating rod 61 and is used for detecting a rotation angle of the unwinding rotating rod 63; the second sensing element 64 is electrically connected to the controller. Because the unreeling swing rod 63 is used for abutting against the unreeled paper 200, when the traction mechanism 50 is in a suspended traction state, the paper 200 can be stacked between the first traction shaft 51 and the unreeling shaft 11, and the unreeling swing rod 63 abuts against the paper 200 according to gravity and continuously rotates downwards; when the traction mechanism 50 is in a traction state, the paper quality between the first traction shaft 51 and the unreeling shaft 11 is reduced, so that the hanging degree of the paper 200 is smaller and smaller, that is, the paper quality jacks up the unreeling oscillating bar 63, so that the unreeling oscillating bar 63 rotates upward.
The second sensing part 64 can detect the rotation angle of the unreeling swing rod 63, and further judge the accumulation degree of the paper 200 between the first traction shaft 51 and the unreeling shaft 11; when the second sensing part 64 detects that the downward rotation angle of the unreeling swing rod 63 is too large, that is, too much paper 200 is accumulated between the first traction shaft 51 and the unreeling shaft 11, the controller can control the first driving part to reduce the rotation speed, so that the unreeling speed of the unreeling shaft 11 is reduced; when the second sensing part 64 detects that the upward rotation angle of the unwinding swing rod 63 is too large, that is, the storage amount of the paper 200 between the first traction shaft 51 and the unwinding shaft 11 is too small, in order to avoid the problem of paper breaking, the controller can control the first driving part to increase the rotation speed, so that the unwinding speed of the unwinding shaft 11 is increased. Meanwhile, whether the paper breaking occurs can be judged by measuring the rotation angle of the unreeling swing rod 63 by using the second sensing part 64. Specifically, the second sensing member 64 may be an angle sensor.
Referring to fig. 1 to 3, in one embodiment, the rotation speed V of the unreeling shaft 11 1 Is composed of
Where M is the rotation speed of the drawing shaft, P is the radius of the paper 200 wound on the unwinding shaft 11 measured by the first sensor 30, and Y is 1 The rotation angle of the unwinding swing rod 63 measured by the second sensing part 64 is K, which is an adjustment coefficient.
The first driving piece is controlled by the controller to drive the unreeling shaft 11 to rotate at V 1 Wherein, the controller unreels according to the rotating speed M of the traction shaft, the radius P of the paper 200 wound on the unreeling shaft 11 and the rotating angle Y of the unreeling oscillating bar 63 1 To make the adjustment. Specifically, K is an adjustment coefficient for adjusting the overall speed of the unreeling shaft 11; k may be greater than 1 or less than 1, for example, when it is desired to rotate the unwinding shaft 11 at a speed V 1 When the time is released, a number of K less than 1 can be input for adjustment; conversely, a book with K greater than 1 can be fed to increase the rotational speed V of the unwinding shaft 11 1 。
Referring to fig. 1 to fig. 3, in an embodiment, the winding tension adjusting assembly 70 further includes a third sensing element 75, and the third sensing element 75 is disposed on the winding rotating rod 71 and is used for detecting a rotation angle of the winding rotating rod 73; the third sensing element 75 is electrically connected to the controller. Because the rolling oscillating bar 73 is used for abutting against the printed paper 200, when the traction mechanism 50 is in a traction state, the paper 200 can be stacked between the second traction shaft 52 and the rolling component 20, and the rolling oscillating bar 73 abuts against the paper 200 according to gravity and continuously rotates downwards; when the pulling mechanism 50 is in the state of suspending pulling, since the winding assembly 20 continues to perform the winding operation, the amount of the paper 200 between the second pulling shaft 52 and the winding assembly 20 is reduced, so that the hanging degree of the paper 200 is smaller and smaller, that is, the paper pushes up the unwinding swing rod 63, so that the unwinding swing rod 63 rotates upward.
The third sensing part 75 can detect the rotation angle of the winding swing rod 73, so as to judge the stacking degree of the paper 200 between the second traction shaft 52 and the winding assembly 20; when the third sensing part 75 detects that the downward rotation angle of the winding oscillating bar 73 is too large, that is, too much paper 200 is stacked between the second traction shaft 52 and the winding assembly 20, the controller can control the winding speed of the winding assembly 20 to be increased; when the third sensing part 75 detects that the upward rotation angle of the winding oscillating bar 73 is too large, that is, the amount of the paper 200 stored between the second traction shaft 52 and the winding assembly 20 is too small, in order to avoid the paper breaking problem, the controller can control the winding speed of the winding assembly 20 to be slowed down. Meanwhile, whether the paper breaking occurs can be judged by measuring the rotation angle of the rolling swing rod 73 by using the third sensing part 75. Specifically, the third sensing member 75 may be an angle sensor.
Referring to fig. 1 to 3, in one embodiment, the winding assembly 20 includes a winding shaft 21 and a second driving member (not shown) connected to the winding shaft 21, and the second driving member is electrically connected to the controller. The second driving piece can adopt a stepping motor; rotational speed V of take-up reel 21 2 Is composed of
Where M is the rotation speed of the drawing shaft, P is the radius of the paper 200 wound on the unwinding shaft 11 measured by the first sensor 30, and Y is 2 The rotation angle of the unwinding swing rod 63 measured by the third sensing element 75 is K, which is an adjustment coefficient.
The second driving member is controlled by the controller to drive the winding shaft 21 to be V 2 Wherein, the controller winds the paper 200 on the unwinding shaft 11 according to the rotating speed M of the traction shaft, the radius P of the wound paper 200 on the unwinding shaft and the rotating angle Y of the winding swing rod 73 2 To make the adjustment.
Referring to fig. 1 to fig. 3, in a second aspect, an embodiment of the present application further provides a digital paper printing machine, which includes the winding and unwinding device 100 as described above. The digital paper printer provided by the embodiment of the application, because including the above winding and unwinding device 100, on the basis that the winding and unwinding device 100 can adjust the rotating speed of the first driving member driving unwinding shaft 11 according to the data measured by the first sensing member 30 so that the transmission speed of the paper 200 during unwinding tends to be stable, the printing effect of the digital paper printer and the winding and unwinding effect of the paper 200 are better.
The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed.
Claims (10)
1. The utility model provides a receive unwinding device, is applied to in the digital paper machine that beats, its characterized in that, receive unwinding device includes:
the unwinding assembly comprises an unwinding shaft for winding paper and a first driving piece connected to the unwinding shaft;
a winding component;
the first sensor is used for detecting the radius of the paper wound by the unwinding shaft;
the controller is electrically connected to the first sensing piece and the first driving piece.
2. The winding and unwinding device according to claim 1, further comprising:
the printing device main body is arranged between the unreeling component and the reeling component;
the traction mechanism is arranged on the peripheral side of the printing device main body and is used for intermittently drawing paper;
the unwinding tension adjusting assembly is arranged between the printing equipment main body and the unwinding shaft and is used for adjusting the tension of paper;
rolling tension adjusting part, rolling tension adjusting part set up in the printing apparatus main part with between the rolling subassembly, and be used for adjusting the tension of paper.
3. The winding and unwinding device of claim 2, wherein: the traction mechanism comprises a first traction shaft, a second traction shaft and a second driving piece, the first traction shaft is arranged at the feeding end of the printing equipment main body, the second traction shaft is arranged at the discharging end of the printing equipment main body, the second driving piece is connected with the first traction shaft and the second traction shaft, the second driving piece is electrically connected with the printing equipment main body, and the printing equipment main body is electrically connected with the controller.
4. A wind-up and wind-down apparatus according to claim 3, wherein: the unreeling tension adjusting assembly comprises an unreeling rotating rod, an unreeling swing arm and an unreeling swing rod, the unreeling swing rod is connected to the unreeling rotating rod through the unreeling swing arm, the unreeling swing rod abuts against paper and is used for tightening the paper, and the unreeling swing rod can rotate around the unreeling rotating rod;
the winding tension adjusting assembly comprises a winding swing rod, a winding swing arm and a winding rotating rod, the winding swing rod passes through the winding swing arm and is connected to the winding rotating rod, the winding swing rod is abutted to paper and used for tightening the paper, and the winding swing rod can wind the winding rotating rod to rotate.
5. The winding and unwinding device according to claim 4, wherein: rolling tension adjusting part still includes tension adjusting part, be provided with a plurality of connecting pieces on the rolling swing arm, it is a plurality of the connecting piece is followed rolling swing rod pivoted radial direction distribute in on the rolling swing arm, tension adjusting part connects in any the connecting piece just is used for right the effort that is used for overcoming gravity is applyed to the rolling swing arm.
6. The winding and unwinding device according to claim 4, wherein: the unreeling tension adjusting assembly further comprises a second sensing piece, and the second sensing piece is arranged on the unreeling rotating rod and used for detecting the rotating angle of the unreeling oscillating rod; the second sensing part is electrically connected to the controller.
7. The winding and unwinding device of claim 6, wherein: the rotating speed V of the unreeling shaft 1 Is composed of
Wherein M is the rotation speed of the traction shaft, P is the radius of the paper wound on the unwinding shaft measured by the first sensor, and Y is 1 And K is an adjusting coefficient, wherein the rotating angle of the unreeling swing rod is measured by the second sensing piece.
8. The winding and unwinding device of claim 6, wherein: the winding tension adjusting assembly further comprises a third sensing piece, and the third sensing piece is arranged on the winding rotating rod and is used for detecting the rotating angle of the winding oscillating rod; the third sensing part is electrically connected to the controller.
9. A wind-up and wind-down apparatus according to claim 8, wherein: the winding assembly comprises a winding shaft and a second driving piece connected to the winding shaft, and the second driving piece is electrically connected to the controller; rotating speed V of winding shaft 2 Is composed of
Wherein M is the rotation speed of the traction shaft, P is the radius of the paper wound on the unwinding shaft measured by the first sensor, and Y is 2 And K is an adjusting coefficient, wherein the rotating angle of the unreeling swing rod is measured by the third sensing part.
10. A digital paper machine, characterized in that it comprises a take-up and pay-off device according to any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222024125.0U CN218491078U (en) | 2022-08-02 | 2022-08-02 | Winding and unwinding device and digital paper printing machine |
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| CN202222024125.0U CN218491078U (en) | 2022-08-02 | 2022-08-02 | Winding and unwinding device and digital paper printing machine |
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