CN114348741A - Digital printing machine and digital printing method for cloth roll - Google Patents
Digital printing machine and digital printing method for cloth roll Download PDFInfo
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- CN114348741A CN114348741A CN202210192466.0A CN202210192466A CN114348741A CN 114348741 A CN114348741 A CN 114348741A CN 202210192466 A CN202210192466 A CN 202210192466A CN 114348741 A CN114348741 A CN 114348741A
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- 239000004744 fabric Substances 0.000 title claims abstract description 191
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000012544 monitoring process Methods 0.000 claims abstract description 52
- 230000007246 mechanism Effects 0.000 claims abstract description 19
- 230000009467 reduction Effects 0.000 claims description 8
- 230000001105 regulatory effect Effects 0.000 claims description 7
- 230000001276 controlling effect Effects 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims 1
- 230000002045 lasting effect Effects 0.000 claims 1
- 230000008569 process Effects 0.000 abstract description 12
- 238000004804 winding Methods 0.000 abstract description 7
- 238000003854 Surface Print Methods 0.000 abstract description 3
- 230000008859 change Effects 0.000 description 18
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000003860 storage Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
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Classifications
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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
- B65H23/06—Registering, tensioning, smoothing or guiding webs longitudinally by retarding devices, e.g. acting on web-roll spindle
- B65H23/063—Registering, tensioning, smoothing or guiding webs longitudinally by retarding devices, e.g. acting on web-roll spindle and controlling web tension
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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
- B65H16/00—Unwinding, paying-out webs
- B65H16/02—Supporting web roll
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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
- B65H16/00—Unwinding, paying-out webs
- B65H16/10—Arrangements for effecting positive rotation of web roll
- B65H16/103—Arrangements for effecting positive rotation of web roll in which power is applied to web-roll spindle
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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
- B65H26/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms
- B65H26/08—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms responsive to a predetermined diameter
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- Treatment Of Fiber Materials (AREA)
- Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
Abstract
The invention provides a digital printing machine for cloth rolls, which comprises a digital printing mechanism and an unwinding roller, wherein the unwinding roller is used for winding cloth, the digital printing mechanism is used for printing the cloth rolls, and the digital printing machine is characterized by further comprising a cloth roll monitoring part, a braking part and a braking adjusting part, the cloth roll monitoring part is used for continuously monitoring the diameter of the cloth rolls on the unwinding roller, the braking part is used for braking the unwinding roller, the cloth roll monitoring part is electrically connected with the braking adjusting part, and the braking adjusting part is used for adjusting the braking force of the braking part in real time according to signals of the cloth roll monitoring part. The digital printing machine for cloth rolls can realize the control of the cloth surface tension in the printing process under the condition of basically not changing the structure of the original digital printing equipment, and improves the consistency of the cloth surface printing quality before and after the printing process.
Description
Technical Field
The invention relates to the technical field of cloth cover printing, in particular to a digital cloth roll printing machine and a digital cloth roll printing method.
Background
The digital printing machine is mainly applied to printing and dyeing of clothing and cloth, and can quickly form a preset printing pattern on the surface of the cloth. The MS digital printing machine has the advantages of high printing speed and small equipment size, and is widely applied to the printing process of cloth covers. The existing digital printing machine generally carries cloth to be printed by an unwinding roller, and the cloth is wound on the unwinding roller and takes a shape of a roll. In the printing process, the cloth roll starts from the unwinding roller and is transmitted to a digital printing mechanism in the digital printing machine through the guide roller in an auxiliary mode, patterns to be printed are printed on the cloth surface by the digital printing mechanism, and then the cloth reaches the winding roller to be wound, so that the printing process is completed.
In the process of printing the surface of the cloth roll by using the digital printing machine, the cloth cover is tensioned by the acting force of the guide roller, but the tension of the cloth cover always changes gradually along with the production time, so that the printing quality of the cloth cover often has inconsistent earlier stage printing and later stage printing. In the traditional production process, operators need to pay attention to the change of the printing quality of the cloth roll in the production process all the time and adjust the printing quality, so that the labor is greatly consumed, and the condition that the printing quality is slightly inconsistent before and after the printing quality is inevitably influenced.
Disclosure of Invention
Therefore, in order to improve the consistency of the cloth surface printing quality before and after the printing process, a digital printing machine for cloth rolls is needed, and a digital printing device is further needed.
According to one embodiment of the invention, the digital printing machine for the cloth roll comprises a digital printing mechanism and an unwinding roller, wherein the unwinding roller is used for winding cloth, the digital printing mechanism is used for printing the cloth roll, and the digital printing machine for the cloth roll is characterized by further comprising a cloth roll monitoring piece, a braking piece and a braking adjusting piece, the cloth roll monitoring piece is used for continuously monitoring the diameter of the cloth roll on the unwinding roller, the braking piece is used for braking the unwinding roller, the cloth roll monitoring piece is electrically connected with the braking adjusting piece, and the braking adjusting piece is used for adjusting the braking force of the braking piece in real time according to a signal of the cloth roll monitoring piece.
In one embodiment, the cloth roll monitoring piece is a distance measuring sensor which is used for measuring the distance between the cloth roll monitoring piece and the cloth cover of the cloth roll.
In one embodiment, the ranging sensor is disposed laterally over the roll of cloth.
In one embodiment, the distance measuring sensor is 0.8-1.5 m away from the surface of the unwinding roller.
In one embodiment, the braking part comprises a brake disc and a brake pad, the brake disc is connected with the roll shaft of the unwinding roll, and the brake pad is used for being matched with the brake disc to brake.
In one embodiment, the brake pad is a pneumatic brake pad.
In one embodiment, the braking member further comprises a compressed air source, and the compressed air source is used for controlling the braking force between the pneumatic brake pad and the brake disc through the air pressure.
In one embodiment, the braking force adjusting part can continuously adjust the braking force of the braking part.
In one embodiment, the brake adjuster is selected from a proportional valve for reducing the air pressure of the compressed air source.
Further, the invention also provides a digital printing method for cloth rolls, which adopts the digital printing machine for cloth rolls to print the cloth rolls, and comprises the following steps:
placing the cloth roll on the unwinding roller, driving the cloth roll to start to move, and starting the digital printing mechanism to print;
the diameter of the cloth roll on the unwinding roller is monitored through the cloth roll monitoring piece, the diameter of the cloth roll is transmitted to the braking adjusting piece, and the braking adjusting piece gradually reduces the braking force of the braking piece according to the reduction of the diameter of the cloth roll.
The inventor finds that the digital printing machine is smaller in equipment size compared with the traditional large-scale printing equipment, the influence of the self weight of a cloth roll on the cloth tension is not negligible, and the cloth tension is the main reason of the change of the cloth tension in the early printing stage and the later printing stage. Further, the inventor proposes a digital printing apparatus for cloth roll in the embodiment of the invention.
Additionally set up yardage roll monitoring piece in this yardage roll digital printing equipment, stopper and braking regulating part, through the change of yardage roll monitoring piece detection yardage roll diameter, and the diameter according to the yardage roll changes the braking dynamics that changes the stopper, change the dynamics that the unreeling roller carried cloth through changing the braking dynamics, and then compensate the tension of cloth cover, make the tension of cloth cover maintain a comparatively stable scope, avoid because the big uneven problem of the stamp quality that leads to of cloth cover tension fluctuation range. The digital printing equipment for the yardage roll determines the weight change of the yardage roll skillfully by testing the diameter of the yardage roll, correspondingly adjusts the braking force of the braking part, and realizes the tension compensation of the yardage roll by braking the unwinding roller and then rotating.
Compared with the traditional digital printing equipment, the digital printing machine for cloth rolls in at least one embodiment of the invention is additionally provided with the cloth roll monitoring part, the braking part and the braking adjusting part, wherein the braking part can be directly added in the original digital printing machine and arranged on the unwinding roller without occupying an extra position, and the braking adjusting part and the cloth roll monitoring part can be arranged at a certain distance from the unwinding roller and are arranged at the upper part of a shell of the machine, so that the digital printing machine for cloth rolls can realize the control of the cloth surface tension in the printing process under the condition of basically not changing the structure of the original digital printing equipment, and the consistency of the printing quality of the cloth surface before and after the printing process is improved.
Drawings
FIG. 1 shows a specific structure of a digital cloth roll printing machine;
wherein the symbols and their meanings in the drawings are as follows:
110. unwinding rollers; 120. a yardage roll monitoring member; 130. a stopper; 131. a brake disc; 132. a vehicle-related piece; 133. compressing a gas source; 140. a brake adjuster; 200. and (6) rolling the cloth.
Detailed Description
In order that the invention may be more fully understood, reference will now be made to the following description. Preferred embodiments of the present invention are presented herein. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In addition, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or may be connected through two or more elements. It should be understood that it is a matter of course that those skilled in the art can correspondingly understand the specific meanings of the above terms according to specific situations without causing ambiguity.
Unless otherwise defined, in the description of the present invention, terms indicating orientation or positional relationship such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are based on the orientation or positional relationship shown in the drawings of the present invention, which are only for convenience and simplicity in describing the contents of the invention and for the reader's understanding in conjunction with the drawings, and do not define or imply that the device or element referred to must have a specific orientation and therefore should not be construed as limiting the present invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
According to one embodiment of the invention, the digital printing machine for the cloth roll comprises a digital printing mechanism and an unwinding roller, wherein the unwinding roller is used for winding the cloth, and the digital printing mechanism is used for printing the cloth roll. Further, the yardage roll digital printing machine also comprises a yardage roll monitoring part, a braking part and a braking adjusting part, wherein the yardage roll monitoring part is used for continuously monitoring the diameter of the yardage roll on the unwinding roller, the braking part is used for braking the unwinding roller, the yardage roll monitoring part is electrically connected with the braking adjusting part, and the braking adjusting part is used for adjusting the braking force of the braking part in real time according to the signal of the yardage roll monitoring part.
The inventor finds that the digital printing machine is smaller in equipment size compared with the traditional large-scale printing equipment, the influence of the self weight of a cloth roll on the cloth tension is not negligible, and the cloth tension is the main reason of the change of the cloth tension in the early printing stage and the later printing stage. Further, the inventor proposes a digital printing apparatus for cloth roll in the embodiment of the invention.
Additionally set up yardage roll monitoring piece in this yardage roll digital printing equipment, stopper and braking regulating part, through the change of yardage roll monitoring piece detection yardage roll diameter, and the diameter according to the yardage roll changes the braking dynamics that changes the stopper, change the dynamics that the unreeling roller carried cloth through changing the braking dynamics, and then compensate the tension of cloth cover, make the tension of cloth cover maintain a comparatively stable scope, avoid because the big uneven problem of the stamp quality that leads to of cloth cover tension fluctuation range. The digital printing equipment for the yardage roll determines the weight change of the yardage roll skillfully by testing the diameter of the yardage roll, correspondingly adjusts the braking force of the braking part, and realizes the tension compensation of the yardage roll by braking the unwinding roller and then rotating.
The digital printing mechanism in the digital printing machine for the cloth roll is mainly used for printing on the surface of the cloth roll, and can be understood that the digital printing mechanism is mainly used for printing on the cloth surface in an air-brushing mode. The main structure of the digital printing mechanism is similar to the components with corresponding functions in the digital printing machine in the prior art, and the details are not repeated here.
In one specific example, the digital printing machine for cloth rolls can further comprise one or more cloth guide rollers, wherein the cloth guide rollers are mainly used for supporting the cloth rolls from the unwinding roller and changing or guiding the traveling direction of the cloth rolls. Further, the digital printing machine for the cloth roll is also provided with a winding roller, and the cloth roll reaches the winding roller after being subjected to digital printing processing and is stored on the winding roller.
In view of the limited space in digital printing machines and the need to continue the unwinding of the cloth from the unwinding roller during operation. In order to ensure that the structure of the main body of the digital printing machine and the cloth discharging condition of the cloth roll are not changed basically, in one specific example, the cloth roll monitoring piece can be a distance measuring sensor which is used for monitoring the distance between the distance measuring sensor and the cloth roll. It can be understood that the position of the distance measuring sensor is fixed, and the smaller the diameter of the cloth roll is, the larger the distance between the cloth roll and the sensor is under the condition that the position of the distance measuring sensor is not changed. The distance measuring sensor may be spaced from the cloth roll and the distance between the distance measuring sensor and the cloth roll is measured without contacting the cloth roll or the unwinding roller.
In particular, the ranging sensor may be selected from laser ranging sensors. The laser ranging sensor firstly uses a laser diode to aim at a target to emit laser pulses, the laser is scattered in all directions after being reflected by the target, part of scattered light returned to a sensor receiver is received by an optical system, the time from the emission of the laser pulses to the return reception can be recorded and processed, and the target distance can be measured. The laser distance measuring sensor is suitable for the digital printing machine of the cloth roll, can measure the diameter change of the cloth roll more accurately under the condition of not influencing the cloth roll or the unwinding roller basically,
further, in one specific example, the distance measuring sensor is disposed above the side of the cloth roll, for example, on a housing above the side of the cloth roll in the digital printing machine for cloth rolls. The distance between the digital printing machine and the surface of the cloth roll can be measured by the arrangement, and the original digital printing equipment does not need to be modified. It can be understood that the distance measuring direction of the distance measuring sensor does not necessarily need to be perpendicular to the surface of the cloth roll, and the distance measuring sensor can irradiate the surface of the cloth roll from an inclined direction, and only the relation between the measured distance and the diameter of the cloth roll needs to be preset.
In one specific example, in order to improve the consistency of the cloth surface printing quality before and after the printing process, the distance between the distance measuring sensor and the roller surface of the unwinding roller can be set to be 0.8-1.5 m. The distance between the distance measuring sensor and the roll surface of the unwinding roll is within the range, so that the distance measuring precision of the distance measuring laser distance measuring sensor to the distance is improved, the change degree of the diameter of the cloth roll is conveniently and accurately measured, and the regulation and control precision of the braking adjusting piece is improved. If the distance measuring sensor is arranged closer or farther, the distance change precision measured by the distance measuring sensor is not high, and accordingly the regulation and control precision of the braking part by the braking regulating part is also reduced.
In one specific example, the braking part can be provided and comprises a brake disc and a brake block, the brake disc is connected with the roll shaft of the unwinding roll, and the brake block is used for being matched with the brake disc to brake. Specifically, the brake pad can generate friction force through contact with the brake disc, the friction force becomes braking force to the brake disc, and further, the unwinding roller connected with the brake disc is also acted by the braking force, and the rotating speed is slowed down. The brake pad and the brake disc are used for braking, and the brake processing of the unwinding roller can be realized under the condition that the main body framework of the original digital printing equipment is not changed.
In one specific example, the brake pad is a pneumatic brake pad, and the braking member further comprises a compressed air source, wherein the compressed air source is used for controlling the braking force between the pneumatic brake pad and the brake disc through the air pressure. It can be understood that the compressed air source can be an air storage container containing compressed air, the air storage container is connected with the pneumatic brake pad through an air duct, and the compressed air in the air storage container applies pressure to the pneumatic brake pad through the air duct, so that friction force is generated between the pneumatic brake pad and the brake disc. The pressure between the pneumatic brake pad and the brake disc can be controlled by controlling the size of the compressed gas in the gas storage container, so that the braking force of the brake disc on the unwinding roller is controlled.
In one specific example, the brake adjuster can continuously adjust the braking force of the braking member. The braking force of the braking member is continuously adjusted, namely, the braking force of the braking member can be continuously changed through the adjustment of the braking adjusting member. Along with the gradual reduction of yardage roll diameter on the unwinding roller, can set up the braking dynamics also continuous variation to the unwinding roller, consequently can control the tension of cloth cover more accurately, further improve the stability of cloth cover stamp effect.
In one specific example, corresponding to the case that the braking member comprises a pneumatic brake pad and a compressed air source, the braking adjusting member may be an air valve for adjusting the air pressure in the compressed air source, so as to adjust the braking force of the braking member. Further, the gas valve can be a proportional valve, on the basis of a common valve, a proportional electromagnet is used for replacing an original control part, and the pressure, the flow or the direction of the gas is controlled remotely in a continuous and proportional mode according to an input electric signal. Proportional valves generally have pressure compensating properties. In the digital printing machine for the yardage roll, a yardage roll monitoring part is electrically connected with a proportional valve and sends an electric signal to the proportional valve, and the proportional valve continuously and proportionally controls the pressure of gas according to the input electric signal so as to realize continuous adjustment of the braking force of a braking part.
In one specific example, the digital cloth roll printing machine further comprises a shell, and the compressed air source is arranged on the outer surface of the shell. Further, the distance measuring sensor can also be arranged on the outer surface of the shell, as long as no workpiece for blocking the distance measuring of the distance measuring sensor exists between the position where the distance measuring sensor is arranged and the cloth roll on the unwinding roller. Further, the proportional valve may also be disposed on an outer surface of the housing.
Compared with the traditional digital printing equipment, the digital printing machine for cloth rolls in the embodiment of the invention is additionally provided with the cloth roll monitoring part, the braking part and the braking adjusting part, wherein the braking part can be directly added in the original digital printing machine and arranged on the unwinding roller without occupying an extra position, and the braking adjusting part and the cloth roll monitoring part can be arranged at a certain distance from the unwinding roller and arranged at the upper part of a shell of the machine, so that the digital printing machine for cloth rolls can realize the control of the cloth surface tension in the printing process under the condition of basically not changing the structure of the original digital printing equipment, and the consistency of the printing quality of the cloth surface before and after the printing process is improved.
The invention further provides a digital printing method for cloth rolls, which adopts the digital printing machine for cloth rolls to print the cloth rolls, and comprises the following steps: placing a cloth roll on the unwinding roller, driving the cloth roll to start to move, and starting a digital printing mechanism to print; the diameter of the cloth roll on the unwinding roller is monitored through the cloth roll monitoring part, and the diameter of the cloth roll is transmitted to the braking adjusting part, so that the braking adjusting part gradually reduces the braking force of the braking part according to the reduction of the diameter of the cloth roll.
Specifically, for the digital printing machine for cloth roll in one specific embodiment, the digital printing method for cloth roll may include the following steps: and placing a cloth roll on the unwinding roller, driving the cloth roll to start moving, and conveying the cloth to a digital printing mechanism for printing. Along with the production process lasts, the thickness of yardage roll reduces gradually, and the diameter and the weight of yardage roll also reduce gradually, and distance measuring sensor sends electrical signal for the proportional valve through detecting its and the cloth cover distance, and the proportional valve reduces compressed air's atmospheric pressure size gradually along with the reduction of distance after receiving the signal of telecommunication to realize the braking dynamics of linear control pneumatic brake piece.
It can be understood that in the digital printing method for the yardage roll, along with the reduction of the thickness of the yardage roll, the dead weight of the yardage roll is gradually reduced, so that the tension of the cloth surface is also gradually reduced, meanwhile, the distance measuring sensor measures that the thickness of the yardage roll is gradually reduced, the proportional valve gradually reduces the air pressure of compressed air after receiving a signal, the braking force is reduced, the reduction of the tension of the cloth surface caused by the reduction of the dead weight of the yardage roll is compensated, the stable tension of the cloth surface is successfully realized, and the printing quality and the production efficiency are improved.
In order to facilitate understanding of the digital printing machine for cloth rolls, fig. 1 of the present invention shows a configuration of the digital printing machine for cloth rolls. From the illustration of fig. 1, the skilled person can more intuitively understand the improvement of the digital printing machine for cloth rolls compared to the conventional digital printing apparatus.
Referring to fig. 1, a digital printing machine for fabric rolls comprises a digital printing mechanism (not shown) in the prior art, an unwinding roller 110 and a housing, and further comprises a fabric roll monitoring member 120, a braking member 130 and a braking adjusting member 140, wherein the fabric roll monitoring member 120 is used for continuously monitoring the diameter of a fabric roll 200 on the unwinding roller 110, the braking member 130 is used for braking the unwinding roller 110, the fabric roll monitoring member 120 is electrically connected to the braking adjusting member 140, and the braking adjusting member 140 is used for adjusting the braking force of the braking member 130 in real time according to the signal of the fabric roll monitoring member 120.
The cloth roll monitoring member 120 is a distance measuring sensor, which may be a keyence distance measuring sensor, and is used to monitor the distance between the cloth roll monitoring member and the cloth roll 200. Usually, the digital printing mechanism is disposed on the side of the unwinding roller 110, the distance measuring sensor can be disposed on the side of the cloth roll 200, and the distance between the distance measuring sensor and the roller surface of the unwinding roller 110 is 0.8m to 1.5m, so as to improve the measurement accuracy of the distance measuring sensor.
Further, the brake member 130 includes a brake disc 131, a brake pad, and a compressed air source 133. The brake disc 131 is connected with the rolling shaft of the unwinding roller 110, the brake disc 131 is a pneumatic brake pad close to the brake pad, the pneumatic brake pad is matched with the brake disc 131 for use, and when the pneumatic brake pad is pressed on the brake disc 131, friction force can be generated between the pneumatic brake pad and the brake disc 131 to brake the unwinding roller 110. The compressed air source 133 is connected with the pneumatic brake pad through an air duct, the air pressure in the compressed air source 133 is higher than the atmospheric pressure, and the pneumatic brake pad is in direct contact with the brake disc 131 and generates friction force under the action of the compressed air source 133. Further, the pressure of the gas in the compressed gas source 133 is adjustable. For example, by reducing the pressure of the gas in the compressed gas source 133, the pressure between the pneumatic brake pads and the brake disc 131 can be reduced, thereby reducing the friction between the actuating brake pads and the brake disc 131. The distance measuring sensor is electrically connected to the proportional valve and sends a signal to the proportional valve to instruct the proportional valve to control the pressure of the gas in the compressed gas source 133.
Further, the digital printing device for cloth rolls can also be provided with a cloth guide roller positioned behind the unwinding roller 110 so as to play a role in supporting the cloth surface and changing the running direction of the cloth surface. In one specific example, there may be a plurality of cloth guide rollers.
Additionally set up yardage roll monitoring piece 120 in this yardage roll digital printing equipment, braking piece 130 and braking regulating part 140, through the change of yardage roll monitoring piece 120 monitoring yardage roll 200 diameter, and change the braking dynamics of braking piece 130 according to the diameter change of yardage roll 200, change the dynamics that unreels roller 110 carried cloth through changing the braking dynamics, and then compensate the tension of cloth cover, make the tension of cloth cover maintain a comparatively stable scope, avoid the problem of the printing quality unevenness because the big and leading to of fluctuation range around cloth cover tension. The digital printing device for the cloth roll 200 skillfully determines the weight change of the cloth roll 200 by testing the diameter of the cloth roll 200, correspondingly adjusts the braking force of the braking part 130, and compensates the tension of the cloth roll 200 by braking the unwinding roller 110.
And as can be seen from fig. 1, the digital printing machine for cloth rolls does not basically change the relative positions and connection relations of the components in the original digital printing equipment, and only adds the cloth roll monitoring part 120, the braking part 130 and the braking adjusting part 140. Specifically, wherein brake disc 131 is directly connected with the roller shaft, supporting pneumatic brake block 132 sets up in one side of the roller shaft of unwinding roller 110 originally, and yardage roll monitoring piece 120, compressed air source 133 and braking adjusting part 140 all set up on the shell body of yardage roll digital printing machine, need not to occupy its inner space, have just reduced the influence of newly-increased part to this yardage roll digital printing machine. Therefore, the digital printing machine is only slightly improved on the basis of the original digital printing machine, has low cost and has practical value.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The utility model provides a yardage roll digital printing machine, includes digital printing mechanism and unreels the roller, it is used for supplying the yardage roll to wind and establishes to unreel the roller, digital printing mechanism be used for to yardage roll stamp, its characterized in that still includes yardage roll monitoring part, stopper and braking regulating part, yardage roll monitoring part is used for lasting monitoring is in unreeling on the roller the diameter of yardage roll, the stopper is used for right unreel the roller and brakies, yardage roll monitoring part electricity connect in the braking regulating part, the braking regulating part be used for according to the signal of yardage roll monitoring part is adjusted in real time the braking dynamics of stopper.
2. The digital printing machine for cloth roll according to claim 1, wherein the cloth roll monitoring member is a distance measuring sensor for monitoring the distance between the cloth roll monitoring member and the cloth roll.
3. The digital printing machine for cloth rolls according to claim 2, wherein the distance measuring sensor is disposed above the side of the cloth roll.
4. The digital printing machine for cloth rolls according to claim 2, wherein the distance between the distance measuring sensor and the roll surface of the unwinding roll is 0.8-1.5 m.
5. The digital printing machine for cloth rolls according to any one of claims 1 to 4, wherein the braking member comprises a brake disc and a brake pad, the brake disc is connected with the roll shaft of the unwinding roll, and the brake pad is used for cooperating with the brake disc to brake.
6. The digital cloth roll printing machine according to claim 5, wherein the brake pad is a pneumatic brake pad, and the brake member further comprises a compressed air source for controlling the braking force between the pneumatic brake pad and the brake disc through the air pressure.
7. The digital printing machine of claim 6, further comprising a housing, wherein the compressed air source is disposed on an outer surface of the housing.
8. The digital printing machine for cloth rolls according to claim 6, wherein the braking adjusting member can continuously adjust the braking force of the braking member.
9. The digital printing machine for cloth rolls according to claim 8, wherein the brake adjuster is selected from a proportional valve for reducing the air pressure of the compressed air source.
10. A digital printing method for cloth rolls, which is characterized in that the digital printing machine for cloth rolls as claimed in any one of claims 1 to 9 is used for printing the cloth rolls, and comprises the following steps:
placing the cloth roll on the unwinding roller, driving the cloth roll to start to move, and starting the digital printing mechanism to print;
the diameter of the cloth roll on the unwinding roller is monitored through the cloth roll monitoring piece, the diameter of the cloth roll is transmitted to the braking adjusting piece, and the braking adjusting piece gradually reduces the braking force of the braking piece according to the reduction of the diameter of the cloth roll.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210192466.0A CN114348741A (en) | 2022-02-28 | 2022-02-28 | Digital printing machine and digital printing method for cloth roll |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210192466.0A CN114348741A (en) | 2022-02-28 | 2022-02-28 | Digital printing machine and digital printing method for cloth roll |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114348741A true CN114348741A (en) | 2022-04-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210192466.0A Pending CN114348741A (en) | 2022-02-28 | 2022-02-28 | Digital printing machine and digital printing method for cloth roll |
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| Country | Link |
|---|---|
| CN (1) | CN114348741A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102360930A (en) * | 2011-05-31 | 2012-02-22 | 艾默生网络能源有限公司 | System for automatically controlling winding tension of transformer coil |
| CN103950771A (en) * | 2014-05-04 | 2014-07-30 | 杭州电子科技大学 | Tension control unit and control method thereof in thin film production |
| CN214166825U (en) * | 2020-11-23 | 2021-09-10 | 苏州微水过滤科技有限公司 | Constant tension unreeling slitting device |
| CN216945521U (en) * | 2022-02-28 | 2022-07-12 | 广东溢达纺织有限公司 | Digital printing machine for cloth roll |
-
2022
- 2022-02-28 CN CN202210192466.0A patent/CN114348741A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102360930A (en) * | 2011-05-31 | 2012-02-22 | 艾默生网络能源有限公司 | System for automatically controlling winding tension of transformer coil |
| CN103950771A (en) * | 2014-05-04 | 2014-07-30 | 杭州电子科技大学 | Tension control unit and control method thereof in thin film production |
| CN214166825U (en) * | 2020-11-23 | 2021-09-10 | 苏州微水过滤科技有限公司 | Constant tension unreeling slitting device |
| CN216945521U (en) * | 2022-02-28 | 2022-07-12 | 广东溢达纺织有限公司 | Digital printing machine for cloth roll |
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