阅读说明：本技术 一种便携式打印机 (Portable printer ) 是由 刘义 刘文峰 李晨瑶 于 2021-03-25 设计创作，主要内容包括：本发明公开一种便携式打印机,包括：机身、打印头、控制器、行走滚轮、以及传感器,所述打印头安装于所述机身,所述打印头的一侧为用于摆放被打印物的工作面；所述控制器安装于所述机身,所述控制器用于控制所述打印头的工作；所述行走滚轮可转动地安装于所述机身,所述行走滚轮的轴线所在方向定义为宽度方向；所述传感器用于获取所述行走滚轮的转动信息并发送给所述控制器。本发明的便携式打印机,通过在机身上设置行走滚轮和检测行走滚轮的传感器,使打印头可以灵活地悬行于各种等被打印物的表面,使用灵活方便,成本低。(The invention discloses a portable printer, comprising: the printing head is arranged on the machine body, and one side of the printing head is a working surface for placing a printed object; the controller is arranged on the machine body and is used for controlling the working of the printing head; the walking roller is rotatably arranged on the machine body, and the direction of the axis of the walking roller is defined as the width direction; the sensor is used for acquiring the rotation information of the walking roller and sending the rotation information to the controller. The portable printer of the invention can flexibly suspend the printing head on the surface of various objects to be printed by arranging the walking roller and the sensor for detecting the walking roller on the body, and has flexible and convenient use and low cost.)

1. A portable printer, characterized in that the portable printer comprises:

a body;

the printing head is arranged on the machine body, and one side of the printing head is a working surface for placing a printed object;

the controller is arranged on the machine body and is used for controlling the working of the printing head;

the walking roller is rotatably arranged on the machine body, and the direction of the axis of the walking roller is defined as the width direction; and

and the sensor is used for acquiring the rotation information of the walking roller and sending the rotation information to the controller.

2. The portable printer according to claim 1, wherein a peripheral surface portion of said traveling roller is exposed to said working surface.

3. The portable printer according to claim 1, wherein at least two of said traveling rollers are provided and are respectively disposed on both sides of said body in a width direction, and said sensor is configured to acquire rotation information of at least one of said traveling rollers.

4. The portable printer according to claim 1, further comprising a frame provided with two guide rails at both sides of the width direction of the body, respectively, wherein the traveling roller comprises:

the guide wheel set runs on the guide rail; and

the circumferential surface of the swaging wheel set is partially exposed out of the working surface, and the sensor is used for acquiring the rotation information of the swaging wheel set.

5. The portable printer of claim 4, wherein said guide wheel assembly comprises:

the peripheral surface of the bearing roller is a cylindrical surface which is abutted against the top surface of the guide rail; and

the limiting idler wheel comprises a wheel main body and a limiting flange, and the peripheral surface of the wheel main body is a cylindrical surface which is abutted against the top surface of the guide rail; the limiting flange is used for abutting against the side face of the guide rail for limiting.

6. The portable printer according to claim 5, wherein said load bearing roller is plurally arranged along a length direction of said guide rail.

7. The portable printer according to claim 5, wherein a fitting clearance is provided between the position-defining flange and the side surface of the guide rail.

8. The portable printer of claim 4, wherein the nip wheel set comprises:

the transmission roller is positioned in the middle of the machine body in the width direction, and the sensor is used for acquiring the rotation information of the transmission roller; and

the edge pressing rollers are provided with at least two guide rails which are respectively close to the corresponding sides.

9. The portable printer according to claim 8, wherein the driving roller is rotatably mounted in the middle of a rotating shaft, both ends of the rotating shaft are fixed to the body, the sensor is an encoder, a friction wheel is mounted on a rotor shaft of the encoder, and a circumferential surface of the friction wheel abuts against a circumferential surface of the driving roller.

10. The portable printer according to any one of claims 4 to 8, wherein said frame is a rectangular frame and comprises two oppositely disposed cross members and two oppositely disposed longitudinal members, said cross members being provided with handles, and two of said guide rails being formed as two of said longitudinal members, both ends of said guide rail being connected to said cross members at the respective ends by fasteners.

Technical Field

The invention relates to the technical field of printers, in particular to a portable printer.

Background

Printers can be classified into home printers and industrial printers according to their purposes, and home printers are small in size, low in price, and generally capable of printing patterns, characters and the like only on specific consumables. The industrial printer can print patterns on thicker plates, plastics and fabrics, but has large equipment volume and high manufacturing cost, and is generally used for batch printing operation on corrugated paper and the like with specific specifications. In order to adapt to the printing of small-batch and small-size plates, an industrial printer needs to be modified, and the method is not economical.

With the development of the economy of the electronic commerce, the business requirement for printing small-batch and nonstandard consumables is increasing day by day, and the traditional printer is large in size, high in price, not flexible enough to adapt to the new business requirement.

Disclosure of Invention

The invention mainly aims to provide a portable printer, and aims to solve the problem that the conventional printer is not flexible to use.

To achieve the above object, the present invention provides a portable printer including:

a body;

the printing head is arranged on the machine body, and one side of the printing head is a working surface for placing a printed object;

the controller is arranged on the machine body and is used for controlling the working of the printing head;

the walking roller is rotatably arranged on the machine body, and the direction of the axis of the walking roller is defined as the width direction; and

and the sensor is used for acquiring the rotation information of the walking roller and sending the rotation information to the controller.

Optionally, the peripheral surface of the walking roller is partially exposed to the working surface.

Optionally, the walking rollers are at least two and are respectively located on two sides of the machine body in the width direction, and the sensor is used for acquiring rotation information of at least one walking roller.

Optionally, portable printer still includes the frame, the frame is equipped with the guide rail, the guide rail be two and respectively in fuselage width direction's both sides, the walking gyro wheel includes:

the guide wheel set runs on the guide rail; and

the circumferential surface of the swaging wheel set is partially exposed out of the working surface, and the sensor is used for acquiring the rotation information of the swaging wheel set.

Optionally, the guide wheel set comprises:

the peripheral surface of the bearing roller is a cylindrical surface which is abutted against the top surface of the guide rail; and

the limiting idler wheel comprises a wheel main body and a limiting flange, and the peripheral surface of the wheel main body is a cylindrical surface which is abutted against the top surface of the guide rail; the limiting flange is used for abutting against the side face of the guide rail for limiting.

Optionally, the bearing rollers are arranged in plurality along the length direction of the guide rail.

Optionally, a fit clearance is provided between the limiting flange and the side surface of the guide rail.

Optionally, the nip wheel set includes:

the transmission roller is positioned in the middle of the machine body in the width direction, and the sensor is used for acquiring the rotation information of the transmission roller; and

the edge pressing rollers are provided with at least two guide rails which are respectively close to the corresponding sides.

Optionally, the transmission roller is rotatably installed in the middle of the rotating shaft, both ends of the rotating shaft are fixed to the machine body, the sensor is an encoder, a friction wheel is installed on a rotor shaft of the encoder, and the peripheral surface of the friction wheel abuts against the peripheral surface of the transmission roller.

Optionally, the frame is a rectangular frame and includes two cross beams arranged oppositely and two longitudinal beams arranged oppositely, the cross beam is provided with a handle, the two guide rails form two longitudinal beams, and two ends of the guide rails are connected with the cross beam at the corresponding end through fasteners.

According to the technical scheme, the walking rollers are arranged on the machine body, so that when a person pushes the machine body by hand, the printing head can pass through the surface of a printed object such as a paperboard, and patterns are printed on the surface of the printed object; the consistency of the current position of the machine body and the output pattern is ensured by arranging the sensor, so that the patterns can be printed on the surfaces of paper boards and even paper boxes of various specifications, the use is flexible and convenient, the cost is low, and the current market demand is met.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a front view of FIG. 1;

FIG. 3 is a bottom view of FIG. 1;

FIG. 4 is a schematic structural diagram according to an embodiment of the present invention;

FIG. 5 is a front view of an embodiment of the present invention;

fig. 6 is an enlarged view of region a in fig. 5.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				100	Fuselage body	420	Pressing wheel set
110	Rims	421	Transmission roller
				120	Guard board	4211	Rotating shaft
200	Printing head	422	Edge pressing roller
				300	Printed material	500	Sensor with a sensor element
400	Walking roller	510	Friction wheel
				410	Guide wheel set	600	Rack
411	Bearing roller	610	Guide rail
				412	Spacing roller	620	Cross beam
4121	Wheel body	630	Handle bar
				4122	Limit flange

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all the directional indications in the embodiments of the present invention are only used to explain the relative position relationship, the motion situation, and the like between the components in a certain posture, and if the certain posture is changed, the directional indication is changed accordingly.

In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes 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 at least one such feature. In addition, the meaning of "and/or" appearing throughout is to include three juxtapositions, exemplified by "A and/or B," including either the A or B arrangement, or both A and B satisfied arrangement. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The portable printer provided by the invention is low in manufacturing cost and can be flexibly applied to various scenes. Fig. 1 to 6 show an embodiment of a portable printer according to the present invention.

Referring to fig. 1 to 3, the portable printer includes a body 100, a printhead 200, a controller, a walking roller 400, and a sensor 500.

The portable printer of the present invention may be a stylus printer, an ink jet printer, a thermal printer, a laser printer, a digital printer, etc.

The print head 200 is mounted on the body 100, and one side of the print head 200 is a work surface for placing the object 300 to be printed, and the work surface is a surface of the print head 200 facing the object 300 to be printed. Taking an inkjet printer as an example, ink is ejected from a work surface. A controller is mounted to the body 100, and the controller is used to control the operation of the printhead 200.

The traveling roller 400 is rotatably installed on the body 100, the direction of the axis of the traveling roller 400 is defined as the width direction, and the traveling roller 400 can directly travel on the surface of the object 300 to be printed or can travel on other supporting surfaces such as a table, the ground, and the like. The travel rollers 400 may be limited to travel in a straight line, such as by being bearing mounted to the fuselage 100. The running rollers 400 can also run in any direction, for example, using universal wheels. The printed matter 300 may be a paper board, a paper tape, a plastic board, a tape fabric, a packing case, or the like.

The sensor 500 is used to acquire rotation information of the walking roller 400, which may be a rotation number, an angular displacement, an angular velocity, an angular acceleration, a linear displacement, a linear velocity, etc. of the walking roller 400, and send the rotation information to the controller. The rotation information may be sent to the controller by wired or wireless means. Specifically, the sensor 500 may be an encoder, a hall sensor, or the like.

At present, there are two main types of action processes of an industrial printer, one is that a printing head is kept fixed, a roller, a conveyer belt and the like drive a printed object 300 to pass under the printing head at a constant speed, if the size of the printed object 300 is significantly smaller than the width of the conveyer belt, the position of the printed object 300 needs to be accurately placed, and a large static friction force exists between the printed object 300 and the conveyer belt, so that the pattern is prevented from being printed off or the edge of the printed object 300 is not printed with a pattern.

The other is that the conveying mechanism sends the object 300 to the printing station and fixes, and the printing head moves at a constant speed above the object 300 and prints patterns. When the printed matter 300 is of a fixed specification matching the workstation, the pattern position of such a printer is accurate, but the efficiency is low. When the size of the object 300 to be printed is small or the shape is irregular, an additional positioning mechanism needs to be designed and a positioning step needs to be added, again reducing the efficiency.

In addition, such an industrial printer is generally bulky and difficult to carry, and is not suitable for printing with small-lot, non-standard consumables because the pattern printing effect at the edge of the object 300 is not good.

In the technical scheme of the invention, the print head 200 can move close to the surface of the object 300 to be printed by arranging the walking roller 400, thereby printing the pattern. When the printer is used, the body can be pushed by manpower to move along the object 300 to be printed, and the walking roller 400 presses the object 300 to be printed, so that the position of the object 300 to be printed is kept fixed. The rotation information of the walking roller 400 is transmitted to the controller through the sensor 500, and thus, even if the speed of pushing the body 100 by a human hand is not uniform, the output pattern of the print head 200 can be ensured to be consistent with the current position of the print head 200.

The invention omits a material conveying mechanism and a driving and guiding mechanism of the printing head 200, and the whole volume and the manufacturing cost are greatly reduced. The invention can be put on the top surface or the side surface of the printed matter 300 with a plane structure or a three-dimensional structure for printing operation, and is flexible and convenient to use.

In order to prevent the object 300 from scratching the print head 200, in one embodiment, the circumferential surface of the traveling roller 400 is partially exposed to the working surface. Thus, when the walking roller 400 rolls on the top surface of the object 300, the bottom surface of the print head 200 is a working surface, and the distance between the lowest point of the circumferential surface of the walking roller 400 and the working surface is H, which is the gap between the object 300 and the print head 200, so that the optimal gap can be obtained in field debugging. In one embodiment, the distance H is 1mm to 3 mm.

In a production printing line, the edge of the object 300 may be warped, and an industrial printer usually blocks the object 300 with too large warping by adding a detection process.

In order to prevent the edge of the object 300 from warping and damaging the print head 200, referring to fig. 1 to 3, in an embodiment, at least two walking rollers 400 are disposed at two sides of the body 100 in the width direction, respectively, and the sensor is configured to acquire rotation information of at least one walking roller 400. The two traveling rollers 400 are respectively disposed at both sides of the body 100 to prevent the printhead 200 from being tilted. If the opposite sides of the object 300 to be printed are warped before entering under the printhead 200, the warped portions are flattened by the traveling rollers 400, thereby preventing the printhead 200 from being scratched.

Specifically, in one embodiment, the number of the walking rollers 400 is two, and the peripheral surfaces of the two walking rollers 400 are partially exposed to the working surface. In the use state, the two traveling rollers 400 contact the top surface of the object 300 to be printed. In another embodiment, the number of the traveling rollers 400 is three or more, and at least two of the traveling rollers 400 contact the top surface of the object 300 in the use state, and gaps are left between the remaining traveling rollers 400 and the working surface.

When the hardness of the object 300 to be printed is small, for example, when the object 300 to be printed is corrugated paper, the operator needs to control the pressing force to prevent the walking roller 400 from pressing dents on the surface of the corrugated paper, so as to prevent the corrugated paper from scratching the print head 200.

In order to reduce the printing difficulty on the soft object 300, referring to fig. 4 and 5, in an embodiment, the portable printer further includes a frame 600, the frame 600 is provided with two guide rails 610, the two guide rails 610 are respectively located at two sides of the width direction of the body 100, and the traveling roller 400 includes a guide roller set 410 and a nip roller set 420. The guide wheel set 410 runs on the guide rail 610 on the corresponding side, the peripheral surface of the nip wheel set 420 is partially exposed on the working surface, and the sensor is used for acquiring the rotation information of the nip wheel set.

In this embodiment, the cooperation of the guide wheel set 410 and the guide rail 610 ensures that the print head 200 moves along a straight line, which is adapted to the shape of most of the object 300 to be printed. The guide wheel set 410 can be provided with a small volume and high stiffness to reduce the overall volume of the present invention. The axial dimension of the nip roller set 420 may be relatively large to prevent slippage between the circumferential surface of the nip roller set 420 and the object 300 to be printed, and ensure that the printing action of the print head 200 is synchronized with the current position of the print head 200. The displacement information of the print head 200 is based on the rotation information of the nip roller set 420, but not on the information of the guide roller set 410, because the nip roller set 420 does not have to bear the main weight of the body 100, and therefore, a soft material can be used, and the slip is not easy to occur, so that the obtained displacement information is more accurate.

To prolong the service life of the guide wheel set 410, referring to fig. 3 and 6, in an embodiment, the guide wheel set 410 includes a bearing roller 411 and a limit roller 412. The circumferential surface of the bearing roller 411 is a cylindrical surface abutting against the top surface of the guide rail 610. The limiting roller 412 comprises a roller body 4121 and a limiting flange 4122, the circumferential surface of the roller body 4121 is a cylindrical surface abutting against the top surface of the guide rail 610, and the limiting flange 4122 is used for abutting against the side surface of the guide rail 610 for limiting.

At least two bearing rollers 411 and at least two limiting rollers 412 are provided, and the two limiting rollers 412 are located between the two bearing rollers 411 in the width direction of the machine body 100. The axial length of the load bearing roller 411 may be large to reduce stress and prolong service life. The weight of the body 100 is mainly borne by the bearing rollers 411, so that the pressure on the edges of the guide wheel set 410 and the guide rail 610 is reduced, and the guide wheel set 410 has a guiding function and is not easy to deform.

To further extend the service life of the guide roller set 410, referring to fig. 4, in one embodiment, a plurality of load-bearing rollers 411 are arranged along the length direction of the guide rail 610.

To reduce the resistance when pushing the body 100, referring to fig. 6, in an embodiment, a fitting gap is provided between the limit flange 4122 and the side surface of the guide rail 610, and the size of the fitting gap is 0.2mm to 2mm, which not only ensures that the body 100 moves substantially along a straight line, but also avoids generating excessive frictional resistance between the limit flange 4122 and the side surface of the guide rail 610.

In order to prevent the object 300 from warping and hanging the print head 200, referring to fig. 2, in an embodiment, the nip roller set 420 includes a driving roller 421 and a blank roller 422. The driving roller 421 is located at the middle of the body 100 in the width direction, and the sensor 500 is used for acquiring the rotation information of the driving roller 421. The edge pressing rollers 422 are disposed at least two and respectively adjacent to the guide rails 610 of the corresponding sides. Before the printed matter 300 enters the lower part of the printing head 200, the printed matter passes through the transmission roller 421 and the edge pressing roller 422, the transmission roller 421 presses the arched part of the transverse middle part of the printed matter 300 flatly, and the edge pressing roller 422 presses the warped parts of the two sides of the printed matter 300 flatly. The outer diameter of the edge roller 422 is smaller and can be closer to the print head 200. The outer diameter and the axial dimension of the edge pressing roller 422 are larger, so that the edge pressing roller 422 and the printed matter 300 are prevented from slipping, and the detection data of the sensor 500 is more accurate.

Specifically, the transmission roller 421 is rotatably installed in the middle of the rotation shaft 4211, and both ends of the rotation shaft 4211 are fixed to the body 100, so as to reduce the shaking of the swaging wheel set 420 in the height direction, and ensure the accuracy of the detection data of the sensor 500. The sensor 500 is an encoder, the rotor shaft of which is fitted with a friction wheel 510. The circumferential surface of the friction wheel 510 abuts against the circumferential surface of the driving roller 421, and synchronously rotates by static friction. The circumferential surface of the friction wheel 510 may be plastic, rubber, or the like.

The frame 600 is a rectangular frame and includes two cross beams 620 oppositely disposed and two longitudinal beams oppositely disposed, the cross beam 620 is provided with a handle 630 to shift the position of the frame 600, two guide rails 610 are formed as the two longitudinal beams, and both ends of the guide rails 610 are connected with the cross beam 620 at the corresponding end by fasteners.

In one embodiment, the main body 100 includes a frame 110, the bearing roller 411, the limit roller 412 and the edge roller 422 are mounted on the frame 110 through bearings, both ends of the rotating shaft 4211 are adjustably mounted on the frame 110, and the print head 200 is adjustably mounted on the frame 110. The guard plate 120 is disposed above the driving roller 421, and the guard plate 120 is provided with an escape opening at a contact portion between the friction wheel 510 and the driving roller 421.

When the device is used, the object 300 to be printed can be placed between the two guide rails 610, and two transverse edges of the object 300 to be printed respectively abut against the guide rails 610 on the corresponding sides for limiting. For the object 300 with a large width, the frame 600 can be pressed on the top surface of the object 300 as a whole, and the heights of the print head 200 and the driving roller 421 can be adjusted adaptively.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.