Printer and control method thereof

Abstract

The present invention discloses a printer and a control method thereof, wherein the printer comprises a housing; a guide roller protective cover; a printing paper guide mechanism, comprising a group of guide plates and a group of mounting shafts respectively arranged on both sides of the upper and lower parts of the paper guide part, a clamping guide wheel is movably mounted on the mounting shaft through a fixed guide wheel, an iron limit plate is fixedly connected to the upper part of the clamping guide wheel, and electromagnets are respectively arranged on both sides of the guide roller protective cover; during printing, the electromagnet is energized to form adsorption on the outer side of the iron limit plate, so that the inner side of the clamping guide wheel tilts downward and cooperates with the fixed guide wheel to clamp the printing paper, and as the printing paper moves forward, the mounting shaft rotates, and the clamping guide wheel and the fixed guide wheel rotate accordingly, and continuously pull the printing paper outward on both sides; a driving motor. The present invention can prevent positional deviation during paper feeding, and can pull and tension both sides of the printing paper during printing and paper feeding, so as to overcome the curling problem of the printing paper roll existing in external paper feeding.

Description

Technical Field

[0001] The present invention relates to the technical field of printers and printing control thereof, and in particular to a printer and a control method thereof. Background Art

[0002] In order to improve the portability of printers, miniaturized thermal printers have begun to be widely used. In order to further improve the miniaturization and portability of thermal printers, thermal printers without paper storage bins have begun to be put into use. By setting the paper guide slope on the upper cover of the housing, the external printing paper roll can be directly guided to the printing end of the printer for printing.

[0003] In order to ensure the stability of paper feeding in the printer, existing printers will set a paper guide component on the upper cover of the casing to prevent the external paper feeding from deviating from the position. Although this effectively solves the problem of paper deviation, due to the curling of the paper roll itself and the large clamping force of the thermal printer's printer head on the printer, the paper is prone to wrinkling and deformation during printing. In severe cases, the paper may even get stuck, which is very troublesome.

[0004] Therefore, the purpose of the present invention is to design a printer and its control method that can effectively prevent the printing paper from being displaced during the paper feeding process, and can pull and tension both sides of the printing paper during the printing and paper feeding process to overcome the curling problem of the printing paper roll existing in the external paper feeding, thereby effectively ensuring the smoothness of printing. Summary of the invention

[0005] In view of the technical problems existing in the above-mentioned prior art, the present invention provides a printer and a control method thereof, which can effectively solve the technical problems existing in the above-mentioned prior art.

[0006] The technical solution of the present invention is:

[0007] A printer comprising

[0008] The casing has a corresponding mounting base plate fixedly connected to the bottom of the casing, a corresponding bottom plate is movably mounted on the upper side of the mounting base plate, corresponding hook plates are folded upwards on both sides of the bottom plate, corresponding snap-fit ​​plates are arranged on the upper part of the hook plates, corresponding snap-fit ​​grooves are arranged on the upper part of the hook plates, and a corresponding limiting shaft is fixedly connected inwardly to the middle part of the hook plates; a corresponding print head mounting plate is fixedly connected upwards to the upper side of the bottom plate through a first elastic member, corresponding fixing ear plates are arranged on both sides of the print head mounting plate, and guide long holes matched with the limiting shaft are arranged on the fixing ear plates , a corresponding print head is fixedly connected to the upper side of the print head mounting plate; the two sides of the mounting seat plate are respectively folded upward and provided with corresponding mounting grooves outward, the two sides of the print head mounting plate are respectively movably plugged into the folded parts of the mounting seat plate, and the corresponding print guide rollers are rotatably mounted between the mounting grooves through mounting guide sleeves, and after the snap-fitting grooves of the hook plate are snapped into the mounting guide sleeves on both sides of the print guide roller, the first elastic member is compressed, and the print head mounting plate is lifted upward so that the print head abuts against the bottom side of the print guide roller;

[0009] An upper cover is fixedly mounted on the upper part of the housing, and a corresponding paper guide is arranged on a side of the upper cover facing the print head and tilted downward, and the lower end of the paper guide is directly opposite to between the print head and the print guide roller;

[0010] A guide roller protection cover is installed to cover the outer side of the printing guide roller, and two sides of the guide roller protection cover are respectively folded downward and fixed to the installation guide sleeve;

[0011] The printing paper guide mechanism comprises a group of guide plates arranged on both sides of the upper part of the paper guide part, and a group of mounting shafts rotating on both sides of the lower part of the paper guide part, wherein corresponding fixed guide wheels are fixedly connected to the mounting shafts respectively, and corresponding pressing guide wheels are movably installed upwardly through corresponding second elastic members on the upper parts of the fixed guide wheels respectively, and iron limit plates are fixedly connected to the upper parts of the pressing guide wheels, and electromagnets located on the outer sides of the corresponding iron limit plates are respectively arranged on both sides of the guide roller protective cover. When printing, the electromagnets are energized to form adsorption on the outer sides of the iron limit plates, so that the inner sides of the pressing guide wheels are tilted downward and cooperate with the fixed guide wheels to clamp the printing paper, and as the printing paper moves forward, the mounting shafts rotate accordingly, and the pressing guide wheels and the fixed guide wheels rotate accordingly, and continuously pull the printing paper outwards on both sides;

[0012] A driving motor, fixedly connected to the housing, for driving the printing guide roller to rotate;

[0013] The power supply mechanism comprises a storage battery fixedly installed in the housing, and the driving motor, the print head and the electromagnet are respectively connected to the storage battery through corresponding electric control switches.

[0014] The upper surface of the paper guide portion is provided with a plurality of corresponding paper guide protrusions which protrude upward at intervals, and the upper end surfaces of the fixed guide wheels are respectively located at the lower sides of the paper guide protrusions.

[0015] The hook plate is integrally formed with a corresponding limit plate which is arranged outwardly, and the limit plate extends through and extends to the outside of the folded portion of the mounting seat plate, and the upper cover is provided with a button which can press the limit plate to separate the hook plate from the mounting guide sleeve.

[0016] The electric control switch is fixedly mounted on the upper cover at one side of the button.

[0017] The folded parts of the guide roller protective cover are respectively provided with corresponding limiting guide holes, and guide blocks which are clamped into the limiting guide holes are fixedly connected to both sides of the upper cover.

[0018] The housing and the guide roller protection cover are respectively provided with corresponding clearance grooves on one side opposite to the other, and the clearance grooves provided on the housing and the guide roller protection cover cooperate to form corresponding paper outlets.

[0019] The end of the clearance groove of the guide roller protective cover is arranged in a sawtooth shape.

[0020] The printing guide roller is connected to the output shaft end of the driving motor through a gear transmission method.

[0021] The first elastic member is a coil spring, and the second elastic member is an elastic rubber gasket.

[0022] A printer control method, based on the above-mentioned printer, comprises the following specific steps:

[0023] S1, controlling the print head to start printing operation through the electrical control switch, and at the same time, starting the drive motor to drive the print guide roller to rotate, thereby driving the print paper through the print head to perform printing operation;

[0024] S2, controls the electromagnet to be energized to adsorb the outer side of the iron limit plate, so that the inner side of the clamping guide wheel tilts downward and cooperates with the fixed guide wheel to clamp the printing paper. As the printing paper moves forward, the mounting shaft rotates, and the clamping guide wheel and the fixed guide wheel rotate accordingly, and continue to pull the printing paper outward on both sides.

[0025] Advantages of the present invention:

[0026] 1) In the present invention, a group of mounting shafts fixedly connected to a fixed guide wheel are added on the basis of a group of guide plates, and a clamping guide wheel is installed on the upper part of the fixed guide wheel through a second elastic member; the most important thing is that an iron limit plate is fixedly connected to the upper part of the clamping guide wheel, and then electromagnets located on the outer side of the corresponding iron limit plates are respectively arranged on both sides of the guide roller protective cover. When printing, by controlling the electromagnet to be energized to form adsorption on the outer side of the iron limit plate, the inner side of the clamping guide wheel can be tilted downward and cooperate with the fixed guide wheel to clamp the printing paper. As the printing paper moves forward, the mounting shaft rotates, and the clamping guide wheel and the fixed guide wheel rotate accordingly, and continuously pull the printing paper outward on both sides. Thereby, it can effectively prevent the printing paper from being offset during the paper feeding process, and can also pull and tension both sides of the printing paper during the printing paper feeding process to overcome the curling problem of the printing paper roll existing in the external paper feeding, thereby effectively ensuring the smoothness of printing.

[0027] 2) The upper surface of the paper guide portion of the present invention is provided with a plurality of corresponding paper guide protrusions which are raised upward at intervals, and the upper end surfaces of the fixed guide wheels are respectively located on the lower sides of the paper guide protrusions, so that when the clamping guide wheel and the fixed guide wheel pull the printing paper, the middle parts thereof can be slightly lifted upward, thereby unfolding the printing paper, so as to further effectively overcome the curling problem of the printing paper roll existing in the external paper feeding, so as to further effectively ensure the smoothness of printing. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of the present invention.

[0029] Figure 2 It is an exploded view of the parts of the present invention.

[0030] Figure 3 It is a schematic diagram of the structure of the upper cover and guide roller protection cover.

[0031] Figure 4 Assembly drawing of the base plate and print head mounting plate installed on the mounting base plate.

[0032] Figure 5 It is a cross-sectional view of a print head mounting plate mounted on the upper side of a base plate.

[0033] Figure 6 This is a structural schematic diagram of a clamping guide wheel connected to a fixed guide wheel via a second elastic member.

[0034] In the accompanying drawings: casing 1, mounting base plate 2, mounting groove 201, bottom plate 3, hook plate 301, snap-fit ​​groove 4, limit shaft 5, first elastic member 6, print head mounting plate 7, fixed ear plate 701, print head 702, mounting guide sleeve 8, print guide roller 9, upper cover 10, paper guide part 1001, guide roller protective cover 11, print paper guide mechanism 12, guide plate 1201, mounting shaft 1202, fixed guide wheel 1203, second elastic member 1204, clamping guide wheel 1205, iron limit plate 1206, electromagnet 1207, drive motor 13, power supply mechanism 14, electric control switch 15, paper guide flange 16, limit plate 17, button 18, limit guide hole 19, guide block 20, paper outlet 21. DETAILED DESCRIPTION

[0035] In order to facilitate understanding by those skilled in the art, the structure of the present invention is further described in detail with reference to the embodiments in conjunction with the accompanying drawings:

[0036] Embodiment 1:

[0037] refer to Figure 1-6 , a printer comprising

[0038] The housing 1 has a corresponding mounting base plate 2 fixedly connected to the bottom of the housing 1, a corresponding bottom plate 3 is movably installed on the upper side of the mounting base plate 2, and corresponding hook plates 301 are folded upwards on both sides of the bottom plate 3, and corresponding snap-fit ​​plates 301 are provided on the upper part of the hook plates 301, and corresponding snap-fit ​​grooves 4 are provided on the upper part of the hook plates 301, and a corresponding limit shaft 5 is fixedly connected inwardly to the middle part of the hook plates 301; a corresponding print head mounting plate 7 is fixedly connected upwards to the upper side of the bottom plate 3 through a first elastic member 6, and corresponding fixing ear plates 701 are provided on both sides of the print head mounting plate 7, and a guide long hole adapted to the limit shaft 5 is provided on the fixing ear plates 701 , the upper side of the print head mounting plate 7 is fixedly connected with a corresponding print head 702; the two sides of the mounting seat plate 2 are respectively folded upward and provided with corresponding mounting grooves 201 outwardly, the two sides of the print head mounting plate 7 are respectively movably plugged into the folded parts of the mounting seat plate 2, and the corresponding print guide rollers 9 are rotatably installed between the mounting grooves 201 through the mounting guide sleeves 8, and after the clamping grooves 4 of the hook plate 301 are buckled into the mounting guide sleeves 8 on both sides of the print guide roller 9, the first elastic member 6 is compressed, and the print head mounting plate 7 is lifted upward so that the print head 702 abuts against the bottom side of the print guide roller 9;

[0039] The upper cover 10 is fixedly mounted on the upper part of the housing 1. A corresponding paper guide 1001 is tilted downwardly on the side of the upper cover 10 facing the print head 702. The lower end of the paper guide 1001 is directly opposite to between the print head 702 and the print guide roller 9.

[0040] A guide roller protection cover 11 is installed to cover the outer side of the printing guide roller 9, and two sides of the guide roller protection cover 11 are folded downward and fixed to the installation guide sleeve 8;

[0041] The printing paper guide mechanism 12 comprises a group of guide plates 1201 arranged on both sides of the upper part of the paper guide part 1001, and a group of mounting shafts 1202 rotating on both sides of the lower part of the paper guide part 1001, the mounting shafts 1202 are respectively fixed with corresponding fixed guide wheels 1203, the upper part of the fixed guide wheels 1203 is respectively upwardly movably mounted with corresponding clamping guide wheels 1205 through corresponding second elastic members 1204, the upper part of the clamping guide wheels 1205 is fixed with iron limit plates 1206, and the guide roller protection Electromagnets 1207 are respectively provided on both sides of the cover 11 and are located outside the corresponding iron limit plates 1206. When printing, the electromagnets 1207 are energized to form adsorption on the outside of the iron limit plates 1206, so that the inner side of the clamping guide wheel 1205 tilts downward to cooperate with the fixed guide wheel 1203 to clamp the printing paper. As the printing paper moves forward, the mounting shaft 1202 rotates, and the clamping guide wheel 1205 and the fixed guide wheel 1203 rotate accordingly, and continuously pull the printing paper outward on both sides.

[0042] A driving motor 13, fixedly connected to the housing 1, for driving the printing guide roller 9 to rotate;

[0043] The power supply mechanism 14 includes a battery fixedly installed in the housing 1, and the driving motor 13, the print head 702, and the electromagnet 1207 are respectively connected to the battery through corresponding electrical control switches 15.

[0044] The present invention is based on a group of guide plates 1201, and is additionally provided with a group of mounting shafts 1202 fixedly connected with fixed guide wheels, and a pressing guide wheel 1205 is installed on the upper part of the fixed guide wheel 1203 through a second elastic member 1204; the most important thing is that an iron limit plate 1206 is fixedly connected to the upper part of the pressing guide wheel 1205, and then electromagnets 1207 located on the outer side of the corresponding iron limit plates 1206 are respectively provided on both sides of the guide roller protective cover 11. When printing, by controlling the electromagnet 1207 to be energized to form adsorption on the outer side of the iron limit plate 1206, the inner side of the pressing guide wheel 1205 can be tilted downward, and cooperate with the fixed guide wheel 1203 to clamp the printing paper. As the printing paper moves forward, the mounting shaft 1202 rotates, and the pressing guide wheel 1205 and the fixed guide wheel 1203 rotate accordingly, and continuously pull the printing paper outward on both sides. This can effectively prevent the printing paper from being offset during the paper feeding process, and can also pull and tension both sides of the printing paper during the printing and paper feeding process to overcome the curling problem of the printing paper roll existing in external paper feeding, thereby effectively ensuring smooth printing.

[0045] The upper surface of the paper guide portion 1001 is provided with a plurality of corresponding paper guide protrusions 16 which protrude upward at intervals, and the upper end surfaces of the fixed guide wheels 1203 are respectively located on the lower sides of the paper guide protrusions 16, so that when the clamping guide wheel 1205 and the fixed guide wheel 1203 pull the printing paper, the middle parts thereof can be slightly lifted upward, thereby unfolding the printing paper, so as to further effectively overcome the curling problem of the printing paper roll caused by external paper feeding, so as to further effectively ensure the smoothness of printing.

[0046] The hook plate 301 is integrally formed with a corresponding limit plate 17, which extends through and extends to the outside of the folded portion of the mounting seat plate 2. The upper cover 10 is provided with a button 18 that can press the limit plate 17 to separate the hook plate 301 from the mounting guide sleeve 8. The electric control switch 15 is fixedly mounted on the upper cover 10 on one side of the button 18.

[0047] The folded parts of the guide roller protection cover 11 are respectively provided with corresponding limiting guide holes 19 , and the two sides of the upper cover 10 are fixedly connected with guide blocks 20 that are clamped into the limiting guide holes 19 .

[0048] The housing 1 and the guide roller protection cover 11 are provided with corresponding clearance grooves on the opposite sides, and the clearance grooves provided on the housing 1 and the guide roller protection cover 11 cooperate to form a corresponding paper outlet 21. The end of the clearance groove of the guide roller protection cover 11 is provided in a sawtooth shape.

[0049] The printing guide roller 9 is connected to the output shaft end of the driving motor 13 through a gear transmission. The first elastic member 6 is a spiral spring, and the second elastic member 1204 is an elastic rubber gasket.

[0050] Embodiment 2:

[0051] A printer control method, based on the printer described in the first embodiment, comprises the following specific steps:

[0052] S1, the print head 702 is controlled by the electrical control switch 15 to start the printing operation, and at the same time, the drive motor 13 is started to drive the print guide roller 9 to rotate, so as to drive the printing paper through the print head 702 to perform the printing operation;

[0053] S2, control the electromagnet 1207 to be energized to form adsorption on the outer side of the iron limit plate 1206, so that the inner side of the clamping guide wheel 1205 tilts downward and cooperates with the fixed guide wheel 1203 to clamp the printing paper. As the printing paper moves forward, the mounting shaft 1202 rotates, and the clamping guide wheel 1205 and the fixed guide wheel 1203 rotate accordingly, and continue to pull the printing paper outward on both sides.

[0054] When printing is performed by the present invention, it is possible to effectively prevent the position of the printing paper from being offset during the paper feeding process, and to pull and tension both sides of the printing paper during the printing and paper feeding process to overcome the curling problem of the printing paper roll existing in the external paper feeding, thereby effectively ensuring the smoothness of printing.

[0055] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A printer, characterized in that: include A housing (1), wherein a corresponding mounting base plate (2) is fixedly connected to the bottom of the housing (1), a corresponding bottom plate (3) is movably mounted on the upper side of the mounting base plate (2), and corresponding hook plates (301) are folded upwards on both sides of the bottom plate (3), a corresponding clamping groove (4) is arranged on the upper part of the hook plate (301), and a corresponding limit shaft (5) is fixedly connected inwardly to the middle part of the hook plate (301); a corresponding print head mounting plate (7) is fixedly connected upwards to the upper side of the bottom plate (3) through a first elastic member (6), and corresponding fixing ear plates (701) are arranged on both sides of the print head mounting plate (7), and a guide length (701) adapted to the limit shaft (5) is arranged on the fixing ear plates (701). The printing head mounting plate (7) has a hole, and a corresponding printing head (702) is fixedly connected to the upper side of the printing head mounting plate (7); the two sides of the mounting seat plate (2) are respectively folded upward and provided with corresponding mounting grooves (201) outwardly, the two sides of the printing head mounting plate (7) are respectively movably plugged into the folded portion of the mounting seat plate (2), and the corresponding printing guide roller (9) is rotatably mounted between the mounting grooves (201) through the mounting guide sleeves (8), and after the snap-fitting grooves (4) of the hook plate (301) are snapped onto the mounting guide sleeves (8) on both sides of the printing guide roller (9), the first elastic member (6) is compressed, and the printing head mounting plate (7) is lifted upward so that the printing head (702) abuts against the bottom side of the printing guide roller (9); An upper cover (10) is fixedly mounted on the upper part of the housing (1), and a corresponding paper guide (1001) is arranged on a side of the upper cover (10) facing the print head (702) and tilted downward, wherein the lower end of the paper guide (1001) faces directly between the print head (702) and the print guide roller (9); A guide roller protection cover (11) is installed to cover the outer side of the printing guide roller (9), and two sides of the guide roller protection cover (11) are respectively folded downward and fixed to the installation guide sleeve (8); The printing paper guide mechanism (12) comprises a group of guide plates (1201) arranged on both sides of the upper part of the paper guide part (1001), and a group of mounting shafts (1202) rotatable on both sides of the lower part of the paper guide part (1001), the mounting shafts (1202) are respectively fixedly connected with corresponding fixed guide wheels (1203), the upper parts of the fixed guide wheels (1203) are respectively movably mounted with corresponding clamping guide wheels (1205) upwardly through corresponding second elastic members (1204), the upper parts of the clamping guide wheels (1205) are respectively fixedly connected with iron limit plates (1206), the guide rollers Electromagnets (1207) are respectively arranged on both sides of the protective cover (11) and are located outside the corresponding iron limit plates (1206). When printing, the electromagnets (1207) are energized to form adsorption on the outside of the iron limit plates (1206), so that the inner side of the clamping guide wheel (1205) tilts downward to cooperate with the fixed guide wheel (1203) to clamp the printing paper. As the printing paper moves forward, the mounting shaft (1202) rotates, and the clamping guide wheel (1205) and the fixed guide wheel (1203) rotate accordingly, and continuously pull the printing paper outward on both sides. A driving motor (13) is fixedly connected to the housing (1) and is used to drive the printing guide roller (9) to rotate; A power supply mechanism (14) comprising a storage battery fixedly mounted in the housing (1), the drive motor (13), the print head (702), and the electromagnet (1207) being connected to the storage battery via corresponding electrical control switches (15); The upper surface of the paper guide portion (1001) is provided with a plurality of corresponding paper guide ridges (16) protruding upward at intervals, and the upper end surfaces of the fixed guide wheels (1203) are respectively located at the lower sides of the paper guide ridges (16).

2. A printer according to claim 1, characterized in that: The hook plate (301) is integrally formed with a corresponding limit plate (17) disposed outwardly, the limit plate (17) extending through to the outside of the folded portion of the mounting seat plate (2), and the upper cover (10) is provided with a button (18) that can press the limit plate (17) to separate the hook plate (301) from the mounting guide sleeve (8).

3. A printer according to claim 2, characterized in that: The electric control switch (15) is fixedly mounted on the upper cover (10) on one side of the button (18).

4. A printer according to claim 1, characterized in that: The folded parts of the guide roller protection cover (11) are respectively provided with corresponding limiting guide holes (19), and guide blocks (20) which are clamped into the limiting guide holes (19) are fixedly connected to both sides of the upper cover (10).

5. A printer according to claim 1, characterized in that: The housing (1) and the guide roller protection cover (11) are respectively provided with corresponding clearance grooves on the opposite sides thereof, and the clearance grooves provided on the housing (1) and the guide roller protection cover (11) cooperate to form a corresponding paper outlet (21).

6. A printer according to claim 5, characterized in that: The end of the clearance groove of the guide roller protective cover (11) is arranged in a sawtooth shape.

7. A printer according to claim 1, characterized in that: The printing guide roller (9) is connected to the output shaft end of the driving motor (13) by means of gear transmission.

8. A printer according to claim 1, characterized in that: The first elastic member (6) is a coil spring, and the second elastic member (1204) is an elastic rubber gasket.

9. A printer control method, based on the printer according to any one of claims 1 to 8, characterized in that: The following specific steps are included: S1, controlling the print head (702) through the electrical control switch (15) to start a printing operation, and at the same time, starting the drive motor (13) to drive the print guide roller (9) to rotate, thereby driving the print paper through the print head (702) to perform a printing operation; S2, control the electromagnet (1207) to be energized to form adsorption on the outer side of the iron limit plate (1206), so that the inner side of the clamping guide wheel (1205) tilts downward to cooperate with the fixed guide wheel (1203) to clamp the printing paper. As the printing paper moves forward, the mounting shaft (1202) rotates, and the clamping guide wheel (1205) and the fixed guide wheel (1203) rotate accordingly, and continue to pull the printing paper outward on both sides.

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