CN112428695B

CN112428695B - Portable precision printing head

Info

Publication number: CN112428695B
Application number: CN202011326146.7A
Authority: CN
Inventors: 唐锋; 张锋洛
Original assignee: Zhuhai Zhengxin Electronic Science & Technology Co ltd
Current assignee: Zhuhai Xinye Electronic Technology Co Ltd
Priority date: 2020-11-24
Filing date: 2020-11-24
Publication date: 2022-01-11
Anticipated expiration: 2040-11-24
Also published as: CN112428695A

Abstract

The invention discloses a portable precision printing head, comprising: the core body frame, the temperature sensing subassembly, rubber roll subassembly and cut paper subassembly, the cut paper subassembly includes first motor, first gear, the second gear, third gear and cutter, first motor is installed in the core body frame, first gear is fixed in first motor output, second gear and first gear drive are connected, second gear and third gear mesh mutually, the second gear, eccentric setting fixture block on the third gear terminal surface, establish on the cutter with fixture block matched with draw-in groove, first motor during operation drives first gear and second gear rotation, realize the paper through the reciprocal straight line activity of fixture block and draw-in groove sliding fit drive cutter and cut off. The double-gear driving structure is simpler, the requirement on installation space is reduced, the size of the printing head is reduced, the cutter is driven to move through the sliding fit of the clamping block and the clamping groove in the cutter when the gear rotates, the stepping motor is stronger in power, accurate in advancing, rapid in paper cutting, and beneficial to more stable paper feeding and efficiency improvement.

Description

Portable precision printing head

Technical Field

The invention belongs to the technical field of printing equipment, and particularly relates to a portable precision printing head.

Background

Printers are one of the output devices of computers for printing the results of computer processing on relevant media, and existing printers are broadly classified into inkjet printers, laser printers, etc. that print characters and patterns on paper or other media in computers.

The printer goes out the first part and is beaten the head, and the paper passes through the roller and the rendition forms pattern or characters on the paper, and automatic cut paper accomplishes the printing process afterwards, and the design that beats the head is especially important, and the job reliability is whether to concern stability and quality of printing, and the better beat continuous normal operating of the better beat of stationarity during operation, and the relatively poor beat of stationarity is easy to break down at the during operation, need stop work when breaking down and look for the reason, and printing efficiency receives serious influence.

The paper cutting is the last process after printing, paper is output after the paper cutting, and the common paper cutting on the market drives a cutter through a worm gear, so that although the paper cutting is quick, the requirement on installation space is large, the volume and the mass of a printing head are inevitably increased, the block head is heavy, and the miniaturization and precision cannot be realized; moreover, the driving precision of the direct current motor is poor, the power is low, the phenomenon that paper is not cut due to insufficient paper cutting force to cause paper to be continuous or jammed easily occurs, and the working efficiency of the printing head is influenced.

Disclosure of Invention

In order to solve the existing problems in the background art, the invention provides a portable precision printing head, wherein double gears are driven by a direct current stepping motor to control a cutter to cut paper, the structure is simple, the size of the printing head is effectively reduced, the small precision is realized, the driving power of the stepping motor is strong, the paper cutting efficiency and the paper feeding stability are improved, the faults of the printing head are reduced, and the efficiency is improved.

The invention adopts the following technical scheme:

a portable precision printhead comprising: the paper cutting machine comprises a machine core main frame, a heat sensitive assembly, a glue roller assembly and a paper cutting assembly, wherein the heat sensitive assembly is detachably arranged in the machine core main frame, the glue roller assembly is detachably arranged at the side part of the machine core main frame, the glue roller assembly and the heat sensitive assembly are oppositely arranged, a paper feeding channel for paper to pass through for printing is formed between the glue roller assembly and the heat sensitive assembly, the paper cutting assembly is arranged at the top of the machine core main frame, paper passes through a paper outlet channel formed between the paper cutting assembly and the glue roller assembly, the paper cutting assembly comprises a first motor, a first gear, a second gear, a third gear and a cutter, the first motor is arranged in the machine core main frame, the output end of the first motor stretches out of the top of the machine core main frame, the first gear is fixed at the output end of the first motor, the second gear is in driving connection with the first gear, the second gear is meshed with the third gear, and a clamping block is eccentrically arranged on the end faces of the second gear and the third gear, the paper cutting machine is characterized in that the cutter is provided with a clamping groove matched with the clamping block, the first motor drives the first gear and the second gear to rotate when working, and the paper is cut off by the reciprocating linear movement of the cutter close to or far away from the paper under the driving of the sliding fit of the clamping block and the clamping groove.

Preferably, the paper cutting assembly further comprises a cutter elastic sheet and a cutter cover, the cutter cover is located above the cutter and covered on the machine core main frame, the cutter elastic sheet is installed on the cutter cover, a presser foot arranged at the front end of the cutter elastic sheet penetrates through the cutter cover to elastically press the cutter, and the cutter is restrained in the direction perpendicular to the movement direction of the cutter.

Preferably, the paper cutting assembly further comprises a fourth gear and a fifth gear, and the fourth gear and the fifth gear are respectively meshed with and driven by the first gear and the second gear.

Preferably, the rubber roller assembly comprises a rubber roller and a rubber roller support, the rubber roller support is clamped and installed on the side of the machine core main frame, the rubber roller is rotatably arranged in the rubber roller support, two ends of the rubber roller extend out of the machine core main frame, and a sixth gear is fixed to one end of the rubber roller.

Preferably, a second motor is fixedly mounted on one side inside the machine core main frame, a seventh gear fixed to the output end of the second motor is sequentially meshed with, driven and mounted on an eighth gear and a ninth gear of the side portion of the machine core main frame, the ninth gear and the sixth gear are meshed with each other, and zinc alloy end covers are mounted on two sides of the machine core main frame.

Preferably, the temperature sensing subassembly includes temperature sensing support and dabber, the dabber passes the temperature sensing support and fixes it in the core body frame, just fixed temperature sensing piece on the temperature sensing support with the rubber roll sets up relatively, dabber both ends cover is equipped with the dabber torsional spring, dabber torsional spring location joint is in the core body frame and between the buckle that the core body support both ends set up, be provided with temperature sensing piece spring between temperature sensing support back and the core body frame.

Preferably, beat printer head and still include unblock plectrum, tenth gear and carrier, unblock plectrum bottom is equipped with the plectrum torsional spring and rotates and set up on the core body frame, just it stretches out to have the handle on the unblock plectrum the cutter lid is outside, the carrier cover is established third gear bottom, tenth gear cover is located on the gear post of carrier, tenth gear and third gear, unblock plectrum mesh mutually, still be equipped with the reset torsion spring on the core body frame, the terminal joint of reset torsion spring is in the carrier lateral part.

Preferably, the fixture block is sleeved with a stainless steel sheath.

Preferably, the first motor and the second motor are both stepping motors.

The invention has the following beneficial effects:

the cutter in the printing head is driven by the stepping motor to drive the cutter to walk to cut paper, compared with the traditional worm gear mode, the double-gear driving structure is simpler, the gear with the smaller diameter is adopted, the requirement on installation space is reduced, the size of the printing head is reduced, the printing head with the smaller size is designed to be the same and universal, the clamping block is arranged at the eccentric position on the gear surface of the double-gear, the cutter is driven to move by the sliding fit of the clamping block and the clamping groove in the cutter when the gear rotates, the stepping motor has stronger power, the running is accurate, the paper cutting is rapid, the paper feeding is more stable, and the efficiency is improved.

The unblock plectrum is installed under the cutter, takes place the card paper back during the cut paper, thereby stirs the handle and drives double gear rotation and keep away from the cut paper direction with the cutter, removes the phenomenon of card paper, and the unblock plectrum design is simple, solves the card paper through simple control fast, and is simple to use reliable.

When the printing head operates, the rubber roller rotates to work, the rubber roller is driven by the gear set outside the main frame of the machine core, the end cover is arranged outside the gear, the end cover is made of zinc alloy, the strength and the wear resistance are enhanced, and the service life is prolonged.

The cutter passes through fixture block sliding fit control linear motion on draw-in groove and the double gear, and the outside cover of fixture block is established the sliding wear volume that the stainless steel sheath reduced fixture block and draw-in groove, and increase of service life keeps the accurate cut paper of cutter.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a portable precision printhead according to the present invention;

FIG. 2 is a schematic diagram of the exploded structure of FIG. 1;

FIG. 3 is a schematic diagram of a portable precision printhead with the cutter, the cutter spring, and the cutter cover removed;

FIG. 4 is an exploded view of FIG. 3;

fig. 5 is another view of fig. 4.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention.

Referring to fig. 1-5, the portable precision print head designed by the invention comprises a main frame 1 of a cassette mechanism, a heat-sensitive assembly, a glue roller assembly and a paper cutting assembly, wherein, the heat-sensitive component is detachably arranged in the machine core main frame 1, the rubber roller component is detachably arranged at the side part of the machine core main frame 1, the rubber roller component and the heat-sensitive component are oppositely arranged and form a paper feed channel 2 for paper 3 to pass through for printing, the paper cutting assembly is arranged at the top of the machine core main frame 1, paper 3 penetrates out of a paper outlet channel 4 formed between the paper cutting assembly and the rubber roller assembly, during printing, the paper 3 enters from the paper feeding channel 2 and then passes through the rubber roller component and the heat sensitive component to complete printing, the paper 3 is output from the paper output channel 4 after the paper cutting component cuts, in this process, the paper cutting assembly is very important, and the efficiency of work can be improved by completing the paper cutting step quickly and accurately.

First, as shown in fig. 2, the cutting assembly includes a first motor 5, a first gear 6, a second gear 7, a third gear 8, a fourth gear 9, a fifth gear 10, a cutter 11, a cutter spring 12, and a cutter cover 13.

Wherein, the first motor 5 is installed in the main frame 1, the output end of the first motor 5 extends out of the top of the main frame 1, the first gear 6 is fixed at the output end of the first motor 5, the second gear 7 is in driving connection with the first gear 6, the second gear 7 is meshed with the third gear 8, the fourth gear 9 and the fifth gear 10 are respectively meshed with the first gear 6 and the second gear 7 for driving, the end surfaces of the second gear 7 and the third gear 8 are eccentrically provided with a clamping block 14, the cutter 11 is provided with a clamping groove 15 matched with the clamping block 14, the first motor 5 drives the first gear 6 and the second gear 7 to rotate when working, the position of the clamping block 14 changes in the rotating process and is in sliding fit in the clamping groove 15, so as to drive the cutter 11 to close to or far away from the reciprocating linear motion of the paper 3 to cut off the paper 3, referring to fig. 3, the stainless steel sheath 16 is sleeved on the fixture block 14, so that abrasion of the fixture block 14 and the clamping groove 15 during sliding is reduced, and durability is enhanced; it can be seen that the movable distance of the cutter 11 can be changed by changing the sizes of the first gear 6 and the second gear 7 and the distance between the clamping block 14 and the axis, the structure and the transmission design are relatively simple, the installation space is limited to be small, the design requirements of small size and precision can be realized more compared with the traditional worm and gear drive design, the transmission between the gears is more accurate, and the paper cutting quality is improved.

In view of the above, as shown in fig. 2, the cutter cover 13 is located above the cutter 11 and covers the main frame 1 of the movement, the cutter elastic piece 12 is mounted on the cutter cover 13, and the presser foot 17 provided at the front end of the cutter elastic piece 12 penetrates through the cutter cover 13 to elastically press the cutter 11, so as to restrain the cutter in the direction perpendicular to the movement direction of the cutter 11.

Secondly, the rubber roller component comprises a rubber roller 18 and a rubber roller support 19, the rubber roller support 19 is installed on the side portion of the machine core main frame 1 in a clamping mode, the rubber roller 18 is rotatably arranged in the rubber roller support 19, two ends of the rubber roller extend out of the machine core main frame 1, a sixth gear 20 is fixed at one end of the rubber roller, a second motor 21 is fixedly installed on one side inside the machine core main frame 1, a seventh gear 22 fixed on the output end of the second motor 21 is sequentially meshed with an eighth gear 23 and a ninth gear 24 which are installed on the side portion of the machine core main frame 1 in a driving mode, the ninth gear 24 is meshed with the sixth gear 20, therefore, the rubber roller 18 is finally driven to rotate by the second motor 21 to print, zinc alloy end covers 25 are installed on two sides of the machine core main frame 1, and the rotating process of the rubber roller 18 needs to be driven by the sixth gear 20, the seventh gear 22, the eighth gear 23 and the ninth gear 24, the end cover 25 is not required to be abraded during working, and the end cover 25 in the embodiment is preferably made of zinc alloy to replace the traditional plastic material, so that the strength of the gear is higher, the abrasion resistance is enhanced, and the service life is prolonged.

Then, as shown in fig. 5, the thermosensitive assembly includes a thermosensitive support 26 and a mandrel 27, the mandrel 27 passes through the thermosensitive support 26 to fix the thermosensitive support in the machine core main frame 1, a thermosensitive plate 28 is fixed on the thermosensitive support 26 and is arranged opposite to the rubber roller 18, the paper 3 passes through between the thermosensitive plate 28 and the rubber roller 18, mandrel torsion springs 29 are further sleeved at two ends of the mandrel 27, the mandrel torsion springs 29 are positioned and clamped in the machine core main frame 1 and between the fasteners 30 arranged at two ends of the machine core support 1, the mandrel torsion springs 29 and the fasteners 30 fix the mandrel 27 in the machine core main frame 1, when in detachment, the mandrel torsion springs 29 are taken down after the fasteners 30 are rotated, so that the mandrel 27 can be easily detached, and the detachment is convenient; meanwhile, a thermosensitive plate spring 31 is arranged between the back of the thermosensitive support 26 and the main movement frame 1, so that the thermosensitive support 26 has certain elastic flexibility relative to the main movement frame 1, and the stability of paper feeding in the printing process is maintained.

In addition, the print head may also have a paper jam phenomenon during the paper feeding process, the conventional solution generally pulls out the paper 3, and in case that the paper 3 is too tight, the print head needs to be disassembled, which is very troublesome and inconvenient, and has an extremely low efficiency, so, as shown in fig. 4, the print head in this embodiment further includes an unlocking plectrum 32, a tenth gear 33, and a gear rack 34, the bottom of the unlocking plectrum 32 is provided with a plectrum torsion spring 35 and is rotatably disposed on the machine core main frame 1, the unlocking plectrum 32 is provided with a handle 36 extending out of the cutter cover 13, the gear rack 34 is sleeved on the bottom of the third gear 8, the tenth gear 33 is sleeved on a gear post of the gear rack 34, the tenth gear 33 is engaged with the third gear 8 and the unlocking plectrum 32, the machine core main frame 1 is further provided with a reset torsion spring 37, the tail end of the reset torsion spring 37 is clamped on a side portion of the gear rack 34, after the paper jam occurs, the printing head does not need to be disassembled, the handle 36 is slightly pulled by hand, the tenth gear 33 is driven to rotate by meshing the outer side of the unlocking poking knife 32, the tenth gear 33 drives the third gear 8 to rotate through the gear carrier 34, the cutter 11 retracts, the paper 3 is loosened, the paper jam phenomenon is solved, after the handle 36 is loosened, the unlocking poking knife 32 and the gear carrier 34 automatically reset under the rebounding of the poking knife torsion spring 35 and the reset torsion spring 37 respectively, and the paper jam is very convenient and fast to use.

Finally, first motor 5 and second motor 21 are step motor, and the tradition adopts the direct current motor drive, and step motor power reaches that the equal moment of direct current motor requires current little, and is more energy-conserving, has reduced simultaneously and has generated heat, and life-span is prolonged, and the driving method is different, advances more accurately, cuts off paper 3 rapidly, is favorable to the smoothness nature that paper 3 carried.

The invention has the advantages that:

When the printing head operates, the rubber roller rotates to work, the rubber roller is driven by the gear set outside the main frame of the machine core, the end cover is arranged outside the gear, the end cover is made of zinc alloy, the strength and the wear resistance are improved, and the service life is prolonged.

It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of or equivalence to the invention are intended to be embraced therein.

Claims

1. A portable precision printhead, comprising: the paper cutting machine comprises a machine core main frame, a heat sensitive assembly, a glue roller assembly and a paper cutting assembly, wherein the heat sensitive assembly is detachably arranged in the machine core main frame, the glue roller assembly is detachably arranged at the side part of the machine core main frame, the glue roller assembly and the heat sensitive assembly are oppositely arranged, a paper feeding channel for paper to pass through for printing is formed between the glue roller assembly and the heat sensitive assembly, the paper cutting assembly is arranged at the top of the machine core main frame, paper passes through a paper outlet channel formed between the paper cutting assembly and the glue roller assembly, the paper cutting assembly comprises a first motor, a first gear, a second gear, a third gear and a cutter, the first motor is arranged in the machine core main frame, the output end of the first motor stretches out of the top of the machine core main frame, the first gear is fixed at the output end of the first motor, the second gear is in driving connection with the first gear, the second gear is meshed with the third gear, and a clamping block is eccentrically arranged on the end faces of the second gear and the third gear, the cutting knife is provided with a clamping groove matched with the clamping block, the first motor drives the first gear and the second gear to rotate when working, and the reciprocating linear motion of the cutting knife close to or far away from paper is driven through the sliding fit of the clamping block and the clamping groove to cut off the paper; still dial sword, tenth gear and gear carrier including the unblock, unblock group sword bottom is equipped with dials the sword torsional spring and rotates and set up on the core body frame, just it stretches out to have the handle on the unblock group sword cutter lid is outside, the gear carrier cover is established third gear bottom, tenth gear cover is located on the gear post of gear carrier, tenth gear and third gear, unblock group sword mesh mutually, still be equipped with the reset torsion spring on the core body frame, the terminal joint of reset torsion spring is in the gear carrier lateral part.

2. The portable precision printing head according to claim 1, wherein the cutting assembly further comprises a cutter spring and a cutter cover, the cutter cover is located above the cutter and covered on the main frame of the movement, the cutter spring is mounted on the cutter cover, and a presser foot provided at a front end of the cutter spring elastically presses the cutter through the cutter cover to restrain the cutter in a direction perpendicular to a movement direction of the cutter.

3. The portable precision printhead of claim 2 wherein the cutting assembly further comprises a fourth gear and a fifth gear, the fourth gear and the fifth gear being in meshing engagement with the first gear and the second gear, respectively.

4. The portable precision printing head according to claim 3, wherein the rubber roller assembly comprises a rubber roller and a rubber roller bracket, the rubber roller bracket is clamped and mounted on the side part of the main movement frame, the rubber roller is rotatably arranged in the rubber roller bracket, two ends of the rubber roller extend out of the main movement frame, and a sixth gear is fixed at one end of the rubber roller bracket.

5. The portable precision printing head according to claim 4, wherein a second motor is fixedly installed on one side inside the main movement frame, a seventh gear fixed on an output end of the second motor is sequentially meshed with an eighth gear and a ninth gear which are installed on a side portion of the main movement frame in a driving manner, the ninth gear and the sixth gear are meshed with each other, and end covers made of zinc alloy are installed on two sides of the main movement frame.

6. The portable precision printing head according to claim 5, wherein the thermal sensitive component comprises a thermal sensitive support and a mandrel, the mandrel passes through the thermal sensitive support to fix the thermal sensitive support in the main frame of the movement, the thermal sensitive support fixes a thermal sensitive sheet and the rubber roller is arranged oppositely, a mandrel torsion spring is sleeved at two ends of the mandrel, the mandrel torsion spring is positioned and clamped in the main frame of the movement and between the buckles arranged at two ends of the movement support, and a thermal sensitive sheet spring is arranged between the back of the thermal sensitive support and the main frame of the movement.

7. The portable precision printhead of claim 1, wherein said fixture block is covered with a stainless steel sheath.

8. A portable precision printhead according to any one of claims 1 to 5 wherein said first and second motors are stepper motors.