CN102225665B - Printing apparatus possessing balance type temperature-sensitive head - Google Patents
Printing apparatus possessing balance type temperature-sensitive head Download PDFInfo
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- CN102225665B CN102225665B CN 201110110699 CN201110110699A CN102225665B CN 102225665 B CN102225665 B CN 102225665B CN 201110110699 CN201110110699 CN 201110110699 CN 201110110699 A CN201110110699 A CN 201110110699A CN 102225665 B CN102225665 B CN 102225665B
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Abstract
Provided is a printing apparatus which possesses a balance type temperature-sensitive head. The apparatus comprises a lower casing assembly with a recessed middle part, a printing assembly, an upper casing assembly and a printing door. The printing door is provided with a plastic roller. The mounting base of the printing assembly is fixed on a fixed plate. The temperature-sensitive head is movably connected to a mount and the mount is hinged to the mounting base. The printing assembly also comprises an elastic balance mechanism used to balance the temperature-sensitive head and the elastic balance mechanism is arranged between the mount and the temperature-sensitive head. According to the technical scheme provided in the invention, the paper feed of the printing apparatus is smoother and the problem of printing turning lighter is avoided when the printing apparatus is used for a long time.
Description
Technical field
The present invention relates to printing equipment, particularly a kind of thermal head printing equipment that is applied on medical equipment.
Background technology
Because the thermal head printing technique has that print speed is fast, print resolution is high, font is clear, long service life, noise is low and the characteristics such as non-maintaining.Thereby, extensively used by each field institute, particularly use more extensive at medical instruments field, for example, when people arrived Hospital Physical Examination, the doctor need to use the thermal printing apparatus on Medical Devices, print waveform and come diagnostic analysis, judge examinee's physical condition with this, as seen, the utilization of printing equipment in medical field also plays a part very important.The thermal printing apparatus of using on market at present, because thermal head can not remain in the same horizontal line with rubber-surfaced roll, also be difficult to the pressure that remains constant, in use for some time, will occur printing light and print paper jam phenomenon, the reliability of product is reduced, and also be unfavorable for operation, brought great puzzlement and trouble to operating personnel.
Summary of the invention
The invention provides a kind of printing equipment, adopt self balancing thermal printing head, and in conjunction with corresponding structural design, solve in prior art paperboard and print thin out technical problem.
The present invention comprises umbilicate lower shell component for this printing equipment that provides is provided, be arranged at the print components in described lower shell component intermediate recess space, fasten with described lower shell component the upper shell component of assembling, described upper shell component has an opening, described print components partly is exposed in this opening, also comprise the printing door that is hinged on described upper shell component, described printing door fastens the opening of the described upper shell component of sealing; Described printing door is provided with a rubber-surfaced roll, described print components comprises fixed head, holder, fixed mount, thermal head, described holder is fixed on described fixed head, thermal head is flexibly connected fixed mount, fixed mount and holder are hinged, print components also includes the elastic equilibrium mechanism for the balance thermal head, and this elastic equilibrium mechanism is arranged between fixed mount and thermal head.The present invention adds flexible balance device between thermal head and fixed mount, make and remain at the same level line between thermal head and rubber-surfaced roll, and remain suitable printing distance, thus solved the printing paper walking process in the uneven problem of pressure, guarantee in print procedure not paperboard.
Further improvement of the present invention is: described fixed mount is step-like tabular component, the top layer tread of described stairstepping fixed mount is provided with two waist holes, stop screw is fixed on described thermal head under this top layer tread by above-mentioned two waist holes, described thermal head slides along the long axis direction in above-mentioned two waist holes, and described elastic equilibrium mechanism is arranged between the riser and thermal head of this stairstepping fixed mount.The present invention keeps the activity of thermal head freely, is provided with the waist hole of certain move place in the fixed position, is convenient to the thermal head automatic adjusting position.
Of the present invention further the improvement again is: be installed with the cantilever stator on the bottom tread of described stairstepping fixed mount, this cantilever stator two ends bending downwards protrudes from the lower surface of described bottom tread, this cantilever stator two ends respectively are provided with a fixing hole, and fixed bar passes above-mentioned two fixing holes, and described holder and fixed mount is hinged; Be provided with the first back-moving spring between described holder and fixed mount bottom tread, described cantilever stator is arranged between the first back-moving spring and fixed mount riser.The present invention adopts cantilever design to add the mode of back-moving spring, and the vertical range of adjustment thermal head and rubber-surfaced roll makes moderate pressure between the two, and can keep for a long time constant pressure, solves paperboard and prints thin out problem.
Of the present invention further the improvement is: described elastic equilibrium mechanism is the fork-shaped shell fragment, and two jaws of this fork-shaped shell fragment are against on described thermal head, and fork-tail is fixed on the riser of described fixed mount.Described fork-shaped shell fragment is one, and the fork-tail of this fork-shaped shell fragment is fixed on the centre position of described fixed mount riser, and two jaws of this fork-shaped shell fragment are partly for being symmetrical arranged.Perhaps described fork-shaped shell fragment is at least two, and this fork-shaped shell fragment of at least two is arranged symmetrically with along fixed mount riser medium line.In technical scheme of the present invention, elastic equilibrium mechanism adopts Compress Spring, for example: coil spring and spring leaf, if employing coil spring, be necessary for plural coil spring, could keep pressure balance like this, simultaneously, the parameter that also will guarantee each spring is identical or approaching, is conducive to keep isostasy.Adopt the spring leaf of fork-shaped more suitable, because the application point of fork-shaped spring is wider, and left and right fork pressure ratio is average, is conducive to pressure balance, and for the present invention, the fork-shaped spring is preferred version of the present invention.
Of the present invention further the improvement is: the thread root of described stop screw is provided with the round platform that protrudes from the screw rod outer round surface, and the diameter of this round platform guarantees to be held by above-mentioned waist hole.This programme be for the activity that makes thermal head more freely, avoid the phenomenon of clamping stagnation to occur.
Of the present invention further the improvement is: extend outward boss at the printing door on described fixed mount direction, two place's peaks of this boss upper surface are in same level, described boss is two, and the peak of these two boss upper surfaces is in same level.Adopt the scheme of boss location in the present invention, be used for the initial installment state of location fixed mount, thereby guarantee parallel between thermal head and rubber-surfaced roll, guarantee paperboard and print evenly.
The present invention adopts above-mentioned technical scheme, makes this printing equipment paper feed more smooth and easy, and when using for a long time, also can not print thin out problem.
Description of drawings
Accompanying drawing 1 is the decomposing schematic representation of the embodiment of the present invention;
Accompanying drawing 2 is embodiment of the present invention installation schematic diagram;
Accompanying drawing 3 is embodiment of the present invention cross-sectional schematic C-C;
Accompanying drawing 4 amplifies for the embodiment of the present invention is local looks schematic diagram X;
Accompanying drawing 5 is the decomposing schematic representation of embodiment of the present invention paper storehouse assembly;
Accompanying drawing 6 is printed the decomposing schematic representation of door assembly for the embodiment of the present invention;
Accompanying drawing 7 is looked schematic diagram for the master of embodiment of the present invention paper storehouse assembly;
Accompanying drawing 8 is the cross-sectional schematic A-A of embodiment of the present invention paper storehouse assembly;
Accompanying drawing 9 amplifies for the embodiment of the present invention is local looks schematic diagram Y;
Accompanying drawing 10 is embodiment of the present invention fixed mount stereopsis schematic diagram;
Accompanying drawing 11 is printed door stereopsis schematic diagram for the embodiment of the present invention;
Accompanying drawing 12 is embodiment of the present invention stop screw stereopsis schematic diagram.
The specific embodiment
Describe specific embodiments of the invention in detail in conjunction with above-mentioned accompanying drawing 1-12.
The technical scheme that the present invention solves key technical problem is: print door 11, upper shell component 12, paper storehouse 13, lower shell component 14, stop screw 15, fixed mount 16, thermal head 17, the first back-moving spring 18, jump ring 19, fixed bar 20, holder 21, locking cap 22, fixed head 23, gear-box 24, swingle 25, buckle 26, gear paper bar 27, rubber-surfaced roll 28, bearing 29, snap close 30, the second back-moving spring 31, gear 32; Above Component composition forms a kind of medical thermal printer structure (as shown in accompanying drawing 1 to 9) together.
This medical printer structure, implementation is to be applied on medical diagnostic device.Its structural member feature description: printing door 11 dual-sides are provided with two small through hole 111 and are used for fixedly swingle 25, the inboard is provided with a liftout attachment 112, the place ahead is provided with another group through hole 113 for fixed stop paper bar 27 again, on it, aspect is provided with a C type opening 114 for rigid bearing 29, it is also for rigid bearing 29 that the corresponding other end arranges circular hole 115, be provided with two little muscle positions 116 printing door 11 fronts, print a two ends two small lugs 117 are set, this projection designs in the same horizontal line, and its effect is balance fixed mount 16; Upper shell component 12 1 ends arrange an open slot 121, and this open slot is used for placing the printing door assembly; Be provided with double-screw bolt in lower shell component 14, be used for fixedly paper storehouse assembly; One boss 151 is set on stop screw 15; Fixed mount 16 external forms are Z-shaped, be provided with this waist hole, one group of waist hole 161 on it and be used for placing stop screw 15, be provided with two fork-shaped shell fragments, 162 these shell fragments on madial wall and be used for balance thermal head 17, the centre arranges one group of cantilever stator 163, which is provided with two through hole 164 these through holes and is connected with holder 21; One group of shrinkage pool 211 is set on holder 21, is used for placing the first back-moving spring 18, dual-side arranges one group of through hole 212 and by fixed bar 20, fixed mount 16 is installed.
Assembling mode: first paper storehouse assembly is put into lower shell component 14 and is screwed, building shell component 12 also is fixed with screw again, pack in upper shell component open slot 121 printing door assembly at last, this structure installation (as shown in Figure 2).paper storehouse component assembling mode (as shown in Figure 5): be placed in thermal head 17 on fixed mount 16 and make fork-shaped shell fragment 162 stressed, with two stop screws 15, thermal head 17 being fixed, the boss 151 that arranges on stop screw 15 is placed in waist hole 161, on holder 21, set one group of shrinkage pool 211 is put into respectively the first back-moving spring 18, the fixed mount 16 that thermal head 17 is housed is put on holder 21, make and which is provided with one group of through hole 212 that two through hole 164 is aimed on holder 21, penetrate fixed bar 20 in this through hole, load onto respectively jump ring 19 at fixed bar 20 two ends, fixed head 23 locks on holder 21 from the negative, after thermal head 17 and other structural member will be housed fixed head 23 be put on paper storehouse 13, putting locking cap 22 use screws locks, at last gear-box 24 is locked in paper storehouse 13 sides, it is paper storehouse assembly installation (as shown in Figure 1).Print door assembly mounting means (as shown in Figure 6): swingle 25 penetrates into printing door 11 dual-sides and is provided with in two small through hole 111, lock respectively buckle 26 at two ends, the second back-moving spring 31 is put on snap close 30, and is placed in printing door 11, with screw, it is locked on swingle 25; Overlap respectively upper bearing (metal) 29 at rubber-surfaced roll 28 two ends, rubber-surfaced roll 28 1 ends that rear handle installs bearing 29 penetrate in circular hole 115, the other end snaps onto in C type opening 114, at circular hole 115 ends, gear 32 is placed in rubber-surfaced roll 28 and is screwed, at last gear paper bar 27 is encased in through hole 113, namely prints door assembly installation (as shown in Figure 1).
printer arrangement of the present invention for existing medical apparatus and instruments in actual use, the problem of existence is improved, namely be provided with fixed mount 16 and which is provided with waist hole 161 in the print structure of this medical equipment, fork-shaped shell fragment 162, cantilever stator 163, stop screw 15 fixedly passes waist hole 161 thermal head 17 is fixed, and fork-shaped shell fragment 162 is stressed, make thermal head 17 left and right balances, cantilever stator 163 installs on holder 21 by fixed bar 20, be encased in upper shell component open slot 121 when interior when printing door assembly, rubber-surfaced roll 28 promote thermal heads 17 and stop screw 15 backward mobile 1.0mm to the distance of 2mm, its moving position is in waist hole 161, thermal head 17 left and right directions are close to rubber-surfaced roll 28, above-below direction is under the effect of cantilever stator 163 and the first back-moving spring 18, also be close to rubber-surfaced roll 28, thereby guaranteed that thermal head 17 remains on the same level line with rubber-surfaced roll 28 all the time, thereby avoided the generation of paper jam phenomenon in the print procedure.
Be provided with two little muscle position 116 its effects and be printing door 11 fronts, in the process of printing, printing paper is raised, make the printing paper activity more smooth and easy.
If the user is when changing printing paper, when pulling out the initial print page of printing paper, the printing door assembly has been put partially and installed to this type face, actuating motor begins to print, rubber-surfaced roll 28 is paper feed under the promotion of motor, and gear paper bar 27 is pressed on printing paper in paper storehouse 13, makes to print along paper storehouse 13 sidewalls to promote, can place restrictions on like this printing paper again toward inclined to one side on one side, and thermal head 17 remains on the same level line with rubber-surfaced roll 28 all the time, and after printer was printed two to three pages of paper, its printing paper can be adjusted to the normal position automatically.
Of paramount importance is to print 11 two ends two small lugs 117 are set.Under the more abominable condition of environment or very long one-period when not stopping using, because thermal head 17 materials are aluminium alloy, material expands and causes the writing waveform that prints partially light when this printing equipment.Print partially light phenomenon in order thoroughly to solve, print door 11 two ends and two small lugs 117 are set just show out its effect, because two projections 117 designs in the same horizontal line, be encased in mouthful groove 121 when interior when printing, just fixed mount 16 is blocked, it is kept in the same horizontal line; One group of waist hole 161 is set on fixed mount 16, its stop screw 15 passes this waist hole 161 thermal head 17 is fixed, stop screw 15 is provided with a boss 151, boss 151 by fork-shaped shell fragment 162 promote thermal heads 17 can waist hole 161 move forward and backward, install print door assembly after, rubber-surfaced roll 28 is close to thermal head 17, and makes it move 1mm-2mm after waist hole 161 is interior, by the active force of fork-shaped shell fragment 162, thermal head 17 be close to all the time rubber-surfaced roll 28 and with its maintenance same level line; When expanding because of thermal head 17 materials, the first back-moving spring 18 and cantilever stator 163 can be assisted the position of its thermal head 17 and rubber-surfaced roll 28 above-below directions, are also to adjust to the same level line; Thereby well solved the light problem of printing.Boss on printing door during to pusher, can make thermal head and rubber roll can not paste too tightly rubber roll, reduces the load of the interior motor of roller box in age, thereby makes the rubber roll activity more smooth and easy, guarantees that its printing is also more smooth and easy.
Above content is in conjunction with concrete preferred embodiment further description made for the present invention, can not assert that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (9)
1. printing equipment with balance type temperature-sensitive head, comprise umbilicate lower shell component, be arranged at the print components in described lower shell component intermediate recess space, fasten with described lower shell component the upper shell component of assembling, described upper shell component has an opening, also comprise the printing door that is hinged on described upper shell component, described printing door fastens the opening of the described upper shell component of sealing; It is characterized in that: described printing door is provided with a rubber-surfaced roll, described print components comprises fixed head, holder, fixed mount, thermal head, described holder is fixed on described fixed head, thermal head is flexibly connected fixed mount, fixed mount and holder are hinged, print components also includes the elastic equilibrium mechanism for the balance thermal head, this elastic equilibrium mechanism is the fork-shaped shell fragment, this fork-shaped shell fragment is arranged on the fixed mount madial wall, and between fixed mount and thermal head, this fork-shaped shell fragment is used for the balance thermal head.
2. has according to claim 1 the printing equipment of balance type temperature-sensitive head, it is characterized in that: described fixed mount is step-like tabular component, the top layer tread of described stairstepping fixed mount is provided with two waist holes, stop screw is fixed on described thermal head under this top layer tread by above-mentioned two waist holes, described thermal head slides along the long axis direction in above-mentioned two waist holes, and described elastic equilibrium mechanism is arranged between the riser and thermal head of this stairstepping fixed mount.
3. has according to claim 2 the printing equipment of balance type temperature-sensitive head, it is characterized in that: be installed with the cantilever stator on the bottom tread of described stairstepping fixed mount, this cantilever stator two ends bending downwards protrudes from the lower surface of described bottom tread, this cantilever stator two ends respectively are provided with a fixing hole, and fixed bar passes above-mentioned two fixing holes, and described holder and fixed mount is hinged.
4. have according to claim 3 the printing equipment of balance type temperature-sensitive head, it is characterized in that: be provided with the first back-moving spring between described holder and fixed mount bottom tread, described cantilever stator is arranged between the first back-moving spring and fixed mount riser.
5. has according to claim 1 the printing equipment of balance type temperature-sensitive head, it is characterized in that: described fork-shaped shell fragment is one, the fork-tail of this fork-shaped shell fragment is fixed on the centre position of described fixed mount riser, and two jaws of this fork-shaped shell fragment are partly for being symmetrical arranged.
6. have according to claim 1 the printing equipment of balance type temperature-sensitive head, it is characterized in that: described fork-shaped shell fragment is at least two, and this fork-shaped shell fragment of at least two is arranged symmetrically with along fixed mount riser medium line.
7. the described printing equipment with balance type temperature-sensitive head of any one according to claim 2 to 4, it is characterized in that: the thread root of described stop screw is provided with the round platform that protrudes from the screw rod outer round surface, and the diameter of this round platform guarantees to be held by above-mentioned waist hole.
8. have according to claim 1 the printing equipment of balance type temperature-sensitive head, it is characterized in that: extend outward projection on the printing door on described fixed mount direction, two place's peaks of this projection upper surface are in same level.
9. have according to claim 8 the printing equipment of balance type temperature-sensitive head, it is characterized in that: described projection is two, and the peak of these two projection upper surfaces is in same level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110110699 CN102225665B (en) | 2011-04-29 | 2011-04-29 | Printing apparatus possessing balance type temperature-sensitive head |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110110699 CN102225665B (en) | 2011-04-29 | 2011-04-29 | Printing apparatus possessing balance type temperature-sensitive head |
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| CN102225665A CN102225665A (en) | 2011-10-26 |
| CN102225665B true CN102225665B (en) | 2013-06-12 |
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| CN 201110110699 Active CN102225665B (en) | 2011-04-29 | 2011-04-29 | Printing apparatus possessing balance type temperature-sensitive head |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105711273B (en) * | 2016-03-11 | 2018-02-02 | 武汉中旗生物医疗电子有限公司 | It is segmented spring-piece type self-regulation print structure |
| JP6904771B2 (en) * | 2017-04-26 | 2021-07-21 | セイコーインスツル株式会社 | Thermal printers and portable terminals |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2825716B2 (en) * | 1992-10-16 | 1998-11-18 | シャープ株式会社 | Thermal printing mechanism |
| JP2002283631A (en) * | 2001-03-26 | 2002-10-03 | Seiko Instruments Inc | Thermal printer |
| JP2005161718A (en) * | 2003-12-03 | 2005-06-23 | Tohoku Ricoh Co Ltd | Image forming apparatus |
| CN201189747Y (en) * | 2008-01-25 | 2009-02-04 | 鼎翰科技股份有限公司 | Paper sheet positioning apparatus of bar code printers |
| CN201283696Y (en) * | 2008-10-27 | 2009-08-05 | 北京思普瑞特科技发展有限公司 | Thermal-sensitive printer core |
| JP2011073372A (en) * | 2009-09-30 | 2011-04-14 | Seiko Instruments Inc | Thermal printer |
| CN102001233B (en) * | 2010-09-10 | 2012-06-27 | 深圳市理邦精密仪器股份有限公司 | Printer structure |
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