CN102225665A - Printing apparatus possessing balance type temperature-sensitive head - Google Patents
Printing apparatus possessing balance type temperature-sensitive head Download PDFInfo
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- CN102225665A CN102225665A CN2011101106993A CN201110110699A CN102225665A CN 102225665 A CN102225665 A CN 102225665A CN 2011101106993 A CN2011101106993 A CN 2011101106993A CN 201110110699 A CN201110110699 A CN 201110110699A CN 102225665 A CN102225665 A CN 102225665A
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- thermal head
- fixed mount
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- printing
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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 the 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 characteristics such as non-maintaining.Thereby, by each extensively utilization of field institute, particularly more extensive in the medical instruments field utilization, for example, when people arrived hospital's health check-up, the doctor need use the thermal printing apparatus on the 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 on market, using at present, because thermal head can not remain on the same horizontal line with rubber-surfaced roll, also be difficult to remain constant compression force, in use for some time, will occur printing light and print paper jam phenomenon, reliability of products 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 structure design, solve in the prior art paperboard and print thin out technical problem.
The present invention comprises umbilicate shell component down for this printing equipment that provides is provided, be arranged at the print components in the described shell component intermediate recess space down, fasten the last shell component of assembling with described shell component down, the described shell component of going up has an opening, described print components partly is exposed in this opening, also comprise being hinged on the described printing door of going up on the shell component, described printing door fastens the described opening of going up 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 the described fixed head, thermal head flexibly connects fixed mount, fixed mount and holder are hinged, print components also includes the elastic equilibrium mechanism that is used for the balance thermal head, and this elastic equilibrium mechanism is arranged between fixed mount and the thermal head.The present invention adds flexible balance device between thermal head and fixed mount, make and remain at same horizontal line between thermal head and the rubber-surfaced roll, and remain suitable printing distance, thus solved the printing paper walking process in the uneven problem of pressure, guarantee in the 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 thermal head and adjusts the position automatically.
Of the present invention further the improvement again is: be installed with the cantilever stator on the bottom tread of described stairstepping fixed mount, the bending downwards of these cantilever stator two ends protrudes in the lower surface of described bottom tread, these cantilever stator two ends respectively are provided with a fixing hole, and it is hinged with described holder and fixed mount that fixed bar passes above-mentioned two fixing holes; Be provided with first back-moving spring between described holder and the fixed mount bottom tread, described cantilever stator is arranged between first back-moving spring and the 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 constant compression force for a long time, 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 the 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 along fixed mount riser medium line symmetric arrangement.In the technical scheme of the present invention, elastic equilibrium mechanism adopts the compression spring, for example: coil spring and spring leaf, if employing coil spring, then be necessary for plural coil spring, the balance that so just can keep-up pressure, simultaneously, the parameter that also will guarantee each spring is identical or approaching, helps the equilibrium that keep-ups pressure.Adopt the spring leaf of fork-shaped then more suitable because the application point of fork-shaped spring is than broad, and about the fork pressure ratio average, help pressure balance, for the present invention, the fork-shaped spring is a 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 take place.
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 horizontal plane, described boss is two, and the peak of these two boss upper surfaces is in same horizontal plane.Adopt the scheme of boss location among the present invention, be used for the initial installment state of positioning and fixing frame, thereby guarantee parallel between thermal head and the 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 invention;
Accompanying drawing 2 is an embodiment of the invention installation schematic diagram;
Accompanying drawing 3 is embodiment of the invention cross-sectional schematic C-C;
Accompanying drawing 4 amplifies for the embodiment of the invention is local looks schematic diagram X;
Accompanying drawing 5 is the decomposing schematic representation of embodiment of the invention paper storehouse assembly;
Accompanying drawing 6 is printed the decomposing schematic representation of door assembly for the embodiment of the invention;
Accompanying drawing 7 is looked schematic diagram for the master of embodiment of the invention paper storehouse assembly;
Accompanying drawing 8 is the cross-sectional schematic A-A of embodiment of the invention paper storehouse assembly;
Accompanying drawing 9 amplifies for the embodiment of the invention is local looks schematic diagram Y;
Accompanying drawing 10 is an embodiment of the invention fixed mount stereopsis schematic diagram;
Accompanying drawing 11 is printed door stereopsis schematic diagram for the embodiment of the invention;
Accompanying drawing 12 is an embodiment of the 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, go up shell component 12, paper storehouse 13, shell component 14, stop screw 15, fixed mount 16, thermal head 17, 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, retaining paper bar 27, rubber-surfaced roll 28, bearing 29, snap close 30, second back-moving spring 31, gear 32 down; Combine with upper member, form a kind of medical thermal printer structure (shown in accompanying drawing 1 to 9).
This medical printer structure, implementation are to be applied on the medical diagnosis equipment.Its structural member feature description: printing door 11 dual-sides are provided with two small through hole 111 and are used for fixing swingle 25, the inboard is provided with a liftout attachment 112, the place ahead is provided with another group through hole 113 and is used for fixing retaining paper bar 27 again, aspect is provided with a C type opening 114 and is used for fixing bearing 29 on it, it also is to be used for fixing bearing 29 that the corresponding other end is provided with circular hole 115, be provided with two little muscle positions 116 in printing door 11 fronts, print the door two ends two small lugs 117 are set, this projection design is on same horizontal line, and its effect is a balance fixed mount 16; Last shell component 12 1 ends are provided with an open slot 121, and this open slot is used for placing the printing door assembly; Be provided with double-screw bolt in the following shell component 14, be used for fixing paper storehouse assembly; One boss 151 is set on the stop screw 15; Fixed mount 16 external forms are the Z shape, it is provided with 161 these waist holes, one group of waist hole and is used to place stop screw 15, madial wall is provided with two fork-shaped shell fragments, 162 these shell fragments and is used for balance thermal head 17, the centre is provided with 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 the holder 21, is used to place first back-moving spring 18, dual-side is provided with one group of through hole 212 and by fixed bar 20 fixed mount 16 is installed.
The assembling mode: elder generation puts into paper storehouse assembly down in the shell component 14 and is screwed, building shell component 12 more also is fixed with screw, at last the printing door assembly is packed into and go up in the shell component open slot 121 then this structure installation (as shown in Figure 2).Paper storehouse component assembling mode (as shown in Figure 5): place thermal head 17 on the fixed mount 16 and make fork-shaped shell fragment 162 stressed, with two stop screws 15 thermal head 17 is fixed, the boss 151 that is provided with on the stop screw 15 places in the waist hole 161; Set one group of shrinkage pool 211 is put into first back-moving spring 18 respectively on the holder 21, the fixed mount 16 that thermal head 17 is housed is put on the holder 21, make the one group of through hole 212 which is provided with on the two through hole 164 secured in alignment seats 21, in this through hole, penetrate fixed bar 20, load onto jump ring 19 respectively at fixed bar 20 two ends, fixed head 23 locks on the holder 21 from the negative, after thermal head 17 and other structural member will be housed fixed head 23 be put on the paper storehouse 13, putting locking cap 22 usefulness screws locks, at last gear-box 24 is locked in paper storehouse 13 sides, i.e. 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 buckle 26 respectively at two ends, second back-moving spring 31 is put on the snap close 30, and places in the printing door 11, with screw it is locked on the swingle 25; Overlap upper bearing (metal) 29 respectively at rubber-surfaced roll 28 two ends, the back penetrates into rubber-surfaced roll 28 1 ends that install bearing 29 in the circular hole 115, the other end snaps onto in the C type opening 114, gear 32 is placed in rubber-surfaced roll 28 and is screwed at circular hole 115 ends, at last retaining paper bar 27 is encased in the through hole 113, promptly prints door assembly installation (as shown in Figure 1).
Printer arrangement of the present invention at existing medical apparatus and instruments in actual use, the problem of existence is improved; Promptly in the print structure of this medical equipment, be provided with fixed mount 16 and which is provided with waist hole 161, 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 sides balances, cantilever stator 163 installs on holder 21 by fixed bar 20, when the printing door assembly is encased in the shell component open slot 121, rubber-surfaced roll 28 promotion thermal heads 17 and the mobile backward 1.0mm of stop screw 15 are 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 also is close to rubber-surfaced roll 28 under the effect of the cantilever stator 163 and first back-moving spring 18; Thereby guaranteed that thermal head 17 remains on same horizontal line with rubber-surfaced roll 28 all the time, thereby avoided the generation of paper jam phenomenon in the print procedure.
Being provided with two little muscle position 116 its effects in printing door 11 fronts is, in the process of printing printing paper is raised, and makes the printing paper activity more smooth and easy.
If the user is when changing printing paper, when pulling out the initial print page or leaf 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 retaining paper bar 27 is pressed on printing paper in the paper storehouse 13, and printing is promoted along paper storehouse 13 sidewalls, can place restrictions on printing paper so again toward inclined to one side on one side, and thermal head 17 remains on same horizontal line with rubber-surfaced roll 28 all the time, and after two to three pages of paper of printer prints, its printing paper can be adjusted to the normal position automatically.
Of paramount importance is to print door 11 two ends two small lugs 117 are set.When this printing equipment at environment than under the harsh conditions or very long one-period when not stopping using, because of thermal head 17 materials are aluminium alloy, material expands and causes the writing waveform that prints light partially.Print light partially phenomenon in order thoroughly to solve, printing door 11 two ends are provided with two small lugs 117 and just show out its effect, because two projections 117 designs are on same horizontal line, when the printing door is encased in mouthful groove 121, just fixed mount 16 is blocked, it is remained on the same horizontal line; One group of waist hole 161 is set on the 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 promotes thermal head 17 by fork-shaped shell fragment 162 and can move forward and backward in waist hole 161, after installing the printing door assembly, rubber-surfaced roll 28 is close to thermal head 17, and moves 1mm-2mm after making it in waist hole 161, 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 the same horizontal line of its maintenance; When expanding because of thermal head 17 materials, 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, also are to adjust to same horizontal 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 be in conjunction with concrete preferred implementation to further describing that the present invention did, 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 (10)
1. printing equipment with balanced type thermal head, comprise umbilicate shell component down, be arranged at the print components in the described shell component intermediate recess space down, fasten the last shell component of assembling with described shell component down, the described shell component of going up has an opening, also comprise being hinged on the described printing door of going up on the shell component, described printing door fastens the described opening of going up 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 the described fixed head, thermal head flexibly connects fixed mount, fixed mount and holder are hinged, print components also includes the elastic equilibrium mechanism that is used for the balance thermal head, and this elastic equilibrium mechanism is arranged between fixed mount and the thermal head.
2. according to the described printing equipment of claim 1 with balanced type thermal 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. according to the described printing equipment of claim 2 with balanced type thermal head, it is characterized in that: be installed with the cantilever stator on the bottom tread of described stairstepping fixed mount, the bending downwards of these cantilever stator two ends protrudes in the lower surface of described bottom tread, these cantilever stator two ends respectively are provided with a fixing hole, and it is hinged with described holder and fixed mount that fixed bar passes above-mentioned two fixing holes.
4. according to the described printing equipment with balanced type thermal head of claim 3, it is characterized in that: be provided with first back-moving spring between described holder and the fixed mount bottom tread, described cantilever stator is arranged between first back-moving spring and the fixed mount riser.
5. according to each described printing equipment in the claim 2 to 4 with balanced type thermal head, it is characterized in that: described elastic equilibrium mechanism is the fork-shaped shell fragment, two jaws of this fork-shaped shell fragment are against on the described thermal head, and fork-tail is fixed on the riser of described fixed mount.
6. according to the described printing equipment of claim 5 with balanced type thermal 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.
7. according to the described printing equipment with balanced type thermal head of claim 5, 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 along fixed mount riser medium line symmetric arrangement.
8. according to each described printing equipment with balanced type thermal head in the 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.
9. according to the described printing equipment with balanced type thermal head of claim 1, it is characterized in that: extend outward boss on the printing door on described fixed mount direction, two place's peaks of this boss upper surface are in same horizontal plane.
10. according to the described printing equipment with balanced type thermal head of claim 9, it is characterized in that: described boss is two, and the peak of these two boss upper surfaces is in same horizontal plane.
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CN 201110110699 CN102225665B (en) | 2011-04-29 | 2011-04-29 | Printing apparatus possessing balance type temperature-sensitive head |
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CN 201110110699 CN102225665B (en) | 2011-04-29 | 2011-04-29 | Printing apparatus possessing balance type temperature-sensitive head |
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CN102225665B CN102225665B (en) | 2013-06-12 |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105711273A (en) * | 2016-03-11 | 2016-06-29 | 武汉中旗生物医疗电子有限公司 | Segmented leaf spring type self-adjustment printing structure |
JP2018183925A (en) * | 2017-04-26 | 2018-11-22 | セイコーインスツル株式会社 | Thermal printer and portable terminal |
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JPH06127072A (en) * | 1992-10-16 | 1994-05-10 | Sharp Corp | Thermal printing mechanism |
US20020135659A1 (en) * | 2001-03-26 | 2002-09-26 | Yoshinori Sato | 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 |
US20110074903A1 (en) * | 2009-09-30 | 2011-03-31 | Masanori Takahashi | Thermal printer |
CN102001233A (en) * | 2010-09-10 | 2011-04-06 | 深圳市理邦精密仪器股份有限公司 | Printer structure |
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2011
- 2011-04-29 CN CN 201110110699 patent/CN102225665B/en active Active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH06127072A (en) * | 1992-10-16 | 1994-05-10 | Sharp Corp | Thermal printing mechanism |
US20020135659A1 (en) * | 2001-03-26 | 2002-09-26 | Yoshinori Sato | 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 |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN105711273A (en) * | 2016-03-11 | 2016-06-29 | 武汉中旗生物医疗电子有限公司 | Segmented leaf spring type self-adjustment printing structure |
JP2018183925A (en) * | 2017-04-26 | 2018-11-22 | セイコーインスツル株式会社 | Thermal printer and portable terminal |
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