CN204196463U - Thermal printer cassette automatic paper-cutting transmission mechanism - Google Patents
Thermal printer cassette automatic paper-cutting transmission mechanism Download PDFInfo
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- CN204196463U CN204196463U CN201420444539.1U CN201420444539U CN204196463U CN 204196463 U CN204196463 U CN 204196463U CN 201420444539 U CN201420444539 U CN 201420444539U CN 204196463 U CN204196463 U CN 204196463U
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Abstract
A kind of thermal printer cassette automatic paper-cutting transmission mechanism, it is characterized in that comprising turning cylinder, first gear, second gear, preloading spring, thumb wheel, worm screw and worm gear, first gear and aforementioned output gear engaged transmission side forms the first ratchet, the second gear side has the second ratchet be engaged with aforementioned first ratchet; Worm shaft is to hollow and to be sheathed on aforesaid turning cylinder and one end is fixedly connected with aforementioned second gear, the other end is fixedly connected with aforementioned thumb wheel, when aforementioned worm screw is by opposite force effect, under the state that this opposite force exceedes settings, aforementioned second ratchet and the first ratchet can get loose.Compared with prior art, the utility model has the advantage of: under there are the abnormal conditions such as paperboard, the first ratchet and the second ratchet release, the power of worm screw is not delivered on motor, effectively can protect motor.
Description
Technical field
The utility model relates to a kind of thermal printer cassette, particularly relates to a kind of cut paper transmission mechanism of thermal printer cassette.
Background technology
At present, can print continuously at printing paper, print complete after in the printer arrangement that printing paper cut off by cutting knife, great majority adopt scissor-like structure, this scissors structure comprises fixed blade and movable blades, one end of movable blades is cut paper face, and its blade towards fixed blade is arranged, and can coordinate printing paper cutting with the blade of stator.
When not needing cutting printing paper, have certain distance between fixed blade and movable blades, thus form a gap, printing paper passes from this gap.When needing cutting printing paper, movable blades under the drive of transmission mechanism near fixed blade one lateral movement, with and promote printing paper and move, by fixed blade by printing paper cutting to the blade side near fixed blade.Fixed blade is by after printing paper cutting, and movable blades returns back to initial position under the drive of transmission mechanism, waits for next operation.
Movable blades normally provides power by worm and wormwheel, wherein movable blades is provided with the chute be slidably matched with the finger on worm gear, the rotation motion of worm gear is made to become swinging of movable blades, worm screw wherein directly connects with motor-driven, through the Worm and Worm Gear Driving of big retarding ratio, for the cut paper motion of movable blades provides power.This kind of patent document can referenced patent number be the Chinese utility model patent " the cutting knife power set for printer " (Authorization Notice No. CN201769454U) of ZL201020264524.9; The patent No. is the Chinese utility model patent " bill printer core " (Authorization Notice No. CN202782189U) of ZL2011220484186.9.
Movable blades is removably mounted on outside the support of movement, and comprises the housing formed by base and cover, the transmission mechanism such as mounted motor and worm and wormwheel etc. in housing.Motor and transmission mechanism need take a large amount of spaces, and therefore, the volume of movable component is comparatively large, and whole movement seems comparatively heavy.In addition, worm screw is direct and motor output shaft is fixedly connected, there is no stationary support, if when there are the abnormal conditions such as paperboard, the opposite force of movable blades acts on worm screw, is directly passed to the output shaft of motor, longtime running like this, be easy to damage motor, cause the repair rate of the movement of printer to rise, make troubles to the use technology of user.Because structural design is unreasonable, cause motor premature deterioration or wearing and tearing.
Utility model content
Technical problem to be solved in the utility model is that under providing one to occur the abnormal conditions such as paperboard, the power of worm screw is not delivered to the thermal printer cassette automatic paper-cutting transmission mechanism on motor for the above-mentioned state of the art.
The utility model solves the problems of the technologies described above adopted technical scheme: a kind of thermal printer cassette automatic paper-cutting transmission mechanism, is characterized in that comprising
Turning cylinder, can be located in the installation region of aforementioned support rotationally;
First gear, to be located on aforesaid turning cylinder and can to rotate with the rotation of turning cylinder, described first gear and aforementioned output gear engaged transmission side forms the first ratchet;
Second gear, side has the second ratchet be engaged with aforementioned first ratchet;
Preloading spring, is sheathed on such rotation axle and also forces the first gear near the second gear all the time; And
Thumb wheel, is located on aforesaid turning cylinder,
Worm screw, axial hollow to be also sheathed on aforesaid turning cylinder and one end is fixedly connected with aforementioned second gear, and the other end is fixedly connected with aforementioned thumb wheel; And
Worm gear, with aforementioned worm engaging transmission,
When aforementioned worm screw is by opposite force effect, under the state that this opposite force exceedes settings, aforementioned second ratchet and the first ratchet can get loose.
The two ends of described worm screw are integrated with the mesopore of thumb wheel and the mesopore interference tight fit of the second gear respectively, and the two ends of described worm screw all form the straight trough in multiple parallel length of worm direction and form straight burr.Straight burr plays strengthens worm screw and the second gear and the friction tight degree of holding tightly of thumb wheel interference, can avoid causing tired lax problem because internal stress is excessive, the phenomenon generation of the mutual rotation preventing excessive rotation torque from causing better.Further, the cross section of described straight trough is triangle isosceles triangle, and the degree of depth is 0.1 ~ 0.3mm.
Compared with prior art, the utility model has the advantage of: under there are the abnormal conditions such as paperboard, the opposite force of movable blades acts on worm screw; when exceeding the resistance of setting, the first ratchet and the second ratchet release, like this; the power of worm screw is not delivered on motor, effectively can protect motor.
Accompanying drawing explanation
Fig. 1 is example structure schematic diagram.
Fig. 2 is structural representation after Fig. 1 cover plate is removed.
Fig. 3 is that in Fig. 2, part transmission mechanism decomposes installation diagram.
Fig. 4 is the enlarged drawing of worm screw in Fig. 3.
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, the utility model is described in further detail.
For ease of describing and understanding, embodiment is described using whole thermal printer cassette as main body.As shown in Figure 1, Figure 2 and Figure 3, automatic paper-cutting thermal printer cassette comprises support 1, ledger-plate 8, cutting blade 7, motor 3, cover plate 2 and transmission mechanism, formation installation region, support 1 upper surface, support 1 is provided with printhead (without display in figure) and rubber roll (without display in figure), is also provided with the microswitch 6 with motor 3 control connection in the installation region of support 1.
The installation region of support 1 is located at by ledger-plate 8, and cutting blade 7 one end can be located at the installation region of support 1 rotationally, and can coordinate cut paper with ledger-plate 8, and cutting blade 7 alongst offers bar hole 71; The installation region of support 1 is located at by motor 3, and has clutch end, and the clutch end of motor 3 is provided with output gear 31.Cover plate 2 is located at the outer face of support 1 and aforesaid ledger-plate 8 and cutting blade 7 can be covered.
Transmission mechanism is located at the installation region of support 1 and by the power transmission of motor 3 on cutting blade 7, can be realized swinging back and forth of cutting blade 7.Transmission mechanism comprises turning cylinder 46, first gear 44, second gear 43, preloading spring 45, thumb wheel 41, worm screw 42 and worm gear 5.
Turning cylinder 46 can be located in the installation region of support 1 rotationally, and the first gear 44 is located on aforesaid turning cylinder 46 and also can be rotated with the rotation of turning cylinder 46, and the first gear 44 is with output gear 31 engaged transmission and side forms the first ratchet 441.Second gear 43 side has the second ratchet 431 be engaged with the first ratchet 441, and preloading spring 45 is sheathed on turning cylinder 46 and also forces the first gear 44 near the second gear 43 all the time, and thumb wheel 41 is located on turning cylinder 46.
The axial hollow of worm screw 42 to be also sheathed on turning cylinder 46 and one end is fixedly connected with the second gear 43, and the other end is fixedly connected with thumb wheel 41.Worm gear 5 can be located at rotationally support installation region and with worm screw 42 engaged transmission.The lower surface eccentric position of worm gear 5 has the projection 52 be slidably matched with bar hole 71.The upper surface of worm gear 5 forms one coordinates to realize motor 3 start and stop cam 51 with the contact of microswitch 6, worm gear 5 is with moving cam 51 to rotate together, and cam 51 can drive contact, thus realizes the on off control to motor 3, namely by the change of cam 51 angle, the assurance on cut paper opportunity is realized.
When there are the abnormal conditions such as paperboard, the opposite force of cutting blade 7 acts on worm screw 42, first ratchet 441 of the second gear 43 second ratchet 431 and the first gear 44 will unclamp (getting loose) when exceeding the resistance of setting in slippage, the power of such worm screw 42 would not be directly delivered on motor 3, and the big current produced to avoid excessive load damages motor 3.
Shown in composition graphs 2, one end of cutting blade 7 is arranged on support 1 by a bearing pin 74, and the top of this bearing pin 74 has an end cap 73, and Compress Spring 72 is sheathed on aforementioned bearing pin 74 and one end and end cap 73 offsets, and the other end and cutting blade 7 upper surface offset.
As shown in Figure 4, the two ends of worm screw 42 are integrated with the mesopore of thumb wheel 41 and the mesopore interference tight fit of the second gear 43 respectively, and the two ends of worm screw 42 all form the straight trough 421 of multiple parallel worm screw 42 length direction and form straight burr.The cross section of straight trough 421 is triangle isosceles triangle, and the degree of depth is 0.1 ~ 0.3mm.Straight burr plays strengthens worm screw and the second gear 43 and the friction tight degree of holding tightly of thumb wheel 41 interference, can avoid causing tired lax problem because internal stress is excessive, the phenomenon generation of the mutual rotation preventing excessive rotation torque from causing better.
Claims (3)
1. a thermal printer cassette automatic paper-cutting transmission mechanism, is characterized in that comprising
Support;
Turning cylinder, can be located in the installation region of aforementioned support rotationally;
First gear, to be located on aforesaid turning cylinder and can to rotate with the rotation of turning cylinder, described first gear and an output gear engaged transmission side forms the first ratchet;
Second gear, side has the second ratchet be engaged with aforementioned first ratchet;
Preloading spring, is sheathed on such rotation axle and also forces the first gear near the second gear all the time; And
Thumb wheel, is located on aforesaid turning cylinder,
Worm screw, axial hollow to be also sheathed on aforesaid turning cylinder and one end is fixedly connected with aforementioned second gear, and the other end is fixedly connected with aforementioned thumb wheel; And
Worm gear, with aforementioned worm engaging transmission,
When aforementioned worm screw is by opposite force effect, under the state that this opposite force exceedes settings, aforementioned second ratchet and the first ratchet can get loose.
2. thermal printer cassette automatic paper-cutting transmission mechanism according to claim 1, it is characterized in that the two ends of described worm screw are integrated with the mesopore of thumb wheel and the mesopore interference tight fit of the second gear respectively, further, the two ends of described worm screw all form the straight trough in multiple parallel length of worm direction and form straight burr.
3. thermal printer cassette automatic paper-cutting transmission mechanism according to claim 2, it is characterized in that the cross section of described straight trough is triangle isosceles triangle, the degree of depth is 0.1 ~ 0.3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420444539.1U CN204196463U (en) | 2014-08-08 | 2014-08-08 | Thermal printer cassette automatic paper-cutting transmission mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420444539.1U CN204196463U (en) | 2014-08-08 | 2014-08-08 | Thermal printer cassette automatic paper-cutting transmission mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204196463U true CN204196463U (en) | 2015-03-11 |
Family
ID=52654458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420444539.1U Expired - Fee Related CN204196463U (en) | 2014-08-08 | 2014-08-08 | Thermal printer cassette automatic paper-cutting transmission mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204196463U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107175931A (en) * | 2017-06-15 | 2017-09-19 | 厦门顶尖电子有限公司 | Row's card structure with cutting knife thermal printer |
-
2014
- 2014-08-08 CN CN201420444539.1U patent/CN204196463U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107175931A (en) * | 2017-06-15 | 2017-09-19 | 厦门顶尖电子有限公司 | Row's card structure with cutting knife thermal printer |
| CN107175931B (en) * | 2017-06-15 | 2023-02-28 | 厦门顶尖电子有限公司 | Card arranging structure of thermal printer with cutter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150311 Termination date: 20170808 |