CN102205741B

CN102205741B - Paper cutting structure of miniprinter

Info

Publication number: CN102205741B
Application number: CN2011100669981A
Authority: CN
Inventors: 吴达豪; 梁岐江
Original assignee: Shenzhen Deka Technology Co Ltd
Current assignee: Shenzhen Deka Technology Co Ltd
Priority date: 2011-03-21
Filing date: 2011-03-21
Publication date: 2012-06-13
Anticipated expiration: 2031-03-21
Also published as: CN102205741A

Abstract

The invention discloses a paper cutting structure of a miniprinter. The paper cutting structure comprises a driving cutter holder, wherein the driving cutter holder is arranged on a base in a penetrating manner, a driving cutter is arranged on the driving cutter holder, a driven cutter holder is arranged on a support in a penetrating manner and provided with a fixed cutter, one side of the driving cutter holder is fixedly connected with a rotary arm, a sliding pin is arranged at the bottom end of the rotary arm in a penetrating manner, a motor is arranged on the base, a worm is connected with a driving shaft of the motor in a penetrating manner and engaged with a worm wheel on the base, and a spiral groove that can accommodate the sliding pin and can drive the rotary arm to rotate by the sliding pin is arranged on the end surface of the worm wheel. In the invention, the worm-worm wheel transmission and rotation of the rotary arm driven by the spiral groove on the worm wheel are adopted, actually speed reduction motion is done twice, namely twice amplification action is obtained during the conversion from motor torque to rotary arm torque, the effect is equivalent to that of speed reduction by a multistage gear set, but the size of the structure disclosed by the invention is far smaller than that of the original structure, therefore, the structure is more applicable to paper cutting of a miniprinter.

Description

A kind of cut paper structure of mini-printer

Technical field

The present invention relates to the cut paper structure of a kind of mini-printer, particularly a kind of mini-printer.

Background technology

Mini-printer is widely used in industry-by-industry; Check meter, movable police system, move government system or the like such as instrument and meter, supermarket, convenience store, postal service, bank, tobacco monopolization, public utilities, at present, the cut paper structure of microprinting is divided into two kinds usually; First kind is flat knife cut paper structure; Its structure is driving knife and shearing and be plane contact between the cutting edge during withdrawing from moving knife, and this design has caused driving knife and to overlay power each other from moving knife bigger, driving knife with the face contact wear appears easily from moving knife; In addition, also require driving knife with higher from the installation quality of fit of moving knife; Second kind is rotary paper-cutting cutter cut paper structure; It mainly is to adopt motor to cut through the rotation of multi-stage gear group deceleration; Because rotary paper-cutting cutter cut paper structure be the rotary-cut of wrong axle, driving knife with shear and the withdrawing process is to contact driving knife, very little from the power that overlays that applies between the moving knife from moving knife; Therefore driving knife reaches minimum with wearing and tearing from moving knife, and cutter life is longer; Driving knife, bigger from the installation site tolerance between the moving knife.But because the rotational structure commutation method, the turning cylinder of driving mechanism is the parallel axes structure, as reaching certain function life-span, needs to form bigger structural volume.

Summary of the invention

In order to overcome the deficiency of prior art, the present invention provides a kind of and takies that volume is little, the cut paper structure of the mini-printer of long service life.

The technical solution adopted for the present invention to solve the technical problems is:

A kind of cut paper structure of mini-printer, it comprises the active knife rest that is installed on the base, initiatively knife rest is provided with main cutting knife; Be coated with on the support from movable knife rack; Be provided with cutter from movable knife rack, a side of described active knife rest is fixedly connected with spiral arm, and the bottom of spiral arm is coated with sliding pin; On the said base motor is installed; Cross-under has worm screw on the driving shaft of motor, and worm gear is meshed on worm screw and the base, and said worm gear end face is provided with can ccontaining sliding pin and can drive the helicla flute that spiral arm rotates through sliding pin;

As the improvement of technique scheme, said worm gear is combined by last worm gear and sliding block, forms helicla flute between last worm gear and the sliding block;

As the further improvement of technique scheme, described sliding block extends upward the pin that installs worm gear; The upper surface of said sliding block is provided with locating hole, and the said worm gear lower surface of going up is provided with the alignment pin that matches with locating hole; Said sliding block has last spiral camber, and last worm gear has following spiral camber, and the gap between following spiral camber and the last spiral camber forms helicla flute.

The invention has the beneficial effects as follows: worm screw, worm-drive that this product adopts, again to the worm gear helicla flute drive the spiral arm rotation, made twice retarded motion altogether; Promptly at motor to the motion transmission of spiral arm through twice deceleration; Motor torque is transformed into the spiral arm moment of torsion and obtains amplification twice, and its effect is identical with the deceleration of multi-stage gear group, but spatial distribution is more reasonable; Overall volume is littler, makes this structure more be applicable on the cut paper of mini-printer.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the present invention is further specified.

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a driving knife drive unit sketch map of the present invention;

Fig. 3 is a driving knife drive unit other direction sketch map of the present invention;

Fig. 4 be driving knife of the present invention with from moving knife movement relation sketch map;

Fig. 5 is a worm gear arrangement broken away view of the present invention;

Fig. 6 is a structural representation of going up the worm gear other direction of the present invention;

Fig. 7 is a worm gear arrangement sketch map of the present invention;

Fig. 8 is a driving knife structural representation of the present invention;

Fig. 9 is a driving knife structure broken away view of the present invention.

The specific embodiment

With reference to Fig. 1 ~ Fig. 9, a kind of cut paper structure of mini-printer, it comprises the active knife rest 2 that is installed on the base 1; Initiatively knife rest 2 is provided with main cutting knife 21, and said main cutting knife 21 adopts adhesive to be bonded on the active knife rest 2, is coated with on the support 3 from movable knife rack 4; Be provided with cutter 41 from movable knife rack 4; Said cutter 41 adopts adhesive to be bonded in from movable knife rack 4, and a side of said active knife rest 2 is installed with spiral arm 5 through set bolt 10, and the bottom of spiral arm 5 is coated with sliding pin 51; On the said base 1 motor 6 is installed; Cross-under has worm screw 7 on the driving shaft of motor 6, and worm gear 8 is meshed on worm screw 7 and the base 1, and said worm gear 8 end faces are provided with can ccontaining sliding pin 51 and can drive the helicla flute 81 that spiral arms 5 rotate through sliding pin 51.

The worm gear 8 that the present invention adopts is combined by last worm gear 82 and sliding block 83; Described sliding block 83 extends upward the pin 831 that installs worm gear 82; In addition, the upper surface of sliding block 83 is provided with locating hole 832, and said worm gear 82 lower surfaces of going up are provided with the alignment pin 822 that matches with locating hole 832; Said sliding block 83 has last spiral camber 833; Last worm gear 82 has following spiral camber 821, and the gap between following spiral camber 833 and the last spiral camber 821 forms helicla flute 81, and helicla flute 81 can drive spiral arm 5 and rotate; Certainly according to actual needs; Worm gear 8 also can adopt the global formation structure; Directly helicla flute 81 is set on the periphery of worm gear 8, so, everyly in a word reach the object of the invention and effect all should belong to protection scope of the present invention with the mode that is equal to replacement no matter adopt which kind of installation form.

Said support 3 and be provided with extension spring 9 between the movable knife rack 4; The use of extension spring 9 makes the cutting edge line of cutter 41 be adjacent to the cutting edge line to main cutting knife 21, and when 2 rotations of active knife rest, extruding is from movable knife rack 4; Paper on the shearing point is cut off; Cutter 41 is rotated by main cutting knife 21 extruding in shear history, and shearing point is shifted to the other end from an end of cutting edge line, accomplishes shear history.

The operation principle of this product is: when motor 6 drives worm screw 7 rotations; Worm screw 7 drives worm gear 8 rotations on the base 1, and the helicla flute 81 on the worm gear 8 drives spiral arm 5 and drives initiatively knife rest 2 rotations, in addition; Because the cutting edge line of main cutting knife 21 and the cutting edge line of cutter 41 are slightly staggered; When 2 rotations of active knife rest, extruding is from movable knife rack 4, and the paper on the shearing point is cut off.

Worm screw 7, worm gear 8 transmissions that this product adopts are retarded motions; And on the worm gear 8 helicla flute 81 drive spiral arms 5 rotations, also be a retarded motion, promptly at motor 6 to the motion transmission of spiral arm 5 through twice deceleration; Motor 6 goes through torque conversion obtain amplification twice to spiral arm 5 moments of torsion; Its effect is identical with the deceleration of multi-stage gear group, but the original structure of its volume ratio is much little, makes this structure more be applicable on the cut paper of mini-printer.

Claims

1. the cut paper structure of a mini-printer; It comprises the active knife rest (2) that is installed on the base (1); Initiatively knife rest (2) is provided with main cutting knife (21), is coated with on the support (3) from movable knife rack (4), is provided with cutter (41) from movable knife rack (4); It is characterized in that: a side of described active knife rest (2) is fixedly connected with spiral arm (5); The bottom of spiral arm (5) is coated with sliding pin (51), and motor (6) is installed on the said base (1), and cross-under has worm screw (7) on the driving shaft of motor (6); Worm screw (7) is meshed with worm gear (8) on the base (1); Said worm gear (8) end face be provided with can ccontaining sliding pin (51) helicla flute (81), helicla flute (81) can drive spiral arm (5) through sliding pin (51) and rotate, spiral arm (5) drive initiatively knife rest (2) rotation extrusion from movable knife rack (4) thus paper is cut off.

2. the cut paper structure of a kind of mini-printer according to claim 1; It is characterized in that: said worm gear (8) is combined by last worm gear (82) and sliding block (83), forms helicla flute (81) between last worm gear (82) and the sliding block (83).

3. the cut paper structure of a kind of mini-printer according to claim 2, it is characterized in that: described sliding block (83) extends upward the pin (831) that installs worm gear (82).

4. the cut paper structure of a kind of mini-printer according to claim 2; It is characterized in that: the upper surface of said sliding block (83) is provided with locating hole (832), and said worm gear (82) lower surface of going up is provided with the alignment pin (822) that matches with locating hole (832).

5. the cut paper structure of a kind of mini-printer according to claim 2; It is characterized in that: said sliding block (83) has last spiral camber (833); Last worm gear (82) has following spiral camber (821), and the gap between following spiral camber (833) and the last spiral camber (821) forms helicla flute (81).

6. the cut paper structure of a kind of mini-printer according to claim 1 is characterized in that: said support (3) and be provided with extension spring (9) between the movable knife rack (4).

7. the cut paper structure of a kind of mini-printer according to claim 1 is characterized in that: said main cutting knife (21) is bonded in initiatively on the knife rest (2).

8. the cut paper structure of a kind of mini-printer according to claim 1, it is characterized in that: said cutter (41) is bonded in from movable knife rack (4).

9. the cut paper structure of a kind of mini-printer according to claim 1, it is characterized in that: a side of said active knife rest (2) is installed with spiral arm (5) through set bolt (10).