CN201979820U

CN201979820U - Paper cutting structure of miniprinter

Info

Publication number: CN201979820U
Application number: CN2011200739814U
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: 2011-09-21
Anticipated expiration: 2021-03-21

Abstract

The utility model discloses a paper cutting structure of a miniprinter, which comprises a driving cutter rest and a driven cutter rest, wherein the driving cutter rest penetrates into a base and is provided with a main cutter, and the driven cutter rest penetrates into a support and is provided with a fixed cutter. One side of the driving cutter rest is fixedly connected with a rotating arm, a sliding pin penetrates into and installed at the bottom of the rotating arm. A motor is installed on the base, a driving shaft of the motor is connected with a worm which is meshed with a worm wheel on the base, and the end face of the worm wheel is provided with a spiral groove which can hold the sliding pin and drive the rotating arm to rotate through the sliding pin. The paper cutting structure of the miniprinter carries out two decelerated motions through adopting a worm and worm wheel transmission and a rotating motion of the rotating arm driven by the spiral groove on the worm wheel, namely two amplified actions are obtained in the converting process from the motor torque to the rotating arm torque, and effects of the paper cutting structure are same with that of deceleration of multiple-stage gear sets. However the paper cutting structure of the miniprinter is smaller in volume than original structures, thereby leading the paper cutting structure to be more applicable to the miniprinter.

Description

A kind of cut paper structure of mini-printer

Technical field

The utility model 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, such as instrument and meter, the supermarket, convenience store, postal, bank, tobacco monopolization, public utilities are checked meter, movable police system, mobile government system or the like, 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 is shearing and be plane contact between the cutting edge during withdrawing from moving knife, this design has caused driving knife and has overlayed power mutually 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 by the rotation of multi-stage gear group deceleration, because rotary paper-cutting cutter cut paper structure is the rotary-cut of wrong axle, driving knife with shear from moving knife and the withdrawing process contacts for point, driving knife, from apply between the moving knife to overlay power very little, 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.

The utility model content

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

The technical scheme that its technical problem that solves the utility model adopts 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, one side of described active knife rest is fixedly connected with spiral arm, the bottom of spiral arm is coated with sliding pin, on the described base motor is installed, cross-under has worm screw on the driving shaft of motor, worm screw is meshed with worm gear on the base, and described worm gear end face is provided with and can also can drives the helicla flute that spiral arm rotates by sliding pin by ccontaining sliding pin;

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

As further improvement in the technical proposal, described sliding block extends upward the pin that installs worm gear; The upper surface of described sliding block is provided with locating hole, and the described worm gear lower surface of going up is provided with the alignment pin that matches with locating hole; Described 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 beneficial effects of the utility model are: 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 arrive the motion transmission of spiral arm through twice deceleration at motor, 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 drawings and Examples the utility model is further specified.

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is a driving knife drive unit schematic diagram of the present utility model;

Fig. 3 is a driving knife drive unit other direction schematic diagram of the present utility model;

Fig. 4 be driving knife of the present utility model with from moving knife movement relation schematic diagram;

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

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

Fig. 7 is a worm gear arrangement schematic diagram of the present utility model;

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

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

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, described main cutting knife 21 adopts adhesive to be bonded on the active knife rest 2, be coated with on the support 3 from movable knife rack 4, be provided with cutter 41 from movable knife rack 4, described cutter 41 adopts adhesive to be bonded in from movable knife rack 4, one side of described active knife rest 2 is installed with spiral arm 5 by set bolt 10, the bottom of spiral arm 5 is coated with sliding pin 51, on the described base 1 motor 6 is installed, cross-under has worm screw 7 on the driving shaft of motor 6, and worm screw 7 is meshed with worm gear 8 on the base 1, and described worm gear 8 end faces are provided with and can also can drive the helicla flute 81 that spiral arms 5 rotate by sliding pin 51 by ccontaining sliding pin 51.

The worm gear 8 that the utility model 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, described worm gear 82 lower surfaces of going up are provided with the alignment pin 822 that matches with locating hole 832, described sliding block 83 has last spiral camber 833, last worm gear 82 has following spiral camber 821, gap between following spiral camber 821 and the last spiral camber 833 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; helicla flute 81 directly is set on the periphery of worm gear 8; no matter, everyly in a word reach the purpose of this utility model and effect all should belong to protection domain of the present utility model in the mode that is equal to replacement so adopt which kind of installation form.

Described 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, when 2 rotations of active knife rest, extruding is from movable knife rack 4, paper on the shearing point is cut, 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, finishes 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, 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.

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, it also is a retarded motion, promptly arrive the motion transmission of spiral arm 5 through twice deceleration at motor 6, motor 6 torque axis are changed to spiral arm 5 moments of torsion and are obtained amplification twice, its effect is identical with the deceleration of multi-stage gear group, but the original structure of its volume ratio is much smaller, 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), be coated with on the support (3) from movable knife rack (4), be 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), motor (6) is installed on the described base (1), cross-under has worm screw (7) on the driving shaft of motor (6), worm screw (7) base (1) is gone up worm gear (8) and is meshed, and described worm gear (8) end face is provided with and can also can drives the helicla flute (81) that spiral arm (5) rotates by sliding pin (51) by ccontaining sliding pin (51).

2. the cut paper structure of a kind of mini-printer according to claim 1, it is characterized in that: described 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 described sliding block (83) is provided with locating hole (832), and described 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: described sliding block (83) has last spiral camber (833), last worm gear (82) has following spiral camber (821), and the gap between following spiral camber (821) and the last spiral camber (833) forms helicla flute (81).

6. the cut paper structure of a kind of mini-printer according to claim 1 is characterized in that: described 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: described 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: described 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 described active knife rest (2) is installed with spiral arm (5) by set bolt (10).