CN2923319Y

CN2923319Y - Needle-type printing head

Info

Publication number: CN2923319Y
Application number: CN 200620057819
Authority: CN
Inventors: 梁岐江; 李翀; 田中孝一
Original assignee: Shenzhen Deka Technology Co Ltd
Current assignee: Shenzhen Deka Technology Co Ltd
Priority date: 2006-04-12
Filing date: 2006-04-12
Publication date: 2007-07-18
Anticipated expiration: 2016-04-12

Abstract

The utility model discloses a stylus printing head which comprises a printing head frame, stringed signal device boards on the frame, an insulation board, a metal cup, coil assemblies, a magnetic circular board, an armature base, armatures which are positioned in the armature base and have the same amount of the coil assemblies. The internal frame is internally provided with a plurality of print wires of which the heads contact with the tips of the armatures, the space between the heads of the print wires and a seeker on the printing head frame is provided with a spring. The utility model leads electric currents to the coil assemblies for producing a magnetic field through the signal device boards, whereby, a iron core of the armatures is sucked towards a member bar of the metal cup by the action of the magnetic field, the tips of the armatures drive the print wires to move down and compress the spring out from the front side of a needle guide when the armatures are moving, thereby realizing a printing. The utility model has a simple structure and a good effect of heat dispersion and therefore may be extensively applied to the production of stylus printer heads.

Description

A kind of needle type print head

Technical field

The utility model relates to a kind of needle type print head.

Background technology

Needle type print head is owing to have good versatility and the low characteristics of price, thereby obtain to use widely, all needle type print heads all are to use electromagnet to order about armature selectively and impact print needle now, thereby realize the purpose of printing, but existing needle type print head is welded on print needle the armature tip usually, because print needle in working order the time, can produce a large amount of heats, thereby reduced the bonding strength of welding portion, shortened the service life of product; So also occurred the version that a kind of print needle and armature are separated from each other at present,, print needle divides body structure because adopting, it is provided with hook at the print needle top and uses plastic material that it is wrapped up as the print needle head, and the making of this print needle is complicated, and firmly intensity is low; In addition, the structure of existing needle type print head is comparatively complicated, and radiating effect is poor, so be difficult to satisfy people's instructions for use.

Summary of the invention

In order to overcome the deficiencies in the prior art, it is a kind of simple in structure that the utility model provides, the needle type print head of good heat dissipation effect.

The technical scheme that its technical problem that solves the utility model adopts is:

A kind of needle type print head, it comprises printing head support part, middle part guide board and front end guide board are installed in the printing head support part, be equipped with the recoil simulator plate on the printing head support part according to this, insulation board, metal cup, a plurality of coil groups are installed on the described metal cup, pin on the coil groups passes metal cup, insulation board is welded on the recoil simulator plate, described recoil simulator plate is provided with the signal connector, described metal cup top is placed with the flux path plate according to this, pad, the armature seat, armature with the same quantity of coil groups is installed in the armature seat, be provided with many print needles in the described printing head support part, described every print needle is formed in one, the printing syringe needle on its top contacts with the armature tip, print between the target seeker on syringe needle and the printing head support part and be provided with spring, the middle part guide board that described print needle passes on the printing head support part exposes from the front end guide board, and described armature top is placed with reed, felt and base plate, base plate are provided with the press strip that is connected on the printing head support part;

As improvement of the technical scheme, the top at described armature tip is provided with the adjustment pad;

As further improvement in the technical proposal, be provided with pad between described flux path plate and the armature seat.

The beneficial effects of the utility model are: the recoil simulator plate flows into electric current on the coil groups, coil groups produces magnetic field, under the active force in magnetic field, iron core on the armature is inhaled the rod member on metal cup, armature is in motion, the tip of armature is ordered about print needle and is moved downward, and compresses spring and expose from the front end guide board, thereby realizes the purpose of printing; This product structure is simple, good heat dissipation effect, thus can be widely used in the production of needle type print head.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is a structure broken away view of the present utility model;

Fig. 2 is a print needle structural representation of the present utility model.

The specific embodiment

With reference to Fig. 1, Fig. 2, a kind of needle type print head, comprise printing head support part 3, middle part guide board 31 and front end guide board 32 are installed in the printing head support part 3, be equipped with recoil simulator plate 4, insulation board 5, metal cup 6 on the printing head support part 3 according to this, annular is provided with rod member 61 on the described metal cup 6, be coated with a coil groups 7 on described each rod member 61, this product is the nine kinds of needles printhead, so when installing, nine coil groups 7 can be installed on metal cup 6, and the pin 71 on the coil groups 7 passes metal cup 6, insulation board 5 is welded on recoil simulator plate 4; Described recoil simulator plate 4 is provided with signal connector 41, and signal connector 41 mainly is that the control device on printhead and the printer is linked together; Described metal cup 6 tops are placed with flux path plate 8, armature seat 10 according to this, described flux path plate 8 is made by high permeability material, its surface is provided with and coil groups 7 corresponding through holes 81, armature 9 with coil groups 7 same quantity is installed in the described armature seat 10, be welded with iron core 91 on the described armature 9, described iron core 91 is arranged on the through hole 81 of flux path plate 8; When preventing armature 9 motion with flux path plate 8 generation rigid collision, can between flux path plate 8 and armature seat 10, be provided with pad 11, be provided with many print needles 2 in the described printing head support part 3, described every print needle 2 is formed in one, this design has effectively improved the quality of print needle 2, prolonged the service life of product, the printing syringe needle 21 on print needle 2 tops contacts with armature 9 tips, print between the target seeker 33 on syringe needle 21 and the printing head support part 3 and be provided with spring 22, the middle part guide board 31 that described print needle 2 passes on the printing head support part 3 exposes from front end guide board 32, described armature 10 tops are placed with reed 12, felt 13 and base plate 14, the use of reed 12 and felt 13, effectively be pressed on armature 10 afterbodys, in addition, base plate 14 is effectively derived the heat on the metal cup 6, thereby reach the effect of heat radiation, base plate 14 is provided with press strip 1, press strip 1 is connected on the printing head support part 3, and all accessories of printhead are fixed together, adjust pad 15 for the ease of adjusting armature 9 tips and the distance of printing syringe needle 21, can above armature 9 tips, being provided with.

Operation principle of the present utility model is: recoil simulator plate 4 flows into electric current on the coil groups 7, coil groups 7 produces magnetic field, under the active force in magnetic field, the rod member 61 that iron core 91 on the armature 9 is inhaled on metal cup 6, armature 9 is in motion, the tip of armature 9 is ordered about print needle 2 and is moved downward, and compresses spring 22 and expose from front end guide board 32, thereby realizes the purpose of printing; After voltage was removed, magnetic field disappeared, and the attraction between iron core 91 and the rod member 61 disappears, 22 reduction of compression spring, and print needle 2 pushes away and is original position, and armature 9 returns to original state under the active force of reed 12, felt 13.

This product structure is simple, good heat dissipation effect, thus can be widely used in the production of needle type print head.

Claims

1. needle type print head, it is characterized in that: comprise printing head support part (3), middle part guide board (31) and front end guide board (32) are installed in the printing head support part (3), be equipped with recoil simulator plate (4) on the printing head support part (3) according to this, insulation board (5), metal cup (6), a plurality of coil groups (7) are installed on the described metal cup (6), pin (71) on the coil groups (7) passes metal cup (6), insulation board (5) is welded on recoil simulator plate (4), described recoil simulator plate (4) is provided with signal connector (41), described metal cup (6) top is placed with flux path plate (8) according to this, armature seat (10), armature (9) with the same quantity of coil groups (7) is installed in the armature seat (10), be provided with many print needles (2) in the described printing head support part (3), described every print needle (2) is formed in one, the printing syringe needle (21) on its top contacts with armature (9) tip, print between the target seeker (33) on syringe needle (21) and the printing head support part (3) and be provided with spring (22), the middle part guide board (31) that described print needle (2) passes on the printing head support part (3) exposes from front end guide board (32), described armature (10) top is placed with reed (12), felt (13) and base plate (14), base plate (14) are provided with the press strip (1) that is connected on the printing head support part (3).

2. a kind of needle type print head according to claim 1 is characterized in that: the most advanced and sophisticated top of described armature (9) is provided with adjusts pad (15).

3. a kind of needle type print head according to claim 1 is characterized in that: be provided with pad (11) between described flux path plate (8) and the armature seat (10).