CN201544538U

CN201544538U - Adjustable needle printing head

Info

Publication number: CN201544538U
Application number: CN2009202015203U
Authority: CN
Inventors: 古宇
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-11-26
Filing date: 2009-11-26
Publication date: 2010-08-11
Anticipated expiration: 2019-11-26

Abstract

The utility model relates to an adjustable needle printing head, which comprises a base, a needle bed vertically arranged on the base, a print needle arranged at the tail end of the needle bed, a roller bracket and a roller, wherein first strip-shaped holes vertically distributed are formed on the roller bracket, and round holes are formed on the needle bed in the positions corresponding to the first strip-shaped holes; screw bolts penetrate the strip-shaped holes on the roller bracket and the round holes on the needle bed, so that the roller bracket can be detachably arranged on one side of the needle bed; and the roller is arranged on the side surface of the roller bracket close to the head part of the printing head. Compared with the prior art, in the adjustable needle printing head, the roller bracket can be vertically adjusted opposite to the needle bed in the length direction of the strip-shaped holes, that is, the upper and lower positions of the roller bracket opposite to the needle bed can be adjusted, thereby easily and conveniently achieving height adjustments of the roller without replacing any components, and reducing the using cost of a printer.

Description

A kind of adjustable needle type print head

Technical field

The utility model relates to a kind of needle type print head, relates in particular to the adjustable for height needle type print head of a kind of roller.

Background technology

Needle type print head is the core component of impact printer, during printer work, and the frequent mobile working of printhead, its structure, performance and reliability directly influence the overall work quality of printer.At present, needle type print head generally comprises pedestal, be arranged on the pedestal guide board with and on print needle, be arranged on the roller of guide board one side, the axle center of roller is horizontally installed on the pedestal, during work, the head of print needle downwards and towards colour band, the edge of roller is a little less than the print needle head, like this, the edge of roller can be followed moving of whole printhead and be rolled on printing surface, and keeps a stable spacing between the head of assurance print needle and the printing surface.

Because needle type print head is in real work, be in frequent mobile status exactly, the edge of the roller printing surface that constantly rubs, in the course of time, wear phenomenon can appear in the edge of roller, the diameter of roller is diminished, make the bottom at roller edge approach to flush with the head of print needle, like this, the head of print needle and printing surface spacing are too short, directly cause the reduction of print quality, and increase the weight of the abrasion condition of print needle head, when situation is serious, even can make the colour band under the print needle head touch printing surface, cause and to carry out normal print job.At this situation, present way is to replace with new roller, makes the bottom sides of roller return to normal height spacing along the head with print needle.

In addition, the head of print needle in the course of the work also can fair wear and tear, like this, the head of print needle and printing surface spacing are long, also promptly, the bottom sides of roller also can directly cause the reduction of print quality along excessive with the height spacing of print needle head, when situation was serious, the blank phenomenon of printing can appear.At this situation, present way is the print needle that more renews, and makes the head of print needle and the bottom sides edge of roller return to normal height spacing.

But, the cost of changing roller or print needle is higher, because the wear phenomenon of roller and print needle is inevitably, this is particularly outstanding in the frequent working environment of bill printings such as bank, accounting office, it is more frequent more to change jobs, and can improve the use cost of printer undoubtedly greatly.

Summary of the invention

Technical problem to be solved in the utility model is to provide a kind of adjustable needle type print head at the present situation of prior art, its apparatus structure is simple, and the adjustable height of roller can reduce the use cost of printer, and the height adjusting work of roller is simple, easy and simple to handle.

The utility model solves the problems of the technologies described above the technical scheme that is adopted: the needle type print head that this is adjustable, comprise pedestal, vertically be arranged on the needle stand on the pedestal, be arranged on the print needle of needle stand end and be arranged on needle stand one side roller free to rotate, it is characterized in that: the rolling wheel support that also comprises sheet, offer the first strip hole of vertical distribution on this rolling wheel support, and, be provided with circular hole in the position in the corresponding first strip hole on the described needle stand, the strip hole and the circular hole on the needle stand that pass on this rolling wheel support by bolt removably are sticked in a side of needle stand rolling wheel support, and described roller just is arranged on this rolling wheel support near on the side of print needle head.

For the running that makes roller and walking more steady, preferably, the described rolling wheel support structure that can be centrosymmetric, the central shaft of roller promptly is positioned on the center line of rolling wheel support, and the described first strip hole left and right symmetrically is provided with two.

Described roller can be arranged on the side of rolling wheel support in every way, as long as it can freely be rotated by the counter roller support, and its edge expose to rolling wheel support and when real work the edge can get final product a little less than the head of print needle, but for ease of processing and manufacturing, preferably, the central shaft of described roller can be connected as a single entity with described rolling wheel support, makes that also the rotation of roller is steady more, reliable.

As further improvement, a tingle can also be sticked on the opposite side of counter roller support on the described needle stand, this tingle comprises a top and two lower parts that are connected as a single entity, top has the sidepiece of two way roller holder orientation bendings and is clipped in the both sides of needle stand end, two lower parts are extended downwards respectively and are formed by two sidepieces in the top, described rolling wheel support is pressed close in the side of each lower part, and, each side, lower part of tingle is provided with a screw, correspondingly, also be provided with the second strip hole of a pair of vertical distribution on the described rolling wheel support symmetrically, the second strip hole and the screw on the tingle lower part that pass on the rolling wheel support by screw make both fixing together, make tingle play the effect of strengthening the fixed idler whell support, prevent the shake of roller.

For ease of the location of tingle on needle stand, the both sides of described needle stand end can respectively be provided with a small embossment, and the card that respectively is provided with of two sidepiece correspondences that the tingle middle and upper part is divided is established the hole, and small embossment is positioned at intermediate plate on the needle stand with regard to being embedded in corresponding card and establishing in the hole.

Compared with prior art, advantage of the present utility model is: by one rolling wheel support being set and the strip hole is set on rolling wheel support in needle stand one side, make rolling wheel support can do the upper-lower position adjustment of relative needle stand along the length direction in its strip hole, because the length direction in strip hole is vertical in the rolling wheel support, also be the Height Adjustment direction of roller, adjust the upper-lower position of the relative needle stand of rolling wheel support, just can adjust the height of the relative print needle of roller, thereby, under the situation of roller or print needle appearance wearing and tearing, only need unscrew bolt, together with the length direction downwards slightly inching of roller along the strip hole, can make the edge of roller be returned to normal height again rolling wheel support, the bottom sides that makes roller is along readjusting the position that is lower than the print needle head, easily realized the Height Adjustment of roller easily, and need not to change any parts, can reduce the use cost of printer, and, apparatus structure is simple, and operation is simple in adjusting.

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment;

Fig. 2 is Fig. 1 structural representation from another viewpoint;

Fig. 3 is the three-dimensional exploded view of the utility model embodiment;

Fig. 4 is the structural representation of rolling wheel support among the utility model embodiment.

The specific embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

As Fig. 1～shown in Figure 4, the needle type print head that this is adjustable, comprise pedestal 1, vertically be arranged on needle stand 2 on the pedestal 1, be arranged on the print needle 3 on needle stand 2 distal end faces, the rolling wheel support 4 that is arranged on the sheet of needle stand 2 one sides, the tingle 5 that is arranged on needle stand 2 opposite sides and a roller 6 that vertically is provided with;

Wherein, described needle stand 2 is integrally manufactured with pedestal 1, is connected with data-interface 11 on the pedestal 1, the pedestal 1 outer fin 12 that also is provided with;

Described rolling wheel support 4 structure that is centrosymmetric, the central shaft 61 of roller 6 vertically is arranged on the lateral surface of rolling wheel support 4 relatively and is positioned on the center line of rolling wheel support 4, and, the central shaft 61 and the rolling wheel support 4 of roller 6 are connected as a single entity, roller 6 is located in a side of rolling wheel support 4, the position of close print needle 3 heads, and it is free to rotate, the needle type print head that this is adjustable is when real work, the head of print needle 3 down, placement direction to that indicated in the drawings is inverted, and the edge of roller 6 is a little less than the head of print needle 3;

Have two first strip holes 41 on the described rolling wheel support 4 symmetrically, the length direction in this first strip hole 41 is vertical, promptly the adjustment direction with roller 6 height is consistent, and, be provided with circular hole 21 in the position in the corresponding first strip hole 41 on the described needle stand 2, pass circular hole 21 corresponding on strip hole 41 on this rolling wheel support 4 and the needle stand 2 respectively by two bolts 7, and rolling wheel support 4 removably is sticked in a side of needle stand 2;

And described tingle 5 is oppositely arranged with rolling wheel support 4, this tingle 5 comprises a top 51 and two lower parts 52 that are connected as a single entity, top 51 is the U type and has the sidepiece 51a of two way roller support 4 directions bending and be clipped in the both sides of needle stand 2 ends, and, the both sides of needle stand 2 ends respectively are provided with a small embossment 22, and the card that respectively is provided with of two sidepiece 51a correspondences on top 51 is established hole 51b, and small embossment 22 just is embedded in corresponding card and establishes in the 51b of hole;

Two lower parts 52 of tingle 5 are extended downwards respectively and are formed by two sidepiece 51a in the top 51, described rolling wheel support 4 is pressed close in the side of each lower part 52, and, each 52 side, lower part of tingle 5 are provided with a screw 52a, correspondingly, also be provided with a pair of second strip hole 42 on the described rolling wheel support 4 symmetrically, the length direction in this second strip hole 42 also is vertical, pass the second strip hole 42 on the rolling wheel support 4 and the screw 52a on tingle 5 lower parts 52 respectively by two screws 8, and make rolling wheel support 4 fixing with tingle 5.

During practical set, the first opposite side of the needle stand 2 that whole tingle 5 is folded in, specifically: two sidepiece 51a on top 51 are firmly pressed to needle stand 2, make small embossment 22 on the needle stand 2 be embedded among two sidepiece 51a corresponding card and establish in the 51b of hole, thus tingle 5 is spacing on needle stand 2; Then will be fixing by screw 8 with tingle 5 by the rolling wheel support 4 of last roller 6, note regulating the height and position of the bottom sides of roller 6 when tightening screw 8 along relative print needle 3, at last, bolt 7 passes the first strip hole 41 on the rolling wheel support 4 and the circular hole 21 on the needle stand 2 successively, whole printhead is fixed on printer, make rolling wheel support 4 be fixed on a side of needle stand 2 simultaneously, also, bolt 7 plays the effect of while energy fixed idler whell support 4 and whole printhead.

Claims

1. adjustable needle type print head, comprise pedestal, vertically be arranged on the needle stand on the pedestal, be arranged on the print needle of needle stand end and be arranged on needle stand one side roller free to rotate, it is characterized in that: the rolling wheel support that also comprises sheet, offer the first strip hole of vertical distribution on this rolling wheel support, and, be provided with circular hole in the position in the corresponding first strip hole on the described needle stand, the strip hole and the circular hole on the needle stand that pass on this rolling wheel support by bolt removably are sticked in a side of needle stand rolling wheel support, and described roller just is arranged on this rolling wheel support near on the side of print needle head.

2. adjustable needle type print head according to claim 1 is characterized in that: the described rolling wheel support structure that is centrosymmetric, the central shaft of roller promptly is positioned on the center line of rolling wheel support, and the described first strip hole left and right symmetrically is provided with two.

3. adjustable needle type print head according to claim 1 is characterized in that: the central shaft of described roller and described rolling wheel support are connected as a single entity.

4. according to claim 1 or 2 or 3 described adjustable needle type print heads, it is characterized in that: a tingle also has been sticked on the opposite side of counter roller support on the described needle stand, this tingle comprises a top and two lower parts that are connected as a single entity, top has the sidepiece of two way roller holder orientation bendings and is clipped in the both sides of needle stand end, two lower parts are extended downwards respectively and are formed by two sidepieces in the top, described rolling wheel support is pressed close in the side of each lower part, and, each side, lower part of tingle is provided with a screw, correspondingly, also be provided with the second strip hole of a pair of vertical distribution on the described rolling wheel support symmetrically, the second strip hole and the screw on the tingle lower part that pass on the rolling wheel support by screw make both fixing together.

5. adjustable needle type print head according to claim 4, it is characterized in that: the both sides of described needle stand end respectively are provided with a small embossment, and the card that respectively is provided with of two sidepiece correspondences that the tingle middle and upper part is divided is established the hole, and small embossment just is embedded in corresponding card and establishes in the hole.