CN204472137U - High accuracy wide format printer - Google Patents

Abstract

The utility model provides a kind of high accuracy wide format printer, be different from tradition to be conceived to improve wide format printer output medium supply uniformity to overcome the mode of printing error, the beneficial effects of the utility model are: by the platen follower in transformation wide format printer self power mechanism, by increasing its size in right amount thus strengthening wide format printer dynamic friction power, effectively eliminate uncared-for actuating unit slippage problems in wide format printer work, thus paper feed error in length is controlled print length ± about 0.1% take into account the problem that output medium is damaged simultaneously, well meet the demand of splicing application after several air brushing product are schemed in wide format printer spray.

Description

High accuracy wide format printer

Technical field

The utility model relates to large-scale spray drawing apparatus field, refers in particular to a kind of high accuracy wide format printer.

Background technology

Wide format printer and spray drawing machine similar, it is all a kind of large-scale ink-jet printer, but wide format printer is the characteristic that piezoelectric ink jet technology make use of electric discharge when crystal pressurizes due to what adopt, therefore it easily realizes the high accuracy print quality of 1440dpi, therefore it is based on printing paper gum PP as output medium, is mainly used in the making of spray figure on the indoor air brushing product such as poster, Graphic Panel, picture poster, placard, rules and regulations.

But wide format printer is only for spraying figure single width works time in existing application mostly, its excellent performance is not accommodating doubts.But in practical application, also exist and such as the demand of air brushing product is sticked to the such as large format such as subway passageway, platform metope, ground, due to the restriction of wide format printer fabric width, in order to adapt to large format application, can only be spliced by the later stage again and solved by picture being divided into multiple air brushing works.

But because wide format printer itself is not multiple plate splicing and designing, its printing precision only can guarantee that single width works deflection is unlikely to too high, then exists between image there is uncontrollable compression of images, tensile deformation to the spray figure of multiple image after large format segmentation.According to test, the picture that multiple air brushing product it spray figure under splicing state often produces the picture skew of at least 10-20mm, even if this just makes large format application split be difficult to realize or to realize picture mosaic vestige reluctantly clearly ugly, user demand cannot be met.

Such as, rowland FJ-540/740 series wide format printer is the mark post product of Japanese rowland (Roland) company of the pioneer in the industry adopting variable ink droplet technology in wide cut printing market at first.Both FJ-540/740 wide format printers project organization is identical, the main distinction is that both print fabric width one and support 210-1361mm, another then supports 210-1869mm, FJ-540/740 wide format printer structurally intactly remains designing and producing of self precision of Roland machine, and print speed thrilling reach tens meters per hour, this makes the serial wide format printer of FJ-540/740 two be widely used in advertisement and identifier label, description air brushing, outdoor advertising, plate making, home decoration, industrial design, photo studio image, Digital Dyeing, arts reproduction, the industry fields such as handicraft processing.

But even rowland FJ-540/740 wide format printer, its design nominal paper feed length accuracy also can only reach: error is less than ± 0.3mm or print length ± 0.3%, get both the greater.As everyone knows, wide format printer is owing to using paper roll, and its single width air brushing product length can be very long, and therefore when super large breadth is applied, once length rises, its frame offset will sharply increase.Such as, if when air brushing product reach 10 meters, according to its design error ± 0.3%, between the air brushing product of two batch of spray figure, error will reach 30mm.Visible, even existing superior rowland FJ-540/740 wide format printer, its uniformity often criticizing printed drawings picture also exists not high-leveled and difficult with the defect meeting user demand.

Utility model content

Technical problem to be solved in the utility model is: improve wide format printer spray figure spray product side-play amount, to adapt to the application demand of many air brushing product spray figure.

In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is:

The utility model relates to a kind of high accuracy wide format printer, and described platen follower diameter is 8.05-8.27mm.

In above-mentioned, described platen follower diameter is 8.07-8.20mm, has roller bearing in the axle center of platen follower is one-body molded, described roller bearing diameter 3.00mm ± 0.02mm.

In above-mentioned, described platen follower is made up of TPU; Sandblasting layer is formed in platen follower lateral surface sandblasting stone.

In above-mentioned, described platen follower is by the TPU of 50-90% mass ratio, and the sandstone of 10-50% mass ratio is composited.

In above-mentioned, described sandstone is quartz sand, diamond dust at least one.

Be different from tradition to be conceived to improve wide format printer output medium supply uniformity to overcome the mode of printing error, the beneficial effects of the utility model are: by the platen follower in transformation wide format printer self power mechanism, by increasing its size in right amount thus strengthening wide format printer dynamic friction power, effectively eliminate uncared-for actuating unit slippage problems in wide format printer work, thus paper feed error in length is controlled print length ± about 0.1% take into account the problem that output medium is damaged simultaneously, well meet the demand of splicing application after several air brushing product are schemed in wide format printer spray.

Accompanying drawing explanation

Below in conjunction with accompanying drawing in detail concrete structure of the present utility model is described in detail

Fig. 1 is the Facad structure schematic diagram of wide format printer;

Fig. 2 is the side structure sectional view of wide format printer;

Fig. 3 is the platen follower close-up schematic view of wide format printer;

Fig. 4 is the platen follower specific embodiment structural representation of wide format printer.

100-wide format printer; 101-roller bearing; 1-platen driving wheel; 2-platen follower; 201-TPU; 202-sandstone.

Detailed description of the invention

By describing technology contents of the present utility model, structural feature in detail, realized object and effect, accompanying drawing is coordinated to be explained in detail below in conjunction with embodiment.

In order to solve the problem in background technology, the operation principle of applicant to wide format printer conducts in-depth research.As Fig. 1-3, first, because wide format printer output medium in spray figure process itself does not possess mobile power, the platen driving wheel 1 that power resources are arranged in wide format printer 100, platen driving wheel 1 is coordinated to be provided with platen follower 2, output medium is being placed into after on platen driving wheel, after putting down platen follower, clamp output medium thus formation drawing force.Further, paper feed length accuracy error can be produced why by studying carefully its spray figure process, pinpointing the problems and deriving from two: (one) results from the error of equipment self power mechanism; (2) error brought of output medium supply factor.Wherein, owing to relating to, first to exist to the transformation of equipment that design difficulty is large, cost height problem, therefore can set about improving from second point as conventional design thinking.The problem of above-mentioned second point is specifically because output medium length is longer, therefore be often be arranged on below wide format printer in the mode of rolling, its outer end input wide format printer mode realizes continuous spraying figure operation by its dragging, and the output medium of rolling surplus output medium coil diameter in consumption process can change, be reflected in wide format printer end and output medium can change along with spray figure process to the reaction force of platen follower, namely the tractive torque of output medium volume in figure process is sprayed unanimously in change, and existing wide format printer exports at output medium volume tractive force the meter adopting the platen driving wheel of open loop to coordinate platen follower, namely say from principle, once output medium is extruded by platen follower and platen driving wheel, due to frictional force=active force (corresponding platen driving wheel and platen follower extrude the power of output medium here) * coefficient of friction, wherein coefficient of friction is set by the material on platen driving wheel and platen follower and output medium two sides, therefore by strengthening frictional force to eliminate because the design of the traction reaction force brought in rolling output medium consumption process cannot realize theoretically.And the tractive torque of fixing frictional force correspondence variation just result in wide format printer and constant tractive force cannot be provided to export to output medium.For this reason, also there is many improvement trial to wide format printer in industry, as: for wide format printer paper bowl installs an active paper advance mechanism etc. additional, by pulling out output medium in advance from package output medium thus avoiding the impact that brings due to radius change, but it is effectively still undesirable, only paper feed error in length can be controlled print length ± about 0.2%, still cannot meet the demand of large format splicing.

For this reason, applicant, by after a large amount of transformations to wide format printer entirety, pilot scale study, has finally found that paper feed error in length controls best and transforms technology easily, i.e. the utility model content by one.

As Figure 1-3, the utility model additionally provides a kind of high accuracy wide format printer, and wide format printer 100 includes platen follower 2; Described platen follower 2 diameter is 8.05-8.27mm.

Wide format printer remodeling method of the present utility model by experiment repeatedly find to solve paper feed error in length best point of penetration should from above-mentioned problem originate (one) start with, namely elimination results from the error of equipment self power mechanism.And the main error of equipment self power mechanism is on platen driving wheel and platen follower, though the analysis that in conventional principle analysis, output medium is extruded rear frictional force set by platen follower and platen driving wheel is errorless, but it ignores in practical work process platen follower, can there is the problem of skidding between platen driving wheel and output medium due to the traction reaction force of output medium, exactly because there is uncontrollable compression of images, tensile deformation problem between the air brushing product that also this situation just result in final spray figure.According to the experiment repeatedly of applicant, discovery increases platen follower, the extruding force of platen driving wheel can well overcome three's slippage problems.But consider platen driving wheel normally most crucial precise part for wide format printer, its dismounting and improvement cost too high, therefore transform set about from platen follower the most economical.But the extruding force of platen follower, platen driving wheel is not the bigger the better, because wide format printer principle is by ink air brushing on output medium, therefore excessive extruding force can damage output medium spray figure surface, finally causes scrapping of air brushing product.Therefore applicant is found by great many of experiments, usually to record on wide format printer after former platen follower diameter, correspondence is replaced after again manufacturing new platen follower after its radius is increased 0.08-0.15mm, its coordinate with platen driving wheel after extruding force of producing can well paper feed error in length be controlled print length ± about 0.1%, substantially can meet many air brushing product and splice the demand applied.

Concrete example:

Above-mentioned remodeling method is applied on existing rowland FJ-540/740 wide format printer:

Measurement procedure.Obtain former platen follower diameter on wide format printer, record diameter at about 7.90mm.

Platen follower preparation flow, increases 0.08-0.15mm by former platen follower radius, after prepare the new platen follower that diameter is 8.05-8.27mm;

Flow process changed by platen follower, and platen follower former on wide format printer is replaced by new platen follower.

Correctional effect is tested:

Visible, reduce wide format printer print error between several works by changing the platen follower of larger diameter.But when platen follower diameter increases too much, sharply can rise to the infringement of air brushing product, therefore excessively should not pursue frictional force and change the platen follower of larger diameter.

Embodiment 1:

In above-mentioned, described platen follower 2 diameter is 8.07-8.20mm, and one-body molded in the axle center of platen follower 2 have roller bearing 101, described roller bearing 101 diameter 3.00mm ± 0.02mm.

Find in conjunction with great many of experiments, when platen follower 2 diameter is in 8.07-8.20mm scope, corresponding rowland FJ-540/740 wide format printer first wife platen driving wheel 1 can obtain the relatively minimum and spray figure process of paper feed error in length and damage minimum optimum collocation to output medium.

Embodiment 2:

In above-mentioned, described platen follower 2 is made up of TPU201; Sandblasting layer is formed in platen follower lateral surface sandblasting stone 202.

As mentioned above, owing to increasing merely platen follower, the extruding force of platen driving wheel has and damages the risk of output medium, even and if by after the platen follower of selecting optimum above-mentioned size after fine optimization, its final air brushing product still do not reach most perfect condition in splicing.Further applicant has done further further investigation discovery with regard to eliminating the error resulting from equipment self power mechanism for this reason, in the transmission mechanism of existing wide format printer, because platen driving wheel is normally made up of hard metal material, consider cohesive for coordinating hard material simultaneously, what therefore existing platen follower all adopted be rubber tire but in reality rubber tire due to made of soft own, therefore in extrusion process, easily deformation is produced, easily skid on the contrary, meanwhile rubber tire is due to softer, therefore wearing and tearing also quickly, is an easily-consumed products in wide format printer work.Therefore, the present embodiment proposes further to transform platen follower, and its matrix is changed to harder TPU material, further forms sandblasting layer at its lateral surface sandblasting stone thus strengthens coefficient of friction, and then increasing the frictional force of platen follower side.And then after it is coordinated with platen driving wheel the extruding force that produces can well paper feed error in length be controlled print length ± about 0.05%, be well positioned to meet many air brushing product and spliced the demand applied.In addition the life-span of platen follower can rise to 2 years by original 1-2 month, wholely took turns the tolerance product become from easily-consumed products wide format printer, significantly reduced wide format printer operation cost.

Embodiment 3:

In above-mentioned, described platen follower is by the TPU of 50-90% mass ratio, and the sandstone of 10-50% mass ratio is composited.

The present embodiment based on thinking identical with embodiment 1, directly adopt TPU and sandstone bi-material to meet unlike platen follower and prepare.The platen follower obtained thus can have both the great friction coefficient advantage of the harder characteristic of TPU and sandstone.Its coordinate with platen driving wheel after extruding force of producing can well paper feed error in length be controlled print length ± about 0.05%, be well positioned to meet many air brushing product equally and splice the demand applied.The life-span of this platen follower same can rise to 2 years by original 1-2 month, wholely took turns the tolerance product become from easily-consumed products wide format printer, significantly reduced wide format printer operation cost.

On above-mentioned concrete exemplary basis, after the replacement in conjunction with material in the present embodiment, correctional effect is tested:

Embodiment 4:

In above-mentioned, described sandstone is quartz sand, diamond dust at least one.

The foregoing is only embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every utilize the utility model description and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.

Claims (4)

1. a high accuracy wide format printer, is characterized in that: comprise platen follower; Described platen follower diameter is 8.05-8.27mm.

2. high accuracy wide format printer as claimed in claim 1, is characterized in that: described platen follower diameter is 8.07-8.20mm, has roller bearing in the axle center of platen follower is one-body molded, described roller bearing diameter 3.00mm ± 0.02mm.

3. high accuracy wide format printer as claimed in claim 1, is characterized in that: described platen follower is made up of TPU; Sandblasting layer is formed in platen follower lateral surface sandblasting stone.

4. high accuracy wide format printer as claimed in claim 3, is characterized in that: described sandstone is quartz sand, diamond dust at least one.