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silkscreen printing machine Details:

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silkscreen printing machine :

1. Widely suitable for screen printing tshirts, garments, towel, lether,umbrella and backpack, etc.

2. The printing base and screen can be rotated, and screen plate can turn backward and forward, left and right, which makes the operation easier and postitioning more accurate.

3. Used for printing with heat set ink, rubber cement and other printing inks
silkscreen printing machine Feature:
The textiles color printing machine occupy the space is small, involving fewer manpower, and it’s easy to print color. It is widely used in clothing, CD fabric, bags, umbrellas, leather, etc. Table plate can be moved around, and the screen can also be around, the front screen can be adjusted.Easy adjusting - Mesh frame can be precisely set to correct position by turning screws of adjusting system on printing head.
Color steel press with stand.
Rotating base and brass bushings.
Consistent front, back, left, right, high and low makes it easy to use for multiple color prints.
There is literally no maintenance.
The head comes assembled & ready to attach to the base.
Location lock that helps lock the arm in place while in the printing position.
All Tubular Steel Construction.
Adjustable Screen Tension Hold Down.

The main characteristics and configuration
1, vertical structure.
2, the precision orbit printing oriented, driven lift into the inverter system.
3, compact design of the aluminum alloy nose, the sophisticated appearance orbital slider-oriented printing device.
4, Rigid aluminum printing platform, its surface hardness 600-700HV, X / Y precision fine-tuning.
5, dual photoelectric switch control, safe and reliable.
6, Screen adjustment between the PDB Edition and spacing of 0-50MM.
7, printing speed can be independently adjusted to double imports of Taiwan inverter.
8, ensure printing precision cylinder, pressure balanced and stable back to Mexico.
9, pneumatic off-grid.
10, squeegee and back to Mexico and adjustable angle.
11, mechanical combination lock screen frame.
12, machine with security guards.
Used in electronic appliances, advertising, packaging, printing, sports equipment, toys, stationery, gifts, metal processing, lens window, light-emitting chip (EL), plexiglass, conductive film circuit, LED screen printing.

silkscreen printing machine

silkscreen printing machine

silkscreen printing machine

silkscreen printing machine

silkscreen printing machine

silkscreen printing machine

A silkscreen printing machine having a large printing table and a stencil related thereto stretched across said table, said machine being provided with means for moving a squeegee relative to said stencil and for pressing printing ink through the stencil into a material to be printed upon placed on said table. During a printing sequence, and at least during the first and latter stages of said sequence when the squeegee is pressed into abutment with the stencil and when the stencil, located parallel with the printing table is caused to sag by its own weight to an extent such that the stencil at other regions than the engagement point of the squeegee should abut the material or the printing table, the stencil is arranged to adopt an oblique position relative to the printing table such that the angle between said stencil and said table at said squeegee engagement point exceeds 0°, meaning that the stencil abuts solely the material at the said engagement point. The movement of the frame is controlled by a plurality of operating rods, whose actuation is dependent upon movement of the squeegee and its position along the stencil.

What is claimed is:

1. A silkscreen printing machine, comprising:
a table;
a stencil mounted on a frame, said frame having first and second opposing ends;
support means for supporting said frame above said table;
a squeegee arranged above said stencil;
means for urging said squeegee against said stencil to press said stencil against and into contact with said table and for moving said squeegee relative to said stencil; and said support means including positioning means for vertically moving each of said ends of said frame relative to the table to position said frame at an

oblique angle relative to said table to thereby enable said stencil to be positioned at an oblique angle relative to said table at the point of contact of said stencil with said table, said positioning means including at least one rotatable arm connected to said first end of said frame, at least one rotatable arm connected to said second end of said frame, means for rotating said rotatable arms, and means for transforming a rotational motion of said rotatable arms into independent vertical motion of said first and second ends of said frame.

2. The silkscreen printing machine according to claim 1 wherein said transforming means includes: a rod, a first end of which rod is pivotably connected to each said at least one rotatable arm; and a connecting arm, a first end of which is fixed to an end of said frame, and a second end of which is pivotably connected to a second end of said rod.

3. The silkscreen printing machine according to claim 1 wherein said frame is pivotably mounted.

4. A silkscreen printing machine, comprising:
a table;
a stencil mounted on a frame, said frame having first and second opposing ends;
support means for supporting said frame above said table;
a squeegee arranged above said stencil;
means for urging said squeegee against said stencil to press said stencil against and into contact with said table and for moving said squeegee relative to said stencil; and said support means including positioning means for moving each of said first and second ends of said frame relative to said table to position said frame at an oblique angle relative to said table to thereby enable said stencil to be positioned at an oblique angle relative to said table at the point of contact of said stencil with said table, said positioning means including:
first and second pairs of connected rods, the rods of each pair being pivotably connected to one another;
a first arm, one end of which is connected to said first end of said frame and the other end of which is pivotably connected to one of said rods of said first pair of rods;
a second arm, one end of which is connected to said second end of said frame and the other end of which is pivotably connected to one of said rods of said second pair of rods; and means for imparting motion to said rods.

FIELD OF THE PRESENT INVENTION

The present invention relates to a printing machine arranged to apply a colour print to a material to be printed upon, and preferably, although not exclusively, to a silkscreen printing machine provided with a large printing table and a stencil related thereto. The stencil is firmly mounted or stretched in a frame arranged over the table. The printing machine is also provided with means for causing relative movement between a squeegee and the stencil, thereby, to press printing ink through the stencil against the material to be printed upon placed on said table.

DESCRIPTION OF THE PRIOR ART

It is normal in silkscreen printing machines that, when the stencil is not activated by the squeegee, the stencil is spaced from the material to be printed upon and resting on the printing table, through a distance designated "off-contact". This off-contact is preferably equal over the whole of the printing surface. Further, it is a necessary prerequisite if a distinct print is to be obtained, that the stencil is controlled by the squeegee in a manner such that it will only contact the material to be printed upon at the point of engagement of the squeegee with the stencil. If the stencil abuts the material to one side of this point of engagement of the squeegee, the print at these regions will be obscure, because the ink smears in the fabric of the material on the printing surface.

In the case of silkscreen printing machines having a stencil size of less than 2×3 meters, it has been found possible to maintain the desired off-contact without taking special measures. In the case of very small stencils, for example of 1×2 meters, the stencil material and ink-filling means hitherto used has not been encumbered with any problems in respect of maintaining the desired off-contact during the whole of the printing process, since the extent to which the stencil sags as a result of the weight of the stencil, and above all the weight of the ink, has been negligible and lies well within permitted tolerances, i.e. satisfactory off-contact is obtained.

None of the aforementioned problem is encountered in stencils up to 2×3 meters, since the extent to which the center part of the stencil hangs down under the weight of (a) the stencil material, (b) the stencil itself and (c) the ink, is still so small that a clearly defined print can be obtained when the squeegee is displaced, as a result of satisfactory off-contact.

OBJECTS OF THE PRESENT INVENTION

The present invention relates, however, to a silkscreen printing machine having a printing table, and a therewith related stencil, of such large magnitude that unless no measures are taken when the squeegee is displaced the stencil will lie against the material to be printed upon even in the regions externally of the engagement point of the squeegee, the result being an unclear print as a result of ink smearing on the printing surface.

Just how large a stencil must be before the present invention must, of necessity, be applied, is difficult to establish in size, since the critical size is dependent upon the amount of tension in the stencil, the material from which it is made, the material from which the stencil itself is made and the thickness of ink on the stencil. The invention, however, can be used to advantage with stencils over 2×3 meters in size.

The stencil may have a size of over 2×6 meters. It has been found that when a stencil of such a size is stretched in a frame in the conventional manner, the weight of the printing ink, the weight of the stencil material and the weight of the stencil itself cause the centre of the stencil to sag by 5-6 cm. In practice, this amount of sag renders a clear print impossible. If it is assumed that the stencil is arranged parallel to the printing table and the intrinsic weight of the stencil would cause it to sag to an extent such that the stencil contacts the material or the printing table at regions other than the point of engagement of the squeegee, an unclear or smeared print will result therefrom. This smeared print occurs mainly at the first stage and the last stage of the printing process.

The present invention proposes means whereby this problem can be overcome and an object of the present invention is to ensure that the print is clearly defined even when the stencil is of such size that the sagging of said stencil will render an clear print impossible without the provision of additional measures.

An object of the present invention is to provide means whereby the stencil and stencil frame can be pivoted about one or more pivot centers located at the center part of the frame, thereby to regulate the setting position of said stencil and said frame.

Another object of the invention is to provide means whereby in the first part of a printing sequence, the part of the frame in which the stencil is mounted located in the direction of movement of the squeegee is higher from the printing table than that part located opposite the said movement direction. On the other hand, it is also an object of the present invention that during the last part of said printing sequence, the part of the frame located in the direction of movement of the squeegee is lower down towards the printing table than that part which is located opposite said movement direction of said squeegee.

Thus, the object of the present invention is that when the squeegee is urged into abutment against the stencil, the stencil is arranged, through its frame, to adopt an oblique position relative to the printing table of such magnitude that the angle between the stencil and the printing table at the engagement point of the squeegee exceeds zero degrees at both sides of said engagement point.

Screen printing method of classification
Screen printing are usually two, namely hand-printing and printing machinery.
Hand-printed continuous paper refers to the collection of paper from the Indian version of the next move, scraping pull squeegee are hand operation.
Screen printing is how to classify it?
Screen printing is not only adapt to the general printing paper, and adaptability is very extensive. For example: ceramics, glass, printed circuit boards, etc. According to the texture of different substrates, printing on different, although each series is inextricably intrinsic link between, but to different substrate materials (ie different chemical and physical properties), each has its own particularity. So people usually divided according to different substrates: Paper type printing, plastic printing, ceramic printing, glass printing, printed circuit boards, metal printing, textile printing and other categories.