JPH06219B2 - Coating device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a coating device, more specifically, an irregular shape of a powder adhesive by an electrophotographic method, for example, various cutting cloths having different shapes in plan view (planar shape). The present invention relates to a coating device that can be coated with a desired pattern and fixed.

[Prior art]

As a method of applying the powder adhesive to a flat object to be coated such as a cutting cloth, the surface of the uniformly charged photoreceptor is exposed to form an electrostatic latent image having a desired pattern, and the electrostatic latent image is formed on the electrostatic latent image. A powder adhesive having an opposite electric charge is attached by electrostatic attraction to form a visible image of the powder adhesive corresponding to the above pattern, and then a powder adhesive forming the visible image is clothed. Alternatively, the powder adhesive is applied to a knit product (object to be coated) by electrostatic attraction and then fixed.
A coating method using an electrophotographic method is known (Japanese Patent Laid-Open No. 61-47776).

The coating method described in the above publication can apply a small amount of a wide variety of adhesives even when forming an adhesive interlining, since it is possible to apply an adhesive at a required concentration to a required portion on fabrics of various shapes and sizes. It is an extremely effective method that can be sufficiently applied to the adhesion processing of.

[Problems to be solved by the invention]

However, when applying the powder adhesive in a predetermined pattern determined for each planar shape (type) to various kinds of coated objects such as cutting cloths having different planar shapes, The surface of the photoconductor is identified and exposed with a predetermined exposure pattern determined for each plane shape (type), and then the powder adhesive adhered to the position corresponding to the exposure pattern is accurately measured. Transfer to different positions,
Next, fixing is required, but it is difficult to accurately carry in and feed the soft object to be coated such as a cutting cloth to a predetermined position. The application of adhesive has not been fully achieved. Therefore, it has been desired to develop a coating device that can easily and accurately coat the powder adhesive on a predetermined pattern of a desired type of object to be coated.

Therefore, an object of the present invention is to provide a plurality of types of objects having different planar shapes, even if the objects to be coated are soft materials such as a cutting cloth, a predetermined value determined for each type. An object of the present invention is to provide an application device that can apply a powder adhesive in a pattern easily and accurately.

[Means for Solving the Problems]

The present invention has achieved the above object by providing the following coating apparatus.

A powder adhesive having opposite charges is attached to an electrostatic latent image formed on the surface of the photoconductor by exposing the photoconductor uniformly charged by corona discharge to a predetermined pattern. And a coating means for applying a powder adhesive in a predetermined pattern by bringing an indefinite object to be coated close to the image and transferring the image to the object to be coated, And a shape / position recognizing means is provided on the carry-in side of the transfer section, and the shape / position of the applied material is recognized. It is recognized based on the shape data registered by the means, the position deviation amount from the reference position of the object to be coated is calculated based on this recognition, the exposure position is corrected based on the position deviation amount, and registered. The surface of the photoconductor is corrected according to the exposure pattern data. A coating device configured to be capable of exposing exposed positions.

Incidentally, the "object to be coated of an amorphous shape" to be coated by the device of the present invention mainly means various flat cutting cloths having different planar shapes, but is not limited to this, and is not limited to this. Any shape may be used as long as the adhesive is applied in a predetermined pattern according to the planar shape.

[Action]

In the present invention, the shape and position recognizing means recognizes the shape (type) of the carried-in object to be coated, selects an exposure pattern determined for the kind, and at the same time, from the reference position of the object to be coated. Is calculated and the exposure position is corrected based on the amount of positional deviation, the powder adhesive is applied in a pattern determined for each type regardless of the material of the object. It is possible to accurately perform at a predetermined position.

〔Example〕

Hereinafter, a coating apparatus according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a schematic configuration diagram of the coating apparatus according to the present embodiment. The coating apparatus according to the present embodiment includes an electrophotographic coating means, which will be described in detail below, and a transport unit for loading and unloading an object to be coated. ,
The electrostatic transfer coating device is provided with a shape / position recognition means for recognizing the shape of an object to be coated and its position, which is provided in the transport section, as its basic constituent elements.

First, a description will be given of an electrophotographic coating means. In FIG. 1, 1 is a photoreceptor having a three-layer structure in which cadmium sulfide (CdS) is coated on the surface of an aluminum drum, and PET (polyester) is shrunk and laminated thereon. A photosensitive drum having a layer and rotating in the direction of the arrow, 2 is a charging unit for uniformly charging the surface of the photosensitive drum 1 by wire corona discharge, and 3 is a He-Ne laser, and the surface of the photosensitive drum 1 is arbitrarily set. The exposure head 4 for forming an electrostatic latent image of the pattern by exposure is a developer (not shown) formed by mixing a powder adhesive and a carrier (iron powder) by a magnetic brush method using a magnet roll 4a. The developing unit 5 for adhering the electrostatic latent image to the electrostatic latent image by means of the electrostatic latent image and the developing unit 5 for developing the electrostatic latent image onto the surface of the photosensitive drum 1 by electrostatic attraction. 6 is a fixing portion for thermally fixing the transferred powder adhesive to the above-mentioned object by the heat roll 6a, and 7 is a residual potential charged on the photosensitive drum 1 by AC corona discharge. An erasing unit 8 for erasing is a cleaning unit for removing the powder adhesive remaining on the photosensitive drum 1 by the brush roll 8a.

In this embodiment, a carrying conveyor (carrying section) A on the carry-in side and a carrier on the carry-out side for feeding the cut cloth (material to be coated) shown at 9 to the transfer position of the coating means composed of 1 to 8 described above. Conveyors (conveyance units) B are installed respectively.

Above the carrying-in conveyor A on the carrying-in side, a one-dimensional CCD which is a shape / position recognition means for recognizing (identifying, detecting) the shape and position of the cut cloth 9 carried in.
(Image sensor) A camera 10 is provided.

Further, in the figure, 11 is a shape / positional deviation calculating device for calculating the shape of the cloth 9 detected by the CCD camera 10 and the amount of deviation (X direction, Y direction, θ) from the reference position, and 12 is the laser exposure head. A coating pattern generator that outputs a coating pattern to 3; a control device 13 that controls the drive system and temperature of the coating device; and 14 a shape / position shift calculation device 11, a coating pattern generator 12, and a control device described above. It is a process management computer that communicates with the device 13 and controls and manages the entire coating process.

Further, in the figure, reference numeral 15 is a coating pattern forming workstation which can use CAD software for forming the outer shape pattern of the cutting cloth 9 and the coating pattern, and 16 is a floppy disk for storing the prepared data.

The coating apparatus of the present embodiment described above will be described in more detail, and the operation of the coating apparatus will be described.

The coating means described above uses an electrophotographic system, more specifically, an electrophotographic system such as the Carlson method, and the charging unit 2 includes a clear light, a first corona charger, and a second corona charger.

The clear light is formed by arranging miniature electric bulbs in series, and has a light amount that does not affect the surface potential of the first corona charger. Further, for example, a voltage of DC (direct current) +6 KV is applied to the wire of the first corona charger to charge the surface of the photosensitive drum 1 to about +2.0 KV, and the wire of the second corona charger is charged. AC (AC) about 5K
By applying a voltage of V and a voltage of DC-800V to the frame, the surface potential of the photosensitive drum 1 can be uniformly changed to about -400V.

When the photoconductor drum 1 rotates and the surface of the photoconductor drum 1 uniformly charged to the above-mentioned surface potential state reaches below the scanning line of the laser exposure head 3, it is output at 4 dots / mm, for example. Surface potential of the exposed area is about +5
Although it rises to 00V, the final exposed portion maintains a state of about -400V. Therefore, the laser exposure head 3 outputs laser light in a desired pattern dot by dot to form an electrostatic latent image having a potential difference of about 900 V on the photoconductor drum 1 with dots arranged corresponding to the pattern. It is possible to

Then, when the photosensitive drum 1 is further rotated, the portion of the photosensitive drum 1 on which the electrostatic latent image is formed reaches the developing section 4 and is brought into contact with the developer. This developing unit 4
A developer obtained by mixing a powder adhesive and a carrier (iron powder) adheres to the magnet roll 4a, and as the magnet roll 4a rotates, the developer circulates while contacting the photosensitive drum 1. Therefore, the powder adhesive is negatively charged by frictional charging with iron powder. Therefore, when the developer comes into contact with the electrostatic latent image as described above, the negatively charged powder adhesive is attached to the positively charged portion of the electrostatic latent image by electrostatic attraction, and a visible image is formed by the powder adhesive. To be done. At that time, the iron powder is collected by the magnetic force of the magnet roll 4a without being attached to the photosensitive drum 1, and is recycled and reused.

The photosensitive drum 1 further rotates, and the powder adhesive coating pattern (visual image) adhered only to the positively charged portion of the electrostatic latent image.
Is brought into contact with the cutting cloth 9 conveyed by the conveyor A at the transfer section 5. At this time, a voltage of DC + 3.5 KV, for example, is applied to the conductive brush roll 5a to positively charge the cutting cloth 9 so that the coating pattern corresponding to the visible image of the powder adhesive is generated by electrostatic attraction. The powder adhesive is transferred to the cutting cloth 9.

The cutting cloth 9 on which the powder adhesive has been transferred in this manner is conveyed to the fixing unit 6 by a conveyor and is passed under the heat roll 6a set at 200 ° C. to heat-fix the powder adhesive transferred. Is done.

After the transfer, the photoconductor drum 1 continues to rotate, and the powder adhesive remaining on the surface of the photoconductor drum 1 without being transferred after being discharged by the discharging corona discharge of AC5KV in the charge removing corona discharge, In the cleaning unit 8, the brush roll 8a is rotated to knock it off. The surface of the photosensitive drum 1 thus cleaned moves to the charging section 2 again and moves to the next step of applying the powder adhesive to the new cutting cloth 9. By repeating the above operation, it is possible to apply the powder adhesive to a large number of cutting cloths 9 with a predetermined pan.

In the present embodiment, in the coating pattern forming workstation 15, the outer shape and the powder of the cutting cloth 9 and the powder are put in an area of, for example, 500 mm × 700 mm (4 dots / mm → 2000 dots × 2800 dots) by CAD software. An adhesive application pattern is created in advance. The created pattern and position data are registered in 16 floppy disks, and the floppy disks 16 are stored in the hard disk of the process control computer 14.
It is used as data for process control described in detail below.

As described above, the cutting cloth outer shape data registered in the floppy disk stored in the process control computer 14 is transmitted to the shape / position shift calculating device 11 via the communication interface, and the coating pattern data is generated. It is transmitted to the device 12 and performs the following control.

That is, the control device 13 causes the transfer conveyor A on the loading side.
And the cutting cloth 9 placed on the conveyor A.
Is moved at, for example, 70 mm / sec, and is passed under the visual field scanning line of the one-dimensional CDD camera (shape / position recognition means) 10 arranged above to identify the planar shape of the cutting cloth 9, And the position where it is mounted is detected. Then, by comparing the identified and detected shape and position with the shape and reference position created by the coating pattern creation workstation 15, the type of the cutting cloth 9 is identified and the shape from the reference position is determined. The amount of displacement is calculated. The calculation of the position shift amount is performed by calculating the shift amount of the center of gravity position (vertical,
Lateral) and the amount of deviation of the inertial spindle (rotational deviation) are calculated. At that time, the tip of the cutting cloth 9 is detected,
The position of the moving cutting cloth 9 is tracked and its management is performed at the same time.

Next, the data for specifying the cutting cloth 9 and the data for the amount of positional deviation thereof are transmitted to the coating pattern generator 12 via the communication interface. As a result, a predetermined coating pattern for the previously registered cutting cloth 9 is selected, at the same time the exposure position of the coating pattern is corrected, and the apparatus waits. By exposing the surface of the photosensitive drum 1 through the laser exposure head 3 according to the exposure pattern data, it is possible to accurately form an electrostatic latent image having the above pattern at the corrected position. After that, the powder adhesive is applied to the cutting cloth 9 in a predetermined application pattern and at an accurate position by passing through the above-mentioned steps such as development, transfer and fixing.

As described above in detail, according to the coating apparatus of the present embodiment, even if the cutting cloth 9 that is sequentially carried in is changed to another kind having a different shape, the kind is identified,
In addition, since the positional deviation can be corrected, it is possible to always apply accurately to a predetermined position of the cutting cloth 9 with a predetermined application pattern determined for the type.

Further, since the above-mentioned coating device can cure the cutting cloth 9 by applying and fixing an adhesive, it is possible to substitute various adhesive interlinings in the sewing process by controlling the coating pattern and the coating amount. There is also an advantage that

The present invention has been specifically described above based on the embodiments,
It goes without saying that the specific configuration of the coating apparatus of the present invention is not limited to that shown in the above-mentioned embodiment, and various modifications can be made without departing from the scope of the invention.

For example, the application means is not limited to the one using the electrophotographic method of the Carlson method, but may be another method such as the cascade method.

Further, in the above example, the case where the object to be coated is a cutting cloth was shown, but the present invention is not limited to this, and it can be applied to various things such as non-woven fabric, paper, film, etc. as long as it has a flat shape. Is.

〔The invention's effect〕

The coating device of the present invention is determined for each type of coating material having various planar shapes, even if the coating material is a soft material such as a cutting cloth which is not stiff. The powder adhesive can be applied easily and accurately in a predetermined pattern.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a coating apparatus that is an embodiment of the present invention. 1; Photoconductor drum 2; Charging unit 3; Laser exposure head 4; Developing unit 5; Transfer unit 6; Fixing unit 7; Eliminating unit 8: Cleaning unit 9; Cutting unit 10; One-dimensional CCD camera 11; Shape / position shift Arithmetic device 12; Coating pattern generator 13; Control device 14; Process management computer 15; Coating pattern creating workstation 16; Floppy disk A, B; Conveyor conveyor

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location G03G 15/22 109 6830-2H

Claims (1)

[Claims] 1. A photosensitive member uniformly charged by corona discharge is exposed in a predetermined pattern to attach an electrostatic latent image formed on the surface of the photosensitive member with a powder adhesive having an opposite charge. To form a visible image of the powder adhesive, bring an irregular-shaped coating object close to the visual image, and transfer the visual image to the coating object to apply the powder adhesive in a predetermined pattern. It has a coating means and a carrying section for loading and unloading the article to be coated, and a shape / position recognizing means is provided on the loading side of the transport section, and the loaded article to be coated is It is recognized based on the shape data registered by the shape / position recognizing means, the displacement amount from the reference position of the object to be coated is calculated based on this recognition, and the exposure position is determined based on the displacement amount. According to the corrected and registered exposure pattern data, the photoconductor An applicator characterized in that it is adapted to expose a modified position of the surface.