Small bead automatic coating device

Abstract

The invention belongs to a device forming liquid coating on the surface of a workpiece to make the workpiece contact with liquid, and in particular relates to a device forming dip coatings on decorating globules. The invention provides a completely automatic device forming dip coatings on globles, overcoming the drawbacks that the height of the prior device forming coatings on globules is manually adjusted, the adjusting precision is lower, thereby causing low rate of finished globules, and the worse quality stability; The device comprises a machine frame, a bracket of a arranging plate arranged on the top part of the machine frame, and a liquid painting plate, wherein the lower part of the liquid painting plate is provided with a support of the liquid painting plate, the central part of the bottom surface of the support of the liquid painting plate is connected with a piston rod in a cylinder, the other end of the cylinder is fixed on the machine frame, two sides of the lower side ofthe machine frame are provided with an air inlet cylinder and an air discharging cylinder, the top part of the machine is provided with a position sensor which is used to measure the liquid position in the liquid painting plate. The device can automatically adjust the rising and lowering height of the liquid, and the rising and lowering height can be controlled accurately, thereby after the globule being coated, the rate of finished products is high, and the quality stability is good.

Description

technical field [0001] The invention belongs to a device for contacting a workpiece with liquid to coat the surface of the workpiece with liquid, in particular to a device for dipping a coating on decorative beads. Background technique [0002] The Chinese patent number is ZL200410024245.4, the application date is June 3, 2004, and the name is "Automatic Bead Coating Equipment", which can automatically immerse the beads in the coating liquid, and the horizontal height of the arrangement plate can be adjusted. Automatic bead coating equipment, which uses a cam mechanism and an ejector rod matched with the cam to form a lifting device, and moves the lifting device through a driving device, so that the liquid coating plate can move up and down to complete the coating of beads. However, the use of this equipment for bead coating has certain defects: first, as the coating progresses, the height of the liquid in the liquid coating tray will gradually decrease. The length adjustme...

AI Technical Summary

Problems solved by technology

However, there are certain defects in the bead coating by using this equipment: First, as the coating progresses, the height of the liquid in the liquid coating pan will gradually decrease. The ejector rod length adjustment device is used for adjustment. In the process of manual adjustment, errors will inevitably occur, resulting in too large or too small depth of bead immersion in the coating solution.

When the depth of the beads immersed in the coating liquid is too small, it is necessary to continue to adjust the length adjustment device of the ejector rod; when the depth of the beads immersed in the coating liquid is too large, the coating liquid and the beads will stick to the alignment plate The bead is coated with the second coating method, that is, the bead is rotated after the first coating is completed and dried, and then the second coating is carried out. When the bead sticks to the glass, it cannot be made to stick to the glass. The beads on the glass are rotated and can only be removed directly from the alignment plate. After removal, scars will be produced on the surface of the beads. Such beads will become unqualified products. Therefore, this equipment is used to coat the beads Layer, the yield is not high, about 70%

In addition, as mentioned above, since the beads adopt the secondary coating method, there will be a re-coating area in the middle of the bead. Since the height of the coating liquid is manually adjusted, the range of the re-coating area is difficult to control , will produce a large recoating area on the surface of the bead, the surface of the bead is unevenly coated, and the surface after coating is prone to scars, so its quality stability is poor

To sum up, when using this equipment to coat small beads, the yield is not high, and the quality stability is poor, and it does not achieve complete "automatic"

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