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CN-121972366-A - Anti-blocking glue spraying head and glue spraying device based on coating and bionic structure

CN121972366ACN 121972366 ACN121972366 ACN 121972366ACN-121972366-A

Abstract

The invention provides an anti-blocking glue spraying head and a glue spraying device based on a coating and a bionic structure, relates to the technical field of glue spraying devices, and solves the problem of blocking of the glue spraying head; the anti-blocking glue spraying head comprises a glue spraying head main body, anti-sticking coatings are arranged on the inner surface of a glue spraying channel and the outer surface of a glue spraying port of the glue spraying head main body, and a bionic micro-texture based on the lotus leaf surface is arranged on at least the outer end surface of the glue spraying port. The bionic micro-texture based on the lotus leaf surface is arranged on the outer end face of the glue spraying port, so that glue residues are effectively reduced, blocking is prevented, liquid films and residues are prevented from being accumulated on the outer end face of the glue spraying port, blocking of the glue spraying channel is avoided, and the reliability and the service life of continuous operation of equipment are improved.

Inventors

  • WANG FUZENG
  • ZENG PENGHUI
  • Fan Erbin
  • JIANG FENG

Assignees

  • 华侨大学

Dates

Publication Date
20260505
Application Date
20260409

Claims (10)

  1. 1. The anti-blocking glue spraying head based on the coating and the bionic structure comprises a glue spraying head main body (1) and is characterized in that anti-sticking coatings are arranged on the inner surface of a glue spraying channel of the glue spraying head main body (1) and the outer surface of a glue spraying port (4), and at least the outer end surface of the glue spraying port (4) is provided with a bionic micro-texture (6) based on the lotus leaf surface.
  2. 2. The anti-blocking spray head based on a coating and a bionic structure according to claim 1, wherein the coating is a polytetrafluoroethylene coating or a teflon coating.
  3. 3. The anti-blocking glue spraying head based on the coating and the bionic structure according to claim 1 or 2, wherein the bionic micro-texture (6) comprises a plurality of regular hexagons with side lengths of 40-50 μm and depths of 3-5 μm which are all arranged on the outer end face of the glue spraying port (4).
  4. 4. The anti-blocking spray head based on the coating and the bionic structure according to claim 3, wherein the spacing between the regular hexagons is 100-200 μm.
  5. 5. The anti-blocking glue spraying head based on the coating and the bionic structure according to claim 1 or 2, wherein a transition layer is further deposited on the inner surface of the glue spraying channel and the outer surface of the glue spraying port (4), and the transition layer is made of nickel-phosphorus alloy or titanium alloy so as to improve the binding force between the coating and the base material.
  6. 6. The anti-blocking spray head based on a coating and a bionic structure according to claim 5, wherein silica nucleation particles are further laid on the transition layer.
  7. 7. The anti-blocking spray head based on a coating and a bionic structure according to claim 6, wherein the particle size of the silica nucleation particles is 1-3 μm.
  8. 8. The anti-blocking spray head based on the coating and the bionic structure according to claim 6, wherein the coating is coated on the transition layer to wrap the silica nucleation particles to form hemispherical microprotrusions (5).
  9. 9. The anti-blocking spray head based on the coating and the bionic structure according to claim 8, wherein the thickness of the coating is 8-12 μm, and the spacing between the hemispherical microprotrusions is 8-15 μm.
  10. 10. Glue spraying device comprising a nozzle body (2) and a flow breaking needle valve (3), characterized in that it further comprises an anti-blocking glue spraying head according to any one of claims 1-9 connected with the nozzle body (2) and the flow breaking needle valve (3).

Description

Anti-blocking glue spraying head and glue spraying device based on coating and bionic structure Technical Field The invention relates to the technical field of glue spraying devices, in particular to an anti-blocking glue spraying head based on a coating and a bionic structure and a glue spraying device. Background At present, in order to solve the problems that the head of the glue spraying head after being used can be stuck with some glue, the glue is difficult to wipe after being stuck, and the treatment is very inconvenient, the surface of a base material of the glue spraying head is usually directly sprayed with a layer in the prior art. For example, CN207533492U discloses a glue-spraying head structure, which is provided with polytetrafluoroethylene (hereinafter referred to as PTFE) coating layers on the surfaces of the glue-spraying head main body and the inner sleeve, so that glue adhesion can be effectively prevented, and glue residue can be reduced through low surface energy characteristics. However, this solution only focuses on reducing the sticking of glue to the coating, and ignoring the nozzle outlet tends to form a residual glue film. These residues adhere to the outlet edge due to surface tension, and if they cannot be removed in time, they will solidify or be pushed and deposited by new glue during the next spraying, eventually leading to clogging. Disclosure of Invention Accordingly, the present invention is directed to an anti-blocking glue spraying head and a glue spraying device based on a coating and a bionic structure, so as to solve the above problems. The invention adopts the following scheme: The application provides an anti-blocking glue spraying head based on a coating and a bionic structure, which comprises a glue spraying head main body, wherein an anti-sticking coating is arranged on the inner surface of a glue spraying channel of the glue spraying head main body and the outer surface of a glue spraying port, and at least the outer end surface of the glue spraying port is provided with a bionic micro-texture based on the lotus leaf surface. Further, the coating is a polytetrafluoroethylene coating or a teflon coating. Further, the bionic micro-weave structure comprises a plurality of regular hexagons with the side length of 40-50 mu m and the depth of 3-5 mu m which are all arranged on the outer end face of the glue spraying port. Further, the spacing between the regular hexagons is 100-200 μm. Further, a transition layer is deposited on the inner surface of the glue spraying channel and the outer surface of the glue spraying port, and the transition layer is made of nickel-phosphorus alloy or titanium alloy so as to improve the binding force between the coating and the base material. Further, silica nucleation particles are also laid on the transition layer. Further, the particle diameter of the silica-shaped core particle is 1-3 μm. Further, the coating is coated on the transition layer to wrap the silicon dioxide nucleation particles to form hemispherical microprotrusions. Further, the thickness of the coating is 8-12 μm, and the interval between the hemispherical micro-protrusions is 8-15 μm. The glue spraying device comprises a nozzle body, a flow breaking needle valve and the anti-blocking glue spraying head connected with the nozzle body and the flow breaking needle valve. By adopting the technical scheme, the invention can obtain the following technical effects: The bionic micro-texture based on the lotus leaf surface is arranged on the outer end face of the glue spraying port, so that glue residues are effectively reduced, blocking is prevented, liquid films and residues are prevented from being accumulated on the outer end face of the glue spraying port, blocking of the glue spraying channel is avoided, and the reliability and the service life of continuous operation of equipment are improved. Drawings In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Fig. 1 is a schematic cross-sectional view of a glue spraying device according to an embodiment of the invention. Fig. 2 is a schematic structural diagram of a glue spraying device according to an embodiment of the invention. Fig. 3 is a schematic structural diagram of an end face of a glue spraying port of an anti-blocking glue spraying head based on a coating and bionic structure according to an embodiment of the invention. Fig. 4 is a schematic diagram of an experimental experiment of glue wettability test and an analytical statistical chart of a contact angle according to an embodiment of the