# US 10,121,580 B2 · Gluing device, gluing method and colloid for packaging devices > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,121,580 B2 - Document ID: US10121580B2 - Status: Granted - Kind: B2 - Application number: 14/436,317 - Filed: 2014-07-31 - Published: 2016-09-22 - Granted: 2018-11-06 - Earliest claimed: 2014-03-28 - Assignees: Boe Technology Group Co., Ltd.; Hefei Xinsheng Optoelectronics Technology Co., Ltd. - Applicants: Boe Technology Group Co., Ltd.; Hefei Xinsheng Optoelectronics Technology Co., Ltd. - Inventors: Wei Quan; Chiahao Chang; Chinlung Liao - Web page: https://patentgrep.com/patent/US10121580B2 ## CPC - H01F 7/206: {Electromagnets for lifting, handling or transporting of magnetic pieces or material (electromagnets for guidance of vehicles, workpieces B65G21/2009; for magnetic suspension or levitation H02N15/00)} - B05C 5/0225: {characterised by flow controlling means, e.g. valves, located proximate the outlet (B05C5/0258, B05C5/0275 take precedence; supply valves upstream the coating head B05C11/1036)} - B05D 1/26: performed by applying the liquid or other fluent material from an outlet device in contact with, or almost in contact with, the surface - C09J 9/00: Adhesives characterised by their physical nature or the effects produced, e.g. glue sticks (C09J7/00 takes precedence) - C09J 11/04: inorganic - H01F 1/0571: {in the form of particles, e.g. rapid quenched powders or ribbon flakes} - B05D 3/20: {by magnetic fields} - H01F 1/0578: {bonded together} - H01F: MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES - B05C: APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL (spraying apparatus, atomising apparatus, nozzles B05B; plant for applying liquids or other fluent materials to objects by electrostatic spraying B05B5/08) - B05D: PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL (conveying articles or workpieces through baths of liquid B65G, e.g. B65G49/02) - C09J: ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES (preparation of glue or gelatine C09H) ## Abstract The present disclosure provides a gluing device, a gluing method and a colloid for packaging devices. The gluing device includes an instillation head configured to guide a glue added with magnetic material in an instillation direction; and a magnetic field generation mechanism configured to apply a magnetic field within the instillation head, so as to apply a force to the magnetic material through the magnetic field in a direction identical to or opposite to the instillation direction. Thus a flow rate of the glue in the instillation direction is controlled through the force applied by the magnetic material to the glue. The glue in the gluing device may be smoothly dripped out at a constant flow rate, thereby to prevent the occurrence of discontinuous or thin glue lines in the related art due to an insufficient pressure during gluing. ## Claims ### Claim 1 A gluing device comprising: an instillation head configured to guide a glue added with magnetic material in an instillation direction; a magnetic field generation mechanism comprising an electromagnetic coil configured to apply a magnetic field within the instillation head, so as to apply a force to the magnetic material through the magnetic field in a direction identical to or opposite to the instillation direction; a monitoring mechanism configured to monitor a total current change in the electromagnetic coil to determine a change in an induction current in the magnetic field, and calculate a flow rate of the glue in the instillation direction in accordance with the change in the induction current; and a controller configured to regulate a current supplied to the magnetic field generation mechanism in accordance with a difference between the flow rate of the glue provided by the monitoring mechanism and a desired flow rate; wherein the gluing device further includes a driving mechanism configured to apply a pressure onto the glue within the instillation head so as to move the glue toward the instillation outlet in the instillation direction, and the driving mechanism includes a slidable screw in the instillation head and a slidable plate in the instillation head; the slidable screw is perpendicularly mounted to the slidable plate. ### Claim 2 (depends on 1) The gluing device according to claim 1, wherein the electromagnetic coil surrounds the instillation head. ### Claim 3 (depends on 1) The gluing device according to claim 1, wherein the instillation head comprises an instillation outlet and a tube body connected to the instillation outlet; and the electromagnetic coil surrounds a periphery of the tube body; and the slidable screw is in the tube body; and the slidable plate is slidable in the tube body along an axis direction of the tube body, and an outer circumference of the slidable plate is in contact with an inner wall of the tube body. ### Claim 4 (depends on 1) The gluing device according to claim 1, wherein the magnetic material is of a particle size of 5 to 15 μm, and a weight percentage of the magnetic material relative to the glue is less than 5%. ### Claim 5 (depends on 1) The gluing device according to claim 1, wherein the magnetic material is NdFeB rare earth magnet. ### Claim 6 A gluing method comprising: adding magnetic material into a glue to be instilled in such a manner that the magnetic material is dispersed in the glue; applying a magnetic field with an electromagnetic coil in an instillation head filled with the glue when the glue is being instilled, so as to apply a force to the magnetic material through the magnetic field in a direction identical to or opposite to an instillation direction; applying a pressure onto the glue within the instillation head by driving a slidable screw with a slidable plate perpendicularly mounted to the slidable screw in the instillation head to move relative to the instillation head, thereby moving the glue toward the instillation outlet in the installation direction; monitoring a total current change in the electromagnetic coil to determine a change in an induction current of the magnetic field, and calculating a flow rate of the glue in the instillation direction in accordance with the change in the induction current; and regulating a current for generating the magnetic field in accordance with a difference between the flow rate of the glue and a desired flow rate. ### Claim 7 (depends on 6) The gluing method according to claim 6, wherein the step of applying the magnetic field with the electromagnetic coil in the instillation head filled with the glue comprises surrounding the instillation head with the electromagnetic coil. ### Claim 8 (depends on 6) The gluing method according to claim 6, wherein the instillation head comprises an instillation outlet and a tube body connected to the instillation outlet; and the step of applying the magnetic field with the electromagnetic coil in the instillation head filled with the glue comprises surrounding a periphery of the tube body with the electromagnetic coil. ### Claim 9 (depends on 7) The gluing method according to claim 7, wherein the step of applying the magnetic field with the electromagnetic coil in the instillation head filled with the glue so as to apply the force to the magnetic material through the magnetic field in a direction identical to or opposite to the instillation direction comprises: when requiring the glue to have a flow rate in the instillation direction, providing the electromagnetic coil with a current so as to move the magnetic material in the instillation direction, and changing a value of the current so as to change a value of the force applied to the magnetic material in the instillation direction; and when requiring the glue to be stationary relative to the instillation head, providing the electromagnetic coil with a current so as to move the magnetic material in a direction opposite to the instillation direction, and changing a value of the current so as to change a value of the force applied to the magnetic material in the direction opposite to the instillation direction. ### Claim 10 (depends on 6) The gluing method according to claim 6, wherein the step of regulating the current for generating the magnetic field in accordance with the difference between the flow rate of the glue and the desired flow rate comprises: when the induction current is increased and an increment exceeds a first predetermined value, acquiring a calculation result that the flow rate of the glue is increased relative to the desired flow rate, and reducing a magnetic field intensity of the magnetic field, so as to reduce the value of the force applied by the magnetic field to the magnetic material, thereby to reduce the flow rate of the glue in the instillation direction; when the induction current is decreased and a decrement exceeds a second predetermined value, acquiring a calculation result that the flow rate of the glue is decreased relative to the desired flow rate, and increasing the magnetic field intensity of the magnetic field, so as to increase the value of the force applied by the magnetic field to the magnetic material, thereby to increase the flow rate of the glue in the instillation direction; and when the induction current is changed within a predetermined range, acquiring a calculation result that the flow rate of the glue is unchanged relative to the desired flow rate, and maintaining the magnetic field intensity of the magnetic field. ### Claim 11 A gluing device comprising: an instillation head configured to guide glue having a magnetic material therein in an instillation direction; an electromagnetic coil configured to apply a magnetic field within the instillation head, so as to apply a force to the magnetic material through the magnetic field in a direction along the instillation direction; a total current charge monitoring configured to monitor a total current change in the electromagnetic coil to determine a change in an induction current in the magnetic field, and calculate a flow rate of the glue in the instillation direction in accordance with the change in the induction current; a controller configured to regulate a current supplied to the magnetic field generation mechanism in accordance with a difference between the flow rate of the glue provided by the monitoring mechanism and a desired flow rate; and a slidable screw with a slidable plate perpendicularly mounted to the slidable screw in the instillation head, the screw configured to drive the slidable plate to apply a pressure onto the glue within the instillation head so as to move the glue toward the instillation outlet in the instillation direction. ### Claim 12 (depends on 11) The gluing device according to claim 11, wherein the electromagnetic coil surrounds the instillation head. ### Claim 13 (depends on 11) The gluing device according to claim 11, wherein the instillation head comprises an instillation outlet and a tube body connected to the instillation outlet; and the electromagnetic coil surrounds a periphery of the tube body; and the slidable screw is in the tube body; and the slidable plate is slidable in the tube body along an axis direction of the tube body, and an outer circumference of the slidable plate is in contact with an inner wall of the tube body. ### Claim 14 (depends on 11) The gluing device according to claim 11, wherein the magnetic material comprises particles having a size of 5 to 15 μm, and a weight percentage of the magnetic material relative to the glue of less than 5%. ### Claim 15 (depends on 14) The gluing device according to claim 14, wherein the magnetic material comprises NdFeB rare earth magnet. ### Claim 16 (depends on 3) The gluing device according to claim 3, wherein a width of the slidable plate in a radial direction of the tube body is greater than a width of the instillation outlet in the radial direction of the tube body. ### Claim 17 (depends on 16) The gluing device according to claim 16, wherein the slidable screw and the instillation outlet are at two opposite sides of the slidable plate. ### Claim 18 (depends on 16) The gluing device according to claim 16, wherein a width of the tube body in the radial direction of the tube body is greater than the width of the instillation outlet in the radial direction of the tube body; the electromagnetic coil surrounds the periphery of the tube body and abuts against an end of the tube body. ### Claim 19 (depends on 13) The gluing device according to claim 13, wherein a width of the slidable plate in a radial direction of the tube body is greater than a width of the instillation outlet in the radial direction of the tube body. ### Claim 20 (depends on 13) The gluing device according to claim 13, wherein the slidable screw and the instillation outlet are at two opposite sides of the slidable plate.