Coating extrusion head and coating apparatus
A coating extrusion head may include an extrusion head body and at least one pressure regulating assembly. The extrusion head body may be provided with a coating slot and an accommodating cavity which may be in communication with each other. The at least one pressure regulating assembly may be arranged in the accommodating cavity, and the pressure regulating assembly may be configured to be expandable in a first direction perpendicular to the coating slot.
1 . A coating extrusion head, comprising:
an extrusion head body provided with an elongated accommodating cavity internally, the elongated accommodating cavity extending along a longitudinal direction, and the extrusion head body being further provided with a coating slot in communication with the elongated accommodating cavity; and
a plurality of pressure regulating assemblies arranged in the elongated accommodating cavity and arranged linearly along the longitudinal direction, each pressure regulating assembly among the plurality of pressure regulating assemblies comprises an expandable structure and a pressure sensor arranged on a surface of the expandable structure, wherein the expandable structure is configured to expand in a first direction perpendicular to the longitudinal direction of the elongated accommodating cavity and perpendicular to an extrusion direction of the coating slot to locally adjust a volume of a corresponding portion along the longitudinal direction of the elongated accommodating cavity, and
the pressure sensor is configured to detect a pressure on the surface of the expandable structure.
2 . The coating extrusion head according to claim 1 , wherein: the pressure sensor is configured to transmit a pressure signal to an external control system; and the expandable structure expands and contracts based on a control signal from the control system.
3 . The coating extrusion head according to claim 2 , wherein;
the pressure regulating assembly further comprises a wireless signal transceiver, the wireless signal transceiver being configured to transmit the pressure signal from the pressure sensor to the control system in a wireless transmission manner, and the wireless signal transceiver being further configured to receive the control signal from the control system and transmit the control signal to the expandable structure.
4 . The coating extrusion head according to claim 2 , wherein;
the expandable structure is a piezoelectric driving device.
5 . The coating extrusion head according to claim 1 , wherein:
the extrusion head body further comprises an elastic protective film arranged in the accommodating cavity; and
the elastic protective film covers at least one of the pressure regulating assemblies and is elastically deformed with expansion and contraction of the pressure regulating assemblies.
6 . The coating extrusion head according to claim 5 , wherein:
the elastic protective film is a carbon fiber film or a tetrafluoroethylene film.
7 . The coating extrusion head according to claim 1 , wherein:
the extrusion head body comprises an upper extrusion head and a lower extrusion head, the upper extrusion head is snap-fitted with an upper portion of the lower extrusion head, and the upper extrusion head and the lower extrusion head jointly define the accommodating cavity.
8 . The coating extrusion head according to claim 7 , further comprising:
a sealing gasket arranged at a contact portion between the upper extrusion head and the lower extrusion head.
9 . The coating extrusion head according to claim 7 , wherein:
the lower extrusion head is provided with a groove, and the upper extrusion head is snap-fitted with the lower extrusion head to enclose the groove to form the accommodating cavity.
10 . The coating extrusion head according to claim 7 , wherein:
the extrusion head body further comprises a fastener, the upper extrusion head is provided with a first mounting hole, the lower extrusion head is provided with a second mounting hole, and the fastener passes through the first mounting hole and the second mounting hole to fixedly connect the upper extrusion head to the lower extrusion head.
11 . The coating extrusion head according to claim 7 , wherein;
the coating slot is arranged between the upper extrusion head and the lower extrusion head, and a surface of the upper extrusion head close to the coating slot and a surface of the lower extrusion head close to the coating slot are both provided with wear-resistant material layers.
12 . The coating extrusion head according to claim 11 , wherein:
the wear-resistant material layers are ceramic layers or silicon carbide layers.
13 . The coating extrusion head according to claim 7 , wherein;
an edge of the upper extrusion head is provided with a handle portion for grasping.
14 . A coating apparatus, comprising:
a coating extrusion head, the coating extrusion head including:
an extrusion head body provided with an elongated accommodating cavity internally, the elongated accommodating cavity extending along a longitudinal direction, and the extrusion head body being further provided with a coating slot in communication with the elongated accommodating cavity; and
a plurality of pressure regulating assemblies arranged in the elongated accommodating cavity and arranged linearly along the longitudinal direction, each pressure regulating assembly among the plurality of pressure regulating assemblies comprises an expandable structure and a pressure sensor arranged on a surface of the expandable structure, wherein the expandable structure is configured to expand in a first direction perpendicular to the longitudinal direction of the elongated accommodating cavity and perpendicular to an extrusion direction of the coating slot to locally adjust a volume of a corresponding portion along the longitudinal direction of the elongated accommodating cavity, and
the pressure sensor is configured to detect a pressure on the surface of the expandable structure.
15 . The coating extrusion head according to claim 1 , wherein:
each pressure regulating assembly among the plurality of pressure regulating assemblies locally adjusts the volume of the corresponding portion along the longitudinal direction of the elongated accommodating cavity by adjusting a weight of a slurry in a coated single point or local area by expanding or contracting to adjust the volume of the elongated accommodating cavity.
16 . The coating extrusion head according to claim 15 , wherein:
each pressure regulating assembly among the plurality of pressure regulating assemblies includes a piezoelectric driving device corresponding to the expandable structure and the pressure sensor arranged on a surface of the piezoelectric driving device to detect the pressure at a position where an individual piezoelectric driving device is located to locally adjust the volume of the corresponding portion along the longitudinal direction of the elongated accommodating cavity.
17 . The coating apparatus according to claim 14 , wherein:
each pressure regulating assembly among the plurality of pressure regulating assemblies locally adjusts the volume of the corresponding portion along the longitudinal direction of the elongated accommodating cavity by adjusting a weight of a slurry in a coated single point or local area by expanding or contracting to adjust the volume of the elongated accommodating cavity.
18 . The coating apparatus according to claim 17 , wherein: each pressure regulating assembly among the plurality of pressure regulating assemblies includes a piezoelectric driving device corresponding to the expandable structure and the pressure sensor arranged on a surface of the piezoelectric driving device to detect the pressure at a position where an individual piezoelectric driving device is located to locally adjust the volume of the corresponding portion along the longitudinal direction of the elongated accommodating cavity.
19 . A coating extrusion head, comprising:
an extrusion head body provided with an elongated accommodating cavity internally, the elongated accommodating cavity extending along a longitudinal direction, and the extrusion head body being further provided with a coating slot in communication with the elongated accommodating cavity, wherein
the extrusion head body includes an upper extrusion head and a lower extrusion head,
the upper extrusion head is snap-fitted with an upper portion of the lower extrusion head, and the upper extrusion head and the lower extrusion head jointly define the accommodating cavity, and
the extrusion head body further includes a sealing gasket arranged at a contact portion between the upper extrusion head and the lower extrusion head; and a plurality of pressure regulating assemblies arranged in the elongated accommodating cavity and arranged linearly along the longitudinal direction, wherein
each pressure regulating assembly among the plurality of pressure regulating assemblies includes an expandable structure and a pressure sensor arranged on a surface of the expandable structure, the expandable structure is configured to expand in a first direction perpendicular to the longitudinal direction of the elongated accommodating cavity and perpendicular to an extrusion direction of the coating slot to locally adjust a volume of a corresponding portion along the longitudinal direction of the elongated accommodating cavity, and
the pressure sensor is configured to detect a pressure on the surface of the expandable structure.
20 . The coating extrusion head according to claim 19 , wherein:
the sealing gasket separates the upper extrusion head from the lower extrusion head to form the coating slot.