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CN-121988502-A - High-speed gap coating valve

CN121988502ACN 121988502 ACN121988502 ACN 121988502ACN-121988502-A

Abstract

The invention provides a high-speed gap coating valve which comprises a first feed port, a second feed port, a first backflow valve, a second backflow valve, a backflow port, a first coating valve, a second coating valve and a discharge port, wherein the input end of the first feed port and the input end of the second feed port are respectively connected with a feeding mechanism, the output end of the first feed port is connected with the input end of the first backflow valve, the output end of the first backflow valve is respectively connected with the backflow port and the input end of the first coating valve, the output end of the second feed port is connected with the input end of the second backflow valve, the output end of the second backflow valve is respectively connected with the backflow port and the input end of the second coating valve, the output end of the first coating valve and the output end of the second coating valve are respectively connected with the discharge port, and the discharge port is connected with a coating die head. The two feed lines of the present solution are designed to alternate coating operations, which alternate modes of operation help to improve coating efficiency and speed while providing buffer time for line switching.

Inventors

  • HE JIAJUN
  • LI JUNLI
  • Shi Xiqu

Assignees

  • 中山市誉辰智能科技有限公司

Dates

Publication Date
20260508
Application Date
20260122

Claims (10)

  1. 1. The high-speed gap coating valve is characterized by comprising a first feed port, a second feed port, a first backflow valve, a second backflow valve, a backflow port, a first coating valve, a second coating valve and a discharge port, wherein the input end of the first feed port and the input end of the second feed port are respectively connected with a feeding mechanism, the output end of the first feed port is connected with the input end of the first backflow valve, the output end of the first backflow valve is respectively connected with the backflow port and the input end of the first coating valve, the output end of the second feed port is connected with the input end of the second backflow valve, the output end of the second backflow valve is respectively connected with the backflow port and the input end of the second coating valve, the output end of the first coating valve and the output end of the second coating valve are respectively connected with the discharge port, and the discharge port is connected with a coating die head; when the first back flow valve is opened and the first coating valve is closed, the first feed port, the first back flow valve and the back flow port are communicated to form a first back flow pipeline; when the first back flow valve is closed and the first coating valve is opened, the first feed inlet, the first coating valve and the discharge outlet are communicated to form a first feed pipeline; When the second back flow valve is opened and the second coating valve is closed, the second feeding port, the second back flow valve and the back flow port are communicated to form a second back flow pipeline; when the second back flow valve is closed and the second coating valve is opened, the second feeding port, the second coating valve and the discharging port are communicated to form a second feeding pipeline; the first feeding pipeline and the second feeding pipeline are used for alternately coating.
  2. 2. The high-speed gap coating valve of claim 1, further comprising a first pressure regulating valve connected between the first backflow valve and the first coating valve and a second pressure regulating valve connected between the second backflow valve and the second coating valve.
  3. 3. The high-speed gap coating valve of claim 1, further comprising a first pressure sensor disposed between the first backflow valve and the first coating valve and a second pressure sensor disposed between the second backflow valve and the second coating valve.
  4. 4. The high-speed gap coating valve of claim 1, further comprising a third pressure sensor disposed between the first backflow valve and the backflow port and a fourth pressure sensor disposed between the second backflow valve and the backflow port.
  5. 5. The high-speed gap coating valve of claim 1, further comprising a first diaphragm valve and a second diaphragm valve, the first diaphragm valve being connected between the first backflow valve and the backflow port, the second diaphragm valve being connected between the second backflow valve and the backflow port.
  6. 6. The high-speed gap coating valve according to claim 1, wherein the first backflow valve, the second backflow valve, the first coating valve and the second coating valve have the same structure and are all stop valves with adjustable opening and closing and flow.
  7. 7. The high-speed gap coating valve according to claim 6, wherein the stop valve comprises a stop valve cavity, a first driving member, a first pull rod, a pressing block and a guide rod, the first pull rod is connected with the output end of the first driving member, the pressing block is arranged on the first pull rod, the stop valve cavity is respectively communicated with one feed pipe and two discharge pipes, the pressing block is arranged between the stop valve cavity and one discharge pipe, the driving member is used for driving the pressing block to block or conduct one discharge pipe, and the guide rod is connected with the first pull rod and used for guiding the moving direction of the first pull rod.
  8. 8. The high-speed gap coating valve according to claim 2, wherein the first pressure regulating valve and the second pressure regulating valve have the same structure, the first pressure regulating valve and the second pressure regulating valve each comprise a pressure regulating valve cavity, a second driving member, a second pull rod and a piston, the second pull rod is connected with the output end of the second driving member, the piston is arranged on the second pull rod and is slidably connected in the pressure regulating valve cavity, and the second driving member is used for driving the piston to move so as to control the air pressure in the pressure regulating valve cavity.
  9. 9. The high-speed gap coating valve of claim 1, further comprising a controller electrically connected to the first backflow valve, the second backflow valve, the first coating valve, and the second coating valve, respectively, for controlling opening and closing of the first backflow valve, the second backflow valve, the first coating valve, and the second coating valve.
  10. 10. A high-speed gap coating method, comprising: the pretreatment, namely a closing instruction is sent to a first backflow valve, and an opening instruction is sent to a first coating valve when the first backflow valve is closed, wherein the time from the time when the first backflow valve receives the closing instruction to the time when the first backflow valve executes the closing action is T1; the first section coating comprises the steps of executing an opening action by the first coating valve to perform first section coating, and sending a closing instruction to the first coating valve when the first section coating time reaches T2; the first section of the blank is left, the first reflux valve executes an opening action to carry out the first section of blank, when the first section of blank time reaches T3, a closing instruction is sent to the second reflux valve, and when the second reflux valve is closed, an opening instruction is sent to the second coating valve, wherein the total time of the first section of blank is T1+T3; the second section coating, the second coating valve executes the opening action to carry out the second section coating, and when the second section coating time reaches T4, the second section coating valve sends a closing instruction; The second section of the blank is left, the second reflux valve executes an opening action to carry out the second section of the blank, when the second section of the blank time reaches T5, a closing instruction is sent to the first reflux valve, and when the first reflux valve is closed, an opening instruction is sent to the first coating valve, wherein the total second section of the blank time is T1+T5; the first stage coating, first stage whitening, second stage coating and second stage whitening steps are cyclically repeated.

Description

High-speed gap coating valve Technical Field The invention relates to the technical field of high-speed gap coating, in particular to a high-speed gap coating valve. Background The gap coating technology has strong functionality, simplifies the technological process, can directly save the subsequent steps of laser cleaning or scraping the coating, has flexible design, and can adapt to different types of battery cells by changing the coating length and the gap length. However, the process has high requirements on equipment precision, a control system and process understanding, and the problems that the density and quality of the coating surface are difficult to control and the like are easily generated. The existing gap valve mainly comprises a single-backflow gap coating valve and a double-backflow gap coating valve, wherein the single-backflow gap coating valve is mainly applied to the same gap white-keeping process, the coating speed is relatively low, the double-backflow gap coating valve is mainly applied to the same gap white-keeping process and the special gap white-keeping process, and the single-backflow gap coating valve and the double-backflow gap coating valve are essentially shared by a feeding valve, so that the coating speed is relatively low. 1. In terms of speed, the existing gap valve is single-backflow or double-backflow, and the motor is required to complete two forward and reverse movement responses in a very short time, so that the performance of the motor determines the coating speed, and in terms of mass, when special-shaped gap coating is carried out, the existing double-backflow gap valve shares a single feed valve, and two backflow pressures are difficult to accurately control, so that the coating quality is difficult to control. Disclosure of Invention It is an object of the present invention to provide a high speed gap coating valve that solves at least some of the above problems. The invention provides a high-speed gap coating valve, which comprises a first feed port, a second feed port, a first backflow valve, a second backflow valve, a backflow port, a first coating valve, a second coating valve and a discharge port, wherein the input end of the first feed port and the input end of the second feed port are respectively connected with a feeding mechanism, the output end of the first feed port is connected with the input end of the first backflow valve, the output end of the first backflow valve is respectively connected with the backflow port and the input end of the first coating valve, the output end of the second feed port is connected with the input end of the second backflow valve, the output end of the second backflow valve is respectively connected with the backflow port and the input end of the second coating valve, the output end of the first coating valve and the output end of the second coating valve are respectively connected with the discharge port, and the discharge port is connected with a coating die head; when the first back flow valve is opened and the first coating valve is closed, the first feed port, the first back flow valve and the back flow port are communicated to form a first back flow pipeline; when the first back flow valve is closed and the first coating valve is opened, the first feed inlet, the first coating valve and the discharge outlet are communicated to form a first feed pipeline; When the second back flow valve is opened and the second coating valve is closed, the second feeding port, the second back flow valve and the back flow port are communicated to form a second back flow pipeline; when the second back flow valve is closed and the second coating valve is opened, the second feeding port, the second coating valve and the discharging port are communicated to form a second feeding pipeline; the first feeding pipeline and the second feeding pipeline are used for alternately coating. Further, the high-speed gap coating valve further comprises a first pressure regulating valve and a second pressure regulating valve, wherein the first pressure regulating valve is connected between the first backflow valve and the first coating valve, and the second pressure regulating valve is connected between the second backflow valve and the second coating valve. Further, the high-speed gap coating valve further comprises a first pressure sensor and a second pressure sensor, wherein the first pressure sensor is arranged between the first backflow valve and the first coating valve, and the second pressure sensor is arranged between the second backflow valve and the second coating valve. Further, the high-speed gap coating valve further comprises a third pressure sensor and a fourth pressure sensor, wherein the third pressure sensor is arranged between the first backflow valve and the backflow port, and the fourth pressure sensor is arranged between the second backflow valve and the backflow port. Further, the high-speed gap coating valve further comprises a f