Search

CN-121972381-A - Coating and drying equipment

CN121972381ACN 121972381 ACN121972381 ACN 121972381ACN-121972381-A

Abstract

The application relates to the technical field of battery processing equipment, in particular to coating and drying equipment. A coating and drying device comprises an unreeling mechanism, a coating mechanism, a drying mechanism and a reeling mechanism, wherein the coating mechanism is positioned at the downstream of the unreeling mechanism, the drying mechanism comprises a heating groove, the heating groove is positioned at the downstream of the coating mechanism, and the reeling mechanism is positioned at the downstream of the heating groove. The coating and drying equipment provided by the application has the advantages that the drying efficiency is high, and cracks are not easy to occur on the surface of the catalytic layer.

Inventors

  • WANG ZHIHU
  • FAN CAIWEI
  • SHAO MENG
  • PENG LINFA

Assignees

  • 江苏氢导智能装备有限公司
  • 上海交通大学

Dates

Publication Date
20260505
Application Date
20260311

Claims (15)

  1. 1. A coating and drying apparatus (100), characterized by comprising: an unreeling mechanism (1); -a coating mechanism (2), said coating mechanism (2) being located downstream of said unreeling mechanism (1); A drying mechanism (3), the drying mechanism (3) comprising a heating tank (31), the heating tank (31) being located downstream of the coating mechanism (2), and And the winding mechanism (5) is positioned at the downstream of the heating groove (31).
  2. 2. The coating and drying apparatus (100) according to claim 1, wherein: the unreeling mechanism (1) is used for unreeling a material belt (L) to the reeling mechanism (5) along a preset path (J) through the coating mechanism (2), a notch of the heating groove (31) is arranged upwards along the vertical direction, and the notch of the heating groove (31) is positioned below the preset path (J); Or alternatively The coating and drying device (100) further comprises a first guide roller (21) and a second guide roller (41), wherein the first guide roller (21) is positioned at the downstream of the coating mechanism (2) and at the upstream of the drying mechanism (3), the second guide roller (41) is positioned at the downstream of the drying mechanism (3) and at the upstream of the winding mechanism (5), the notch of the heating groove (31) is arranged upwards along the vertical direction, the public tangent plane (S) is tangential to the first guide roller (21) and the second guide roller (41) and positioned above the first guide roller (21) and the second guide roller (41), and the notch of the heating groove (31) is positioned below the public tangent plane (S).
  3. 3. The coating and drying apparatus (100) according to claim 1, wherein the heating tank (31) comprises: A tank body (311), wherein the tank body (311) is positioned at the downstream of the coating mechanism (2) and at the upstream of the winding mechanism (5); and a first heater (312), wherein the first heater (312) is arranged on the tank body (311).
  4. 4. The coating and drying apparatus (100) according to claim 1, wherein the drying mechanism (3) further comprises: -a collecting tank (32), the notch of the collecting tank (32) being oriented towards the heating tank (31) and being located below the heating tank (31) in a vertical direction, the projection of the heating tank (31) onto the collecting tank (32) in a vertical direction being located in the notch of the collecting tank (32).
  5. 5. The coating and drying apparatus (100) according to claim 4, characterized in that a deflector cap rim (313) is provided on the peripheral wall of the heating tank (31), the projection of the deflector cap rim (313) in the vertical direction onto the collecting tank (32) being located within the notch of the collecting tank (32).
  6. 6. The coating and drying apparatus (100) according to claim 4, wherein the drying mechanism (3) further comprises: the pump body assembly (33), pump body assembly (33) intercommunication collecting vat (32) with heating groove (31).
  7. 7. The coating and drying apparatus (100) according to claim 6, wherein the bottom of the collecting tank (32) is gradually sunk from the periphery of the bottom of the collecting tank (32) to the middle, and the pump body assembly (33) communicates the middle of the bottom of the collecting tank (32) with the heating tank (31).
  8. 8. The coating and drying apparatus (100) according to claim 7, wherein a groove (321) is formed in a middle portion of a bottom of the collecting groove (32), and the pump body assembly (33) communicates with the groove (321) and the heating groove (31).
  9. 9. The coating and drying apparatus (100) according to claim 6, wherein the pump body assembly (33) is located between the collecting tank (32) and the heating tank (31).
  10. 10. The coating and drying apparatus (100) according to any one of claims 1 to 9, wherein the coating mechanism (2) comprises: Coating back roller (23) -A coating die (22), said coating die (22) being movably arranged towards and away from said coating back-roller (23).
  11. 11. The coating and drying apparatus (100) according to claim 1, wherein the coating and drying apparatus (100) further comprises: The cleaning mechanism (4), cleaning mechanism (4) are located the low reaches of drying mechanism (3) and are located the upper reaches of rolling mechanism (5), cleaning mechanism (4) are including blowing piece (44) and tray spare (42), the orientation of blowing piece (44) blow the wind gap is from the low reaches directional the direction of upper reaches, tray spare (42) are located along vertical direction the below of blowing piece (44).
  12. 12. The coating and drying apparatus (100) according to claim 11, wherein the unreeling mechanism (1) is configured to unreel a material tape (L) along a preset path (J) to the reeling mechanism (5) via the coating mechanism (2), and the blowing opening of the blowing member (44) is located at the lower side of the preset path (J).
  13. 13. The coating and drying apparatus (100) according to claim 11, wherein the drying mechanism (3) further comprises: -a collecting trough (32), the outflow opening (421) of the tray (42) being located above the notch of the collecting trough (32), and the projection of the outflow opening (421) onto the collecting trough (32) in the vertical direction being located within the notch of the collecting trough (32).
  14. 14. The coating and drying apparatus (100) according to any one of claims 1-9, wherein the coating and drying apparatus (100) further comprises a cleaning mechanism (4), the cleaning mechanism (4) comprising: the drying component (43), the drying component (43) comprises a drying unreeling piece (431) and a drying reeling piece (432), the coating drying device (100) further comprises a second guide roller (41), the second guide roller (41) is located at the downstream of the heating groove (31) and at the upstream of the reeling mechanism (5), the drying unreeling piece (431) is located at the upstream of the second guide roller (41), and the drying reeling piece (432) is located at the downstream of the second guide roller (41).
  15. 15. The coating and drying apparatus (100) according to any one of claims 1-9, wherein the heating tank (31) is adapted to accommodate a liquid medium therein.

Description

Coating and drying equipment Technical Field The application relates to the technical field of battery processing equipment, in particular to coating and drying equipment. Background In the production of fuel cell membrane electrodes, there is generally a process of coating a catalyst slurry on a proton exchange membrane and then drying to produce a catalytic layer on the proton exchange membrane. In the related art, the proton exchange membrane coated with the slurry is generally dried by means of hot air drying. However, when the proton exchange membrane coated with the slurry is dried by hot air drying, the drying efficiency is slow and cracks easily occur on the surface of the catalytic layer. Disclosure of Invention The application discloses coating and drying equipment which is high in drying efficiency and is not easy to crack on the surface of a catalytic layer. In order to achieve the above object, the present application discloses a coating and drying apparatus comprising: An unreeling mechanism; A coating mechanism downstream of the unwind mechanism; a drying mechanism including a heating tank downstream of the coating mechanism, and And the winding mechanism is positioned at the downstream of the heating groove. When the material belt is required to be dried by the coating and drying equipment, firstly, the unreeling mechanism can unreel the material belt to the reeling mechanism along a preset path through the coating mechanism, and when the material belt passes through the coating mechanism, the coating mechanism can coat the slurry on the surface of the material belt. After the surface of the web has been coated with the paste, the take-up mechanism is located downstream of the heating bath, since the heating bath is located downstream of the coating mechanism, the web coated with the paste will be driven through the heating bath when the take-up mechanism starts to take up the web. Wherein, because drying mechanism adopts the heating tank structure, and when setting up liquid medium in the heating tank, the heating tank is through heating liquid medium, can directly act on the thick liquids layer on material area surface with the form of non-gaseous strong convection such as heat conduction, heat radiation for heat transfer path is shorter, temperature distribution is more even, thereby improves the volatilization rate of the inside solvent of thick liquids by a wide margin, thereby can improve drying efficiency. And the heat exchange coefficient of the liquid medium is far higher than that of the gas, so that the quick heat transfer can be realized, and the drying efficiency can be further improved. In addition, in order to avoid cracking of the solvent layer when drying by hot air, a lower temperature is generally selected for drying, and a higher temperature is selected when drying by heating the liquid medium by the heating tank, so that the drying efficiency can be further improved. Meanwhile, the drying process of the heating tank does not have external airflow to flush the slurry layer, so that the solvent volatilization rate of the slurry is uniform and the film layer is synchronous in shrinkage in the drying process, and therefore, the problem of surface stress concentration caused by uneven volatilization rate can be avoided, the probability of cracking on the surface of the slurry layer is effectively reduced, and the surface quality and structural integrity of the slurry layer can be improved. In addition, when the heating tank dries the slurry layer on the surface of the material belt in a mode of heating the liquid medium, the state (volatilization/boiling) of the solvent can be adjusted by controlling the temperature of the liquid medium by selecting the liquid medium with the boiling point higher than that of the solvent in the slurry, so that the porosity of the slurry layer can be regulated and controlled, and the performance of the material belt product can be enhanced. In addition, through making unreeling mechanism, coating mechanism, drying mechanism, winding mechanism arrange along the process direction in proper order for can get into the heating tank immediately after the material area coating thick liquids and dry, reduce and stew latency after the coating, further improve whole production efficiency, guarantee the stability of material area serialization production. Optionally: The unreeling mechanism is used for unreeling the material belt to the reeling mechanism along a preset path through the coating mechanism, the notch of the heating groove is upwards arranged along the vertical direction, and the notch of the heating groove is positioned below the preset path; Or alternatively The coating drying equipment further comprises a first guide roller and a second guide roller, wherein the first guide roller is positioned at the downstream of the coating mechanism and is positioned at the upstream of the drying mechanism, the second guide roller is positioned at the