Strip diverting mechanism, drying device and electrode plate manufacturing apparatus
A strip diverting mechanism includes a negative pressure unit and an air discharge unit. The negative pressure unit and the air discharge unit are arranged opposite each other, and a gap through which a strip passes is formed between the negative pressure unit and the air discharge unit. The negative pressure unit is configured to provide a suction force to the strip and the air discharge unit is configured to provide a repulsive force to the strip, to prevent the strip from contacting the negative pressure unit and the air discharge unit.
1. A strip diverting mechanism, comprising:
a negative pressure unit; and
an air discharge unit;
wherein:
the negative pressure unit and the air discharge unit are arranged opposite each other, a gap through which a strip passes is formed between the negative pressure unit and the air discharge unit, and the negative pressure unit and the air discharge unit are configured such that a direction in which the strip enters the gap differs from a direction in which the strip exits the gap; and
the negative pressure unit is configured to provide a suction force to the strip and the air discharge unit is configured to provide a repulsive force to the strip, to prevent the strip from contacting the negative pressure unit and the air discharge unit.
2. The strip diverting mechanism according to claim 1 , wherein:
the air discharge unit comprises an air discharge surface arranged facing the negative pressure unit and provided with a plurality of air discharge holes.
3. The strip diverting mechanism according to claim 2 , wherein:
the air discharge surface is an arc-shaped surface.
4. The strip diverting mechanism according to claim 3 , wherein:
the air discharge surface is a semi-cylindrical surface.
5. The strip diverting mechanism according to claim 2 , wherein:
the air discharge unit further comprises an air intake hole and is internally provided with a cavity, the air discharge holes and the air intake hole being in communication with the cavity.
6. The strip diverting mechanism according to claim 1 , wherein:
an air discharge speed of the air discharge unit is 1-20 m/s.
7. The strip diverting mechanism according to claim 1 , wherein:
the negative pressure unit comprises a body, a first air discharge portion, and a second air discharge portion, wherein the body is internally provided with a chamber, and the first air discharge portion and the second air discharge portion are connected to the body and in communication with the chamber; and
the first air discharge portion and the second air discharge portion are arranged at an interval, to form a negative pressure between the first air discharge portion and the second air discharge portion to provide the suction force to the strip.
8. The strip diverting mechanism according to claim 7 , wherein:
an air discharge direction of the first air discharge portion is inclined to a direction away from the second air discharge portion; and
an air discharge direction of the second air discharge portion is inclined to a direction away from the first air discharge portion.
9. The strip diverting mechanism according to claim 7 , wherein:
the first air discharge portion and the second air discharge portion are arranged in the gap at an interval in a running direction of the strip.
10. The strip diverting mechanism according to claim 7 , wherein:
at least one of an air discharge speed of the first air discharge portion or an air discharge speed of the second air discharge portion is 5-20 m/s.
11. The strip diverting mechanism according to claim 7 , wherein:
the negative pressure unit further comprises a first flow guide member and a second flow guide member;
the first flow guide member is connected to a side of the first air discharge portion away from the second air discharge portion, to guide an airflow to flow in the direction away from the second air discharge portion; and
the second flow guide member is connected to a side of the second air discharge portion away from the first air discharge portion, to guide the airflow to flow in the direction away from the first air discharge portion.
12. The strip diverting mechanism according to claim 11 , wherein:
at least one of the first flow guide member or the second flow guide member has a length of 20-500 mm.
13. The strip diverting mechanism according to claim 7 , wherein:
the negative pressure unit further comprises a first protective member and a second protective member;
one end of the first protective member is connected to a side of the first air discharge portion close to the second air discharge portion, and another end of the first protective member extends toward the second air discharge portion; and
one end of the second protective member is connected to a side of the second air discharge portion close to the first air discharge portion, and another end of the second protective member extends toward the first air discharge portion.
14. The strip diverting mechanism according to claim 7 , wherein:
the negative pressure unit further comprises an air equalization member arranged in the chamber and separating an air inlet of the body from the first air discharge portion and the second air discharge portion.
15. The strip diverting mechanism according to claim 1 , wherein:
the negative pressure unit includes two air channels located at two sides of the negative pressure unit and configured to discharge air to a direction away from the negative pressure unit, to generate a negative pressure area at a center of the negative pressure unit.
16. A drying device, comprising:
a box; and
the strip diverting mechanism according to claim 1 arranged inside the box and configured to change a running direction of a strip in the box.
17. The drying device according to claim 16 ,
wherein the strip diverting mechanism is configured to change the running direction of the strip from a first direction to a second direction, the first direction being opposite to the second direction;
the drying device further comprising:
a drying unit arranged in the box and located between a first strip segment running in the first direction and a second strip segment running in the second direction for blowing air to the first strip segment and the second strip segment.
18. The drying device according to claim 17 , wherein:
the drying unit is provided with an air chamber, a first air blowing surface, and a second air blowing surface, wherein the first air blowing surface is arranged facing the first strip segment, the second air blowing surface is arranged facing the second strip segment, the air chamber is arranged between the first air blowing surface and the second air blowing surface, and the first air blowing surface and the second air blowing surface are each provided with an air blowing hole in communication with the air chamber.
19. An electrode plate manufacturing apparatus, comprising:
a coating device configured to coat a slurry on a surface of an electrode plate; and
a drying device arranged downstream of the coating device in a running direction of the electrode plate, and configured to dry the slurry on the electrode plate, the drying device comprising:
a box; and
the strip diverting mechanism according to claim 1 arranged inside the box and configured to change a running direction of the electrode plate in the box.