Air outlet device and coating oven

Abstract

The utility model discloses an air outlet device and a coating oven, and relates to the technical field of coating. The air outlet device comprises an air outlet box and an adjusting mechanism, wherein the air outlet box is provided with an opening; the adjusting mechanism comprises two sets of adjusting assemblies, the two sets of adjusting assemblies are arranged on the two opposite sides of the opening respectively, each adjusting assembly comprises an adjusting sliding buckle and a blocking strip, and each adjusting sliding buckle is connected with one end of the corresponding blocking strip. The adjusting sliding buckles are arranged on the air outlet box in a sliding mode in the first direction so that part of the opening can be shielded by the barrier strip, and an air outlet is formed in the part, located between the two adjusting sliding buckles, of the opening. According to the air outlet device, under the condition that the overall drying of the pole piece is not influenced, the bending and folding edges of the edge and the blank area of the pole piece are reduced, the cracking phenomenon of the coating edge is reduced, and the yield is improved.

Description

Technical Field

[0001] This utility model relates to the field of coating technology, and in particular to an air outlet device and a coating oven. Background Technology

[0002] In the lithium battery production process, the electrodes need to be coated, and then baked in an oven to dry the coating slurry. However, the exhaust vent of the coating oven is much longer than the coating width. Because the surface density of the slurry at the edges of the electrode is lower than that in the middle area, the edges dry faster during baking, resulting in greater edge shrinkage and significant edge bending deformation. In severe cases, abnormal edge curling may occur. After baking, cracking is likely to occur when passing through the flattening rollers and drive rollers, seriously affecting product quality.

[0003] To address the above issues, it is necessary to develop an air outlet device and a coating oven to solve the problem of edge curling of the electrode sheets during the baking process. Utility Model Content

[0004] The purpose of this invention is to provide an air outlet device and a coating oven that can reduce bending and folding of the electrode edges and blank areas, reduce coating edge cracking, and improve yield without affecting the overall drying of the electrode.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] An air outlet device, comprising:

[0007] An air outlet box, wherein the air outlet box has an opening;

[0008] The adjustment mechanism includes two sets of adjustment components, which are respectively disposed on opposite sides of the opening. Each adjustment component includes an adjustment latch and a baffle. The adjustment latch is connected to one end of the baffle. The adjustment latch is slidably disposed in the air outlet box along a first direction so that the baffle can partially block the opening. The portion of the opening located between the two adjustment latches forms an air outlet.

[0009] As an optional solution for the above-mentioned air outlet device, the adjustment assembly further includes a roller shaft, which is rotatably disposed in the air outlet box, and the end of the baffle bar away from the adjustment latch is wound around the roller shaft.

[0010] As an alternative to the aforementioned air outlet device, the adjustment assembly further includes a torsion spring configured to drive the roller to rotate in order to wind up the baffle.

[0011] As an optional solution for the above-mentioned air outlet device, the adjustment component further includes a locking element configured to lock the relative position of the adjustment latch and the air outlet box.

[0012] As an optional solution for the above-mentioned air outlet device, the air outlet device further includes two slide rails, which are respectively arranged on opposite sides of the opening along the second direction, and the adjustment latch is slidably connected to both slide rails.

[0013] As an optional solution for the above-mentioned air outlet device, a sliding groove is provided on the inner side of the slide rail, and the sliding groove extends through to both ends of the slide rail in a first direction. The baffles of the two sets of adjustment components are slidably disposed in the sliding groove.

[0014] As an optional solution for the above-mentioned air outlet device, the adjustment latch includes a connecting section, which is connected to one end of the baffle strip. The connecting section is slidably disposed between the two slide rails and slidably abuts against the two slide rails.

[0015] As an optional solution for the above-mentioned air outlet device, both ends of the connecting section are connected to sliding sleeves, which are fitted onto the corresponding slide rails and slide against the slide rails.

[0016] As an optional solution for the above-mentioned air outlet device, the air outlet box includes a guide section and an acceleration section, the guide section is connected to the acceleration section, the opening is opened at the end of the acceleration section away from the guide section, and the cross-sectional area of ​​the acceleration section gradually decreases along the direction close to the opening.

[0017] A coating oven includes the aforementioned air outlet device, and further includes a duct, a fan, and a heating device, wherein the heating device is disposed within the duct, the duct is connected to the air outlet device, and the fan is configured to blow air into the duct.

[0018] The beneficial effects of this utility model are:

[0019] This utility model provides an air outlet device and a coating oven. The air outlet device includes an air outlet box and an adjustment mechanism. The adjustment mechanism's adjustment lever can adjust the position of the front end of the baffle, thereby adjusting the size of the air outlet. This allows the baffle to block the edge area of ​​the electrode, concentrating more hot air in the middle area of ​​the electrode, slowing down the drying speed of the electrode edge, and keeping it relatively consistent with the drying speed of the middle area.

[0020] This air outlet device can reduce bending and folding of the electrode edges and blank areas without affecting the overall drying of the electrode, reduce coating edge cracking, and improve yield. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the air outlet device provided by this utility model;

[0022] Figure 2 yes Figure 1A magnified view of a section at point A in the middle;

[0023] Figure 3 This is a side view of the air outlet device provided by this utility model.

[0024] In the picture:

[0025] 1. Air outlet box; 11. Air outlet; 12. Guide section; 13. Acceleration section;

[0026] 2. Adjustment components; 21. Adjustment clips; 211. Connecting section; 212. Sliding sleeve; 22. Stop bar; 23. Roller shaft;

[0027] 3. Slide rail; 31. Slide groove. Detailed Implementation

[0028] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0029] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions.

[0030] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and connections within two components or interactions between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] Unless otherwise expressly specified and limited, "above" or "below" a second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of a second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" of a second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0032] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0033] This embodiment provides a coating oven, which includes a pipe, a fan, and a heating device. The fan blows air into the pipe, and the heating device is installed inside the pipe to heat the gas inside the pipe. In order to ensure that the gas inside the pipe can be accurately blown onto the electrode to be dried, one end of the pipe is connected to an air outlet device, which includes an air outlet box 1 with an opening. The gas inside the pipe is blown out from the opening under the drive of the fan.

[0034] In this embodiment, the air outlet box 1 includes a guide section 12 and an acceleration section 13, which are connected. The opening is located at the end of the acceleration section 13 away from the guide section 12, and the cross-sectional area of ​​the acceleration section 13 gradually decreases towards the opening. When the cross-sectional area of ​​the airflow channel decreases, the airflow velocity increases accordingly. This structural design can increase the velocity of the hot air when it blows out of the opening, and also makes the hot air more concentrated, which is conducive to improving the drying effect.

[0035] However, the length of the air outlet 11 of the coating oven is much longer than the coating width. Since the surface density of the slurry at the edge of the electrode is smaller than that in the middle area, the edge dries faster during the baking process, resulting in large edge shrinkage and large bending deformation of the electrode edge. In severe cases, abnormal curling occurs. After baking, cracking is likely to occur when passing through the flattening roller and the transmission roller, which seriously affects the product quality.

[0036] like Figure 1 As shown, to solve the above problems, the air outlet device provided in this embodiment also includes an adjustment mechanism. The adjustment mechanism is set at the opening position of the air outlet box 1. The adjustment mechanism includes two sets of adjustment components 2, which are respectively set on opposite sides of the opening. The adjustment component 2 includes an adjustment latch 21 and a baffle 22. One end of the adjustment latch 21 is connected to the baffle 22. The adjustment latch 21 is slidably set in the air outlet box 1 along the first direction so that the baffle 22 can block part of the opening. The part of the opening located between the two adjustment latches 21 forms the air outlet 11.

[0037] The adjustment lever 21 of the adjustment mechanism can adjust the position of the front end of the baffle 22, thereby adjusting the size of the air outlet 11. This allows the baffle 22 to block the edge area of ​​the electrode, concentrating more hot air in the middle area of ​​the electrode, slowing down the drying speed of the electrode edge, and keeping it relatively consistent with the drying speed of the middle area. This reduces bending and folding of the electrode edge and blank area without affecting the overall drying of the electrode, reduces coating edge cracking, and improves the yield.

[0038] In this embodiment, the adjustment assembly 2 further includes a roller 23, which is rotatably mounted on the air outlet box 1. The end of the baffle 22 furthest from the adjustment latch 21 is wound around the roller 23. The roller 23 is used to wind up the end of the baffle 22 furthest from the adjustment latch 21, preventing the end of the baffle 22 furthest from the adjustment latch 21 from contacting the electrode sheet and affecting the morphology of the slurry on the electrode sheet, thus ensuring the quality of the electrode sheet.

[0039] In this embodiment, the adjustment component 2 also includes a torsion spring, which is configured to drive the roller shaft 23 to rotate to wind up the baffle strip 22. The torsion spring greatly simplifies the operator's steps. The torsion spring ensures that the roller shaft 23 always has a preload in the rotation direction of winding up the baffle strip 22, ensuring that the baffle strip 22 is taut. This allows the baffle strip 22 to better cover part of the opening, and the baffle strip 22 will not bend or twist under the blowing of the gas, ensuring that the size of the air outlet 11 remains stable during the drying process, thereby providing stable hot air for drying the electrode sheet.

[0040] It is worth noting that the force exerted by the roller 23 on the baffle 22 and the vibration generated by the hot air blowing on the baffle 22 can both cause the adjusting latch 21 to move, thereby changing the size of the air outlet 11 and affecting the drying effect of the electrode. To solve the above problem, the adjusting assembly 2 also includes a locking element, which is configured to lock the relative position of the adjusting latch 21 and the air outlet box 1.

[0041] By locking the adjusting clips 21 with the locking mechanism, the baffle 22 can be kept taut and stable when the roller 23 winds up the baffle 22 or when hot air blows the baffle 22. This ensures that the hot air can only be blown out from the air outlet 11 between the two adjusting clips 21, thus ensuring the stability of the hot air flow rate and the blowing area.

[0042] Specifically, the locking element can be a snap-fit, which locks the air outlet box 1 by engaging with it; the locking element can also be an elastic baffle, which is set on the air outlet box 1. The operator can move the elastic baffle to allow the adjustment latch 21 to pass through, and the elastic baffle can return to its initial position under its own elasticity to engage with the adjustment latch 21. Along the sliding direction of the adjustment latch 21, the air outlet box 1 is provided with multiple elastic baffles at intervals.

[0043] In this embodiment, the locking element is a locking screw, which passes through the adjusting clip 21 and is threadedly connected to the adjusting clip 21. The locking screw can abut against the air outlet box 1 to lock the relative position of the adjusting clip 21 and the air outlet box 1.

[0044] In this embodiment, the air outlet device further includes two slide rails 3, which are respectively disposed on opposite sides of the opening along the second direction. The adjusting latch 21 is slidably connected to both slide rails 3. The two slide rails 3 guide the adjusting latch 21 from both sides, so that the adjusting latch 21 can connect the baffle 22 between the two slide rails 3, and can also drive one end of the baffle 22 to slide along the extension direction of the two slide rails 3.

[0045] It is worth noting that the locking screw can also abut against a slide rail 3 to lock the relative position of the adjusting clip 21 and the air outlet box 1.

[0046] Specifically, the adjusting clip 21 includes a connecting section 211, which is connected to one end of the stop bar 22. The connecting section 211 is slidably disposed between the two slide rails 3 and slides against the two slide rails 3. The connecting section 211 can be disposed between the two slide rails 3 to facilitate the connection between the adjusting clip 21 and the stop bar 22. At the same time, the length of the connecting section 211 can also be designed to simultaneously abut against the two slide rails 3, so that the two slide rails 3 can guide the connecting section 211.

[0047] Furthermore, both ends of the connecting section 211 are connected to sliding sleeves 212, which are fitted onto the corresponding slide rails 3 and slide against the slide rails 3. The structure of the sliding sleeves 212 ensures that the adjusting buckle 21 will not detach from the slide rails 3, thus ensuring the stability of the stop bar 22.

[0048] It is worth noting that the slide rail 3 and the air outlet box 1 are fixedly connected by screws. In order to avoid interference between the screws and the slide sleeve 212, the screws can be concentrated in the middle of the slide rail 3. By limiting the stroke of the adjustment clip 21, it is ensured that the adjustment clip 21 will not contact the screws. At this time, it is equivalent to limiting the minimum air outlet area of ​​the air outlet 11.

[0049] In some embodiments, the screws between the slide rail 3 and the air outlet box 1 are evenly distributed on the slide rail 3. In order to avoid the sliding sleeve 212 interfering with the screws and causing the adjustment clip 21 to not slide smoothly, the sliding sleeve 212 is disconnected to form a clearance between the beginning and end of the sliding sleeve 212. That is to say, during the sliding of the adjustment clip 21, the screws can pass through the clearance to ensure that the adjustment clip 21 can slide smoothly on the slide rail 3. At this time, the air outlet 11 has no minimum air outlet area limitation, and the opening of the air outlet box 1 can be completely closed when the two adjustment clips 21 abut.

[0050] In this embodiment, a groove 31 is provided on the inner side of the slide rail 3, and the groove 31 extends through to both ends of the slide rail 3 in the first direction. The baffles 22 of the two sets of adjustment components 2 are slidably disposed in the groove 31. The inner side of the slide rail 3 refers to the side of the slide rail 3 facing between the two slide rails 3. That is to say, the two sides of the baffle 22 are respectively slidably disposed in the groove 31 of the corresponding side of the slide rail 3. The groove 31 can not only ensure that the baffle 22 will not bend or curl when sliding, but also ensure that the baffle 22 will not have an excessive gap with the slide rail 3 when blown by hot air, thus ensuring that the hot air will not be blown out from the part other than the air outlet 11.

[0051] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. An air outlet device, characterized in that, include: An air outlet box (1) is provided with an opening; The adjustment mechanism includes two sets of adjustment components (2), which are respectively disposed on opposite sides of the opening. Each adjustment component (2) includes an adjustment latch (21) and a baffle (22). The adjustment latch (21) is connected to one end of the baffle (22). The adjustment latch (21) is slidably disposed in the air outlet box (1) along a first direction so that the baffle (22) can block part of the opening. The portion of the opening located between the two adjustment latches (21) forms an air outlet (11).

2. The air outlet device according to claim 1, characterized in that, The adjustment assembly (2) further includes a roller (23), which is rotatably mounted on the air outlet box (1), and the end of the baffle (22) away from the adjustment buckle (21) is wound around the roller (23).

3. The air outlet device according to claim 2, characterized in that, The adjustment assembly (2) also includes a torsion spring configured to drive the roller (23) to rotate in order to wind up the stop bar (22).

4. The air outlet device according to claim 2, characterized in that, The adjustment component (2) also includes a locking element configured to lock the relative position of the adjustment latch (21) and the air outlet box (1).

5. The air outlet device according to claim 1, characterized in that, The air outlet device also includes two slide rails (3), which are respectively arranged on opposite sides of the opening along the second direction. The adjustment buckle (21) is slidably connected to both slide rails (3).

6. The air outlet device according to claim 5, characterized in that, The slide rail (3) is provided with a slide groove (31) on its inner side. The slide groove (31) extends through to both ends of the slide rail (3) in the first direction. The baffles (22) of the two sets of adjustment components (2) are slidably disposed in the slide groove (31).

7. The air outlet device according to claim 5, characterized in that, The adjustment buckle (21) includes a connecting section (211), which is connected to one end of the stop bar (22). The connecting section (211) is slidably disposed between the two slide rails (3) and slides against the two slide rails (3).

8. The air outlet device according to claim 7, characterized in that, Both ends of the connecting section (211) are connected to a sliding sleeve (212), which is fitted onto the corresponding slide rail (3) and slides against the slide rail (3).

9. The air outlet device according to any one of claims 1 to 8, characterized in that, The air outlet box (1) includes a guide section (12) and an acceleration section (13). The guide section (12) is connected to the acceleration section (13). The opening is located at the end of the acceleration section (13) away from the guide section (12). The cross-sectional area of ​​the acceleration section (13) gradually decreases along the direction close to the opening.

10. A coating oven, characterized in that, The air outlet device according to any one of claims 1 to 9 further includes a duct, a fan and a heating device, wherein the heating device is disposed in the duct, the duct is connected to the air outlet device, and the fan is configured to blow air into the duct.

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