Agglomerated powder feeding device and its material smoothing mechanism

Abstract

This utility model discloses a material accumulation and smoothing mechanism, including a receiving hopper with openings at both ends. The receiving hopper surrounds the feeding area of ​​the roller. A pushing mechanism and a width-limiting mechanism are provided inside the receiving hopper. The pushing mechanism includes a scraper, which is disposed within the material-containing area of ​​the receiving hopper defined by the width-limiting mechanism. The scraper moves horizontally to smooth the powder within the material-containing area. This material accumulation and smoothing mechanism ensures a uniform powder height above the roller, preventing inconsistent powder height in the roller's feeding area from affecting the areal density of the film after formation. This results in a more uniform density of the film rolled by the roller and a higher yield. This utility model also discloses an agglomerated powder feeding device.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a feeding device for agglomerated powder and its material smoothing mechanism. Background Technology

[0002] In the dry electrode film-forming composite machine, due to the tendency of the film powder to agglomerate during the film-forming process, localized material accumulation can easily occur during the roller pressing stage. When the conveyed powder falls to the feed position of the roller, the loose material falls freely, and its pile surface forms a maximum acute angle (i.e., angle of repose) with the ground. When the material accumulates to this angle, any additional material added will naturally slide down, maintaining this angle and increasing the height while simultaneously increasing the base area, thus creating a material height difference above the film-forming roller. During the roller pressing process, this material height difference causes inconsistent pressure on the material piled above the roller, affecting the uniformity of film thickness and areal density, resulting in poor film quality, easy breakage, and a higher probability of producing defective products. Utility Model Content

[0003] In view of this, the present invention provides a material accumulation and smoothing mechanism, which makes the powder height above the roller uniform, avoids the uneven powder height in the feed area of ​​the roller from affecting the surface density of the film after film formation, and makes the density of the film rolled by the roller more uniform and the yield rate higher.

[0004] This utility model also provides a feeding device for agglomerated powder.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] In one aspect, this utility model provides a material smoothing mechanism, including a receiving hopper with openings at both the top and bottom. The receiving hopper is arranged around the feeding area of ​​the roller. A pushing mechanism and a width limiting mechanism are provided inside the receiving hopper. The pushing mechanism includes a scraper. The scraper is arranged within the material holding area of ​​the receiving hopper defined by the width limiting mechanism. The scraper moves horizontally to scrape the powder in the material holding area.

[0007] As can be seen from the above technical solution, the material smoothing mechanism provided by this utility model, by setting a horizontally moving scraper in the material holding area, the scraper moves horizontally to smooth the powder falling above the roller, ensuring that the material accumulation height in the feeding area above the roller is kept within a set range, so that the powder height above the roller is consistent, avoiding the formation of a material pile with a high center and low periphery above the roller, avoiding the inconsistent powder height in the feeding area of ​​the roller from affecting the surface density of the film after film formation, and also avoiding bridging, rat holes and other phenomena caused by the accumulation of powder above the roller, which affect the uniformity of the powder above the roller, so that the density of the film rolled by the roller is more uniform and the yield is higher.

[0008] This utility model also provides a feeding device for agglomerated powder, including a vibrating feeding mechanism and a material smoothing mechanism. The discharge position of the vibrating feeding mechanism is correspondingly set to the infeed position of the material smoothing mechanism, and the material smoothing mechanism is the material smoothing mechanism described above.

[0009] The agglomerated powder feeding device of this utility model includes the above-mentioned material accumulation and smoothing mechanism, and therefore has the advantages of the above-mentioned material accumulation and smoothing mechanism, which will not be described in detail here. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 A schematic diagram of the material smoothing mechanism provided in an embodiment of this utility model at one angle;

[0012] Figure 2 A schematic diagram of the material smoothing mechanism provided in another embodiment of this utility model;

[0013] Figure 3 A structural schematic diagram of the material smoothing mechanism provided in this embodiment of the utility model from another angle;

[0014] Figure 4 for Figure 3 A schematic diagram of the cross-sectional structure at position AA in the middle;

[0015] Figure 5 A schematic diagram of the material smoothing mechanism provided in this embodiment of the present invention after removing one side wall of the receiving hopper and an adjusting plate;

[0016] Figure 6 A schematic diagram of the scraper at one angle provided in an embodiment of this utility model;

[0017] Figure 7 This is a structural schematic diagram of the scraper from another angle provided in an embodiment of the present utility model;

[0018] Figure 8 A schematic diagram of the structure of the connecting plate at one angle provided in an embodiment of this utility model;

[0019] Figure 9 This is a structural schematic diagram of the connecting plate provided in another embodiment of the present utility model;

[0020] Figure 10 A schematic diagram of the receiving hopper at one angle provided in an embodiment of this utility model;

[0021] Figure 11 This is a structural schematic diagram of the receiving hopper from another angle provided in an embodiment of the present utility model;

[0022] Figure 12 This is a schematic diagram of the structure of the agglomerated powder feeding device provided in an embodiment of the present invention from one angle.

[0023] Figure 13 This is a structural schematic diagram of the agglomerated powder feeding device provided in an embodiment of the present invention from another angle.

[0024] in:

[0025] 1. Material smoothing mechanism,

[0026] 100. Material receiving area; 101. Receiving hopper; 1011. Through hole; 102. Scraper; 1021. Receiving plate; 1022. Connecting plate; 1023. First plate; 1024. Slanted sealing plate; 1025. Raised ridge; 1026. Second plate; 1027. Baffle plate; 1028. Fourth connecting hole; 103. Detection device; 104. Slide rail; 105. Linear drive device; 106. Second scale; 107. Second limit rod; 108. Adjusting plate; 109. Handwheel; 110. Bidirectional screw; 111. Material pile; 112. Connecting plate; 1121. First connecting hole; 1122. Second connecting hole; 1123. Third connecting hole; 113. First limit rod; 114. Guide shaft; 115. First scale.

[0027] 2. Rolls,

[0028] 3. Receiving mechanism,

[0029] 4. Grading and screening mechanism,

[0030] 5. Vibrating conveyor mechanism,

[0031] 6. Support rails,

[0032] 7. Support plate,

[0033] 8. Support frame. Detailed Implementation

[0034] This utility model discloses a material smoothing mechanism that makes the powder height above the roller uniform, avoiding the influence of inconsistent powder height in the feed area of ​​the roller on the surface density of the film after film formation, resulting in more uniform film density and higher yield of the film rolled by the roller.

[0035] This utility model also discloses a feeding device for agglomerated powder.

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0037] See Figures 1 to 7 The material smoothing mechanism 1 of this utility model includes a receiving hopper 101 with openings at both the top and bottom. The receiving hopper 101 surrounds the feeding area of ​​the roller 2 and is located at the top of the feeding area of ​​the roller 2. A pushing mechanism and a width-limiting mechanism are provided inside the receiving hopper 101. The pushing mechanism includes a scraper 102, which is disposed within the material-containing area 100 of the receiving hopper 101 defined by the width-limiting mechanism. The scraper 102 moves horizontally to smooth the powder within the material-containing area 100.

[0038] The powder in the material holding area 100 is placed in the feeding area of ​​the roller 2. The width limiting mechanism limits the length of the material holding area 100 so that the opening length at the bottom of the material holding area 100 corresponds to the length of the feeding area of ​​the roller 2, so as to obtain a film of the required length.

[0039] The material leveling mechanism 1 of this utility model uses a horizontally moving scraper 102 set in the material holding area 100. The scraper 102 moves horizontally to level the powder falling above the roller 2, ensuring that the material accumulation height in the feeding area above the roller 2 is kept within a set range. This makes the powder height above the roller 2 uniform, avoiding the formation of a material pile with a high center and low periphery above the roller 2. It also avoids the uneven powder height in the feeding area of ​​the roller 2 from affecting the surface density of the film after film formation. Furthermore, it avoids bridging, rat holes, and other phenomena caused by the accumulation of powder above the roller 2, which affect the uniformity of the powder above the roller 2. This results in a more uniform density of the film rolled by the roller 2 and a higher yield.

[0040] Specifically, the width W of the scraper 102 is set along the long side of the material receiving area 100, such as... Figure 4 and Figure 7 As shown, the horizontal movement direction of the scraper 102 is as follows: Figure 5 As indicated by the arrow, the horizontal movement direction of the scraper 102 is perpendicular to the long side of the material receiving area 100. The horizontal movement of the scraper 102 flattens the top of the material pile 111 above the roller 2. Figure 5 As shown.

[0041] In order to achieve a better scraping effect on the top of the material pile 111 above the roller 2, two scraper plates 102 are provided. The two scraper plates 102 are arranged opposite each other and are located on both sides of the material receiving area 100 to avoid the accumulation of powder on the side wall of the material receiving area 100, so as to make the top of the material pile 111 flatter.

[0042] To better push the powder at the central tip of the accumulated powder pile to the sides, a pushing convex plate is provided at one end of the scraper 102 near the receiving area 100. The pushing convex plate has a raised ridge 1025 that protrudes towards the center of the receiving area 100. The raised ridge 1025 extends along the height direction of the pushing convex plate and is located at the middle position of the pushing convex plate. Further, referring to… Figure 6 and Figure 7 The pushing convex plate includes a first plate 1023 and a second plate 1026, which are respectively disposed on both sides of the protruding ridge 1025. The protruding ridge 1025 is formed by welding the adjacent sides of the first plate 1023 and the second plate 1026. The protruding ridge 1025 can be an arc-shaped protruding ridge or a folded protruding ridge. Since the first plate 1023 and the second plate 1026 need to form the pushing convex plate with a protrusion in the middle position, the side of the first plate 1023 closer to the protruding ridge 1025 is closer to the center of the material receiving area 100 than the side farther away from the protruding ridge 1025. Similarly, the side of the second plate 1026 closer to the protruding ridge 1025 is closer to the center of the material receiving area 100 than the side farther away from the protruding ridge 1025. The top of the first plate 1023 and the second plate 1026 are provided with inclined sealing plates 1024. By providing inclined sealing plates 1024, the top openings of the first plate 1023 and the second plate 1026 are sealed to prevent powder from leaking from these openings.

[0043] Since the scraper 102 needs to move horizontally to push or hang materials, the scraper 102 also includes a connecting plate 1022 connected to the drive device. The connecting plate 1022 is connected to the power output end of the linear drive device 105. Specifically, the power output end of the linear drive device 105 is provided with a connecting plate 112, and the linear drive device 105 and the scraper 102 are connected through the connecting plate 112. The linear drive device 105 can be a servo motor. In one embodiment, such as... Figure 8 and Figure 9As shown, the connecting plate 112 is provided with a first connecting hole 1121, a second connecting hole 1122, and a third connecting hole 1123. The third connecting hole 1123 is used to connect a guide shaft 114, which is slidably connected to a bushing, and the bushing is connected to the receiving hopper 101. To improve the stability of the guide, two guide shafts 114 are provided, which are respectively located on both sides of the power output end of the linear drive device 105, as shown. Figure 2 As shown. Accordingly, two third connecting holes 1123 are provided. The second connecting hole 1122 is used to connect the power output end of the linear drive device 105. The first connecting hole 1121 is used to connect with the connecting plate 1022. In order to facilitate the connection between the power output end of the linear drive device 105 and the scraper plate 102 provided in the material receiving area 100, the receiving hopper 101 is provided with a through hole 1011, through which the power output end of the linear drive device 105 passes and connects to the scraper plate 102.

[0044] The scraper 102 also includes a receiving plate 1021, which is located at the end of the scraper 102 away from the material receiving area 100. Specifically, the receiving plate 1021 and the pushing protrusion are located on opposite sides of the connecting plate 1022. The receiving plate 1021 is positioned corresponding to the feed end. To facilitate material flow, the receiving plate 1021 is inclined. The end of the receiving plate 1021 closer to the connecting plate 1022 is closer to the material receiving area 100 than the end further away from the connecting plate 1022. This structural arrangement not only facilitates material flow but also helps to receive powder entering from the feed end. A baffle plate 1027 is located at the end of the receiving plate 1021 away from the connecting plate 1022. The baffle plate 1027 is positioned along the height of the receiving hopper 101, preventing powder falling onto the receiving plate 1021 from being ejected from the top of the scraper 102.

[0045] The scraper 102 is detachably connected to the power output end of the linear drive device 105. Specifically, the connecting plate 1022 is provided with a fourth connecting hole 1028, which corresponds to the first connecting hole 1121. The scraper 102 is connected to the first connecting hole 1121 via a connector. The connector can be a connecting bolt.

[0046] To facilitate adjustment of the installation height of the scraper 102 according to usage requirements, the fourth connecting hole 1028 is an elongated hole extending along the height direction, such as... Figure 6As shown, the fourth connecting hole 1028 is correspondingly provided with the first connecting hole 1121. Furthermore, multiple first connecting holes 1121 are provided, arranged along the height direction, and the length of the fourth connecting hole 1028 is not less than the distance between the far ends of two adjacent first connecting holes 1121. In one embodiment, four fourth connecting holes 1028 are provided, with two fourth connecting holes 1028 arranged in one column, and correspondingly, two columns of first connecting holes 1121 are provided.

[0047] In one embodiment, the width-limiting mechanism includes adjusting plates 108. To limit the space of the material-containing area 100, two adjusting plates 108 are provided, positioned opposite each other on both sides of the material-containing area 100. The adjusting plates 108 are slidably disposed within the inner cavity of the receiving hopper 101, with their sides contacting the inner surface of the receiving hopper 101 to prevent material leakage. The adjusting plates 108 are positioned along the wide side of the material-containing area 100. To facilitate adjustment of the accommodating length of the material-containing area 100, the material-leveling mechanism 1 also includes an adjusting mechanism, through which the spacing between the two adjusting plates 108 is adjusted.

[0048] Specifically, the adjustment mechanism includes a bidirectional screw 110 and a limiting rod, such as... Figure 10 and Figure 11 As shown, the bidirectional screw 110 is provided with a first thread and a second thread with opposite directions of rotation. One adjusting plate 108 is threaded to the first thread, and another adjusting plate 108 is threaded to the second thread. The adjusting plate 108 is provided with a limiting through hole, and the limiting rod passes through the limiting through hole. Both ends of the bidirectional screw 110 are rotatably connected to the receiving hopper 101. To ensure the reliability of the limiting, the limiting rod includes a first limiting rod 113 and a second limiting rod 107, which are arranged parallel to the bidirectional screw 110 and are located on opposite sides of the receiving hopper 101. For easy adjustment of the bidirectional screw 110, a handwheel 109 is connected to its end.

[0049] To facilitate viewing the length of the material holding area 100, the adjustment mechanism further includes a first scale 115, which is connected to the receiving hopper 101. The first scale 115 is set parallel to the bidirectional screw 110. By setting the first scale 115, it is easy to view the adjustment length of the adjustment plate 108 and the length of the material holding area 100.

[0050] To facilitate monitoring of the powder height within the material holding area 100, a detection device 103 for detecting the material level height within the material holding area 100 is provided at the top of the receiving hopper 101. In one embodiment, the detection device 103 is a 3D profiler or a laser distance sensor to monitor the material within the material holding area 100 in real time and trigger a material shortage alarm. The 3D profiler can obtain 3D images, and by acquiring XYZ coordinate information, it can also obtain information such as height, volume, and cross-sectional area, making the height detection data more accurate. To facilitate adjustment of the position of the detection device 103, the detection device 103 is slidably connected to a slide rail 104, which is fixedly positioned on the top side of the receiving hopper 101. In use, after setting the basic height, the 3D profiler can perform real-time detection. If the material drop height is less than the set threshold, the vibrating feeding mechanism will feed the material; if it is higher than the set threshold, feeding will stop.

[0051] The inner wall of the material holding area 100 is provided with a second scale 106, which is set along the height direction of the material holding area 100, such as... Figure 5 As shown, the second scale 106 is connected to the inner wall of the adjustment plate 108 near the material holding area 100.

[0052] The material smoothing mechanism 1 of this invention drives the scraper 102 to move horizontally back and forth via a linear drive device 105. This disperses the powder accumulated in the middle to both sides, thereby breaking the angle of repose formed by the material accumulation and maximizing the uniform distribution of powder above the roller 2. By monitoring the material height in the film-forming receiving hopper 101 in real time and dynamically compensating for the feeding speed, the problem of inconsistent film surface density caused by the material height difference above the roller 2 is eliminated, improving film stability and enhancing film quality.

[0053] This utility model also provides a feeding device for agglomerated powder, including a vibrating feeding mechanism and a material smoothing mechanism 1. The discharge position of the vibrating feeding mechanism corresponds to the infeed position of the material smoothing mechanism 1, and the material smoothing mechanism 1 is the aforementioned material smoothing mechanism. Specifically, the vibrating feeding mechanism includes a receiving mechanism 3, a grading and screening mechanism 4, and a vibrating conveying mechanism 5, which are sequentially connected along the conveying direction, such as... Figure 12 and Figure 13 As shown. The receiving mechanism 3 is used to receive the added powder, and the grading and screening mechanism 4 is used to grade and screen the powder flowing out of the receiving mechanism 3 to prevent the powder from agglomerating during the transmission process. This ensures that the powder flowing to the vibrating conveying mechanism 5 is in a loose and non-agglomerated state. The vibrating conveying mechanism 5 vibrates and conveys the powder to the accumulation and smoothing mechanism 1 to prevent the powder from agglomerating during the transmission process and to ensure that the diameter of the powder flowing to the accumulation and smoothing mechanism 1 is within the required range. The discharge end of the accumulation and smoothing mechanism 1 corresponds to the loading position of the roller 2.

[0054] The bottom of the grading and screening mechanism 4 is equipped with a support frame 8, such as... Figure 12 and Figure 13 As shown, the bottom of the support frame 8 is slidably connected to the support guide rail 6, facilitating the sliding of the grading and screening mechanism 4 along the support guide rail 6 to change its position. The support guide rail 6 is fixedly connected to the support plate 7. When the vibrating conveying mechanism 5 is in operation, it is positioned at the bottom of the support frame 8 to receive the powder sieved by the grading and screening mechanism 4. The support plate 7 is connected to the main support structure of the device.

[0055] In the description of this solution, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this solution, "multiple" means two or more, unless otherwise explicitly specified.

[0056] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0057] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A build-up smoothing mechanism, characterized by, The device includes a receiving hopper with openings at both the top and bottom. The receiving hopper is located around the feeding area of ​​the roller. The receiving hopper is equipped with a pushing mechanism and a width limiting mechanism. The pushing mechanism includes a scraper. The scraper is located within the material holding area of ​​the receiving hopper defined by the width limiting mechanism. The scraper moves horizontally to scrape the powder in the material holding area.

2. The build pad smoothing mechanism of claim 1, wherein, The width direction of the scraper is arranged along the long side of the material receiving area, and the horizontal movement direction of the scraper is perpendicular to the long side of the material receiving area.

3. The build pad smoothing mechanism of claim 2, wherein, The scraper is provided in two parts, which are arranged opposite to each other and are located on both sides of the material receiving area; A pushing convex plate is provided at one end of the scraper plate near the material receiving area. The pushing convex plate is provided with a raised ridge that protrudes towards the center of the material receiving area. The raised ridge extends along the height direction of the pushing convex plate and is located at the middle position of the pushing convex plate.

4. The build pad smoothing mechanism of claim 3, wherein, The pushing plate includes a first plate and a second plate, which are respectively disposed on both sides of the protruding ridge, and the sides of the first plate and the second plate that are close to each other are welded to form the protruding ridge.

5. A build pad smoothing mechanism according to claim 3 or 4, wherein, The scraper also includes a connecting plate and a receiving plate. The receiving plate is located at the end of the scraper away from the material receiving area, and the receiving plate is connected to the pushing protrusion through the connecting plate. The connecting plate is connected to the power output end of the linear drive device, and the receiving plate is correspondingly set to the feeding end.

6. The build pad smoothing mechanism of claim 5, wherein, The scraper blade is detachably connected to the power output end of the linear drive device; The power output end of the linear drive device is provided with a connecting plate, and the connecting plate is provided with a first connecting hole arranged along the height direction of the material holding area, and the scraper is connected to the position of the first connecting hole.

7. The accumulation smoothing mechanism of claim 1 wherein, The width limiting mechanism includes two adjustment plates, which are disposed opposite to each other on both sides of the material receiving area. The adjustment plates are disposed along the wide side of the material receiving area. The two adjustment plates adjust their spacing via an adjustment mechanism.

8. The build pad smoothing mechanism of claim 7, wherein, The adjustment mechanism includes a bidirectional screw and a limiting rod. The bidirectional screw is provided with a first thread and a second thread with opposite directions of rotation. One adjustment plate is threaded to the first thread, and the other adjustment plate is threaded to the second thread. The adjustment plate is provided with a limiting through hole, and the limiting rod passes through the limiting through hole.

9. The build pad smoothing mechanism of claim 8, wherein, The adjustment mechanism also includes a first scale, which is arranged parallel to the bidirectional screw.

10. The accumulation smoothing mechanism of claim 1, wherein, The top of the receiving hopper is equipped with a detection device for detecting the material level height in the material holding area; The inner wall of the material holding area is provided with a second scale, which is set along the height direction of the material holding area.

11. An agglomerated powder feeding device comprising a vibratory feeder and an accumulator smoothing mechanism, the discharge position of the vibratory feeder being arranged in correspondence with the feed position of the accumulator smoothing mechanism, characterized in that, The material smoothing mechanism is the material smoothing mechanism according to any one of claims 1-10.

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