Dry coating equipment and dry coating equipment control method

Abstract

The present invention relates to the technical field of coating, and in particular, to a dry coating device and a control method for a dry coating device. The mixed material supply device includes a blanking bin, a cloth screw, and a blanking member; the cloth screw is rotatably arranged in the blanking bin; the blanking member is accommodated in the blanking bin and is located on the discharge side of the cloth screw; the blanking member divides the space on the discharge side of the cloth screw into a transfer channel and a blanking channel, and the transfer channel is located on the feed side of the blanking member; wherein, the cloth screw is used to uniformly introduce the material on its feed side into the transfer channel; the blanking member is used to introduce a preset amount of material in the transfer channel into the blanking channel. The mixed material supply device can improve the discharge uniformity of the blanking bin, avoid the situation of material shortage at local positions during discharge, so that the density of each area in the electrode film output from the blanking bin and roll-pressed can be kept consistent, improve the areal density, and avoid the partial position of the pole piece being too thin or having holes.

Description

Technical Field

[0001] The present invention relates to the technical field of coating, and in particular, to a dry coating device and a control method for a dry coating device. Background Art

[0002] One of the processes of dry coating is as follows. The mixed material after fibrillization treatment falls through a blanking bin into a pressure roller group for rolling to form an electrode film with self-supporting characteristics. After the electrode film is laminated with a current collector, it is rolled by the pressure roller group to form a pole piece. Since the width of the electrode film is relatively large, in order to output the mixed material to the conveyor belt at one time according to the width requirement of the electrode film through a single blanking bin, the discharge port of the blanking bin should be adapted to the width of the electrode film. Then, the mixed material input port of the blanking bin is only located at a partial position on the feeding side of the blanking bin, that is, the length of the blanking bin in the width direction of the electrode film is much larger than the mixed material input port. In this case, the uniformity of the mixed material falling into the blanking bin is poor, mainly concentrated near the mixed material input port, and there may be a lack of material at the position of the blanking bin far from the mixed material input port, resulting in difficulty in maintaining the same density in each area of the electrode film output by the blanking bin and rolled, poor areal density, and even partial positions of the pole piece having a small thickness or holes. Summary of the Invention

[0003] To solve one of the above problems, the present invention provides a mixed material supply device, a dry coating device and a control method for a dry coating device, which can improve the discharge uniformity of the blanking bin, avoid the lack of material at local positions during discharging, so that the density of each area of the electrode film output by the blanking bin and rolled can be kept consistent, improve the areal density, and avoid partial positions of the pole piece having a small thickness or holes.

[0004] Embodiments of the present invention can be implemented as follows:

[0005] In a first aspect, the present invention provides a mixed material supply device, which includes a blanking bin, a feeding screw and a blanking member;

[0006] The feeding screw is rotatably arranged in the blanking bin;

[0007] The blanking member is accommodated in the blanking bin and is located on the discharge side of the feeding screw; the blanking member divides the space on the discharge side of the feeding screw into a transfer channel and a blanking channel, and the transfer channel is located on the feeding side of the blanking member;

[0008] Wherein, the feeding screw is used to uniformly introduce the material on its feeding side into the transfer channel; the blanking member is used to introduce a preset amount of material in the transfer channel into the blanking channel.

[0009] In an optional embodiment, the blanking member includes a blanking rod and a plurality of blanking blades; the blanking rod is rotatably connected to the blanking bin;

[0010] A plurality of blanking blades are arranged at intervals around the axis of the blanking rod on the outer periphery of the blanking rod, and the areas between any two adjacent blanking blades together form a material storage bin for storing a preset amount of material;

[0011] Wherein, any one of the material storage bins can be transferred between a first position and a second position; when one of the material storage bins is in the first position, the material storage bin is communicated with the transfer channel, and the material in the transfer channel is introduced into the material storage bin; when one of the material storage bins is in the second position, the material storage bin is communicated with the blanking channel, and the material in the material storage bin is introduced into the blanking channel.

[0012] In an alternative embodiment, an activity cavity for the blanking member to rotate is provided in the blanking bin, and the activity cavity is provided with a first opening communicated with the transfer channel and a second opening communicated with the blanking channel;

[0013] Wherein, the contour of the first opening and the contour of the second opening are both adapted to the inlet of the material storage bin.

[0014] In an alternative embodiment, the mixing and supplying device further includes a first driving unit and a second driving unit, and both the first driving unit and the second driving unit are connected to the outer wall of the blanking bin; the first driving unit is in transmission connection with the cloth screw, and the second driving unit is in transmission connection with the blanking rod.

[0015] In an alternative embodiment, the cloth screw includes a first spiral section and a second spiral section, the first spiral section is connected to the second spiral section and has opposite spiral directions; the feed inlet of the blanking bin is located on the feed side at the connection of the first spiral section and the second spiral section.

[0016] In an alternative embodiment, the mixing and supplying device further includes a material sensing unit, the material sensing unit is connected to the blanking bin, and is located at the pushing end of the cloth screw in the transfer channel, and is used for sensing whether there is material in the transfer channel.

[0017] In a second aspect, the present invention provides a dry coating device, and the dry coating device includes a conveyor belt and the above-mentioned mixing and supplying device;

[0018] The conveyor belt is arranged on the discharging side of the mixing and supplying device, and is used for receiving the material discharged from the blanking channel.

[0019] In an alternative embodiment, the dry coating device further includes a first weighing unit, the first weighing unit is connected to the conveyor belt, and is used for detecting the weight of the conveyor belt.

[0020] In an alternative embodiment, the dry coating device further includes a plurality of second weighing units and a plurality of replenishing bins, and the plurality of second weighing units correspond to the plurality of replenishing bins one by one;

[0021] Along the conveying direction of the conveyor belt, multiple feeding bins are all located in front of the blanking bin, and multiple second weighing units and multiple feeding bins are all arranged along the width direction of the conveyor belt;

[0022] Along the width direction of the conveyor belt, the conveyor belt is provided with multiple detection areas, and each detection area corresponds to a second weighing unit and a feeding bin;

[0023] Each second weighing unit is used to detect the weight of the material in the corresponding detection area, and each feeding bin is used to replenish the material into the corresponding detection area.

[0024] In a third aspect, the present invention provides a control method for a dry coating device, which is implemented by using the above dry coating device, controlling the first driving unit to drive the cloth screw to rotate, and controlling the second driving unit to drive the blanking rod to rotate;

[0025] Receiving a material induction signal output by the material induction unit, which characterizes whether there is material in the transfer channel; in the case that there is no material in the transfer channel, controlling the second driving unit to stop running, or controlling both the first driving unit and the second driving unit to stop running;

[0026] Controlling the conveyor belt to run along a preset conveying direction;

[0027] Receiving a first weight signal output by the first weighing unit, which characterizes the weight of the conveyor belt; in the case that the weight of the conveyor belt gradually decreases, controlling the speed of the conveyor belt to decrease, or controlling the rotation speed of the second driving unit to increase;

[0028] Receiving a second weight signal output by each second weighing unit, which characterizes the weight of the corresponding detection area; if the weight of one of the detection areas is less than a preset weight, controlling the feeding bin corresponding to the detection area to replenish the material into the detection area; if the weight of one of the detection areas is greater than the preset weight, marking the detection area.

[0029] The beneficial effects of the embodiments of the present invention include:

[0030] The mixing and supply device includes a blanking bin, a cloth screw and a blanking part; the cloth screw is rotatably arranged in the blanking bin; the blanking part is accommodated in the blanking bin and is located on the discharging side of the cloth screw; the blanking part divides the space on the discharging side in the discharging direction of the cloth screw into a transfer channel and a blanking channel, and the transfer channel is located on the feeding side of the blanking part;

[0031] During the operation of the mixing and feeding device, the rotation of the cloth screw can make the materials entering the blanking bin evenly mixed and evenly introduced into the transfer channel on the discharging side. Through the operation of the feeding component, a preset amount of materials in the transfer channel can be introduced into the feeding channel and then into the conveyor belt located on the discharging side of the mixing and feeding device. In this way, the uniformity of the blanking from the blanking bin can be improved, and the situation of material shortage at local positions during blanking can be avoided. As a result, the density of each area in the electrode film output from the blanking bin and roll-pressed can be kept consistent, the areal density can be increased, and the thickness of some positions of the electrode sheet can be prevented from being too small or holes from appearing. Description of the Drawings

[0032] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0033] Figure 1 Structural schematic diagram of the mixing and feeding device in the embodiment of the present invention;

[0034] Figure 2 Installation schematic diagram of the cloth screw and the feeding component in the embodiment of the present invention;

[0035] Figure 3 Structural schematic diagram of the feeding component in the embodiment of the present invention;

[0036] Figure 4 Structural schematic diagram of the partition plate in the embodiment of the present invention;

[0037] Figure 5 Structural schematic diagram of the movable cavity in the embodiment of the present invention;

[0038] Figure 6 Structural schematic diagram of the cloth screw in the embodiment of the present invention;

[0039] Figure 7 Structural schematic diagram of the dry coating equipment in the embodiment of the present invention;

[0040] Figure 8 Working schematic diagram of the dry coating equipment in the embodiment of the present invention;

[0041] Figure 9 Structural schematic diagram of the first weighing unit, the second weighing unit and the feeding bin in the embodiment of the present invention.

[0042] Icons: 100 - Blending supply device; 110 - Feeding bin; 120 - Cloth screw; 130 - Feeding part; 111 - Transfer channel; 112 - Feeding channel; 131 - Feeding rod; 132 - Feeding blade; 133 - Material storage bin; 134 - Partition; 113 - Movable cavity; 114 - First opening; 115 - Second opening; 140 - First driving unit; 150 - Second driving unit; 121 - First spiral section; 122 - Second spiral section; 200 - Dry coating equipment; 210 - Conveyor belt; 220 - First weighing unit; 201 - First pressure roller group; 202 - Current collector; 203 - Second pressure roller group; 230 - Second weighing unit; 240 - Refill bin. Detailed implementation manners

[0043] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some but not all of the embodiments of the present invention. The components of the embodiments of the present invention described and illustrated herein generally may be arranged and designed in a variety of different configurations.

[0044] Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0045] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not require further definition and explanation in subsequent drawings.

[0046] In the description of the present invention, it should be noted that if terms such as "upper", "lower", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship in which the product of the invention is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.

[0047] In addition, if terms such as "first", "second", etc. are used only for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0048] It should be noted that the features in the embodiments of the present invention may be combined with each other without conflict.

[0049] Please refer toFigure 1 and Figure 2 , this embodiment provides a mixing and supplying device 100, which includes a blanking bin 110, a feeding screw 120 and a blanking member 130;

[0050] The feeding screw 120 is rotatably arranged in the blanking bin 110;

[0051] The blanking member 130 is accommodated in the blanking bin 110 and is located on the discharging side of the feeding screw 120; the blanking member 130 divides the space on the discharging side of the feeding screw 120 into a transfer channel 111 and a blanking channel 112, and the transfer channel 111 is located on the feeding side of the blanking member 130;

[0052] Wherein, the feeding screw 120 is used to uniformly introduce the material on its feeding side into the transfer channel 111; the blanking member 130 is used to introduce a preset amount of material in the transfer channel 111 into the blanking channel 112.

[0053] It should be noted that when setting the blanking bin 110, its top is the feeding port and its bottom is provided with a discharging port. The material entering the blanking bin 110 from the feeding port will be uniformly introduced into the transfer channel 111 under the action of the feeding screw 120; and the discharging port is communicated with the blanking channel 112, and the material introduced into the blanking channel 112 by the blanking member 130 will be discharged from the discharging port. Moreover, in this embodiment, the mixed material falls from the previous unit to the next unit under the action of gravity, that is, it falls in the direction from the feeding screw 120 towards the blanking member 130. Therefore, taking the positions of the feeding side and the discharging side of the feeding screw 120 in this embodiment as an example, the feeding side of the feeding screw 120 is above the feeding screw 120, and its discharging side is below it; while in other embodiments, the air flow mode can be combined to guide the transmission path of the mixed material, so it is not limited to guiding the material by gravity, and therefore its feeding side is not limited to above it, and its discharging side is not limited to below it.

[0054] Please refer to Figure 1 and Figure 2 , the working principle of the mixing and supplying device 100 is as follows:

[0055] The mixing and supplying device 100 includes a blanking bin 110, a feeding screw 120 and a blanking member 130; the feeding screw 120 is rotatably arranged in the blanking bin 110; the blanking member 130 is accommodated in the blanking bin 110 and is located on the discharging side of the feeding screw 120; the blanking member 130 divides the space on the discharging side of the feeding screw 120 into a transfer channel 111 and a blanking channel 112, and the transfer channel 111 is located on the feeding side of the blanking member 130;

[0056] During the operation of the mixture supply device 100, the rotation of the cloth screw 120 can make the materials entering the blanking bin 110 evenly mixed and evenly introduced into the transfer channel 111 on the discharging side. And through the operation of the blanking member 130, a preset amount of materials in the transfer channel 111 can be introduced into the blanking channel 112 and enter the conveyor belt 210 on the discharging side of the mixture supply device 100. It should be noted that during the process of the blanking member 130 introducing the materials in the transfer channel 111 into the blanking channel 112, it uses a single time to introduce a preset amount of materials into the blanking channel 112. The preset amount of materials can be adjusted according to the usage situation. And during the continuous operation process, through the continuous operation of the blanking member 130, the blanking bin 110 can continuously export a preset amount of materials. Thus, in this way, the discharging uniformity of the blanking bin 110 can be improved, avoiding the situation of material shortage in local positions during discharging. Thereby, the density of each region in the electrode film output and roll-pressed by the blanking bin 110 can be kept consistent, the areal density can be increased, and the thickness of some positions of the electrode plate can be prevented from being too small or holes from appearing.

[0057] It should be noted that in this embodiment, the mixture supply device 100 is described by taking its application in the coating technical field as an example. And in other embodiments of the present invention, the mixture supply device 100 can also be used in other fields to solve the mixture supply problems in other fields.

[0058] Furthermore, please refer to Figures 1 - 3 , in this embodiment, based on the above content, it can be known that during the operation of the blanking member 130, the purpose is to introduce a preset amount of materials from the transfer channel 111 into the blanking channel 112. Therefore, in order to enable the blanking member 130 to conduct quantitative feeding, the blanking member 130 includes a blanking rod 131 and a plurality of blanking blades 132; the blanking rod 131 is rotatably connected to the blanking bin 110;

[0059] The plurality of blanking blades 132 are arranged at intervals around the axis of the blanking rod 131 on the outer periphery of the blanking rod 131, and the regions between any two adjacent blanking blades 132 together form a material storage bin 133 for accommodating a preset amount of materials;

[0060] Among them, any one of the material storage bins 133 can be transferred between a first position (such as shown by the mark A in Figure 2 ) and a second position (such as shown by the mark B in Figure 2 ); when one of the material storage bins 133 is in the first position, the material storage bin 133 is communicated with the transfer channel 111, and the materials in the transfer channel 111 are introduced into the material storage bin 133; when one of the material storage bins 133 is in the second position, the material storage bin 133 is communicated with the blanking channel 112, and the materials in the material storage bin 133 are introduced into the blanking channel 112.

[0061] Please refer to Figure 4 and in combination with Figures 1 - 3 During the rotation of the blanking rod 131 for material guiding, to improve the use stability of the material storage bin 133 and avoid the situation where the volume of the material storage bin 133 changes due to the deformation of the blanking blade 132, therefore, the blanking member 130 may further include a partition plate 134. By arranging the partition plate 134, the material storage bin 133 can be divided into multiple sub-chambers, thereby improving the structural strength of the blanking blade 132, further improving the stability of the material storage bin 133. At the same time, it can also prevent the powder between the positions of the sub-chambers from transferring to each other during the rotation of the blanking rod 131, which affects the uniformity of the material storage bin 133.

[0062] Through the above structural arrangement, by rotating the blanking member 130 relative to the blanking bin 110, multiple material storage bins 133 on the blanking member 130 can change positions between the first position and the second position, so that the discharging action of the blanking bin 110 can be carried out continuously; and when installing the blanking blades 132, by adjusting the installation spacing between the blanking blades 132, the volume of the material storage bin 133 can be adjusted.

[0063] It should be noted that when setting the blanking rod 131 and the blanking blade 132 connected to the blanking rod 131, the blanking rod 131 and the blanking blade 132 can be parallel to the outlet of the blanking bin 110 and horizontally arranged, so that the material in the material storage bin 133 at the second position can fall evenly, thereby improving the uniformity of blanking.

[0064] Furthermore, please refer to Figure 5 and in combination with Figures 1 - 4 In this embodiment, as can be seen from the above content, when the material storage bin 133 is in the first position, since the material storage bin 133 is communicated with the transfer channel 111, therefore, the material in the material storage bin 133 will be introduced into the material storage bin 133. During this process, to avoid problems such as material jamming and leakage, therefore, an activity cavity 113 for the blanking member 130 to rotate is provided in the blanking bin 110. The activity cavity 113 is provided with a first opening 114 communicated with the transfer channel 111 and a second opening 115 communicated with the blanking channel 112; the activity cavity 113 is a columnar cavity, and to avoid the inner wall of the activity cavity 113 being scratched by the blanking blade 132, the blanking rod 131 can be made of a metal part, while the blanking blade 132 is a non-metal part, to avoid the blanking blade 132 rubbing against the inner wall of the activity cavity 113, which causes damage to the blanking bin 110; in addition, a plastic anti-scratch part can also be provided at the end of the blanking blade 132 in contact with the inner wall of the activity cavity 113 to avoid the inner wall of the activity cavity 113 being scratched by the blanking blade 132;

[0065] Among them, the outlines of the first opening 114 and the second opening 115 are both adapted to the entrance of the material storage bin 133. It should be noted that the outlines of the first opening 114 and the second opening 115 being adapted to the entrance of the material storage bin 133 means that the length and width dimensions and the outline shape of the first opening 114 are the same as those of the entrance of the blanking bin 110. Similarly, the length and width dimensions and the outline shape of the second opening 115 are the same as those of the entrance of the blanking bin 110. Moreover, the entrance of the blanking bin 110 refers to the opening formed by two adjacent blanking blades 132 enclosing each other.

[0066] To drive the cloth feeding screw 120 and the blanking rod 131 to rotate, therefore, the mixing and feeding device 100 further includes a first driving unit 140 and a second driving unit 150. Both the first driving unit 140 and the second driving unit 150 are connected to the outer wall of the blanking bin 110. The first driving unit 140 is in transmission connection with the cloth feeding screw 120, and the second driving unit 150 is in transmission connection with the blanking rod 131.

[0067] Please refer to Figure 6 , and in combination with Figures 1 - 5 Moreover, to improve the efficiency of mixing and cloth feeding, therefore, the cloth feeding screw 120 includes a first spiral section 121 and a second spiral section 122. The first spiral section 121 is connected to the second spiral section 122 and has opposite spiral directions. In addition, the feeding port of the blanking bin 110 is located on the feeding side at the connection of the first spiral section 121 and the second spiral section 122. Such a setting method can shorten the distance between the feeding port and the end of the cloth feeding screw 120, reduce the distance gap for the material introduced from the feeding port to travel to the end of the cloth feeding screw 120, and thus can improve the cloth feeding efficiency of the cloth feeding screw 120 and improve the controllability at the same rotation speed.

[0068] Moreover, during the operation of the mixing and feeding device 100, to detect the feeding condition of the mixing and feeding device 100, therefore, the mixing and feeding device 100 further includes a material sensing unit. The material sensing unit can be a photoelectric sensor. The material sensing unit is connected to the blanking bin 110 and is located at the pushing end of the cloth feeding screw 120 in the transfer channel 111, and is used to sense whether there is material in the transfer channel 111. It should be noted that the principle of such a detection method is that when the blanking rod 131 rotates for blanking, the rotation of the cloth feeding screw 120 will continuously replenish the material into the transfer channel 111. Thus, the material condition in the mixing and feeding device 100 can be judged by detecting whether there is material in the transfer channel 111, so as to determine whether the mixing and feeding device 100 can work continuously.

[0069] Based on the above mixing and feeding device 100, please refer to Figures 7 - 9 , and in combination with Figures 1 - 6, the present invention further provides a dry coating device 200, which includes a conveyor belt 210, a first weighing unit 220, and the above-mentioned mixing and supply device 100;

[0070] The conveyor belt 210 is arranged on the discharging side of the mixing and supply device 100 and is used to receive the materials discharged from the blanking channel 112; the first weighing unit 220 is connected to the conveyor belt 210 and is used to detect the weight of the conveyor belt 210.

[0071] Please refer to Figures 1 - 9 , the dry coating device 200 further includes a first pressing roller group 201 and a second pressing roller group 203. The first pressing roller group 201 and the second pressing roller group 203 are located in the discharging direction of the conveyor belt 210 and are arranged in sequence along the preset transfer path of the materials. The first pressing roller group 201 is used to roll the materials output by the conveyor belt 210 to form an electrode film with self-supporting characteristics, and the second pressing roller group 203 is used to roll and compound the electrode film with the current collector 202. For easy understanding, the working principle is further elaborated as follows:

[0072] After the processed mixture enters the blanking bin 110, through the rotation of the cloth screw 120, the materials entering the blanking bin 110 are evenly mixed and can be evenly introduced into the transfer channel 111 on the discharging side; and through the operation of the blanking member 130, a preset amount of materials in the transfer channel 111 can be introduced into the blanking channel 112 and enter the conveyor belt 210 located on the discharging side of the mixing and supply device 100; then it is rolled by the first pressing roller group 201 to form an electrode film with self-supporting characteristics. After the electrode film is laminated with the current collector 202, it is rolled by the second pressing roller group 203 to form a pole piece;

[0073] Through the operation of the blanking member 130, the discharging uniformity of the blanking bin 110 can be improved, and the situation of material shortage at local positions during discharging can be avoided. Thus, the density of each area in the electrode film output from the blanking bin 110 and obtained by rolling can be kept consistent, the areal density can be increased, and the thickness of some positions of the pole piece can be prevented from being too small or holes from appearing.

[0074] During the operation of the conveyor belt 210, the weight of the conveyor belt 210 can be detected by the first weighing unit 220. Furthermore, after the weight of the conveyor belt 210 changes, by adjusting the blanking speed of the blanking member 130 or the transmission speed of the conveyor belt 210, the weight of the conveyor belt 210 can be made stable. Specifically, taking the case where the weight of the conveyor belt 210 becomes smaller as an example, at this time, the discharging amount at the discharging end of the conveyor belt 210 is greater than the feeding amount at the feeding end. In this case, the conveying speed of the conveyor belt 210 can be slowed down, or the rotation speed of the second driving unit 150 can be increased to increase the feeding amount until the weight is restored.

[0075] When setting the conveyor belt 210, the dry coating device 200 further includes an adjusting rod for adjusting the tension of the conveyor belt 210.

[0076] Furthermore, please refer to Figures 1 - 9 , in this embodiment, the dry coating device 200 further includes a plurality of second weighing units 230 and a plurality of feeding bins 240. The plurality of second weighing units 230 correspond to the plurality of feeding bins 240 one by one; moreover, the plurality of second weighing units 230 are located below the conveyor belt 210, and the plurality of feeding bins 240 are all located above the conveyor belt 210;

[0077] Along the conveying direction of the conveyor belt 210, the plurality of feeding bins 240 are all located in front of the blanking bin 110, and the plurality of second weighing units 230 and the plurality of feeding bins 240 are both arranged along the width direction of the conveyor belt 210;

[0078] Along the width direction of the conveyor belt 210, the conveyor belt 210 is provided with a plurality of detection areas, and each detection area corresponds to a second weighing unit 230 and a feeding bin 240;

[0079] Each second weighing unit 230 is used to detect the weight of the material in the corresponding detection area, and each feeding bin 240 is used to replenish the material into the corresponding detection area.

[0080] In this way, the conveyor belt 210 can be divided into multiple detection areas, and then independent detection can be carried out through the weights of each detection area. Thus, replenishment or marking can be carried out according to the weight change of each detection area to facilitate quality improvement. Among them, when the weight of the detection area is less than the preset weight, the feeding bin 240 is used for replenishment, and when the weight of the detection area is greater than the preset weight, it is marked to facilitate rejection in subsequent processes.

[0081] When setting the second weighing unit 230, to avoid the contact between the second weighing unit 230 and the conveyor belt 210 from interfering with the operation of the conveyor belt 210, therefore, the second weighing unit 230 is provided with rollers for rolling contact with the conveyor belt 210; when the second weighing unit 230 detects the weight of the corresponding detection area on the conveyor belt 210, it is necessary to mark the detection area with excessive weight and replenish the detection area with insufficient weight according to the weight detection results of all detection areas, that is, the preset weight can be a range value. Moreover, to control the feeding bin 240, an electromagnetic valve is provided at the discharge port of the feeding bin 240.

[0082] In summary, please refer to Figures 1 - 9, the present invention also provides a control method for a dry coating device 200, which is implemented by using the above-mentioned dry coating device 200. Control the first driving unit 140 to drive the fabric screw 120 to rotate, and control the second driving unit 150 to drive the blanking rod 131 to rotate;

[0083] Receive the material induction signal output by the material induction unit, which characterizes whether there is material in the transfer channel 111; when there is no material in the transfer channel 111, control the second driving unit 150 to stop running, or control both the first driving unit 140 and the second driving unit 150 to stop running;

[0084] Control the conveyor belt 210 to run along the preset conveying direction;

[0085] Receive the first weight signal output by the first weighing unit 220, which characterizes the weight of the conveyor belt 210; when the weight of the conveyor belt 210 gradually decreases, control the speed of the conveyor belt 210 to decrease, or control the rotation speed of the second driving unit 150 to increase;

[0086] Receive the second weight signal output by each second weighing unit 230, which characterizes the weight of the corresponding detection area; if the weight of one of the detection areas is less than the preset weight, control the corresponding feeding bin 240 of the detection area to feed the detection area; if the weight of one of the detection areas is greater than the preset weight, mark the detection area.

[0087] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A dry coating device, characterized in that: The dry coating equipment includes a mixing supply device, a conveyor belt, a first driving unit, a second driving unit, a first weighing unit and a material sensing unit; The mixing and supplying device comprises a material drop bin, a material distribution screw and a material dropper; the material distribution screw is rotatably arranged in the material drop bin; the material dropper is accommodated in the material drop bin and is located at the material discharge side of the material distribution screw; the material dropper divides the space located at the material discharge side of the material distribution screw into a transfer channel and a material dropper channel, and the transfer channel is located at the material feed side of the material dropper; the material distribution screw is used to uniformly introduce the material on its material feed side into the transfer channel; the material dropper is used to introduce a preset amount of material in the transfer channel into the material dropper channel; The conveyor belt is arranged at the discharge side of the mixing and supplying device and is used to receive the material discharged from the discharge channel; The first driving unit is connected to the feeding screw, the second driving unit is connected to the feeding rod, the material sensing unit is used to sense whether there is material in the transfer channel; the first weighing unit is connected to the conveyor belt and is used to detect the weight of the conveyor belt; A dry coating equipment control method using the dry coating equipment includes: Control the first driving unit to drive the material distribution screw to rotate, and control the second driving unit to drive the material discharging rod to rotate; receiving a material sensing signal output by a material sensing unit indicating whether there is material in the transfer channel; when there is no material in the transfer channel, controlling the second drive unit to stop running, or controlling both the first drive unit and the second drive unit to stop running; Controlling the conveyor belt to run along a preset conveying direction; A first weight signal representing the weight of the conveyor belt output by a first weighing unit is received; when the weight of the conveyor belt gradually decreases, the speed of the conveyor belt is controlled to decrease, or the speed of the second driving unit is controlled to increase.

2. The dry coating device according to claim 1, characterized in that: The material discharge member comprises a material discharge rod and a plurality of material discharge blades; the material discharge rod is rotatably connected to the material discharge bin; A plurality of the material discharge blades are arranged at intervals on the outer circumference of the material discharge rod around the axis of the material discharge rod, and the area between any two adjacent material discharge blades together forms a material storage bin for accommodating the preset amount of material; Among them, any one of the material storage bins can be transferred between the first position and the second position; when one of the material storage bins is in the first position, the material storage bin is connected to the transfer channel, and the material in the transfer channel is introduced into the material storage bin; when one of the material storage bins is in the second position, the material storage bin is connected to the discharge channel, and the material in the material storage bin is introduced into the discharge channel.

3. The dry coating device according to claim 2, characterized in that: The material drop bin is provided with an active cavity for the material drop member to rotate, and the active cavity is provided with a first opening communicating with the transfer channel and a second opening communicating with the material drop channel; Wherein, the contours of the first opening and the second opening are both adapted to the inlet of the material storage bin.

4. The dry coating equipment according to claim 2, characterized in that: Both the first driving unit and the second driving unit are connected to the outer wall of the blanking bin.

5. The dry coating equipment according to any one of claims 1-4, characterized in that: The cloth screw includes a first spiral section and a second spiral section, the first spiral section is connected to the second spiral section and has opposite helix directions; The feed inlet of the blanking bin is located on the feed side at the connection of the first spiral section and the second spiral section.

6. The dry coating equipment according to any one of claims 1-4, characterized in that: The material sensing unit is connected to the blanking bin and is located at the pushing end of the cloth screw in the transfer channel.

7. The dry coating equipment according to claim 1, characterized in that: The dry coating equipment further includes a plurality of second weighing units and a plurality of replenishing bins, and the plurality of second weighing units correspond to the plurality of replenishing bins one by one; Along the conveying direction of the conveyor belt, the plurality of replenishing bins are all located in front of the blanking bin, and the plurality of second weighing units and the plurality of replenishing bins are all arranged along the width direction of the conveyor belt; Along the width direction of the conveyor belt, the conveyor belt is provided with a plurality of detection areas, and each detection area corresponds to one of the second weighing units and one of the replenishing bins; Each second weighing unit is used to detect the material weight of the corresponding detection area, and each replenishing bin is used to replenish materials into the corresponding detection area.

8. A control method for dry coating equipment, implemented by using the dry coating equipment according to any one of claims 1-7, characterized in that: Control the first driving unit to drive the cloth screw to rotate, and control the second driving unit to drive the blanking rod to rotate; Receive a material sensing signal output by the material sensing unit indicating whether there is material in the transfer channel; in the case that there is no material in the transfer channel, control the second driving unit to stop running, or control both the first driving unit and the second driving unit to stop running; Control the conveyor belt to run along a preset conveying direction; Receive a first weight signal output by the first weighing unit indicating the weight of the conveyor belt; in the case that the weight of the conveyor belt gradually decreases, control the speed of the conveyor belt to decrease, or control the rotation speed of the second driving unit to increase; Receive a second weight signal output by each second weighing unit indicating the weight of the corresponding detection area; If the weight of one of the detection areas is less than a preset weight, control the replenishing bin corresponding to the detection area to replenish materials into the detection area; If the weight of one of the detection areas is greater than the preset weight, mark the detection area.

Images