Dry powder belt making device

Abstract

The utility model provides a dry powder belt making device. Comprising two dry powder belt making supports which are vertically fixed on an external machine table in parallel front and back at intervals, a powder distributor, and a first oil hot-pressing roller mechanism, a second oil hot-pressing roller mechanism, a third oil hot-pressing roller mechanism and a fourth oil hot-pressing roller mechanism which are horizontally fixed on the two dry powder belt making supports side by side in sequence from right to left, the fifth oil is a hot-pressing roller mechanism, a powder belt trimming mechanism and a powder belt tray; applying the mixed powder by a powder distributor; the second oil hot-pressing roller mechanism and the first oil hot-pressing roller mechanism are close to each other to form a first rolling channel; the third oil hot-pressing roller mechanism and the fourth oil hot-pressing roller mechanism are close to each other to form a second rolling channel; the fifth oil hot-pressing roller mechanism and the fourth oil hot-pressing roller mechanism are close to each other to form a third rolling channel; the first rolling channel, the second rolling channel and the third rolling channel can gradually roll the mixed powder into a powder belt; the powder belt trimming mechanism trims the powder belt; the powder belt tray protects the powder belt, and the dry powder belt making device can roll the mixed powder into the powder belt.

Description

TECHNICAL FIELD

[0001] The utility model belongs to lithium battery manufacturing equipment technical field especially relates to a dry powder band device. BACKGROUND

[0002] The anode of the lithium battery's electric core is the powder of the lithium amorphous carbon active substance coated on both sides of the current collector copper foil, and the cathode is the powder of the binary lithium iron phosphate or the powder of the ternary nickel manganese cobalt phosphate active substance coated on both sides of the current collector aluminum foil, and the electric core is an important component of the battery, which directly determines the electrochemical performance and safety of the battery.

[0003] In the prior art, the anode and the cathode can be prepared by a wet process or a dry process. The dry process is to mix the active material powder, the binder and the conductive agent powder together to form a mixed powder, roll the mixed powder into a powder tape, and then roll the powder tape and the current collector copper foil tape or the current collector aluminum foil tape (collectively referred to as foil tape) to form the electrode tape.

[0004] In the existing dry preparation, the binder needs to be fiberized under high shear force, so that the active material powder, the binder and the conductive agent powder are uniformly stirred to obtain a mixed powder, and then the mixed powder is placed in a shearing machine to fiberize the binder and bond the active material and the conductive agent powder to obtain a fiberized mixture. Then the fiberized mixture is extruded by an extruder to obtain an extruded fiberized mixture, and the extruded fiberized mixture is finally formed into a powder tape by rolling and thinning.

[0005] Therefore, we developed a dry powder band device for rolling the mixed powder into a powder tape.

[0006] Rolling requirements:

[0007] 1. The oil heating temperature is ≦80℃;

[0008] 2. The thickness of the powder tape meets the process requirements. INVENTION CONTENTS

[0009] The utility model aims at providing a dry powder band device for rolling the mixed powder into a powder tape.

[0010] The utility model is realized in this way, a dry powder band device, including two dry powder band supports, powder distribution device, first oil hot press roller mechanism, second oil hot press roller mechanism, third oil hot press roller mechanism, fourth oil hot press roller mechanism, fifth oil hot press roller mechanism, powder tape edge cutting mechanism and powder tape material tray;

[0011] Two dry powder belt making supports are vertically fixed on the external machine in parallel and spaced apart front and back; the powder distributor is fixed on the external machine for applying mixed powder; the first, second, third, fourth and fifth oil hot roller mechanisms are fixed horizontally on the two dry powder belt making supports side by side from right to left, the second oil hot roller mechanism and the first oil hot roller mechanism close to each other to form a first roller pressing channel, the third oil hot roller mechanism and the fourth oil hot roller mechanism close to each other to form a second roller pressing channel, and the fifth oil hot roller mechanism and the fourth oil hot roller mechanism close to each other to form a third roller pressing channel, the first, second and third roller pressing channels for gradually pressing the mixed powder into a powder belt; the powder belt edge cutting mechanism is fixed horizontally between the two dry powder belt making supports above the fifth oil hot roller mechanism for cutting the edges of the powder belt; and the powder belt tray is fixed horizontally between the two dry powder belt making supports below the fourth oil hot roller mechanism for protecting the powder belt.

[0012] Further, the powder distributor includes a powder cylinder, a powder inlet, a powder feeding driver, a powder feeding screw and a powder outlet; the powder cylinder is fixed on the external machine, the powder inlet is arranged on the upper side of the powder cylinder for injecting mixed powder, the powder feeding driver is fixed on the top of the powder cylinder, the powder feeding screw is fixed on the output end of the powder feeding driver inside the powder cylinder, and the powder outlet is arranged in the middle of the lower part of the powder cylinder; the powder feeding driver can drive the powder feeding screw to rotate, and the mixed powder injected through the powder inlet is sent downward through the powder outlet to the first roller pressing channel for roller pressing into a powder belt.

[0013] Further, the first oil hot roller mechanism includes an oil hot roller assembly and an oil hot roller driving assembly, the oil hot roller assembly is fixed horizontally between the two dry powder belt making supports, and the oil hot roller driving assembly is fixed on the front face of the front dry powder belt making support and connected to drive the oil hot roller assembly to rotate and press the mixed powder;

[0014] The oil hot roller driving assembly further includes an oil hot roller driving member support, an oil hot roller driving member, an oil hot roller driving gearbox and an oil hot roller driving driving wheel, the oil hot roller driving member support is fixed on the front face of the front dry powder belt making support, the oil hot roller driving gearbox is fixed on the front face of the oil hot roller driving member support, the oil hot roller driving member is fixed on the input end of the oil hot roller driving gearbox, and the oil hot roller driving driving wheel is fixed on the output end of the oil hot roller driving gearbox and connected to drive the oil hot roller assembly to rotate and press;

[0015] The second, third and fifth oil hot roller mechanisms are identical to the first oil hot roller mechanism, and the fourth oil hot roller mechanism does not include an oil hot roller driving assembly and is a driven mechanism.

[0016] Further, the oil hot pressing roller assembly comprises an oil hot pressing roller, two oil hot pressing roller bearing groups, a hot oil pipe, a hot oil dynamic sealing group and an oil hot pressing roller driven wheel, the oil hot pressing roller is provided with an oil hot pressing roller oil inlet channel in the roller body and a right-end closed oil hot pressing roller oil inlet channel and a left-end open oil hot pressing roller center oil outlet channel, the two oil hot pressing roller bearing groups are respectively sleeved on the left and right ends of the oil hot pressing roller to support the oil hot pressing roller on the dry powder belt support, the hot oil pipe is provided with a hot oil pipe inner oil inlet channel and a hot oil pipe oil return channel, the hot oil pipe extends into the oil hot pressing roller from the left end and is fixed on the external support, the hot oil pipe inner oil inlet channel enters and communicates with the oil hot pressing roller oil inlet channel to form an oil inlet channel for supplying oil to the oil hot pressing roller, and the hot oil pipe oil return channel is connected and communicated with the oil hot pressing roller center oil outlet channel to form an oil outlet channel for discharging oil from the oil hot pressing roller; the hot oil dynamic sealing group is fixed on the right end of the hot oil pipe and the left end of the oil hot pressing roller to provide dynamic sealing for the rear joint of the hot oil pipe and the oil hot pressing roller; the oil hot pressing roller driven wheel is fixed on the right end of the oil hot pressing roller and connected with the oil hot pressing roller driving driving wheel to drive the oil hot pressing roller to rotate; the hot oil pipe can supply hot oil to heat the oil hot pressing roller, and the oil hot pressing roller can rotate under the drive of the oil hot pressing roller driving member to press and mix the powder.

[0017] Further, the oil hot pressing roller comprises an oil hot pressing roller body, two oil hot pressing roller end covers, a roller neck surface sealing ring, a roller end surface sealing ring and an oil hot pressing roller center oil inlet channel sealing ring; the oil hot pressing roller body comprises a middle part with the largest diameter oil hot pressing roller surface, smaller diameter oil hot pressing roller neck surfaces located at both ends of the oil hot pressing roller surface, two oil hot pressing roller end surfaces where the oil hot pressing roller surface transitions to the oil hot pressing roller neck surface, smaller diameter oil hot pressing roller supporting surfaces extending left and right from the two oil hot pressing roller neck surfaces, an oil hot pressing roller groove on the left end surface and an oil hot pressing roller group sealing ring groove on the left end surface; the oil hot pressing roller end cover comprises an oil hot pressing roller end cover mounting end surface slightly smaller than the oil hot pressing roller end surface, an oil hot pressing roller end cover counterbore sunken from the center of the oil hot pressing roller end cover mounting end surface and an oil hot pressing roller end cover through hole passing right from the center of the oil hot pressing roller end cover counterbore and capable of sealingly cooperating with the oil hot pressing roller neck surface;

[0018] The two oil hot pressing roller end covers are respectively provided with the oil hot pressing roller end cover through hole outside the oil hot pressing roller neck surfaces at the left and right ends of the oil hot pressing roller body and are respectively fixed on the two oil hot pressing roller end surfaces at the left and right ends of the oil hot pressing roller body with the oil hot pressing roller end cover mounting end surface, the roller neck surface sealing ring is arranged between the oil hot pressing roller neck surface of the oil hot pressing roller body and the oil hot pressing roller end cover through hole of the corresponding oil hot pressing roller end cover, the roller end surface sealing ring is arranged between the oil hot pressing roller end surface of the oil hot pressing roller body and the oil hot pressing roller end cover mounting end surface of the corresponding oil hot pressing roller end cover, and the roller neck surface sealing ring and the roller end surface sealing ring are used for sealing the oil hot pressing roller oil inlet channel; the oil hot pressing roller center oil inlet channel sealing ring is fixed in a pre-set position in the oil hot pressing roller oil inlet channel to seal the front joint of the hot oil pipe and the oil hot pressing roller to separate the oil inlet channel and the oil outlet channel.

[0019] Further, the oil hot pressing roller body further comprises an oil hot pressing roller center oil inlet channel, a plurality of oil hot pressing roller radial oil inlet channels and a plurality of oil hot pressing roller axial oil inlet channels, the plurality of oil hot pressing roller radial oil inlet channels radially penetrating the oil hot pressing roller neck surface at both ends of the oil hot pressing roller body, the plurality of oil hot pressing roller axial oil inlet channels axially penetrating the oil hot pressing roller end surface at both ends of the oil hot pressing roller body, the oil hot pressing roller center oil inlet channel is located at the axial center of the oil hot pressing roller body, the right end of the oil hot pressing roller center oil inlet channel is closed and connected to the center end of the plurality of oil hot pressing roller radial oil inlet channels at the right end, the center line of the oil hot pressing roller center oil outlet channel is located on the center line of the oil hot pressing roller center oil inlet channel, the inner diameter of the oil hot pressing roller center oil outlet channel is larger than the inner diameter of the oil hot pressing roller center oil inlet channel, the right end of the oil hot pressing roller center oil outlet channel is connected to the left end of the oil hot pressing roller center oil inlet channel and the center end of the plurality of oil hot pressing roller radial oil inlet channels at the left end, and the left end of the oil hot pressing roller center oil outlet channel extends to the left end surface of the oil hot pressing roller body to form an opening.

[0020] A plurality of oil hot pressing roller center oil inlet channel sealing grooves are arranged on the channel wall at the position where the pre-set hot oil pipe of the oil hot pressing roller center oil inlet channel extends from the left end, and one oil hot pressing roller center oil inlet channel sealing ring is arranged in each of the plurality of oil hot pressing roller center oil inlet channel sealing grooves. The oil hot pressing roller center oil inlet channel, the plurality of oil hot pressing roller radial oil inlet channels, the plurality of oil hot pressing roller axial oil inlet channels and the two oil hot pressing roller end cover counterbores form a pre-set oil hot pressing roller oil inlet channel with consistent flow. The oil hot pressing roller center oil outlet channel and the oil hot pressing roller center oil inlet channel are provided for inserting the hot oil pipe.

[0021] Further, the oil hot pressing roller bearing set comprises a bearing seat, a bearing, two bearing oil seals, a bearing oil seal cover and a bearing oil seal cover lock nut. The inner ring of the bearing is arranged outside the oil hot pressing roller supporting surface of the oil hot pressing roller body, the two bearing oil seals are respectively arranged in the bearing seat and the bearing oil seal cover, the bearing seat is arranged outside the outer ring of the bearing together with one bearing oil seal, the bearing oil seal cover is arranged outside the corresponding oil hot pressing roller supporting surface of the oil hot pressing roller body together with the other bearing oil seal, and is fixed on the left end surface of the bearing seat on the left side of the oil hot pressing roller body or on the right end surface of the bearing seat on the right side of the oil hot pressing roller body. The bearing oil seal cover lock nut is connected with the threads on the corresponding oil hot pressing roller supporting surface of the oil hot pressing roller body to lock the bearing oil seal cover, so as to support the oil hot pressing roller body and the oil hot pressing roller frame on which the oil hot pressing roller body is arranged on the two oil hot pressing roller bearing sets. The two oil hot pressing roller bearing sets are used to support the oil hot pressing roller frame on the dry powder belt support.

[0022] Further, the hot oil pipe comprises a hot oil pipe outer oil inlet pipe, a hot oil pipe inner oil inlet pipe, a hot oil pipe inner oil inlet passage, a hot oil pipe rear oil return pipe, a hot oil pipe front oil return pipe, a hot oil pipe oil return passage and a hot oil pipe mounting flange; the hot oil pipe outer oil inlet pipe is connected and communicated with the hot oil pipe inner oil inlet pipe, the hot oil pipe outer oil inlet pipe and the hot oil pipe inner oil inlet pipe together form the hot oil pipe inner oil inlet passage, the hot oil pipe inner oil inlet passage has a smaller diameter than the oil hot roller central oil inlet passage to ensure that the oil inlet amount of the oil hot roller is close to the oil outlet amount of the hot oil pipe, the hot oil pipe rear oil return pipe is connected and communicated with the hot oil pipe front oil return pipe, the hot oil pipe rear oil return pipe and the hot oil pipe front oil return pipe together form the hot oil pipe oil return passage, the hot oil pipe oil return passage has the same diameter as the oil hot roller central oil outlet passage minus the outer diameter of the hot oil pipe inner oil inlet pipe and the same diameter as the hot oil pipe inner oil inlet passage, i.e. the diameter of the hot oil pipe oil return passage is the same as the diameter of the oil hot roller central oil outlet passage, to ensure that the oil outlet amount of the oil hot roller is consistent with the oil return amount of the hot oil pipe; the hot oil pipe mounting flange is arranged on the hot oil pipe front oil return pipe to fix the hot oil pipe to the external support, the front end of the hot oil pipe front oil return pipe is provided with a hot oil pipe front oil return pipe groove, the initial end of the hot oil pipe outer oil inlet pipe is provided with a hot oil pipe outer oil inlet pipe flange to connect the external oil supply pipeline, the terminal end of the hot oil pipe rear oil return pipe is provided with a hot oil pipe rear oil return pipe flange to connect the external oil return pipeline, the hot oil pipe inner oil inlet pipe penetrates through a plurality of oil hot roller central oil inlet passage sealing rings and extends into the oil hot roller central oil inlet passage of the oil hot roller, the right end of the hot oil pipe front oil return pipe extends into the oil hot roller group sealing ring groove of the oil hot roller body to form the rear joint part of the hot oil pipe and the oil hot roller;

[0023] The hot oil pipe inner oil inlet passage is communicated with the oil hot roller central oil inlet passage to form an oil inlet passage with the same flow rate for feeding hot oil to heat the oil hot roller, and the hot oil pipe oil return passage is also communicated with the oil hot roller central oil outlet passage to form an oil outlet passage with the same flow rate for discharging the heat loss oil from the oil hot roller.

[0024] Further, the hot oil dynamic sealing assembly comprises an assembly sealing ring, a roller cone ring, a roller cone flange, a pipe cone ring and a pipe cone flange; the assembly sealing ring is arranged in the oil hot press roller assembly sealing ring groove on the left end surface of the oil hot press roller body, the right end of the oil return pipe before the hot oil pipe is inserted into the oil hot press roller assembly sealing ring groove and adheres to the assembly sealing ring, the roller cone ring is provided with a roller cone ring outer taper surface, the roller cone flange is provided with a roller cone flange inner taper surface matched with the roller cone ring outer taper surface, the roller cone ring is fixed in the oil hot press roller groove on the left end of the oil hot press roller body with the roller cone ring outer taper surface facing right, the roller cone flange is sleeved on the roller cone ring outer taper surface of the roller cone ring with the roller cone flange inner taper surface facing left, the pipe cone ring is provided with a pipe cone ring outer taper surface, the pipe cone flange is provided with a pipe cone flange inner taper surface matched with the pipe cone ring outer taper surface, the pipe cone ring is fixed in the hot oil pipe groove on the right end of the oil return pipe before the hot oil pipe with the pipe cone ring outer taper surface facing left, and the pipe cone flange is sleeved on the pipe cone ring outer taper surface of the pipe cone ring with the pipe cone flange inner taper surface facing right; the roller cone flange and the pipe cone flange can be pulled towards each other by external structures, at this time, the assembly sealing ring dynamically seals the hot oil pipe and the rear joint of the oil hot press roller to prevent oil leakage in the oil outlet channel, and in the process of rotating the oil hot press roller to press and mix the powder material, the hot oil pipe fixed on the external support and not rotating with the oil hot press roller can supply hot oil to the oil hot press roller without oil leakage to heat the oil hot press roller.

[0025] The dry powder belt making device has the advantages that the powder distributor can distribute the mixed powder material, the second oil hot press roller mechanism and the first oil hot press roller mechanism are close to each other to form a first roller pressing channel, the third oil hot press roller mechanism and the fourth oil hot press roller mechanism are close to each other to form a second roller pressing channel, the fifth oil hot press roller mechanism and the fourth oil hot press roller mechanism are close to each other to form a third roller pressing channel, and the first roller pressing channel, the second roller pressing channel and the third roller pressing channel can gradually press the mixed powder material into a powder belt, the powder belt edge cutting mechanism can cut the edges of the powder belt, and the powder belt tray can protect the powder belt. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 Structure diagram of the dry powder belt making device;

[0027] Figure 2 Structure diagram of the powder distributor;

[0028] Figure 3 Structure diagram of the first oil hot press roller mechanism;

[0029] Figure 4 Structure diagram of the oil hot press roller assembly;

[0030] Figure 5 Structure diagram of the oil hot press roller;

[0031] Figure 6 Structure diagram of the oil hot press roller body;

[0032] Figure 7 Structure diagram of the hot oil pipe;

[0033] Figure 8 Cross-sectional view of hot oil pipe;

[0034] Figure 9 Cross-sectional view of the oil-heated roller assembly.

[0035] Explanation of reference numerals in the attached figures:

[0036] 200. Dry powder belt making device;

[0037] 210. Dry powder with support frame;

[0038] 220. Powder distributor; 221. Powder cylinder; 222. Powder inlet; 223. Powder delivery driver; 224. Powder delivery screw; 225. Powder outlet;

[0039] 230. First oil-heated pressure roller mechanism;

[0040] 231. Oil-heated pressure roller assembly

[0041] 2311. Oil-heated pressure roller;

[0042] 23111. Oil-heated pressure roller body;

[0043] 231111, Oil-heated roller face; 231112, Oil-heated roller end face; 231113, Oil-heated roller neck face; 231114, Oil-heated roller support surface; 231115, Oil-heated roller groove; 231116, Oil-heated roller assembly sealing ring groove; 231117, Oil-heated roller center oil inlet channel; 231118, Oil-heated roller radial oil inlet channel; 231119, Oil-heated roller axial oil inlet channel; 23111C, Oil-heated roller center oil inlet channel sealing groove;

[0044] 23112, Oil-heated roller end cap; 231121, Oil-heated roller end cap mounting face; 231122, Oil-heated roller end cap countersunk hole; 231123, Oil-heated roller end cap through hole;

[0045] 23113, Roll neck face sealing ring; 23114, Roll end face sealing ring; 23115, Oil inlet channel sealing ring for oil-heated roller center; 23111A, Oil inlet channel for oil-heated roller; 23111B, Oil outlet channel for oil-heated roller center;

[0046] 2312, Oil-heated roller bearing assembly; 23121, Bearing housing; 23122, Bearing; 23123, Bearing oil seal; 23124, Bearing oil seal cover; 23125, Bearing oil seal cover lock nut;

[0047] 2313, Hot oil pipe; 23131, External inlet pipe of hot oil pipe; 231311, External inlet pipe flange of hot oil pipe; 23132, Internal inlet pipe of hot oil pipe; 23133, Internal inlet channel of hot oil pipe; 23134, Rear return pipe of hot oil pipe; 231341, Rear return pipe flange of hot oil pipe; 23135, Front return pipe of hot oil pipe; 231351, Rear return pipe groove of hot oil pipe; 23136, Return channel of hot oil pipe; 23137, Mounting flange of hot oil pipe;

[0048] 2314. Hot oil dynamic seal assembly; 23141. Assembly seal ring; 23142. Roller cone ring; 231421. Outer conical surface of roller cone ring; 23143. Roller cone flange; 231431. Inner conical surface of roller cone flange; 23144. Pipe cone ring; 231441. Outer conical surface of pipe cone ring; 23145. Pipe cone flange; 231451. Inner conical surface of pipe cone flange.

[0049] 2315. Driven wheel of oil-heated pressure roller.

[0050] 232. Oil-heated roller drive assembly; 2321. Oil-heated roller drive component bracket; 2322. Oil-heated roller drive component; 2323. Oil-heated roller drive gearbox; 2324. Oil-heated roller drive drive wheel;

[0051] 240. Second oil-heated roller mechanism;

[0052] 250. Third oil-heated roller mechanism;

[0053] 260. Fourth oil-heated roller mechanism;

[0054] 270. Fifth oil-heated roller mechanism;

[0055] 280. Powder tape edge cutting mechanism;

[0056] 290. Powder conveyor belt tray;

[0057] 200A, First roller pressing channel; 200B, Second roller pressing channel; 200C, Third roller pressing channel. Detailed Implementation

[0058] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0059] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "front," "rear," "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; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "joined" should be interpreted broadly, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be a connection within two components. For those skilled in the art, the specific meaning of the terms in this utility model can be understood according to the specific circumstances.

[0060] This embodiment provides a dry powder belt forming device 200 for rolling mixed powder into powder belt.

[0061] See Figure 1 A dry powder belt making device 200 includes two dry powder belt making supports 210, a powder distributor 220, a first oil-heated roller mechanism 230, a second oil-heated roller mechanism 240, a third oil-heated roller mechanism 250, a fourth oil-heated roller mechanism 260, a fifth oil-heated roller mechanism 270, a powder belt trimming mechanism 280, and a powder belt tray 290;

[0062] Two dry powder conveyor belt supports 210 are vertically fixed to the external machine base, parallel to each other. A powder distributor 220 is fixed to the external machine base for dispensing mixed powder. A first oil-heated roller mechanism 230, a second oil-heated roller mechanism 240, a third oil-heated roller mechanism 250, a fourth oil-heated roller mechanism 260, and a fifth oil-heated roller mechanism 270 are horizontally fixed side-by-side from right to left on the two dry powder conveyor belt supports 210. The second oil-heated roller mechanism 240 and the first oil-heated roller mechanism 230 are close together to form the first roller pressing channel 200A. The third oil-heated roller mechanism 250 and the fourth oil-heated roller mechanism 260... The fifth oil-heated roller mechanism 270 and the fourth oil-heated roller mechanism 260 are located close to each other and form the third roller channel 200C. The first roller channel 200A, the second roller channel 200B and the third roller channel 200C are used to gradually roll the mixed powder into a powder belt. The powder belt trimming mechanism 280 is horizontally fixed between the two dry powder belt making supports 210 and located above the fifth oil-heated roller mechanism 270. It is used to trim the powder belt. The powder belt tray 290 is horizontally fixed between the two dry powder belt making supports 210 and located below the fourth oil-heated roller mechanism 260. It is used to protect the powder belt.

[0063] This dry powder belt forming device 200 can press mixed powder into powder belt by roller.

[0064] Further, see Figure 2 The powder distributor 220 includes a powder cylinder 221, a powder inlet 222, a powder delivery driver 223, a powder delivery screw 224, and a powder outlet 225. The powder cylinder 221 is fixed on an external machine base. The powder inlet 222 is located on the upper side of the powder cylinder 221 and is used to inject mixed powder. The powder delivery driver 223 is fixed on the top of the powder cylinder 221, and the powder delivery screw 224 is fixed below the output end of the powder delivery driver 223 and located inside the powder cylinder 221. The powder outlet 225 is located in the center of the lower part of the powder cylinder 221. The powder delivery driver 223 can drive the powder delivery screw 224 to rotate, and send the mixed powder injected by the powder inlet 222 down through the powder outlet 225 to the first roller pressing channel 200A for roller pressing into a powder belt.

[0065] Further, see Figure 3 The first oil-heated roller mechanism 230 includes an oil-heated roller assembly 231 and an oil-heated roller drive assembly 232. The oil-heated roller assembly 231 is horizontally fixed between two dry powder belt supports 210, and the oil-heated roller drive assembly 232 is fixed on the front of the front dry powder belt support 210 and connected to drive the oil-heated roller assembly 231 to rotate and press the mixed powder.

[0066] The oil-heated roller drive assembly 232 further includes an oil-heated roller drive bracket 2321, an oil-heated roller drive component 2322, an oil-heated roller drive gearbox 2323, and an oil-heated roller drive drive wheel 2324. The oil-heated roller drive bracket 2321 is fixed to the front of the front dry powder belt support 210. The oil-heated roller drive gearbox 2323 is fixed to the front of the oil-heated roller drive bracket 2321. The oil-heated roller drive component 2322 is fixed to the input end of the oil-heated roller drive gearbox 2323. The oil-heated roller drive drive wheel 2324 is fixed to the output end of the oil-heated roller drive gearbox 2323, and is connected to drive the oil-heated roller assembly 231 to rotate and roll.

[0067] The second oil-heated roller mechanism 240, the third oil-heated roller mechanism 250 and the fifth oil-heated roller mechanism 270 are exactly the same as the first oil-heated roller mechanism 230. The fourth oil-heated roller mechanism 260 does not include the oil-heated roller drive assembly 232 and is a driven mechanism.

[0068] Further, see Figure 4 The oil-heated roller assembly 231 includes an oil-heated roller 2311, two oil-heated roller bearing assemblies 2312, a hot oil pipe 2313, a hot oil dynamic seal assembly 2314, and an oil-heated roller driven wheel 2315; see also Figure 5The oil-heated roller 2311 is provided with an oil-heated roller inlet channel 23111A located inside the roller body and closed at the right end, and an oil-heated roller center outlet channel 23111B open at the left end; see also Figure 4 Two oil-heated roller bearing assemblies 2312 are respectively fitted onto the left and right ends of the oil-heated roller 2311 to support the oil-heated roller 2311 on the dry powder conveyor belt support 210. See [reference needed]. Figure 8 The hot oil pipe 2313 is provided with an oil inlet channel 23133 and an oil return channel 23136; see also Figure 4 , Figure 9 The hot oil pipe 2313 extends into the oil-heated roller 2311 from the left end and is fixed to the external support. The oil inlet channel 23133 inside the hot oil pipe enters and connects to the oil inlet channel 23111A of the oil-heated roller 2311, forming an oil inlet channel for supplying oil to the oil-heated roller 2311. The hot oil return channel 23136 connects to and connects to the center oil outlet channel 23111B of the oil-heated roller, forming an oil outlet channel for discharging oil from the oil-heated roller 2311. The hot oil dynamic seal assembly 2314 is fixed to the right end of the hot oil pipe 2313 and the left end of the oil-heated roller 2311 for supplying oil to the hot oil pipe 2313. A dynamic seal is provided at the rear joint of the oil-heated roller 2311; the driven wheel 2315 of the oil-heated roller is fixed at the right end of the oil-heated roller 2311 and connected to the driving wheel 2324 of the oil-heated roller, so as to transmit the power of the driving component 2322 of the oil-heated roller to drive the oil-heated roller 2311 to rotate; the hot oil pipe 2313 can supply hot oil to heat the oil-heated roller 2311, and the oil-heated roller 2311 can rotate and press the material under the drive of the driving component 2322. In this embodiment, the driven wheel 2315 of the oil-heated roller and the driving wheel 2324 of the oil-heated roller are gears meshed together.

[0069] Further, see Figure 5 The oil-heated roller 2311 includes an oil-heated roller body 23111, two oil-heated roller end caps 23112, a roller neck face sealing ring 23113, a roller end face sealing ring 23114, and an oil inlet channel sealing ring 23115 at the center of the oil-heated roller; see also Figure 6The oil-heated roller body 23111 includes the oil-heated roller surface 231111 with the largest diameter in the middle, oil-heated roller neck surfaces 231113 with smaller diameters located at both ends of the oil-heated roller surface 231111, two oil-heated roller end surfaces 231112 where the oil-heated roller surface 231111 transitions to the oil-heated roller neck surfaces 231113, oil-heated roller support surfaces 231114 with smaller diameters extending to the left and right from the two oil-heated roller neck surfaces 231113, and an oil-heated roller groove 23 located on the left end shaft surface. 1115 and the sealing ring groove 231116 of the oil-heated roller assembly located on the left end face; the oil-heated roller end cover 23112 includes an oil-heated roller end cover mounting end face 231121 that is slightly smaller than the oil-heated roller end face 231112, an oil-heated roller end cover countersunk hole 231122 that is recessed from the center of the oil-heated roller end cover mounting end face 231121, and an oil-heated roller end cover through hole 231123 that extends to the right from the center of the oil-heated roller end cover countersunk hole 231122 and can seal with the oil-heated roller neck face 231113;

[0070] Two oil-heated roller end caps 23112 are respectively inserted through oil-heated roller end cap through holes 231123 into the oil-heated roller neck faces 231113 at the left and right ends of the oil-heated roller body 23111, and are respectively fixed to the two oil-heated roller end faces 231121 at the left and right ends of the oil-heated roller body 23111. A roller neck sealing ring 23113 is located between the oil-heated roller neck face 231113 of the oil-heated roller body 23111 and the corresponding oil-heated roller end cap through hole 231123 of the oil-heated roller end cap 23112. A face sealing ring 23114 is disposed between the oil-heated roller end face 231112 of the oil-heated roller body 23111 and the oil-heated roller end cover mounting end face 231121 of the corresponding oil-heated roller end cover 23112. The roller neck face sealing ring 23113 and the roller end face sealing ring 23114 are used to seal the oil-heated roller oil inlet channel 23111A. The oil-heated roller center oil inlet channel sealing ring 23115 is fixed in a preset position in the oil-heated roller oil inlet channel 23111A to seal the front joint of the hot oil pipe 2313 and the oil-heated roller 2311 to separate the oil inlet channel and the oil outlet channel.

[0071] Furthermore, see Figure 5 , Figure 6The oil-heated roller body 23111 also includes a central oil inlet channel 231117, multiple radial oil inlet channels 231118, and multiple axial oil inlet channels 231119. The multiple radial oil inlet channels 231118 radially penetrate the oil-heated roller neck faces 231113 at both ends of the oil-heated roller body 231111, and the multiple axial oil inlet channels 231119 axially penetrate the oil-heated roller end faces 231112 at both ends of the oil-heated roller body 231111. The central oil inlet channel 231117 is located at the axial center of the oil-heated roller body 231111, and the right end of the central oil inlet channel 231117 is closed and connected. The center end of the radial oil inlet channel 231118 of the oil-heated roller is connected to the center end of the multiple oil-heated roller radial oil inlet channel 231118. The center line of the oil-heated roller center oil outlet channel 23111B is located on the center line of the oil-heated roller center oil inlet channel 231117. The inner diameter of the oil-heated roller center oil outlet channel 23111B is larger than the inner diameter of the oil-heated roller center oil inlet channel 231117. The right end of the oil-heated roller center oil outlet channel 23111B connects to the left end of the oil-heated roller center oil inlet channel 231117 and the center end of the multiple oil-heated roller radial oil inlet channels 231118 that connect to the left end. The left end of the oil-heated roller center oil outlet channel 23111B extends to the left end face of the oil-heated roller body 23111 to form an opening.

[0072] See Figure 6 Multiple sealing grooves 23111C for the oil inlet channel 231117 of the oil-heated roller are provided on the channel wall at the position where the hot oil pipe 2313 extends from the left end. See [reference needed]. Figure 5 , Figure 9 Each of the multiple oil-heated roller center oil inlet channel sealing grooves 23111C is provided with an oil-heated roller center oil inlet channel sealing ring 23115. The oil-heated roller center oil inlet channel 231117 is located at the right end of the multiple oil-heated roller center oil inlet channel sealing rings 23115. Multiple oil-heated roller radial oil inlet channels 231118, multiple oil-heated roller axial oil inlet channels 231119 and two oil-heated roller end cap countersunk holes 231122 form the preset oil-heated roller oil inlet channel 23111A of oil-heated roller 2311 with consistent flow rate. The oil-heated roller center oil outlet channel 23111B and the oil-heated roller center oil inlet channel 231117 are used for inserting hot oil pipes 2313.

[0073] Furthermore, see Figure 9The oil-heated roller bearing assembly 2312 includes a bearing housing 23121, a bearing 23122, two bearing oil seals 23123, a bearing oil seal cover 23124, and a bearing oil seal cover lock nut 23125. The inner ring of the bearing 23122 passes through the oil-heated roller support surface 231114 of the oil-heated roller body 23111. The two bearing oil seals 23123 are respectively sleeved in the bearing housing 23121 and the bearing oil seal cover 23124. The bearing housing 23121, together with one bearing oil seal 23123, is sleeved outside the outer ring of the bearing 23122. The bearing oil seal cover 23124, together with the other bearing oil seal 23123, passes through the corresponding bearing oil seal nut 23125 of the oil-heated roller body 23111. The bearing oil seal cap 23124 is fixed to the left end face of the bearing seat 23121 on the left side of the oil-heated roller body 23111 or to the right end face of the bearing seat 23121 on the right side of the oil-heated roller body 23111. The bearing oil seal cap 23125 is threadedly connected to the corresponding oil-heated roller support surface 231114 of the oil-heated roller body 23111 to lock the bearing oil seal cap 23124, thereby mounting the oil-heated roller body 23111 and the oil-heated roller 2311 on two oil-heated roller bearing assemblies 2312. The two oil-heated roller bearing assemblies 2312 are used to mount the oil-heated roller 2311 on the dry powder belt support 210.

[0074] Furthermore, see Figure 7 , Figure 8The hot oil pipe 2313 includes an external hot oil inlet pipe 23131, an internal hot oil inlet pipe 23132, an internal hot oil inlet channel 23133, a rear hot oil return pipe 23134, a front hot oil return pipe 23135, a return channel 23136, and a mounting flange 23137. The external hot oil inlet pipe 23131 is connected to and communicates with the internal hot oil inlet pipe 23132, and the external hot oil inlet pipe 23131 is connected to the internal hot oil inlet pipe 23132. 132 is provided with an oil inlet channel 23133 inside the hot oil pipe. The diameter of the oil inlet channel 23133 inside the hot oil pipe is slightly smaller than the diameter of the center oil inlet channel 231117 of the oil-heated roller to ensure that the oil inlet volume of the oil-heated roller 2311 is close to the oil outlet volume of the hot oil pipe 2313. The rear return oil pipe 23134 of the hot oil pipe is connected and communicates with the front return oil pipe 23135 of the hot oil pipe. The rear return oil pipe 23134 of the hot oil pipe and the front return oil pipe 23135 of the hot oil pipe are provided with a hot oil pipe return channel. 23136, the diameter of the hot oil return channel 23136 is the same as the diameter of the hot oil roller center oil outlet channel 23111B minus the outer diameter of the hot oil inlet pipe 23132, and also the same as the diameter of the hot oil inlet channel 23133. That is, the diameter of the hot oil return channel 23136 is the same as the diameter of the hot oil roller center oil outlet channel 23111B, to ensure that the oil output of the hot oil roller 2311 is consistent with the oil return output of the hot oil pipe 2313; Hot oil pipe installation method. Lan 23137 is installed on the front return pipe 23135 of the hot oil pipe to fix the hot oil pipe 2313 to the external support. The front end of the front return pipe 23135 has a front return pipe groove 231351. The beginning of the external inlet pipe 23131 has an external inlet pipe flange 231311 for connecting to the external oil supply line. The end of the rear return pipe 23134 has a rear return pipe flange 231341 for connecting to the external return line. See [reference needed] Figure 9 The hot oil pipe 23132 passes through the sealing rings 23115 of the central oil inlet channel of the multiple hot oil rollers and extends into the central oil inlet channel 231117 of the hot oil roller 2311. The right end of the hot oil pipe front return pipe 23135 extends into the sealing ring groove 231116 of the hot oil roller body 23111, becoming the rear joint of the hot oil pipe 2313 and the hot oil roller 2311.

[0075] See Figure 8 , Figure 9 The hot oil pipe inlet channel 23133 is connected to the hot oil roller center inlet channel 231117, and thus connected to the hot oil roller inlet channel 23111A where the hot oil roller center inlet channel 231117 is located, forming an inlet channel with consistent flow to send hot oil in to heat the hot oil roller 2311. The hot oil pipe return channel 23136 is also connected to the hot oil roller center outlet channel 23111B, forming an outlet channel with consistent flow to send the deheated oil out of the hot oil roller 2311.

[0076] Furthermore, see Figure 9 The hot oil dynamic sealing assembly 2314 includes an assembly sealing ring 23141, a roller cone ring 23142, a roller cone flange 23143, a pipe cone ring 23144, and a pipe cone flange 23145. The assembly sealing ring 23141 is located in the hot oil roller assembly sealing ring groove 231116 on the left end face of the hot oil roller body 23111. The right end of the hot oil return pipe 23135 extends into the hot oil roller assembly sealing ring groove 231116 and adheres to the assembly sealing ring 23141. The roller cone ring 23142... The roller cone ring 231421 has an outer conical surface 231421, and the roller cone flange 23143 has an inner conical surface 231431 that matches the outer conical surface 231421 of the roller cone ring. The roller cone ring 23142 is fixed to the oil-heated roller groove 231115 at the left end of the oil-heated roller body 23111 with the outer conical surface 231421 of the roller cone ring facing to the right. The roller cone flange 23143 is sleeved on the outer conical surface 231421 of the roller cone ring 23142 with the inner conical surface 231431 of the roller cone flange facing to the left. 23144 is provided with an outer conical surface 231441 of the pipe conical ring, and a pipe conical flange 23145 is provided with an inner conical surface 231451 of the pipe conical flange that matches the outer conical surface 231441 of the pipe conical ring. The pipe conical ring 23144 is fixed to the right end of the hot oil pipe front return pipe groove 231351 on the right end of the hot oil pipe front return pipe 23135 with the outer conical surface 231441 of the pipe conical ring facing left. The pipe conical flange 23145 is fitted onto the outer conical surface 231451 of the pipe conical ring 231444 with the inner conical surface 231451 of the pipe conical flange facing right. On 31441; the roller tapered flange 23143 and the pipe tapered flange 23145 can be pulled together by an external structure. At this time, the joint sealing ring 23141 dynamically seals the rear joint of the hot oil pipe 2313 and the oil-heated roller 2311 to prevent oil leakage from the oil outlet channel. During the process of the oil-heated roller 2311 rotating to press the material, the hot oil pipe 2313, which is fixed on the external support and does not rotate with the oil-heated roller 2311, can supply hot oil to the oil-heated roller 2311 without oil leakage to heat the oil-heated roller 2311.

[0077] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A dry powder tape making device (200) for rolling mixed powder into powder tape, comprising two dry powder tape supports (210), a powder distributor (220), a first oil hot roller mechanism (230), a second oil hot roller mechanism (240), a third oil hot roller mechanism (250), a fourth oil hot roller mechanism (260), a fifth oil hot roller mechanism (270), a powder tape trimming mechanism (280) and a powder tape tray (290); The two dry powder tape supports (210) are respectively vertically fixed on the external machine in parallel and spaced apart front and back; the powder distributor (220) is fixed on the external machine for applying mixed powder; the first oil hot roller mechanism (230), the second oil hot roller mechanism (240), the third oil hot roller mechanism (250), the fourth oil hot roller mechanism (260) and the fifth oil hot roller mechanism (270) are fixed horizontally side by side on the two dry powder tape supports (210) from right to left in sequence, the second oil hot roller mechanism (240) and the first oil hot roller mechanism (230) constitute a first roller pressing channel (200A) close to each other, the third oil hot roller mechanism (250) and the fourth oil hot roller mechanism (260) constitute a second roller pressing channel (200B) close to each other, and the fifth oil hot roller mechanism (270) and the fourth oil hot roller mechanism (260) constitute a third roller pressing channel (200C) close to each other, the first roller pressing channel (200A), the second roller pressing channel (200B) and the third roller pressing channel (200C) are used for gradually rolling the mixed powder into powder tape; the powder tape trimming mechanism (280) is horizontally fixed between the two dry powder tape supports (210) above the fifth oil hot roller mechanism (270) for trimming the powder tape; the powder tape tray (290) is horizontally fixed between the two dry powder tape supports (210) below the fourth oil hot roller mechanism (260) for protecting the powder tape.

2. The dry powder tape making device (200) according to claim 1, wherein the powder distributor (220) comprises a powder cylinder (221), a powder inlet (222), a powder feeding driver (223), a powder feeding screw (224) and a powder outlet (225); the powder cylinder (221) is fixed on the external machine, the powder inlet (222) is arranged on the upper side of the powder cylinder (221) for injecting mixed powder; the powder feeding driver (223) is fixed on the top of the powder cylinder (221), the powder feeding screw (224) is fixed on the output end of the powder feeding driver (223) below and located in the powder cylinder (221); the powder outlet (225) is arranged in the lower middle of the powder cylinder (221), the powder feeding driver (223) can drive the powder feeding screw (224) to rotate, and the mixed powder injected by the powder inlet (222) is sent downward through the powder outlet (225) and applied to the first roller pressing channel (200A) for rolling into powder tape.

3. The dry powder banding device (200) according to claim 1, wherein the first oil hot roller mechanism (230) comprises an oil hot roller assembly (231) and an oil hot roller drive assembly (232), the oil hot roller assembly (231) is horizontally fixed between the two dry powder banding supports (210), and the oil hot roller drive assembly (232) is fixed on the front face of the front dry powder banding support (210) and connected to drive the oil hot roller assembly (231) to rotate and roll the mixed powder; the oil hot roller drive assembly (232) further comprises an oil hot roller drive support (2321), an oil hot roller drive (2322), an oil hot roller drive gearbox (2323) and an oil hot roller drive driving wheel (2324), the oil hot roller drive support (2321) is fixed on the front face of the front dry powder banding support (210), the oil hot roller drive gearbox (2323) is fixed on the front face of the oil hot roller drive support (2321), the oil hot roller drive (2322) is fixed on the input end of the oil hot roller drive gearbox (2323), and the oil hot roller drive driving wheel (2324) is fixed on the output end of the oil hot roller drive gearbox (2323) and connected to drive the oil hot roller assembly (231) to rotate and roll; the second oil hot roller mechanism (240), the third oil hot roller mechanism (250) and the fifth oil hot roller mechanism (270) are completely the same as the first oil hot roller mechanism (230), and the fourth oil hot roller mechanism (260) does not comprise the oil hot roller drive assembly (232) and is a driven mechanism.

4. The dry powder banding device (200) according to claim 3, wherein the oil hot roller assembly (231) comprises an oil hot roller (2311), two oil hot roller bearing sets (2312), a hot oil pipe (2313), a hot oil dynamic sealing set (2314) and an oil hot roller driven wheel (2315), the oil hot roller (2311) is provided with an oil hot roller oil inlet channel (23111A) in the roller body and closed at the right end, and an oil hot roller center oil outlet channel (23111B) open at the left end, the two oil hot roller bearing sets (2312) are respectively sleeved on the left and right ends of the oil hot roller (2311) for supporting the oil hot roller (2311) on the dry powder banding support (210), the hot oil pipe (2313) is provided with a hot oil pipe oil inlet channel (23133) and a hot oil pipe oil return channel (23136), the hot oil pipe (2313) extends into the oil hot roller (2311) from the left end and is fixed on an external support, the hot oil pipe oil inlet channel (23133) enters and communicates with the oil hot roller oil inlet channel (23111A) of the oil hot roller (2311) to form an oil inlet channel for supplying oil to the oil hot roller (2311); the hot oil pipe oil return channel (23136) is connected and communicated with the oil hot roller center oil outlet channel (23111B) to form an oil outlet channel for discharging oil from the oil hot roller (2311); the hot oil dynamic sealing set (2314) is fixed on the right end of the hot oil pipe (2313) and the left end of the oil hot roller (2311) to provide dynamic sealing for the joint part of the hot oil pipe (2313) and the oil hot roller (2311); the oil hot roller driven wheel (2315) is fixed on the right end of the oil hot roller (2311) and connected with the oil hot roller driving driving wheel (2324) to transmit the power of the oil hot roller driving member (2322) to drive the oil hot roller (2311) to rotate; the hot oil pipe (2313) can supply hot oil to heat the oil hot roller (2311), and the oil hot roller (2311) can rotate under the drive of the oil hot roller driving member (2322) to hot roll and mix the powder.

5. The dry powder banding device (200) according to claim 4, wherein the oil hot press roller (2311) comprises an oil hot press roller body (23111), two oil hot press roller end covers (23112), a roller neck face sealing ring (23113), a roller end face sealing ring (23114) and an oil hot press roller center oil inlet passage sealing ring (23115); the oil hot press roller body (23111) comprises a middle part largest diameter oil hot press roller roller face (231111), two smaller diameter oil hot press roller neck faces (231113) located at both ends of the oil hot press roller roller face (231111), two oil hot press roller end faces (231112) where the oil hot press roller roller face (231111) transitions to the oil hot press roller neck face (231113), two smaller diameter oil hot press roller support faces (231114) extending left and right from the oil hot press roller neck face (231113), an oil hot press roller groove (231115) located on the left end shaft face and an oil hot press roller set sealing ring groove (231116) located on the left end face; the oil hot press roller end cover (23112) comprises an oil hot press roller end cover mounting end face (231121) slightly smaller than the oil hot press roller end face (231112), an oil hot press roller end cover counterbore (231122) sunken from the center of the oil hot press roller end cover mounting end face (231121) and an oil hot press roller end cover through hole (231123) passing right from the center of the oil hot press roller end cover counterbore (231122) capable of sealingly cooperating with the oil hot press roller neck face (231113); the two oil hot press roller end covers (23112) are respectively provided with the oil hot press roller end cover through hole (231123) penetrating out of the oil hot press roller neck face (231113) at both left and right ends of the oil hot press roller body (23111) and are respectively fixed on the two oil hot press roller end faces (231112) at both left and right ends of the oil hot press roller body (23111) by the oil hot press roller end cover mounting end face (231121); the roller neck face sealing ring (23113) is arranged between the oil hot press roller neck face (231113) of the oil hot press roller body (23111) and the oil hot press roller end cover through hole (231123) of the corresponding oil hot press roller end cover (23112); the roller end face sealing ring (23114) is arranged between the oil hot press roller end face (231112) of the oil hot press roller body (23111) and the oil hot press roller end cover mounting end face (231121) of the corresponding oil hot press roller end cover (23112); the roller neck face sealing ring (23113) and the roller end face sealing ring (23114) are used for sealing the oil hot press roller oil inlet passage (23111A); the oil hot press roller center oil inlet passage sealing ring (23115) is fixed at a pre-set position in the oil hot press roller oil inlet passage (23111A) for sealing the front joint part of the hot oil pipe (2313) and the oil hot press roller (2311) to separate the oil inlet passage and the oil outlet passage.

6. The dry powder ribboning device (200) according to claim 5, wherein the oil hot roller body (23111) further comprises an oil hot roller center oil inlet channel (231117), a plurality of oil hot roller radial oil inlet channels (231118) and a plurality of oil hot roller axial oil inlet channels (231119), the plurality of oil hot roller radial oil inlet channels (231118) radially penetrating the oil hot roller neck surface (231113) at both ends of the oil hot roller body (23111), the plurality of oil hot roller axial oil inlet channels (231119) axially penetrating the oil hot roller end surface (231112) at both ends of the oil hot roller body (23111), the oil hot roller center oil inlet channel (231117) is located at the axial center of the oil hot roller body (23111), the right end of the oil hot roller center oil inlet channel (231117) is closed and communicates with the center end of the plurality of oil hot roller radial oil inlet channels (231118) at the right end, the center line of the oil hot roller center oil outlet channel (23111B) is located on the center line of the oil hot roller center oil inlet channel (231117), the inner diameter of the oil hot roller center oil outlet channel (23111B) is greater than that of the oil hot roller center oil inlet channel (231117), the right end of the oil hot roller center oil outlet channel (23111B) is connected to the left end of the oil hot roller center oil inlet channel (231117) and the center end of the plurality of oil hot roller radial oil inlet channels (231118) at the left end, and the left end of the oil hot roller center oil outlet channel (23111B) extends to the left end surface of the oil hot roller body (23111) to form an opening. A plurality of oil hot roller center oil inlet channel sealing grooves (23111C) are arranged on the channel wall of the position where the oil hot roller center oil inlet channel (231117) is located and the hot oil pipe (2313) extends from the left end, and one oil hot roller center oil inlet channel sealing ring (23115) is arranged in each oil hot roller center oil inlet channel sealing groove (23111C), the oil hot roller center oil inlet channel (231117) is located at the end part of the right end of the plurality of oil hot roller center oil inlet channel sealing rings (23115), the plurality of oil hot roller radial oil inlet channels (231118), the plurality of oil hot roller axial oil inlet channels (231119) and the two oil hot roller end cover counterbores (231122) form the oil hot roller oil inlet channel (23111A) of the oil hot roller (2311) with a preset uniform flow, and the oil hot roller center oil outlet channel (23111B) and the oil hot roller center oil inlet channel (231117) are provided for inserting the hot oil pipe (2313).

7. The dry powder banding device (200) according to claim 5, wherein the oil hot press roller bearing set (2312) comprises a bearing seat (23121), a bearing (23122), two bearing oil seals (23123), a bearing oil seal cover (23124) and a bearing oil seal cover lock nut (23125), the inner ring of the bearing (23122) is arranged outside the oil hot press roller supporting surface (231114) of the oil hot press roller body (23111), the two bearing oil seals (23123) are respectively sleeved in the bearing seat (23121) and the bearing oil seal cover (23124), the bearing seat (23121) is sleeved outside the outer ring of the bearing (23122) together with one of the bearing oil seals (23123), the bearing oil seal cover (23124) is arranged outside the corresponding oil hot press roller supporting surface (231114) of the oil hot press roller body (23111) together with the other bearing oil seal (23123), and is fixed on the left end surface of the bearing seat (23121) left of the oil hot press roller body (23111) or on the right end surface of the bearing seat (23121) right of the oil hot press roller body (23111), the bearing oil seal cover lock nut (23125) is connected with the threads on the corresponding oil hot press roller supporting surface (231114) of the oil hot press roller body (23111) to lock the bearing oil seal cover (23124) so as to erect the oil hot press roller body (23111) and the oil hot press roller (2311) where the oil hot press roller body (23111) is arranged on the two oil hot press roller bearing sets (2312), and the two oil hot press roller bearing sets (2312) are used to erect the oil hot press roller (2311) on the dry powder banding support (210).

8. The dry powder banding device (200) according to claim 6, wherein the hot oil pipe (2313) comprises a hot oil pipe outer oil inlet pipe (23131), a hot oil pipe inner oil inlet pipe (23132), a hot oil pipe inner oil inlet passage (23133), a hot oil pipe rear oil return pipe (23134), a hot oil pipe front oil return pipe (23135), a hot oil pipe oil return passage (23136), and a hot oil pipe mounting flange (23137); the hot oil pipe outer oil inlet pipe (23131) is connected and communicated with the hot oil pipe inner oil inlet pipe (23132), and the hot oil pipe outer oil inlet pipe (23131) and the hot oil pipe inner oil inlet pipe (23132) are provided with the hot oil pipe inner oil inlet passage (23133) together, the hot oil pipe inner oil inlet passage (23133) has a smaller diameter than the oil hot press roller center oil inlet passage (231117) to ensure that the oil inlet amount of the oil hot press roller (2311) is close to the oil outlet amount of the hot oil pipe (2313); the hot oil pipe rear oil return pipe (23134) is connected and communicated with the hot oil pipe front oil return pipe (23135), and the hot oil pipe rear oil return pipe (23134) and the hot oil pipe front oil return pipe (23135) are provided with the hot oil pipe oil return passage (23136) together, the hot oil pipe oil return passage (23136) has a diameter consistent with the diameter of the oil hot press roller center oil outlet passage (23111B) minus the outer diameter of the hot oil pipe inner oil inlet pipe (23132) and consistent with the diameter of the hot oil pipe inner oil inlet passage (23133), i.e. the diameter of the hot oil pipe oil return passage (23136) is consistent with the diameter of the oil hot press roller center oil outlet passage (23111B), to ensure that the oil outlet amount of the oil hot press roller (2311) is consistent with the oil return amount of the hot oil pipe (2313); the hot oil pipe mounting flange (23137) is arranged on the hot oil pipe front oil return pipe (23135) to fix the hot oil pipe (2313) to an external support, the front end of the hot oil pipe front oil return pipe (23135) is provided with a hot oil pipe front oil return pipe groove (231351), the initial end of the hot oil pipe outer oil inlet pipe (23131) is provided with a hot oil pipe outer oil inlet pipe flange (231311) to connect an external oil supply pipeline, the terminal end of the hot oil pipe rear oil return pipe (23134) is provided with a hot oil pipe rear oil return pipe flange (231341) to connect an external oil return pipeline, the hot oil pipe inner oil inlet pipe (23132) penetrates through a plurality of oil hot press roller center oil inlet passage sealing rings (23115) to extend into the oil hot press roller center oil inlet passage (231117) of the oil hot press roller (2311), and the right end of the hot oil pipe front oil return pipe (23135) extends into the oil hot press roller joint sealing ring groove (231116) of the oil hot press roller body (23111) to form the rear joint part of the hot oil pipe (2313) and the oil hot press roller (2311). The hot oil pipe in-oil passage (23133) is communicated with the oil hot press roller center in-oil passage (231117) to be communicated with the oil hot press roller in-oil passage (23111A) where the oil hot press roller center in-oil passage (231117) is located, and constitutes the in-oil passage with consistent flow to send hot oil in to heat the oil hot press roller (2311). The hot oil pipe back-oil passage (23136) is also communicated with the oil hot press roller center out-oil passage (23111B) to constitute the out-oil passage with consistent flow to send the heat lost oil out of the oil hot press roller (2311).

9. The dry powder banding device (200) according to claim 8, wherein the hot oil dynamic sealing set (2314) comprises a set sealing ring (23141), a roller taper ring (23142), a roller taper flange (23143), a pipe taper ring (23144) and a pipe taper flange (23145); the set sealing ring (23141) is arranged in the oil hot press roller set sealing ring groove (231116) on the left end surface of the oil hot press roller body (23111), the right end of the hot oil pipe front oil return pipe (23135) is inserted into the oil hot press roller set sealing ring groove (231116) and adheres to the set sealing ring (23141), the roller taper ring (23142) is provided with a roller taper ring outer taper surface (231421), the roller taper flange (23143) is provided with a roller taper flange inner taper surface (231431) matched with the roller taper ring outer taper surface (231421), the roller taper ring (23142) is fixed in the oil hot press roller groove (231115) on the left end of the oil hot press roller body (23111) with the roller taper ring outer taper surface (231421) facing right, the roller taper flange (23143) is sleeved on the roller taper ring outer taper surface (231421) of the roller taper ring (23142) with the roller taper flange inner taper surface (231431) facing left, the pipe taper ring (23144) is provided with a pipe taper ring outer taper surface (231441), the pipe taper flange (23145) is provided with a pipe taper flange inner taper surface (231451) matched with the pipe taper ring outer taper surface (231441), the pipe taper ring (23144) is fixed in the hot oil pipe front oil return pipe groove (231351) on the right end of the hot oil pipe front oil return pipe (23135) with the pipe taper ring outer taper surface (231441) facing left, and the pipe taper flange (23145) is sleeved on the pipe taper ring outer taper surface (231441) of the pipe taper ring (23144) with the pipe taper flange inner taper surface (231451) facing right; the roller taper flange (23143) and the pipe taper flange (23145) can be pulled towards each other by external structures, at this time the set sealing ring (23141) dynamically seals the rear joint part of the hot oil pipe (2313) and the oil hot press roller (2311) to prevent oil leakage of the oil outlet channel, and in the process of rotating the hot roller to mix powder, the hot oil pipe (2313) fixed on the external support and not rotating with the oil hot press roller (2311) can supply hot oil to the oil hot press roller (2311) without oil leakage to heat the oil hot press roller (2311).

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