A method for producing a blister insulation cover
Through mechanized production processes and automatic detection technology, the problem of low manual handling and inspection efficiency in the production of traditional blister insulating covers is solved, and efficient automated production and quality stability are achieved.
Patent Information
- Application Number
- CN202510067833.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-16
- Publication Date
- 2025-04-08
AI Technical Summary
The traditional blister insulating cover production methods have problems with low manual handling and detection efficiency, resulting in long production cycles and unstable quality.
The machined production process is adopted, including blister, punching machine, dust collector and automatic detection machine, automatic handling and detection are achieved through conveyor belts and robots, and the machine vision detection device is used to automatically detect appearance defects and print labels.
It realizes efficient and automated handling of insulating cover production materials, improves dust removal efficiency and quality stability, and automatic detection and screening reduces the outflow of defective products and improves overall production efficiency.
Smart Images
Figure CN119773211A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of insulating cover processing, and in particular to a production method of a blister insulating cover. Background Art
[0002] The application of CCS blister insulation cover is mainly concentrated in the field of lithium battery modules and energy storage. CCS, also known as "integrated busbar" or "wiring board integration", is a new type of connection bar used in lithium battery modules. It is an integrated component composed of multiple systems such as metal electrical connection system, signal sampling system and insulation system. CCS blister insulation cover is usually used as part of the insulation system to isolate and protect the electrical connection part in the battery module to prevent safety problems such as short circuit and electric shock.
[0003] In lithium battery modules, CCS blister insulation covers are widely used in commercial vehicles, passenger cars and other fields. They can effectively isolate the positive and negative electrodes and signal lines in the battery module to prevent short circuit accidents caused by contact with metal parts or intrusion of external objects.
[0004] The traditional production method of blister insulation cover is as follows: S1, blister process: the staff manually puts the sheet insulation cover raw material in the blister operation area, and then uses the heating device to heat the sheet insulation cover raw material, and the sheet insulation cover raw material reaches a softened state after heating; the molding device adsorbs the softened sheet insulation cover raw material, and the sheet insulation cover raw material is adsorbed on the surface of the molding device to form the required shape; then, it is hardened and shaped by cooling or natural cooling to obtain the semi-finished insulation cover; S2, punching process: the semi-finished insulation cover is manually transported to the punching device by the staff, and the punching device punches out the specified shape and internal circular hole shape to obtain the finished insulation cover; S3, appearance inspection process: the finished insulation cover is manually transported to the appearance inspection area by the staff, and the finished insulation cover is manually dusted and the appearance of the finished insulation cover is observed with the naked eye to determine whether the finished insulation cover has defects. Finally, the staff separately stores the finished insulation cover with appearance defects and the finished insulation cover without appearance defects.
[0005] The traditional production method of blister insulation cover has the following disadvantages: 1. The insulation cover production materials are manually transported between processes, with many turnover times and long production cycles. 2. The appearance defects of the finished insulation cover are manually inspected, and the quality is unstable. 3. The production efficiency is low.
[0006] Therefore, how to replace manual handling of insulation cover production materials with machines, and replace human eyes to detect the appearance of finished insulation covers, automatically screen out finished insulation covers with appearance defects, and improve production efficiency is a technical problem that urgently needs to be solved in this field. Summary of the invention
[0007] The technical problem to be solved by the present invention is to provide a method for producing blister insulation covers, in which a machine replaces manual handling of insulation cover production materials and replaces human eyes to detect the appearance of finished insulation covers, automatically screening out finished insulation covers with appearance defects, and improving production efficiency.
[0008] The present invention is achieved in this way: a method for producing a blister insulation cover comprises the following steps: S1, blister forming process: feeding the insulating cover raw material into a blister forming machine, the blister forming machine includes a feeding device, a heating device, a molding device, a cooling device, a material pulling manipulator and a cutting device; The insulating cover raw material is firstly wound and installed on the feeding device, and then moved from the feeding device to the blister operation area; The heating device heats the insulating cover raw material in the blister operation area, and the insulating cover raw material softens due to heating and becomes a primary material; The forming device absorbs the primary material in the blister operation area, and the primary material is absorbed on the surface of the forming device to become a secondary material, and the forming device is separated from the secondary material. The cooling device cools the secondary material in the blister operation area, and the secondary material hardens due to cooling to become a tertiary material; The material pulling manipulator pulls the third-level material from the blister operation area to the cutting operation area, and at the same time, the third-level material pulls the insulating cover raw material located in the feeding device to the blister operation area; The cutting device cuts the third-level material in the cutting operation area, and the third-level material is cut off from the insulation cover raw material to become an insulation cover semi-finished product; S2, punching process: feeding the semi-finished insulating cover into a punching machine, the punching machine comprising a first conveyor belt device, a loading manipulator, a punching device, a unloading manipulator and a second conveyor belt device; The material pulling robot places the semi-finished insulating cover on the first conveyor belt device; The first conveyor belt device conveys the semi-finished insulating cover to the handling area of the loading robot; The loading robot transfers the semi-finished insulation cover from the first conveyor device to the punching device; The punching device punches the insulating cover semi-finished product into a product shape, and the insulating cover semi-finished product becomes an insulating cover finished product; The unloading robot transfers the finished insulation cover from the punching device to the second conveyor belt device; S3, dust removal process: the second conveyor belt device sends the finished insulation cover into a dust collector; S4, appearance inspection process: the finished insulation cover enters the automatic inspection machine from the dust removal machine, the automatic inspection machine includes a machine vision inspection device, a finished product conveying device, a printing label device, a material dividing robot and a material receiving device, the machine vision inspection device is connected to the printing label device through a printing signal line, and the printing label device is connected to the material dividing robot through a material dividing signal line; The finished product conveying device receives the finished insulation cover product and then conveys the finished insulation cover product to the appearance inspection area; The machine vision inspection device scans from the head end to the tail end of the finished insulation cover in the appearance inspection area to obtain a finished product appearance image, then inspects the finished product appearance image to determine whether the finished insulation cover has defects, and then sends the inspection result signal to the printing label device through the printing signal line; The finished product conveying device then conveys the finished insulation cover from the appearance inspection area to the printing and dispensing area; According to the detection result signal, when the detection result is defective, the printing label device first prints a label of the defect type on the surface of the finished insulation cover in the printing and sorting area, and the printing label device then sends a first sorting signal to the sorting robot, and the sorting robot then transports the finished insulation cover from the printing and sorting area to the defective product bin of the receiving device; when the detection result is not defective, the printing label device does not print, and the printing label device sends a second sorting signal to the sorting robot, and the sorting robot transports the finished insulation cover from the printing and sorting area to the good product bin of the receiving device.
[0009] Furthermore, the machine vision inspection device includes an industrial camera, a substrate, a motor, a driving wheel, a first guide wheel, a second guide wheel, a transmission belt and a detection frame, the industrial camera is fixedly arranged on the substrate, the substrate is horizontally slidably connected to the detection frame, the body of the motor is fixedly arranged on the substrate, the output shaft of the motor is fixedly connected to the center of the driving wheel, the first guide wheel and the second guide wheel are both rotatably arranged on the substrate, the two ends of the transmission belt are respectively fixedly arranged at the entrance and exit of the detection frame, the transmission belt is wound around the first guide wheel, the driving wheel and the second guide wheel, and the industrial camera is located above the appearance inspection area.
[0010] Furthermore, the machine vision inspection device also includes a detection probe, which is installed at the entrance of the appearance inspection area and is also connected to the finished product conveying device through a conveying signal line. The detection probe is used to detect the finished insulation cover.
[0011] Furthermore, the label printing device adopts a laser marking method to form graphic marks on the surface of the finished insulation cover; The machine vision inspection device pre-saves defect type graphic data. When the machine vision inspection device determines that the finished insulation cover is defective, the inspection result signal is a defect-free signal; when the machine vision inspection device determines that the finished insulation cover is defective, the inspection result signal includes the corresponding defect type graphic data.
[0012] Furthermore, the heating device is a heating furnace, the forming device is a vacuum suction mold, the cooling device is a blower, the cutting device is a cutting knife, the entrance and exit of the blister operating area are respectively located at the front end and the rear end of the blister frame, the cooling device is fixedly arranged on the blister frame and is located above the blister operating area, the forming device is slidably connected to the blister frame up and down and is located below the blister operating area, the heating device is slidably connected to the blister frame left and right and is located between the blister operating area and the cooling device, and the cutting device is slidably connected to the blister frame left and right and is located at the exit of the blister operating area.
[0013] Furthermore, the blister machine also includes a positioning device, which includes a cover frame, a slide rod and a drive block. The cover frame is fixedly arranged at the upper end of the slide rod, and the drive block is fixedly arranged at the lower end of the slide rod. The slide rod is also slidably connected to the blister frame. A feed positioning port is formed between the cover frame and the front end of the blister frame, and a discharge positioning port is formed between the cover frame and the rear end of the blister frame. The middle of the cover frame is the blister operation area.
[0014] Furthermore, the punching device includes a base, a top seat, a cutting die and an insulating cover placement table. The top seat is connected to the base in a lifting manner, the cutting die is fixedly connected to the top seat, the bottom of the cutting die is a punching operation area, the insulating cover placement table is connected to the base in a left-right sliding manner, and the insulating cover placement table can enter and exit the punching operation area.
[0015] Furthermore, the punching device also includes a support plate and a guide rail, the guide rail is fixedly arranged on the base and is also located within the punching operation area, the insulation cover placement table slides along the guide rail, the support plate is fixedly arranged on the base and is also located outside the punching operation area, when the insulation cover placement table exits the punching operation area, the lower surface of the insulation cover placement table contacts the support plate.
[0016] Further, the punching device also includes a hydraulic cylinder, a first column, a second column, a first rotating shaft, a second rotating shaft, a first angle plate, a second angle plate, a connecting rod, a first adapter block and a second adapter block, the upper end of the first column is fixedly arranged at the front end of the top seat, the lower end of the first column is fixedly arranged at the first adapter block, the first column is also lifted and arranged at the front end of the base, the upper end of the second column is fixedly arranged at the rear end of the top seat, the lower end of the second column is fixedly arranged at the second adapter block, the second column is also lifted and arranged at the rear end of the base, the cylinder body of the hydraulic cylinder is fixedly arranged on the base, the telescopic end of the hydraulic cylinder is fixedly connected to the first adapter block, the middle part of the first angle plate is fixedly connected to the first rotating shaft, the front end of the first angle plate is hinged to the first adapter block, the rear end of the first angle plate is hinged to the front end of the connecting rod, the middle part of the second angle plate is fixedly connected to the second rotating shaft, the front end of the second angle plate is hinged to the rear end of the connecting rod, the rear end of the second angle plate is hinged to the second adapter block, and the first rotating shaft and the second rotating shaft are both rotatably connected to the base.
[0017] Further, the dust collector includes a dust removal frame, a first rotary strong wind dust blowing device, a second rotary strong wind dust blowing device and a height adjustment device, a clamping dust removal channel is formed between the first rotary strong wind dust blowing device and the second rotary strong wind dust blowing device, the first rotary strong wind dust blowing device is connected to the dust removal frame through the height adjustment device, the second rotary strong wind dust blowing device is fixedly connected to the dust removal frame, and the first rotary strong wind dust blowing device and the second rotary strong wind dust blowing device have the same structure; The first rotary strong wind dust blowing device includes a shell, an ion electrostatic wind rod, a driving shaft, a driven shaft and a pinching wire. The shell has an air inlet and an air outlet. The ion electrostatic wind rod is fixedly arranged inside the shell. The driving shaft and the driven shaft are both rotatably arranged at the air outlet. The pinching wire is wound around the driving shaft and the driven shaft, and a plurality of the pinching wires are arranged at intervals along the axial direction.
[0018] Compared with the background technology, the technical solution of the present invention has the following beneficial effects: (1) In the blister forming process, the raw materials of the insulation cover are continuously fed into the blister forming operation area through the cooperation of the material pulling robot and the cutting device, and are heated, formed, cooled, and then cut to obtain the semi-finished insulation cover products in an orderly manner; in the punching process, the semi-finished insulation cover products are automatically transported to the punching device through the cooperation of the first conveyor belt device and the feeding robot, and the finished insulation cover products are obtained, and then the finished insulation cover products are taken away through the cooperation of the second conveyor belt device and the unloading robot; the finished insulation cover products are sent to the dust removal process by the second conveyor belt device, so that the materials for the production of the insulation cover are transported by machines instead of manually, thereby reducing the turnover time of the materials for the production of the insulation cover.
[0019] (2) Realize online automatic dust removal through dust collector, greatly improve dust removal efficiency and quality stability.
[0020] (3) The machine vision inspection device of the automatic inspection machine replaces the human eye to inspect the appearance of the finished insulation cover, achieving consistency in inspection standards, avoiding the outflow of defective products, and improving inspection efficiency; and the label printing device prints defect type labels on the finished insulation cover with appearance defects, which helps quality inspectors quickly identify the type of appearance defect, and then automatically screens the finished insulation cover with appearance defects through the material sorting robot and stores them separately, improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] The present invention will be further described below in conjunction with embodiments with reference to the accompanying drawings.
[0022] Figure 1 It is a schematic diagram of the positions of the blister machine, the punching machine, the dust removal machine and the automatic testing machine in the present invention.
[0023] Figure 2 It is a structural schematic diagram of the blister machine in the present invention.
[0024] Figure 3 It is a schematic diagram of the positions of the heating device, the cutting device and the positioning device in the present invention.
[0025] Figure 4 It is a schematic diagram of the positions of the positioning device, cutting device and material pulling manipulator in the present invention.
[0026] Figure 5 It is a connection diagram of the cover frame, the slide rod, the drive block and the blister frame in the present invention.
[0027] Figure 6 It is a structural schematic diagram of the feeding device in the present invention.
[0028] Figure 7 It is a schematic diagram of the structure of the punching machine in the present invention.
[0029] Figure 8 It is a schematic diagram of the external structure of the punching device in the present invention.
[0030] Fig. 9 The internal structure of the punching device in the present invention is schematically shown. Figure 1 .
[0031] Fig.10 The internal structure of the punching device in the present invention is shown in FIG. Figure 2 .
[0032] Fig.11 It is a connection diagram of the dust collector and the automatic detection machine in the present invention.
[0033] Fig.12 It is a schematic diagram of the positions of the machine vision detection device, the finished product conveying device, the label printing device, and the material dividing robot in the present invention.
[0034] Fig.13 It is a schematic diagram of the positions of the material dividing robot, the good product bin, and the bad product bin in the present invention.
[0035] Fig.14 It is a connection diagram of the base plate, the motor, the driving wheel, the first guide wheel, the second guide wheel and the transmission belt in the present invention.
[0036] Fig.15 It is a structural schematic diagram of the dust collector in the present invention.
[0037] Fig.16 It is a structural schematic diagram of the first rotary strong wind dust blowing device in the present invention.
[0038] Fig.17 It is a schematic diagram of the positions of the first rotary strong wind dust blowing device, the second rotary strong wind dust blowing device, and the clamping dust removal channel in the present invention.
[0039] Fig.18 It is a structural schematic diagram of the finished insulation cover of the present invention.
[0040] Reference numerals: blister machine 1; feeding device 11; discharge shaft 111; auxiliary material guide mechanism 112; heating device 12; forming device 13; cooling device 14; material pulling manipulator 15; cutting device 16; positioning device 17; cover frame 171; slide bar 172; driving block 173; blister frame 18; Punching machine 2; first conveyor belt device 21; feeding manipulator 22; punching device 23; base 231; top seat 232; knife die 233; insulating cover placement table 234; support plate 235; guide rail 236; hydraulic cylinder 237; first column 238; second column 239; first rotating shaft 2391; second rotating shaft 2392; first angle plate 2393; second angle plate 2394; connecting rod 2395; first transfer block 2396; second transfer block 2397; unloading manipulator 24; second conveyor belt device 25; Dust collector 3; dust removal frame 31; first rotary strong wind dust blowing device 32; housing 321; ion electrostatic wind rod 322; driving shaft 323; driven shaft 324; clamping line 325; second rotary strong wind dust blowing device 33; clamping dust removal channel 34; height adjustment device 35; Automatic inspection machine 4; machine vision inspection device 41; industrial camera 411; substrate 412; motor 413; driving wheel 414; first guide wheel 415; second guide wheel 416; transmission belt 417; inspection frame 418; finished product conveying device 42; label printing device 43; material dividing robot 44; material dividing frame 441; left and right driving mechanism 442; base 443; lifting driving mechanism 444; suction nozzle 445; good product bin 45; bad product bin 46; Finished insulation cover 5. DETAILED DESCRIPTION
[0041] The embodiment of the present invention provides a method for producing blister insulation covers, which overcomes the shortcomings of manual handling of insulation cover production materials and manual inspection of appearance defects of finished insulation cover products in the background technology; it realizes that machines replace manual handling of insulation cover production materials, reduces the turnover time of insulation cover production materials, and automatically removes dust online, greatly improves dust removal efficiency and quality stability, a machine vision inspection device replaces the human eye to inspect the appearance of the finished insulation cover products, and a material sorting robot automatically screens the finished insulation cover products with appearance defects and stores them separately, thereby improving production efficiency.
[0042] The overall idea of the technical solution of the embodiment of the present invention is as follows: The insulation cover raw material moves from the feeding device to the blister operation area, becomes the primary material after heating and softening, becomes the secondary material after adsorption molding, and becomes the tertiary material after cooling and hardening. The pulling manipulator pulls the tertiary material from the blister operation area to the cutting operation area. Since the tertiary material is connected to the insulation cover raw material at this time, the tertiary material pulls the insulation cover raw material located in the feeding device to the blister operation area. The cutting device cuts the tertiary material, so that the tertiary material is disconnected from the insulation cover raw material and becomes an insulation cover semi-finished product; the insulation cover raw material continues to be heated, softened, adsorbed, molded, and cooled and hardened in the blister operation area. The insulation cover semi-finished products are placed one by one and orderly on the first conveyor belt device by the pulling manipulator.
[0043] The first conveyor belt device sends the semi-finished insulation cover to the loading robot. The loading robot absorbs the semi-finished insulation cover from the first conveyor belt and puts it into the punching device. The semi-finished insulation cover is punched to obtain the specified shape and internal circular hole shape to become the finished insulation cover. The unloading robot absorbs the finished insulation cover and puts it into the second conveyor belt device. The second conveyor belt device sends the finished insulation cover to the dust collector.
[0044] The dust collector automatically removes dirt and particulate matter on the surface of the finished insulation cover. Then the finished insulation cover enters the automatic inspection machine. The machine vision inspection device scans the finished insulation cover to determine whether the finished insulation cover has appearance defects. The finished insulation cover is transported from the appearance inspection area to the printing and sorting area. For the finished insulation cover with appearance defects, the printing label device first prints a label of the defect type on its surface, and then the sorting robot transports it to the defective product bin of the receiving device; for the finished insulation cover without appearance defects, the sorting robot directly transports it to the good product bin of the receiving device.
[0045] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0046] See also Figures 1 to 18 , a preferred embodiment of the present invention.
[0047] A method for producing a blister insulation cover comprises the following steps: S1, blister forming process: feeding the insulating cover raw material into the blister forming machine 1, the blister forming machine 1 comprises a feeding device 11, a heating device 12, a molding device 13, a cooling device 14, a material pulling manipulator 15 and a cutting device 16; The insulating cover raw material is firstly wound and installed on the feeding device 11, and then moved from the feeding device 11 to the blister operation area; The heating device 12 heats the insulating cover raw material in the blister operation area, and the insulating cover raw material softens due to heating and becomes a primary material; The molding device 13 absorbs the primary material in the blister operation area. The primary material is absorbed on the surface of the molding device 13 and becomes a secondary material. The molding device 13 then separates from the secondary material. The cooling device 14 cools the secondary material in the blister operation area, and the secondary material hardens due to cooling to become a tertiary material. The material pulling manipulator 15 pulls the third-level material from the blister operation area to the cutting operation area, and at the same time, the third-level material pulls the insulation cover raw material located in the feeding device 11 to the blister operation area; The cutting device 16 cuts the third-level material in the cutting operation area, and the third-level material is cut off from the insulation cover raw material to become an insulation cover semi-finished product; S2, punching process: feeding the semi-finished insulating cover into a punching machine 2, wherein the punching machine 2 comprises a first conveyor belt device 21, a feeding robot 22, a punching device 23, a unloading robot 24 and a second conveyor belt device 25; The material pulling robot 15 places the semi-finished insulating cover on the first conveyor belt device 21; The first conveyor belt device 21 conveys the semi-finished insulating cover to the handling area of the loading robot 22; The loading robot 22 transfers the semi-finished insulation cover from the first conveyor device 21 to the punching device 23; The punching device 23 punches the insulating cover semi-finished product into a product shape, and the insulating cover semi-finished product becomes an insulating cover finished product 5; The unloading robot 24 transfers the finished insulation cover 5 from the punching device 23 to the second conveyor device 25; S3, dust removal process: the second conveyor belt device 25 delivers the finished insulation cover 5 into the dust collector 3; S4, appearance inspection process: the finished insulation cover 5 enters the automatic inspection machine 4 from the dust removal machine 3, and the automatic inspection machine 4 includes a machine vision inspection device 41, a finished product conveying device 42, a printing label device 43, a material dividing robot 44 and a material receiving device. The machine vision inspection device 41 is connected to the printing label device 43 through a printing signal line, and the printing label device 43 is connected to the material dividing robot 44 through a material dividing signal line. The finished product conveying device 42 receives the finished insulation cover product 5, and then conveys the finished insulation cover product 5 to the appearance inspection area; The machine vision inspection device 41 scans from the head end to the tail end of the finished insulation cover in the appearance inspection area to obtain a finished product appearance image, then inspects the finished product appearance image to determine whether the finished insulation cover 5 has defects, and then sends the inspection result signal to the printing label device 43 through the printing signal line; The finished product conveying device 42 then conveys the finished insulation cover product 5 from the appearance inspection area to the printing and dispensing area; According to the detection result signal, when the detection result is defective, the printing label device 43 first prints a label of the defect type on the surface of the insulating cover finished product 5 in the printing and sorting area, and the printing label device 43 then sends a first sorting signal to the sorting robot, and the sorting robot 44 then transports the insulating cover finished product 5 from the printing and sorting area to the defective product bin 46 of the receiving device; when the detection result is not defective, the printing label device 43 does not print, and the printing label device 43 sends a second sorting signal to the sorting robot 44, and the sorting robot 44 transports the insulating cover finished product 5 from the printing and sorting area to the good product bin 45 of the receiving device.
[0048] Beneficial effects of the technical solution of the present invention: (1) In the blister forming process, the raw materials of the insulating cover are continuously fed into the blister forming operation area through the cooperation of the material pulling robot 15 and the cutting device 16, and are heated, formed, cooled, and then cut to obtain the semi-finished insulating cover products in an orderly manner; in the punching process, the semi-finished insulating cover products are automatically transported to the punching device 23 through the cooperation of the first conveyor belt device 21 and the feeding robot 22, and the automatic punching is realized to obtain the finished insulating cover products 5, and then the finished insulating cover products 5 are taken away through the cooperation of the second conveyor belt device 25 and the unloading robot 24; the finished insulating cover products 5 are sent to the dust removal process by the second conveyor belt device 25, so that the materials for the production of the insulating cover are transported by machines instead of manually, thereby reducing the turnover time of the materials for the production of the insulating cover.
[0049] (2) Online automatic dust removal is achieved through the dust collector 3, which greatly improves the dust removal efficiency and quality stability.
[0050] (3) The machine vision inspection device 41 of the automatic inspection machine 4 replaces the human eye to inspect the appearance of the finished insulation cover 5, thereby achieving consistency in inspection standards, avoiding the outflow of defective products, and improving inspection efficiency; and the label printing device prints a label of the defect type on the finished insulation cover with appearance defects, which helps quality inspectors to quickly identify the type of appearance defect, and then automatically screen the finished insulation cover with appearance defects through the material sorting robot 44 and store them separately, thereby improving production efficiency.
[0051] The insulation cover raw material located in the feeding device 11 is a rolled plastic film. The feeding device 11 includes a discharge shaft 111 and an auxiliary material guide mechanism 112. The insulation cover raw material is wound on the discharge shaft 111 and passes between the pinch rollers of the auxiliary material guide mechanism 112 before entering the blister operation area. The insulation cover raw material is fed in a roll form, which helps the insulation cover raw material to continuously enter the blister operation area and improve production efficiency.
[0052] Furthermore, the machine vision inspection device 41 includes an industrial camera 411, a substrate 412, a motor 413, a driving wheel 414, a first guide wheel 415, a second guide wheel 416, a transmission belt 417 and a detection frame 418, the industrial camera 411 is fixedly set on the substrate 412, the substrate 412 is horizontally slidably connected to the detection frame 418, the body of the motor 413 is fixedly set on the substrate 412, the output shaft of the motor 413 is fixedly connected to the center of the driving wheel 414, the first guide wheel 415 and the second guide wheel 416 are both rotatably set on the substrate 412, the two ends of the transmission belt 417 are respectively fixedly set at the entrance and exit of the detection frame 418, the transmission belt 417 is wound around the first guide wheel 415, the driving wheel 414, and the second guide wheel 416, and the industrial camera 411 is located above the appearance inspection area.
[0053] The beneficial effects of this technical solution are as follows: the finished insulation cover product 5 enters and stops in the appearance inspection area, and the industrial camera 411 moves between the entrance and exit of the inspection frame 418 to scan from the head end of the finished insulation cover product to the tail end of the finished insulation cover product to obtain a photographed image of the finished insulation cover product; it is suitable for situations where the finished insulation cover product is larger in size.
[0054] Furthermore, the machine vision inspection device 41 also includes a detection probe, which is installed at the entrance of the appearance inspection area and is also connected to the finished product conveying device through a conveying signal line. The detection probe is used to detect the finished insulation cover.
[0055] The beneficial effect of this technical solution is: when there is a finished insulation cover product in the appearance inspection area, when the detection probe finds another finished insulation cover product at the entrance of the detection frame, the detection probe sends a signal to the finished product conveying device, and the finished product conveying device stops conveying. After the finished insulation cover product in the appearance inspection area is inspected, the machine vision inspection device sends a signal to the finished product conveying device, and the finished product conveying device starts conveying.
[0056] Furthermore, the label printing device 43 uses laser marking to form graphic marks on the surface of the finished insulation cover 5; The machine vision inspection device 41 pre-saves defect type graphic data. When the machine vision inspection device 41 determines that the insulation cover finished product 5 is defective, the inspection result signal is a defect-free signal; when the machine vision inspection device 41 determines that the insulation cover finished product 5 is defective, the inspection result signal includes the corresponding defect type graphic data.
[0057] The beneficial effect of this technical solution is that the defect type label is a graphic mark, and the quality inspector can intuitively see what kind of appearance defect it is. The machine vision detection device 41 detects and analyzes the appearance defect type in the finished product appearance image, and then searches for the defect type graphic data, and sends the corresponding defect type graphic data to the printing label device 43 and the material separation robot 44.
[0058] In this embodiment, the appearance defects of the finished insulation cover 5 are mainly of two types: one is that the blister is not formed; the other is that the convex bulge is stretched. For example, when the machine vision detection device 41 detects and analyzes the appearance defect type in the finished product appearance image as the blister is not formed, the printing label device 43 uses laser marking to form the text of the blister is not formed on the surface of the finished insulation cover 5.
[0059] The good product bin 45 and the bad product bin 46 are respectively located on the left and right sides of the printing label assembly 43, and the material dividing robot 44 is located above the finished product conveying device 42. The material dividing robot 44 includes a material dividing frame 441, a left and right driving mechanism 442, a base 443, a lifting driving mechanism 444 and a suction nozzle 445. The suction nozzle 445 is connected to the base 443 through the lifting driving mechanism 444, and the base 443 is connected to the material dividing frame 441 through the left and right driving mechanism 442. The suction nozzle 245 is used to suck the finished insulation cover 5.
[0060] Furthermore, the heating device 12 is a heating furnace, the forming device 13 is a vacuum suction mold, the cooling device 14 is a blower, the cutting device 16 is a cutting knife, the entrance and exit of the blister operating area are respectively located at the front end and the rear end of the blister frame 18, the cooling device 14 is fixedly arranged on the blister frame 18 and is located above the blister operating area, the forming device 13 is slidably connected to the blister frame 18 up and down and is located below the blister operating area, the heating device 12 is slidably connected to the blister frame 18 left and right and is located between the blister operating area and the cooling device 14, and the cutting device 16 is slidably connected to the blister frame 18 left and right and is located at the exit of the blister operating area.
[0061] The beneficial effects of this technical solution are as follows: the heating device 12, the forming device 13, the cooling device 14, and the cutting device 16 cooperate in an orderly manner. The heating device 12 first moves between the blister operation area and the cooling device 14 to heat the insulating cover material; after heating, the heating device 12 withdraws from between the blister operation area and the cooling device 14 to avoid interfering with the air blowing cooling of the cooling device 14.
[0062] The vacuum suction mold is a mold that generates suction by vacuum, and there are suction holes on the molding surface of the mold. The vacuum suction mold moves upward to the blister operation area, and the suction holes suck the primary material, which is adsorbed on the molding surface of the mold to form the required shape to obtain the secondary material; then the suction holes release the secondary material, and the vacuum suction mold moves downward to separate from the secondary material.
[0063] Furthermore, the blister machine 1 also includes a positioning device 17, which includes a cover frame 171, a slide rod 172 and a drive block 173. The cover frame 171 is fixedly arranged at the upper end of the slide rod 172, and the drive block 173 is fixedly arranged at the lower end of the slide rod 172. The slide rod 172 is also slidably connected to the blister frame 18. A feed positioning port is formed between the cover frame 171 and the front end of the blister frame 18, and a discharge positioning port is formed between the cover frame 171 and the rear end of the blister frame 18. The middle of the cover frame 171 is the blister operation area.
[0064] The beneficial effects of this technical solution are as follows: the insulation cover raw material enters the blister operation area from the material inlet positioning port and then reaches the material outlet positioning port; the driving block 173 lowers the cover frame 171 through the slide bar 172 to press the insulation cover raw material for positioning; then the insulation cover raw material is heated and softened, adsorbed and shaped, and cooled and hardened in sequence to obtain the third-level material, and finally the driving block 173 raises the cover frame 171 through the slide bar 172 to release the third-level material. The clamping claw of the material pulling manipulator 15 clamps the third-level material from the material outlet positioning port and pulls the third-level material to the cutting operation area, and the cutting device 16 cuts the third-level material and the insulation cover raw material.
[0065] Furthermore, the punching device 23 includes a base 231, a top seat 232, a cutting die 233 and an insulating cover placement platform 234. The top seat 232 is connected to the base 231 for lifting and lowering, the cutting die 233 is fixedly connected to the top seat 232, and the bottom of the cutting die 233 is a punching operation area. The insulating cover placement platform 234 is connected to the base 231 for left and right sliding, and the insulating cover placement platform 234 can enter and exit the punching operation area.
[0066] The beneficial effects of this technical solution are as follows: when the insulating cover placement table 234 exits the punching operation area, the loading robot 22 places the semi-finished insulating cover on the insulating cover placement table 234, and the loading robot 22 does not need to enter the punching operation area, thereby improving the loading efficiency; the insulating cover placement table 234 transports the semi-finished insulating cover into the punching operation area, and the knife die 233 descends to punch out the required shape and internal circular hole shape on the semi-finished insulating cover; then the insulating cover placement table 234 transports the finished insulating cover 5 out of the punching operation area, and the unloading robot 24 takes the finished insulating cover 5 from the insulating cover placement table 234, and the unloading robot 24 does not need to enter the punching operation area, thereby improving the unloading efficiency.
[0067] Both the loading robot 22 and the unloading robot 24 are robots with suction cups.
[0068] Furthermore, the punching device 23 also includes a support plate 235 and a guide rail 236. The guide rail 236 is fixedly arranged on the base 231 and is also located within the punching operation area. The insulation cover placement platform 234 slides along the guide rail 236. The support plate 235 is fixedly arranged on the base 231 and is also located outside the punching operation area. When the insulation cover placement platform 234 exits the punching operation area, the lower surface of the insulation cover placement platform 234 contacts the support plate 235.
[0069] The beneficial effect of this technical solution is as follows: when the insulation cover placement platform 234 is outside the punching operation area, the support plate 235 improves the stability of the insulation cover placement platform 234 in transferring materials.
[0070] Furthermore, the punching device 23 also includes a hydraulic cylinder 237, a first column 238, a second column 239, a first rotating shaft 2391, a second rotating shaft 2392, a first angle plate 2393, a second angle plate 2394, a connecting rod 2395, a first transfer block 2396 and a second transfer block 2397, wherein the upper end of the first column 238 is fixedly arranged at the front end of the top seat 232, the lower end of the first column 238 is fixedly arranged at the first transfer block 2396, the first column 238 is also lifted and arranged at the front end of the base 231, the upper end of the second column 239 is fixedly arranged at the rear end of the top seat 232, the lower end of the second column 239 is fixedly arranged at the second transfer block 2397, and the second column 239 is also lifted and arranged at the base 2 31, the cylinder body of the hydraulic cylinder 237 is fixedly arranged on the base 231, the telescopic end of the hydraulic cylinder 237 is fixedly connected to the first adapter block 2396, the middle part of the first angle plate 2393 is fixedly connected to the first rotating shaft 2391, the front end of the first angle plate 2393 is hinged to the first adapter block 2396, the rear end of the first angle plate 2393 is hinged to the front end of the connecting rod 2395, the middle part of the second angle plate 2394 is fixedly connected to the second rotating shaft 2392, the front end of the second angle plate 2394 is hinged to the rear end of the connecting rod 2395, the rear end of the second angle plate 2394 is hinged to the second adapter block 2397, and the first rotating shaft 2391 and the second rotating shaft 2392 are both rotatably connected to the base 231.
[0071] The beneficial effects of this technical solution are as follows: when the hydraulic cylinder 237 drives the first adapter block 2396 to rise and fall, the second adapter block 2397 is synchronously raised and lowered with the help of the first angle plate 2393, the second angle plate 2394 and the connecting rod 2395, and then the front and rear ends of the top seat 232 are synchronously raised and lowered through the first column 238 and the second column 239, thereby improving the punching stability of the knife die 233.
[0072] Further, the dust collector 3 includes a dust removal frame 31, a first rotary strong wind dust blowing device 32, a second rotary strong wind dust blowing device 33 and a height adjustment device 35, a clamping dust removal channel 34 is formed between the first rotary strong wind dust blowing device 32 and the second rotary strong wind dust blowing device 33, the first rotary strong wind dust blowing device 32 is connected to the dust removal frame 31 through the height adjustment device 35, the second rotary strong wind dust blowing device 33 is fixedly connected to the dust removal frame 31, and the first rotary strong wind dust blowing device 32 and the second rotary strong wind dust blowing device 33 have the same structure; The first rotary strong wind dust blowing device 32 includes a shell 321, an ion electrostatic wind rod 322, a driving shaft 323, a driven shaft 324 and a clamping line 325. The shell 321 has an air inlet and an air outlet. The ion electrostatic wind rod 322 is fixedly arranged inside the shell 321. The driving shaft 323 and the driven shaft 324 are both rotatably arranged at the air outlet. The clamping line 325 is wound around the driving shaft 323 and the driven shaft 324, and a plurality of the clamping lines 325 are arranged at intervals along the axial direction.
[0073] The beneficial effects of this technical solution are as follows: the finished insulation cover 5 enters the clamping and dust removal channel 34, the clamping line of the first rotary strong wind dust blowing device 32 and the clamping line of the second rotary strong wind dust blowing device 33 clamp the finished insulation cover 5 up and down respectively, the driving shaft 323 moves the clamping line 325, so that the clamping line 325 moves with the finished insulation cover 5, the wind passes through the gap between the two adjacent clamping lines 325 and then blows to the finished insulation cover 5, the ion electrostatic wind rod 322 generates ions, the ions are blown to the surface of the finished insulation cover 5 with the help of the wind, the dust adheres to the ions and is blown away by the wind, and the finished insulation cover 5 moves and removes dust at the same time. The height adjustment device 35 adjusts the distance between the first rotary strong wind dust blowing device 32 and the second rotary strong wind dust blowing device 33, thereby adjusting the height of the clamping and dust removal channel 34, which helps to adapt to finished insulation covers of different heights.
[0074] The present invention adopts a continuous production method. After the insulation cover raw material passes through the blister process, it comes to the punching device 23 through the first transmission belt 417 device. The loading robot 22 grabs the semi-finished insulation cover from the first transmission belt 417 device and puts it into the punching device 23, entering the punching process to obtain the insulation cover finished product 5. The unloading robot 24 takes the insulation cover finished product 5 from the punching device 23 and puts it on the second transmission belt 417 device. Then the insulation cover finished product 5 enters the dust removal process and the appearance inspection process, and finally the insulation cover finished product 5 is sorted and packaged.
[0075] The present invention is mainly composed of a vacuum forming machine 1, a punching machine 2, a dust removal machine 3 and an automatic detection machine 4.
[0076] Function of the blister machine 1: The blister machine 1 heats the plastic coil through the heating device 12 to soften it, which is convenient for subsequent molding operations. At the same time, the vacuum suction mold is used to adsorb the softened plastic coil on the molding surface of the mold to form the desired shape. After that, the plastic is hardened and shaped through the cooling device 14 or natural cooling.
[0077] Specifically, the insulating cover raw material is discharged from the discharge shaft 111, passes through the auxiliary material guide mechanism 112, and comes to the top of the vacuum suction mold. When the blister is working, the heating furnace will move between the blister operation area and the blower to heat the insulating cover raw material (usually the heating time is 10-15 seconds), the purpose is to soften the insulating cover raw material to a state that can be formed, and obtain a primary material; the heating furnace will return to its original position after heating, the vacuum suction mold will rise to the height of the primary material, and then the primary material will be adsorbed to the molding surface of the vacuum suction mold (usually for 7-10 seconds). ), after the blistering is completed, the vacuum suction mold descends, thus completing the demoulding action and obtaining the secondary material; at the same time, the blower blows air to the secondary material to quickly cool it down (generally the blowing time is 5-8 seconds), and the secondary material is cooled and hardened to become the tertiary material; the material pulling manipulator 15 moves and approaches the tertiary material, and the clamping claws of the material pulling manipulator 15 clamp the tertiary material, and then pull the tertiary material from the blistering operation area to the cutting operation area, at this time the cutter will cut over, cut off the tertiary material from the insulation cover raw material, and obtain the insulation cover semi-finished product, and the material pulling manipulator puts the insulation cover semi-finished product on the first conveyor belt device 21. In this way, a whole action is completed.
[0078] The punching machine 2 has the function of shearing and punching the semi-finished insulating cover by the die cutter 233 and the pressure of the hydraulic cylinder 237. The loading manipulator 22 and the unloading manipulator 24 are mainly used to realize automatic loading and unloading.
[0079] Specifically, the punching device 23 punches out the desired shape and the internal circular hole shape. First, the semi-finished insulation cover sent by the first conveyor belt device 21 is grabbed by the feeding robot 22 to the insulation cover placement table 234 of the punching device 23. The insulation cover placement table 234 is provided with an auxiliary positioning point. The insulation placement table will enter the inside of the punching device 23 through the slide rail and be located below the cutting die 233. The cutting die 233 is locked to the top seat 232 through the clamping block, and then the top seat 232 presses downward with the cutting die 233. Through the guidance of the four columns and the hydraulic cylinder 237, a large pressure is generated to punch and shape the insulation cover to obtain the finished insulation cover 5. After the punching is completed, the insulation cover placement table 234 will move outward, and the cutting die 233 will rise back to its original position. In this way, the whole action is completed.
[0080] Dust collector 3: Mainly used to remove dirt and particles on the surface of the product.
[0081] Automatic inspection machine 4: It realizes online inspection of product appearance and defective phenomena, and prints labels for finished insulation covers with appearance defects, i.e. defective products, to mark what the defective phenomena are. Good and defective products identified by the automatic inspection machine 4 are collected separately. One side is a good product bin 45 for storing finished insulation covers without appearance defects, and the other side is a defective product bin 46 for storing finished insulation covers with appearance defects; and neat stacking is achieved at the same time.
[0082] Specifically, the automatic inspection machine 4 is mainly completed by a machine vision inspection device 41. The machine vision inspection device 41 uses machine vision to replace human eyes to detect and identify the appearance defects of various products. It mainly collects product images through equipment such as industrial cameras 411, and uses image processing and analysis to detect product defects.
[0083] Although the specific implementation modes of the present invention are described above, those skilled in the art should understand that the specific implementation modes described are only illustrative and are not intended to limit the scope of the present invention. Equivalent modifications and changes made by those skilled in the art in accordance with the spirit of the present invention should be included in the scope of protection of the claims of the present invention.
Claims
1. A method for producing a blister insulation cover, characterized in that: The following steps are involved: S1, blister forming process: feeding the insulating cover raw material into a blister forming machine, the blister forming machine includes a feeding device, a heating device, a molding device, a cooling device, a material pulling manipulator and a cutting device; The insulating cover raw material is firstly wound and installed on the feeding device, and then moved from the feeding device to the blister operation area; The heating device heats the insulating cover raw material in the blister operation area, and the insulating cover raw material softens due to heating and becomes a primary material; The forming device absorbs the primary material in the blister operation area, and the primary material is absorbed on the surface of the forming device to become a secondary material, and the forming device is separated from the secondary material. The cooling device cools the secondary material in the blister operation area, and the secondary material hardens due to cooling to become a tertiary material; The material pulling manipulator pulls the third-level material from the blister operation area to the cutting operation area, and at the same time, the third-level material pulls the insulating cover raw material located in the feeding device to the blister operation area; The cutting device cuts the third-level material in the cutting operation area, and the third-level material is cut off from the insulation cover raw material to become an insulation cover semi-finished product; S2, punching process: feeding the semi-finished insulating cover into a punching machine, the punching machine comprising a first conveyor belt device, a loading manipulator, a punching device, a unloading manipulator and a second conveyor belt device; The material pulling robot places the semi-finished insulating cover on the first conveyor belt device; The first conveyor belt device conveys the semi-finished insulating cover to the handling area of the loading robot; The loading robot transfers the semi-finished insulation cover from the first conveyor device to the punching device; The punching device punches the insulating cover semi-finished product into a product shape, and the insulating cover semi-finished product becomes an insulating cover finished product; The unloading robot transfers the finished insulation cover from the punching device to the second conveyor belt device; S3, dust removal process: the second conveyor belt device sends the finished insulation cover into a dust collector; S4, appearance inspection process: the finished insulation cover enters the automatic inspection machine from the dust removal machine, the automatic inspection machine includes a machine vision inspection device, a finished product conveying device, a printing label device, a material dividing robot and a material receiving device, the machine vision inspection device is connected to the printing label device through a printing signal line, and the printing label device is connected to the material dividing robot through a material dividing signal line; The finished product conveying device receives the finished insulation cover product and then conveys the finished insulation cover product to the appearance inspection area; The machine vision inspection device scans from the head end to the tail end of the finished insulation cover in the appearance inspection area to obtain a finished product appearance image, then inspects the finished product appearance image to determine whether the finished insulation cover has defects, and then sends the inspection result signal to the printing label device through the printing signal line; The finished product conveying device then conveys the finished insulation cover from the appearance inspection area to the printing and dispensing area; According to the detection result signal, when the detection result is defective, the printing label device first prints a label of the defect type on the surface of the finished insulation cover in the printing and sorting area, and the printing label device then sends a first sorting signal to the sorting robot, and the sorting robot then transports the finished insulation cover from the printing and sorting area to the defective product bin of the receiving device; when the detection result is not defective, the printing label device does not print, and the printing label device sends a second sorting signal to the sorting robot, and the sorting robot transports the finished insulation cover from the printing and sorting area to the good product bin of the receiving device.
2. The method for producing a blister insulation cover according to claim 1, characterized in that: The machine vision inspection device includes an industrial camera, a substrate, a motor, a driving wheel, a first guide wheel, a second guide wheel, a transmission belt and a detection frame, the industrial camera is fixedly arranged on the substrate, the substrate is horizontally slidably connected to the detection frame, the body of the motor is fixedly arranged on the substrate, the output shaft of the motor is fixedly connected to the center of the driving wheel, the first guide wheel and the second guide wheel are both rotatably arranged on the substrate, the two ends of the transmission belt are respectively fixedly arranged at the entrance and exit of the detection frame, the transmission belt is wound around the first guide wheel, the driving wheel and the second guide wheel, and the industrial camera is located above the appearance inspection area.
3. The method for producing a blister insulation cover according to claim 2, characterized in that: The machine vision inspection device also includes a detection probe, which is installed at the entrance of the appearance inspection area and is also connected to the finished product conveying device through a conveying signal line. The detection probe is used to detect the finished insulation cover product.
4. The method for producing a blister insulation cover according to claim 1, characterized in that: The label printing device uses laser marking to form graphic marks on the surface of the finished insulation cover; The machine vision inspection device pre-saves defect type graphic data. When the machine vision inspection device determines that the finished insulation cover is defective, the inspection result signal is a defect-free signal; when the machine vision inspection device determines that the finished insulation cover is defective, the inspection result signal includes the corresponding defect type graphic data.
5. The method for producing a blister insulation cover according to claim 1, characterized in that: The heating device is a heating furnace, the forming device is a vacuum suction mold, the cooling device is a blower, the cutting device is a cutting knife, the inlet and outlet of the blister operating area are respectively located at the front end and the rear end of the blister frame, the cooling device is fixedly arranged on the blister frame and is located above the blister operating area, the forming device is slidably connected to the blister frame up and down and is located below the blister operating area, the heating device is slidably connected to the blister frame left and right and is located between the blister operating area and the cooling device, and the cutting device is slidably connected to the blister frame left and right and is located at the outlet of the blister operating area.
6. The method for producing a blister insulation cover according to claim 5, characterized in that: The blister machine also includes a positioning device, which includes a cover frame, a slide rod and a drive block. The cover frame is fixedly arranged at the upper end of the slide rod, and the drive block is fixedly arranged at the lower end of the slide rod. The slide rod is also slidably connected to the blister frame. A feed positioning port is formed between the cover frame and the front end of the blister frame, and a discharge positioning port is formed between the cover frame and the rear end of the blister frame. The middle of the cover frame is the blister operation area.
7. The method for producing a blister insulation cover according to claim 1, characterized in that: The punching device includes a base, a top seat, a cutting die and an insulating cover placement platform. The top seat is connected to the base in a lifting manner, the cutting die is fixedly connected to the top seat, the bottom of the cutting die is a punching operation area, the insulating cover placement platform is connected to the base for left and right sliding, and the insulating cover placement platform can enter and exit the punching operation area.
8. The method for producing a blister insulation cover according to claim 7, characterized in that: The punching device also includes a support plate and a guide rail. The guide rail is fixedly arranged on the base and is also located within the punching operation area. The insulation cover placement table slides along the guide rail. The support plate is fixedly arranged on the base and is also located outside the punching operation area. When the insulation cover placement table exits the punching operation area, the lower surface of the insulation cover placement table contacts the support plate.
9. The method for producing a blister insulation cover according to claim 7, characterized in that: The punching device also includes a hydraulic cylinder, a first column, a second column, a first rotating shaft, a second rotating shaft, a first angle plate, a second angle plate, a connecting rod, a first transfer block and a second transfer block. The upper end of the first column is fixedly arranged at the front end of the top seat, the lower end of the first column is fixedly arranged at the first transfer block, the first column is also lifted and arranged at the front end of the base, the upper end of the second column is fixedly arranged at the rear end of the top seat, the lower end of the second column is fixedly arranged at the second transfer block, and the second column is also lifted and arranged at the rear end of the base. The cylinder body of the hydraulic cylinder is fixedly arranged on the base, the telescopic end of the hydraulic cylinder is fixedly connected to the first transfer block, the middle part of the first angle plate is fixedly connected to the first rotating shaft, the front end of the first angle plate is hinged to the first transfer block, the rear end of the first angle plate is hinged to the front end of the connecting rod, the middle part of the second angle plate is fixedly connected to the second rotating shaft, the front end of the second angle plate is hinged to the rear end of the connecting rod, the rear end of the second angle plate is hinged to the second transfer block, and the first rotating shaft and the second rotating shaft are both rotatably connected to the base.
10. The method for producing a blister insulation cover according to claim 1, characterized in that: The dust collector comprises a dust removal frame, a first rotary strong wind dust blowing device, a second rotary strong wind dust blowing device and a height adjustment device, a clamping dust removal channel is formed between the first rotary strong wind dust blowing device and the second rotary strong wind dust blowing device, the first rotary strong wind dust blowing device is connected to the dust removal frame through the height adjustment device, the second rotary strong wind dust blowing device is fixedly connected to the dust removal frame, and the first rotary strong wind dust blowing device and the second rotary strong wind dust blowing device have the same structure; The first rotary strong wind dust blowing device includes a shell, an ion electrostatic wind rod, a driving shaft, a driven shaft and a pinching wire. The shell has an air inlet and an air outlet. The ion electrostatic wind rod is fixedly arranged inside the shell. The driving shaft and the driven shaft are both rotatably arranged at the air outlet. The pinching wire is wound around the driving shaft and the driven shaft, and a plurality of the pinching wires are arranged at intervals along the axial direction.
Citation Information
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CN122684724A