Baking oven for producing polariscope

Abstract

The invention relates to the field of baking ovens, and provides a baking oven for polariscope production, which comprises an oven body, an air pressure structure, a driving structure, a baking structure and a baking channel are arranged in the oven body, and a loading opening is formed in the baking channel and used for storing and taking the polariscopes; the rotating disc positioning tool is arranged along the furnace body and penetrates through the baking channel; comprising a turntable frame and a plurality of tool discs, the turntable frame is connected with the driving structure, and the driving structure provides rotation of the turntable frame; an air pressure channel is arranged in the rotary table frame and connected with the air pressure structure. The surface of the tool disc is a concave arc-shaped surface, and vent holes are formed in the bottom surface of the arc-shaped surface; the lifting valve is mounted on the turntable frame and is communicated with the air pressure channel; the closing cylinder is mounted on the furnace body, is positioned at the loading opening and is used for closing the lifting valve; and the conduction cylinder is arranged on the furnace body. The method has the effect of accurately baking and forming the polariscope.

Description

Technical Field

[0001] The present application relates to the field of baking ovens, and in particular to a baking oven for producing polarizers. Background Art

[0002] Polarized lenses are a type of optical lens used in glasses. They are made of resin sheets and have the advantages of being light, impact-resistant, UV-proof, comfortable and safe to wear, and having good light transmittance.

[0003] Polarizers are made of flat resin during production. The flat resin is heated to bend it into a curved surface. However, since the bending conditions of the general polarizer raw resin are difficult to control during heating and bending, it is difficult to obtain an accurate curvature of the formed curved polarizer, which affects subsequent processing and use. If the curvature is uncertain, it will also affect the user's wearing comfort. Summary of the Invention

[0004] In order to improve the above-mentioned problems, the present application provides a baking furnace for producing polarizers.

[0005] The present application provides a polarizer production baking furnace that adopts the following technical solutions: A baking furnace for producing polarizers, comprising a furnace body; the furnace body is provided with a gas pressure structure, a drive structure, a baking structure and a baking channel; the baking channel is provided with a loading port for storing and accessing polarizers; A turntable positioning tool is arranged along the furnace body and passes through the baking channel; it includes a turntable frame and a plurality of tooling plates; the turntable frame is connected to the drive structure, and the drive structure provides rotation of the turntable frame; an air pressure channel is provided inside the turntable frame, and the air pressure channel is connected to the air pressure structure; the surface of the tooling plate is an inwardly concave arc surface, and the bottom surface of the arc surface is provided with a vent hole, and the vent hole is connected to the air pressure channel; a lifting valve, mounted on the turntable frame and connected to the air pressure channel; a closing cylinder, mounted on the furnace body and located at the loading port, for closing the lifting valve; The conducting cylinder is installed on the furnace body and is located at the loading port, close to the channel opening of the baking channel, and is used to open the lifting valve to provide conduction of the air pressure channel.

[0006] By adopting the above technical solution, the resin raw material is located on the curved surface of the tooling disk, and the lifting valve is driven by the guide cylinder to open the air pressure channel. The baking structure heats and bakes the baking channel. At the same time, the driving structure drives the turntable positioning tooling to rotate along the baking channel. The tooling disk drives the resin raw material into the baking channel as it rotates. During the rotation process, the air pressure structure provides negative pressure to the air holes on the tooling disk through the air pressure channel, so that the resin raw material is adsorbed on the curved surface. After the turntable positioning tooling is driven by the driving structure to rotate along the furnace body to the baking channel, the resin raw material is softened and bent by the baking effect, and bent to fit the curved surface by the negative pressure during the bending process, thereby forming a qualified curved surface polarizer, thereby improving the yield rate.

[0007] Optionally, there are a plurality of turntable racks, and each of the turntable racks is provided with a lifting valve.

[0008] By adopting the above technical solution, the corresponding lifting valve can be independently controlled by the closing cylinder and the conducting cylinder, without affecting the negative pressure state of the turntable rack and the lifting valve in other baking channels, thereby achieving the purpose of separate storage.

[0009] Optionally, the driving structure includes a driving member, an annular slide rail and a pivot ring; the pivot ring is slidingly connected to the annular slide rail; each group of turntable frames is connected to the pivot ring; the driving member is installed on the furnace body, located at the loading port, and is connected to the pivot ring to provide driving force for the rotation of the pivot ring.

[0010] By adopting the above technical solution, the driving part can drive the pivot ring to rotate along the annular slide rail. The annular slide rail provides load-bearing for the pivot ring and the turntable positioning tooling, so that several turntable racks and tooling plates can be stably entered into the baking channel for baking in turn, or rotated out of the baking channel to the loading port for loading and unloading.

[0011] Optionally, the driving member includes a driving motor and a gear; the driving motor is connected to the furnace body, and the gear is connected to the driving end of the driving motor; the pivot ring is provided with meshing teeth along the annular surface, and meshes with the gear through the meshing teeth.

[0012] By adopting the above technical solution, the driving motor drives the pivot ring to rotate along the annular slide rail through the gear, so as to drive the turntable frame to rotate from the baking channel in sequence. The meshing teeth and gears can provide a stable driving effect, ensuring the stability of the driving effect and the accuracy of the driving speed.

[0013] Optionally, the baking channel includes a channel outlet and a channel inlet, and both the channel outlet and the channel inlet are provided with induction components, and the induction components are electrically connected to the closing cylinder or the conducting cylinder.

[0014] By adopting the above technical solution and utilizing the sensing effect of the sensing element, the negative pressure state on the tooling tray can be changed more stably and accurately, making it easier to store or remove the polarizer, or more accurately subject to the compaction effect of the negative pressure.

[0015] Optionally, the pneumatic structure includes a pneumatic cylinder, a piston member and a driving part; the pneumatic cylinder contains a piston cavity, with a negative pressure port and a positive pressure port on both sides, and the negative pressure port and the positive pressure port are both connected to the piston cavity; the negative pressure port is connected to the pneumatic channel; the piston member is located in the piston cavity and slides along the inner wall of the piston cavity; the driving part is connected to the pneumatic cylinder, and the driving end is connected to the piston member, providing driving force for the sliding of the piston member.

[0016] By adopting the above technical solution, the driving part drives the piston to move along the piston cavity. During the movement, air is extracted through the negative pressure port, so that negative pressure is formed in the air pressure channel. The air vent generates negative pressure suction to suck the resin raw material. When the piston moves toward the negative pressure port, positive pressure is generated in the piston cavity, or the lifting valve is driven by the closing cylinder to close the air pressure channel. At this time, the air vent loses the negative pressure supply, loosening the resin raw material or the molded polarizer.

[0017] Optionally, the pneumatic structure also includes a sealing cylinder, an air supply pipe, a sealing part and an elastic part; the sealing cylinder is installed on the outer wall of the tooling disk, and the tube mouth of the sealing cylinder is located on the top surface of the tooling disk; the sealing part is plugged into the sealing cylinder, one end of the elastic part is connected to the sealing part, and the other end is connected to the inner wall of the sealing cylinder, providing elastic force for resetting the sealing part; one end of the air supply pipe is connected to the sealing cylinder, and the other end is connected to the positive pressure port, and when the piston member provides negative pressure to the negative pressure port, it simultaneously provides positive pressure to the positive pressure port.

[0018] By adopting the above technical solution, when the piston is driven by the driving part and moves toward the positive pressure port, the gas is squeezed toward the positive pressure port, and the gas enters the sealing cylinder through the gas pipe and pushes the sealing part to move toward the tooling disk. The negative pressure port is then subjected to the effect of exhaust, and the vent hole generates negative pressure to absorb the resin raw material, and the sealing part extends out of the air pressure cylinder and blocks the top surface of the tooling disk, thereby confining the resin raw material in the tooling disk, preventing the resin raw material from bending during baking and lifting the corners, resulting in separation from the tooling disk or position displacement, thereby improving the accuracy of the polarizer baking molding.

[0019] Optionally, the pneumatic structure is connected to the pivot ring and rotates along the annular slide rail following the pivot ring.

[0020] By adopting the above technical solution, the pneumatic structure will not be interfered with when the turntable positioning tool rotates, and can synchronously follow the rotation, thereby improving adaptability.

[0021] Optionally, the baking range of the baking structure is within the baking channel, and the loading port is not within the baking range.

[0022] By adopting the above technical solution, electrical components such as the closing cylinder, the conducting cylinder, the driving part, and the driving structure are all within the installation range of the loading port and will not be affected by the high temperature of the baking range of the baking channel, thereby improving the service life of the equipment.

[0023] Optionally, a heat insulation cover is further provided outside the furnace body.

[0024] By adopting the above technical solution, the heat insulation cover can cover the furnace body to prevent heat leakage or heat from affecting external workers, providing more stable safety.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. The resin raw material is located on the curved surface of the tooling disc. The guide cylinder drives the lifting valve to open the air pressure channel, and the baking structure heats and bakes the baking channel. At the same time, the driving structure drives the turntable positioning tooling to rotate along the baking channel. The tooling disc drives the resin raw material into the baking channel as it rotates. During the rotation process, the air pressure structure provides negative pressure to the vents on the tooling disc through the air pressure channel, so that the resin raw material is adsorbed on the curved surface. After the turntable positioning tooling is driven by the driving structure to rotate along the furnace body to the baking channel, the resin raw material is softened and bent by the baking effect. During the bending process, it is bent to fit the curved surface due to the negative pressure, thereby forming a qualified curved polarizer, which improves the yield rate. 2. Use the closing cylinder and the conducting cylinder to independently control the corresponding lifting valve, without affecting the negative pressure state of the turntable rack and the lifting valve in other baking channels, so as to achieve the effect of separate storage; 3. The driving member can drive the pivot ring to rotate along the annular slide rail. The annular slide rail provides the load-bearing capacity for the pivot ring and the turntable positioning fixture, so that the turntable racks and fixture trays can be stably placed in the baking channel for baking, or rotated out of the baking channel to the loading port for loading and unloading. 4. The driving motor drives the pivot ring to rotate along the annular slide rail through the gear, so as to drive the turntable frame to rotate from the baking channel in sequence. The meshing teeth and gears can provide a stable driving effect, ensuring the stability of the driving effect and the accuracy of the driving speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of a first three-dimensional structure of a baking oven in one embodiment of the present application; Figure 2 This is a schematic diagram of a first top view structure after the driving structure is hidden in the furnace body in some embodiments of the present application; Figure 3This is a schematic diagram of a second top view structure after the driving structure is hidden in the furnace body in some embodiments of the present application; Figure 4 This is a schematic diagram of a second three-dimensional structure of a baking oven in some embodiments of the present application; Figure 5 This is a schematic diagram of a first cross-sectional structure of the air pressure structure and the turntable positioning tooling in some embodiments of the present application; Figure 6 This is a schematic diagram of a second cross-sectional structure of the air pressure structure and the turntable positioning fixture in some embodiments of the present application; Figure 7 This application Figure 6 Schematic diagram of the enlarged structure of A; Figure 8 This is a schematic diagram of a third three-dimensional structure of a baking oven in some embodiments of the present application; : The marks in the accompanying drawings are: 1. furnace body, 11. air pressure structure, 111. air pressure cylinder, 1111. negative pressure port, 1112. positive pressure port, 112. piston member, 113. driving part, 114. sealing cylinder, 115. sealing part, 116. air pipe, 117. elastic part, 12. driving structure, 121. driving member, 1211. driving motor, 1212. gear, 122. annular slide rail, 123. pivot ring, 141. channel outlet, 142. channel inlet, 143. induction member, 13. baking structure, 14. baking channel, 15. loading port, 2. turntable positioning tooling, 21. turntable frame, 211. air pressure channel, 22. tooling disk, 221. vent, 3. lifting valve, 4. closing cylinder, 5. conducting cylinder, 6. heat insulation cover. DETAILED DESCRIPTION

[0027] The following describes the embodiments of the present application through specific examples. Those skilled in the art can easily understand the other advantages and effects of the present application from the information disclosed in this application. The present application can also be implemented or applied through different specific embodiments. The details in this application can also be modified or changed according to different viewpoints and application systems without departing from the spirit of this application. It should be noted that the embodiments and features in the embodiments of this application can be combined with each other unless they conflict.

[0028] The following is a detailed description of the embodiments of the present application with reference to the accompanying drawings so that those skilled in the art can easily implement the present application. The present application can be embodied in many different forms and is not limited to the embodiments described herein.

[0029] In the description of this application, reference to the terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of this application. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine and integrate different embodiments or examples described in this application, as well as features of different embodiments or examples, unless otherwise contradictory.

[0030] Furthermore, the terms "first" and "second" are used solely to indicate a target and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the context of this application, "plurality" means two or more, unless otherwise specifically defined.

[0031] Throughout this specification, when a device is said to be "connected" to another device, this includes not only "direct connection" but also "indirect connection" with other elements interposed therebetween. Furthermore, when a device is said to "include" a certain component, unless otherwise stated, this does not exclude the inclusion of other components but rather implies that the device may include other components.

[0032] The following is combined with Figure 1 -Attached Figure 7 , further details of this application are given.

[0033] The embodiment of the present application discloses a baking furnace for producing polarizers.

[0034] A baking oven for polarizer production, reference Figure 1 As shown, it includes a furnace body 1; the furnace body 1 is a cylindrical structure, or a truncated cone structure, with a controller on the outside, and an air pressure structure 11, a driving structure 12, a baking structure 13 and a baking channel 14 on the inside. The baking channel 14 is provided with a loading port 15 to provide access to the polarizer. An opening and closing door is provided on the outside of the furnace body 1, and a driving element such as a cylinder can be set to provide closing of the opening and closing door, and the opening and closing door can close the loading port 15.

[0035] The baking structure 13 provides high temperature baking and can use energy such as natural gas, coal, hot steam, etc. to provide the baking effect.

[0036] The turntable positioning fixture 2 is arranged in a ring shape around the furnace body 1 and passes through the baking channel 14 .

[0037] The turntable positioning tooling 2 includes a turntable frame 21 and several tooling plates 22; the turntable frame 21 is connected to the driving structure 12, and the driving structure 12 provides a driving force for the turntable frame 21 to rotate along the furnace body 1, so that the turntable frame 21 rotates between the baking channel 14 and the loading port 15.

[0038] An air pressure channel 211 is provided inside the turntable frame 21 . The air pressure channel 211 is connected to the air pressure structure 11 . The air pressure structure 11 provides air pressure changes in the air pressure channel 211 inside the turntable frame 21 .

[0039] The surface of the tooling tray 22 is an inwardly concave arc surface, and the arc surface style is the curved arc surface required for polarizer molding. The resin material of the polarizer is placed on the arc surface of the tooling tray 22, and a vent hole 221 is opened on the bottom surface of the arc surface.

[0040] The tooling tray 22 is connected to the air pressure channel 211 via the vent 221, so that when the air pressure structure 11 draws air to provide vacuum negative pressure, the vent 221 generates suction, thereby adsorbing the resin raw material on the curved surface of the tooling tray 22 until it is baked by the baking structure 13 and bent into shape along the curved surface. Under the suction of the negative pressure, the resin raw material always adheres to the curved surface, ensuring that the pattern of the molded polarizer is accurate.

[0041] The lifting valve 3 is installed on the turntable frame 21. The lifting valve 3 is used to close or open the air pressure channel 211. Specifically, a lifting port is opened on the turntable frame 21, and the lifting port is connected to the air pressure channel 211. The lifting valve 3 is located in the lifting port, so that the lifting valve 3 is connected to the air pressure channel 211. The lifting valve 3 is provided with a connecting port. When the connecting port moves to the air pressure channel 211, the air pressure channel 211 is in an open state. When the connecting port and the air pressure channel 211 are staggered, the air pressure channel 211 is closed with the lifting valve 3, thereby closing the air pressure channel 211.

[0042] The closing cylinder 4 is installed on the furnace body 1 and is located at the loading port 15. It is used to close the lifting valve 3. When the lifting valve 3 moves to the closing cylinder 4 along with the turntable frame 21, the driving end of the closing cylinder 4 pushes the lifting valve 3, so that the lifting valve 3 closes the air pressure channel 211. The air pressure structure 11 cannot provide negative pressure, and the tooling disk 22 loses the negative pressure supply and releases the molded polarizer, so that the worker can pick up the polarizer from the surface of the tooling disk 22 for recycling, or put in new resin raw materials.

[0043] The conducting cylinder 5 is installed on the furnace body 1 and is located at the loading port 15, close to the channel opening of the baking channel 14. It is used to open the lifting valve 3 to provide conduction of the air pressure channel 211. When the lifting valve 3 rotates to the conducting cylinder 5 along with the turntable frame 21, it pushes the connecting port of the lifting valve 3 to the air pressure channel 211, so that the air pressure channel 211 is connected to the air pressure structure 11, and the air pressure structure 11 continues to provide negative pressure.

[0044] The closing cylinder 4 and the conducting cylinder 5 can both be pneumatic cylinders or electric push rods.

[0045] Specifically, the resin raw material before the polarizer is formed is provided to the loading port 15 and placed on the tooling tray 22. After the furnace body 1 is closed, the baking structure 13 heats and bakes the baking channel 14. At the same time, the driving structure 12 drives the turntable positioning tooling 2 to rotate along the baking channel 14. During the rotation, the air pressure structure 11 provides negative pressure to the vents 221 on the tooling tray 22 through the air pressure channel 211, so that the resin raw material is adsorbed on the curved surface. After the turntable positioning tooling 2 is driven by the driving structure 12 to rotate along the furnace body 1 to the baking channel 14, the resin raw material is softened and bent by the baking effect. During the bending process, it is bent to conform to the curved surface by the negative pressure, thereby forming a qualified curved polarizer. After the polarizer is bent and formed, the tooling tray 22 enters the loading port 15, and the closing cylinder 4 drives the lifting valve 3 to close the air pressure channel 211. The tooling tray 22 loses its negative pressure effect, and the worker can remove the formed polarizer from the tooling tray 22 and put in the next group of resin raw materials. The lifting valve 3 moves to the conducting cylinder 5, and the conducting cylinder 5 drives the lifting valve 3 to open the air pressure channel 211, so that the resin raw material continues to be subjected to the negative pressure and adheres to the curved surface of the tooling tray 22, and enters the baking channel 14 for baking and forming.

[0046] For further reference, Figure 2 As shown, there are several turntable racks 21, and each turntable rack 21 is provided with a lifting valve 3. By providing a lifting valve 3 for each turntable rack 21, a single lifting valve 3 provides the opening and closing of the air pressure channel 211 in a single turntable rack 21, so that when it is necessary to take out the molded polarizer from the tooling tray 22 or store the resin raw materials separately, the closing cylinder 4 and the conducting cylinder 5 can be used to separately control the corresponding lifting valve 3, without affecting the negative pressure state of the turntable rack 21 in other baking channels 14 and the lifting valve 3, thereby achieving the purpose of separate storage.

[0047] In some embodiments, reference Figure 2 As shown, the driving structure 12 includes a driving member 121, an annular slide rail 122 and a pivot ring 123; the pivot ring 123 is slidably connected to the annular slide rail 122, and the annular slide rail 122 bypasses the baking channel 14. When the pivot ring 123 slides along the annular slide rail 122, it can rotate along the baking channel 14, and each group of turntable racks 21 is connected to the pivot ring 123, so that the turntable rack 21 can follow the pivot ring 123 to enter the baking channel 14 or rotate from the baking channel 14 to the loading port 15, so as to recycle the molded polarizer on the tooling tray 22 or place new resin raw materials.

[0048] The driving member 121 is installed on the furnace body 1 at the loading port 15 and is connected to the pivot ring 123 to provide a driving force for the pivot ring 123 to rotate.

[0049] Specifically, the driving member 121 can drive the pivot ring 123 to rotate along the annular slide rail 122. The annular slide rail 122 provides load-bearing for the pivot ring 123 and the turntable positioning tooling 2, so that several turntable racks 21 and tooling plates 22 can all enter the baking channel 14 stably in turn for baking, or rotate out of the baking channel 14 to the loading port 15 for loading and unloading.

[0050] For further reference, Figure 2 As shown, the driving member 121 includes a driving motor 1211 and a gear 1212; the driving motor 1211 is connected to the furnace body 1 and is located at a position corresponding to the loading port 15 of the furnace body 1, so as to avoid being affected by the baking effect in the baking channel 14. The gear 1212 is connected to the driving end of the driving motor 1211, that is, the driving motor 1211 can drive the gear 1212 to rotate.

[0051] The pivot ring 123 is provided with meshing teeth along its annular surface, and meshes with the gear 1212 through the meshing teeth, so that when the driving motor 1211 drives the gear 1212 to rotate, the pivot ring 123 is driven to rotate through the gear 1212 and the meshing teeth.

[0052] The meshing teeth can be arranged along the inner wall of the pivot ring 123 or along the outer wall of the pivot ring 123 . The specific style of the pivot ring 123 is determined according to the installation position of the drive motor 1211 .

[0053] Specifically, the driving motor 1211 drives the pivot ring 123 to rotate along the annular slide rail 122 through the gear 1212, so as to drive the turntable frame 21 to rotate from the baking channel 14 in turn. The meshing teeth and the gear 1212 engage with each other to provide a stable driving effect, ensuring the stability of the driving effect and the accuracy of the driving speed.

[0054] The driving speed of the driving motor 1211 is determined by the background controller, and is also determined by the meshing teeth, the size and number of teeth of the gear 1212, so it is not limited here.

[0055] The driving motor 1211 is intermittently driven, that is, it stops for a preset time after driving for a unit time or driving a number of circles, and then continues to drive, and so on. This method can reserve enough time for workers to load the polarizer.

[0056] On the other hand, reference Figure 3As shown, the driving motor 1211 can also directly use a connecting frame to connect with the pivot ring 123 via the connecting frame. This method can also achieve the driving effect, but in this method, when the driving motor 1211 rotates one circle, the pivot ring 123 will follow and rotate one circle, which makes it difficult to adjust or adapt the driving speed of the driving motor 1211. By using the gear 1212, the diameter or number of teeth of the gear 1212 can be changed so that the driving motor 1211 drives the gear 1212 for several circles before the pivot ring 123 rotates one circle. Therefore, the implementation method of the gear 1212 is more convenient for fine-tuning the rotation speed of the pivot ring 123.

[0057] In some embodiments, reference Figure 4 As shown, the baking channel 14 includes a channel outlet 141 and a channel inlet 142. Both the channel outlet 141 and the channel inlet 142 are provided with an induction member 143. The induction member 143 is electrically connected to the closing cylinder 4 or the conducting cylinder 5. The induction member 143 of the channel outlet 141 is electrically connected to the closing cylinder 4, and the induction member 143 of the channel inlet 142 is electrically connected to the conducting cylinder 5. The electrical connection method can be a wired circuit connection or a wireless electrical signal connection.

[0058] When the tooling tray 22 rotates out of the channel outlet 141, the sensor 143 senses it and sends a closing command to the closing cylinder 4. The closing cylinder 4 will drive the lifting valve 3 to close the air pressure channel 211, so that the negative pressure state ends. The worker at the loading port 15 can take out the polarizer or put in new resin raw materials.

[0059] When the tooling disk 22 rotates to the channel entrance 142 , the sensor 143 senses the position of the tooling disk 22 and sends a conduction instruction to the conduction cylinder 5 , which drives the lifting valve 3 to open the air pressure channel 211 .

[0060] By utilizing the sensing effect of the sensing element 143 , the negative pressure state on the tooling tray 22 can be changed more stably and accurately, making it easier to store or remove the polarizer, or allowing the negative pressure to be applied more accurately.

[0061] The sensing element 143 may be an infrared sensor or a photoelectric sensor.

[0062] The induction element 143 can also send an electrical signal to the background controller, which then determines whether the signal is correct and sends a control instruction to the closing cylinder 4 or the conducting cylinder 5 .

[0063] In some embodiments, reference Figure 2 and Figure 5 As shown, when a plurality of turntable racks 21 are provided, a plurality of pneumatic structures 11 are provided, and each turntable rack 21 is independently provided with a group of pneumatic structures 11 .

[0064] The pneumatic structure 11 includes an air pressure cylinder 111, a piston member 112 and a driving part 113; the interior of the air pressure cylinder 111 is a piston cavity, and a negative pressure port 1111 and a positive pressure port 1112 are respectively opened on both sides. The negative pressure port 1111 and the positive pressure port 1112 are both connected to the piston cavity. The air pressure cylinder 111 is installed on the turntable frame 21, so that when the turntable frame 21 rotates, the air pressure cylinder 111 will also rotate with the turntable frame 21.

[0065] The negative pressure port 1111 is connected to the air pressure channel 211, so that when negative pressure is formed in the air pressure cylinder 111, the negative pressure can be applied to the resin raw material on the tooling disk 22 through the negative pressure port 1111 and the air pressure channel 211. The piston member 112 is located in the piston cavity and slides along the inner wall of the piston cavity. According to the sliding of the piston member 112, the air pressure in the air pressure cylinder 111 is changed to form negative pressure, and the positive pressure port 1112 provides exhaust.

[0066] The driving part 113 is connected to the pneumatic cylinder 111, and the driving end is connected to the piston member 112, providing driving force for the sliding of the piston member 112. The driving part 113 can adopt an electric push rod, a cylinder or an electromagnetic rail. If it is an electromagnetic rail, the pneumatic structure 11 is a magnetic coupling rodless cylinder, that is, the piston member 112 is provided with an electromagnetic adsorption material, and the electromagnetic rail is installed on the outside of the pneumatic cylinder 111, and uses electromagnetic attraction to drive the piston member 112 to move in the pneumatic cylinder 111 without a rod.

[0067] Specifically, the driving part 113 drives the piston part 112 to move along the piston cavity. During the movement, air is extracted through the negative pressure port 1111, so that negative pressure is formed in the air pressure channel 211. The air vent generates negative pressure suction to suck the resin raw material. When the piston part 112 moves toward the negative pressure port 1111, positive pressure is generated in the piston cavity, or the lifting valve 3 is driven by the closing cylinder 4 to close the air pressure channel 211. At this time, the air vent loses the negative pressure supply, loosening the resin raw material or the molded polarizer.

[0068] In some embodiments, reference Figure 5 and Figure 6 As shown, the pneumatic structure 11 also includes a sealing cylinder 114, an air supply pipe 116, a sealing portion 115 and an elastic portion 117; the sealing cylinder 114 is installed on the outer wall of the tooling disk 22, and the cylinder mouth of the sealing cylinder 114 is located on the top surface of the tooling disk 22. Each tooling disk 22 is provided with at least one set of sealing cylinders 114, and the cylinder mouth of the sealing cylinder 114 is horizontally facing the tooling disk 22.

[0069] The sealing part 115 is plugged into the sealing tube 114, one end of the elastic part 117 is connected to the sealing part 115, and the other end is connected to the inner wall of the sealing tube 114, providing elastic force for the sealing part 115 to reset. The sealing part 115 can adopt a sealing piston, and the sealing piston is affected by the air pressure and will move along the sealing tube 114 and extend out of the sealing tube 114 and move toward the tooling disk 22. After the influence of the air pressure is lost, the sealing piston will be retracted into the sealing tube 114 through the elastic part 117 to provide a reset function.

[0070] The end of the air pressure cylinder 111 away from the negative pressure port 1111 is the positive pressure port 1112. One end of the air supply pipe 116 is connected to the sealing cylinder 114, and the other end is connected to the positive pressure port 1112 of the air pressure cylinder 111. When the piston 112 provides negative pressure to the negative pressure port 1111, it also provides positive pressure to the positive pressure port 1112. Specifically, when the piston 112 is driven by the driving part 113 and moves toward the positive pressure port 1112, the gas is squeezed toward the positive pressure port 1112, and the gas enters the sealing cylinder 114 through the gas pipe 116, and pushes the sealing part 115 to move toward the tooling disk 22. The negative pressure port 1111 is affected by the suction, and the vent 221 generates a negative pressure to adsorb the resin raw material, and the sealing part 115 extends out of the air pressure cylinder 111 and blocks the top surface of the tooling disk 22, thereby confining the resin raw material in the tooling disk 22, preventing the resin raw material from bending during baking and lifting the corners, resulting in separation from the tooling disk 22 or position displacement, thereby improving the accuracy of the polarizer baking molding.

[0071] For further reference, Figure 6 As shown, the portion of the sealing portion 115 located outside the sealing tube 114 is provided with a fitting plate, which is arc-shaped and fits with the outer wall of the tooling disk 22, so that when the sealing portion 115 moves toward the tooling disk 22, it can drive the fitting plate to move, thereby increasing the area of ​​blocking the polarizer or resin raw material, and further increasing the stability of the polarizer during baking.

[0072] Furthermore, the pneumatic structure 11 is connected to the pivot ring 123 and rotates along the annular slide rail 122 following the pivot ring 123, so that when the turntable positioning tool 2 rotates, the pneumatic structure 11 will not be interfered with and can rotate synchronously, thereby improving adaptability.

[0073] Furthermore, the baking range of the baking structure 13 is within the baking channel 14, and the loading port 15 is not within the baking range, so that the electrical components such as the closing cylinder 4, the conducting cylinder 5, the driving part 113, and the driving structure 12 are all within the installation range of the loading port 15, and will not be affected by the high temperature of the baking range of the baking channel 14, thereby improving the service life of the equipment.

[0074] In some embodiments, reference Figure 7As shown, a heat insulating cover 6 is provided outside the furnace body 1 , which can cover the furnace body 1 to prevent heat from leaking out or affecting external workers, thereby making the working environment safer.

[0075] The examples of this specific embodiment are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, any equivalent changes made based on the structure, shape, and principle of this application should be included in the scope of protection of this application.

Claims

1. A baking furnace for producing polarizers, characterized in that: The invention comprises a furnace body (1); the furnace body (1) is provided with a gas pressure structure (11), a driving structure (12), a baking structure (13) and a baking channel (14); the baking channel (14) is provided with a loading port (15) for storing and accessing a polarizing filter; A turntable positioning tool (2) is arranged along the furnace body (1) and passes through the baking channel (14); it comprises a turntable frame (21) and a plurality of tooling plates (22); the turntable frame (21) is connected to the driving structure (12), and the driving structure (12) provides rotation of the turntable frame (21); a gas pressure channel (211) is provided inside the turntable frame (21), and the gas pressure channel (211) is connected to the gas pressure structure (11); the surface of the tooling plate (22) is an inwardly concave arc surface, and a ventilation hole (221) is provided on the bottom surface of the arc surface, and the ventilation hole (221) is connected to the gas pressure channel (211); A lifting valve (3) mounted on the turntable frame (21) and in communication with the air pressure channel (211); A closing cylinder (4), installed on the furnace body (1) and located at the loading port (15), and used for closing the lifting valve (3); A conduction cylinder (5) is installed on the furnace body (1) and is located at the loading port (15) and close to the channel opening of the baking channel (14), and is used to open the lifting valve (3) to provide conduction for the air pressure channel (211).

2. A baking furnace for producing polarizers according to claim 1, characterized in that: A plurality of the turntable frames (21) are provided, and each of the turntable frames (21) is provided with a lifting valve (3).

3. A baking furnace for producing polarizers according to claim 1, characterized in that: The driving structure (12) comprises a driving member (121), an annular slide rail (122) and a pivot ring (123); the pivot ring (123) is slidably connected to the annular slide rail (122); each group of the turntable frames (21) is connected to the pivot ring (123); the driving member (121) is installed on the furnace body (1), located at the loading port (15), and is connected to the pivot ring (123) to provide a driving force for the pivot ring (123) to rotate.

4. A baking furnace for producing polarizers according to claim 3, characterized in that: The driving member (121) comprises a driving motor (1211) and a gear (1212); the driving motor (1211) is connected to the furnace body (1), and the gear (1212) is connected to the driving end of the driving motor (1211); the pivot ring (123) is provided with meshing teeth along an annular surface, and meshes with the gear (1212) via the meshing teeth.

5. The baking oven for producing polarizers according to claim 1, characterized in that: The baking channel (14) comprises a channel outlet (141) and a channel inlet (142), and both the channel outlet (141) and the channel inlet (142) are provided with a sensing element (143), and the sensing element (143) is electrically connected to the closing cylinder (4) or the conducting cylinder (5).

6. The baking oven for producing polarizers according to claim 1, characterized in that: The air pressure structure (11) comprises an air pressure cylinder (111), a piston member (112) and a driving unit (113); the air pressure cylinder (111) contains a piston cavity, and is provided with a negative pressure port (1111) and a positive pressure port (1112) on both sides, and the negative pressure port (1111) and the positive pressure port (1112) are both connected to the piston cavity; the negative pressure port (1111) is connected to the air pressure channel (211); the piston member (112) is located in the piston cavity and slides along the inner wall of the piston cavity; the driving unit (113) is connected to the air pressure cylinder (111), and the driving end is connected to the piston member (112), so as to provide a driving force for the piston member (112) to slide.

7. A baking oven for producing polarizers according to claim 6, characterized in that: The air pressure structure (11) further comprises a sealing cylinder (114), an air supply pipe (116), a sealing portion (115) and an elastic portion (117); the sealing cylinder (114) is mounted on the outer wall of the tooling disk (22), and the cylinder mouth of the sealing cylinder (114) is located on the top surface of the tooling disk (22); the sealing portion (115) is plugged into the sealing cylinder (114); one end of the elastic portion (117) is connected to the sealing portion (115), and the other end is connected to the inner wall of the sealing cylinder (114), so as to provide elastic force for resetting the sealing portion (115); one end of the air supply pipe (116) is connected to the sealing cylinder (114), and the other end is connected to the positive pressure port (1112); when the piston member (112) provides negative pressure to the negative pressure port (1111), it simultaneously provides positive pressure to the positive pressure port (1112).

8. The baking oven for producing polarizers according to claim 3, characterized in that: The pneumatic structure (11) is connected to the pivot ring (123) and rotates along the annular slide rail (122) following the pivot ring (123).

9. The baking oven for producing polarizers according to claim 1, characterized in that: The baking range of the baking structure (13) is within the baking channel (14), and the loading port (15) is not within the baking range.

10. The baking oven for producing polarizers according to claim 1, characterized in that: A heat insulation cover (6) is also provided outside the furnace body (1).

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