PVB (polyvinyl butyral) film filament distribution device and method

Abstract

The invention discloses a PVB film wire distributing device and method, and relates to the technical field of PVB film machining, the PVB film wire distributing device comprises a main body arranged on a workbench and a wire feeding mechanism arranged on the main body and used for conveying tungsten wires, the main body is further provided with a pressing wheel and a heating mechanism, and the pressing wheel is rotationally connected to the main body and used for forcing the tungsten wires to be embedded into a PVB film; the heating mechanism is used for heating the pressing wheel, and in the process that the pressing wheel forces the tungsten filament to be embedded into the PVB film, the pressing wheel heats the PVB film. According to the PVB film wire distribution device and method, when the main body is close to the PVB film, a tungsten wire can be forced to be embedded into the PVB film through the pressing wheel, in the moving process of the main body, the pressing wheel can move on the PVB film and distribute the tungsten wire, in the tungsten wire distribution process, the pressing wheel can heat the PVB film so as to reduce the hardness of the PVB film, and the PVB film is prevented from being damaged. Therefore, the difficulty that the tungsten filament is embedded into the PVB film is reduced, the pressing wheel can keep small pressure so that the tungsten filament can be tightly embedded into the PVB film, and the filament distribution efficiency is further improved.

Description

Technical Field

[0001] This invention relates to the field of PVB film processing technology, specifically to a PVB film fiber-laying device and method. Background Technology

[0002] The wire-laying mechanism can move along the X, Y, and Z axes on the worktable to lay rectangular, trapezoidal, and other geometric shapes of wire heating wires (tungsten wires) on the PVB film. The PVB film produced in this way can be applied to laminated glass to achieve the function of heating and defogging.

[0003] For example, the patent document with application publication number CN117183362A, application publication date December 8, 2023, and title "A PVB membrane fiber laying device" has a machine base and a negative pressure platform, an X-axis linear module, a Y-axis linear module and a fiber laying head. The fiber laying head can automatically embed tungsten wires on the PVB membrane and arrange the tungsten wires into the PVB membrane.

[0004] In existing technologies, tungsten wires are typically embedded into the PVB membrane using a pressure structure. Obviously, in this wire-laying method, if the downward pressure is high, the tungsten wires can be tightly embedded into the PVB membrane, but the PVB membrane may be damaged by the pressure. If the downward pressure is low, the PVB membrane is less affected, but the depth to which the tungsten wires are embedded in the PVB membrane is shallow, affecting the stability of the tungsten wires. Summary of the Invention

[0005] The purpose of this invention is to provide a PVB membrane fabrication device and method to overcome the above-mentioned shortcomings in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A PVB membrane filament feeding device includes a main body mounted on a worktable and a filament feeding mechanism mounted on the main body for conveying tungsten filaments. The main body is further provided with:

[0008] Pressure rollers are used to force tungsten wires to embed into the PVB film;

[0009] A heating mechanism, rotatably connected to the main body and used to heat a pressure roller that heats the PVB film during the process of the pressure roller forcing a tungsten filament into the PVB film.

[0010] The above-mentioned PVB membrane fabric filament device includes a filament feeding mechanism comprising a tensioning component and a guide tube.

[0011] In the aforementioned PVB membrane fabrication device, the pressure roller has a groove.

[0012] In the aforementioned PVB membrane filament device, an auxiliary wheel is rotatably connected to the main body, and the auxiliary wheel and the pressure wheel are located on both sides of the tungsten wire, respectively.

[0013] In the aforementioned PVB membrane fabrication device, the auxiliary wheel has a groove.

[0014] The above-mentioned PVB membrane fabrication device has a preheating wheel rotatably connected to the main body, and the heating mechanism is provided with two sets to heat the pressure wheel and the preheating wheel respectively. The preheating wheel is drivenly connected to the auxiliary wheel, and the bottom end of the preheating wheel and the bottom end of the pressure wheel are at the same height.

[0015] In the aforementioned PVB film filament feeding device, the preheating wheel and the pressure wheel rotate in the same direction when rolling on the PVB film, while the auxiliary wheel and the pressure wheel rotate in opposite directions to convey the tungsten wire to the bottom end of the pressure wheel.

[0016] In the aforementioned PVB membrane filament fabrication device, the tungsten wire has an elliptical cross-section after being conveyed by the auxiliary roller and the pressure roller.

[0017] In the aforementioned PVB membrane fabrication device, a raised ring is constructed in the groove of the auxiliary wheel, and the cross-section of the raised ring is conical.

[0018] A method for fabricating PVB membrane fibers, based on any of the above-mentioned PVB membrane fiber fabrication devices, wherein when a pressure roller forces a tungsten wire to embed into the PVB membrane, a heating mechanism heats the pressure roller to heat the PVB membrane.

[0019] In the above technical solution, the present invention provides a PVB film filament laying device and method. When the main body is close to the PVB film, the pressure roller can force the tungsten wire to embed into the PVB film. During the movement of the main body, the pressure roller can move on the PVB film and lay the tungsten wire. During the laying of the tungsten wire, the pressure roller can heat the PVB film to reduce the hardness of the PVB film, thereby reducing the difficulty of embedding the tungsten wire into the PVB film. This allows the pressure roller to maintain a small pressure and tightly embed the tungsten wire into the PVB film, further improving the filament laying efficiency. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0021] Figure 1 This is a schematic diagram of the overall structure provided for an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of a pressure roller structure provided in another embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of an auxiliary wheel structure provided in another embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of a preheating wheel structure provided in another embodiment of the present invention;

[0025] Figure 5 This is a schematic diagram of the structure of the second friction part provided in another embodiment of the present invention;

[0026] Figure 6 This is a schematic diagram of the structure of the first friction part provided in another embodiment of the present invention;

[0027] Figure 7 This is a schematic diagram of a slide bar structure provided in another embodiment of the present invention;

[0028] Figure 8 This is a schematic diagram of a slider structure provided in another embodiment of the present invention;

[0029] Figure 9 This is a schematic diagram of a cutter structure provided in another embodiment of the present invention;

[0030] Figure 10 This is a schematic diagram of a tungsten wire conveying path provided in another embodiment of the present invention;

[0031] Figure 11 This is a schematic diagram of a rotating shaft structure provided in another embodiment of the present invention;

[0032] Figure 12 This is a schematic diagram of a baffle structure provided for another embodiment of the present invention.

[0033] Explanation of reference numerals in the attached figures:

[0034] 1. Main body; 2. Tungsten wire; 3. Pressure roller; 4. Guide tube; 5. Auxiliary wheel; 6. Preheating wheel; 7. First friction part; 8. Second friction part; 9. Protruding ring; 10. Slider; 11. Spring; 12. Slide rod; 13. Extension part; 14. Cutter; 15. Rotating shaft; 16. First connecting rod; 17. First movable rod; 18. Arc block; 19. Trigger rod; 20. Baffle; 21. Second connecting rod; 22. Second movable rod; 23. Friction part. Detailed Implementation

[0035] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0036] Reference Figure 1-12This invention provides a PVB film fiber feeding device, including a main body 1 disposed on a workbench and a fiber feeding mechanism disposed on the main body 1 for feeding tungsten wires 2. The main body 1 is also provided with a pressure roller 3 and a heating mechanism. The pressure roller 3 is rotatably connected to the main body 1 and is used to force the tungsten wires 2 into the PVB film. The heating mechanism is used to heat the pressure roller 3. During the process of the pressure roller 3 forcing the tungsten wires 2 into the PVB film, the pressure roller 3 heats the PVB film.

[0037] Specifically, a three-axis robotic arm is installed on the workbench, which can drive the main body 1 to move on the workbench along the X, Y and Z axes; the wire feeding mechanism generally uses a tungsten wire 2 reel to stably transport the tungsten wire 2. All of the above are existing technologies and will not be elaborated here. The innovation of this invention lies in the fact that a pressure roller 3 and a heating mechanism are provided on the main body 1. The heating mechanism can be an existing electric heating wire structure (not shown), which is located inside the pressure roller 3 to heat the pressure roller 3. The preferred heating temperature range is 140℃-170℃. When laying the tungsten wire 2, the tungsten wire 2 is wound around to the bottom of the pressure roller 3, and then the main body 1 is lowered by a robotic arm so that the pressure roller 3 contacts the PVB film. Subsequently, the robotic arm drives the main body 1 to move in a plane, and the tungsten wire 2 is laid by the rolling of the pressure roller 3 (so that the tungsten wire 2 is embedded in the PVB film under the rolling pressure of the pressure roller 3). During the laying of the tungsten wire 2, the temperature on the pressure roller 3 can be transferred to the PVB film to reduce the hardness of the PVB film, thereby reducing the difficulty of embedding the tungsten wire 2 into the PVB film. This allows the pressure roller 3 to maintain a small pressure to tightly embed the tungsten wire 2 into the PVB film, further improving the wire laying efficiency.

[0038] In another embodiment of the present invention, the wire feeding mechanism further includes a tensioning component and a guide tube 4. Specifically, the guide tube 4 is located on one side of the pressure roller 3, and its interior is hollow to allow the tungsten wire 2 to pass through. The tensioning component is located between the tungsten wire 2 reel and the guide tube 4. The tensioning component can be an elastic tensioning structure or a gravity tensioning structure from the prior art, so that the tungsten wire 2 remains taut during the feeding process. When feeding the tungsten wire 2, the tungsten wire 2 extends from the tungsten wire 2 reel into the tensioning component, then passes through the guide tube 4, and finally extends to the bottom of the pressure roller 3 for laying. This arrangement allows the tungsten wire 2 to remain taut as much as possible during feeding, and avoids the wavy shape of the tungsten wire 2 when laid in a straight line.

[0039] Preferably, the pressure roller 3 has a groove. Specifically, the cross-section of the groove on the pressure roller 3 is basically semi-circular and adapted to the cross-section of the tungsten wire 2. When laying the tungsten wire 2, the groove can guide the tungsten wire 2. At the bottom of the pressure roller 3, half of the tungsten wire 2 is embedded in the PVB film, and the other half is embedded in the groove of the pressure roller 3, so that the pressure roller 3 can be in close contact with the PVB film, thereby improving the heat conduction efficiency and further improving the wire laying efficiency.

[0040] Furthermore, an auxiliary wheel 5 is rotatably connected to the main body 1, with the auxiliary wheel 5 and pressure wheel 3 located on opposite sides of the tungsten wire 2. The auxiliary wheel 5 has a groove. Specifically, the cross-section of the groove on the auxiliary wheel 5 is basically semi-circular and adapted to the cross-section of the tungsten wire 2. The auxiliary wheel 5 is located between the guide tube 4 and the pressure wheel 3. A motor structure can be installed on the main body 1 to drive the auxiliary wheel 5 to rotate. The rotation direction of the auxiliary wheel 5 is opposite to that of the pressure wheel 3. There is a certain gap between the auxiliary wheel 5 and the pressure wheel 3. When the tungsten wire 2 passes between them, the auxiliary wheel 5 rotates under the action of the motor structure, and the pressure wheel 3 rolls on the PVB film. This guides and conveys the tungsten wire 2, ensuring that the tungsten wire 2 is stably positioned within the groove of the pressure wheel 3, thereby maximizing the accuracy of the tungsten wire 2's placement.

[0041] In another embodiment of the present invention, as an alternative to the above-mentioned motor structure driving the auxiliary wheel 5 to rotate, preferably, a preheating wheel 6 is rotatably connected to the main body 1, and the heating mechanism is provided with two sets to heat the pressure wheel 3 and the preheating wheel 6 respectively. The preheating wheel 6 is connected to the auxiliary wheel 5 in a transmission manner, and the bottom end of the preheating wheel 6 and the bottom end of the pressure wheel 3 are at the same height. Specifically, the preheating wheel 6 is located on the side of the auxiliary wheel 5 away from the pressure wheel 3. The main body 1 has two rotating shafts, with the pressure wheel 3 and preheating wheel 6 rotatably connected to them respectively. Two sets of heating mechanisms are provided, each located within one of the two rotating shafts, to heat the pressure wheel 3 and preheating wheel 6 respectively. (The heating mechanism can rotate synchronously with the pressure wheel 3 or the auxiliary wheel 5 for heating, or it can rotate relative to the pressure wheel 3 or the auxiliary wheel 5 for heating; this is prior art and is not shown in the diagram, so it will not be elaborated here.) When the pressure wheel 3 contacts the PVB film, the preheating wheel 6 also contacts the PVB film. In the direction of the tungsten wire 2, the preheating wheel 6 is located in front of the pressure wheel 3, meaning that the preheating wheel 6 preheats the PVB film it passes through first, and then the pressure wheel 3 passes through again to preheat the PVB film. Heating and wire-insertion operation; the transmission connection between the preheating wheel 6 and the auxiliary wheel 5 can be a gear transmission structure in the prior art. Preferably, the preheating wheel 6 is provided with a first friction part 7, and the auxiliary wheel 5 is provided with a second friction part 8. The first friction part 7 and the second friction part 8 are frictionally driven to drive the auxiliary wheel 5 to rotate when the preheating wheel 6 rotates. The first friction part 7 and the second friction part 8 are correspondingly arranged and misaligned with the groove on the auxiliary wheel 5. The outer diameter of the first friction part 7 is basically the same as the outer diameter of the preheating wheel 6, and the outer diameter of the second friction part 8 is basically the same as the outer diameter of the auxiliary wheel 5. When the preheating wheel 6 rolls on the PVB film, the auxiliary wheel 5 can rotate synchronously and in the opposite direction with the preheating wheel 6. In this embodiment, the heating mechanism only heats the part of the preheating wheel 6 that corresponds to the groove, so as to avoid energy waste as much as possible.

[0042] In this configuration, the preheating wheel 6 and the pressure wheel 3 rotate in the same direction when rolling on the PVB film, while the auxiliary wheel 5 and the pressure wheel 3 rotate in opposite directions to convey the tungsten wire 2 to the bottom of the pressure wheel 3. The advantage is that after the heating mechanism heats the preheating wheel 6 and the pressure wheel 3, they roll sequentially on the PVB film, allowing the preheating wheel 6 to preheat the PVB film first, followed by secondary heating by the pressure wheel 3, further reducing the difficulty of embedding the tungsten wire 2 into the PVB film. Simultaneously, the preheating wheel 6 can drive the auxiliary wheel 5 while rolling on the PVB film, causing the auxiliary wheel 5 and the pressure wheel 3 to rotate in opposite directions. Since the preheating wheel 6 and the pressure wheel 3 have the same rolling stroke on the PVB film (for the process of linearly laying the tungsten wire 2), the auxiliary wheel 5 and the pressure wheel 3 convey the tungsten wire 2 at the same rate, thus enabling stable conveying and laying of the tungsten wire 2 without a power source.

[0043] In an optional embodiment, the tungsten wire 2, after being conveyed by the auxiliary wheel 5 and the pressure wheel 3, has an elliptical cross-section. Specifically, in the above embodiment, the auxiliary wheel 5 and the pressure wheel 3 slightly abut against the tungsten wire 2 to assist in conveying the tungsten wire 2 during rotation. In this embodiment, the depth of the grooves on the auxiliary wheel 5 and the pressure wheel 3 is reduced, so that the cross-section of the grooves is basically half an ellipse. This arrangement allows the auxiliary wheel 5 and the pressure wheel 3 to squeeze the tungsten wire 2, forcing the tungsten wire 2 to undergo slight deformation, making the cross-section of the tungsten wire 2 tend to be elliptical. The advantage of this arrangement is that when laying the tungsten wire 2, generally half of the tungsten wire 2 needs to be embedded in the PVB film. Obviously, if the cross-section of the tungsten wire 2 changes from circular to elliptical, the depth of the tungsten wire 2 embedded in the PVB film is slightly reduced, which can further reduce the difficulty of laying the wire.

[0044] In an optional embodiment, a raised ring 9 is constructed in the groove of the auxiliary wheel 5, and the cross-sectional structure of the raised ring 9 is conical. Specifically, because the cross-sectional structure of the raised ring 9 is conical (e.g. Figure 6 As shown in the figure, when the auxiliary wheel 5 and the pressure wheel 3 squeeze the tungsten wire 2, they can force the bottom wall of the tungsten wire 2 to tend to be an inverted "m" shape. Subsequently, when the tungsten wire 2 is embedded into the PVB film, the inverted "m" shaped bottom wall can improve the connection between the tungsten wire 2 and the PVB film, thereby improving the firmness of the tungsten wire 2. It can also increase the area of ​​the part of the tungsten wire 2 that is bonded to the PVB film, further improving the defogging ability of the PVB film and the laminated glass after the wire is laid.

[0045] In another embodiment of the present invention, as an alternative to the preheating wheel 6 being directly rotatably connected to the main body 1, a slider 10 is slidably connected to the main body 1, the preheating wheel 6 is rotatably connected to the slider 10, a spring 11 is provided on the main body 1 to force the slider 10 close to the PVB film, and a cutting mechanism is provided on the main body 1 to cut the tungsten wire 2 based on the sliding stroke of the slider 10. Specifically, the main body 1 has a movable groove, and the slider 10 has a sliding rod 12. The sliding rod 12 is slidably connected in the movable groove. The spring 11 is located in the movable groove, with one end fixed to the inner wall of the movable groove and the other end fixed to the end of the sliding rod 12. The spring 11 forces the slider 10 to approach the PVB film (that is, forces the slider 10 and the preheating wheel 6 to descend relative to the main body 1). When the main body 1 approaches the PVB film, the preheating wheel 6 first contacts the PVB film, so that the slider 10 overcomes the elastic force of the spring 11 and rises relative to the main body 1. The main body 1 stops moving when both the preheating wheel 6 and the pressure wheel 3 contact the PVB film. At this time, the spring 11 can also improve the adhesion between the preheating wheel 6 and the PVB film, further improving the preheating efficiency. The cutting mechanism can use existing technology. The combination of the linear drive structure and the cutter 14 during the procedure allows the cutting mechanism to control the operation of the cutter 14 based on the position of the slider 10 (the position of the slider 10 can be monitored by a position sensor to control the operation of the cutter 14, which is existing technology and will not be described in detail here). When both the preheating wheel 6 and the pressure wheel 3 are in contact with the PVB film, the slider 10 slides to the top of its sliding stroke (relative to the main body 1). At this time, the auxiliary wheel 5 and the pressure wheel 3 transport and lay the tungsten wire 2, and the cutter 14 does not run. After the tungsten wire 2 is laid, the main body 1 moves away from the PVB film, and the slider 10 descends relative to the main body 1. At this time, the linear drive structure controls the cutter 14 to approach the tungsten wire 2 to cut the tungsten wire 2, further improving the automation level of the laying device and eliminating the step of manually cutting the tungsten wire 2.

[0046] As an alternative to the above-mentioned linear drive structure that drives the cutter 14, the main body 1 is further provided with an extension 13, on which the cutter 14 is slidably connected. The end of the cutter 14 is constructed in an arc shape adapted to the groove, so as to cut the tungsten wire 2 in the groove of the pressure roller 3 when the cutter 14 approaches the pressure roller 3. The extension 13 is provided with a first sliding groove, and both the first sliding groove and the cutter 14 are arranged radially along the pressure roller 3. The cutter 14 is slidably connected in the first sliding groove. A rotating shaft 15 is rotatably connected to the extension 13. A first connecting rod 16 is constructed on the rotating shaft 15. A first through groove is constructed on the first connecting rod 16. A first movable rod 17 is constructed on the cutter 14. The first movable rod 17 is movably disposed in the first through groove. The rotating shaft 15 is based on the slider 10 (relative to the main body 1). The slider 10 rotates during its downward stroke, forcing the first movable rod 17 to move through the inner wall of the first through groove, thereby driving the cutter 14 closer to the pressure roller 3 and cutting the tungsten wire 2 in the groove; a linkage structure can be provided between the slider 10 and the rotating shaft 15 to drive the rotating shaft 15 to rotate when the slider 10 descends relative to the main body 1. Preferably, an arc-shaped block 18 is constructed on the slider 10, and a trigger rod 19 is constructed on the rotating shaft 15. The trigger rod 19 extends to the moving stroke of the arc-shaped block 18, and a torsion spring is provided between the extension 13 and the rotating shaft 15. The torsion spring can force the trigger rod 19 on the rotating shaft 15 to approach the arc-shaped block 18. When the slider 10 rises relative to the main body 1, the trigger rod 19 abuts against the arc-shaped surface at the bottom of the arc-shaped block 18. At this time, the cutter 14 is at the end of the first groove away from the pressure roller 3 (e.g., Figure 8 As shown); when the slider 10 descends relative to the main body 1, the arc-shaped surface at the bottom of the arc-shaped block 18 can abut against the trigger rod 19, forcing the rotating shaft 15 to rotate against the spring force of the torsion spring. This causes the cutter 14 to move closer to the pressure roller 3 via the first connecting rod 16. Once the trigger rod 19 abuts against the side wall of the arc-shaped block 18, the arc-shaped block 18 continues to move without causing the rotating shaft 15 to rotate. At this point, the cutter 14 moves to the end of the first groove near the pressure roller 3, and the end of the cutter 14 is embedded in the groove to cut the tungsten wire 2 (as shown). Figure 9 (As shown).

[0047] In this embodiment, the length of the trigger rod 19 is greater than the length of the first connecting rod 16. When the main body 1 is away from the PVB film, the slider 10 descends relative to the main body 1 under the action of the spring 11. At the beginning of the descending stroke of the slider 10, the trigger rod 19 can be forced to rotate by the arc block 18, so as to drive the cutter 14 to approach the groove of the pressure roller 3 through the first connecting rod 16, until the trigger rod 19 touches the side wall of the arc block 18, and the cutter 14 is completely embedded in the groove of the pressure roller 3 to cut the tungsten wire 2. When the main body 1 approaches the PVB film again, the slider 10 rises relative to the main body 1, and the trigger rod 19 can be reset under the action of the torsion spring and touch the bottom end of the arc block 18. The advantage of this setup is that the lever structure between the trigger rod 19 and the first connecting rod 16 can amplify the elastic force of the spring 11 and reflect it onto the cutter 14, so that the cutter 14 can be driven to cut the tungsten wire 2 at the beginning of the stroke when the slider 10 descends relative to the main body 1 (the diameter of the tungsten wire 2 is small, and the elastic force of the spring 11 amplified by the lever structure is sufficient to cut the tungsten wire 2). That is, after the tungsten wire 2 is laid, the tungsten wire 2 can be passively cut at the beginning of the stroke when the main body 1 moves away from the PVB film, thus minimizing the waste of the tungsten wire 2. The tungsten wire 2 at the bottom of the pressure roller 3 has been laid, and the distance between the bottom of the pressure roller 3 and the cutter 14 is short. The tungsten wire 2 is cut by the cutter 14 at the beginning of the stroke when the main body 1 moves away from the PVB film, thus reducing the residue of the tungsten wire 2 after laying.

[0048] Furthermore, a baffle 20 is slidably connected to the extension 13. The baffle 20 has a U-shaped cross-section and is perpendicular to the cutter 14. When the cutter 14 moves away from the pressure roller 3, the baffle 20 slides between the cutter 14 and the pressure roller 3. When the cutter 14 cuts the tungsten wire 2, the baffle 20 moves away from the cutter 14. A second sliding groove is constructed on the extension 13, and the baffle 20 is slidably connected in the second sliding groove. The baffle 20 has a U-shaped cross-section, with its opening side facing the pressure roller 3. After the tungsten wire 2 passes between the auxiliary wheel 5 and the pressure roller 3, the U-shaped baffle 2 can receive and guide the tungsten wire 2. A linear drive structure can be provided on the extension 13 to drive the baffle 20. Preferably, a second connecting rod 21 is constructed on the rotating shaft 15, a second movable rod 22 is constructed on the second connecting rod 21, and a second through groove is constructed on the baffle 20. The second movable rod 22 is movably disposed in the second through groove. The advantage of this arrangement is that when the rotating shaft 15 drives the cutter 14 away from the pressure roller 3 via the first connecting rod 16, it can also drive the baffle 20 closer to the cutter 14 via the second connecting rod 21, so that the baffle 20 is positioned between the cutter 14 and the pressure roller 3 (e.g., Figure 10 As shown, a gap is left between the two to minimize interference. This is to prevent the tungsten wire 2 from contacting the side wall of the cutter 14 during transport, as this would affect the transport and placement of the tungsten wire 2. When the rotating shaft 15 drives the cutter 14 closer to the pressure roller 3 to cut the tungsten wire 2, the second connecting rod 21 can also move the baffle 20 away from the cutter 14 (as shown). Figure 11As shown in the figure, try to avoid the baffle 20 affecting the cutting operation of the cutter 14.

[0049] The baffle 20 has a friction part 23 at one end near the auxiliary wheel 5. When the cutter 14 touches the inner wall of the groove on the pressure wheel 3 to cut the tungsten wire 2, the friction part 23 touches the outer wall of the auxiliary wheel 5. In this way, the cutter 14 and the friction part 23 can brake the pressure wheel 3 and the auxiliary wheel 5 to a certain extent, so as to avoid the auxiliary wheel 5 and the pressure wheel 3 from rotating freely after the auxiliary tungsten wire 2 is cut. Especially when a tensioning component is provided on the main body 1, the tungsten wire 2 is easily pulled and detached from the auxiliary wheel 5 and the pressure wheel 3.

[0050] The present invention also provides a method for fabricating PVB film fibers, which is based on the fiber fabrication device described in any of the above claims. When the tungsten wire 2 is forced into the PVB film by the pressure roller 3, the pressure roller 3 is heated by a heating mechanism to heat the PVB film by the pressure roller 3.

[0051] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A PVB membrane filament feeding device, comprising a main body disposed on a worktable and a filament feeding mechanism disposed on the main body for conveying tungsten filaments, characterized in that, The main body is also provided with: Pressure rollers are used to force tungsten wires to embed into the PVB film; A heating mechanism, rotatably connected to the main body and used to heat a pressure roller that heats the PVB film during the process of the pressure roller forcing a tungsten filament into the PVB film.

2. The PVB membrane fabrication device according to claim 1, characterized in that, The wire feeding mechanism includes a tensioning component and a guide tube.

3. The PVB membrane fabrication device according to claim 1, characterized in that, The pressure roller has grooves.

4. The PVB membrane fabrication device according to claim 3, characterized in that, An auxiliary wheel is rotatably connected to the main body, and the auxiliary wheel and the pressure wheel are located on both sides of the tungsten wire, respectively.

5. A PVB membrane fabrication device according to claim 4, characterized in that, The auxiliary wheel has grooves.

6. A PVB membrane fabrication device according to claim 4, characterized in that, A preheating wheel is rotatably connected to the main body. The heating mechanism is provided with two sets to heat the pressure wheel and the preheating wheel respectively. The preheating wheel is connected to the auxiliary wheel. The bottom end of the preheating wheel and the bottom end of the pressure wheel are at the same height.

7. A PVB membrane fabrication device according to claim 6, characterized in that, The preheating wheel and the pressure wheel rotate in the same direction as they roll on the PVB film, while the auxiliary wheel and the pressure wheel rotate in opposite directions to deliver the tungsten wire to the bottom of the pressure wheel.

8. A PVB membrane fabrication device according to claim 7, characterized in that, After being conveyed by the auxiliary wheel and the pressure wheel, the tungsten wire has an elliptical cross-section.

9. A PVB membrane fabrication device according to claim 7, characterized in that, The auxiliary wheel has a raised ring in its groove, and the cross-section of the raised ring is conical.

10. A method for fabricating PVB membrane fibers, based on the PVB membrane fiber fabrication apparatus according to any one of claims 1-9, characterized in that, When the tungsten wire is forced into the PVB film by the pressure roller, the pressure roller is heated by the heating mechanism to heat the PVB film through the pressure roller.

Images