High-transparency and high-weather-resistance PVB (polyvinyl butyral) intermediate film extrusion system capable of quickly switching production lines
Through the rotating components and lifting components driven by the servo motor, the rapid switching of the PVB intermediate film production line is achieved, which solves the problems of high costs, inconsistent material conveying and poor synchronization capabilities in the prior art, and ensures the efficient switching of the production line and the consistency of the extrusion effect.
Patent Information
- Application Number
- CN202510561280.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-30
- Publication Date
- 2025-07-04
AI Technical Summary
The existing PVB intermediate film production lines have problems such as high cost, inconsistent material conveying efficiency and poor synchronization capabilities when switching production lines. Especially in the dual extruder structural design, the motor and the push screw are prone to be misaligned.
The rotating components and lifting components driven by servo motor are used to achieve 180° flip of the cylinder through the cooperation of gears and pushing screws, and different production lines are connected through flanges. Combined with the control of pushing screws and electric pushing rods, the positions of pushing screws are exchanged and synchronously transmitted.
It realizes rapid switching of production lines, avoiding the problems of high costs, inconsistent material conveying and poor synchronization capabilities, and ensuring the consistency of extrusion effect and the correct docking of the push screw.
Smart Images
Figure CN120245377A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of extrusion of high-transparency and high-weather resistance PVB interlayer films, and specifically to a high-transparency and high-weather resistance PVB interlayer film extrusion system capable of quickly switching production lines. Background Art
[0002] In recent years, in the domestic PVB interlayer film market, domestic PVB film sheets are mainly building film sheets. In addition to the daily production of transparent film sheets, there are also many orders for colored film sheets. Therefore, the production line often needs to switch back and forth between color and transparency. Especially when converting from a production line for colored film sheets to a production line for transparent film sheets, the existing PVB interlayer film extrusion device capable of quickly switching production lines includes a main extruder, a color material extruder, a distributor, and a die. The main extruder and the color material extruder are respectively connected to the input end of the same distributor through pipelines.
[0003] However, although it can achieve a simple and efficient production line switching method, its dual-extruder structure design results in a high cost. Moreover, it is very difficult to ensure the same distance from the two extruders to the production line during specific installation, which leads to inconsistent material conveying efficiency and affects the final extrusion effect. In addition, designing a dual-extruder structure requires a separate power source for each extrusion structure, resulting in a relatively high cost and poor rotational synchronization ability. At the same time, when using a single motor to drive two feeding screws, it is easy to cause misalignment of the docking structure between the motor and the feeding screws during the flipping process. Summary of the Invention
[0004] The purpose of the present invention is to solve the problems of the device, namely, its dual-extruder structure design results in a high cost. Moreover, it is very difficult to ensure the same distance from the two extruders to the production line during specific installation, which leads to inconsistent material conveying efficiency and affects the final extrusion effect. In addition, designing a dual-extruder structure requires a separate power source for each extrusion structure, resulting in a relatively high cost and poor rotational synchronization ability. At the same time, when using a single motor to drive two feeding screws, it is easy to cause misalignment of the docking structure between the motor and the feeding screws during the flipping process. Therefore, a high-transparency and high-weather resistance PVB interlayer film extrusion system capable of quickly switching production lines is proposed.
[0005] To achieve the above purpose, the present invention provides the following technical solutions: Design a high-transparency and high-weather resistance PVB interlayer film extrusion system capable of quickly switching production lines, including a bottom plate and a cylinder body. One side of the cylinder body is fixedly connected with an end plate. Both the upper and lower sides at the other end of the cylinder body are fixedly communicated with extrusion ports. A rotating assembly is arranged on the outer wall of the cylinder body. A lifting assembly is installed on the upper side of one end of the bottom plate. A rotating assembly is arranged on the inner wall of the cylinder body. Feed ports are processed on both the left and right sides of the front outer wall of the cylinder body.
[0006] Preferably, the rotating assembly includes a first gear and a collar. The inner walls of multiple collars are fixedly connected to the outer wall of the cylinder body. Both sides below the collar are in fitting connection with rollers. The outer walls of the rotating shafts of the rollers are rotationally connected to brackets through bearings. One side of the outer wall of the first gear is meshed and connected with a second gear. The outer walls of the rotating shafts of the second gears are rotationally connected to the vertical beams through bearings. Above the outer wall of one vertical beam, a first servo motor is fixedly connected. The end of the output shaft of the first servo motor is fixedly connected to the second gear.
[0007] Preferably, the lower ends of the vertical beams and the brackets are fixedly connected to the bottom plate.
[0008] Preferably, the lifting assembly includes a lifting platform. L-shaped plates are fixedly connected to the four corners of the lifting platform. The upper inner walls of the L-shaped plates are fixedly connected to the output shafts of electric push rods. On both sides of the upper end of the lifting platform, a speed reducer and a second servo motor are respectively fixedly connected. The output shaft of the second servo motor is fixedly connected to the input shaft of the speed reducer.
[0009] Preferably, the lower parts of the main bodies of multiple electric push rods are fixedly connected to the bottom plate.
[0010] Preferably, the rotating assembly includes a feeding screw and a card slot. Multiple feeding screws are respectively located in the inner cavity of the upper and lower inner walls of the cylinder body. The front outer walls of the rotating parts of multiple feeding screws are rotationally connected to the end plates through bearings. Ear plates are fixedly connected to the front sides of the outer walls of multiple feeding screws. Convex blocks are processed at the front ends of multiple feeding screws. The card slot is processed on the end face of the outer wall of the output shaft of the speed reducer.
[0011] Preferably, the inner wall of the end of the ear plate is fixedly connected to the end plate through bolts. The convex blocks and the card slots correspond to each other in the vertical direction.
[0012] Preferably, a flange is processed at the end of the outer wall of the extrusion port.
[0013] A high-transparency and high-weather-resistance PVB interlayer film extrusion system capable of quickly switching production lines proposed by the present invention has the beneficial effects that: Through the cooperation among the first servo motor, the feeding screw, the first gear, the second gear, the cylinder body, the extrusion port, the flange and the feeding port, the first servo motor drives the cylinder body to rotate 180° through the second gear and the first gear, so that the feeding screws at the upper and lower positions and the feeding ports at the left and right positions are interchanged. After the rotation, the specific position of the cylinder body is locked by the self-locking ability of the first servo motor. At this time, the inner cavity of the cylinder body that has already undergone one production process is rotated to the upper side, and the inner cavity of the unprocessed cylinder body is rotated to the lower side. Then, the extrusion port at the lower side is connected to the pipeline of the PVB intermediate film extrusion production line of another external production line through the flange. Then, by controlling the rotation of the lower feeding screw and feeding the granular raw materials required for another production line through the feeding port on the right side at this time, the extrusion production of the PVB intermediate film of another production line can be realized, effectively avoiding the problems in the comparative document that the use of a double-extruder structure design results in a high cost and it is difficult to ensure the same distance from the two extruders to the production line during specific installation, leading to inconsistent material conveying efficiency and affecting the final extrusion effect; Through the cooperation among the feeding screw, the electric push rod, the reducer, the second servo motor, the clamping groove and the convex block, the specific pushing process of the feeding screw can be controlled by continuously controlling the extension or retraction of the electric push rod. Before the cylinder body needs to be rotated, control the electric push rod to extend, so that the second servo motor and the reducer move upward, and the clamping groove is disengaged from the lower convex block. Stop after the second servo motor and the reducer move to approximately the central position of the cylinder body. Then, after the rotation of the cylinder body is completed, control the electric push rod again to lower the second servo motor and the reducer, and the clamping groove and the convex block are reinserted to achieve rotational transmission, effectively avoiding the problems that the design of a double-extruder structure requires a separate power source for each extrusion structure, resulting in a relatively high cost and poor rotational synchronization ability; Through the cooperation among the cylinder body, the feeding screw, the ear plate, the clamping groove and the convex block, before the cylinder body is rotated, the user can tighten the bolts at the specific ear plate of the lower feeding screw, and then release the insertion between the clamping groove and the convex block. At this time, the cylinder body rotates. Since the ear plates at both the upper and lower positions are in a bolt-connected state during the rotation process, there will be no position change. Until the rotation is completed and the clamping groove is reinserted with the lower convex block, then the bolts at the specific ear plate of the lower feeding screw at this time can be pulled out. In this way, the problem that the docking structure between the motor and the feeding screw is easily misaligned during the rotation process when a single motor drives two feeding screws is effectively avoided. Brief Description of the Drawings
[0014] Figure 1 It is a schematic front-side external structure diagram of the present invention; Figure 2 It is a schematic right-side external structure diagram of the present invention; Figure 3 It is a schematic rear-side external structure diagram of the present invention; Figure 4 For the present invention Figure 3 Schematic structural diagram of the lifting component in the present invention; Figure 5 For the present invention Figure 1 Schematic diagram of the partial sectional structure in the present invention; Figure 6 For the present invention Figure 5 Schematic diagram of the partial sectional structure in the present invention; Figure 7 For the present invention Figure 1 Schematic diagram of the right - hand sectional structure in the present invention; Figure 8 For the present invention Figure 3 Schematic diagram of the structure at position I in the present invention.
[0015] In the figure: 1, bottom plate; 2, cylinder body; 3, rotating component, 301, first gear, 302, second gear, 303, bracket, 304, roller, 305, collar, 306, first servo motor, 307, vertical beam; 4, lifting component, 401, reducer, 402, second servo motor, 403, lifting platform, 404, electric push rod, 405, L - shaped plate; 5, rotating component, 501, feeding screw, 502, convex block, 503, ear plate, 504, clamping groove; 6, end plate; 7, feeding port; 8, extrusion port; 9, flange. Specific implementation manner
[0016] The present invention will be further described below with reference to the accompanying drawings: Referring to the attached Figures 1-8 In this embodiment, a high - transparency and high - weather - resistance PVB intermediate film extrusion system capable of quickly switching production lines includes a bottom plate 1 and a cylinder body 2. One side of the cylinder body 2 is fixedly connected with an end plate 6. Both the upper and lower sides at the end of the other side of the cylinder body 2 are fixedly communicated with extrusion ports 8. A rotating component 3 is arranged on the outer wall of the cylinder body 2. One side of the upper end of the bottom plate 1 is provided with a lifting component 4. A rotating component 5 is arranged on the inner wall of the cylinder body 2. The outer wall end of the extrusion port 8 is processed with a flange 9, and the flange 9 is used to connect with the pipeline of the external PVB intermediate film extrusion production line. Feed ports 7 are processed on both the left and right sides of the front outer wall of the cylinder body 2.
[0017] Referring to the attached Figures 1-8: In this embodiment, the rotating assembly 3 includes a first gear 301 and a collar 305. The inner walls of multiple collars 305 are fixedly connected to the outer wall of the cylinder body 2. Both sides below the collar 305 are in close contact with roller wheels 304. The roller wheels 304 can rotatably support the collar 305 and the cylinder body 2. The outer walls of the rotating shafts of the roller wheels 304 are rotatably connected to brackets 303 through bearings. One side of the outer wall of the first gear 301 is meshed with a second gear 302. The outer walls of the rotating shafts of the second gear 302 are rotatably connected to the vertical beam 307 through bearings. Above the outer wall of one side of the vertical beam 307, a first servo motor 306 is fixedly connected. The first servo motor 306 has a self-locking ability, and the specific model can be determined according to the usage requirements. The end of the output shaft of the first servo motor 306 is fixedly connected to the second gear 302. The lower ends of the vertical beam 307 and the brackets 303 are both fixedly connected to the bottom plate 1.
[0018] Refer to the appendix Figures 1-8 : In this embodiment, the lifting assembly 4 includes a lifting platform 403. L-shaped plates 405 are fixedly connected to the four corners of the lifting platform 403. The upper inner walls of the L-shaped plates 405 are fixedly connected to the output shafts of electric push rods 404. The models of the electric push rods 404 can be determined according to the specific usage requirements. The electric push rods 404 are all fixedly connected to the bottom plate 1 through bolts, and multiple electric push rods 404 are synchronously controlled by a PLC controller. On both sides of the upper end of the lifting platform 403, a reducer 401 and a second servo motor 402 are respectively fixedly connected. The model of the servo motor 402 can be determined according to the specific usage requirements. The output shaft of the second servo motor 402 is fixedly connected to the input shaft of the reducer 401. The main body parts of multiple electric push rods 404 are fixedly connected to the bottom plate 1.
[0019] Refer to the appendix Figures 1-8 : In this embodiment, the rotating assembly 5 includes a feeding screw 501 and a card slot 504. Multiple feeding screws 501 are respectively located in the inner cavity at the upper and lower sides of the cylinder body 2. The front sides of the rotating parts of multiple feeding screws 501 are rotatably connected to the end plate 6 through bearings. Ear plates 503 are fixedly connected to the front sides of the outer walls of multiple feeding screws 501. Convex blocks 502 are processed at the front ends of multiple feeding screws 501. The card slot 504 is processed on the end face of the outer wall of the output shaft of the reducer 401. The inner wall at the end of the ear plate 503 is fixedly connected to the end plate 6 through bolts. The rotation of the feeding screw 501 can be restricted by bolts. The convex block 502 and the card slot 504 correspond to each other in the vertical direction. To illustrate the specific state, the bolts at the specific ear plate 503 of the feeding screw 501 located above are always in the inserted state (specifically, one or two bolts can be screwed in according to needs), that is, in a non-rotatable state, while the bolts at the specific ear plate 503 of the feeding screw 501 located below are always in the pulled-out state, so as to be driven by the second servo motor 402 to rotate.
[0020] Working principle: When this high-transparency and high-weather-resistance PVB interlayer extrusion system with a quickly switchable production line is needed for use, first, the user can align the extrusion outlet 8 at the bottom with the PVB interlayer extrusion production line, and connect the extrusion outlet 8 at the bottom with the external PVB interlayer extrusion production line pipeline through the flange 9. Subsequently, the granular raw materials for the production of high-transparency and high-weather-resistance PVB interlayers (the granular raw materials are mixed with functional particles to achieve high transparency and high weather resistance, and the material is determined according to specific usage requirements) are put in from the feeding port 7 on the right (with the opening facing upwards). At this time, the granular structure at the feeding port 7 will flow to the lower conical surface of the inner wall of the cylinder body 2. Then, start the second servo motor 402, so that the second servo motor 402 drives the lower feeding screw 501 to rotate through the cooperation of the speed reducer 401, the convex block 502 and the clamping groove 504, making the feeding screw 501 continuously convey the granular materials backward, and the granular materials are heated and melted in the second half of the cylinder body 2 by the heating structure inside the cylinder body 2 (this is an existing technology, and the heating method can be determined according to requirements to meet the requirements. Specifically, a heating plate and a temperature controller can be used to achieve heating), melting the granular materials into molten polyvinyl butyral (i.e., PVB), and being continuously pushed forward by the materials behind, and finally discharged from the extrusion outlet 8 at the bottom, and conveyed to the external PVB interlayer extrusion production line pipeline, and conveyed to the corresponding interlayer mold to achieve final forming.
[0021] During the production process, it is usually necessary to change different production lines according to different usage requirements. For example, when switching production between transparent PVB interlayer film and colored PVB interlayer film, multiple electric push rods 404 can be controlled to start synchronously (multiple electric push rods 404 are uniformly controlled by a PLC controller for starting, stopping, extending, and retracting), so that the electric push rods 404 drive the L-shaped plate 405 and the lifting platform 403 to move upward. Then, the servo motor two 402 and the reducer 401 can be driven to move upward, so that the lower card slot 504 is disengaged from the convex block 502. Subsequently, the servo motor one 306 is controlled, so that the servo motor one 306 drives the cylinder body 2 to rotate 180° through the gear two 302 and the gear one 301, so that the feeding screw rods 501 at the upper and lower positions and the feeding ports 7 at the left and right positions are interchanged. After the rotation, the specific position of the cylinder body 2 is locked by the self-locking ability of the servo motor one 306. At this time, the inner cavity of the cylinder body 2 that has been processed once is rotated to the upper side, and the inner cavity of the unprocessed cylinder body 2 is rotated to the lower side. Then, the extrusion port 8 at the lower side is connected to the pipeline of the PVB interlayer film extrusion production line of another production line outside through the flange 9. Then, by controlling the rotation of the lower feeding screw rod 501 and feeding the granular raw materials required for another production line through the feeding port 7 on the right side at this time, the extrusion production of the PVB interlayer film of another production line can be realized, effectively avoiding the problems in the comparative document that the use of a double-extruder structure design results in a high cost and it is difficult to ensure the same distance from the two extruders to the production line during specific installation, resulting in inconsistent material conveying efficiency and affecting the final extrusion effect.
[0022] The specific process of the feeding screw rod 501 pushing can be controlled by continuously controlling the extension or retraction of the electric push rod 404. Before the cylinder body 2 needs to be rotated, the electric push rod 404 is controlled to extend, so that the servo motor two 402 and the reducer 401 move upward, so that the card slot 504 is disengaged from the lower convex block 502. After the servo motor two 402 and the reducer 401 move to approximately the central position of the cylinder body 2 (it can be stopped when moving to a range where it will not block the rotation of the front convex block 502 of the feeding screw rod 501), and then after the cylinder body 2 is rotated, the electric push rod 404 is controlled to lower the servo motor two 402 and the reducer 401, and the card slot 504 and the convex block 502 are re-inserted to achieve rotational transmission, effectively avoiding the problems that the design of a double-extruder structure requires a separate power source for each extrusion structure, resulting in a relatively high cost and poor rotational synchronization ability.
[0023] Finally, before the upper and lower pushing screws 501 are interchanged, in order to ensure that during the flipping process of the barrel 2, the two pushing screws 501 will not rotate themselves, causing the position of the protrusion 502 to shift (no longer in a vertical state) and affecting the final docking process of the protrusion 502 and the slot 504, an ear plate 503 structure is designed in this case. First, the specific state is explained. The bolts at the ear plate 503 of the upper pushing screw 501 are always in an inserted state (specifically, one bolt or two bolts can be screwed in according to needs), that is, they cannot rotate, while the bolts at the ear plate 503 of the lower pushing screw 501 are always in a pulled-out state so that they can be driven by the servo motor 2 402 to rotate. Rotation, and before flipping the barrel 2, the user can tighten the bolts at the ear plate 503 of the pushing screw 501 located below, and then release the connection between the slot 504 and the protrusion 502. At this time, the barrel 2 is rotated again. Since the ear plate 503 is in a bolted state regardless of its upper or lower position during the rotation process, there will be no position change. Until the flipping is completed, the slot 504 is re-connected with the protrusion 502 below, and then the bolts at the ear plate 503 of the pushing screw 501 located below can be pulled out. This effectively avoids the problem of misalignment of the docking structure of the motor and the pushing screw during the flipping process when a single motor is used to drive two pushing screws.
[0024] After the equipment is finished using, the electric push rod 404 can be regularly removed from the base plate 1 (the electric push rod 404 is installed on the base plate 1 by bolts), and then the end plate 6 together with the pushing screw 501 can be taken out from the inside of the barrel 2, and then the pushing screw 501 and the barrel 2 can be regularly inspected and cleaned using tools, and reset and fixed after cleaning.
[0025] Although the present invention has been shown and described with reference to preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.
Claims
1. A high-transparency and high-weather-resistance PVB interlayer film extrusion system capable of quickly switching production lines, comprising a bottom plate (1) and a cylinder body (2), characterized in that: One side of the cylinder body (2) is fixedly connected with an end plate (6). On the upper and lower sides at the other end of the cylinder body (2), extrusion outlets (8) are fixedly communicated. A rotating assembly (3) is arranged on the outer wall of the cylinder body (2). On one side of the upper end of the bottom plate (1), a lifting assembly (4) is installed. A rotating assembly (5) is arranged on the inner wall of the cylinder body (2). Feed ports (7) are processed on the left and right sides of the front outer wall of the cylinder body (2).
2. The high-transparency and high-weather resistance PVB interlayer film extrusion system capable of quickly switching production lines according to claim 1, characterized in that: The rotating assembly (3) includes a first gear (301) and a collar (305). The inner walls of a plurality of collars (305) are fixedly connected with the outer wall of the cylinder body (2). Roller wheels (304) are respectively attached to the lower sides of the two sides of the collar (305). The outer walls of the rotating shafts of the roller wheels (304) are rotatably connected with brackets (303) through bearings. A second gear (302) is meshed with one side of the outer wall of the first gear (301). The outer walls of the rotating shafts of the second gears (302) are rotatably connected with a vertical beam (307) through bearings. A first servo motor (306) is fixedly connected to the upper part of the outer wall of one side of the vertical beam (307). The end of the output shaft of the first servo motor (306) is fixedly connected with the second gear (302).
3. The high-transparency and high-weather resistance PVB interlayer film extrusion system capable of quickly switching production lines according to claim 2, wherein: The lower ends of the vertical beam (307) and the brackets (303) are fixedly connected with the bottom plate (1).
4. The high-transparency and high-weather resistance PVB interlayer film extrusion system capable of quickly switching production lines according to claim 1, characterized in that: The lifting assembly (4) includes a lifting platform (403). L-shaped plates (405) are fixedly connected to the four corners of the lifting platform (403). The output shafts of electric push rods (404) are fixedly connected with the upper inner walls of the L-shaped plates (405). A reducer (401) and a second servo motor (402) are respectively fixedly connected to the two sides of the upper end of the lifting platform (403). The output shaft of the second servo motor (402) is fixedly connected with the input shaft of the reducer (401).
5. The high-transparency and high-weather resistance PVB interlayer film extrusion system capable of quickly switching production lines according to claim 4, characterized in that: The lower parts of the main bodies of a plurality of electric push rods (404) are fixedly connected with the bottom plate (1).
6. The high-transparency and high-weather resistance PVB interlayer film extrusion system capable of quickly switching production lines according to claim 1, characterized in that: The rotating assembly (5) includes a feeding screw (501) and a clamping groove (504). A plurality of feeding screws (501) are respectively located in the inner cavity of the upper and lower sides of the cylinder body (2). The front sides of the rotating parts of the plurality of feeding screws (501) are rotatably connected with the end plate (6) through bearings. Ear plates (503) are fixedly connected to the front sides of the outer walls of the plurality of feeding screws (501). Convex blocks (502) are processed at the front ends of the plurality of feeding screws (501). The clamping groove (504) is processed on the end face of the outer wall of the output shaft of the reducer (401).
7. The high-transparency and high-weather-resistance PVB interlayer film extrusion system capable of quickly switching production lines according to claim 6, characterized in that: The inner wall of the end of the ear plate (503) is fixedly connected with the end plate (6) through bolts. The convex blocks (502) and the clamping grooves (504) correspond to each other in the vertical direction.
8. The high-transparency and high-weather-resistance PVB interlayer film extrusion system capable of quickly switching production lines according to claim 1, wherein: A flange (9) is processed at the end of the outer wall of the extrusion outlet (8).