A protective film constant tension winding apparatus

Abstract

The utility model discloses a kind of protective film constant tension winding equipment, including base and transmission gearbox, the transmission gearbox is set on base, the output end of transmission gearbox one end is equipped with unwinding mechanism, the output end of transmission gearbox other end is equipped with winding mechanism, and tension detection mechanism is installed between unwinding mechanism and winding mechanism in the middle of transmission gearbox, and auxiliary roller is rotatably connected in transmission gearbox upper side on both sides of tension detection mechanism.The utility model is equipped with unwinding mechanism and winding mechanism, and fast release type mounting structure is used, winding drum is disassembled and installed conveniently, the plug-in rod is connected with mounting seat and rotating shaft, and it is fixed by magnet one and magnet two, and it is convenient to quickly disassemble, and the circular groove, locking rod, spring and pressing plate can be locked to plug-in rod, further fixed mounting seat and rotating shaft, and disassembly does not need tool.

Description

Technical Field

[0001] This utility model relates to the field of thin film processing equipment technology, specifically a protective film constant tension winding device. Background Technology

[0002] The constant tension winding equipment for protective films is a specialized device that maintains a constant tension on the material during the winding process. It is mainly used in the coating and winding processes of protective films to ensure winding accuracy and material flatness. Traditional winding equipment relies on manual adjustment of tension, which can easily cause tension fluctuations due to changes in material elasticity or speed, resulting in stretching deformation or breakage of the protective film. Some electrically controlled structures are complex and difficult to maintain.

[0003] The prior art, disclosed in patent publication number CN218560664U, presents the following technical solution: a constant tension winding control mechanism for a yarn winding machine, relating to the field of yarn winding machine technology, comprising a table, wherein the table is provided with: a yarn bobbin frame, the yarn bobbin frame being vertically arranged at one end of the table, and a yarn guide hook being arranged beside the yarn bobbin frame; a tension control component, the tension control component comprising a yarn storage device and a digital tension device arranged sequentially along the yarn conveying direction, the yarn storage device and the digital tension device being electrically connected to an integrated controller via wires; and a reciprocating component, the reciprocating component comprising two symmetrically arranged reciprocating supports, one of which is equipped with a first motor.

[0004] Although the above technical solution can control the tension of the material, when the yarn card is removed after winding, tools are needed to remove the fixing bolts around the perimeter, which increases the time for disassembly and installation and makes the operation inconvenient. Utility Model Content

[0005] The purpose of this invention is to provide a constant tension winding device for protective film to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a constant tension winding device for protective film, comprising a base and a transmission housing, wherein the transmission housing is disposed on the base, an unwinding mechanism is installed at the output end of one end of the transmission housing, a winding mechanism is installed at the output end of the other end of the transmission housing, a tension detection mechanism is installed in the middle of the transmission housing and between the unwinding mechanism and the winding mechanism, and auxiliary rollers are rotatably connected to both sides of the tension detection mechanism and located above the transmission housing.

[0007] Both the unwinding mechanism and the rewinding mechanism include mounting frames, which are respectively set at both ends of the transmission housing. Mounting seats are provided on the output ends on both sides of the transmission housing and on the mounting frames. A snap-fit ​​block is fixedly connected in the groove of each mounting seat. Insertion holes are provided on both the mounting seat and the snap-fit ​​block. A circular groove is connected to the insertion hole on one side of the mounting seat. A locking rod is slidably connected between the circular groove and the insertion hole. A spring is embedded in the inner side of each insertion hole. A pressure plate is provided on the other side of each spring. The outer wall of the pressure plate is slidably connected to the inner wall of the circular groove.

[0008] A rod is inserted between the mounting base and the insertion hole on the snap-fit ​​block. A locking hole is provided on the inner side of each rod. The locking rod is inserted into the locking hole. An embedded plate is provided on the outer side of each rod. An annular groove is provided on the outer surface of one side of the mounting base. A magnet is provided in the annular groove. A magnet is provided on the outer side of the embedded plate. When the embedded plate is inserted into the annular groove, magnet two and magnet one are magnetically attracted to each other.

[0009] As a further preferred embodiment of this technical solution, the tension detection mechanism includes a frame, the frame is bolted in the middle of the transmission housing, T-shaped grooves are provided on both side walls of the frame, T-shaped sliders are slidably connected in the T-shaped grooves, and a floating roller is installed between the front and rear T-shaped sliders.

[0010] As a further preferred embodiment of this technical solution, spring telescopic rods are provided at both ends of the top side inside the frame, the spring telescopic rods are connected to the floating rollers, and a displacement sensor is installed in the middle of the top side inside the frame.

[0011] As a further preferred embodiment of this technical solution, a PLC control module is installed on the outside of the transmission housing. The PLC control module is connected to a displacement sensor and adjusts and controls the speed of the brake or the winding motor according to the signal.

[0012] As a further preferred embodiment of this technical solution, the outer surface of the floating roller is coated with Teflon coating.

[0013] The above technical solution can reduce the coefficient of friction, reduce scratches on the protective film caused by sliding friction, and avoid excessive friction interfering with the accuracy of tension detection.

[0014] As a further preferred embodiment of this technical solution, a rotating shaft is engaged between the two mounting bases, and a locking groove is provided at both ends of the rotating shaft. The locking groove engages with the locking block, and the insertion rod passes through it.

[0015] As a further preferred embodiment of this technical solution, both magnet 2 and magnet 1 are neodymium iron boron magnetic rings.

[0016] This utility model provides a protective film constant tension winding device, which has the following beneficial effects:

[0017] (1) The unwinding mechanism and the winding mechanism of this utility model adopt quick-release installation structure, which facilitates the disassembly and installation of the winding drum. The insertion rod connects the mounting base and the rotating shaft, and fixes them by magnet one and magnet two, which facilitates quick disassembly and assembly. The circular groove, locking rod, spring and pressure plate can lock the insertion rod, further fixing the mounting base and the rotating shaft. No tools are required for disassembly and assembly.

[0018] (2) By installing a tension detection mechanism, when the tension of the protective film increases, the floating roller moves upward, the spring telescopic rod is compressed, and the tension signal is transmitted to the PLC control module through the displacement sensor. The PLC control module then reduces the speed of the winding motor or increases the resistance of the brake. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the tension detection mechanism of this utility model;

[0021] Figure 3 This is an enlarged view of Figure A of this utility model;

[0022] Figure 4 This is a schematic diagram of the winding and unwinding mechanism of this utility model;

[0023] Figure 5 This is a cross-sectional view of the mounting base of this utility model;

[0024] Figure 6 This is an enlarged view of Figure B of this utility model;

[0025] In the diagram: 1. Base; 2. Transmission housing; 3. PLC control module; 4. Unwinding mechanism; 5. Tension detection mechanism; 6. Auxiliary roller; 7. Rewinding mechanism; 51. Frame; 52. T-shaped slide; 53. T-shaped slider; 54. Floating roller; 55. Spring telescopic rod; 56. Displacement sensor; 41. Mounting bracket; 42. Rotating shaft; 43. Snap-fit ​​groove; 44. Mounting base; 441. Insertion hole; 442. Circular groove; 443. Locking rod; 444. Spring; 445. Pressure plate; 446. Annular groove; 447. Magnet one; 45. Snap-fit ​​block; 46. Insert rod; 461. Locking hole; 462. Embedded plate; 463. Magnet two. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0027] This utility model provides a technical solution: such as Figure 1 As shown in this embodiment, a constant tension winding device for protective film includes a base 1 and a transmission housing 2. The transmission housing 2 is mounted on the base 1. An unwinding mechanism 4 is installed at the output end of one end of the transmission housing 2, and a winding mechanism 7 is installed at the output end of the other end of the transmission housing 2. A tension detection mechanism 5 is installed in the middle of the transmission housing 2 and between the unwinding mechanism 4 and the winding mechanism 7. Auxiliary rollers 6 are rotatably connected to both sides of the tension detection mechanism 5 and located above the transmission housing 2.

[0028] like Figure 4 and Figure 5 As shown, both the unwinding mechanism 4 and the winding mechanism 7 include a mounting frame 41. The mounting frames 41 are respectively set at both ends of the transmission housing 2. The output ends on both sides of the transmission housing 2 and the mounting frame 41 are provided with mounting seats 44. The mounting seats 44 are fixedly connected with snap-fit ​​blocks 45 in the grooves. The mounting seats 44 and snap-fit ​​blocks 45 are provided with insertion holes 441. The insertion hole 441 on one side of the mounting seat 44 is connected to a circular groove 442. The circular groove 442 and the insertion hole 441 are slidably connected with locking rods 443. The insertion hole 441 is embedded with springs 444. The other side of the springs 444 is provided with pressure plates 445. The outer wall of the pressure plates 445 is slidably connected with the inner wall of the circular groove 442. The circular groove 442, locking rods 443, springs 333 and pressure plates 445 can lock the insertion rod 46, and further fix the mounting seat 44 and the rotating shaft 42. No tools are required for disassembly and assembly.

[0029] like Figure 5 and Figure 6 As shown, a rotating shaft 42 is engaged between the front and rear mounting bases 44. Both ends of the rotating shaft 42 have engagement grooves 43, which engage with engagement blocks 45, through which insertion rods 46 pass. Insertion rods 46 are inserted between the mounting base 44 and the insertion holes 441 on the engagement blocks 45. A locking hole 461 is provided on the inner side of each insertion rod 46, and a locking rod 443 is inserted into the locking hole 461. An embedded plate 462 is provided on the outer side of each insertion rod 46. An annular groove 446 is provided on one side of the outer surface of the mounting base 44, and a magnet 447 is provided within each annular groove 446. Magnets 463 are provided on the outer side of plate 462. When plate 462 is embedded in an annular groove 446, magnets 463 and magnets 447 are magnetically attracted. Both magnets 463 and 447 are neodymium iron boron magnetic rings with strong magnetic force, which prevents the insert rod 46 from coming off under centrifugal force. The unwinding mechanism 4 and winding mechanism 7 are both equipped with quick-release installation structure, which facilitates the disassembly and installation of the winding drum. The insert rod 46 connects the mounting base 44 to the rotating shaft 42 and fixes it with magnets 447 and 463, which facilitates quick disassembly and assembly.

[0030] like Figure 2 and Figure 3As shown, the tension detection mechanism 5 includes a frame 51, which is bolted to the middle of the transmission housing 2. T-shaped grooves 52 are provided on both side walls of the frame 51, and T-shaped sliders 53 are slidably connected within each groove. A floating roller 54 is installed between the two T-shaped sliders 53. The outer surface of the floating roller 54 is coated with Teflon. Spring telescopic rods 55 are provided at both ends of the top side inside the frame 51, and these rods are connected to the floating rollers 54. A displacement sensor 56, a photoelectric sensor, is installed in the middle of the top side inside the frame 51. A PLC control module 3 is installed on the outside of the transmission housing 2, connected to the displacement sensor 56. Based on the signal, the PLC control module adjusts and controls the speed of the brake or the winding motor. By installing the tension detection mechanism 5, when the tension of the protective film increases, the floating roller 54 moves upward, the spring telescopic rods 55 compress, and the tension signal is transmitted to the PLC control module 3 via the displacement sensor 56. The PLC control module 3 then reduces the speed of the winding motor or increases the resistance of the brake.

[0031] This utility model provides a protective film constant tension winding device, the specific working principle of which is as follows: The protective film roll is clamped between the front and rear mounting seats 44, and then the insertion rod 46 is inserted to connect the mounting seat 44 to the rotating shaft 42. At the same time, 443 is pulled so that 445 squeezes and compresses 444. When one end of 46 is inserted, the locking rod 443 is released to lock it in the locking hole 461. At this time, the second magnet 463 and the first magnet 447 are magnetically attracted, thereby quickly completing the installation of the protective film roll. The protective film is pulled onto the winding mechanism 7 and passes through the tension detection mechanism 5 to form a "U" shape. The winding mechanism 7 is driven to rotate by the winding motor to wind the film.

[0032] During the winding process, if the tension of the protective film increases, the floating roller 54 will move upward, the spring telescopic rod 55 will compress, and the tension signal will be transmitted to the PLC control module 3 through the displacement sensor 56. The PLC control module 3 will then reduce the speed of the winding motor or increase the resistance of the brake to prevent the protective film from being stretched and deformed. Conversely, when the tension decreases, the floating roller 54 will reset, and the tension signal will be transmitted to the PLC control module 3 again through the displacement sensor 56, thereby increasing the speed of the winding motor or reducing the resistance of the brake, thus forming a closed-loop control.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A constant tension winding device for protective film, comprising a base (1) and a transmission housing (2), characterized in that: The transmission housing (2) is mounted on the base (1). An unwinding mechanism (4) is installed at one end of the transmission housing (2), and a winding mechanism (7) is installed at the other end of the transmission housing (2). A tension detection mechanism (5) is installed in the middle of the transmission housing (2) between the unwinding mechanism (4) and the winding mechanism (7). Auxiliary rollers (6) are rotatably connected on both sides of the tension detection mechanism (5) and above the transmission housing (2). Both the unwinding mechanism (4) and the winding mechanism (7) include a mounting frame (41). The mounting frame (41) is respectively set at both ends of the transmission housing (2). The output ends on both sides of the transmission housing (2) and the mounting frame (41) are provided with mounting seats (44). The mounting seats (44) are fixedly connected with snap-fit ​​blocks (45) in the grooves. The mounting seats (44) and snap-fit ​​blocks (45) are provided with insertion holes (441). The insertion hole (441) on one side of the mounting seat (44) is connected to a circular groove (442). The circular groove (442) and the insertion hole (441) are slidably connected with a locking rod (443). The insertion hole (441) is embedded in the inner side of the insertion hole (441). The other side of the spring (444) is provided with a pressure plate (445). The outer wall of the pressure plate (445) is slidably connected to the inner wall of the circular groove (442). Insert rods (46) are inserted between the mounting base (44) and the insertion hole (441) on the snap-fit ​​block (45). A locking hole (461) is provided on the inner side of each insert rod (46). The locking rod (443) is inserted into the locking hole (461). An embedding plate (462) is provided on the outer side of each insert rod (46). An annular groove (446) is provided on the outer surface of one side of the mounting base (44). A magnet (447) is provided in the annular groove (446). A magnet (463) is provided on the outer side of the embedding plate (462). When the embedding plate (462) is embedded in the annular groove (446), the magnet (463) and the magnet (447) are magnetically attracted.

2. The protective film constant tension winding device according to claim 1, characterized in that: The tension detection mechanism (5) includes a frame (51), the frame (51) is bolted in the middle of the transmission housing (2), and T-shaped grooves (52) are provided on both sides of the frame (51). T-shaped sliders (53) are slidably connected in the T-shaped grooves (52), and floating rollers (54) are installed between the front and rear T-shaped sliders (53).

3. The protective film constant tension winding device according to claim 2, characterized in that: The top side of the frame (51) is provided with spring telescopic rods (55) at both ends. The spring telescopic rods (55) are connected to the floating rollers (54). A displacement sensor (56) is installed in the middle of the top side of the frame (51).

4. The protective film constant tension winding device according to claim 1, characterized in that: A PLC control module (3) is installed on the outside of the transmission housing (2). The PLC control module (3) is connected to the displacement sensor (56) and adjusts the speed of the brake or winding motor according to the signal.

5. A constant tension winding device for protective film according to claim 2, characterized in that: The outer surface of the floating roller (54) is coated with Teflon coating.

6. The protective film constant tension winding device according to claim 1, characterized in that: A rotating shaft (42) is snapped between the two mounting bases (44) at the front and back. Both ends of the rotating shaft (42) are provided with snap-fit ​​grooves (43). The snap-fit ​​grooves (43) are snapped with the snap-fit ​​blocks (45), and the insertion rod (46) passes through them.

7. The protective film constant tension winding device according to claim 1, characterized in that: Both magnet 2 (463) and magnet 1 (447) are neodymium iron boron magnetic rings.

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