Polyimide film stretching device with heat preservation function

Abstract

The utility model discloses a polyimide film stretching device with a heat preservation function, which relates to the technical field of film stretching and comprises a frame and a fixing frame. Conveying rollers are rotationally connected to the two sides of the interior of the frame, motors are fixed to the two sides of the top face of the frame, output shafts of the motors are connected with the top ends of lead screws, the lead screws are in threaded connection with screw holes in the middles of adjusting blocks, the adjusting blocks are slidably connected with adjusting grooves in the inner side of the frame, and the side faces of the fixing frames and the adjusting blocks are fixedly installed. According to the polyimide film stretching device with the heat preservation function, the stretching position of a polyimide film can be heated through an auxiliary heating pipe arranged in the fixing frame, meanwhile, the temperature in the frame can be adjusted through a main heating pipe, and therefore the stretching position of the polyimide film can be heated through the auxiliary heating pipe; therefore, the problem that the polyimide film is torn in the stretching process due to temperature discomfort is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of film stretching, in particular to a polyimide film stretching device with a heat-insulating function. Background Art

[0002] Polyimide films include two types: pyromellitic anhydride and diaminodiphenyl ether, and biphenyl polyimide films. The former is made from pyromellitic anhydride and diaminodiphenyl ether, while the latter is made from biphenyltetracarboxylic dianhydride and diphenyl ether diamine or m-phenylenediamine. They are particularly suitable for use as flexible printed circuit board substrates and various high-temperature resistant motor and electrical insulation materials. However, during the processing of polyimide films, a stretching device is required to stretch them into different thicknesses. The internal temperature of most stretching devices is uncontrollable, which makes the polyimide film prone to tearing and damage during the stretching process. To this end, we propose a stretching device for polyimide films with thermal insulation function. Utility Model Content

[0003] The technical problem to be solved by the present invention is to overcome the existing defects and provide a stretching device for polyimide film with a heat preservation function. The auxiliary heating tube installed in the fixed frame can heat the stretching position of the polyimide film, and the main heating tube can adjust the temperature inside the frame at the same time, thereby preventing the polyimide film from tearing during the stretching process due to temperature discomfort, which can effectively solve the problems in the background technology.

[0004] To achieve the above-mentioned purpose, the present utility model provides the following technical solutions: a stretching device for a polyimide film with a heat-insulating function, comprising a frame and a fixing frame;

[0005] Frame: Conveying rollers are rotatably connected on both sides of the interior, a motor is fixed on both sides of the top surface of the frame, the output shaft of the motor is connected to the top of the lead screw, the lead screw is threadedly connected to the screw hole in the middle of the adjustment block, the adjustment block is slidably connected to the adjustment slot on the inside of the frame, the side of the fixing frame is fixedly installed with the adjustment block, the interior of the fixing frame is rotatably connected to the stretching roller, a temperature control unit is provided inside the frame, and limit units are provided on both sides of the interior of the frame;

[0006] Wherein, it also includes a controller, which is arranged at the bottom end of the front side of the frame, the input end of the motor is electrically connected to the output end of the controller, and the input end of the controller is electrically connected to the output end of the external power supply.

[0007] The starting motor drives the lead screw to rotate, thereby adjusting the height of the stretching roller to cooperate with the conveying roller to stretch the polyimide film.

[0008] Furthermore, the temperature control unit includes an insulation board, a temperature sensor, a T-block, a main heating tube and an auxiliary heating tube. The main heating tube is evenly installed on the front and rear sides of the frame, and the auxiliary heating tube is installed in the groove on the top surface of the fixed frame. A T-block is fixed on the top of the inner side of the insulation board, and the T-block is slidably connected to the T-slot on the side of the frame. The temperature sensor is fixed on the top surface of the frame. The input ends of the main heating tube and the auxiliary heating tube are electrically connected to the output end of the controller, and the output end of the temperature sensor is electrically connected to the input end of the controller. The auxiliary heating tube provided in the fixed frame can heat the stretching position of the polyimide film, and the main heating tube can adjust the temperature inside the frame. The T-block slides with the T-slot to install the insulation board, thereby preventing the polyimide film from tearing during the stretching process due to temperature discomfort.

[0009] Furthermore, the limiting unit includes a rotating wheel, a screw, a limiting frame, an anti-slip block and a fixed plate, the fixed plate is fixed on one side inside the frame, the rotating wheel is rotatably connected to the surface of the frame, the inner end of the rotating wheel is connected to the outer end of the screw, the screw is threadedly connected to the screw hole on the surface of the limiting frame, the bottom surface of the limiting frame is provided with an anti-slip block, and the anti-slip block is slidably connected to the through groove on the top surface of the fixed plate, and the rotating wheel drives the screw to rotate to adjust the position of the limiting frame, thereby limiting the stretched polyimide film to prevent the polyimide film from deviating and affecting subsequent stretching.

[0010] Furthermore, it also includes an electric push rod, a roller frame and a pressure roller. There are two electric push rods, which are fixed on the top surface of the fixed plate in front and back correspondence. The bottom end of the electric push rod is connected to one side of the top surface of the roller frame. The internal rotation of the roller frame is connected to the pressure roller. The input end of the electric push rod is electrically connected to the output end of the controller. Starting the electric push rod causes the pressure roller to press the polyimide film on the outside of the conveying roller, which is conducive to stretching.

[0011] Furthermore, it also includes a fixing seat and a thickness sensor. The fixing seat is fixed at the middle of the top surface of the fixing plate. The thickness sensor is clamped inside the fixing seat. The output end of the thickness sensor is electrically connected to the input end of the controller. The thickness sensor inside the fixing seat can detect the thickness of the polyimide film before and after stretching, thereby facilitating personnel to make timely adjustments.

[0012] Furthermore, it also includes an alarm light and a display screen. There are two alarm lights and they are installed on the top of the front side of the frame respectively. The display screen is fixed on the front side of the frame. The input ends of the alarm light and the display screen are electrically connected to the output end of the controller. The display screen can display the detected data and start the alarm light to remind personnel when a problem occurs in the detection.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: the stretching device for polyimide film with heat preservation function has the following advantages:

[0014] 1. The auxiliary heating tube installed in the fixed frame can heat the stretching position of the polyimide film, while the main heating tube can adjust the temperature inside the frame. The T-block and T-slot slide to install the insulation board, thereby preventing the polyimide film from tearing during the stretching process due to temperature discomfort.

[0015] 2. The position of the limit frame is adjusted by rotating the rotating wheel to drive the screw to rotate, thereby limiting the stretched polyimide film to prevent the polyimide film from deviating and affecting the subsequent stretching.

[0016] 3. The thickness of the polyimide film before and after stretching can be detected by the thickness sensor inside the fixing seat. The display screen can display the detection data and start the alarm light to remind personnel when there is a problem in the detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the cross-sectional structure of the framework of the present utility model;

[0019] Figure 3 For this utility model Figure 2 Schematic diagram of the locally enlarged structure at point A in the middle.

[0020] In the figure: 1 frame, 2 temperature control unit, 21 insulation board, 22 temperature sensor, 23 T-block, 24 main heating tube, 25 auxiliary heating tube, 3 limit unit, 31 rotating wheel, 32 screw, 33 limit frame, 34 anti-slip block, 35 fixed plate, 4 conveyor roller, 5 motor, 6 lead screw, 7 fixed frame, 8 adjustment block, 9 stretching roller, 10 electric push rod, 11 roller frame, 12 pressure roller, 13 fixed seat, 14 thickness sensor, 15 alarm light, 16 display screen, 17 controller. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] See also Figure 1-3, this embodiment provides a technical solution: a stretching device for a polyimide film with a heat-insulating function, comprising a frame 1 and a fixing frame 7;

[0023] Frame 1: Both sides of the interior are rotatably connected with conveying rollers 4, and both sides of the top surface of the frame 1 are fixed with motors 5. The output shaft of the motor 5 is connected to the top of the lead screw 6, and the lead screw 6 is threadedly connected to the screw hole in the middle of the adjustment block 8. The adjustment block 8 is slidably connected to the adjustment groove inside the frame 1. The side of the fixed frame 7 is fixedly installed with the adjustment block 8. The interior of the fixed frame 7 is rotatably connected with a stretching roller 9. The interior of the frame 1 is provided with a temperature control unit 2, which includes an insulation board 21, a temperature sensor 22, a T-block 23, and a main heating The main heating tube 24 and the auxiliary heating tube 25 are evenly installed on the front and rear sides of the frame 1, and the auxiliary heating tube 25 is installed in the groove on the top surface of the fixing frame 7. A T-block 23 is fixed on the top of the inner side of the insulation board 21. The T-block 23 is slidably connected to the T-slot on the side of the frame 1. The temperature sensor 22 is fixed on the top surface of the frame 1. The input ends of the main heating tube 24 and the auxiliary heating tube 25 are electrically connected to the output end of the controller 17, and the output end of the temperature sensor 22 is electrically connected to the input end of the controller 17. The auxiliary heating tube 25 provided in the fixing frame 7 can heat the stretching position of the polyimide film, and the main heating tube 24 can adjust the temperature inside the frame 1. The T-block 23 slides with the T-slot to install the insulation board 21, thereby preventing the polyimide film from tearing during the stretching process due to temperature discomfort. Both sides of the frame 1 are provided with a limit unit 3, which includes a rotating wheel 31, a screw 32, a limit frame 33, an anti-slip block 34 and a fixing plate 35. The fixing plate 35 is fixed. Fixed on one side of the interior of the frame 1, the rotating wheel 31 is rotatably connected to the surface of the frame 1, the inner end of the rotating wheel 31 is connected to the outer end of the screw 32, the screw 32 is threadedly connected to the screw hole on the surface of the limiting frame 33, the bottom surface of the limiting frame 33 is provided with an anti-slip block 34, and the anti-slip block 34 is slidably connected to the through groove on the top surface of the fixing plate 35. Rotating the rotating wheel 31 drives the screw 32 to rotate to adjust the position of the limiting frame 33, thereby limiting the stretched polyimide film to prevent the polyimide film from deviating and affecting subsequent stretching;

[0024] Among them, it also includes a controller 17, which is arranged at the bottom end of the front side of the frame 1, the input end of the motor 5 is electrically connected to the output end of the controller 17, and the input end of the controller 17 is electrically connected to the output end of the external power supply. The motor 5 is started to drive the screw 6 to rotate, thereby adjusting the height of the stretching roller 9 to cooperate with the conveying roller 4 to stretch the polyimide film. It also includes an electric push rod 10, a roller frame 11 and a pressure roller 12. The electric push rod 10 has two and is fixed on the top surface of the fixed plate 35 in front and back correspondence. The bottom end of the electric push rod 10 is connected to one side of the top surface of the roller frame 11. The internal rotation of the roller frame 11 is connected to the pressure roller 12. The input end of the electric push rod 10 is electrically connected to the output end of the controller 17. Starting the electric push rod 10 causes the pressure roller 12 to press the polyimide film on the outside of the conveying roller 4, thereby having It is conducive to stretching and also includes a fixing seat 13 and a thickness sensor 14. The fixing seat 13 is fixed in the middle of the top surface of the fixing plate 35. The thickness sensor 14 is clamped inside the fixing seat 13. The output end of the thickness sensor 14 is electrically connected to the input end of the controller 17. The thickness sensor 14 inside the fixing seat 13 can detect the thickness of the polyimide film before and after stretching, so as to facilitate personnel to make timely adjustments. It also includes an alarm light 15 and a display screen 16. There are two alarm lights 15 and they are installed on the top of the front side of the frame 1 on the left and right. The display screen 16 is fixed on the front side of the frame 1. The input ends of the alarm light 15 and the display screen 16 are electrically connected to the output end of the controller 17. The display screen 16 can display the detection data and start the alarm light 15 to remind personnel when there is a problem in the detection.

[0025] The working principle of the stretching device of a polyimide film with heat preservation function provided by the present invention is as follows: first, the polyimide film passes through the conveying roller 4, the electric push rod 10 is started to make the pressure roller 12 press the polyimide film on the outside of the conveying roller 4, which is conducive to stretching, and the motor 5 is started to drive the screw 6 to rotate, so as to adjust the height of the stretching roller 9 to cooperate with the conveying roller 4 to stretch the polyimide film. During the stretching process, the auxiliary heating pipe 25 provided in the fixed frame 7 can heat the stretching position of the polyimide film, and at the same time the main heating pipe 24 can adjust the temperature inside the frame 1. Adjustment, the T-block 23 slides with the T-slot to install the insulation board 21, so as to prevent the problem of tearing of the polyimide film during the stretching process caused by temperature discomfort, and the rotating wheel 31 drives the screw 32 to rotate to adjust the position of the limit frame 33, thereby limiting the stretched polyimide film to prevent the polyimide film from deviating and affecting the subsequent stretching. The thickness sensor 14 inside the fixing seat 13 can detect the thickness of the polyimide film before and after stretching, and the display screen 16 can display the detection data and start the alarm light 15 to remind personnel when a problem occurs in the detection.

[0026] It is worth noting that the controller 17 disclosed in the above embodiment uses the model S7-200. The main heating tube 24 and auxiliary heating tube 25 can be freely configured according to the actual application scenario. It is recommended to use a heating tube of model DN4050, an AS5600 temperature sensor can be used as the temperature sensor 22, and an IT10W-UV-VIS thickness sensor 14 can be used. The controller 17 controls the temperature sensor 22, the main heating tube 24, the auxiliary heating tube 25, the motor 5, the electric linear actuator 10, the thickness sensor 14, the warning light 15, and the display screen 16 using methods commonly used in the prior art.

[0027] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A stretching device for a polyimide film having a heat-insulating function, characterized in that: It comprises a frame (1) and a fixing frame (7); Frame (1): Conveying rollers (4) are rotatably connected on both sides of the interior, motors (5) are fixed on both sides of the top surface of the frame (1), the output shaft of the motor (5) is connected to the top of a lead screw (6), the lead screw (6) is threadedly connected to the screw hole in the middle of the adjustment block (8), the adjustment block (8) is slidably connected to the adjustment groove on the inner side of the frame (1), the side of the fixing frame (7) is fixedly installed with the adjustment block (8), the interior of the fixing frame (7) is rotatably connected to a stretching roller (9), a temperature control unit (2) is provided inside the frame (1), and limit units (3) are provided on both sides of the interior of the frame (1); The invention further comprises a controller (17), wherein the controller (17) is arranged at the bottom end of the front side of the frame (1), the input end of the motor (5) is electrically connected to the output end of the controller (17), and the input end of the controller (17) is electrically connected to the output end of an external power supply.

2. The stretching device for a polyimide film with a heat-insulating function according to claim 1, characterized in that: The temperature control unit (2) comprises a heat preservation plate (21), a temperature sensor (22), a T-shaped block (23), a main heating tube (24) and an auxiliary heating tube (25); the main heating tube (24) is evenly installed on the front and rear sides of the frame (1); the auxiliary heating tube (25) is installed in a groove on the top surface of the fixed frame (7); a T-shaped block (23) is fixed on the top of the inner side of the heat preservation plate (21); the T-shaped block (23) is slidably connected to the T-shaped groove on the side of the frame (1); the temperature sensor (22) is fixed on the top surface of the frame (1); the input ends of the main heating tube (24) and the auxiliary heating tube (25) are electrically connected to the output end of the controller (17); and the output end of the temperature sensor (22) is electrically connected to the input end of the controller (17).

3. The stretching device for a polyimide film with a heat-insulating function according to claim 1, characterized in that: The limiting unit (3) comprises a rotating wheel (31), a screw (32), a limiting frame (33), an anti-slip block (34) and a fixing plate (35); the fixing plate (35) is fixed to one side of the interior of the frame (1); the rotating wheel (31) is rotatably connected to the surface of the frame (1); the inner end of the rotating wheel (31) is connected to the outer end of the screw (32); the screw (32) is threadedly connected to a screw hole on the surface of the limiting frame (33); the bottom surface of the limiting frame (33) is provided with an anti-slip block (34); the anti-slip block (34) is slidably connected to a through groove on the top surface of the fixing plate (35).

4. The stretching device for a polyimide film with a heat-insulating function according to claim 3, characterized in that: The invention also includes an electric push rod (10), a roller frame (11) and a pressure roller (12), wherein the electric push rod (10) has two electric push rods (10) and is fixed on the top surface of the fixed plate (35) in front and back correspondence, the bottom end of the electric push rod (10) is connected to one side of the top surface of the roller frame (11), the internal rotation of the roller frame (11) is connected to the pressure roller (12), and the input end of the electric push rod (10) is electrically connected to the output end of the controller (17).

5. The stretching device for a polyimide film with heat-insulating function according to claim 3, characterized in that: The device further comprises a fixing seat (13) and a thickness sensor (14), wherein the fixing seat (13) is fixed to the middle of the top surface of the fixing plate (35), the thickness sensor (14) is clamped inside the fixing seat (13), and the output end of the thickness sensor (14) is electrically connected to the input end of the controller (17).

6. The stretching device for a polyimide film with a heat-insulating function according to claim 1, characterized in that: The invention also includes an alarm light (15) and a display screen (16). The alarm lights (15) are provided in two numbers and are mounted on the top of the front side of the frame (1) in a corresponding manner on the left and right sides. The display screen (16) is fixed on the front side of the frame (1). The input ends of the alarm lights (15) and the display screen (16) are electrically connected to the output end of the controller (17).

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