A horizontal guide rail cooling device for biaxially stretched plastic film production

Abstract

The present invention relates to the field of guide rail cooling technology, and in particular to a transverse guide rail cooling device for biaxially stretched plastic film production, comprising: a guide rail, a slider being arranged on the guide rail; a cooling air duct being opened inside the guide rail, a cooling pipe being arranged on the side wall of the cooling air duct, and equipment boxes being symmetrically arranged on both sides of the guide rail; a detection component, the detection component being used to detect the temperature at different positions of the guide rail; a cooling component, the cooling component comprising a liquid cooling mechanism, a first air cooling mechanism, a switching mechanism and a second air cooling mechanism; a lubrication component, the lubrication component being used to lubricate the guide rail after the detection component detects that the guide rail temperature rises above a set value; the present invention cools the guide rail by combining air cooling, liquid cooling and lubrication, and the combination of the three cooling methods can achieve the best heat dissipation effect while minimizing energy consumption, thereby improving the energy efficiency of the system; the use temperature of the guide rail can be effectively controlled during industrial high-load production, thereby extending the service life.

Description

Technical Field

[0001] The invention relates to the technical field of guide rail cooling, in particular to a transverse guide rail cooling device for producing biaxially stretched plastic films. Background Art

[0002] In the production process of biaxially stretched plastic film, chain clamps are required to clamp both sides of the film and move it along the guide rail in the winding direction when biaxially stretching the film. The above process is carried out in a numerically controlled manner and can work for a long time without stopping. However, the linear guide rail will be subjected to higher temperatures during use due to long-term non-stop operation or high-temperature working environment. If the temperature of the guide rail is too high, it will affect the service life of the guide rail. Summary of the invention

[0003] The object of the present invention is to provide a transverse guide rail cooling device for biaxially stretched plastic film production to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A transverse guide rail cooling device for biaxially stretched plastic film production comprises a guide rail, on which a slider is provided:

[0006] A cooling air duct is provided inside the guide rail, a cooling pipe is provided on the side wall of the cooling air duct, and equipment boxes are symmetrically provided on both sides of the guide rail;

[0007] A detection component, the detection component is used to detect the temperature of different positions of the guide rail;

[0008] A cooling assembly, the cooling assembly comprising a liquid cooling mechanism, an air cooling mechanism 1, a switching mechanism and an air cooling mechanism 2, the liquid cooling mechanism being used to liquid-cool the guide rail by pumping a coolant into the cooling pipe, the air cooling mechanism 1 and the air cooling mechanism 2 being respectively arranged in different equipment boxes, the air cooling mechanism 1 and the liquid cooling mechanism being arranged in the same equipment box, the air cooling mechanism 1 being used to air-cool the guide rail inside the cooling air duct when the liquid cooling mechanism is not started, the switching mechanism being used to switch the air cooling mechanism 1 to the liquid cooling mechanism and the air cooling mechanism 2 after the detection assembly detects that the temperature of the guide rail rises above a set value, the air cooling mechanism 2 being used to air-cool the guide rail and the cooling pipe inside the cooling air duct when the liquid cooling mechanism is started, and when the switching mechanism drives the air cooling mechanism 1 to switch, the air cooling mechanism 1 is used to air-cool the coolant generated after the circulation of the liquid cooling mechanism; and

[0009] A lubrication component is arranged in the equipment box and is used to lubricate the guide rail after the detection component detects that the temperature of the guide rail rises above a set value.

[0010] Preferably, the detection component includes a rotating motor and a temperature sensor, the rotating motor is arranged in the equipment box, and the temperature sensor is arranged at the output end of the rotating motor. The temperature sensor is driven to rotate by the rotating motor to detect the temperature at different positions of the guide rail.

[0011] Preferably, the switching mechanism includes a switching motor 1, a switching disk 1, a switching motor 2 and a switching disk 2, the switching motor 1 and the switching motor 2 are respectively arranged in different equipment boxes, the switching motor 1 is used to drive the switching disk 1 to rotate, the switching motor 2 is used to drive the switching disk 2 to rotate, the air cooling mechanism 1 is arranged on the switching disk 1, and the air cooling mechanism 2 is arranged on the switching disk 2.

[0012] Preferably, the liquid cooling mechanism includes a storage tank, a circulation pump, a connecting pipe 1, a circulation pipe, a connecting pipe 2 and a docking structure, the storage tank and the switching motor 1 are arranged in the same equipment box, the storage tank is provided with cooling liquid, the circulation pump is connected to the liquid outlet end of the storage tank, the two ends of the connecting pipe 1 are respectively connected to the circulation pump and the switching disk 1, the two ends of the circulation pipe are respectively connected to the liquid inlet end of the storage tank and the connecting pipe 2, and the docking structure is used to dock the connecting pipe 1 and the liquid inlet end of the cooling pipe with each other.

[0013] Preferably, the connecting pipe 1 is a pipe with an expansion joint.

[0014] Preferably, the circulation ports of the cooling pipes are all provided with external threads, and the docking structure includes a docking push rod, a docking block, a docking motor, a docking nut, a solenoid valve and a one-way valve, the docking push rod is arranged on the switching disk 1, the docking block is arranged at the telescopic end of the docking push rod, the connecting pipe 1 passes through the docking push rod and is connected with the docking block, the docking motor is arranged on the docking push rod and is used to drive the docking nut to rotate so as to dock the docking block and the cooling pipe with each other, the solenoid valve is arranged on the docking block and is used to control the opening of the docking block, and the one-way valve is arranged on the cooling pipe and is used to allow the coolant to flow into the cooling pipe only in one direction.

[0015] Preferably, the air cooling mechanism includes a heat dissipation fan, which is arranged perpendicular to the radial direction of the switching disk. The heat dissipation fan is used to cool the guide rail inside the cooling air duct when the liquid cooling mechanism is not started. When the liquid cooling mechanism is started, the switching disk is driven to rotate by the switching motor so that the heat dissipation fan can dissipate heat to the circulation pipe.

[0016] Preferably, the second air cooling mechanism includes a second heat dissipation fan, which is arranged perpendicular to the radial direction of the second switching disk, and is used to air cool the guide rail and the cooling pipe inside the cooling air duct when the liquid cooling mechanism is started.

[0017] Preferably, the lubrication assembly includes a trigger switch, an oil storage box, an oil pump, a position sensor, a telescopic rod, an oil pipe and a nozzle. When the switching disk 2 rotates, it will resist the trigger switch to start the lubrication assembly. The oil storage box and the switching motor 2 are arranged in the same equipment box. The oil pump is arranged in the oil storage box and is used to input lubricating oil into the oil pipe. The oil pipe is arranged inside the telescopic rod. The nozzle is connected to the oil pipe. The position sensor is arranged on the telescopic rod and is used to detect the position of the slider.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: when in use, the guide rail is cooled by a pair of air cooling mechanisms and the temperature of the guide rail is detected in real time by a detection component. When the detection component detects that the temperature of the guide rail is too high, the switching mechanism will drive the second air cooling mechanism and the liquid cooling mechanism to further cool the guide rail. At this time, the cooling mode is switched to simultaneous air cooling and liquid cooling, and the first air cooling mechanism will continue to work to cool down the coolant circulated by the cooling mechanism, thereby further improving the cooling effect; the switching mechanism drives the lubrication component to be turned on synchronously when air cooling and liquid cooling are performed simultaneously to lubricate the guide rail and the slider, thereby reducing the friction and wear between the guide rail and the slider, and at the same time, a part of the heat can be taken away during lubrication to play a cooling role. The present invention cools the guide rail by combining air cooling, liquid cooling and lubrication. The combination of the three cooling methods can achieve the best heat dissipation effect while minimizing energy consumption, thereby improving the energy efficiency of the system; the use temperature of the guide rail can be effectively controlled during industrial high-load production processes, thereby extending the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The axial structure of the present invention is schematically shown Figure 1 ;

[0020] Figure 2 The axial structure of the present invention is schematically shown Figure 2 ;

[0021] Figure 3 The cross-sectional structure of the present invention is schematically shown Figure 1 (Liquid cooling mechanism is not turned on);

[0022] Figure 4 The cross-sectional structure of the present invention is schematically shown Figure 2 (Liquid cooling mechanism is turned on);

[0023] Figure 5 It is a cross-sectional structural schematic diagram of the docking state of the docking structure and the cooling pipe of the present invention (liquid cooling mechanism is turned on);

[0024] Figure 6 This is a schematic diagram of the connection structure of the oil pipe and the telescopic rod of the present invention (liquid cooling mechanism is turned on);

[0025] Figure 7 It is a schematic diagram of the switching disk position structure when the liquid cooling mechanism of the present invention is not turned on;

[0026] Figure 8 It is a schematic diagram of the switching disk position structure when the liquid cooling mechanism of the present invention is in the turned-on state;

[0027] Fig. 9 It is a schematic diagram of the connection structure of the butt motor and the butt nut of the present invention.

[0028] In the figure: 1 guide rail, 2 slider, 3 cooling air duct, 4 cooling pipe, 5 equipment box, 6 rotating motor, 7 temperature sensor, 8 switching motor 1, 9 switching disk 1, 10 switching motor 2, 11 switching disk 2, 12 storage tank, 13 circulation pump, 14 connecting pipe 1, 15 circulation pipe, 16 connecting pipe 2, 17 docking push rod, 18 docking block, 19 docking motor, 20 docking nut, 21 solenoid valve, 22 one-way valve, 23 cooling fan 1, 24 cooling fan 2, 25 trigger switch, 26 oil storage box, 27 oil pump, 28 position sensor, 29 telescopic rod, 30 oil pipe, 31 nozzle, 901 guide block. DETAILED DESCRIPTION

[0029] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0030] See also Figure 1-9 , the present invention provides a technical solution:

[0031] A horizontal guide rail cooling device for biaxially stretched plastic film production, as shown in the attached manual Figure 1As shown, it includes a guide rail 1, on which a slider 2 is arranged, and the guide rail 1 is used to limit the movement direction of the slider 2 so that the slider 2 can only move along the guide rail 1. In this embodiment, a chain clamp for clamping a film is arranged on the slider 2 when in use, and a cooling air duct 3 is opened inside the guide rail 1. The cooling air duct 3 is used to cooperate with a heat dissipation fan 1 23 and a heat dissipation fan 2 24 to air-cool the guide rail 1. A cooling pipe 4 is arranged on the side wall of the cooling air duct 3. The cooling pipe 4 is a serpentine pipe with multiple detours. A part of the cooling pipe 4 is embedded in the side wall of the cooling air duct 3. This design is used to increase the heat exchange efficiency of the cooling pipe 4 and the guide rail 1. Equipment boxes 5 are symmetrically arranged on both sides of the guide rail 1, and the equipment box 5 is used to install a detection component, a cooling component and a lubrication component;

[0032] A detection component, which is used to detect the temperature at different positions of the guide rail 1;

[0033] A cooling assembly, the cooling assembly includes a liquid cooling mechanism, an air cooling mechanism 1, a switching mechanism and an air cooling mechanism 2, the liquid cooling mechanism is used to liquid-cool the guide rail 1 by pumping a coolant into the cooling pipe 4, the air cooling mechanism 1 and the air cooling mechanism 2 are respectively arranged in different equipment boxes 5, the air cooling mechanism 1 and the liquid cooling mechanism are arranged in the same equipment box 5, the air cooling mechanism 1 is used to air-cool the guide rail 1 inside the cooling air duct 3 when the liquid cooling mechanism is not started, the switching mechanism is used to switch the air cooling mechanism 1 to the liquid cooling mechanism and the air cooling mechanism 2 after the detection assembly detects that the temperature of the guide rail 1 rises above a set value, the air cooling mechanism 2 is used to air-cool the guide rail 1 and the cooling pipe 4 inside the cooling air duct 3 when the liquid cooling mechanism is started, and when the switching mechanism drives the air cooling mechanism 1 to switch, the air cooling mechanism 1 is used to air-cool the coolant generated after the liquid cooling mechanism circulates; and

[0034] A lubrication component is disposed in the device box 5 and is used to lubricate the guide rail 1 after the detection component detects that the temperature of the guide rail 1 rises above a set value.

[0035] The detection component includes a rotating motor 6 and a temperature sensor 7. The rotating motor 6 is an AKM2G2x servo motor. The temperature sensor 7 is an FT-50 non-contact infrared temperature sensor. The detection range of the temperature sensor 7 can be adjusted according to the actual length of the guide rail 1. The rotating motor 6 is arranged in the equipment box 5. The rotating motor 6 is a servo motor. Therefore, the rotating motor 6 can adjust the angle precisely so that the temperature sensor 7 can detect the temperature of different positions of the guide rail 1. The temperature sensor 7 is arranged at the output end of the rotating motor 6. The temperature sensor 7 is driven by the rotating motor 6 to rotate to detect the temperature of different positions of the guide rail 1.

[0036] The switching mechanism includes a switching motor 8, a switching disk 19, a switching motor 10 and a switching disk 2 11. In the present embodiment, the switching motor 8 and the switching motor 2 10 are both AKM2G7x type servo motors, which can be rotated forward and reversely. The switching motor 8 and the switching motor 2 10 are respectively arranged in different equipment boxes 5. The switching motor 8 is used to drive the switching disk 1 9 to rotate, and the switching motor 2 10 is used to drive the switching disk 2 11 to rotate. The air cooling mechanism 1 is arranged on the switching disk 1 9, and the air cooling mechanism 2 is arranged on the switching disk 2 11.

[0037] The liquid cooling mechanism includes a storage tank 12, a circulation pump 13, a connecting pipe 14, a circulation pipe 15, a connecting pipe 2 16 and a docking structure. The storage tank 12 is used to store coolant. In this embodiment, the coolant is pure water. In actual use, other water-based coolants can also be used instead. The storage tank 12 and the switching motor 1 8 are arranged in the same equipment box 5. The storage tank 12 is provided with coolant. The circulation pump 13 is connected to the liquid outlet end of the storage tank 12. The circulation pump 13 is used to drive the coolant to circulate along the storage tank 12 and the cooling pipe 4. In this embodiment, the circulation pump is a magnetically driven pump, the two ends of the connecting pipe 14 are respectively connected to the circulation pump 13 and the switching disk 19, the two ends of the circulation pipe 15 are respectively connected to the liquid inlet end of the storage tank 12 and the connecting pipe 2 16, the connecting pipe 2 16 is connected to the liquid outlet end of the cooling pipe 4, and the switching disk 19 is provided with a guide block 901 for guiding the connecting pipe 14 to rotate. The guide block 901 is used to guide the rotation direction of the connecting pipe 14 when the switching disk 19 rotates, and the docking structure is used to dock the liquid inlet ends of the connecting pipe 14 and the cooling pipe 4 with each other.

[0038] The connecting pipe 14 is a pipe with an expansion joint, so the connecting pipe will expand and contract when the switching disk 1 9 rotates.

[0039] The circulation ports of the cooling pipe 4 are all provided with external threads, which can cooperate with the internal threads of the docking nut 20. The docking structure includes a docking push rod 17, a docking block 18, a docking motor 19, a docking nut 20, a solenoid valve 21 and a one-way valve 22. One end of the docking push rod 17 is fixedly connected to the switching disk 9, and the docking block 18 is fixedly connected to the telescopic end of the docking push rod 17. The connecting pipe 14 passes through the docking push rod 17 and the docking block 18 to be connected with each other. The docking motor 19 is arranged on the docking push rod 17 and is used to drive the docking nut 20 to rotate so as to dock the docking block 18 and the cooling pipe 4 with each other. The solenoid valve 21 is an EV220A type solenoid valve 21, which controls the medium pressure and flow through electromagnetic force and indirectly controls the switch of the valve. The solenoid valve 21 is arranged on the docking block 18 and is used to control the opening of the docking block 18. The one-way valve 22 is arranged on the cooling pipe 4 and is used to allow the coolant to flow into the cooling pipe 4 only in one direction.

[0040] The air cooling mechanism includes a heat dissipation fan 23, which is a DV 4118 N type duct mixed flow fan. The heat dissipation fan 23 is arranged perpendicular to the radial direction of the switching disk 9. The heat dissipation fan 23 is used to cool the guide rail 1 inside the cooling air duct 3 when the liquid cooling mechanism is not started. When the liquid cooling mechanism is started, the switching disk 9 is driven to rotate by the switching motor 8 to enable the heat dissipation fan 23 to dissipate heat to the circulation pipe 15.

[0041] The second air cooling mechanism includes a heat dissipation fan 24, which is a duct fan. Because the heat dissipation fan 24 needs to dissipate heat for the cooling pipe 4 while cooling the guide rail 1, it is necessary to ensure that the heat dissipation fan 24 has greater power and stronger wind force than the heat dissipation fan 1 23 when using it. The heat dissipation fan 24 is arranged perpendicular to the radial direction of the switching disk 2 11. The heat dissipation fan 24 is used to cool the guide rail 1 and the cooling pipe 4 inside the cooling duct 3 when the liquid cooling mechanism is started.

[0042] The lubrication assembly includes a trigger switch 25, an oil storage box 26, an oil pump 27, a position sensor 28, a telescopic rod 29, an oil pipe 30 and a nozzle 31. The trigger switch 25 is arranged in the equipment box 5. The trigger switch 25 is a self-resetting switch. When the switching disk 2 11 rotates, it will resist the trigger switch 25 to start the lubrication assembly. When the switching disk 2 11 is reset, the trigger switch 25 will reset itself and then control the telescopic rod 29 to retract and the nozzle 31 to stop working through an electrical signal. The oil storage box 26 and the switching motor 2 10 are arranged in the same equipment box 5. The oil pump 27 is arranged in the oil storage box 26 and It is used to input lubricating oil into the oil pipe 30, the oil pipe 30 is arranged inside the telescopic rod 29, the oil pipe 30 is a telescopic tube, the nozzle 31 is connected to one end of the oil pipe 30, the nozzle 31 is an electrically controlled nozzle 31, and the aperture size of the nozzle 31 can be adjusted. The position sensor 28 is arranged on the telescopic rod 29 and is used to detect the position of the slider 2. The position sensor 28 is a TCRT5000 reflective infrared ranging sensor. The position sensor 28 is used to detect the distance between the telescopic end of the telescopic rod 29 and the slider 2 to prevent the telescopic rod 29 from affecting the operation of the slider 2 when driving the nozzle 31 to move.

[0043] Working principle: When in use, the temperature of the guide rail 1 is relatively low at the beginning of operation. At this time, the heat dissipation fan 23 will continue to work to dissipate the heat generated by the guide rail 1 through the cooling air duct 3; the rotating motor 6 will continue to drive the temperature sensor 7 to detect the temperature of different positions of the guide rail 1; when the temperature sensor 7 detects that the temperature of the guide rail 1 is too high, the switching motor 8 will drive the switching disk 9 to rotate ninety degrees, and at this time the docking push rod 17 will drive the docking block 18 and the liquid inlet end of the cooling pipe 4 to dock. After the docking is completed, the docking motor 19 will drive the docking nut 20 to rotate and then seal the docking block 18 and the cooling pipe 4. After the connection is completed, the solenoid valve 21 and the circulating pump 13 will be turned on to drive the coolant to circulate When the switching disk 2 11 rotates, it will press against the trigger switch 25 to start the telescopic rod 29 to move, and the telescopic rod 29 will move and the oil pump 27 will spray the lubricating oil in the oil storage box 26 through the nozzle 31 to lubricate the guide rail 1 and the slider 2, and when the switching disk 2 11 is reset, the trigger switch 25 will reset itself and control the telescopic rod 29 to shrink and the nozzle 31 to stop working through an electrical signal.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A horizontal guide rail cooling device for biaxially stretched plastic film production, comprising a guide rail, a slider is provided on the guide rail, and is characterized in that: A cooling air duct is provided inside the guide rail, a cooling pipe is provided on the side wall of the cooling air duct, and equipment boxes are symmetrically provided on both sides of the guide rail; A detection component, the detection component is used to detect the temperature of different positions of the guide rail; A cooling component, the cooling component includes a liquid cooling mechanism, an air cooling mechanism 1, a switching mechanism and an air cooling mechanism 2, the liquid cooling mechanism is used to liquid-cool the guide rail by pumping a coolant into the cooling pipe, the air cooling mechanism 1 and the air cooling mechanism 2 are respectively arranged in different equipment boxes, the air cooling mechanism 1 and the liquid cooling mechanism are arranged in the same equipment box, the air cooling mechanism 1 is used to air-cool the guide rail inside the cooling air duct when the liquid cooling mechanism is not started, the switching mechanism is used to switch the air cooling mechanism 1 to the liquid cooling mechanism and the air cooling mechanism 2 after the detection component detects that the temperature of the guide rail rises above a set value, the air cooling mechanism 2 is used to air-cool the guide rail and the cooling pipe inside the cooling air duct when the liquid cooling mechanism is started, and when the switching mechanism drives the air cooling mechanism 1 to switch, the air cooling mechanism 1 is used to air-cool the coolant generated after the liquid cooling mechanism circulates; as well as A lubrication component, which is arranged in the equipment box and is used to lubricate the guide rail after the detection component detects that the temperature of the guide rail rises above a set value; The switching mechanism includes a switching motor 1, a switching disk 1, a switching motor 2 and a switching disk 2, wherein the switching motor 1 and the switching motor 2 are respectively arranged in different equipment boxes, the switching motor 1 is used to drive the switching disk 1 to rotate, and the switching motor 2 is used to drive the switching disk 2 to rotate, the air cooling mechanism 1 is arranged on the switching disk 1, and the air cooling mechanism 2 is arranged on the switching disk 2; The liquid cooling mechanism includes a storage tank, a circulation pump, a connecting pipe 1, a circulation pipe, a connecting pipe 2 and a docking structure. The storage tank and the switching motor 1 are arranged in the same equipment box. Cooling liquid is arranged in the storage tank. The circulation pump is connected to the liquid outlet end of the storage tank. Both ends of the connecting pipe 1 are respectively connected to the circulation pump and the switching disk 1. Both ends of the circulation pipe are respectively connected to the liquid inlet end of the storage tank and the connecting pipe 2. The docking structure is used to dock the connecting pipe 1 and the liquid inlet end of the cooling pipe with each other. The circulation ports of the cooling pipes are all provided with external threads, and the docking structure includes a docking push rod, a docking block, a docking motor, a docking nut, a solenoid valve and a one-way valve. The docking push rod is arranged on the switching disk 1, and the docking block is arranged on the telescopic end of the docking push rod. The connecting pipe 1 passes through the docking push rod and is connected with the docking block. The docking motor is arranged on the docking push rod and is used to drive the docking nut to rotate so as to dock the docking block and the cooling pipe with each other. The solenoid valve is arranged on the docking block and is used to control the opening of the docking block. The one-way valve is arranged on the cooling pipe and is used to allow the coolant to flow into the cooling pipe only in one direction.

2. A transverse guide rail cooling device for biaxially oriented plastic film production according to claim 1, characterized in that: The detection component includes a rotating motor and a temperature sensor. The rotating motor is arranged in the equipment box, and the temperature sensor is arranged at the output end of the rotating motor. The temperature sensor is driven to rotate by the rotating motor to detect the temperature at different positions of the guide rail.

3. A transverse guide rail cooling device for biaxially oriented plastic film production according to claim 1, characterized in that: The connecting pipe 1 is a pipe with an expansion joint.

4. The horizontal guide rail cooling device for biaxially oriented plastic film production according to claim 1, characterized in that: The air cooling mechanism includes a heat dissipation fan, which is arranged perpendicular to the radial direction of the switching disk. The heat dissipation fan is used to cool the guide rail inside the cooling air duct when the liquid cooling mechanism is not started. When the liquid cooling mechanism is started, the switching disk is driven to rotate by the switching motor so that the heat dissipation fan dissipates heat to the circulation pipe.

5. The horizontal guide rail cooling device for biaxially oriented plastic film production according to claim 1, characterized in that: The second air cooling mechanism includes a second heat dissipation fan, which is arranged perpendicular to the radial direction of the second switching disk. The second heat dissipation fan is used to air cool the guide rail and the cooling pipe inside the cooling air duct when the liquid cooling mechanism is started.

6. The horizontal guide rail cooling device for biaxially oriented plastic film production according to claim 1, characterized in that: The lubrication assembly includes a trigger switch, an oil storage box, an oil pump, a position sensor, a telescopic rod, an oil pipe and a nozzle. When the switching disk 2 rotates, it will resist the trigger switch to start the lubrication assembly. The oil storage box and the switching motor 2 are arranged in the same equipment box. The oil pump is arranged in the oil storage box and is used to input lubricating oil into the oil pipe. The oil pipe is arranged inside the telescopic rod. The nozzle is connected to the oil pipe. The position sensor is arranged on the telescopic rod and is used to detect the position of the slider.

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